diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java')
-rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java | 3808 |
1 files changed, 1904 insertions, 1904 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java index c55e81d651..c08db437da 100755 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java +++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java @@ -1,1907 +1,1907 @@ -package org.eclipse.swt.widgets;
-
-/*
+package org.eclipse.swt.widgets; + +/* * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. * This file is made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html
- */
-
-import org.eclipse.swt.internal.win32.*;
-import org.eclipse.swt.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.events.*;
-
-/**
- * Instances of this class provide a selectable user interface object
- * that displays a hierarchy of items and issue notificiation when an
- * item in the hierarchy is selected.
- * <p>
- * The item children that may be added to instances of this class
- * must be of type <code>TreeItem</code>.
- * </p><p>
- * Note that although this class is a subclass of <code>Composite</code>,
- * it does not make sense to add <code>Control</code> children to it,
- * or set a layout on it.
- * </p><p>
- * <dl>
- * <dt><b>Styles:</b></dt>
- * <dd>SINGLE, MULTI, CHECK</dd>
- * <dt><b>Events:</b></dt>
- * <dd>Selection, DefaultSelection, Collapse, Expand</dd>
- * </dl>
- * <p>
- * Note: Only one of the styles SINGLE and MULTI may be specified.
- * </p><p>
- * IMPORTANT: This class is <em>not</em> intended to be subclassed.
- * </p>
- */
-public class Tree extends Composite {
- int hAnchor;
- TreeItem [] items;
- ImageList imageList;
- boolean dragStarted;
- boolean ignoreSelect, ignoreExpand, ignoreDeselect;
- boolean customDraw;
- static final int TreeProc;
- static final TCHAR TreeClass = new TCHAR (0, OS.WC_TREEVIEW, true);
- static {
- WNDCLASS lpWndClass = new WNDCLASS ();
- OS.GetClassInfo (0, TreeClass, lpWndClass);
- TreeProc = lpWndClass.lpfnWndProc;
- }
-
-/**
- * Constructs a new instance of this class given its parent
- * and a style value describing its behavior and appearance.
- * <p>
- * The style value is either one of the style constants defined in
- * class <code>SWT</code> which is applicable to instances of this
- * class, or must be built by <em>bitwise OR</em>'ing together
- * (that is, using the <code>int</code> "|" operator) two or more
- * of those <code>SWT</code> style constants. The class description
- * lists the style constants that are applicable to the class.
- * Style bits are also inherited from superclasses.
- * </p>
- *
- * @param parent a composite control which will be the parent of the new instance (cannot be null)
- * @param style the style of control to construct
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
- * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
- * </ul>
- *
- * @see SWT#SINGLE
- * @see SWT#MULTI
- * @see SWT#CHECK
- * @see Widget#checkSubclass
- * @see Widget#getStyle
- */
-public Tree (Composite parent, int style) {
- super (parent, checkStyle (style));
-}
-
-/**
- * Adds the listener to the collection of listeners who will
- * be notified when the receiver's selection changes, by sending
- * it one of the messages defined in the <code>SelectionListener</code>
- * interface.
- * <p>
- * When <code>widgetSelected</code> is called, the item field of the event object is valid.
- * If the reciever has <code>SWT.CHECK</code> style set and the check selection changes,
- * the event object detail field contains the value <code>SWT.CHECK</code>.
- * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked.
- * The item field of the event object is valid for default selection, but the detail field is not used.
- * </p>
- *
- * @param listener the listener which should be notified
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #removeSelectionListener
- * @see SelectionEvent
- */
-public void addSelectionListener(SelectionListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- TypedListener typedListener = new TypedListener (listener);
- addListener (SWT.Selection, typedListener);
- addListener (SWT.DefaultSelection, typedListener);
-}
-
-/**
- * Adds the listener to the collection of listeners who will
- * be notified when an item in the receiver is expanded or collapsed
- * by sending it one of the messages defined in the <code>TreeListener</code>
- * interface.
- *
- * @param listener the listener which should be notified
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see TreeListener
- * @see #removeTreeListener
- */
-public void addTreeListener(TreeListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- TypedListener typedListener = new TypedListener (listener);
- addListener (SWT.Expand, typedListener);
- addListener (SWT.Collapse, typedListener);
-}
-
-int callWindowProc (int msg, int wParam, int lParam) {
- if (handle == 0) return 0;
- return OS.CallWindowProc (TreeProc, handle, msg, wParam, lParam);
-}
-
-static int checkStyle (int style) {
- /*
- * Feature in Windows. It is not possible to create
- * a tree that scrolls and does not have scroll bars.
- * The TVS_NOSCROLL style will remove the scroll bars
- * but the tree will never scroll. Therefore, no matter
- * what style bits are specified, set the H_SCROLL and
- * V_SCROLL bits so that the SWT style will match the
- * widget that Windows creates.
- */
- style |= SWT.H_SCROLL | SWT.V_SCROLL;
- return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
-}
-
-
-public Point computeSize (int wHint, int hHint, boolean changed) {
- checkWidget ();
- int width = 0, height = 0;
- RECT rect = new RECT ();
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- while (hItem != 0) {
- rect.left = hItem;
- if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) {
- width = Math.max (width, rect.right - rect.left);
- height += rect.bottom - rect.top;
- }
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
- }
- width = width * 2;
- if (width == 0) width = DEFAULT_WIDTH;
- if (height == 0) height = DEFAULT_HEIGHT;
- if (wHint != SWT.DEFAULT) width = wHint;
- if (hHint != SWT.DEFAULT) height = hHint;
- int border = getBorderWidth ();
- width += border * 2; height += border * 2;
- if ((style & SWT.V_SCROLL) != 0) {
- width += OS.GetSystemMetrics (OS.SM_CXVSCROLL);
- }
- if ((style & SWT.H_SCROLL) != 0) {
- height += OS.GetSystemMetrics (OS.SM_CYHSCROLL);
- }
- return new Point (width, height);
-}
-
-void createHandle () {
- super.createHandle ();
- state &= ~CANVAS;
-
- /* Set the checkbox image list */
- if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
-
- /*
- * Feature in Windows. When the control is created,
- * it does not use the default system font. A new HFONT
- * is created and destroyed when the control is destroyed.
- * This means that a program that queries the font from
- * this control, uses the font in another control and then
- * destroys this control will have the font unexpectedly
- * destroyed in the other control. The fix is to assign
- * the font ourselves each time the control is created.
- * The control will not destroy a font that it did not
- * create.
- */
- int hFont = OS.GetStockObject (OS.SYSTEM_FONT);
- OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
-}
-
-void createItem (TreeItem item, int hParent, int hInsertAfter) {
- item.foreground = item.background = -1;
- int id = 0;
- while (id < items.length && items [id] != null) id++;
- if (id == items.length) {
- TreeItem [] newItems = new TreeItem [items.length + 4];
- System.arraycopy (items, 0, newItems, 0, items.length);
- items = newItems;
- }
- TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
- tvInsert.hParent = hParent;
- tvInsert.hInsertAfter = hInsertAfter;
- tvInsert.lParam = id;
- tvInsert.iImage = OS.I_IMAGENONE;
- tvInsert.iSelectedImage = tvInsert.iImage;
- tvInsert.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM | OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE;
-
- /* Set the initial unchecked state */
- if ((style & SWT.CHECK) != 0) {
- tvInsert.mask = tvInsert.mask | OS.TVIF_STATE;
- tvInsert.state = 1 << 12;
- tvInsert.stateMask = OS.TVIS_STATEIMAGEMASK;
- }
-
- /* Insert the item */
- int hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
- if (hItem == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
- item.handle = hItem;
- items [id] = item;
-
- /*
- * This code is intentionally commented.
- */
-// if (hParent != 0) {
-// int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
-// bits |= OS.TVS_LINESATROOT;
-// OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
-// }
-
- /*
- * Bug in Windows. When a child item is added to a parent item
- * that has no children outside of WM_NOTIFY with control code
- * TVN_ITEMEXPANDED, the tree widget does not redraw the +/-
- * indicator. The fix is to detect this case and force a redraw.
- */
- if (!OS.IsWindowVisible (handle) || drawCount > 0) return;
- int hChild = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent);
- if (hChild == 0 || OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hChild) != 0) {
- return;
- }
- RECT rect = new RECT ();
- rect.left = hParent;
- if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
- OS.InvalidateRect (handle, rect, false);
- }
-}
-
-void createWidget () {
- super.createWidget ();
- items = new TreeItem [4];
-}
-
-int defaultBackground () {
- return OS.GetSysColor (OS.COLOR_WINDOW);
-}
-
-/**
- * Deselects all selected items in the receiver.
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void deselectAll () {
- checkWidget ();
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- if ((style & SWT.SINGLE) != 0) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) {
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- return;
- }
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-void destroyItem (TreeItem item) {
- int hItem = item.handle;
- boolean fixRedraw = false;
- if (drawCount == 0 && OS.IsWindowVisible (handle)) {
- RECT rect = new RECT ();
- rect.left = hItem;
- fixRedraw = OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) == 0;
- }
- if (fixRedraw) {
- OS.UpdateWindow (handle);
- OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
- }
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
- releaseItems (item.getItems (), tvItem);
- releaseItem (item, tvItem);
- OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
- if (fixRedraw) {
- OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
- OS.ValidateRect (handle, null);
- }
- int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
- if (count == 0) {
- if (imageList != null) {
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
- Display display = getDisplay ();
- display.releaseImageList (imageList);
- }
- imageList = null;
- customDraw = false;
- items = new TreeItem [4];
- }
-}
-
-int getBackgroundPixel () {
- if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW);
- int pixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
- if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOW);
- return pixel;
-}
-
-int getForegroundPixel () {
- if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
- int pixel = OS.SendMessage (handle, OS.TVM_GETTEXTCOLOR, 0, 0);
- if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
- return pixel;
-}
-
-/**
- * Returns the item at the given point in the receiver
- * or null if no such item exists. The point is in the
- * coordinate system of the receiver.
- *
- * @param point the point used to locate the item
- * @return the item at the given point
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the point is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem getItem (Point point) {
- checkWidget ();
- if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
- TVHITTESTINFO lpht = new TVHITTESTINFO ();
- lpht.x = point.x; lpht.y = point.y;
- OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
- if (lpht.hItem != 0 && (lpht.flags & OS.TVHT_ONITEM) != 0) {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
- tvItem.hItem = lpht.hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- return items [tvItem.lParam];
- }
- return null;
-}
-
-/**
- * Returns the number of items contained in the receiver
- * that are direct item children of the receiver. The
- * number that is returned is the number of roots in the
- * tree.
- *
- * @return the number of items
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getItemCount () {
- checkWidget ();
- int count = 0;
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- while (hItem != 0) {
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
- count++;
- }
- return count;
-}
-
-/**
- * Returns the height of the area which would be used to
- * display <em>one</em> of the items in the tree.
- *
- * @return the height of one item
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getItemHeight () {
- checkWidget ();
- return OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0);
-}
-
-/**
- * Returns the number of items contained in the receiver
- * that are direct item children of the receiver. These
- * are the roots of the tree.
- * <p>
- * Note: This is not the actual structure used by the receiver
- * to maintain its list of items, so modifying the array will
- * not affect the receiver.
- * </p>
- *
- * @return the number of items
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem [] getItems () {
- checkWidget ();
- int count = 0;
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- while (hItem != 0) {
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
- count++;
- }
- int index = 0;
- TreeItem [] result = new TreeItem [count];
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
- tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- while (tvItem.hItem != 0) {
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- result [index++] = items [tvItem.lParam];
- tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, tvItem.hItem);
- }
- return result;
-}
-
-/**
- * Returns the receiver's parent item, which must be a
- * <code>TreeItem</code> or null when the receiver is a
- * root.
- *
- * @return the receiver's parent item
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem getParentItem () {
- checkWidget ();
- return null;
-}
-
-/**
- * Returns an array of <code>TreeItem</code>s that are currently
- * selected in the receiver. An empty array indicates that no
- * items are selected.
- * <p>
- * Note: This is not the actual structure used by the receiver
- * to maintain its selection, so modifying the array will
- * not affect the receiver.
- * </p>
- * @return an array representing the selection
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem [] getSelection () {
- checkWidget ();
- if ((style & SWT.SINGLE) != 0) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem == 0) return new TreeItem [0];
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) == 0) return new TreeItem [0];
- return new TreeItem [] {items [tvItem.lParam]};
- }
- int count = 0;
- TreeItem [] guess = new TreeItem [8];
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- if (count < guess.length) guess [count] = item;
- count++;
- }
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
- if (count == 0) return new TreeItem [0];
- if (count == guess.length) return guess;
- TreeItem [] result = new TreeItem [count];
- if (count < guess.length) {
- System.arraycopy (guess, 0, result, 0, count);
- return result;
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- int index = 0;
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- result [index++] = item;
- }
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
- return result;
-}
-
-/**
- * Returns the number of selected items contained in the receiver.
- *
- * @return the number of selected items
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getSelectionCount () {
- checkWidget ();
- if ((style & SWT.SINGLE) != 0) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem == 0) return 0;
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) == 0) return 0;
- return 1;
- }
- int count = 0;
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) count++;
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
- return count;
-}
-
-/**
- * Returns the item which is currently at the top of the receiver.
- * This item can change when items are expanded, collapsed, scrolled
- * or new items are added or removed.
- *
- * @return the item at the top of the receiver
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @since 2.1
- */
-public TreeItem getTopItem () {
- checkWidget ();
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
- if (hItem == 0) return null;
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_PARAM;
- tvItem.hItem = hItem;
- if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) == 0) return null;
- return items [tvItem.lParam];
-}
-
-int imageIndex (Image image) {
- if (image == null) return OS.I_IMAGENONE;
- if (imageList == null) {
- int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
- if (hOldList != 0) OS.ImageList_Destroy (hOldList);
- Rectangle bounds = image.getBounds ();
- imageList = getDisplay ().getImageList (new Point (bounds.width, bounds.height));
- int index = imageList.indexOf (image);
- if (index == -1) index = imageList.add (image);
- int hImageList = imageList.getHandle ();
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, hImageList);
- return index;
- }
- int index = imageList.indexOf (image);
- if (index != -1) return index;
- return imageList.add (image);
-}
-
-boolean releaseItem (TreeItem item, TVITEM tvItem) {
- int hItem = item.handle;
- if (hItem == hAnchor) hAnchor = 0;
- if (item.isDisposed ()) return false;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- items [tvItem.lParam] = null;
- return true;
-}
-
-void releaseItems (TreeItem [] nodes, TVITEM tvItem) {
- for (int i=0; i<nodes.length; i++) {
- TreeItem item = nodes [i];
- TreeItem [] sons = item.getItems ();
- if (sons.length != 0) {
- releaseItems (sons, tvItem);
- }
- if (releaseItem (item, tvItem)) {
- item.releaseResources ();
- }
- }
-}
-
-void releaseWidget () {
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null && !item.isDisposed ()) {
- item.releaseResources ();
- }
- }
- /*
- * Feature in Windows. For some reason, when
- * TVM_GETIMAGELIST or TVM_SETIMAGELIST is sent,
- * the tree issues NM_CUSTOMDRAW messages. This
- * behavior is unwanted when the tree is being
- * disposed. The fix is to ingore NM_CUSTOMDRAW
- * messages by usnig the custom draw flag.
- *
- * NOTE: This only happens on Windows XP.
- */
- customDraw = false;
- items = null;
- if (imageList != null) {
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
- Display display = getDisplay ();
- display.releaseImageList (imageList);
- } else {
- int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
- if (hOldList != 0) OS.ImageList_Destroy (hOldList);
- }
- imageList = null;
- int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, 0);
- if (hOldList != 0) OS.ImageList_Destroy (hOldList);
- super.releaseWidget ();
-}
-
-
-/**
- * Removes all of the items from the receiver.
- * <p>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void removeAll () {
- checkWidget ();
- ignoreDeselect = ignoreSelect = true;
- if (drawCount == 0) {
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
- }
- int result = OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, OS.TVI_ROOT);
- if (drawCount == 0) {
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
- OS.InvalidateRect (handle, null, true);
- }
- ignoreDeselect = ignoreSelect = false;
- if (result == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null && !item.isDisposed ()) {
- item.releaseResources ();
- }
- }
- if (imageList != null) {
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
- Display display = getDisplay ();
- display.releaseImageList (imageList);
- }
- imageList = null;
- customDraw = false;
- items = new TreeItem [4];
- hAnchor = 0;
-}
-
-/**
- * Removes the listener from the collection of listeners who will
- * be notified when the receiver's selection changes.
- *
- * @param listener the listener which should no longer be notified
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #addSelectionListener
- */
-public void removeSelectionListener (SelectionListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- eventTable.unhook (SWT.Selection, listener);
- eventTable.unhook (SWT.DefaultSelection, listener);
-}
-
-/**
- * Removes the listener from the collection of listeners who will
- * be notified when items in the receiver are expanded or collapsed..
- *
- * @param listener the listener which should no longer be notified
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see TreeListener
- * @see #addTreeListener
- */
-public void removeTreeListener(TreeListener listener) {
- checkWidget ();
- if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
- if (eventTable == null) return;
- eventTable.unhook (SWT.Expand, listener);
- eventTable.unhook (SWT.Collapse, listener);
-}
-
-/**
- * Display a mark indicating the point at which an item will be inserted.
- * The drop insert item has a visual hint to show where a dragged item
- * will be inserted when dropped on the tree.
- *
- * @param item the insert item. Null will clear the insertion mark.
- * @param after true places the insert mark above 'item'. false places
- * the insert mark below 'item'.
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setInsertMark (TreeItem item, boolean before) {
- checkWidget ();
- int hItem = 0;
- if (item != null) {
- if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
- hItem = item.handle;
- }
- OS.SendMessage (handle, OS.TVM_SETINSERTMARK, (before) ? 0 : 1, hItem);
-}
-
-/**
- * Selects all the items in the receiver.
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void selectAll () {
- checkWidget ();
- if ((style & SWT.SINGLE) != 0) return;
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem == 0) {
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- if (hItem != 0) {
- ignoreSelect = true;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hItem);
- ignoreSelect = false;
- }
- }
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.state = OS.TVIS_SELECTED;
- tvItem.stateMask = OS.TVIS_SELECTED;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-void setBackgroundPixel (int pixel) {
- if (background == pixel) return;
- background = pixel;
- /*
- * Bug in Windows. When TVM_GETBKCOLOR is used more
- * than once to set the background color of a tree,
- * the background color of the lines and the plus/minus
- * does not change to the new color. The fix is to set
- * the background color to the default before setting
- * the new color.
- */
- int oldPixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
- if (oldPixel != -1) OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, -1);
- OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, pixel);
- if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
-}
-
-void setBounds (int x, int y, int width, int height, int flags) {
- /*
- * Ensure that the selection is visible when the tree is resized
- * from a zero size to a size that can show the selection.
- */
- boolean fixSelection = false;
- if ((flags & OS.SWP_NOSIZE) == 0 && (width != 0 || height != 0)) {
- if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
- fixSelection = true;
- }
- }
- super.setBounds (x, y, width, height, flags);
- if (fixSelection) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) showItem (hItem);
- }
-}
-
-void setCheckboxImageList () {
- if ((style & SWT.CHECK) == 0) return;
- int count = 5;
- int height = OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0), width = height;
- int hImageList = OS.ImageList_Create (width, height, OS.ILC_COLOR, count, count);
- int hDC = OS.GetDC (handle);
- int memDC = OS.CreateCompatibleDC (hDC);
- int hBitmap = OS.CreateCompatibleBitmap (hDC, width * count, height);
- int hOldBitmap = OS.SelectObject (memDC, hBitmap);
- RECT rect = new RECT ();
- OS.SetRect (rect, 0, 0, width * count, height);
- int hBrush = OS.CreateSolidBrush (getBackgroundPixel ());
- OS.FillRect (memDC, rect, hBrush);
- OS.DeleteObject (hBrush);
- int oldFont = OS.SelectObject (hDC, defaultFont ());
- TEXTMETRIC tm = new TEXTMETRIC ();
- OS.GetTextMetrics (hDC, tm);
- OS.SelectObject (hDC, oldFont);
- int itemWidth = Math.min (tm.tmHeight, width);
- int itemHeight = Math.min (tm.tmHeight, height);
- int left = (width - itemWidth) / 2, top = (height - itemHeight) / 2 + 1;
- OS.SetRect (rect, left + width, top, left + width + itemWidth, top + itemHeight);
- OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_FLAT);
- rect.left += width; rect.right += width;
- OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_FLAT);
- rect.left += width; rect.right += width;
- OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
- rect.left += width; rect.right += width;
- OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
- OS.SelectObject (memDC, hOldBitmap);
- OS.DeleteDC (memDC);
- OS.ReleaseDC (handle, hDC);
- OS.ImageList_AddMasked (hImageList, hBitmap, 0);
- OS.DeleteObject (hBitmap);
- int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
- OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, hImageList);
- if (hOldList != 0) OS.ImageList_Destroy (hOldList);
-}
-
-void setForegroundPixel (int pixel) {
- if (foreground == pixel) return;
- foreground = pixel;
- OS.SendMessage (handle, OS.TVM_SETTEXTCOLOR, 0, pixel);
-}
-
-public void setRedraw (boolean redraw) {
- checkWidget ();
- /*
- * Bug in Windows. For some reason, when WM_SETREDRAW
- * is used to turn redraw on for a tree and the tree
- * contains no items, the last item in the tree does
- * not redraw properly. If the tree has only one item,
- * that item is not drawn. If another window is dragged
- * on top of the item, parts of the item are redrawn
- * and erased at random. The fix is to ensure that this
- * case doesn't happen by inserting and deleting an item
- * when redraw is turned on and there are no items in
- * the tree.
- */
- int hItem = 0;
- if (redraw) {
- int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
- if (count == 0) {
- TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
- tvInsert.hInsertAfter = OS.TVI_FIRST;
- hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
- }
- }
- super.setRedraw (redraw);
- if (hItem != 0) {
- OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
- }
-}
-
-/**
- * Sets the receiver's selection to be the given array of items.
- * The current selected is first cleared, then the new items are
- * selected.
- *
- * @param items the array of items
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the array of items is null</li>
- * <li>ERROR_INVALID_ARGUMENT - if one of the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#deselectAll()
- */
-public void setSelection (TreeItem [] items) {
- checkWidget ();
- if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
-
- /* Select/deselect the first item */
- int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (items.length == 0) {
- if (hOldItem != 0) {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- tvItem.hItem = hOldItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- } else {
- int hNewItem = 0;
- TreeItem item = items [0];
- if (item != null) {
- if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
- hAnchor = hNewItem = item.handle;
- }
- ignoreSelect = true;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
- ignoreSelect = false;
- /*
- * Feature in Windows. When the old and new focused item
- * are the same, Windows does not check to make sure that
- * the item is actually selected, not just focused. The
- * fix is to force the item to draw selected by setting
- * the state mask.
- */
- if (hOldItem == hNewItem) {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.state = OS.TVIS_SELECTED;
- tvItem.stateMask = OS.TVIS_SELECTED;
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- showItem (hNewItem);
- }
- if ((style & SWT.SINGLE) != 0) return;
-
- /* Select/deselect the rest of the items */
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<this.items.length; i++) {
- TreeItem item = this.items [i];
- if (item != null) {
- int index = 0;
- while (index < items.length) {
- if (items [index] == item) break;
- index++;
- }
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- if (index == items.length) {
- tvItem.state = 0;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- } else {
- if (index != items.length) {
- tvItem.state = OS.TVIS_SELECTED;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
- }
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-/**
- * Sets the item which is currently at the top of the receiver.
- * This item can change when items are expanded, collapsed, scrolled
- * or new items are added or removed.
- *
- * @param item the item to be shown
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the item is null</li>
- * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#getTopItem()
- *
- * @since 2.1
- */
-public void setTopItem (TreeItem item) {
- checkWidget ();
- if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
- if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, item.handle);
-}
-
-void showItem (int hItem) {
- /*
- * Bug in Windows. When TVM_ENSUREVISIBLE is used to ensure
- * that an item is visible and the client area of the tree is
- * smaller that the size of one item, TVM_ENSUREVISIBLE makes
- * the next item in the tree visible by making it the top item
- * instead of making the desired item visible. The fix is to
- * detect the case when the client area is too small and make
- * the desired visible item be the top item in the tree.
- */
- if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem);
- OS.SendMessage (handle, OS.WM_HSCROLL, OS.SB_TOP ,0);
- } else {
- boolean scroll = true;
- RECT itemRect = new RECT ();
- itemRect.left = hItem;
- if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) {
- RECT rect = new RECT ();
- OS.GetClientRect (handle, rect);
- POINT pt = new POINT ();
- pt.x = itemRect.left;
- pt.y = itemRect.top;
- if (OS.PtInRect (rect, pt)) {
- pt.y = itemRect.bottom;
- if (OS.PtInRect (rect, pt)) scroll = false;
- }
- }
- if (scroll) OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
- }
-}
-
-/**
- * Shows the item. If the item is already showing in the receiver,
- * this method simply returns. Otherwise, the items are scrolled
- * and expanded until the item is visible.
- *
- * @param item the item to be shown
- *
- * @exception IllegalArgumentException <ul>
- * <li>ERROR_NULL_ARGUMENT - if the item is null</li>
- * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#showSelection()
- */
-public void showItem (TreeItem item) {
- checkWidget ();
- if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
- if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
- showItem (item.handle);
-}
-
-/**
- * Shows the selection. If the selection is already showing in the receiver,
- * this method simply returns. Otherwise, the items are scrolled until
- * the selection is visible.
- *
- * @exception SWTException <ul>
- * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#showItem(TreeItem)
- */
-public void showSelection () {
- checkWidget ();
- int hItem = 0;
- if ((style & SWT.SINGLE) != 0) {
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem == 0) return;
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) == 0) return;
- } else {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- int index = 0;
- while (index <items.length) {
- TreeItem item = items [index];
- if (item != null) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- hItem = tvItem.hItem;
- break;
- }
- }
- index++;
- }
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
- }
- if (hItem != 0) showItem (hItem);
-}
-
-String toolTipText (NMTTDISPINFO hdr) {
- int hwndToolTip = OS.SendMessage (handle, OS.TVM_GETTOOLTIPS, 0, 0);
- if (hwndToolTip == hdr.hwndFrom && toolTipText != null) return "";
- return super.toolTipText (hdr);
-}
-
-int widgetStyle () {
- int bits = super.widgetStyle () | OS.TVS_SHOWSELALWAYS;
- bits |= OS.TVS_LINESATROOT | OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
- /*
- * This code is intentionally commented. In future,
- * FULL_SELECTION may be implemented for trees.
- */
-// if ((style & SWT.FULL_SELECTION) != 0) {
-// bits |= OS.TVS_FULLROWSELECT;
-// } else {
-// bits |= OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
-// }
-// bits |= OS.TVS_NOTOOLTIPS;
- return bits;
-}
-
-TCHAR windowClass () {
- return TreeClass;
-}
-
-int windowProc () {
- return TreeProc;
-}
-
-LRESULT WM_CHAR (int wParam, int lParam) {
- LRESULT result = super.WM_CHAR (wParam, lParam);
- if (result != null) return result;
- /*
- * Feature in Windows. The tree control beeps
- * in WM_CHAR when the search for the item that
- * matches the key stroke fails. This is the
- * standard tree behavior but is unexpected when
- * the key that was typed was ESC, CR or SPACE.
- * The fix is to avoid calling the tree window
- * proc in these cases.
- */
- switch (wParam) {
- case OS.VK_ESCAPE:
- case OS.VK_RETURN:
- case OS.VK_SPACE: return LRESULT.ZERO;
- }
- return result;
-}
-
-LRESULT WM_GETOBJECT (int wParam, int lParam) {
- /*
- * Ensure that there is an accessible object created for this
- * control because support for checked item accessibility is
- * temporarily implemented in the accessibility package.
- */
- if ((style & SWT.CHECK) != 0) {
- if (accessible == null) accessible = new_Accessible (this);
- }
- return super.WM_GETOBJECT (wParam, lParam);
-}
-
-LRESULT WM_KEYDOWN (int wParam, int lParam) {
- LRESULT result = super.WM_KEYDOWN (wParam, lParam);
- if (result != null) return result;
- switch (wParam) {
- case OS.VK_SPACE: {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) {
- hAnchor = hItem;
- OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM;
- tvItem.hItem = hItem;
- if ((style & SWT.CHECK) != 0) {
- tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- int state = tvItem.state >> 12;
- if ((state & 0x1) != 0) {
- state++;
- } else {
- --state;
- }
- tvItem.state = state << 12;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- tvItem.stateMask = OS.TVIS_SELECTED;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((style & SWT.MULTI) != 0 && OS.GetKeyState (OS.VK_CONTROL) < 0) {
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- tvItem.state &= ~OS.TVIS_SELECTED;
- } else {
- tvItem.state |= OS.TVIS_SELECTED;
- }
- } else {
- tvItem.state |= OS.TVIS_SELECTED;
- }
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- Event event = new Event ();
- event.item = items [tvItem.lParam];
- postEvent (SWT.Selection, event);
- if ((style & SWT.CHECK) != 0) {
- event = new Event ();
- event.item = items [tvItem.lParam];
- event.detail = SWT.CHECK;
- postEvent (SWT.Selection, event);
- }
- return LRESULT.ZERO;
- }
- break;
- }
- case OS.VK_UP:
- case OS.VK_DOWN:
- case OS.VK_PRIOR:
- case OS.VK_NEXT:
- case OS.VK_HOME:
- case OS.VK_END: {
- if ((style & SWT.SINGLE) != 0) break;
- if (OS.GetKeyState (OS.VK_SHIFT) < 0) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) {
- if (hAnchor == 0) hAnchor = hItem;
- ignoreSelect = ignoreDeselect = true;
- int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
- ignoreSelect = ignoreDeselect = false;
- int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- int hDeselectItem = hItem;
- RECT rect1 = new RECT ();
- rect1.left = hAnchor;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
- RECT rect2 = rect2 = new RECT ();
- rect2.left = hDeselectItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
- int flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
- while (hDeselectItem != hAnchor) {
- tvItem.hItem = hDeselectItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- hDeselectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hDeselectItem);
- }
- int hSelectItem = hAnchor;
- rect1.left = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
- rect2.left = hSelectItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
- tvItem.state = OS.TVIS_SELECTED;
- flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
- while (hSelectItem != hNewItem) {
- tvItem.hItem = hSelectItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- hSelectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hSelectItem);
- }
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- tvItem.mask = OS.TVIF_PARAM;
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- Event event = new Event ();
- event.item = items [tvItem.lParam];
- postEvent (SWT.Selection, event);
- return new LRESULT (code);
- }
- }
- if (OS.GetKeyState (OS.VK_CONTROL) < 0) {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- boolean oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
- int hNewItem = 0;
- switch (wParam) {
- case OS.VK_UP:
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PREVIOUSVISIBLE, hItem);
- break;
- case OS.VK_DOWN:
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hItem);
- break;
- case OS.VK_HOME:
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
- break;
- case OS.VK_PRIOR:
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
- if (hNewItem == hItem) {
- OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEUP, 0);
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
- }
- break;
- case OS.VK_NEXT:
- RECT rect = new RECT (), clientRect = new RECT ();
- OS.GetClientRect (handle, clientRect);
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
- do {
- int hVisible = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNewItem);
- if (hVisible == 0) break;
- rect.left = hVisible;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect);
- if (rect.bottom > clientRect.bottom) break;
- if ((hNewItem = hVisible) == hItem) {
- OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEDOWN, 0);
- }
- } while (hNewItem != 0);
- break;
- case OS.VK_END:
- hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0);
- break;
- }
- if (hNewItem != 0) {
- OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hNewItem);
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- boolean newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
- if (!newSelected && drawCount == 0) {
- OS.UpdateWindow (handle);
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
- }
- ignoreSelect = true;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
- ignoreSelect = false;
- if (oldSelected) {
- tvItem.state = OS.TVIS_SELECTED;
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- if (!newSelected) {
- tvItem.state = 0;
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- if (!newSelected && drawCount == 0) {
- RECT rect1 = new RECT (), rect2 = new RECT ();
- rect1.left = hItem; rect2.left = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
- if (OS.IsWinCE) {
- OS.InvalidateRect (handle, rect1, false);
- OS.InvalidateRect (handle, rect2, false);
- OS.UpdateWindow (handle);
- } else {
- int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
- OS.RedrawWindow (handle, rect1, 0, flags);
- OS.RedrawWindow (handle, rect2, 0, flags);
- }
- }
- return LRESULT.ZERO;
- }
- }
- }
- int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
- hAnchor = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- return new LRESULT (code);
- }
- }
- return result;
-}
-
-LRESULT WM_KILLFOCUS (int wParam, int lParam) {
- LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
- if ((style & SWT.SINGLE) != 0) return result;
- /*
- * Feature in Windows. When multiple item have
- * the TVIS_SELECTED state, Windows redraws only
- * the focused item in the color used to show the
- * selection when the tree loses or gains focus.
- * The fix is to force Windows to redraw all the
- * visible items when focus is gained or lost.
- */
- OS.InvalidateRect (handle, null, false);
- return result;
-}
-
-LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
-
- /*
- * Feature in Windows. When a tree item is
- * reselected, Windows does not issue a WM_NOTIFY.
- * This is inconsistent with the list widget and
- * other widgets in Windows. The fix is to detect
- * the case when an item is reselected and issue
- * the notification. The first part of this work
- * around is to ensure that the user has selected
- * an item.
- */
- TVHITTESTINFO lpht = new TVHITTESTINFO ();
- lpht.x = (short) (lParam & 0xFFFF);
- lpht.y = (short) (lParam >> 16);
- OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
- if (lpht.hItem == 0 || (lpht.flags & OS.TVHT_ONITEM) == 0) {
- sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
- int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
- if (OS.GetCapture () != handle) OS.SetCapture (handle);
- return new LRESULT (code);
- }
-
- /* Look for check/uncheck */
- if ((style & SWT.CHECK) != 0) {
- if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) {
- TVITEM tvItem = new TVITEM ();
- tvItem.hItem = lpht.hItem;
- tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- int state = tvItem.state >> 12;
- if ((state & 0x1) != 0) {
- state++;
- } else {
- --state;
- }
- tvItem.state = state << 12;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- Event event = new Event ();
- event.item = items [tvItem.lParam];
- event.detail = SWT.CHECK;
- postEvent (SWT.Selection, event);
- sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
- if (OS.GetCapture () != handle) OS.SetCapture (handle);
- return LRESULT.ZERO;
- }
- }
-
- /* Get the selected state of the item under the mouse */
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- boolean hittestSelected = false;
- if ((style & SWT.MULTI) != 0) {
- tvItem.hItem = lpht.hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- hittestSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
- }
-
- /* Get the selected state of the last selected item */
- int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if ((style & SWT.MULTI) != 0) {
- tvItem.hItem = hOldItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-
- /* Check for CONTROL or drag selection */
- if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
- if (drawCount == 0) {
- OS.UpdateWindow (handle);
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
- }
- } else {
- deselectAll ();
- }
- }
-
- /* Do the selection */
- sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
- dragStarted = false;
- ignoreDeselect = ignoreSelect = true;
- int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
- ignoreDeselect = ignoreSelect = false;
- if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle);
- int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-
- /*
- * Feature in Windows. When the old and new focused item
- * are the same, Windows does not check to make sure that
- * the item is actually selected, not just focused. The
- * fix is to force the item to draw selected by setting
- * the state mask. This is only necessary when the tree
- * is single select.
- */
- if ((style & SWT.SINGLE) != 0) {
- if (hOldItem == hNewItem) {
- tvItem.mask = OS.TVIF_STATE;
- tvItem.state = OS.TVIS_SELECTED;
- tvItem.stateMask = OS.TVIS_SELECTED;
- tvItem.hItem = hNewItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
-
- /* Reselect the last item that was unselected */
- if ((style & SWT.MULTI) != 0) {
-
- /* Check for CONTROL and reselect the last item */
- if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
- if (hOldItem == hNewItem && hOldItem == lpht.hItem) {
- if ((wParam & OS.MK_CONTROL) != 0) {
- tvItem.state ^= OS.TVIS_SELECTED;
- if (dragStarted) tvItem.state = OS.TVIS_SELECTED;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- } else {
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
- tvItem.state = OS.TVIS_SELECTED;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- if ((wParam & OS.MK_CONTROL) != 0 && !dragStarted) {
- if (hittestSelected) {
- tvItem.state = 0;
- tvItem.hItem = lpht.hItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
- }
- if (drawCount == 0) {
- RECT rect1 = new RECT (), rect2 = new RECT ();
- rect1.left = hOldItem; rect2.left = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
- /*
- * This code is intentionally commented.
- */
-// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
- OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
- if (OS.IsWinCE) {
- OS.InvalidateRect (handle, rect1, false);
- OS.InvalidateRect (handle, rect2, false);
- OS.UpdateWindow (handle);
- } else {
- int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
- OS.RedrawWindow (handle, rect1, 0, flags);
- OS.RedrawWindow (handle, rect2, 0, flags);
- }
- }
- }
-
- /* Check for SHIFT or normal select and delect/reselect items */
- if ((wParam & OS.MK_CONTROL) == 0) {
- if (!hittestSelected || !dragStarted) {
- tvItem.state = 0;
- int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
- for (int i=0; i<items.length; i++) {
- TreeItem item = items [i];
- if (item != null && item.handle != hNewItem) {
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- }
- }
- tvItem.hItem = hNewItem;
- tvItem.state = OS.TVIS_SELECTED;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
- if ((wParam & OS.MK_SHIFT) != 0) {
- RECT rect1 = new RECT ();
- if (hAnchor == 0) hAnchor = hNewItem;
- rect1.left = hAnchor;
- if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1) != 0) {
- RECT rect2 = rect2 = new RECT ();
- rect2.left = hNewItem;
- OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
- int flags = rect1.top < rect2.top ? OS.TVGN_NEXTVISIBLE : OS.TVGN_PREVIOUSVISIBLE;
- tvItem.state = OS.TVIS_SELECTED;
- int hItem = tvItem.hItem = hAnchor;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- while (hItem != hNewItem) {
- tvItem.hItem = hItem;
- OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
- hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hItem);
- }
- }
- }
- }
- }
- }
- if ((wParam & OS.MK_SHIFT) == 0) hAnchor = hNewItem;
-
- /* Issue notification */
- tvItem.hItem = hNewItem;
- tvItem.mask = OS.TVIF_PARAM;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- Event event = new Event ();
- event.item = items [tvItem.lParam];
- postEvent (SWT.Selection, event);
-
- /*
- * Feature in Windows. Inside WM_LBUTTONDOWN and WM_RBUTTONDOWN,
- * the widget starts a modal loop to determine if the user wants
- * to begin a drag/drop operation or marque select. Unfortunately,
- * this modal loop eats the corresponding mouse up. The fix is to
- * detect the cases when the modal loop has eaten the mouse up and
- * issue a fake mouse up.
- */
- if (dragStarted) {
- postEvent (SWT.DragDetect);
- } else {
- sendMouseEvent (SWT.MouseUp, 1, OS.WM_LBUTTONUP, wParam, lParam);
- }
- dragStarted = false;
- return new LRESULT (code);
-}
-
-LRESULT WM_RBUTTONDOWN (int wParam, int lParam) {
- /*
- * Feature in Windows. The receiver uses WM_RBUTTONDOWN
- * to initiate a drag/drop operation depending on how the
- * user moves the mouse. If the user clicks the right button,
- * without moving the mouse, the tree consumes the corresponding
- * WM_RBUTTONUP. The fix is to avoid calling the window proc for
- * the tree.
- */
- sendMouseEvent (SWT.MouseDown, 3, OS.WM_RBUTTONDOWN, wParam, lParam);
- /*
- * This code is intentionally commented.
- */
-// if (OS.GetCapture () != handle) OS.SetCapture (handle);
- setFocus ();
-
- /*
- * Feature in Windows. When the user selects a tree item
- * with the right mouse button, the item remains selected
- * only as long as the user does not release or move the
- * mouse. As soon as this happens, the selection snaps
- * back to the previous selection. This behavior can be
- * observed in the Explorer but is not instantly apparent
- * because the Explorer explicity sets the selection when
- * the user chooses a menu item. If the user cancels the
- * menu, the selection snaps back. The fix is to avoid
- * calling the window proc and do the selection ourselves.
- * This behavior is consistent with the table.
- */
- TVHITTESTINFO lpht = new TVHITTESTINFO ();
- lpht.x = (short) (lParam & 0xFFFF);
- lpht.y = (short) (lParam >> 16);
- OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
- if (lpht.hItem != 0 && (lpht.flags & (OS.TVHT_ONITEMICON | OS.TVHT_ONITEMLABEL)) != 0) {
- if ((wParam & (OS.MK_CONTROL | OS.MK_SHIFT)) == 0) {
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.stateMask = OS.TVIS_SELECTED;
- tvItem.hItem = lpht.hItem;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) == 0) {
- ignoreSelect = true;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, 0);
- ignoreSelect = false;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, lpht.hItem);
- }
- }
- }
- return LRESULT.ZERO;
-}
-
-LRESULT WM_SETFOCUS (int wParam, int lParam) {
- LRESULT result = super.WM_SETFOCUS (wParam, lParam);
- if ((style & SWT.SINGLE) != 0) return result;
- /*
- * Feature in Windows. When multiple item have
- * the TVIS_SELECTED state, Windows redraws only
- * the focused item in the color used to show the
- * selection when the tree loses or gains focus.
- * The fix is to force Windows to redraw all the
- * visible items when focus is gained or lost.
- */
- OS.InvalidateRect (handle, null, false);
- return result;
-}
-
-LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) {
- LRESULT result = super.WM_SYSCOLORCHANGE (wParam, lParam);
- if (result != null) return result;
- if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
- return result;
-}
-
-LRESULT wmNotifyChild (int wParam, int lParam) {
- NMHDR hdr = new NMHDR ();
- OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
- int code = hdr.code;
- switch (code) {
- case OS.NM_CUSTOMDRAW: {
- if (!customDraw) break;
- NMTVCUSTOMDRAW nmcd = new NMTVCUSTOMDRAW ();
- OS.MoveMemory (nmcd, lParam, NMTVCUSTOMDRAW.sizeof);
- switch (nmcd.dwDrawStage) {
- case OS.CDDS_PREPAINT: return new LRESULT (OS.CDRF_NOTIFYITEMDRAW);
- case OS.CDDS_ITEMPREPAINT:
- TreeItem item = items [nmcd.lItemlParam];
- /*
- * Feature on Windows. When a new tree item is inserted
- * using TVM_INSERTITEM and the tree is using custom draw,
- * a NM_CUSTOMDRAW is sent before TVM_INSERTITEM returns
- * and before the item is added to the items array. The
- * fix is to check for null.
- *
- * NOTE: This only happens on XP with the version 6.00 of
- * COMCTL32.DLL,
- */
- if (item == null) break;
- TVITEM tvItem = new TVITEM ();
- tvItem.mask = OS.TVIF_STATE;
- tvItem.hItem = item.handle;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- if ((tvItem.state & OS.TVIS_SELECTED) != 0) break;
- int clrText = item.foreground, clrTextBk = item.background;
- if (clrText == -1 && clrTextBk == -1) break;
- nmcd.clrText = clrText == -1 ? getForegroundPixel () : clrText;
- nmcd.clrTextBk = clrTextBk == -1 ? getBackgroundPixel () : clrTextBk;
- OS.MoveMemory (lParam, nmcd, NMTVCUSTOMDRAW.sizeof);
- return new LRESULT (OS.CDRF_NEWFONT);
- }
- break;
- }
- case OS.NM_DBLCLK:
- int pos = OS.GetMessagePos ();
- TVHITTESTINFO lpht = new TVHITTESTINFO ();
- POINT pt = new POINT ();
- pt.x = (short) (pos & 0xFFFF);
- pt.y = (short) (pos >> 16);
- OS.ScreenToClient (handle, pt);
- lpht.x = pt.x; lpht.y = pt.y;
- OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
- if ((lpht.flags & OS.TVHT_ONITEM) == 0) break;
- // FALL THROUGH
- case OS.NM_RETURN:
- case OS.TVN_SELCHANGEDA:
- case OS.TVN_SELCHANGEDW:
- if (!ignoreSelect) {
- TVITEM tvItem = null;
- if (code == OS.TVN_SELCHANGED) {
- tvItem = new TVITEM ();
- int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
- OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
- hAnchor = tvItem.hItem;
- } else {
- int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
- if (hItem != 0) {
- tvItem = new TVITEM ();
- tvItem.hItem = hItem;
- tvItem.mask = OS.TVIF_PARAM;
- OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
- }
- }
- Event event = new Event ();
- if (tvItem != null) {
- event.item = items [tvItem.lParam];
- }
- if (code == OS.TVN_SELCHANGED) {
- postEvent (SWT.Selection, event);
- } else {
- postEvent (SWT.DefaultSelection, event);
- }
- }
- if (code == OS.NM_DBLCLK && hooks (SWT.DefaultSelection)) {
- return LRESULT.ONE;
- }
- break;
- case OS.TVN_SELCHANGINGA:
- case OS.TVN_SELCHANGINGW:
- if (!ignoreSelect && !ignoreDeselect) {
- hAnchor = 0;
- if ((style & SWT.MULTI) != 0) deselectAll ();
- }
- break;
- case OS.TVN_ITEMEXPANDINGA:
- case OS.TVN_ITEMEXPANDINGW:
- if (!ignoreExpand) {
- TVITEM tvItem = new TVITEM ();
- int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
- OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
- int [] action = new int [1];
- OS.MoveMemory (action, lParam + NMHDR.sizeof, 4);
- Event event = new Event ();
- event.item = items [tvItem.lParam];
- /*
- * It is possible (but unlikely), that application
- * code could have disposed the widget in the expand
- * or collapse event. If this happens, end the
- * processing of the Windows message by returning
- * zero as the result of the window proc.
- */
- if (action [0] == OS.TVE_EXPAND) {
- sendEvent (SWT.Expand, event);
- if (isDisposed ()) return LRESULT.ZERO;
- }
- if (action [0] == OS.TVE_COLLAPSE) {
- sendEvent (SWT.Collapse, event);
- if (isDisposed ()) return LRESULT.ZERO;
- }
- }
- break;
- case OS.TVN_BEGINDRAGA:
- case OS.TVN_BEGINDRAGW:
- case OS.TVN_BEGINRDRAGA:
- case OS.TVN_BEGINRDRAGW:
- TVITEM tvItem = new TVITEM ();
- int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
- OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
- if (tvItem.hItem != 0 && (tvItem.state & OS.TVIS_SELECTED) == 0) {
- ignoreSelect = ignoreDeselect = true;
- OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, tvItem.hItem);
- ignoreSelect = ignoreDeselect = false;
- }
- dragStarted = true;
- break;
- }
- return super.wmNotifyChild (wParam, lParam);
-}
-
-}
+ * http://www.eclipse.org/legal/cpl-v10.html + */ + +import org.eclipse.swt.internal.win32.*; +import org.eclipse.swt.*; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.events.*; + +/** + * Instances of this class provide a selectable user interface object + * that displays a hierarchy of items and issue notificiation when an + * item in the hierarchy is selected. + * <p> + * The item children that may be added to instances of this class + * must be of type <code>TreeItem</code>. + * </p><p> + * Note that although this class is a subclass of <code>Composite</code>, + * it does not make sense to add <code>Control</code> children to it, + * or set a layout on it. + * </p><p> + * <dl> + * <dt><b>Styles:</b></dt> + * <dd>SINGLE, MULTI, CHECK</dd> + * <dt><b>Events:</b></dt> + * <dd>Selection, DefaultSelection, Collapse, Expand</dd> + * </dl> + * <p> + * Note: Only one of the styles SINGLE and MULTI may be specified. + * </p><p> + * IMPORTANT: This class is <em>not</em> intended to be subclassed. + * </p> + */ +public class Tree extends Composite { + int hAnchor; + TreeItem [] items; + ImageList imageList; + boolean dragStarted; + boolean ignoreSelect, ignoreExpand, ignoreDeselect; + boolean customDraw; + static final int TreeProc; + static final TCHAR TreeClass = new TCHAR (0, OS.WC_TREEVIEW, true); + static { + WNDCLASS lpWndClass = new WNDCLASS (); + OS.GetClassInfo (0, TreeClass, lpWndClass); + TreeProc = lpWndClass.lpfnWndProc; + } + +/** + * Constructs a new instance of this class given its parent + * and a style value describing its behavior and appearance. + * <p> + * The style value is either one of the style constants defined in + * class <code>SWT</code> which is applicable to instances of this + * class, or must be built by <em>bitwise OR</em>'ing together + * (that is, using the <code>int</code> "|" operator) two or more + * of those <code>SWT</code> style constants. The class description + * lists the style constants that are applicable to the class. + * Style bits are also inherited from superclasses. + * </p> + * + * @param parent a composite control which will be the parent of the new instance (cannot be null) + * @param style the style of control to construct + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> + * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> + * </ul> + * + * @see SWT#SINGLE + * @see SWT#MULTI + * @see SWT#CHECK + * @see Widget#checkSubclass + * @see Widget#getStyle + */ +public Tree (Composite parent, int style) { + super (parent, checkStyle (style)); +} + +/** + * Adds the listener to the collection of listeners who will + * be notified when the receiver's selection changes, by sending + * it one of the messages defined in the <code>SelectionListener</code> + * interface. + * <p> + * When <code>widgetSelected</code> is called, the item field of the event object is valid. + * If the reciever has <code>SWT.CHECK</code> style set and the check selection changes, + * the event object detail field contains the value <code>SWT.CHECK</code>. + * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked. + * The item field of the event object is valid for default selection, but the detail field is not used. + * </p> + * + * @param listener the listener which should be notified + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see SelectionListener + * @see #removeSelectionListener + * @see SelectionEvent + */ +public void addSelectionListener(SelectionListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + TypedListener typedListener = new TypedListener (listener); + addListener (SWT.Selection, typedListener); + addListener (SWT.DefaultSelection, typedListener); +} + +/** + * Adds the listener to the collection of listeners who will + * be notified when an item in the receiver is expanded or collapsed + * by sending it one of the messages defined in the <code>TreeListener</code> + * interface. + * + * @param listener the listener which should be notified + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see TreeListener + * @see #removeTreeListener + */ +public void addTreeListener(TreeListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + TypedListener typedListener = new TypedListener (listener); + addListener (SWT.Expand, typedListener); + addListener (SWT.Collapse, typedListener); +} + +int callWindowProc (int msg, int wParam, int lParam) { + if (handle == 0) return 0; + return OS.CallWindowProc (TreeProc, handle, msg, wParam, lParam); +} + +static int checkStyle (int style) { + /* + * Feature in Windows. It is not possible to create + * a tree that scrolls and does not have scroll bars. + * The TVS_NOSCROLL style will remove the scroll bars + * but the tree will never scroll. Therefore, no matter + * what style bits are specified, set the H_SCROLL and + * V_SCROLL bits so that the SWT style will match the + * widget that Windows creates. + */ + style |= SWT.H_SCROLL | SWT.V_SCROLL; + return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0); +} + + +public Point computeSize (int wHint, int hHint, boolean changed) { + checkWidget (); + int width = 0, height = 0; + RECT rect = new RECT (); + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + while (hItem != 0) { + rect.left = hItem; + if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) { + width = Math.max (width, rect.right - rect.left); + height += rect.bottom - rect.top; + } + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem); + } + width = width * 2; + if (width == 0) width = DEFAULT_WIDTH; + if (height == 0) height = DEFAULT_HEIGHT; + if (wHint != SWT.DEFAULT) width = wHint; + if (hHint != SWT.DEFAULT) height = hHint; + int border = getBorderWidth (); + width += border * 2; height += border * 2; + if ((style & SWT.V_SCROLL) != 0) { + width += OS.GetSystemMetrics (OS.SM_CXVSCROLL); + } + if ((style & SWT.H_SCROLL) != 0) { + height += OS.GetSystemMetrics (OS.SM_CYHSCROLL); + } + return new Point (width, height); +} + +void createHandle () { + super.createHandle (); + state &= ~CANVAS; + + /* Set the checkbox image list */ + if ((style & SWT.CHECK) != 0) setCheckboxImageList (); + + /* + * Feature in Windows. When the control is created, + * it does not use the default system font. A new HFONT + * is created and destroyed when the control is destroyed. + * This means that a program that queries the font from + * this control, uses the font in another control and then + * destroys this control will have the font unexpectedly + * destroyed in the other control. The fix is to assign + * the font ourselves each time the control is created. + * The control will not destroy a font that it did not + * create. + */ + int hFont = OS.GetStockObject (OS.SYSTEM_FONT); + OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0); +} + +void createItem (TreeItem item, int hParent, int hInsertAfter) { + item.foreground = item.background = -1; + int id = 0; + while (id < items.length && items [id] != null) id++; + if (id == items.length) { + TreeItem [] newItems = new TreeItem [items.length + 4]; + System.arraycopy (items, 0, newItems, 0, items.length); + items = newItems; + } + TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT (); + tvInsert.hParent = hParent; + tvInsert.hInsertAfter = hInsertAfter; + tvInsert.lParam = id; + tvInsert.iImage = OS.I_IMAGENONE; + tvInsert.iSelectedImage = tvInsert.iImage; + tvInsert.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM | OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE; + + /* Set the initial unchecked state */ + if ((style & SWT.CHECK) != 0) { + tvInsert.mask = tvInsert.mask | OS.TVIF_STATE; + tvInsert.state = 1 << 12; + tvInsert.stateMask = OS.TVIS_STATEIMAGEMASK; + } + + /* Insert the item */ + int hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert); + if (hItem == 0) error (SWT.ERROR_ITEM_NOT_ADDED); + item.handle = hItem; + items [id] = item; + + /* + * This code is intentionally commented. + */ +// if (hParent != 0) { +// int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); +// bits |= OS.TVS_LINESATROOT; +// OS.SetWindowLong (handle, OS.GWL_STYLE, bits); +// } + + /* + * Bug in Windows. When a child item is added to a parent item + * that has no children outside of WM_NOTIFY with control code + * TVN_ITEMEXPANDED, the tree widget does not redraw the +/- + * indicator. The fix is to detect this case and force a redraw. + */ + if (!OS.IsWindowVisible (handle) || drawCount > 0) return; + int hChild = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent); + if (hChild == 0 || OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hChild) != 0) { + return; + } + RECT rect = new RECT (); + rect.left = hParent; + if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) { + OS.InvalidateRect (handle, rect, false); + } +} + +void createWidget () { + super.createWidget (); + items = new TreeItem [4]; +} + +int defaultBackground () { + return OS.GetSysColor (OS.COLOR_WINDOW); +} + +/** + * Deselects all selected items in the receiver. + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public void deselectAll () { + checkWidget (); + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + if ((style & SWT.SINGLE) != 0) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) { + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + return; + } + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); +} + +void destroyItem (TreeItem item) { + int hItem = item.handle; + boolean fixRedraw = false; + if (drawCount == 0 && OS.IsWindowVisible (handle)) { + RECT rect = new RECT (); + rect.left = hItem; + fixRedraw = OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) == 0; + } + if (fixRedraw) { + OS.UpdateWindow (handle); + OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0); + } + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM; + releaseItems (item.getItems (), tvItem); + releaseItem (item, tvItem); + OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem); + if (fixRedraw) { + OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0); + OS.ValidateRect (handle, null); + } + int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0); + if (count == 0) { + if (imageList != null) { + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0); + Display display = getDisplay (); + display.releaseImageList (imageList); + } + imageList = null; + customDraw = false; + items = new TreeItem [4]; + } +} + +int getBackgroundPixel () { + if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW); + int pixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0); + if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOW); + return pixel; +} + +int getForegroundPixel () { + if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOWTEXT); + int pixel = OS.SendMessage (handle, OS.TVM_GETTEXTCOLOR, 0, 0); + if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOWTEXT); + return pixel; +} + +/** + * Returns the item at the given point in the receiver + * or null if no such item exists. The point is in the + * coordinate system of the receiver. + * + * @param point the point used to locate the item + * @return the item at the given point + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the point is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public TreeItem getItem (Point point) { + checkWidget (); + if (point == null) error (SWT.ERROR_NULL_ARGUMENT); + TVHITTESTINFO lpht = new TVHITTESTINFO (); + lpht.x = point.x; lpht.y = point.y; + OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht); + if (lpht.hItem != 0 && (lpht.flags & OS.TVHT_ONITEM) != 0) { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM; + tvItem.hItem = lpht.hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + return items [tvItem.lParam]; + } + return null; +} + +/** + * Returns the number of items contained in the receiver + * that are direct item children of the receiver. The + * number that is returned is the number of roots in the + * tree. + * + * @return the number of items + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public int getItemCount () { + checkWidget (); + int count = 0; + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + while (hItem != 0) { + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem); + count++; + } + return count; +} + +/** + * Returns the height of the area which would be used to + * display <em>one</em> of the items in the tree. + * + * @return the height of one item + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public int getItemHeight () { + checkWidget (); + return OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0); +} + +/** + * Returns the number of items contained in the receiver + * that are direct item children of the receiver. These + * are the roots of the tree. + * <p> + * Note: This is not the actual structure used by the receiver + * to maintain its list of items, so modifying the array will + * not affect the receiver. + * </p> + * + * @return the number of items + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public TreeItem [] getItems () { + checkWidget (); + int count = 0; + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + while (hItem != 0) { + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem); + count++; + } + int index = 0; + TreeItem [] result = new TreeItem [count]; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM; + tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + while (tvItem.hItem != 0) { + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + result [index++] = items [tvItem.lParam]; + tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, tvItem.hItem); + } + return result; +} + +/** + * Returns the receiver's parent item, which must be a + * <code>TreeItem</code> or null when the receiver is a + * root. + * + * @return the receiver's parent item + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public TreeItem getParentItem () { + checkWidget (); + return null; +} + +/** + * Returns an array of <code>TreeItem</code>s that are currently + * selected in the receiver. An empty array indicates that no + * items are selected. + * <p> + * Note: This is not the actual structure used by the receiver + * to maintain its selection, so modifying the array will + * not affect the receiver. + * </p> + * @return an array representing the selection + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public TreeItem [] getSelection () { + checkWidget (); + if ((style & SWT.SINGLE) != 0) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem == 0) return new TreeItem [0]; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) == 0) return new TreeItem [0]; + return new TreeItem [] {items [tvItem.lParam]}; + } + int count = 0; + TreeItem [] guess = new TreeItem [8]; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + if (count < guess.length) guess [count] = item; + count++; + } + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); + if (count == 0) return new TreeItem [0]; + if (count == guess.length) return guess; + TreeItem [] result = new TreeItem [count]; + if (count < guess.length) { + System.arraycopy (guess, 0, result, 0, count); + return result; + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + int index = 0; + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + result [index++] = item; + } + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); + return result; +} + +/** + * Returns the number of selected items contained in the receiver. + * + * @return the number of selected items + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public int getSelectionCount () { + checkWidget (); + if ((style & SWT.SINGLE) != 0) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem == 0) return 0; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) == 0) return 0; + return 1; + } + int count = 0; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) count++; + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); + return count; +} + +/** + * Returns the item which is currently at the top of the receiver. + * This item can change when items are expanded, collapsed, scrolled + * or new items are added or removed. + * + * @return the item at the top of the receiver + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @since 2.1 + */ +public TreeItem getTopItem () { + checkWidget (); + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); + if (hItem == 0) return null; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_PARAM; + tvItem.hItem = hItem; + if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) == 0) return null; + return items [tvItem.lParam]; +} + +int imageIndex (Image image) { + if (image == null) return OS.I_IMAGENONE; + if (imageList == null) { + int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0); + if (hOldList != 0) OS.ImageList_Destroy (hOldList); + Rectangle bounds = image.getBounds (); + imageList = getDisplay ().getImageList (new Point (bounds.width, bounds.height)); + int index = imageList.indexOf (image); + if (index == -1) index = imageList.add (image); + int hImageList = imageList.getHandle (); + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, hImageList); + return index; + } + int index = imageList.indexOf (image); + if (index != -1) return index; + return imageList.add (image); +} + +boolean releaseItem (TreeItem item, TVITEM tvItem) { + int hItem = item.handle; + if (hItem == hAnchor) hAnchor = 0; + if (item.isDisposed ()) return false; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + items [tvItem.lParam] = null; + return true; +} + +void releaseItems (TreeItem [] nodes, TVITEM tvItem) { + for (int i=0; i<nodes.length; i++) { + TreeItem item = nodes [i]; + TreeItem [] sons = item.getItems (); + if (sons.length != 0) { + releaseItems (sons, tvItem); + } + if (releaseItem (item, tvItem)) { + item.releaseResources (); + } + } +} + +void releaseWidget () { + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null && !item.isDisposed ()) { + item.releaseResources (); + } + } + /* + * Feature in Windows. For some reason, when + * TVM_GETIMAGELIST or TVM_SETIMAGELIST is sent, + * the tree issues NM_CUSTOMDRAW messages. This + * behavior is unwanted when the tree is being + * disposed. The fix is to ingore NM_CUSTOMDRAW + * messages by usnig the custom draw flag. + * + * NOTE: This only happens on Windows XP. + */ + customDraw = false; + items = null; + if (imageList != null) { + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0); + Display display = getDisplay (); + display.releaseImageList (imageList); + } else { + int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0); + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0); + if (hOldList != 0) OS.ImageList_Destroy (hOldList); + } + imageList = null; + int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0); + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, 0); + if (hOldList != 0) OS.ImageList_Destroy (hOldList); + super.releaseWidget (); +} + + +/** + * Removes all of the items from the receiver. + * <p> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public void removeAll () { + checkWidget (); + ignoreDeselect = ignoreSelect = true; + if (drawCount == 0) { + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0); + } + int result = OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, OS.TVI_ROOT); + if (drawCount == 0) { + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0); + OS.InvalidateRect (handle, null, true); + } + ignoreDeselect = ignoreSelect = false; + if (result == 0) error (SWT.ERROR_ITEM_NOT_REMOVED); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null && !item.isDisposed ()) { + item.releaseResources (); + } + } + if (imageList != null) { + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0); + Display display = getDisplay (); + display.releaseImageList (imageList); + } + imageList = null; + customDraw = false; + items = new TreeItem [4]; + hAnchor = 0; +} + +/** + * Removes the listener from the collection of listeners who will + * be notified when the receiver's selection changes. + * + * @param listener the listener which should no longer be notified + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see SelectionListener + * @see #addSelectionListener + */ +public void removeSelectionListener (SelectionListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + eventTable.unhook (SWT.Selection, listener); + eventTable.unhook (SWT.DefaultSelection, listener); +} + +/** + * Removes the listener from the collection of listeners who will + * be notified when items in the receiver are expanded or collapsed.. + * + * @param listener the listener which should no longer be notified + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see TreeListener + * @see #addTreeListener + */ +public void removeTreeListener(TreeListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + if (eventTable == null) return; + eventTable.unhook (SWT.Expand, listener); + eventTable.unhook (SWT.Collapse, listener); +} + +/** + * Display a mark indicating the point at which an item will be inserted. + * The drop insert item has a visual hint to show where a dragged item + * will be inserted when dropped on the tree. + * + * @param item the insert item. Null will clear the insertion mark. + * @param after true places the insert mark above 'item'. false places + * the insert mark below 'item'. + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public void setInsertMark (TreeItem item, boolean before) { + checkWidget (); + int hItem = 0; + if (item != null) { + if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); + hItem = item.handle; + } + OS.SendMessage (handle, OS.TVM_SETINSERTMARK, (before) ? 0 : 1, hItem); +} + +/** + * Selects all the items in the receiver. + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + */ +public void selectAll () { + checkWidget (); + if ((style & SWT.SINGLE) != 0) return; + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem == 0) { + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + if (hItem != 0) { + ignoreSelect = true; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hItem); + ignoreSelect = false; + } + } + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.state = OS.TVIS_SELECTED; + tvItem.stateMask = OS.TVIS_SELECTED; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); +} + +void setBackgroundPixel (int pixel) { + if (background == pixel) return; + background = pixel; + /* + * Bug in Windows. When TVM_GETBKCOLOR is used more + * than once to set the background color of a tree, + * the background color of the lines and the plus/minus + * does not change to the new color. The fix is to set + * the background color to the default before setting + * the new color. + */ + int oldPixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0); + if (oldPixel != -1) OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, -1); + OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, pixel); + if ((style & SWT.CHECK) != 0) setCheckboxImageList (); +} + +void setBounds (int x, int y, int width, int height, int flags) { + /* + * Ensure that the selection is visible when the tree is resized + * from a zero size to a size that can show the selection. + */ + boolean fixSelection = false; + if ((flags & OS.SWP_NOSIZE) == 0 && (width != 0 || height != 0)) { + if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) { + fixSelection = true; + } + } + super.setBounds (x, y, width, height, flags); + if (fixSelection) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) showItem (hItem); + } +} + +void setCheckboxImageList () { + if ((style & SWT.CHECK) == 0) return; + int count = 5; + int height = OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0), width = height; + int hImageList = OS.ImageList_Create (width, height, OS.ILC_COLOR, count, count); + int hDC = OS.GetDC (handle); + int memDC = OS.CreateCompatibleDC (hDC); + int hBitmap = OS.CreateCompatibleBitmap (hDC, width * count, height); + int hOldBitmap = OS.SelectObject (memDC, hBitmap); + RECT rect = new RECT (); + OS.SetRect (rect, 0, 0, width * count, height); + int hBrush = OS.CreateSolidBrush (getBackgroundPixel ()); + OS.FillRect (memDC, rect, hBrush); + OS.DeleteObject (hBrush); + int oldFont = OS.SelectObject (hDC, defaultFont ()); + TEXTMETRIC tm = new TEXTMETRIC (); + OS.GetTextMetrics (hDC, tm); + OS.SelectObject (hDC, oldFont); + int itemWidth = Math.min (tm.tmHeight, width); + int itemHeight = Math.min (tm.tmHeight, height); + int left = (width - itemWidth) / 2, top = (height - itemHeight) / 2 + 1; + OS.SetRect (rect, left + width, top, left + width + itemWidth, top + itemHeight); + OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_FLAT); + rect.left += width; rect.right += width; + OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_FLAT); + rect.left += width; rect.right += width; + OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_INACTIVE | OS.DFCS_FLAT); + rect.left += width; rect.right += width; + OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_INACTIVE | OS.DFCS_FLAT); + OS.SelectObject (memDC, hOldBitmap); + OS.DeleteDC (memDC); + OS.ReleaseDC (handle, hDC); + OS.ImageList_AddMasked (hImageList, hBitmap, 0); + OS.DeleteObject (hBitmap); + int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0); + OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, hImageList); + if (hOldList != 0) OS.ImageList_Destroy (hOldList); +} + +void setForegroundPixel (int pixel) { + if (foreground == pixel) return; + foreground = pixel; + OS.SendMessage (handle, OS.TVM_SETTEXTCOLOR, 0, pixel); +} + +public void setRedraw (boolean redraw) { + checkWidget (); + /* + * Bug in Windows. For some reason, when WM_SETREDRAW + * is used to turn redraw on for a tree and the tree + * contains no items, the last item in the tree does + * not redraw properly. If the tree has only one item, + * that item is not drawn. If another window is dragged + * on top of the item, parts of the item are redrawn + * and erased at random. The fix is to ensure that this + * case doesn't happen by inserting and deleting an item + * when redraw is turned on and there are no items in + * the tree. + */ + int hItem = 0; + if (redraw) { + int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0); + if (count == 0) { + TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT (); + tvInsert.hInsertAfter = OS.TVI_FIRST; + hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert); + } + } + super.setRedraw (redraw); + if (hItem != 0) { + OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem); + } +} + +/** + * Sets the receiver's selection to be the given array of items. + * The current selected is first cleared, then the new items are + * selected. + * + * @param items the array of items + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the array of items is null</li> + * <li>ERROR_INVALID_ARGUMENT - if one of the item has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see Tree#deselectAll() + */ +public void setSelection (TreeItem [] items) { + checkWidget (); + if (items == null) error (SWT.ERROR_NULL_ARGUMENT); + + /* Select/deselect the first item */ + int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (items.length == 0) { + if (hOldItem != 0) { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + tvItem.hItem = hOldItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } else { + int hNewItem = 0; + TreeItem item = items [0]; + if (item != null) { + if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); + hAnchor = hNewItem = item.handle; + } + ignoreSelect = true; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem); + ignoreSelect = false; + /* + * Feature in Windows. When the old and new focused item + * are the same, Windows does not check to make sure that + * the item is actually selected, not just focused. The + * fix is to force the item to draw selected by setting + * the state mask. + */ + if (hOldItem == hNewItem) { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.state = OS.TVIS_SELECTED; + tvItem.stateMask = OS.TVIS_SELECTED; + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + showItem (hNewItem); + } + if ((style & SWT.SINGLE) != 0) return; + + /* Select/deselect the rest of the items */ + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<this.items.length; i++) { + TreeItem item = this.items [i]; + if (item != null) { + int index = 0; + while (index < items.length) { + if (items [index] == item) break; + index++; + } + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + if (index == items.length) { + tvItem.state = 0; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } else { + if (index != items.length) { + tvItem.state = OS.TVIS_SELECTED; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + } + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); +} + +/** + * Sets the item which is currently at the top of the receiver. + * This item can change when items are expanded, collapsed, scrolled + * or new items are added or removed. + * + * @param item the item to be shown + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the item is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see Tree#getTopItem() + * + * @since 2.1 + */ +public void setTopItem (TreeItem item) { + checkWidget (); + if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); + if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, item.handle); +} + +void showItem (int hItem) { + /* + * Bug in Windows. When TVM_ENSUREVISIBLE is used to ensure + * that an item is visible and the client area of the tree is + * smaller that the size of one item, TVM_ENSUREVISIBLE makes + * the next item in the tree visible by making it the top item + * instead of making the desired item visible. The fix is to + * detect the case when the client area is too small and make + * the desired visible item be the top item in the tree. + */ + if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) { + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem); + OS.SendMessage (handle, OS.WM_HSCROLL, OS.SB_TOP ,0); + } else { + boolean scroll = true; + RECT itemRect = new RECT (); + itemRect.left = hItem; + if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) { + RECT rect = new RECT (); + OS.GetClientRect (handle, rect); + POINT pt = new POINT (); + pt.x = itemRect.left; + pt.y = itemRect.top; + if (OS.PtInRect (rect, pt)) { + pt.y = itemRect.bottom; + if (OS.PtInRect (rect, pt)) scroll = false; + } + } + if (scroll) OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem); + } +} + +/** + * Shows the item. If the item is already showing in the receiver, + * this method simply returns. Otherwise, the items are scrolled + * and expanded until the item is visible. + * + * @param item the item to be shown + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the item is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see Tree#showSelection() + */ +public void showItem (TreeItem item) { + checkWidget (); + if (item == null) error (SWT.ERROR_NULL_ARGUMENT); + if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT); + showItem (item.handle); +} + +/** + * Shows the selection. If the selection is already showing in the receiver, + * this method simply returns. Otherwise, the items are scrolled until + * the selection is visible. + * + * @exception SWTException <ul> + * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> + * </ul> + * + * @see Tree#showItem(TreeItem) + */ +public void showSelection () { + checkWidget (); + int hItem = 0; + if ((style & SWT.SINGLE) != 0) { + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem == 0) return; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) == 0) return; + } else { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + int index = 0; + while (index <items.length) { + TreeItem item = items [index]; + if (item != null) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + hItem = tvItem.hItem; + break; + } + } + index++; + } + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); + } + if (hItem != 0) showItem (hItem); +} + +String toolTipText (NMTTDISPINFO hdr) { + int hwndToolTip = OS.SendMessage (handle, OS.TVM_GETTOOLTIPS, 0, 0); + if (hwndToolTip == hdr.hwndFrom && toolTipText != null) return ""; + return super.toolTipText (hdr); +} + +int widgetStyle () { + int bits = super.widgetStyle () | OS.TVS_SHOWSELALWAYS; + bits |= OS.TVS_LINESATROOT | OS.TVS_HASLINES | OS.TVS_HASBUTTONS; + /* + * This code is intentionally commented. In future, + * FULL_SELECTION may be implemented for trees. + */ +// if ((style & SWT.FULL_SELECTION) != 0) { +// bits |= OS.TVS_FULLROWSELECT; +// } else { +// bits |= OS.TVS_HASLINES | OS.TVS_HASBUTTONS; +// } +// bits |= OS.TVS_NOTOOLTIPS; + return bits; +} + +TCHAR windowClass () { + return TreeClass; +} + +int windowProc () { + return TreeProc; +} + +LRESULT WM_CHAR (int wParam, int lParam) { + LRESULT result = super.WM_CHAR (wParam, lParam); + if (result != null) return result; + /* + * Feature in Windows. The tree control beeps + * in WM_CHAR when the search for the item that + * matches the key stroke fails. This is the + * standard tree behavior but is unexpected when + * the key that was typed was ESC, CR or SPACE. + * The fix is to avoid calling the tree window + * proc in these cases. + */ + switch (wParam) { + case OS.VK_ESCAPE: + case OS.VK_RETURN: + case OS.VK_SPACE: return LRESULT.ZERO; + } + return result; +} + +LRESULT WM_GETOBJECT (int wParam, int lParam) { + /* + * Ensure that there is an accessible object created for this + * control because support for checked item accessibility is + * temporarily implemented in the accessibility package. + */ + if ((style & SWT.CHECK) != 0) { + if (accessible == null) accessible = new_Accessible (this); + } + return super.WM_GETOBJECT (wParam, lParam); +} + +LRESULT WM_KEYDOWN (int wParam, int lParam) { + LRESULT result = super.WM_KEYDOWN (wParam, lParam); + if (result != null) return result; + switch (wParam) { + case OS.VK_SPACE: { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) { + hAnchor = hItem; + OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem); + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM; + tvItem.hItem = hItem; + if ((style & SWT.CHECK) != 0) { + tvItem.stateMask = OS.TVIS_STATEIMAGEMASK; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + int state = tvItem.state >> 12; + if ((state & 0x1) != 0) { + state++; + } else { + --state; + } + tvItem.state = state << 12; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + tvItem.stateMask = OS.TVIS_SELECTED; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((style & SWT.MULTI) != 0 && OS.GetKeyState (OS.VK_CONTROL) < 0) { + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + tvItem.state &= ~OS.TVIS_SELECTED; + } else { + tvItem.state |= OS.TVIS_SELECTED; + } + } else { + tvItem.state |= OS.TVIS_SELECTED; + } + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + Event event = new Event (); + event.item = items [tvItem.lParam]; + postEvent (SWT.Selection, event); + if ((style & SWT.CHECK) != 0) { + event = new Event (); + event.item = items [tvItem.lParam]; + event.detail = SWT.CHECK; + postEvent (SWT.Selection, event); + } + return LRESULT.ZERO; + } + break; + } + case OS.VK_UP: + case OS.VK_DOWN: + case OS.VK_PRIOR: + case OS.VK_NEXT: + case OS.VK_HOME: + case OS.VK_END: { + if ((style & SWT.SINGLE) != 0) break; + if (OS.GetKeyState (OS.VK_SHIFT) < 0) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) { + if (hAnchor == 0) hAnchor = hItem; + ignoreSelect = ignoreDeselect = true; + int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam); + ignoreSelect = ignoreDeselect = false; + int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + int hDeselectItem = hItem; + RECT rect1 = new RECT (); + rect1.left = hAnchor; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1); + RECT rect2 = rect2 = new RECT (); + rect2.left = hDeselectItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2); + int flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE; + while (hDeselectItem != hAnchor) { + tvItem.hItem = hDeselectItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + hDeselectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hDeselectItem); + } + int hSelectItem = hAnchor; + rect1.left = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1); + rect2.left = hSelectItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2); + tvItem.state = OS.TVIS_SELECTED; + flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE; + while (hSelectItem != hNewItem) { + tvItem.hItem = hSelectItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + hSelectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hSelectItem); + } + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + tvItem.mask = OS.TVIF_PARAM; + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + Event event = new Event (); + event.item = items [tvItem.lParam]; + postEvent (SWT.Selection, event); + return new LRESULT (code); + } + } + if (OS.GetKeyState (OS.VK_CONTROL) < 0) { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + boolean oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0; + int hNewItem = 0; + switch (wParam) { + case OS.VK_UP: + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PREVIOUSVISIBLE, hItem); + break; + case OS.VK_DOWN: + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hItem); + break; + case OS.VK_HOME: + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); + break; + case OS.VK_PRIOR: + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); + if (hNewItem == hItem) { + OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEUP, 0); + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); + } + break; + case OS.VK_NEXT: + RECT rect = new RECT (), clientRect = new RECT (); + OS.GetClientRect (handle, clientRect); + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0); + do { + int hVisible = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNewItem); + if (hVisible == 0) break; + rect.left = hVisible; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect); + if (rect.bottom > clientRect.bottom) break; + if ((hNewItem = hVisible) == hItem) { + OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEDOWN, 0); + } + } while (hNewItem != 0); + break; + case OS.VK_END: + hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0); + break; + } + if (hNewItem != 0) { + OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hNewItem); + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + boolean newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0; + if (!newSelected && drawCount == 0) { + OS.UpdateWindow (handle); + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0); + } + ignoreSelect = true; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem); + ignoreSelect = false; + if (oldSelected) { + tvItem.state = OS.TVIS_SELECTED; + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + if (!newSelected) { + tvItem.state = 0; + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + if (!newSelected && drawCount == 0) { + RECT rect1 = new RECT (), rect2 = new RECT (); + rect1.left = hItem; rect2.left = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1); + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0); + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0); + if (OS.IsWinCE) { + OS.InvalidateRect (handle, rect1, false); + OS.InvalidateRect (handle, rect2, false); + OS.UpdateWindow (handle); + } else { + int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE; + OS.RedrawWindow (handle, rect1, 0, flags); + OS.RedrawWindow (handle, rect2, 0, flags); + } + } + return LRESULT.ZERO; + } + } + } + int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam); + hAnchor = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + return new LRESULT (code); + } + } + return result; +} + +LRESULT WM_KILLFOCUS (int wParam, int lParam) { + LRESULT result = super.WM_KILLFOCUS (wParam, lParam); + if ((style & SWT.SINGLE) != 0) return result; + /* + * Feature in Windows. When multiple item have + * the TVIS_SELECTED state, Windows redraws only + * the focused item in the color used to show the + * selection when the tree loses or gains focus. + * The fix is to force Windows to redraw all the + * visible items when focus is gained or lost. + */ + OS.InvalidateRect (handle, null, false); + return result; +} + +LRESULT WM_LBUTTONDOWN (int wParam, int lParam) { + + /* + * Feature in Windows. When a tree item is + * reselected, Windows does not issue a WM_NOTIFY. + * This is inconsistent with the list widget and + * other widgets in Windows. The fix is to detect + * the case when an item is reselected and issue + * the notification. The first part of this work + * around is to ensure that the user has selected + * an item. + */ + TVHITTESTINFO lpht = new TVHITTESTINFO (); + lpht.x = (short) (lParam & 0xFFFF); + lpht.y = (short) (lParam >> 16); + OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht); + if (lpht.hItem == 0 || (lpht.flags & OS.TVHT_ONITEM) == 0) { + sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam); + int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam); + if (OS.GetCapture () != handle) OS.SetCapture (handle); + return new LRESULT (code); + } + + /* Look for check/uncheck */ + if ((style & SWT.CHECK) != 0) { + if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) { + TVITEM tvItem = new TVITEM (); + tvItem.hItem = lpht.hItem; + tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_STATEIMAGEMASK; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + int state = tvItem.state >> 12; + if ((state & 0x1) != 0) { + state++; + } else { + --state; + } + tvItem.state = state << 12; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + Event event = new Event (); + event.item = items [tvItem.lParam]; + event.detail = SWT.CHECK; + postEvent (SWT.Selection, event); + sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam); + if (OS.GetCapture () != handle) OS.SetCapture (handle); + return LRESULT.ZERO; + } + } + + /* Get the selected state of the item under the mouse */ + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + boolean hittestSelected = false; + if ((style & SWT.MULTI) != 0) { + tvItem.hItem = lpht.hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + hittestSelected = (tvItem.state & OS.TVIS_SELECTED) != 0; + } + + /* Get the selected state of the last selected item */ + int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if ((style & SWT.MULTI) != 0) { + tvItem.hItem = hOldItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + + /* Check for CONTROL or drag selection */ + if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) { + if (drawCount == 0) { + OS.UpdateWindow (handle); + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0); + } + } else { + deselectAll (); + } + } + + /* Do the selection */ + sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam); + dragStarted = false; + ignoreDeselect = ignoreSelect = true; + int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam); + ignoreDeselect = ignoreSelect = false; + if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle); + int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + + /* + * Feature in Windows. When the old and new focused item + * are the same, Windows does not check to make sure that + * the item is actually selected, not just focused. The + * fix is to force the item to draw selected by setting + * the state mask. This is only necessary when the tree + * is single select. + */ + if ((style & SWT.SINGLE) != 0) { + if (hOldItem == hNewItem) { + tvItem.mask = OS.TVIF_STATE; + tvItem.state = OS.TVIS_SELECTED; + tvItem.stateMask = OS.TVIS_SELECTED; + tvItem.hItem = hNewItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + + /* Reselect the last item that was unselected */ + if ((style & SWT.MULTI) != 0) { + + /* Check for CONTROL and reselect the last item */ + if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) { + if (hOldItem == hNewItem && hOldItem == lpht.hItem) { + if ((wParam & OS.MK_CONTROL) != 0) { + tvItem.state ^= OS.TVIS_SELECTED; + if (dragStarted) tvItem.state = OS.TVIS_SELECTED; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } else { + if ((tvItem.state & OS.TVIS_SELECTED) != 0) { + tvItem.state = OS.TVIS_SELECTED; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + if ((wParam & OS.MK_CONTROL) != 0 && !dragStarted) { + if (hittestSelected) { + tvItem.state = 0; + tvItem.hItem = lpht.hItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + } + if (drawCount == 0) { + RECT rect1 = new RECT (), rect2 = new RECT (); + rect1.left = hOldItem; rect2.left = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1); + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2); + /* + * This code is intentionally commented. + */ +// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0); + OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0); + if (OS.IsWinCE) { + OS.InvalidateRect (handle, rect1, false); + OS.InvalidateRect (handle, rect2, false); + OS.UpdateWindow (handle); + } else { + int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE; + OS.RedrawWindow (handle, rect1, 0, flags); + OS.RedrawWindow (handle, rect2, 0, flags); + } + } + } + + /* Check for SHIFT or normal select and delect/reselect items */ + if ((wParam & OS.MK_CONTROL) == 0) { + if (!hittestSelected || !dragStarted) { + tvItem.state = 0; + int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc); + for (int i=0; i<items.length; i++) { + TreeItem item = items [i]; + if (item != null && item.handle != hNewItem) { + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + } + } + tvItem.hItem = hNewItem; + tvItem.state = OS.TVIS_SELECTED; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc); + if ((wParam & OS.MK_SHIFT) != 0) { + RECT rect1 = new RECT (); + if (hAnchor == 0) hAnchor = hNewItem; + rect1.left = hAnchor; + if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1) != 0) { + RECT rect2 = rect2 = new RECT (); + rect2.left = hNewItem; + OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2); + int flags = rect1.top < rect2.top ? OS.TVGN_NEXTVISIBLE : OS.TVGN_PREVIOUSVISIBLE; + tvItem.state = OS.TVIS_SELECTED; + int hItem = tvItem.hItem = hAnchor; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + while (hItem != hNewItem) { + tvItem.hItem = hItem; + OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem); + hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hItem); + } + } + } + } + } + } + if ((wParam & OS.MK_SHIFT) == 0) hAnchor = hNewItem; + + /* Issue notification */ + tvItem.hItem = hNewItem; + tvItem.mask = OS.TVIF_PARAM; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + Event event = new Event (); + event.item = items [tvItem.lParam]; + postEvent (SWT.Selection, event); + + /* + * Feature in Windows. Inside WM_LBUTTONDOWN and WM_RBUTTONDOWN, + * the widget starts a modal loop to determine if the user wants + * to begin a drag/drop operation or marque select. Unfortunately, + * this modal loop eats the corresponding mouse up. The fix is to + * detect the cases when the modal loop has eaten the mouse up and + * issue a fake mouse up. + */ + if (dragStarted) { + postEvent (SWT.DragDetect); + } else { + sendMouseEvent (SWT.MouseUp, 1, OS.WM_LBUTTONUP, wParam, lParam); + } + dragStarted = false; + return new LRESULT (code); +} + +LRESULT WM_RBUTTONDOWN (int wParam, int lParam) { + /* + * Feature in Windows. The receiver uses WM_RBUTTONDOWN + * to initiate a drag/drop operation depending on how the + * user moves the mouse. If the user clicks the right button, + * without moving the mouse, the tree consumes the corresponding + * WM_RBUTTONUP. The fix is to avoid calling the window proc for + * the tree. + */ + sendMouseEvent (SWT.MouseDown, 3, OS.WM_RBUTTONDOWN, wParam, lParam); + /* + * This code is intentionally commented. + */ +// if (OS.GetCapture () != handle) OS.SetCapture (handle); + setFocus (); + + /* + * Feature in Windows. When the user selects a tree item + * with the right mouse button, the item remains selected + * only as long as the user does not release or move the + * mouse. As soon as this happens, the selection snaps + * back to the previous selection. This behavior can be + * observed in the Explorer but is not instantly apparent + * because the Explorer explicity sets the selection when + * the user chooses a menu item. If the user cancels the + * menu, the selection snaps back. The fix is to avoid + * calling the window proc and do the selection ourselves. + * This behavior is consistent with the table. + */ + TVHITTESTINFO lpht = new TVHITTESTINFO (); + lpht.x = (short) (lParam & 0xFFFF); + lpht.y = (short) (lParam >> 16); + OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht); + if (lpht.hItem != 0 && (lpht.flags & (OS.TVHT_ONITEMICON | OS.TVHT_ONITEMLABEL)) != 0) { + if ((wParam & (OS.MK_CONTROL | OS.MK_SHIFT)) == 0) { + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.stateMask = OS.TVIS_SELECTED; + tvItem.hItem = lpht.hItem; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) == 0) { + ignoreSelect = true; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, 0); + ignoreSelect = false; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, lpht.hItem); + } + } + } + return LRESULT.ZERO; +} + +LRESULT WM_SETFOCUS (int wParam, int lParam) { + LRESULT result = super.WM_SETFOCUS (wParam, lParam); + if ((style & SWT.SINGLE) != 0) return result; + /* + * Feature in Windows. When multiple item have + * the TVIS_SELECTED state, Windows redraws only + * the focused item in the color used to show the + * selection when the tree loses or gains focus. + * The fix is to force Windows to redraw all the + * visible items when focus is gained or lost. + */ + OS.InvalidateRect (handle, null, false); + return result; +} + +LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) { + LRESULT result = super.WM_SYSCOLORCHANGE (wParam, lParam); + if (result != null) return result; + if ((style & SWT.CHECK) != 0) setCheckboxImageList (); + return result; +} + +LRESULT wmNotifyChild (int wParam, int lParam) { + NMHDR hdr = new NMHDR (); + OS.MoveMemory (hdr, lParam, NMHDR.sizeof); + int code = hdr.code; + switch (code) { + case OS.NM_CUSTOMDRAW: { + if (!customDraw) break; + NMTVCUSTOMDRAW nmcd = new NMTVCUSTOMDRAW (); + OS.MoveMemory (nmcd, lParam, NMTVCUSTOMDRAW.sizeof); + switch (nmcd.dwDrawStage) { + case OS.CDDS_PREPAINT: return new LRESULT (OS.CDRF_NOTIFYITEMDRAW); + case OS.CDDS_ITEMPREPAINT: + TreeItem item = items [nmcd.lItemlParam]; + /* + * Feature on Windows. When a new tree item is inserted + * using TVM_INSERTITEM and the tree is using custom draw, + * a NM_CUSTOMDRAW is sent before TVM_INSERTITEM returns + * and before the item is added to the items array. The + * fix is to check for null. + * + * NOTE: This only happens on XP with the version 6.00 of + * COMCTL32.DLL, + */ + if (item == null) break; + TVITEM tvItem = new TVITEM (); + tvItem.mask = OS.TVIF_STATE; + tvItem.hItem = item.handle; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + if ((tvItem.state & OS.TVIS_SELECTED) != 0) break; + int clrText = item.foreground, clrTextBk = item.background; + if (clrText == -1 && clrTextBk == -1) break; + nmcd.clrText = clrText == -1 ? getForegroundPixel () : clrText; + nmcd.clrTextBk = clrTextBk == -1 ? getBackgroundPixel () : clrTextBk; + OS.MoveMemory (lParam, nmcd, NMTVCUSTOMDRAW.sizeof); + return new LRESULT (OS.CDRF_NEWFONT); + } + break; + } + case OS.NM_DBLCLK: + int pos = OS.GetMessagePos (); + TVHITTESTINFO lpht = new TVHITTESTINFO (); + POINT pt = new POINT (); + pt.x = (short) (pos & 0xFFFF); + pt.y = (short) (pos >> 16); + OS.ScreenToClient (handle, pt); + lpht.x = pt.x; lpht.y = pt.y; + OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht); + if ((lpht.flags & OS.TVHT_ONITEM) == 0) break; + // FALL THROUGH + case OS.NM_RETURN: + case OS.TVN_SELCHANGEDA: + case OS.TVN_SELCHANGEDW: + if (!ignoreSelect) { + TVITEM tvItem = null; + if (code == OS.TVN_SELCHANGED) { + tvItem = new TVITEM (); + int offset = NMHDR.sizeof + 4 + TVITEM.sizeof; + OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof); + hAnchor = tvItem.hItem; + } else { + int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0); + if (hItem != 0) { + tvItem = new TVITEM (); + tvItem.hItem = hItem; + tvItem.mask = OS.TVIF_PARAM; + OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem); + } + } + Event event = new Event (); + if (tvItem != null) { + event.item = items [tvItem.lParam]; + } + if (code == OS.TVN_SELCHANGED) { + postEvent (SWT.Selection, event); + } else { + postEvent (SWT.DefaultSelection, event); + } + } + if (code == OS.NM_DBLCLK && hooks (SWT.DefaultSelection)) { + return LRESULT.ONE; + } + break; + case OS.TVN_SELCHANGINGA: + case OS.TVN_SELCHANGINGW: + if (!ignoreSelect && !ignoreDeselect) { + hAnchor = 0; + if ((style & SWT.MULTI) != 0) deselectAll (); + } + break; + case OS.TVN_ITEMEXPANDINGA: + case OS.TVN_ITEMEXPANDINGW: + if (!ignoreExpand) { + TVITEM tvItem = new TVITEM (); + int offset = NMHDR.sizeof + 4 + TVITEM.sizeof; + OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof); + int [] action = new int [1]; + OS.MoveMemory (action, lParam + NMHDR.sizeof, 4); + Event event = new Event (); + event.item = items [tvItem.lParam]; + /* + * It is possible (but unlikely), that application + * code could have disposed the widget in the expand + * or collapse event. If this happens, end the + * processing of the Windows message by returning + * zero as the result of the window proc. + */ + if (action [0] == OS.TVE_EXPAND) { + sendEvent (SWT.Expand, event); + if (isDisposed ()) return LRESULT.ZERO; + } + if (action [0] == OS.TVE_COLLAPSE) { + sendEvent (SWT.Collapse, event); + if (isDisposed ()) return LRESULT.ZERO; + } + } + break; + case OS.TVN_BEGINDRAGA: + case OS.TVN_BEGINDRAGW: + case OS.TVN_BEGINRDRAGA: + case OS.TVN_BEGINRDRAGW: + TVITEM tvItem = new TVITEM (); + int offset = NMHDR.sizeof + 4 + TVITEM.sizeof; + OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof); + if (tvItem.hItem != 0 && (tvItem.state & OS.TVIS_SELECTED) == 0) { + ignoreSelect = ignoreDeselect = true; + OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, tvItem.hItem); + ignoreSelect = ignoreDeselect = false; + } + dragStarted = true; + break; + } + return super.wmNotifyChild (wParam, lParam); +} + +} |