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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Combo.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Combo.java | 1726 |
1 files changed, 1726 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Combo.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Combo.java new file mode 100755 index 0000000000..8ad4709e7a --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Combo.java @@ -0,0 +1,1726 @@ +/******************************************************************************* + * Copyright (c) 2000, 2009 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.widgets; + + +import org.eclipse.swt.internal.*; +import org.eclipse.swt.internal.motif.*; +import org.eclipse.swt.*; +import org.eclipse.swt.graphics.*; +import org.eclipse.swt.events.*; + +/** + * Instances of this class are controls that allow the user + * to choose an item from a list of items, or optionally + * enter a new value by typing it into an editable text + * field. Often, <code>Combo</code>s are used in the same place + * where a single selection <code>List</code> widget could + * be used but space is limited. A <code>Combo</code> takes + * less space than a <code>List</code> widget and shows + * similar information. + * <p> + * Note: Since <code>Combo</code>s can contain both a list + * and an editable text field, it is possible to confuse methods + * which access one versus the other (compare for example, + * <code>clearSelection()</code> and <code>deselectAll()</code>). + * The API documentation is careful to indicate either "the + * receiver's list" or the "the receiver's text field" to + * distinguish between the two cases. + * </p><p> + * Note that although this class is a subclass of <code>Composite</code>, + * it does not make sense to add children to it, or set a layout on it. + * </p> + * <dl> + * <dt><b>Styles:</b></dt> + * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd> + * <dt><b>Events:</b></dt> + * <dd>DefaultSelection, Modify, Selection, Verify</dd> + * </dl> + * <p> + * Note: Only one of the styles DROP_DOWN and SIMPLE may be specified. + * </p><p> + * IMPORTANT: This class is <em>not</em> intended to be subclassed. + * </p> + * + * @see List + * @see <a href="http://www.eclipse.org/swt/snippets/#combo">Combo snippets</a> + * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> + * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> + * @noextend This class is not intended to be subclassed by clients. + */ +public class Combo extends Composite { + int visibleCount = 5; + + /** + * the operating system limit for the number of characters + * that the text field in an instance of this class can hold + */ + public static final int LIMIT; + + /* + * These values can be different on different platforms. + * Therefore they are not initialized in the declaration + * to stop the compiler from inlining. + */ + static { + LIMIT = 0x7FFFFFFF; + } + + boolean ignoreSelect; +/** + * 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#DROP_DOWN + * @see SWT#READ_ONLY + * @see SWT#SIMPLE + * @see Widget#checkSubclass + * @see Widget#getStyle + */ +public Combo (Composite parent, int style) { + super (parent, checkStyle (style)); +} +/** + * Adds the argument to the end of the receiver's list. + * + * @param string the new item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string 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 #add(String,int) + */ +public void add (String string) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + + byte [] buffer = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED); + OS.XmComboBoxAddItem(handle, xmString, -1, false); + OS.XmStringFree (xmString); +} +/** + * Adds the argument to the receiver's list at the given + * zero-relative index. + * <p> + * Note: To add an item at the end of the list, use the + * result of calling <code>getItemCount()</code> as the + * index or use <code>add(String)</code>. + * </p> + * + * @param string the new item + * @param index the index for the item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (inclusive)</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 #add(String) + */ +public void add (String string, int index) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + if (index == -1) error (SWT.ERROR_INVALID_RANGE); + + /* + * Feature in Motif. When an index is out of range, + * the list widget adds the item at the end. This + * behavior is not wrong but it is unwanted. The + * fix is to check the range before adding the item. + */ + int [] argList = {OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= index && index <= argList [1])) { + error (SWT.ERROR_INVALID_RANGE); + } + byte [] buffer = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED); + OS.XmComboBoxAddItem(handle, xmString, index + 1, false); + OS.XmStringFree (xmString); +} +/** + * Adds the listener to the collection of listeners who will + * be notified when the receiver's text is modified, by sending + * it one of the messages defined in the <code>ModifyListener</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 ModifyListener + * @see #removeModifyListener + */ +public void addModifyListener (ModifyListener listener) { + checkWidget(); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + TypedListener typedListener = new TypedListener (listener); + addListener (SWT.Modify, typedListener); +} +/** + * Adds the listener to the collection of listeners who will + * be notified when the user changes the receiver's selection, by sending + * it one of the messages defined in the <code>SelectionListener</code> + * interface. + * <p> + * <code>widgetSelected</code> is called when the user changes the combo's list selection. + * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. + * </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 the receiver's text is verified, by sending + * it one of the messages defined in the <code>VerifyListener</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 VerifyListener + * @see #removeVerifyListener + * + * @since 3.1 + */ +public void addVerifyListener (VerifyListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + TypedListener typedListener = new TypedListener (listener); + addListener (SWT.Verify, typedListener); +} +static int checkStyle (int style) { + /* + * Feature in Windows. It is not possible to create + * a combo box that has a border using Windows style + * bits. All combo boxes draw their own border and + * do not use the standard Windows border styles. + * Therefore, no matter what style bits are specified, + * clear the BORDER bits so that the SWT style will + * match the Windows widget. + * + * The Windows behavior is currently implemented on + * all platforms. + */ + style &= ~SWT.BORDER; + + /* + * Even though it is legal to create this widget + * with scroll bars, they serve no useful purpose + * because they do not automatically scroll the + * widget's client area. The fix is to clear + * the SWT style. + */ + style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); + style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0); + if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY; + return style; +} +protected void checkSubclass () { + if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); +} +/** + * Sets the selection in the receiver's text field to an empty + * selection starting just before the first character. If the + * text field is editable, this has the effect of placing the + * i-beam at the start of the text. + * <p> + * Note: To clear the selected items in the receiver's list, + * use <code>deselectAll()</code>. + * </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> + * + * @see #deselectAll + */ +public void clearSelection () { + checkWidget(); + int xDisplay = OS.XtDisplay (handle); + if (xDisplay == 0) return; + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextClearSelection (argList[1], OS.XtLastTimestampProcessed (xDisplay)); +} + +public Point computeSize (int wHint, int hHint, boolean changed) { + checkWidget(); + int [] argList = { + OS.XmNlist, 0, + OS.XmNtextField, 0, + OS.XmNitemCount, 0, + OS.XmNmarginWidth, 0, + OS.XmNshadowThickness, 0, + OS.XmNhighlightThickness, 0, + OS.XmNarrowSize, 0, + OS.XmNarrowSpacing, 0, + }; + OS.XtGetValues(handle, argList, argList.length / 2); + XtWidgetGeometry result = new XtWidgetGeometry (); + result.request_mode = OS.CWWidth; + OS.XtQueryGeometry (argList[1], null, result); + int width = result.width, height = getTextHeight(); + int[] argList2 = {OS.XmNmarginWidth, 0, OS.XmNshadowThickness, 0}; + OS.XtGetValues(argList[3], argList2, argList2.length / 2); + if ((style & SWT.READ_ONLY) == 0) width += (2 * argList[7]); + if ((style & SWT.DROP_DOWN) != 0) { + width += argList[13] + argList[15]; + } else { + int itemCount = (argList[5] == 0) ? 5 : argList[5]; + height += (getItemHeight () * itemCount); + } + width += (2 * argList[9]) + + (2 * argList[11]) + + (2 * argList2[1]) + + (2 * argList2[3]); + if (argList[5] == 0) width = DEFAULT_WIDTH; + if (hHint != SWT.DEFAULT) height = hHint; + if (wHint != SWT.DEFAULT) width = wHint; + Rectangle rect = computeTrim (0, 0, width, height); + return new Point (rect.width, rect.height); +} +/** + * Copies the selected text. + * <p> + * The current selection is copied to the clipboard. + * </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> + * + * @since 2.1 + */ +public void copy () { + checkWidget(); + int xDisplay = OS.XtDisplay (handle); + if (xDisplay == 0) return; + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextCopy (argList [1], OS.XtLastTimestampProcessed (xDisplay)); +} +void createHandle (int index) { + /* + * Feature in Motif. When items are added or removed + * from a combo, it may request and be granted, a new + * preferred size. This behavior is unwanted. The fix + * is to create a parent for the list that will disallow + * geometry requests. + */ + int parentHandle = parent.handle; + int [] argList1 = {OS.XmNancestorSensitive, 1}; + formHandle = OS.XmCreateForm (parentHandle, null, argList1, argList1.length / 2); + if (formHandle == 0) error (SWT.ERROR_NO_HANDLES); + int comboBoxType = OS.XmDROP_DOWN_COMBO_BOX; + if ((style & SWT.SIMPLE) != 0) { + comboBoxType = OS.XmCOMBO_BOX; + } else if ((style & SWT.READ_ONLY) != 0) { + comboBoxType = OS.XmDROP_DOWN_LIST; + } + int [] argList2 = { + OS.XmNcomboBoxType, comboBoxType, + OS.XmNtopAttachment, OS.XmATTACH_FORM, + OS.XmNbottomAttachment, OS.XmATTACH_FORM, + OS.XmNleftAttachment, OS.XmATTACH_FORM, + OS.XmNrightAttachment, OS.XmATTACH_FORM, + OS.XmNresizable, 0, + }; + handle = OS.XmCreateComboBox (formHandle, null, argList2, argList2.length / 2); + if (handle == 0) error (SWT.ERROR_NO_HANDLES); + int [] argList3 = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList3, argList3.length / 2); + int textHandle = argList3 [1]; + int [] argList4 = {OS.XmNverifyBell, 0}; + OS.XtSetValues (textHandle, argList4, argList4.length / 2); + /* + * Feature in Motif. The Combo widget is created with a default + * drop target. This is inconsistent with other platforms. + * To be consistent, disable the default drop target. + */ + OS.XmDropSiteUnregister (textHandle); +} +/** + * Cuts the selected text. + * <p> + * The current selection is first copied to the + * clipboard and then deleted from the widget. + * </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> + * + * @since 2.1 + */ +public void cut () { + checkWidget(); + int xDisplay = OS.XtDisplay (handle); + if (xDisplay == 0) return; + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextCut (argList [1], OS.XtLastTimestampProcessed (xDisplay)); +} +/** + * Deselects the item at the given zero-relative index in the receiver's + * list. If the item at the index was already deselected, it remains + * deselected. Indices that are out of range are ignored. + * + * @param index the index of the item to deselect + * + * @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 deselect (int index) { + checkWidget(); + if (index == -1) return; + int [] argList = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + + if (OS.XmListPosSelected (argList[3], index + 1)) { + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList[1], new byte[1]); + display.setWarnings (warnings); + OS.XmListDeselectAllItems (argList[3]); + } +} +/** + * Deselects all selected items in the receiver's list. + * <p> + * Note: To clear the selection in the receiver's text field, + * use <code>clearSelection()</code>. + * </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> + * + * @see #clearSelection + */ +public void deselectAll () { + checkWidget(); + int [] argList = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList[1], new byte[1]); + display.setWarnings(warnings); + OS.XmListDeselectAllItems (argList[3]); +} +/** + * Returns the item at the given, zero-relative index in the + * receiver's list. Throws an exception if the index is out + * of range. + * + * @param index the index of the item to return + * @return the item at the given index + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 String getItem (int index) { + checkWidget(); + int [] argList = {OS.XmNitemCount, 0, OS.XmNitems, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= index && index < argList [1])) { + error (SWT.ERROR_INVALID_RANGE); + } + if (argList [3] == 0) error (SWT.ERROR_CANNOT_GET_ITEM); + int ptr = argList [3] + (index * 4); + int [] buffer1 = new int [1]; + OS.memmove (buffer1, ptr, 4); + ptr = buffer1 [0]; + int [] table = new int [] {display.tabMapping, display.crMapping}; + int address = OS.XmStringUnparse ( + ptr, + null, + OS.XmCHARSET_TEXT, + OS.XmCHARSET_TEXT, + table, + table.length, + OS.XmOUTPUT_ALL); + if (address == 0) error (SWT.ERROR_CANNOT_GET_ITEM); + int length = OS.strlen (address); + byte [] buffer = new byte [length]; + OS.memmove (buffer, address, length); + OS.XtFree (address); + return decodeString(new String (Converter.mbcsToWcs (getCodePage (), buffer))); +} +/** + * Returns the number of items contained in the receiver's list. + * + * @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 [] argList = {OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + return argList [1]; +} +/** + * Returns the height of the area which would be used to + * display <em>one</em> of the items in the receiver's list. + * + * @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(); + int [] listHandleArgs = {OS.XmNlist, 0}; + OS.XtGetValues (handle, listHandleArgs, listHandleArgs.length / 2); + int [] argList = {OS.XmNlistSpacing, 0, OS.XmNhighlightThickness, 0, OS.XmNfontList, 0}; + OS.XtGetValues (listHandleArgs[1], argList, argList.length / 2); + int spacing = argList [1], highlight = argList [3], fontList = argList [5]; + /* Result is from empirical analysis on Linux and AIX */ + return getFontHeight (fontList) + spacing + (2 * highlight); +} +/** + * Returns a (possibly empty) array of <code>String</code>s which are + * the items in the receiver's list. + * <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 items in the receiver's list + * + * @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 String [] getItems () { + checkWidget(); + int [] argList = {OS.XmNitems, 0, OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int items = argList [1], itemCount = argList [3]; + int [] buffer1 = new int [1]; + String [] result = new String [itemCount]; + String codePage = getCodePage (); + for (int i = 0; i < itemCount; i++) { + OS.memmove (buffer1, items, 4); + int ptr = buffer1 [0]; + int [] table = new int [] {display.tabMapping, display.crMapping}; + int address = OS.XmStringUnparse ( + ptr, + null, + OS.XmCHARSET_TEXT, + OS.XmCHARSET_TEXT, + table, + table.length, + OS.XmOUTPUT_ALL); + if (address == 0) error (SWT.ERROR_CANNOT_GET_ITEM); + int length = OS.strlen (address); + byte [] buffer = new byte [length]; + OS.memmove (buffer, address, length); + OS.XtFree (address); + result[i] = decodeString(new String (Converter.mbcsToWcs (codePage, buffer))); + items += 4; + } + return result; +} +/** + * Returns <code>true</code> if the receiver's list is visible, + * and <code>false</code> otherwise. + * <p> + * If one of the receiver's ancestors is not visible or some + * other condition makes the receiver not visible, this method + * may still indicate that it is considered visible even though + * it may not actually be showing. + * </p> + * + * @return the receiver's list's visibility state + * + * @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 3.4 + */ +public boolean getListVisible () { + checkWidget (); + int[] argList1 = new int[] {OS.XmNlist, 0, OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + int xtParent = OS.XtParent (argList1 [1]); + while (xtParent != 0 && !OS.XtIsSubclass (xtParent, OS.shellWidgetClass ())) { + xtParent = OS.XtParent (xtParent); + } + if (xtParent != 0) { + int xDisplay = OS.XtDisplay (xtParent); + if (xDisplay == 0) return false; + int xWindow = OS.XtWindow (xtParent); + if (xWindow == 0) return false; + XWindowAttributes attributes = new XWindowAttributes (); + OS.XGetWindowAttributes (xDisplay, xWindow, attributes); + return attributes.map_state == OS.IsViewable; + } + return false; +} +int getMinimumHeight () { + return getTextHeight (); +} +String getNameText () { + return getText (); +} +/** + * Returns the orientation of the receiver. + * + * @return the orientation style + * + * @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 2.1.2 + */ +public int getOrientation () { + checkWidget(); + return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); +} +/** + * Returns a <code>Point</code> whose x coordinate is the + * character position representing the start of the selection + * in the receiver's text field, and whose y coordinate is the + * character position representing the end of the selection. + * An "empty" selection is indicated by the x and y coordinates + * having the same value. + * <p> + * Indexing is zero based. The range of a selection is from + * 0..N where N is the number of characters in the widget. + * </p> + * + * @return a point representing the selection start and end + * + * @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 Point getSelection () { + checkWidget(); + int [] start = new int [1], end = new int [1]; + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextGetSelectionPosition (argList[1], start, end); + if (start [0] == end [0]) { + start [0] = end [0] = OS.XmTextGetInsertionPosition (argList[1]); + } + return new Point (start [0], end [0]); +} +/** + * Returns the zero-relative index of the item which is currently + * selected in the receiver's list, or -1 if no item is selected. + * + * @return the index of the selected 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 getSelectionIndex () { + checkWidget(); + int [] argList = {OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + + int index = OS.XmListGetKbdItemPos (argList[1]); + if (OS.XmListPosSelected (argList[1], index)) return index - 1; + int [] count = new int [1], positions = new int [1]; + if (!OS.XmListGetSelectedPos (argList[1], positions, count)) return -1; + if (count [0] == 0) return -1; + int address = positions [0]; + int [] indices = new int [1]; + OS.memmove (indices, address, 4); + OS.XtFree (address); + return indices [0] - 1; +} +/** + * Returns a string containing a copy of the contents of the + * receiver's text field, or an empty string if there are no + * contents. + * + * @return the receiver's text + * + * @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 String getText () { + checkWidget(); + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + + int ptr = OS.XmTextGetString (argList[1]); + if (ptr == 0) return ""; + int length = OS.strlen (ptr); + byte [] buffer = new byte [length]; + OS.memmove (buffer, ptr, length); + OS.XtFree (ptr); + return decodeString(new String (Converter.mbcsToWcs (getCodePage (), buffer))); +} +/** + * Returns the height of the receivers's text field. + * + * @return the text height + * + * @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 getTextHeight () { + checkWidget(); + if ((style & SWT.DROP_DOWN) != 0) { + /* + * Bug in MOTIF. For some reason, XtQueryGeometry () + * returns the wrong height when the combo is not realized. + * The fix is to force the combo to be realized by forcing + * the shell to be realized. + */ + if (!OS.XtIsRealized (handle)) getShell ().realizeWidget (); + XtWidgetGeometry result = new XtWidgetGeometry (); + result.request_mode = OS.CWHeight; + OS.XtQueryGeometry (handle, null, result); + return result.height; + } else { + /* Calculate text field height. */ + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int [] argList2 = {OS.XmNmarginHeight, 0}; + OS.XtGetValues (argList[1], argList2, argList2.length / 2); + int height = getFontHeight (font.handle); + XRectangle rect = new XRectangle (); + OS.XmWidgetGetDisplayRect (argList[1], rect); + height += (rect.y * 2) + (2 * argList2[1]); + + /* Add in combo box margins. */ + int [] argList3 = {OS.XmNmarginHeight, 0, OS.XmNshadowThickness, 0, OS.XmNhighlightThickness, 0}; + OS.XtGetValues(handle, argList3, argList3.length / 2); + height += (2 * argList3[1]) + (2 * argList3[3]) + (2 * argList3[5]); + + return height; + } +} +/** + * Returns the maximum number of characters that the receiver's + * text field is capable of holding. If this has not been changed + * by <code>setTextLimit()</code>, it will be the constant + * <code>Combo.LIMIT</code>. + * + * @return the text limit + * + * @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 #LIMIT + */ +public int getTextLimit () { + checkWidget(); + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + return OS.XmTextGetMaxLength (argList[1]); +} +/** + * Gets the number of items that are visible in the drop + * down portion of the receiver's list. + * <p> + * Note: This operation is a hint and is not supported on + * platforms that do not have this concept. + * </p> + * + * @return the number of items that are 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> + * + * @since 3.0 + */ +public int getVisibleItemCount () { + checkWidget (); + if ((style & SWT.SIMPLE) != 0) return visibleCount; + int [] argList = new int [] {OS.XmNvisibleItemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + return argList [1]; +} +void hookEvents () { + super.hookEvents (); + int windowProc = display.windowProc; + int [] argList = {OS.XmNlist, 0, OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int listHandle = argList [1]; + int textHandle = argList [3]; + OS.XtAddCallback (listHandle, OS.XmNbrowseSelectionCallback, windowProc, BROWSE_SELECTION_CALLBACK); + OS.XtAddEventHandler (listHandle, OS.KeyPressMask, false, windowProc, KEY_PRESS); + OS.XtAddEventHandler (listHandle, OS.KeyReleaseMask, false, windowProc, KEY_RELEASE); + OS.XtAddCallback (textHandle, OS.XmNactivateCallback, windowProc, ACTIVATE_CALLBACK); + OS.XtAddCallback (textHandle, OS.XmNvalueChangedCallback, windowProc, VALUE_CHANGED_CALLBACK); + OS.XtAddCallback (textHandle, OS.XmNmodifyVerifyCallback, windowProc, MODIFY_VERIFY_CALLBACK); + OS.XtAddEventHandler (textHandle, OS.ButtonPressMask, false, windowProc, BUTTON_PRESS); + OS.XtAddEventHandler (textHandle, OS.ButtonReleaseMask, false, windowProc, BUTTON_RELEASE); + OS.XtAddEventHandler (textHandle, OS.EnterWindowMask, false, windowProc, ENTER_WINDOW); + OS.XtAddEventHandler (textHandle, OS.LeaveWindowMask, false, windowProc, LEAVE_WINDOW); + OS.XtAddEventHandler (textHandle, OS.KeyPressMask, false, windowProc, KEY_PRESS); + OS.XtAddEventHandler (textHandle, OS.KeyReleaseMask, false, windowProc, KEY_RELEASE); + OS.XtInsertEventHandler (textHandle, OS.FocusChangeMask, false, windowProc, FOCUS_CHANGE, OS.XtListTail); +} +/** + * Searches the receiver's list starting at the first item + * (index 0) until an item is found that is equal to the + * argument, and returns the index of that item. If no item + * is found, returns -1. + * + * @param string the search item + * @return the index of the item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string 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 int indexOf (String string) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + + byte [] buffer = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) return -1; + + int [] argList = {OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + + int index = OS.XmListItemPos (argList[1], xmString); + OS.XmStringFree (xmString); + return index - 1; +} +/** + * Searches the receiver's list starting at the given, + * zero-relative index until an item is found that is equal + * to the argument, and returns the index of that item. If + * no item is found or the starting index is out of range, + * returns -1. + * + * @param string the search item + * @param start the zero-relative index at which to begin the search + * @return the index of the item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string 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 int indexOf (String string, int start) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + int [] argList = {OS.XmNitems, 0, OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int items = argList [1], itemCount = argList [3]; + if (!((0 <= start) && (start < itemCount))) return -1; + byte [] buffer1 = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer1); + if (xmString == 0) return -1; + int index = start; + items += start * 4; + int [] buffer2 = new int [1]; + while (index < itemCount) { + OS.memmove (buffer2, items, 4); + if (OS.XmStringCompare (buffer2 [0], xmString)) break; + items += 4; index++; + } + OS.XmStringFree (xmString); + if (index == itemCount) return -1; + return index; +} +/** + * Pastes text from clipboard. + * <p> + * The selected text is deleted from the widget + * and new text inserted from the clipboard. + * </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> + * + * @since 2.1 + */ +public void paste () { + checkWidget(); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextFieldPaste (argList [1]); + display.setWarnings (warnings); +} +/** + * Removes the item from the receiver's list at the given + * zero-relative index. + * + * @param index the index for the item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 remove (int index) { + checkWidget(); + if (index == -1) error (SWT.ERROR_INVALID_RANGE); + /* + * Feature in Motif. An index out of range is handled + * correctly by the list widget but causes an unwanted + * Xm Warning. The fix is to check the range before + * deleting an item. + */ + int [] argList = {OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= index && index < argList [1])) { + error (SWT.ERROR_INVALID_RANGE); + } + if (argList [1] == 1) { + removeAll (); + } else { + OS.XmComboBoxDeletePos (handle, index + 1); + } +} +/** + * Removes the items from the receiver's list which are + * between the given zero-relative start and end + * indices (inclusive). + * + * @param start the start of the range + * @param end the end of the range + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_RANGE - if either the start or end are not between 0 and the number of elements in the list minus 1 (inclusive)</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 remove (int start, int end) { + checkWidget(); + if (start > end) return; + int [] argList = {OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= start && start <= end && end < argList [1])) { + error (SWT.ERROR_INVALID_RANGE); + } + if (argList [1] == (end - start + 1)) { + removeAll (); + } else { + for (int i = start; i <= end; i++) { + OS.XmComboBoxDeletePos (handle, start + 1); + } + } +} +void register () { + super.register (); + int [] argList = {OS.XmNlist, 0, OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + display.addWidget (argList[1], this); + display.addWidget (argList[3], this); +} +void releaseWidget () { + super.releaseWidget (); + if (display.focusedCombo == this) display.focusedCombo = null; + /* + * Bug in Motif. Disposing a Combo while its list is visible + * causes Motif to crash. The fix is to hide the drop down + * list before disposing the Combo. + */ + if ((style & SWT.DROP_DOWN) != 0) { + int[] argList = new int[] {OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int xtParent = OS.XtParent (argList [1]); + while (xtParent != 0 && !OS.XtIsSubclass (xtParent, OS.shellWidgetClass ())) { + xtParent = OS.XtParent (xtParent); + } + if (xtParent != 0) OS.XtPopdown (xtParent); + } +} +/** + * Searches the receiver's list starting at the first item + * until an item is found that is equal to the argument, + * and removes that item from the list. + * + * @param string the item to remove + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</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 remove (String string) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + byte [] buffer = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) error (SWT.ERROR_ITEM_NOT_REMOVED); + int [] argList = {OS.XmNlist, 0, OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int index = OS.XmListItemPos (argList[1], xmString); + OS.XmStringFree (xmString); + if (index == 0) error (SWT.ERROR_INVALID_ARGUMENT); + if (argList [3] == 1) { + removeAll (); + } else { + OS.XmComboBoxDeletePos (handle, index); + } +} +/** + * Removes all of the items from the receiver's list and clear the + * contents of receiver's text field. + * <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(); + int [] argList = {OS.XmNtextField, 0, OS.XmNlist, 0, OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList[1], new byte[1]); + display.setWarnings(warnings); + OS.XmListDeselectAllItems (argList[3]); + for (int i = 0; i < argList[5]; i++) { + OS.XmComboBoxDeletePos(handle, 1); + } +} +/** + * Removes the listener from the collection of listeners who will + * be notified when the receiver's text is modified. + * + * @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 ModifyListener + * @see #addModifyListener + */ +public void removeModifyListener (ModifyListener listener) { + checkWidget(); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + if (eventTable == null) return; + eventTable.unhook (SWT.Modify, listener); +} +/** + * Removes the listener from the collection of listeners who will + * be notified when the user changes the receiver's selection. + * + * @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); + if (eventTable == null) return; + eventTable.unhook (SWT.Selection, listener); + eventTable.unhook (SWT.DefaultSelection,listener); +} +/** + * Removes the listener from the collection of listeners who will + * be notified when the control is verified. + * + * @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 VerifyListener + * @see #addVerifyListener + * + * @since 3.1 + */ +public void removeVerifyListener (VerifyListener listener) { + checkWidget (); + if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); + if (eventTable == null) return; + eventTable.unhook (SWT.Verify, listener); +} +/** + * Selects the item at the given zero-relative index in the receiver's + * list. If the item at the index was already selected, it remains + * selected. Indices that are out of range are ignored. + * + * @param index the index of the item to select + * + * @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 select (int index) { + checkWidget(); + if (index == -1) { + int [] argList = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList[1], new byte[1]); + display.setWarnings (warnings); + OS.XmListDeselectAllItems (argList[3]); + } else { + int [] argList = {OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= index && index < argList [1])) return; + int [] argList2 = {OS.XmNselectedPosition, index}; + ignoreSelect = true; + OS.XtSetValues(handle, argList2, argList2.length / 2); + ignoreSelect = false; + } +} +void sendFocusEvent (int type) { + Display display = this.display; + Control focusedCombo = display.focusedCombo; + if (type == SWT.FocusIn && focusedCombo != this) { + super.sendFocusEvent (type); + if (!isDisposed ()) display.focusedCombo = this; + } +} +boolean sendIMKeyEvent (int type, XKeyEvent xEvent) { + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + return super.sendIMKeyEvent (type, xEvent, argList [1]); +} +void setBackgroundPixel (int pixel) { + super.setBackgroundPixel (pixel); + int [] argList1 = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + int text = argList1 [1], list = argList1 [3]; + int [] argList2 = {OS.XmNforeground, 0, OS.XmNhighlightColor, 0}; + OS.XtGetValues (text, argList2, argList2.length / 2); + OS.XmChangeColor (text, pixel); + OS.XtSetValues (text, argList2, argList2.length / 2); + int [] argList3 = {OS.XmNforeground, 0, OS.XmNhighlightColor, 0}; + OS.XtGetValues (list, argList3, argList3.length / 2); + OS.XmChangeColor (list, pixel); + OS.XtSetValues (list, argList3, argList3.length / 2); +} +boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { + checkWidget(); + int newHeight = (resize && (style & SWT.DROP_DOWN) != 0) ? getTextHeight() : height; + return super.setBounds (x, y, width, newHeight, move, resize); +} +public void setFont (Font font) { + checkWidget(); + + /* + * Bug in Motif. Setting the font in a combo widget that does + * not have any items causes a GP on UTF-8 locale. + * The fix is to add an item, change the font, then + * remove the added item at the end. + */ + int [] argList1 = {OS.XmNitems, 0, OS.XmNitemCount, 0,}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + boolean fixString = OS.IsDBLocale && argList1 [3] == 0; + if (fixString) { + byte [] buffer = Converter.wcsToMbcs (getCodePage (), "string", true); + int xmString = OS.XmStringCreateLocalized (buffer); + OS.XmComboBoxAddItem (handle, xmString, -1, false); + OS.XmStringFree (xmString); + } + super.setFont (font); + if (fixString) OS.XtSetValues (handle, argList1, argList1.length / 2); + + /* + * Bug in Motif. When a font is set in a combo box after the widget + * is realized, the combo box does not lay out properly. For example, + * the drop down arrow may be positioned in the middle of the text + * field or may be invisible, positioned outside the bounds of the + * widget. The fix is to detect these cases and force the combo box + * to be laid out properly by temporarily growing and then shrinking + * the widget. + * + * NOTE: This problem also occurs for simple combo boxes. + */ + if (OS.XtIsRealized (handle)) { + int [] argList2 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0}; + OS.XtGetValues (handle, argList2, argList2.length / 2); + OS.XtResizeWidget (handle, argList2 [1], argList2 [3] + 1, argList2 [5]); + OS.XtResizeWidget (handle, argList2 [1], argList2 [3], argList2 [5]); + } +} +void setForegroundPixel (int pixel) { + int [] argList1 = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + int [] argList2 = {OS.XmNforeground, pixel}; + OS.XtSetValues (argList1 [1], argList2, argList2.length / 2); + OS.XtSetValues (argList1 [3], argList2, argList2.length / 2); + super.setForegroundPixel (pixel); +} +/** + * Sets the text of the item in the receiver's list at the given + * zero-relative index to the string argument. + * + * @param index the index for the item + * @param string the new text for the item + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> + * <li>ERROR_NULL_ARGUMENT - if the string 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 void setItem (int index, String string) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + if (index == -1) error (SWT.ERROR_INVALID_RANGE); + int [] argList = {OS.XmNlist, 0, OS.XmNitemCount, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + if (!(0 <= index && index < argList [3])) { + error (SWT.ERROR_INVALID_RANGE); + } + byte [] buffer = Converter.wcsToMbcs (getCodePage (), encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) error (SWT.ERROR_ITEM_NOT_ADDED); + boolean isSelected = OS.XmListPosSelected (argList[1], index + 1); + OS.XmListReplaceItemsPosUnselected (argList[1], new int [] {xmString}, 1, index + 1); + if (isSelected) OS.XmListSelectPos (argList[1], index + 1, false); + OS.XmStringFree (xmString); +} +/** + * Sets the receiver's list to be the given array of items. + * + * @param items the array of items + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the items array is null</li> + * <li>ERROR_INVALID_ARGUMENT - if an item in the items array 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 void setItems (String [] items) { + checkWidget(); + if (items == null) error (SWT.ERROR_NULL_ARGUMENT); + for (int i=0; i<items.length; i++) { + if (items [i] == null) error (SWT.ERROR_INVALID_ARGUMENT); + } + + if (items.length == 0) { + removeAll(); + return; + } + + int index = 0; + int [] table = new int [items.length]; + String codePage = getCodePage (); + while (index < items.length) { + String string = items [index]; + byte [] buffer = Converter.wcsToMbcs (codePage, encodeString(string), true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) break; + table [index++] = xmString; + } + int ptr = OS.XtMalloc (index * 4); + OS.memmove (ptr, table, index * 4); + int [] argList1 = {OS.XmNitems, ptr, OS.XmNitemCount, index}; + OS.XtSetValues (handle, argList1, argList1.length / 2); + for (int i=0; i<index; i++) OS.XmStringFree (table [i]); + OS.XtFree (ptr); + if (index < items.length) error (SWT.ERROR_ITEM_NOT_ADDED); + + int [] argList2 = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList2, argList2.length / 2); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList2[1], new byte[1]); + display.setWarnings(warnings); + int [] argList3 = {OS.XmNlist, 0}; + OS.XtGetValues (handle, argList3, argList3.length / 2); + int [] argList4 = {OS.XmNselectedItemCount, 0, OS.XmNselectedItems, 0}; + OS.XtSetValues (argList3 [1], argList4, argList4.length / 2); +} +/** + * Marks the receiver's list as visible if the argument is <code>true</code>, + * and marks it invisible otherwise. + * <p> + * If one of the receiver's ancestors is not visible or some + * other condition makes the receiver not visible, marking + * it visible may not actually cause it to be displayed. + * </p> + * + * @param visible the new visibility state + * + * @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 3.4 + */ +public void setListVisible (boolean visible) { + checkWidget (); + if ((style & SWT.DROP_DOWN) != 0) { + int[] argList1 = new int[] {OS.XmNlist, 0, OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + int xtParent = OS.XtParent (argList1 [1]); + while (xtParent != 0 && !OS.XtIsSubclass (xtParent, OS.shellWidgetClass ())) { + xtParent = OS.XtParent (xtParent); + } + if (xtParent != 0) { + if (visible) { + int [] argList2 = {OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0}; + OS.XtGetValues (argList1 [3], argList2, argList2.length / 2); + int x = argList2 [1], y = argList2 [3] + argList2 [7] + argList2 [9]; + short [] root_x = new short [1], root_y = new short [1]; + OS.XtTranslateCoords (handle, (short) x, (short) y, root_x, root_y); + OS.XtMoveWidget (xtParent, root_x [0], root_y [0]); + OS.XtPopup (xtParent, OS.XtGrabNone); + } else { + // This code is intentionally commented + //OS.XtPopdown (xtParent); + } + } + } +} +/** + * Sets the orientation of the receiver, which must be one + * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. + * <p> + * + * @param orientation new orientation style + * + * @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 2.1.2 + */ +public void setOrientation (int orientation) { + checkWidget(); +} +/** + * Sets the selection in the receiver's text field to the + * range specified by the argument whose x coordinate is the + * start of the selection and whose y coordinate is the end + * of the selection. + * + * @param selection a point representing the new selection start and end + * + * @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 void setSelection (Point selection) { + checkWidget(); + if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); + + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + + /* Clear the highlight before setting the selection. */ + int position = OS.XmTextGetLastPosition (argList[1]); + + /* + * Bug in MOTIF. XmTextSetSelection () fails to set the + * selection when the receiver is not realized. The fix + * is to force the receiver to be realized by forcing the + * shell to be realized. If the receiver is realized before + * the shell, MOTIF fails to draw the text widget and issues + * lots of X BadDrawable errors. + */ + if (!OS.XtIsRealized (handle)) getShell ().realizeWidget (); + + /* Set the selection. */ + int xDisplay = OS.XtDisplay (argList[1]); + if (xDisplay == 0) return; + int nStart = Math.min (Math.max (Math.min (selection.x, selection.y), 0), position); + int nEnd = Math.min (Math.max (Math.max (selection.x, selection.y), 0), position); + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetSelection (argList[1], nStart, nEnd, OS.XtLastTimestampProcessed (xDisplay)); + + /* Force the i-beam to follow the highlight/selection. */ + OS.XmTextSetInsertionPosition (argList[1], nEnd); + display.setWarnings(warnings); +} +/** + * Sets the contents of the receiver's text field to the + * given string. + * <p> + * This call is ignored when the receiver is read only and + * the given string is not in the receiver's list. + * </p> + * <p> + * Note: The text field in a <code>Combo</code> is typically + * only capable of displaying a single line of text. Thus, + * setting the text to a string containing line breaks or + * other special characters will probably cause it to + * display incorrectly. + * </p> + * + * @param string the new text + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string 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 void setText (String string) { + checkWidget(); + if (string == null) error (SWT.ERROR_NULL_ARGUMENT); + + /* + * The read-only and non-read-only cases must be handled + * separately here because the platform will allow the + * text of a read-only combo to be set to any value, + * regardless of whether it appears in the combo's item + * list or not. + */ + if ((style & SWT.READ_ONLY) != 0) { + int index = indexOf (string); + if (index != -1) select (index); + } else { + byte [] buffer = Converter.wcsToMbcs (getCodePage (), string, true); + int xmString = OS.XmStringCreateLocalized (buffer); + if (xmString == 0) return; + int [] argList = {OS.XmNtextField, 0, OS.XmNlist, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + int index = OS.XmListItemPos (argList[3], xmString); + if (index > 0) { + /* The list contains the item. */ + OS.XmComboBoxSelectItem(handle, xmString); + } else { + /* The list does not contain the item. */ + boolean warnings = display.getWarnings (); + display.setWarnings (false); + OS.XmTextSetString (argList[1], buffer); + OS.XmTextSetInsertionPosition (argList[1], 0); + display.setWarnings(warnings); + } + OS.XmStringFree (xmString); + } +} +/** + * Sets the maximum number of characters that the receiver's + * text field is capable of holding to be the argument. + * <p> + * To reset this value to the default, use <code>setTextLimit(Combo.LIMIT)</code>. + * Specifying a limit value larger than <code>Combo.LIMIT</code> sets the + * receiver's limit to <code>Combo.LIMIT</code>. + * </p> + * @param limit new text limit + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</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 #LIMIT + */ +public void setTextLimit (int limit) { + checkWidget(); + if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); + int [] argList = {OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + OS.XmTextSetMaxLength (argList[1], limit); +} +/** + * Sets the number of items that are visible in the drop + * down portion of the receiver's list. + * <p> + * Note: This operation is a hint and is not supported on + * platforms that do not have this concept. + * </p> + * + * @param count the new number of items to be 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> + * + * @since 3.0 + */ +public void setVisibleItemCount (int count) { + checkWidget (); + if (count < 0) return; + this.visibleCount = count; + /* + * But in Motif. Setting the XmNvisibleItemCount resource + * for the combo box after it has been realized causes the + * widget to layout badly, sometimes moving the drop down + * arrow part of the combo box outside of the bounds. + * The fix is to set the XmNvisibleItemCount resource on + * the list instead. + */ + int [] argList1 = new int [] {OS.XmNlist, 0}; + OS.XtGetValues (handle, argList1, argList1.length / 2); + int [] argList2 = {OS.XmNvisibleItemCount, count}; + OS.XtSetValues (argList1 [1], argList2, argList2.length / 2); +} +void deregister () { + super.deregister (); + int [] argList = {OS.XmNlist, 0, OS.XmNtextField, 0}; + OS.XtGetValues (handle, argList, argList.length / 2); + display.removeWidget (argList[1]); + display.removeWidget (argList[3]); +} +void enableWidget (boolean enabled) { + super.enableWidget (enabled); + int [] argList = { + OS.XmNlist, 0, + OS.XmNtextField, 0, + }; + OS.XtGetValues (handle, argList, argList.length / 2); + enableHandle (enabled, argList [1]); + enableHandle (enabled, argList [3]); +} +/** + * Bug in Motif. + * Empty strings in the combo will cause GPFs if a) they + * are the only items in the combo or b) if they are + * included in an array which is set as the value of the + * combo's items resource. To protect against these GPFs, + * make sure that no empty strings are added to the combo. + * The solution is to add a space to empty strings or + * strings which are all spaces. This space is removed + * when answering the text of items which are all spaces. + */ +String encodeString(String string) { + for (int i = 0; i < string.length(); i++) { + if (string.charAt(i) != ' ') { + return string; + } + } + return string + ' '; +} +/** + * Bug in Motif. + * Empty strings in the combo will cause GPFs if a) they + * are the only items in the combo or b) if they are + * included in an array which is set as the value of the + * combo's items resource. To protect against these GPFs, + * make sure that no empty strings are added to the combo. + * The solution is to add a space to empty strings or + * strings which include only spaces. A space is removed + * when answering the text of items which are all spaces. + */ +String decodeString(String string) { + if (string.length() == 0) return string; + + for (int i = 0; i < string.length(); i++) { + if (string.charAt(i) != ' ') { + return string; + } + } + return string.substring(0, string.length() - 1); +} +int XmNactivateCallback (int w, int client_data, int call_data) { + postEvent (SWT.DefaultSelection); + return 0; +} +int XmNbrowseSelectionCallback (int w, int client_data, int call_data) { + /* + * Bug in MOTIF. If items have been added and removed from a + * combo then users are able to select an empty drop-down item + * in the combo once and force a resulting callback. In such + * cases we want to eat this callback so that listeners are not + * notified. + */ + if (ignoreSelect || getSelectionIndex() == -1) return 0; + postEvent (SWT.Selection); + return 0; +} +int XmNmodifyVerifyCallback (int w, int client_data, int call_data) { + int result = super.XmNmodifyVerifyCallback (w, client_data, call_data); + if (result != 0) return result; + if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return result; + XmTextVerifyCallbackStruct textVerify = new XmTextVerifyCallbackStruct (); + OS.memmove (textVerify, call_data, XmTextVerifyCallbackStruct.sizeof); + XmTextBlockRec textBlock = new XmTextBlockRec (); + OS.memmove (textBlock, textVerify.text, XmTextBlockRec.sizeof); + byte [] buffer = new byte [textBlock.length]; + OS.memmove (buffer, textBlock.ptr, textBlock.length); + String codePage = getCodePage (); + String text = new String (Converter.mbcsToWcs (codePage, buffer)); + Event event = new Event (); + if (textVerify.event != 0) { + XKeyEvent xEvent = new XKeyEvent (); + OS.memmove (xEvent, textVerify.event, XKeyEvent.sizeof); + event.time = xEvent.time; + setKeyState (event, xEvent); + } + event.start = textVerify.startPos; + event.end = textVerify.endPos; + event.doit = textVerify.doit == 1; + event.text = text; + sendEvent (SWT.Verify, event); + String newText = event.text; + textVerify.doit = (byte) ((event.doit && newText != null) ? 1 : 0); + if (newText != null && newText != text) { + OS.XtFree(textBlock.ptr); + byte [] buffer2 = Converter.wcsToMbcs (codePage, newText, true); + int length = buffer2.length; + int ptr = OS.XtMalloc (length); + OS.memmove (ptr, buffer2, length); + textBlock.ptr = ptr; + textBlock.length = buffer2.length - 1; + OS.memmove (textVerify.text, textBlock, XmTextBlockRec.sizeof); + } + OS.memmove (call_data, textVerify, XmTextVerifyCallbackStruct.sizeof); + return result; +} +int XmNvalueChangedCallback (int w, int client_data, int call_data) { + sendEvent (SWT.Modify); + return 0; +} +} |