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package org.eclipse.swt.widgets;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved
*/
import org.eclipse.swt.internal.photon.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
public class Menu extends Widget {
int x, y;
boolean hasLocation;
Decorations parent;
MenuItem cascade, defaultItem;
public Menu (Control parent) {
this (checkNull (parent).getShell (), SWT.POP_UP);
}
public Menu (Decorations parent, int style) {
super (parent, checkStyle (style));
this.parent = parent;
createWidget (0);
}
public Menu (Menu parentMenu) {
this (checkNull (parentMenu).parent, SWT.DROP_DOWN);
}
public Menu (MenuItem parentItem) {
this (checkNull (parentItem).parent);
}
static Control checkNull (Control control) {
if (control == null) error (SWT.ERROR_NULL_ARGUMENT);
return control;
}
static Menu checkNull (Menu menu) {
if (menu == null) error (SWT.ERROR_NULL_ARGUMENT);
return menu;
}
static MenuItem checkNull (MenuItem item) {
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
return item;
}
static int checkStyle (int style) {
return checkBits (style, SWT.POP_UP, SWT.BAR, SWT.DROP_DOWN, 0, 0, 0);
}
public void addHelpListener (HelpListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Help, typedListener);
}
public void addMenuListener (MenuListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Hide,typedListener);
addListener (SWT.Show,typedListener);
}
void createHandle (int index) {
state |= HANDLE;
int parentHandle = parent.topHandle ();
if ((style & SWT.BAR) != 0) {
int [] args = {
OS.Pt_ARG_FLAGS, 0, OS.Pt_GETS_FOCUS,
OS.Pt_ARG_FLAGS, OS.Pt_DELAY_REALIZE, OS.Pt_DELAY_REALIZE,
};
handle = OS.PtCreateWidget (OS.PtMenuBar (), parentHandle, args.length / 3, args);
} else {
handle = OS.PtCreateWidget (OS.PtMenu (), parentHandle, 0, null);
}
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
}
void createWidget (int index) {
super.createWidget (index);
parent.add (this);
}
public MenuItem getDefaultItem () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return defaultItem;
}
public Display getDisplay () {
Decorations parent = this.parent;
if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
return parent.getDisplay ();
}
public boolean getEnabled () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_FLAGS, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return (args [1] & OS.Pt_BLOCKED) == 0;
}
public int getItemCount () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int count = 0;
int child = OS.PtWidgetChildBack (handle);
if (child != 0 && (style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child);
while (child != 0) {
child = OS.PtWidgetBrotherInFront (child);
count++;
}
return count;
}
public MenuItem getItem (int index) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (index < 0) error (SWT.ERROR_INVALID_RANGE);
int i = 0;
int child = OS.PtWidgetChildBack (handle);
if (child != 0 && (style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child);
while (child != 0) {
Widget widget = WidgetTable.get (child);
if (widget != null && widget instanceof MenuItem) {
if (i++ == index) return (MenuItem) widget;
}
child = OS.PtWidgetBrotherInFront (child);
}
error (SWT.ERROR_INVALID_RANGE);
return null;
}
public MenuItem [] getItems () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int count = 0;
int child = OS.PtWidgetChildBack (handle);
if (child != 0 && (style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child);
while (child != 0) {
child = OS.PtWidgetBrotherInFront (child);
count++;
}
MenuItem [] items = new MenuItem [count];
int i = 0, j = 0;
child = OS.PtWidgetChildBack (handle);
if (child != 0 && (style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child);
while (i < count) {
Widget widget = WidgetTable.get (child);
if (widget != null && widget instanceof MenuItem) {
items [j++] = (MenuItem) widget;
}
i++;
child = OS.PtWidgetBrotherInFront (child);
}
if (i == j) return items;
MenuItem [] newItems = new MenuItem [j];
System.arraycopy (items, 0, newItems, 0, j);
return newItems;
}
String getNameText () {
String result = "";
MenuItem [] items = getItems ();
int length = items.length;
if (length > 0) {
for (int i=0; i<length-1; i++) {
result = result + items [i].getNameText() + ", ";
}
result = result + items [length-1].getNameText ();
}
return result;
}
public Decorations getParent () {
return parent;
}
public MenuItem getParentItem () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return cascade;
}
public Menu getParentMenu () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (cascade != null) return cascade.parent;
return null;
}
public Shell getShell () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return parent.getShell ();
}
public boolean getVisible () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return true;
}
void hookEvents () {
int windowProc = getDisplay ().windowProc;
OS.PtAddCallback (handle, OS.Pt_CB_UNREALIZED, windowProc, SWT.Hide);
}
public int indexOf (MenuItem item) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
int i = 0;
int child = OS.PtWidgetChildBack (handle);
if (child != 0 && (style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child);
while (child != 0) {
Widget widget = WidgetTable.get (child);
if (item == widget) return i;
if (widget != null && widget instanceof MenuItem) i++;
child = OS.PtWidgetBrotherInFront (child);
}
return -1;
}
public boolean isEnabled () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
Menu parentMenu = getParentMenu ();
if (parentMenu == null) return getEnabled ();
return getEnabled () && parentMenu.isEnabled ();
}
public boolean isVisible () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return getVisible ();
}
int processHide (int info) {
if (cascade != null) {
int [] args = {OS.Pt_ARG_MENU_FLAGS, 0, OS.Pt_MENU_CHILD};
OS.PtSetResources (handle, args.length / 3, args);
int shellHandle = parent.topHandle ();
OS.PtReParentWidget (handle, shellHandle);
}
sendEvent (SWT.Hide);
return OS.Pt_CONTINUE;
}
void releaseChild () {
super.releaseChild ();
if (cascade != null) cascade.setMenu (null);
if ((style & SWT.BAR) != 0 && this == parent.menuBar) {
parent.setMenuBar (null);
}
}
void releaseWidget () {
MenuItem [] items = getItems ();
for (int i=0; i<items.length; i++) {
MenuItem item = items [i];
if (!item.isDisposed ()) {
item.releaseWidget ();
item.releaseHandle ();
}
}
super.releaseWidget ();
if (parent != null) parent.remove (this);
parent = null;
cascade = null;
}
public void removeHelpListener (HelpListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Help, listener);
}
public void removeMenuListener (MenuListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Hide, listener);
eventTable.unhook (SWT.Show, listener);
}
public void setDefaultItem (MenuItem item) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
defaultItem = item;
}
public void setEnabled (boolean enabled) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {
OS.Pt_ARG_FLAGS, enabled ? 0 : OS.Pt_BLOCKED, OS.Pt_BLOCKED,
OS.Pt_ARG_FLAGS, enabled ? 0 : OS.Pt_GHOST, OS.Pt_GHOST,
};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setLocation (int x, int y) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
this.x = x; this.y = y;
hasLocation = true;
}
public void setVisible (boolean visible) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if ((style & SWT.POP_UP) == 0) return;
if (visible) {
PhPoint_t pt = new PhPoint_t ();
pt.x = (short) x;
pt.y = (short) y;
if (!hasLocation) {
int ig = OS.PhInputGroup (0);
PhCursorInfo_t info = new PhCursorInfo_t ();
OS.PhQueryCursor ((short) ig, info);
pt.x = info.last_press_x;
pt.y = info.last_press_y;
}
int ptr = OS.malloc (PhPoint_t.sizeof);
OS.memmove (ptr, pt, PhPoint_t.sizeof);
int [] args = {OS.Pt_ARG_POS, ptr, 0};
OS.PtSetResources (handle, args.length / 3, args);
OS.free (ptr);
sendEvent (SWT.Show);
OS.PtRealizeWidget (handle);
} else {
OS.PtUnrealizeWidget(handle);
}
}
}
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