| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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.photon.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object |
| * that issues notification when pressed and released. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>CHECK, CASCADE, PUSH, RADIO, SEPARATOR</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Arm, Help, Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles CHECK, CASCADE, PUSH, RADIO and SEPARATOR |
| * may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class MenuItem extends Item { |
| Menu parent, menu; |
| int accelerator; |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Menu</code>) and a style value |
| * describing its behavior and appearance. The item is added |
| * to the end of the items maintained by its parent. |
| * <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 menu 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#CHECK |
| * @see SWT#CASCADE |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#SEPARATOR |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public MenuItem (Menu parent, int style) { |
| super (parent, checkStyle (style)); |
| this.parent = parent; |
| createWidget (parent.getItemCount ()); |
| } |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Menu</code>), a style value |
| * describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <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 menu control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @param index the index to store the receiver in its parent |
| * |
| * @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#CHECK |
| * @see SWT#CASCADE |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#SEPARATOR |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public MenuItem (Menu parent, int style, int index) { |
| super (parent, checkStyle (style)); |
| this.parent = parent; |
| createWidget (index); |
| } |
| |
| void addAccelerator () { |
| if (accelerator == 0) return; |
| int keyMods = 0; |
| if ((accelerator & SWT.ALT) != 0) keyMods |= OS.Pk_KM_Alt; |
| if ((accelerator & SWT.SHIFT) != 0) keyMods |= OS.Pk_KM_Shift; |
| if ((accelerator & SWT.CONTROL) != 0) keyMods |= OS.Pk_KM_Ctrl; |
| int key = (accelerator & ~(SWT.ALT | SWT.SHIFT | SWT.CONTROL)); |
| int keyCode = Display.untranslateKey (key); |
| if (keyCode != 0) key = keyCode; |
| else key = Character.toLowerCase ((char)key); |
| Shell shell = parent.getShell (); |
| OS.PtAddHotkeyHandler(shell.shellHandle, key, keyMods, (short)0, handle, display.hotkeyProc); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the arm events are generated for the control, by sending |
| * it one of the messages defined in the <code>ArmListener</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 ArmListener |
| * @see #removeArmListener |
| */ |
| public void addArmListener (ArmListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Arm, typedListener); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the help events are generated for the control, by sending |
| * it one of the messages defined in the <code>HelpListener</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 HelpListener |
| * @see #removeHelpListener |
| */ |
| public void addHelpListener (HelpListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Help, typedListener); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the menu item is selected, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the stateMask field of the event object is valid. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </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); |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| static int checkStyle (int style) { |
| return checkBits (style, SWT.PUSH, SWT.CHECK, SWT.RADIO, SWT.SEPARATOR, SWT.CASCADE, 0); |
| } |
| |
| void createHandle (int index) { |
| state |= HANDLE; |
| int count = parent.getItemCount(); |
| if (!(0 <= index && index <= count)) error (SWT.ERROR_INVALID_RANGE); |
| int parentHandle = parent.handle; |
| if ((style & SWT.SEPARATOR) != 0) { |
| handle = OS.PtCreateWidget (OS.PtSeparator (), parentHandle, 0, null); |
| } else if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| int [] args = { |
| OS.Pt_ARG_INDICATOR_TYPE, (style & SWT.CHECK) != 0 ? OS.Pt_N_OF_MANY : OS.Pt_ONE_OF_MANY, 0 |
| }; |
| handle = OS.PtCreateWidget (OS.PtToggleButton (), parentHandle, args.length / 3, args); |
| } else { |
| handle = OS.PtCreateWidget (OS.PtMenuButton (), parentHandle, 0, null); |
| } |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| if (index != count) { |
| int i = 0; |
| int child = OS.PtWidgetChildBack (parentHandle); |
| /* |
| * Feature in Photon. Menu bars have an extra widget which |
| * is the parent of all menu items. PtValidParent() can not be |
| * used, since it does not return that widget. |
| */ |
| if (child != 0 && (parent.style & SWT.BAR) != 0) child = OS.PtWidgetChildBack (child); |
| while (i != index && child != 0) { |
| child = OS.PtWidgetBrotherInFront (child); |
| i++; |
| } |
| OS.PtWidgetInsert (topHandle (), child, 1); |
| } |
| if (OS.PtWidgetIsRealized (parentHandle)) { |
| OS.PtRealizeWidget (topHandle ()); |
| } |
| } |
| |
| /** |
| * Returns the widget accelerator. An accelerator is the bit-wise |
| * OR of zero or more modifier masks and a key. Examples: |
| * <code>SWT.CONTROL | SWT.SHIFT | 'T', SWT.ALT | SWT.F2</code>. |
| * The default value is zero, indicating that the menu item does |
| * not have an accelerator. |
| * |
| * @return the accelerator or 0 |
| * |
| * </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 getAccelerator () { |
| checkWidget(); |
| return accelerator; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is enabled, and |
| * <code>false</code> otherwise. A disabled menu item is typically |
| * not selectable from the user interface and draws with an |
| * inactive or "grayed" look. |
| * |
| * @return the receiver's enabled 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> |
| * |
| * @see #isEnabled |
| */ |
| public boolean getEnabled () { |
| checkWidget (); |
| /* |
| * Bug in Photon. The Pt_BLOCKED flag of a menu item is cleared |
| * when its parent menu is realized. The fix is to remember |
| * the menu item state and reset it when the menu item is |
| * realized. |
| */ |
| // int topHandle = topHandle (); |
| // return (OS.PtWidgetFlags (topHandle) & OS.Pt_BLOCKED) == 0; |
| return (state & DISABLED) == 0; |
| } |
| |
| /** |
| * Returns the receiver's cascade menu if it has one or null |
| * if it does not. Only <code>CASCADE</code> menu items can have |
| * a pull down menu. The sequence of key strokes, button presses |
| * and/or button releases that are used to request a pull down |
| * menu is platform specific. |
| * |
| * @return the receiver's menu |
| * |
| * @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 Menu getMenu () { |
| checkWidget(); |
| return menu; |
| } |
| |
| String getNameText () { |
| if ((style & SWT.SEPARATOR) != 0) return "|"; |
| return super.getNameText (); |
| } |
| |
| /** |
| * Returns the receiver's parent, which must be a <code>Menu</code>. |
| * |
| * @return the receiver's parent |
| * |
| * @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 Menu getParent () { |
| checkWidget(); |
| return parent; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is selected, |
| * and false otherwise. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. |
| * |
| * @return the selection 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> |
| */ |
| public boolean getSelection () { |
| checkWidget(); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return false; |
| return (OS.PtWidgetFlags (handle) & OS.Pt_SET) != 0; |
| } |
| |
| void hookEvents () { |
| if ((style & SWT.SEPARATOR) != 0) return; |
| int windowProc = display.windowProc; |
| if ((style & SWT.CASCADE) != 0) { |
| OS.PtAddCallback (handle, OS.Pt_CB_ARM, windowProc, OS.Pt_CB_ARM); |
| } |
| OS.PtAddCallback (handle, OS.Pt_CB_ACTIVATE, windowProc, OS.Pt_CB_ACTIVATE); |
| if ((parent.style & SWT.BAR) == 0) { |
| OS.PtAddCallback (handle, OS.Pt_CB_REALIZED, windowProc, OS.Pt_CB_REALIZED); |
| } |
| } |
| |
| int hotkeyProc (int widget, int data, int info) { |
| showMenu (); |
| return OS.Pt_CONTINUE; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is enabled and all |
| * of the receiver's ancestors are enabled, and <code>false</code> |
| * otherwise. A disabled menu item is typically not selectable from the |
| * user interface and draws with an inactive or "grayed" look. |
| * |
| * @return the receiver's enabled 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> |
| * |
| * @see #getEnabled |
| */ |
| public boolean isEnabled () { |
| return getEnabled () && parent.isEnabled (); |
| } |
| |
| int Pt_CB_ACTIVATE (int widget, int info) { |
| if ((style & SWT.CASCADE) != 0 && menu != null) { |
| return OS.Pt_CONTINUE; |
| } |
| Event event = new Event (); |
| if (info != 0) { |
| PtCallbackInfo_t cbinfo = new PtCallbackInfo_t (); |
| OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof); |
| if (cbinfo.event != 0) { |
| PhEvent_t ev = new PhEvent_t (); |
| OS.memmove (ev, cbinfo.event, PhEvent_t.sizeof); |
| int data = OS.PhGetData (cbinfo.event); |
| if (data != 0) { |
| switch (ev.type) { |
| case OS.Ph_EV_KEY: |
| PhKeyEvent_t ke = new PhKeyEvent_t (); |
| OS.memmove (ke, data, PhKeyEvent_t.sizeof); |
| setInputState (event, SWT.Selection, ke.key_mods, ke.button_state); |
| break; |
| case OS.Ph_EV_BUT_PRESS: |
| case OS.Ph_EV_BUT_RELEASE: |
| PhPointerEvent_t pe = new PhPointerEvent_t (); |
| OS.memmove (pe, data, PhPointerEvent_t.sizeof); |
| setInputState (event, SWT.Selection, pe.key_mods, pe.button_state); |
| break; |
| } |
| } |
| } |
| } |
| if ((style & SWT.RADIO) != 0) { |
| if ((parent.getStyle () & SWT.NO_RADIO_GROUP) == 0) { |
| selectRadio (); |
| } |
| } |
| postEvent (SWT.Selection, event); |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_ARM (int widget, int info) { |
| sendEvent (SWT.Arm); |
| showMenu (); |
| return OS.Pt_CONTINUE; |
| } |
| |
| int Pt_CB_REALIZED (int widget, int info) { |
| /* |
| * Bug in Photon. The Pt_BLOCKED flag of a menu item is cleared |
| * when its parent menu is realized. The fix is to remember |
| * the menu item state and reset it when the menu item is |
| * realized. |
| */ |
| int topHandle = topHandle (); |
| int flags = (state & DISABLED) != 0 ? OS.Pt_BLOCKED | OS.Pt_GHOST : 0; |
| OS.PtSetResource (topHandle, OS.Pt_ARG_FLAGS, flags, OS.Pt_BLOCKED | OS.Pt_GHOST); |
| return OS.Pt_CONTINUE; |
| } |
| |
| void releaseChild () { |
| super.releaseChild (); |
| if (menu != null) menu.dispose (); |
| menu = null; |
| } |
| |
| void releaseWidget () { |
| if (menu != null && !menu.isDisposed ()) menu.releaseResources (); |
| menu = null; |
| super.releaseWidget (); |
| if (accelerator != 0) removeAccelerator (); |
| accelerator = 0; |
| parent = null; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the arm events are generated for the control. |
| * |
| * @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 ArmListener |
| * @see #addArmListener |
| */ |
| public void removeArmListener (ArmListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Arm, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the help events are generated for the control. |
| * |
| * @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 HelpListener |
| * @see #addHelpListener |
| */ |
| public void removeHelpListener (HelpListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Help, listener); |
| } |
| |
| void removeAccelerator () { |
| if (accelerator == 0) return; |
| int keyMods = 0; |
| if ((accelerator & SWT.ALT) != 0) keyMods |= OS.Pk_KM_Alt; |
| if ((accelerator & SWT.SHIFT) != 0) keyMods |= OS.Pk_KM_Shift; |
| if ((accelerator & SWT.CONTROL) != 0) keyMods |= OS.Pk_KM_Ctrl; |
| int key = (accelerator & ~(SWT.ALT | SWT.SHIFT | SWT.CONTROL)); |
| int keyCode = Display.untranslateKey (key); |
| if (keyCode != 0) key = keyCode; |
| else key = Character.toLowerCase ((char)key); |
| Shell shell = parent.getShell (); |
| OS.PtRemoveHotkeyHandler(shell.shellHandle, key, keyMods, (short)0, handle, display.hotkeyProc); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected. |
| * |
| * @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); |
| } |
| |
| void selectRadio () { |
| int index = 0; |
| MenuItem [] items = parent.getItems (); |
| while (index < items.length && items [index] != this) index++; |
| int i = index - 1; |
| while (i >= 0 && items [i].setRadioSelection (false)) --i; |
| int j = index + 1; |
| while (j < items.length && items [j].setRadioSelection (false)) j++; |
| setSelection (true); |
| } |
| |
| /** |
| * Sets the widget accelerator. An accelerator is the bit-wise |
| * OR of zero or more modifier masks and a key. Examples: |
| * <code>SWT.MOD1 | SWT.MOD2 | 'T', SWT.MOD3 | SWT.F2</code>. |
| * <code>SWT.CONTROL | SWT.SHIFT | 'T', SWT.ALT | SWT.F2</code>. |
| * The default value is zero, indicating that the menu item does |
| * not have an accelerator. |
| * |
| * @param accelerator an integer that is the bit-wise OR of masks and a key |
| * |
| * </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 setAccelerator (int accelerator) { |
| checkWidget(); |
| if (this.accelerator == accelerator) return; |
| removeAccelerator (); |
| this.accelerator = accelerator; |
| addAccelerator (); |
| } |
| |
| /** |
| * Enables the receiver if the argument is <code>true</code>, |
| * and disables it otherwise. A disabled menu item is typically |
| * not selectable from the user interface and draws with an |
| * inactive or "grayed" look. |
| * |
| * @param enabled the new enabled 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> |
| */ |
| public void setEnabled (boolean enabled) { |
| checkWidget (); |
| if (enabled) { |
| state &= ~DISABLED; |
| } else { |
| state |= DISABLED; |
| } |
| int topHandle = topHandle (); |
| int flags = (state & DISABLED) != 0 ? OS.Pt_BLOCKED | OS.Pt_GHOST : 0; |
| OS.PtSetResource (topHandle, OS.Pt_ARG_FLAGS, flags, OS.Pt_BLOCKED | OS.Pt_GHOST); |
| } |
| |
| /** |
| * Sets the image the receiver will display to the argument. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept (for example, Windows NT). |
| * </p> |
| * |
| * @param image the image to display |
| * |
| * @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 setImage (Image image) { |
| checkWidget(); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| if (this.image == image) return; |
| super.setImage (image); |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) return; |
| int imageHandle = 0; |
| int type = OS.Pt_Z_STRING; |
| if (image != null) { |
| imageHandle = copyPhImage (image.handle); |
| if (text.length () != 0) type = OS.Pt_TEXT_IMAGE; |
| else type = OS.Pt_IMAGE; |
| } else { |
| /* |
| * Bug in Photon. Photon will segment fault, if Pt_ARG_LABEL_IMAGE |
| * is set to NULL. This means that after setting an image into a |
| * PtMenuButton, it can never be removed. The fix is to set it to |
| * a small blank image. |
| */ |
| imageHandle = copyPhImage (display.nullImage); |
| } |
| int [] args = { |
| OS.Pt_ARG_LABEL_IMAGE, imageHandle, 0, |
| OS.Pt_ARG_LABEL_TYPE, type, 0, |
| }; |
| OS.PtSetResources (handle, args.length / 3, args); |
| if (imageHandle != 0) OS.free (imageHandle); |
| /* |
| * Bug on Photon. When a the text is set on a menu |
| * item that is realized, the menu item does not resize |
| * to show the new text. The fix is to force the item |
| * to recalculate the size. |
| */ |
| if (OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (parent.handle); |
| } |
| |
| /** |
| * Sets the receiver's pull down menu to the argument. |
| * Only <code>CASCADE</code> menu items can have a |
| * pull down menu. The sequence of key strokes, button presses |
| * and/or button releases that are used to request a pull down |
| * menu is platform specific. |
| * |
| * @param menu the new pull down menu |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_MENU_NOT_DROP_DOWN - if the menu is not a drop down menu</li> |
| * <li>ERROR_MENUITEM_NOT_CASCADE - if the menu item is not a <code>CASCADE</code></li> |
| * <li>ERROR_INVALID_ARGUMENT - if the menu has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if the menu is not in the same widget tree</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 setMenu (Menu menu) { |
| checkWidget(); |
| if ((style & SWT.CASCADE) == 0) { |
| error (SWT.ERROR_MENUITEM_NOT_CASCADE); |
| } |
| if (menu != null) { |
| if (menu.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); |
| if ((menu.style & SWT.DROP_DOWN) == 0) { |
| error (SWT.ERROR_MENU_NOT_DROP_DOWN); |
| } |
| if (menu.parent != parent.parent) { |
| error (SWT.ERROR_INVALID_PARENT); |
| } |
| } |
| Menu oldMenu = this.menu; |
| if (oldMenu == menu) return; |
| this.menu = menu; |
| if (oldMenu != null) { |
| oldMenu.cascade = null; |
| if ((parent.style & SWT.BAR) == 0) { |
| OS.PtSetResource (handle, OS.Pt_ARG_BUTTON_TYPE, OS.Pt_MENU_TEXT, 0); |
| } |
| } |
| if (menu != null) { |
| menu.cascade = this; |
| if ((parent.style & SWT.BAR) == 0) { |
| OS.PtSetResource (handle, OS.Pt_ARG_BUTTON_TYPE, OS.Pt_MENU_RIGHT, 0); |
| } |
| } |
| } |
| |
| boolean setRadioSelection (boolean value) { |
| if ((style & SWT.RADIO) == 0) return false; |
| if (getSelection () != value) { |
| setSelection (value); |
| postEvent (SWT.Selection); |
| } |
| return true; |
| } |
| /** |
| * Sets the selection state of the receiver. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. |
| * |
| * @param selected the new selection 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> |
| */ |
| public void setSelection (boolean selected) { |
| checkWidget(); |
| if ((style & (SWT.CHECK | SWT.RADIO | SWT.TOGGLE)) == 0) return; |
| OS.PtSetResource (handle, OS.Pt_ARG_FLAGS, selected ? OS.Pt_SET : 0, OS.Pt_SET); |
| } |
| |
| /** |
| * Sets the receiver's text. The string may include |
| * the mnemonic character and accelerator text. |
| * <p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, a selection |
| * event occurs. On most platforms, the mnemonic appears |
| * underlined but may be emphasised in a platform specific |
| * manner. The mnemonic indicator character '&' can be |
| * escaped by doubling it in the string, causing a single |
| *'&' to be displayed. |
| * </p> |
| * <p> |
| * Accelerator text is indicated by the '\t' character. |
| * On platforms that support accelerator text, the text |
| * that follows the '\t' character is displayed to the user, |
| * typically indicating the key stroke that will cause |
| * the item to become selected. On most platforms, the |
| * accelerator text appears right aligned in the menu. |
| * Setting the accelerator text does not install the |
| * accelerator key sequence. The accelerator key sequence |
| * is installed using #setAccelerator. |
| * </p> |
| * |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text 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 #setAccelerator |
| */ |
| public void setText (String string) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| super.setText (string); |
| char [] text = new char [string.length ()]; |
| string.getChars (0, text.length, text, 0); |
| boolean accel = false; |
| int i=0, j=0; |
| char mnemonic=0; |
| while (i < text.length) { |
| if (text [i] == '\t') {accel = true; break;} |
| if ((text [j++] = text [i++]) == '&') { |
| if (i == text.length) {continue;} |
| if (text [i] == '&') {i++; continue;} |
| if (mnemonic == 0) mnemonic = text [i]; |
| j--; |
| } |
| } |
| int keyMods = 0; |
| byte [] buffer2 = new byte [1]; |
| if (accel && ++i < text.length) { |
| int start = i; |
| // while (i < text.length) { |
| // if (text [i] == '+') { |
| // String str = new String (text, start, i - start); |
| // if (str.equals ("Ctrl")) keyMods |= OS.Pk_KM_Ctrl; |
| // if (str.equals ("Shift")) keyMods |= OS.Pk_KM_Shift; |
| // if (str.equals ("Alt")) keyMods |= OS.Pk_KM_Alt; |
| // start = i + 1; |
| // } |
| // i++; |
| // } |
| if (start < text.length) { |
| char [] accelText = new char [text.length - start]; |
| System.arraycopy (text, start, accelText, 0, accelText.length); |
| buffer2 = Converter.wcsToMbcs (null, accelText, true); |
| } |
| } |
| while (j < text.length) text [j++] = 0; |
| byte [] buffer1 = Converter.wcsToMbcs (null, text, true); |
| int ptr1 = OS.malloc (buffer1.length); |
| OS.memmove (ptr1, buffer1, buffer1.length); |
| int ptr2 = OS.malloc (buffer2.length); |
| OS.memmove (ptr2, buffer2, buffer2.length); |
| int ptr3 = 0; |
| if (mnemonic != 0) { |
| byte [] buffer3 = Converter.wcsToMbcs (null, new char []{mnemonic}, true); |
| ptr3 = OS.malloc (buffer3.length); |
| OS.memmove (ptr3, buffer3, buffer3.length); |
| } |
| if ((parent.style & SWT.BAR) != 0) { |
| replaceMnemonic (mnemonic, false, true); |
| } |
| int type = OS.Pt_Z_STRING; |
| if ((style & SWT.PUSH) != 0) { |
| if (image != null) type = OS.Pt_TEXT_IMAGE; |
| } |
| int [] args = { |
| OS.Pt_ARG_TEXT_STRING, ptr1, 0, |
| OS.Pt_ARG_ACCEL_TEXT, ptr2, 0, |
| OS.Pt_ARG_MODIFIER_KEYS, keyMods, keyMods, |
| OS.Pt_ARG_ACCEL_KEY, ptr3, 0, |
| OS.Pt_ARG_LABEL_TYPE, type, 0, |
| }; |
| OS.PtSetResources (handle, args.length / 3, args); |
| OS.free (ptr1); |
| OS.free (ptr2); |
| OS.free (ptr3); |
| /* |
| * Bug on Photon. When a the text is set on a menu |
| * item that is realized, the menu item does not resize |
| * to show the new text. The fix is to force the item |
| * to recalculate the size. |
| */ |
| if (OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (parent.handle); |
| } |
| |
| void showMenu() { |
| if (menu == null) return; |
| int menuHandle = menu.handle; |
| if (!OS.PtWidgetIsRealized (menuHandle)) { |
| if ((parent.style & SWT.BAR) == 0) { |
| OS.PtSetResource (menuHandle, OS.Pt_ARG_MENU_FLAGS, OS.Pt_MENU_CHILD, OS.Pt_MENU_CHILD); |
| } |
| OS.PtReParentWidget (menuHandle, handle); |
| |
| /* |
| * Bug in Photon. PtPositionMenu does not position the menu |
| * properly when the menu is a direct child a menu bar item. |
| * The fix is to position the menu ourselfs. |
| */ |
| if ((parent.style & SWT.BAR) != 0) { |
| PhPoint_t pt = new PhPoint_t (); |
| short [] x = new short [1], y = new short [1]; |
| OS.PtGetAbsPosition (handle, x, y); |
| pt.x = x [0]; |
| pt.y = y [0]; |
| int [] args = {OS.Pt_ARG_HEIGHT, 0, 0}; |
| OS.PtGetResources (handle, args.length / 3, args); |
| pt.y += args [1]; |
| int ptr = OS.malloc (PhPoint_t.sizeof); |
| OS.memmove (ptr, pt, PhPoint_t.sizeof); |
| OS.PtSetResource (menuHandle, OS.Pt_ARG_POS, ptr, 0); |
| OS.free (ptr); |
| } else { |
| OS.PtPositionMenu (menuHandle, null); |
| } |
| |
| menu.sendEvent (SWT.Show); |
| OS.PtRealizeWidget (menuHandle); |
| } |
| } |
| |
| } |