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eclipse / platform / eclipse.platform.swt / 794bcaa6a181ec00bb5a00a3dc2039b598f2c99c / . / bundles / org.eclipse.swt / Eclipse SWT / motif / org / eclipse / swt / widgets / Control.java
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package org.eclipse.swt.widgets;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved
*/
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.motif.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
/**
* Control is the abstract superclass of all windowed user interface classes.
* <p>
* <dl>
* <dt><b>Styles:</b>
* <dd>BORDER</dd>
* <dt><b>Events:</b>
* <dd>FocusIn, FocusOut, Help, KeyDown, KeyUp, MouseDoubleClick, MouseDown, MouseEnter,
* MouseExit, MouseHover, MouseUp, MouseMove, Move, Paint, Resize</dd>
* </dl>
* <p>
* IMPORTANT: This class is intended to be subclassed <em>only</em>
* within the SWT implementation.
* </p>
*/
public abstract class Control extends Widget implements Drawable {
Composite parent;
int fontList;
Menu menu;
String toolTipText;
Object layoutData;
Control () {
/* Do nothing */
}
/**
* 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
* for all SWT widget classes should include a comment which
* describes the style constants which are applicable to the class.
* </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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Control (Composite parent, int style) {
super (parent, style);
this.parent = parent;
createWidget (0);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control is moved or resized, by sending
* it one of the messages defined in the <code>ControlListener</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 ControlListener
* @see #removeControlListener
*/
public void addControlListener(ControlListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Resize,typedListener);
addListener (SWT.Move,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the control gains or loses focus, by sending
* it one of the messages defined in the <code>FocusListener</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 FocusListener
* @see #removeFocusListener
*/
public void addFocusListener(FocusListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.FocusIn,typedListener);
addListener(SWT.FocusOut,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 keys are pressed and released on the system keyboard, by sending
* it one of the messages defined in the <code>KeyListener</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 KeyListener
* @see #removeKeyListener
*/
public void addKeyListener(KeyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.KeyUp,typedListener);
addListener(SWT.KeyDown,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when mouse buttons are pressed and released, by sending
* it one of the messages defined in the <code>MouseListener</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 MouseListener
* @see #removeMouseListener
*/
public void addMouseListener(MouseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.MouseDown,typedListener);
addListener(SWT.MouseUp,typedListener);
addListener(SWT.MouseDoubleClick,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the mouse passes or hovers over controls, by sending
* it one of the messages defined in the <code>MouseTrackListener</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 MouseTrackListener
* @see #removeMouseTrackListener
*/
public void addMouseTrackListener (MouseTrackListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.MouseEnter,typedListener);
addListener (SWT.MouseExit,typedListener);
addListener (SWT.MouseHover,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the mouse moves, by sending it one of the
* messages defined in the <code>MouseMoveListener</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 MouseMoveListener
* @see #removeMouseMoveListener
*/
public void addMouseMoveListener(MouseMoveListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.MouseMove,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver needs to be painted, by sending it
* one of the messages defined in the <code>PaintListener</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 PaintListener
* @see #removePaintListener
*/
public void addPaintListener(PaintListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener(SWT.Paint,typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when traversal events occur, by sending it
* one of the messages defined in the <code>TraverseListener</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 TraverseListener
* @see #removeTraverseListener
*/
public void addTraverseListener (TraverseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Traverse,typedListener);
}
/**
* Returns the preferred size of the receiver.
* <p>
* The <em>prefered size</em> of a control is the size that it would
* best be displayed at. The width hint and height hint arguments
* allow the caller to ask a control questions such as "Given a particular
* width, how high does the control need to be to show all of the contents?"
* To indicate that the caller does not wish to constrain a particular
* dimension, the constant <code>SWT.DEFAULT</code> is passed for the hint.
* </p>
*
* @param wHint the width hint (can be <code>SWT.DEFAULT</code>)
* @param hHint the height hint (can be <code>SWT.DEFAULT</code>)
* @return the preferred size of the control
*
* @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 Layout
*/
public Point computeSize (int wHint, int hHint) {
return computeSize (wHint, hHint, true);
}
/**
* Returns the preferred size of the receiver.
* <p>
* The <em>prefered size</em> of a control is the size that it would
* best be displayed at. The width hint and height hint arguments
* allow the caller to ask a control questions such as "Given a particular
* width, how high does the control need to be to show all of the contents?"
* To indicate that the caller does not wish to constrain a particular
* dimension, the constant <code>SWT.DEFAULT</code> is passed for the hint.
* </p><p>
* If the changed flag is <code>true</code>, it indicates that the receiver's
* <em>contents</em> have changed, therefore any caches that a layout manager
* containing the control may have been keeping need to be flushed. When the
* control is resized, the changed flag will be <code>false</code>, so layout
* manager caches can be retained.
* </p>
*
* @param wHint the width hint (can be <code>SWT.DEFAULT</code>)
* @param hHint the height hint (can be <code>SWT.DEFAULT</code>)
* @param changed <code>true</code> if the control's contents have changed, and <code>false</code> otherwise
* @return the preferred size of the control.
*
* @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 Layout
*/
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget();
int width = DEFAULT_WIDTH;
int height = DEFAULT_HEIGHT;
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
int border = getBorderWidth ();
width += border * 2;
height += border * 2;
return new Point (width, height);
}
Control computeTabGroup () {
if (isTabGroup ()) return this;
return parent.computeTabGroup ();
}
Control computeTabRoot () {
Control [] tabList = parent._getTabList ();
if (tabList != null) {
int index = 0;
while (index < tabList.length) {
if (tabList [index] == this) break;
index++;
}
if (index == tabList.length) {
if (isTabGroup ()) return this;
}
}
return parent.computeTabRoot ();
}
Control [] computeTabList () {
if (isTabGroup ()) {
if (getVisible () && getEnabled ()) {
return new Control [] {this};
}
}
return new Control [0];
}
void createWidget (int index) {
super.createWidget (index);
/*
* Register for the IME. This is necessary on single byte
* platforms as well as double byte platforms in order to
* get composed characters. For example, accented characters
* on a German locale.
*/
OS.XmImRegister (handle, 0);
/*
* Feature in MOTIF. When a widget is created before the
* parent has been realized, the widget is created behind
* all siblings in the Z-order. When a widget is created
* after the parent has been realized, it is created in
* front of all siblings. This is not incorrect but is
* unexpected. The fix is to force all widgets to always
* be created behind their siblings.
*/
int topHandle = topHandle ();
if (OS.XtIsRealized (topHandle)) {
int window = OS.XtWindow (topHandle);
if (window != 0) {
int display = OS.XtDisplay (topHandle);
if (display != 0) OS.XLowerWindow (display, window);
}
/*
* Make that the widget has been properly realized
* because the widget was created after the parent
* has been realized. This is not part of the fix
* for Z-order in the code above.
*/
realizeChildren ();
}
/*
* Bug in Motif. Under certain circumstances, when a
* text widget is created as a child of another control
* that has drag and drop, starting a drag in the text
* widget causes a protection fault. The fix is to
* disable the built in drag and drop for all widgets
* by overriding the drag start traslation.
*/
Display display = getDisplay ();
OS.XtOverrideTranslations (handle, display.dragTranslations);
/*
* Feature in Motif. When the XmNfontList resource is set for
* a widget, Motif creates a copy of the fontList and disposes
* the copy when the widget is disposed. This means that when
* the programmer queries the font, not only will the handle be
* different but the font will be unexpectedly disposed when
* the widget is disposed. This can cause GP's when the font
* is set in another widget. The fix is to cache the font the
* the programmer provides. The initial value of the cache is
* the default font for the widget.
*/
fontList = defaultFont ();
}
int defaultBackground () {
return getDisplay ().defaultBackground;
}
int defaultFont () {
return getDisplay ().defaultFontList;
}
int defaultForeground () {
return getDisplay ().defaultForeground;
}
void enableWidget (boolean enabled) {
enableHandle (enabled, handle);
}
char findMnemonic (String string) {
int index = 0;
int length = string.length ();
do {
while (index < length && string.charAt (index) != Mnemonic) index++;
if (++index >= length) return '\0';
if (string.charAt (index) != Mnemonic) return string.charAt (index);
index++;
} while (index < length);
return '\0';
}
int fontHandle () {
return handle;
}
/**
* Forces the receiver to have the <em>keyboard focus</em>, causing
* all keyboard events to be delivered to it.
*
* @return <code>true</code> if the control got focus, and <code>false</code> if it was unable to.
*
* @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 #setFocus
*/
public boolean forceFocus () {
checkWidget();
Decorations shell = menuShell ();
shell.setSavedFocus (this);
shell.bringToTop ();
return OS.XmProcessTraversal (handle, OS.XmTRAVERSE_CURRENT);
}
/**
* Returns the receiver's background color.
*
* @return the background color
*
* @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 Color getBackground () {
checkWidget();
return Color.motif_new (getDisplay (), getXColor (getBackgroundPixel ()));
}
int getBackgroundPixel () {
int [] argList = {OS.XmNbackground, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* Returns the receiver's border width.
*
* @return the border width
*
* @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 getBorderWidth () {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNborderWidth, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
return argList [1];
}
/**
* Returns a rectangle describing the receiver's size and location
* relative to its parent (or its display if its parent is null).
*
* @return the receiver's bounding rectangle
*
* @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 Rectangle getBounds () {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
int borders = argList [9] * 2;
return new Rectangle ((short) argList [1], (short) argList [3], argList [5] + borders, argList [7] + borders);
}
Point getClientLocation () {
short [] handle_x = new short [1], handle_y = new short [1];
OS.XtTranslateCoords (handle, (short) 0, (short) 0, handle_x, handle_y);
short [] topHandle_x = new short [1], topHandle_y = new short [1];
OS.XtTranslateCoords (parent.handle, (short) 0, (short) 0, topHandle_x, topHandle_y);
return new Point (handle_x [0] - topHandle_x [0], handle_y [0] - topHandle_y [0]);
}
String getCodePage () {
return Converter.getCodePage (OS.XtDisplay (handle), fontList);
}
/**
* Returns the display that the receiver was created on.
*
* @return the receiver's 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 Display getDisplay () {
Composite parent = this.parent;
if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
return parent.getDisplay ();
}
/**
* Returns <code>true</code> if the receiver is enabled, and
* <code>false</code> otherwise. A disabled control 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>
*/
public boolean getEnabled () {
checkWidget();
int [] argList = {OS.XmNsensitive, 0};
OS.XtGetValues (topHandle (), argList, argList.length / 2);
return argList [1] != 0;
}
/**
* Returns the font that the receiver will use to paint textual information.
*
* @return the receiver's font
*
* @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 Font getFont () {
checkWidget();
return Font.motif_new (getDisplay (), fontList);
}
int getFontAscent () {
/* Create a font context to iterate over each element in the font list */
int [] buffer = new int [1];
if (!OS.XmFontListInitFontContext (buffer, fontList)) {
error (SWT.ERROR_NO_HANDLES);
}
int context = buffer [0];
/* Values discovering during iteration */
int ascent = 0;
XFontStruct fontStruct = new XFontStruct ();
int fontListEntry;
int [] fontStructPtr = new int [1];
int [] fontNamePtr = new int [1];
/* Go through each entry in the font list. */
while ((fontListEntry = OS.XmFontListNextEntry (context)) != 0) {
int fontPtr = OS.XmFontListEntryGetFont (fontListEntry, buffer);
if (buffer [0] == 0) {
/* FontList contains a single font */
OS.memmove (fontStruct, fontPtr, XFontStruct.sizeof);
int fontAscent = Math.max (fontStruct.ascent, fontStruct.max_bounds_ascent);
if (fontAscent > ascent) ascent = fontAscent;
} else {
/* FontList contains a fontSet */
int nFonts = OS.XFontsOfFontSet (fontPtr, fontStructPtr, fontNamePtr);
int [] fontStructs = new int [nFonts];
OS.memmove (fontStructs, fontStructPtr [0], nFonts * 4);
/* Go through each fontStruct in the font set */
for (int i=0; i<nFonts; i++) {
OS.memmove (fontStruct, fontStructs[i], XFontStruct.sizeof);
int fontAscent = Math.max (fontStruct.ascent, fontStruct.max_bounds_ascent);
if (fontAscent > ascent) ascent = fontAscent;
}
}
}
OS.XmFontListFreeFontContext (context);
return ascent;
}
int getFontHeight () {
/* Create a font context to iterate over each element in the font list */
int [] buffer = new int [1];
if (!OS.XmFontListInitFontContext (buffer, fontList)) {
error (SWT.ERROR_NO_HANDLES);
}
int context = buffer [0];
/* Values discovering during iteration */
int height = 0;
XFontStruct fontStruct = new XFontStruct ();
int fontListEntry;
int [] fontStructPtr = new int [1];
int [] fontNamePtr = new int [1];
/* Go through each entry in the font list. */
while ((fontListEntry = OS.XmFontListNextEntry (context)) != 0) {
int fontPtr = OS.XmFontListEntryGetFont (fontListEntry, buffer);
if (buffer [0] == 0) {
/* FontList contains a single font */
OS.memmove (fontStruct, fontPtr, XFontStruct.sizeof);
int fontAscent = Math.max (fontStruct.ascent, fontStruct.max_bounds_ascent);
int fontDescent = Math.max (fontStruct.descent, fontStruct.max_bounds_descent);
int fontHeight = fontAscent + fontDescent;
if (fontHeight > height) height = fontHeight;
} else {
/* FontList contains a fontSet */
int nFonts = OS.XFontsOfFontSet (fontPtr, fontStructPtr, fontNamePtr);
int [] fontStructs = new int [nFonts];
OS.memmove (fontStructs, fontStructPtr [0], nFonts * 4);
/* Go through each fontStruct in the font set */
for (int i=0; i<nFonts; i++) {
OS.memmove (fontStruct, fontStructs[i], XFontStruct.sizeof);
int fontAscent = Math.max (fontStruct.ascent, fontStruct.max_bounds_ascent);
int fontDescent = Math.max (fontStruct.descent, fontStruct.max_bounds_descent);
int fontHeight = fontAscent + fontDescent;
if (fontHeight > height) height = fontHeight;
}
}
}
OS.XmFontListFreeFontContext (context);
return height;
}
//int getFontList () {
// int fontHandle = fontHandle ();
// int [] argList = {OS.XmNfontList, 0};
// OS.XtGetValues (fontHandle, argList, argList.length / 2);
// if (argList [1] != 0) return argList [1];
// if (fontList == 0) fontList = defaultFont ();
// return fontList;
//}
/**
* Returns the foreground color that the receiver will use to draw.
*
* @return the receiver's foreground color
*
* @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 Color getForeground () {
checkWidget();
return Color.motif_new (getDisplay (), getXColor (getForegroundPixel ()));
}
int getForegroundPixel () {
int [] argList = {OS.XmNforeground, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
short [] getIMECaretPos () {
return new short[]{0, 0};
}
/**
* Returns layout data which is associated with the receiver.
*
* @return the receiver's layout data
*
* @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 Object getLayoutData () {
checkWidget();
return layoutData;
}
/**
* Returns a point describing the receiver's location relative
* to its parent (or its display if its parent is null).
*
* @return the receiver's location
*
* @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 getLocation () {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNx, 0, OS.XmNy, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
return new Point ((short) argList [1], (short) argList [3]);
}
/**
* Returns the receiver's pop up menu if it has one, or null
* if it does not. All controls may optionally have a pop up
* menu that is displayed when the user requests one for
* the control. The sequence of key strokes, button presses
* and/or button releases that are used to request a pop up
* 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;
}
int getNavigationType () {
int [] argList = {OS.XmNnavigationType, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* Returns the receiver's parent, which must be a <code>Composite</code>
* or null when the receiver is a shell that was created with null or
* a display for a parent.
*
* @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 Composite getParent () {
checkWidget();
return parent;
}
Control [] getPath () {
int count = 0;
Shell shell = getShell ();
Control control = this;
while (control != shell) {
count++;
control = control.parent;
}
control = this;
Control [] result = new Control [count];
while (control != shell) {
result [--count] = control;
control = control.parent;
}
return result;
}
/**
* Returns the receiver's shell. For all controls other than
* shells, this simply returns the control's nearest ancestor
* shell. Shells return themselves, even if they are children
* of other shells.
*
* @return the receiver's shell
*
* @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 #getParent
*/
public Shell getShell () {
checkWidget();
return parent.getShell ();
}
/**
* Returns a point describing the receiver's size. The
* x coordinate of the result is the width of the receiver.
* The y coordinate of the result is the height of the
* receiver.
*
* @return the receiver's size
*
* @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 getSize () {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
int borders = argList [5] * 2;
return new Point (argList [1] + borders, argList [3] + borders);
}
/**
* Returns the receiver's tool tip text, or null if it has
* not been set.
*
* @return the receiver's tool tip 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 getToolTipText () {
checkWidget();
return toolTipText;
}
/**
* Returns <code>true</code> if the receiver 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 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>
*/
public boolean getVisible () {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNmappedWhenManaged, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
return argList [1] != 0;
}
XColor getXColor (int pixel) {
int display = OS.XtDisplay (handle);
if (display == 0) return null;
int [] argList = {OS.XmNcolormap, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int colormap = argList [1];
if (colormap == 0) return null;
XColor color = new XColor ();
color.pixel = pixel;
OS.XQueryColor (display, colormap, color);
return color;
}
boolean hasFocus () {
return this == getDisplay ().getFocusControl ();
}
void hookEvents () {
int windowProc = getDisplay ().windowProc;
OS.XtAddEventHandler (handle, OS.KeyPressMask, false, windowProc, SWT.KeyDown);
OS.XtAddEventHandler (handle, OS.KeyReleaseMask, false, windowProc, SWT.KeyUp);
OS.XtAddEventHandler (handle, OS.ButtonPressMask, false, windowProc, SWT.MouseDown);
OS.XtAddEventHandler (handle, OS.ButtonReleaseMask, false, windowProc, SWT.MouseUp);
OS.XtAddEventHandler (handle, OS.PointerMotionMask, false, windowProc, SWT.MouseMove);
OS.XtAddEventHandler (handle, OS.EnterWindowMask, false, windowProc, SWT.MouseEnter);
OS.XtAddEventHandler (handle, OS.LeaveWindowMask, false, windowProc, SWT.MouseExit);
OS.XtInsertEventHandler (handle, OS.ExposureMask, false, windowProc, SWT.Paint, OS.XtListTail);
OS.XtInsertEventHandler (handle, OS.FocusChangeMask, false, windowProc, SWT.FocusIn, OS.XtListTail);
OS.XtAddCallback (handle, OS.XmNhelpCallback, windowProc, SWT.Help);
}
/**
* Invokes platform specific functionality to allocate a new GC handle.
* <p>
* <b>IMPORTANT:</b> This method is <em>not</em> part of the public
* API for <code>Control</code>. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
* </p>
*
* @param data the platform specific GC data
* @return the platform specific GC handle
*
* @private
*/
public int internal_new_GC (GCData data) {
checkWidget();
if (!OS.XtIsRealized (handle)) {
Shell shell = getShell ();
shell.realizeWidget ();
}
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) SWT.error(SWT.ERROR_NO_HANDLES);
int xWindow = OS.XtWindow (handle);
if (xWindow == 0) SWT.error(SWT.ERROR_NO_HANDLES);
int xGC = OS.XCreateGC (xDisplay, xWindow, 0, null);
if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
OS.XSetGraphicsExposures (xDisplay, xGC, false);
int [] argList = {OS.XmNforeground, 0, OS.XmNbackground, 0, OS.XmNcolormap, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
if (data != null) {
data.device = getDisplay ();
data.display = xDisplay;
data.drawable = xWindow;
data.foreground = argList [1];
data.background = argList [3];
data.fontList = fontList;
data.colormap = argList [5];
}
return xGC;
}
/**
* Invokes platform specific functionality to dispose a GC handle.
* <p>
* <b>IMPORTANT:</b> This method is <em>not</em> part of the public
* API for <code>Control</code>. It is marked public only so that it
* can be shared within the packages provided by SWT. It is not
* available on all platforms, and should never be called from
* application code.
* </p>
*
* @param handle the platform specific GC handle
* @param data the platform specific GC data
*
* @private
*/
public void internal_dispose_GC (int xGC, GCData data) {
checkWidget ();
int xDisplay = 0;
if (data != null) xDisplay = data.display;
if (xDisplay == 0 && handle != 0) xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) SWT.error(SWT.ERROR_NO_HANDLES);
OS.XFreeGC (xDisplay, xGC);
}
/**
* Returns <code>true</code> if the receiver is enabled, and
* <code>false</code> otherwise. A disabled control 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>
*/
public boolean isEnabled () {
checkWidget();
return getEnabled () && parent.isEnabled ();
}
/**
* Returns <code>true</code> if the receiver has the user-interface
* focus, and <code>false</code> otherwise.
*
* @return the receiver's focus 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 isFocusControl () {
checkWidget();
return hasFocus ();
}
/**
* Returns <code>true</code> if the underlying operating
* system supports this reparenting, otherwise <code>false</code>
*
* @return <code>true</code> if the widget can be reparented, otherwise <code>false</code>
*
* @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 isReparentable () {
checkWidget();
return false;
}
boolean isShowing () {
/*
* This is not complete. Need to check if the
* widget is obscurred by a parent or sibling.
*/
if (!isVisible ()) return false;
Control control = this;
while (control != null) {
Point size = control.getSize ();
if (size.x == 1 || size.y == 1) {
return false;
}
control = control.parent;
}
return true;
}
boolean isTabGroup () {
int code = traversalCode (0, null);
if ((code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0) return false;
return (code & (SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_TAB_NEXT)) != 0;
}
boolean isTabItem () {
int code = traversalCode (0, null);
return (code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0;
}
/**
* Returns <code>true</code> if the receiver 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 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>
*/
public boolean isVisible () {
checkWidget();
return getVisible () && parent.isVisible ();
}
void manageChildren () {
OS.XtSetMappedWhenManaged (handle, false);
OS.XtManageChild (handle);
int [] argList1 = {OS.XmNborderWidth, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
OS.XtResizeWidget (handle, 1, 1, argList1 [1]);
OS.XtSetMappedWhenManaged (handle, true);
}
Decorations menuShell () {
return parent.menuShell ();
}
boolean mnemonicHit (char key) {
return false;
}
boolean mnemonicMatch (char key) {
return false;
}
/**
* Moves the receiver above the specified control in the
* drawing order. If the argument is null, then the receiver
* is moved to the top of the drawing order. The control at
* the top of the drawing order will not be covered by other
* controls even if they occupy intersecting areas.
*
* @param the sibling control (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void moveAbove (Control control) {
checkWidget();
if (control != null && control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
setZOrder (control, true);
}
/**
* Moves the receiver below the specified control in the
* drawing order. If the argument is null, then the receiver
* is moved to the bottom of the drawing order. The control at
* the bottom of the drawing order will be covered by all other
* controls which occupy intersecting areas.
*
* @param the sibling control (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void moveBelow (Control control) {
checkWidget();
if (control != null && control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
setZOrder (control, false);
}
/**
* Causes the receiver to be resized to its preferred size.
* For a composite, this involves computing the preferred size
* from its layout, if there is one.
*
* @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 #computeSize
*/
public void pack () {
checkWidget();
pack (true);
}
/**
* Causes the receiver to be resized to its preferred size.
* For a composite, this involves computing the preferred size
* from its layout, if there is one.
* <p>
* If the changed flag is <code>true</code>, it indicates that the receiver's
* <em>contents</em> have changed, therefore any caches that a layout manager
* containing the control may have been keeping need to be flushed. When the
* control is resized, the changed flag will be <code>false</code>, so layout
* manager caches can be retained.
* </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 #computeSize
*/
public void pack (boolean changed) {
checkWidget();
setSize (computeSize (SWT.DEFAULT, SWT.DEFAULT, changed));
}
int processDefaultSelection (int callData) {
postEvent (SWT.DefaultSelection);
return 0;
}
int processFocusIn () {
sendEvent (SWT.FocusIn);
// widget could be disposed at this point
if (handle == 0) return 0;
processIMEFocusIn ();
return 0;
}
int processFocusOut () {
sendEvent (SWT.FocusOut);
// widget could be disposed at this point
if (handle == 0) return 0;
processIMEFocusOut ();
return 0;
}
int processHelp (int callData) {
sendHelpEvent (callData);
return 0;
}
int processIMEFocusIn () {
if (!(hooks (SWT.KeyDown) || hooks (SWT.KeyUp))) return 0;
short [] point = getIMECaretPos ();
int ptr = OS.XtMalloc (4);
OS.memmove (ptr, point, 4);
/*
* Bug in Motif. On Linux Japanese only, XmImSetFocusValues will cause
* a GPF. The fix is to call XmImVaSetFocusValues instead.
*/
OS.XmImVaSetFocusValues (handle,
OS.XmNforeground, getForegroundPixel(),
OS.XmNbackground, getBackgroundPixel(),
OS.XmNspotLocation, ptr,
OS.XmNfontList, fontList,
0);
if (ptr != 0) OS.XtFree (ptr);
return 0;
}
int processIMEFocusOut () {
if (!(hooks (SWT.KeyDown) || hooks (SWT.KeyUp))) return 0;
OS.XmImUnsetFocus (handle);
return 0;
}
int processKeyDown (int callData) {
XKeyEvent xEvent = new XKeyEvent ();
OS.memmove (xEvent, callData, XKeyEvent.sizeof);
if (xEvent.keycode != 0) {
sendKeyEvent (SWT.KeyDown, xEvent);
} else {
sendIMEKeyEvent (SWT.KeyDown, xEvent);
}
return 0;
}
int processKeyUp (int callData) {
XKeyEvent xEvent = new XKeyEvent ();
OS.memmove (xEvent, callData, XKeyEvent.sizeof);
if (menu != null && xEvent.state == OS.ShiftMask) {
byte [] buffer = new byte [1];
int [] keysym = new int [1];
OS.XLookupString (xEvent, buffer, buffer.length, keysym, null);
if (keysym [0] == OS.XK_F10) {
menu.setVisible (true);
return 0;
}
}
sendKeyEvent (SWT.KeyUp, xEvent);
return 0;
}
int processModify (int callData) {
sendEvent (SWT.Modify);
return 0;
}
int processMouseDown (int callData) {
Display display = getDisplay ();
Shell shell = getShell ();
display.hideToolTip ();
XButtonEvent xEvent = new XButtonEvent ();
OS.memmove (xEvent, callData, XButtonEvent.sizeof);
sendMouseEvent (SWT.MouseDown, xEvent.button, xEvent);
if (xEvent.button == 2 && hooks (SWT.DragDetect)) {
sendEvent (SWT.DragDetect);
}
if (xEvent.button == 3 && menu != null) {
OS.XmProcessTraversal (handle, OS.XmTRAVERSE_CURRENT);
menu.setVisible (true);
}
int clickTime = display.getDoubleClickTime ();
int lastTime = display.lastTime, eventTime = xEvent.time;
int lastButton = display.lastButton, eventButton = xEvent.button;
if (lastButton == eventButton && lastTime != 0 && Math.abs (lastTime - eventTime) <= clickTime) {
sendMouseEvent (SWT.MouseDoubleClick, eventButton, xEvent);
}
display.lastTime = eventTime == 0 ? 1 : eventTime;
display.lastButton = eventButton;
/*
* It is possible that the shell may be
* disposed at this point. If this happens
* don't send the activate and deactivate
* events.
*/
if (!shell.isDisposed ()) {
shell.setActiveControl (this);
}
return 0;
}
int processMouseEnter (int callData) {
XCrossingEvent xEvent = new XCrossingEvent ();
OS.memmove (xEvent, callData, XCrossingEvent.sizeof);
if (xEvent.mode != OS.NotifyNormal) return 0;
if (xEvent.subwindow != 0) return 0;
Event event = new Event ();
event.x = xEvent.x;
event.y = xEvent.y;
postEvent (SWT.MouseEnter, event);
return 0;
}
int processMouseMove (int callData) {
Display display = getDisplay ();
display.addMouseHoverTimeOut (handle);
XMotionEvent xEvent = new XMotionEvent ();
OS.memmove (xEvent, callData, XMotionEvent.sizeof);
sendMouseEvent (SWT.MouseMove, 0, xEvent);
return 0;
}
int processMouseExit (int callData) {
Display display = getDisplay ();
display.removeMouseHoverTimeOut ();
display.hideToolTip ();
XCrossingEvent xEvent = new XCrossingEvent ();
OS.memmove (xEvent, callData, XCrossingEvent.sizeof);
if (xEvent.mode != OS.NotifyNormal) return 0;
if (xEvent.subwindow != 0) return 0;
Event event = new Event ();
event.x = xEvent.x;
event.y = xEvent.y;
postEvent (SWT.MouseExit, event);
return 0;
}
int processMouseHover (int id) {
Display display = getDisplay ();
Event event = new Event ();
Point local = toControl (display.getCursorLocation ());
event.x = local.x; event.y = local.y;
postEvent (SWT.MouseHover, event);
display.showToolTip (handle, toolTipText);
return 0;
}
int processMouseUp (int callData) {
Display display = getDisplay ();
display.hideToolTip ();
XButtonEvent xEvent = new XButtonEvent ();
OS.memmove (xEvent, callData, XButtonEvent.sizeof);
sendMouseEvent (SWT.MouseUp, xEvent.button, xEvent);
return 0;
}
int processPaint (int callData) {
if (!hooks (SWT.Paint)) return 0;
XExposeEvent xEvent = new XExposeEvent ();
OS.memmove (xEvent, callData, XExposeEvent.sizeof);
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) return 0;
Event event = new Event ();
event.count = xEvent.count;
event.time = OS.XtLastTimestampProcessed (xDisplay);
event.x = xEvent.x; event.y = xEvent.y;
event.width = xEvent.width; event.height = xEvent.height;
GC gc = event.gc = new GC (this);
XRectangle rect = new XRectangle ();
rect.x = (short) xEvent.x; rect.y = (short) xEvent.y;
rect.width = (short) xEvent.width; rect.height = (short) xEvent.height;
OS.XSetClipRectangles (xDisplay, gc.handle, 0, 0, rect, 1, OS.Unsorted);
sendEvent (SWT.Paint, event);
if (!gc.isDisposed ()) gc.dispose ();
event.gc = null;
return 0;
}
int processSelection (int callData) {
postEvent (SWT.Selection);
return 0;
}
int processSetFocus (int callData) {
/* Get the focus change event */
XFocusChangeEvent xEvent = new XFocusChangeEvent ();
OS.memmove (xEvent, callData, XFocusChangeEvent.sizeof);
/* Ignore focus changes caused by grabbing and ungrabing */
if (xEvent.mode != OS.NotifyNormal) return 0;
/* Only process focus callbacks between windows */
if (xEvent.detail != OS.NotifyAncestor &&
xEvent.detail != OS.NotifyInferior &&
xEvent.detail != OS.NotifyNonlinear) return 0;
/*
* Ignore focus change events when the window getting or losing
* focus is a menu. Because XmGetFocusWidget() does not answer
* the menu shell (it answers the menu parent), it is necessary
* to use XGetInputFocus() to get the real X focus window.
*/
int xDisplay = xEvent.display;
if (xDisplay == 0) return 0;
int [] unused = new int [1], xWindow = new int [1];
OS.XGetInputFocus (xDisplay, xWindow, unused);
if (xWindow [0] != 0) {
int widget = OS.XtWindowToWidget (xDisplay, xWindow [0]);
if (widget != 0 && OS.XtClass (widget) == OS.XmMenuShellWidgetClass ()) return 0;
}
/* Process the focus change for the widget */
switch (xEvent.type) {
case OS.FocusIn: {
Shell shell = getShell ();
processFocusIn ();
// widget could be disposed at this point
/*
* It is possible that the shell may be
* disposed at this point. If this happens
* don't send the activate and deactivate
* events.
*/
if (!shell.isDisposed ()) {
shell.setActiveControl (this);
}
break;
}
case OS.FocusOut: {
Shell shell = getShell ();
Display display = getDisplay ();
processFocusOut ();
// widget could be disposed at this point
/*
* It is possible that the shell may be
* disposed at this point. If this happens
* don't send the activate and deactivate
* events.
*/
if (!shell.isDisposed ()) {
Control control = display.getFocusControl ();
if (control == null || shell != control.getShell () ) {
shell.setActiveControl (null);
}
}
break;
}
}
return 0;
}
void propagateChildren (boolean enabled) {
propagateWidget (enabled);
}
void propagateWidget (boolean enabled) {
propagateHandle (enabled, handle);
}
void realizeChildren () {
if (!isEnabled ()) propagateWidget (false);
}
/**
* Causes the entire bounds of the receiver to be marked
* as needing to be redrawn. The next time a paint request
* is processed, the control will be completely painted.
*
* @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 #update
*/
public void redraw () {
checkWidget();
redrawWidget (0, 0, 0, 0, false);
}
/**
* Causes the rectangular area of the receiver specified by
* the arguments to be marked as needing to be redrawn.
* The next time a paint request is processed, that area of
* the receiver will be painted. If the <code>all</code> flag
* is <code>true</code>, any children of the receiver which
* intersect with the specified area will also paint their
* intersecting areas. If the <code>all</code> flag is
* <code>false</code>, the children will not be painted.
*
* @param x the x coordinate of the area to draw
* @param y the y coordinate of the area to draw
* @param width the width of the area to draw
* @param height the height of the area to draw
* @param all <code>true</code> if children should redraw, and <code>false</code> otherwise
*
* @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 #update
*/
public void redraw (int x, int y, int width, int height, boolean all) {
checkWidget ();
if (width <= 0 || height <= 0) return;
redrawWidget (x, y, width, height, all);
}
void redrawWidget (int x, int y, int width, int height, boolean all) {
redrawHandle (x, y, width, height, handle);
}
void releaseWidget () {
/*
* Restore the default font for the widget in case the
* application disposes the widget font in the dispose
* callback. If a font is disposed while it is still
* in use in the widget, Motif GP's.
*/
int fontList = defaultFont ();
if (this.fontList != fontList) {
int fontHandle = fontHandle ();
int [] argList2 = {OS.XmNfontList, fontList};
OS.XtSetValues (fontHandle, argList2, argList2.length / 2);
}
super.releaseWidget ();
Display display = getDisplay ();
display.releaseToolTipHandle (handle);
toolTipText = null;
if (menu != null && !menu.isDisposed ()) {
menu.dispose ();
}
menu = null;
OS.XmImUnregister (handle);
parent = null;
layoutData = null;
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control is moved or resized.
*
* @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 ControlListener
* @see #addControlListener
*/
public void removeControlListener (ControlListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Move, listener);
eventTable.unhook (SWT.Resize, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the control gains or loses focus.
*
* @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 FocusListener
* @see #addFocusListener
*/
public void removeFocusListener(FocusListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.FocusIn, listener);
eventTable.unhook(SWT.FocusOut, 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 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);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when keys are pressed and released on the system keyboard.
*
* @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 KeyListener
* @see #addKeyListener
*/
public void removeKeyListener(KeyListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.KeyUp, listener);
eventTable.unhook(SWT.KeyDown, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when mouse buttons are pressed and released.
*
* @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 MouseListener
* @see #addMouseListener
*/
public void removeMouseListener(MouseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.MouseDown, listener);
eventTable.unhook(SWT.MouseUp, listener);
eventTable.unhook(SWT.MouseDoubleClick, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the mouse moves.
*
* @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 MouseMoveListener
* @see #addMouseMoveListener
*/
public void removeMouseMoveListener(MouseMoveListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.MouseMove, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the mouse passes or hovers over controls.
*
* @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 MouseTrackListener
* @see #addMouseTrackListener
*/
public void removeMouseTrackListener(MouseTrackListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.MouseEnter, listener);
eventTable.unhook (SWT.MouseExit, listener);
eventTable.unhook (SWT.MouseHover, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver needs to be painted.
*
* @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 PaintListener
* @see #addPaintListener
*/
public void removePaintListener(PaintListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook(SWT.Paint, listener);
}/**
* Removes the listener from the collection of listeners who will
* be notified when traversal events occur.
*
* @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 TraverseListener
* @see #addTraverseListener
*/
public void removeTraverseListener(TraverseListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Traverse, listener);
}
void sendHelpEvent (int callData) {
Control control = this;
while (control != null) {
if (control.hooks (SWT.Help)) {
control.postEvent (SWT.Help);
return;
}
control = control.parent;
}
}
byte [] sendIMEKeyEvent (int type, XKeyEvent xEvent) {
/*
* Bug in Motif. On Linux only, XmImMbLookupString () does not return
* XBufferOverflow as the status if the buffer is too small. The fix
* is to pass a large buffer.
*/
byte [] buffer = new byte [512];
int [] status = new int [1], unused = new int [1];
int length = OS.XmImMbLookupString (handle, xEvent, buffer, buffer.length, unused, status);
if (status [0] == OS.XBufferOverflow) {
buffer = new byte [length];
length = OS.XmImMbLookupString (handle, xEvent, buffer, length, unused, status);
}
if (length == 0) return null;
/* Convert from MBCS to UNICODE and send the event */
/* Use the character encoding for the default locale */
char [] result = Converter.mbcsToWcs (null, buffer);
int index = 0;
while (index < result.length) {
if (result [index] == 0) break;
Event event = new Event ();
event.time = xEvent.time;
event.character = result [index];
setInputState (event, xEvent);
postEvent (type, event);
index++;
}
return buffer;
}
void sendKeyEvent (int type, XKeyEvent xEvent) {
Event event = new Event ();
event.time = xEvent.time;
setKeyState (event, xEvent);
Control control = this;
if ((state & CANVAS) != 0) {
if ((style & SWT.NO_FOCUS) != 0) {
Display display = getDisplay ();
control = display.getFocusControl ();
}
}
if (control != null) {
control.postEvent (type, event);
}
}
void sendMouseEvent (int type, int button, XInputEvent xEvent) {
Event event = new Event ();
event.time = xEvent.time;
event.button = button;
event.x = xEvent.x; event.y = xEvent.y;
setInputState (event, xEvent);
postEvent (type, event);
}
/**
* Sets the receiver's background color to the color specified
* by the argument, or to the default system color for the control
* if the argument is null.
*
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBackground (Color color) {
checkWidget();
if (color == null) {
setBackgroundPixel (defaultBackground ());
} else {
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
setBackgroundPixel (color.handle.pixel);
}
}
void setBackgroundPixel (int pixel) {
int [] argList = {OS.XmNforeground, 0, OS.XmNhighlightColor, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
OS.XmChangeColor (handle, pixel);
OS.XtSetValues (handle, argList, argList.length / 2);
}
/**
* Sets the receiver's size and location to the rectangular
* area specified by the arguments. The <code>x</code> and
* <code>y</code> arguments are relative to the receiver's
* parent (or its display if its parent is null).
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param x the new x coordinate for the receiver
* @param y the new y coordinate for the receiver
* @param width the new width for the receiver
* @param height the new height for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBounds (int x, int y, int width, int height) {
checkWidget();
/*
* Feature in Motif. Motif will not allow a window
* to have a zero width or zero height. The fix is
* to ensure these values are never zero.
*/
int topHandle = topHandle ();
int [] argList = {
OS.XmNx, 0, /* 1 */
OS.XmNy, 0, /* 3 */
OS.XmNwidth, 0, /* 5 */
OS.XmNheight, 0, /* 7 */
OS.XmNborderWidth, 0, /* 9 */
};
OS.XtGetValues (topHandle, argList, argList.length / 2);
int newWidth = Math.max (width - (argList [9] * 2), 1);
int newHeight = Math.max (height - (argList [9] * 2), 1);
boolean sameOrigin = (x == (short) argList [1]) && (y == (short) argList [3]);
boolean sameExtent = (newWidth == argList [5]) && (newHeight == argList [7]);
if (sameOrigin && sameExtent) return;
OS.XtConfigureWidget (topHandle, x, y, newWidth, newHeight, argList [9]);
if (!sameOrigin) sendEvent (SWT.Move);
if (!sameExtent) sendEvent (SWT.Resize);
}
/**
* Sets the receiver's size and location to the rectangular
* area specified by the argument. The <code>x</code> and
* <code>y</code> fields of the rectangle are relative to
* the receiver's parent (or its display if its parent is null).
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param rect the new bounds for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setBounds (Rectangle rect) {
if (rect == null) error (SWT.ERROR_NULL_ARGUMENT);
setBounds (rect.x, rect.y, rect.width, rect.height);
}
/**
* If the argument is <code>true</code>, causes the receiver to have
* all mouse events delivered to it until the method is called with
* <code>false</code> as the argument.
*
* @param capture <code>true</code> to capture the mouse, and <code>false</code> to release it
*
* @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 setCapture (boolean capture) {
checkWidget();
int display = OS.XtDisplay (handle);
if (display == 0) return;
if (capture) {
int window = OS.XtWindow (handle);
if (window == 0) return;
OS.XGrabPointer (
display,
window,
0,
OS.ButtonPressMask | OS.ButtonReleaseMask | OS.PointerMotionMask,
OS.GrabModeAsync,
OS.GrabModeAsync,
OS.None,
OS.None,
OS.CurrentTime);
} else {
OS.XUngrabPointer (display, OS.CurrentTime);
}
}
/**
* Sets the receiver's cursor to the cursor specified by the
* argument, or to the default cursor for that kind of control
* if the argument is null.
* <p>
* When the mouse pointer passes over a control its appearance
* is changed to match the control's cursor.
* </p>
*
* @param cursor the new cursor (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setCursor (Cursor cursor) {
checkWidget();
int display = OS.XtDisplay (handle);
if (display == 0) return;
int window = OS.XtWindow (handle);
if (window == 0) {
if (!OS.XtIsRealized (handle)) getShell ().realizeWidget ();
window = OS.XtWindow (handle);
if (window == 0) return;
}
if (cursor == null) {
OS.XUndefineCursor (display, window);
} else {
if (cursor.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
int xCursor = cursor.handle;
OS.XDefineCursor (display, window, xCursor);
OS.XFlush (display);
}
}
/**
* Enables the receiver if the argument is <code>true</code>,
* and disables it otherwise. A disabled control 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();
enableWidget (enabled);
if (!enabled || (isEnabled () && enabled)) {
propagateChildren (enabled);
}
}
/**
* Causes the receiver to have the <em>keyboard focus</em>,
* such that all keyboard events will be delivered to it.
*
* @return <code>true</code> if the control got focus, and <code>false</code> if it was unable to.
*
* @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 #forceFocus
*/
public boolean setFocus () {
checkWidget();
Decorations shell = menuShell ();
shell.setSavedFocus (this);
shell.bringToTop ();
return OS.XmProcessTraversal (handle, OS.XmTRAVERSE_CURRENT);
}
/**
* Sets the font that the receiver will use to paint textual information
* to the font specified by the argument, or to the default font for that
* kind of control if the argument is null.
*
* @param font the new font (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setFont (Font font) {
checkWidget();
int fontList = 0;
if (font != null) {
if (font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
fontList = font.handle;
}
if (fontList == 0) fontList = defaultFont ();
setFontList (fontList);
}
void setFontList (int fontList) {
this.fontList = fontList;
/*
* Feature in Motif. Setting the font in a widget
* can cause the widget to automatically resize in
* the OS. This behavior is unwanted. The fix is
* to force the widget to resize to original size
* after every font change.
*/
int [] argList1 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
/* Set the font list */
int fontHandle = fontHandle ();
int [] argList2 = {OS.XmNfontList, fontList};
OS.XtSetValues (fontHandle, argList2, argList2.length / 2);
/* Restore the widget size */
OS.XtSetValues (handle, argList1, argList1.length / 2);
}
/**
* Sets the receiver's foreground color to the color specified
* by the argument, or to the default system color for the control
* if the argument is null.
*
* @param color the new color (or null)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setForeground (Color color) {
checkWidget();
if (color == null) {
setForegroundPixel (defaultForeground ());
} else {
if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
setForegroundPixel (color.handle.pixel);
}
}
void setForegroundPixel (int pixel) {
int [] argList = {OS.XmNforeground, pixel};
OS.XtSetValues (handle, argList, argList.length / 2);
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) return;
int xWindow = OS.XtWindow (handle);
if (xWindow == 0) return;
OS.XClearArea (xDisplay, xWindow, 0, 0, 0, 0, true);
}
void setGrabCursor (int cursor) {
/* | window attributes eventMask grabMask |
handle xtIsWidget ifFalse: [^self].
(window := handle xtWindow) isNull ifTrue: [^self].
attributes := OSXWindowAttributesPtr new.
XDisplay
xGetWindowAttributes: window
windowAttributesReturn: attributes.
grabMask := ((((((((((ButtonPressMask bitOr: ButtonReleaseMask) bitOr:
EnterWindowMask) bitOr: LeaveWindowMask) bitOr: PointerMotionMask) bitOr:
PointerMotionHintMask) bitOr: Button1MotionMask) bitOr: Button2MotionMask) bitOr:
Button3MotionMask) bitOr: Button4MotionMask) bitOr: Button5MotionMask) bitOr: ButtonMotionMask.
eventMask := attributes yourEventMask bitAnd: grabMask.
XDisplay xChangeActivePointerGrab: eventMask cursor: aCursor time: CurrentTime.
*/
}
/**
* Sets the layout data associated with the receiver to the argument.
*
* @param layoutData the new layout data for the receiver.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLayoutData (Object layoutData) {
checkWidget();
this.layoutData = layoutData;
}
/**
* Sets the receiver's location to the point specified by
* the arguments which are relative to the receiver's
* parent (or its display if its parent is null).
*
* @param x the new x coordinate for the receiver
* @param y the new y coordinate for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLocation (int x, int y) {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNx, 0, OS.XmNy, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
boolean sameOrigin = (x == (short) argList [1]) && (y == (short) argList [3]);
if (sameOrigin) return;
OS.XtMoveWidget (topHandle, x, y);
if (!sameOrigin) sendEvent (SWT.Move);
}
/**
* Sets the receiver's location to the point specified by
* the argument which is relative to the receiver's
* parent (or its display if its parent is null).
*
* @param location the new location for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setLocation (Point location) {
if (location == null) error (SWT.ERROR_NULL_ARGUMENT);
setLocation (location.x, location.y);
}
/**
* Sets the receiver's pop up menu to the argument.
* All controls may optionally have a pop up
* menu that is displayed when the user requests one for
* the control. The sequence of key strokes, button presses
* and/or button releases that are used to request a pop up
* menu is platform specific.
*
* @param menu the new pop up menu
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_MENU_NOT_POP_UP - the menu is not a pop up menu</li>
* <li>ERROR_INVALID_PARENT - if the menu is not in the same widget tree</li>
* <li>ERROR_INVALID_ARGUMENT - if the menu has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setMenu (Menu menu) {
checkWidget();
if (menu != null) {
if (menu.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
if ((menu.style & SWT.POP_UP) == 0) {
error (SWT.ERROR_MENU_NOT_POP_UP);
}
if (menu.parent != menuShell ()) {
error (SWT.ERROR_INVALID_PARENT);
}
}
this.menu = menu;
}
/**
* Changes the parent of the widget to be the one provided if
* the underlying operating system supports this feature.
* Answers <code>true</code> if the parent is successfully changed.
*
* @param parent the new parent for the control.
* @return <code>true</code> if the parent is changed and <code>false</code> otherwise.
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
* </ul>
* @exception SWTError <ul>
* <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
* <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
* </ul>
*/
public boolean setParent (Composite parent) {
checkWidget();
if (parent.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
return false;
}
/**
* If the argument is <code>false</code>, causes subsequent drawing
* operations in the receiver to be ignored. No drawing of any kind
* can occur in the receiver until the flag is set to true.
* Graphics operations that occurred while the flag was
* <code>false</code> are lost. When the flag is set to <code>true</code>,
* the entire widget is marked as needing to be redrawn.
* <p>
* Note: This operation is a hint and may not be supported on some
* platforms or for some widgets.
* </p>
*
* @param redraw the new redraw 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 #redraw
* @see #update
*/
public void setRedraw (boolean redraw) {
checkWidget();
}
boolean setTabGroupFocus () {
return setTabItemFocus ();
}
boolean setTabItemFocus () {
if (!isShowing ()) return false;
return setFocus ();
}
/**
* Sets the receiver's size to the point specified by the arguments.
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause that
* value to be set to zero instead.
* </p>
*
* @param width the new width for the receiver
* @param height the new height for the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setSize (int width, int height) {
checkWidget();
/*
* Feature in Motif. Motif will not allow a window
* to have a zero width or zero height. The fix is
* to ensure these values are never zero.
*/
int topHandle = topHandle ();
int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
int newWidth = Math.max (width - (argList [5] * 2), 1);
int newHeight = Math.max (height - (argList [5] * 2), 1);
boolean sameExtent = (newWidth == argList [1]) && (newHeight == argList [3]);
if (sameExtent) return;
OS.XtResizeWidget (topHandle, newWidth, newHeight, argList [5]);
if (!sameExtent) sendEvent (SWT.Resize);
}
/**
* Sets the receiver's size to the point specified by the argument.
* <p>
* Note: Attempting to set the width or height of the
* receiver to a negative number will cause them to be
* set to zero instead.
* </p>
*
* @param size the new size for the receiver
* @param height the new height for the receiver
*
* @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 setSize (Point size) {
if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
setSize (size.x, size.y);
}
/**
* Sets the receiver's tool tip text to the argument, which
* may be null indicating that no tool tip text should be shown.
*
* @param string the new tool tip text (or null)
*
* @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 setToolTipText (String string) {
checkWidget();
Display display = getDisplay ();
display.setToolTipText (handle, toolTipText = string);
}
/**
* Marks the receiver 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>
*/
public void setVisible (boolean visible) {
checkWidget();
int topHandle = topHandle ();
int [] argList = {OS.XmNmappedWhenManaged, 0};
OS.XtGetValues (topHandle, argList, argList.length / 2);
if ((argList [1] != 0) == visible) return;
OS.XtSetMappedWhenManaged (topHandle, visible);
sendEvent (visible ? SWT.Show : SWT.Hide);
}
void setZOrder (Control control, boolean above) {
/*
* Feature in Xt. We cannot use XtMakeGeometryRequest() to
* restack widgets because this call can fail under certain
* conditions. For example, XtMakeGeometryRequest() answers
* XtGeometryNo when attempting to bring a child widget that
* is larger than the parent widget to the front. The fix
* is to use X calls instead.
*/
int topHandle1 = topHandle ();
int display = OS.XtDisplay (topHandle1);
if (display == 0) return;
if (!OS.XtIsRealized (topHandle1)) {
Shell shell = this.getShell ();
shell.realizeWidget ();
}
int window1 = OS.XtWindow (topHandle1);
if (window1 == 0) return;
if (control == null) {
if (above) {
OS.XRaiseWindow (display, window1);
if (parent != null) parent.moveAbove (topHandle1, 0);
} else {
OS.XLowerWindow (display, window1);
if (parent != null) parent.moveBelow (topHandle1, 0);
}
return;
}
int topHandle2 = control.topHandle ();
if (display != OS.XtDisplay (topHandle2)) return;
if (!OS.XtIsRealized (topHandle2)) {
Shell shell = control.getShell ();
shell.realizeWidget ();
}
int window2 = OS.XtWindow (topHandle2);
if (window2 == 0) return;
XWindowChanges struct = new XWindowChanges ();
struct.sibling = window2;
struct.stack_mode = above ? OS.Above : OS.Below;
/*
* Feature in X. If the receiver is a top level, XConfigureWindow ()
* will fail (with a BadMatch error) for top level shells because top
* level shells are reparented by the window manager and do not share
* the same X window parent. This is the correct behavior but it is
* unexpected. The fix is to use XReconfigureWMWindow () instead.
* When the receiver is not a top level shell, XReconfigureWMWindow ()
* behaves the same as XConfigureWindow ().
*/
int screen = OS.XDefaultScreen (display);
int flags = OS.CWStackMode | OS.CWSibling;
OS.XReconfigureWMWindow (display, window1, screen, flags, struct);
if (above) {
if (parent != null) parent.moveAbove (topHandle1, topHandle2);
} else {
if (parent != null) parent.moveBelow (topHandle1, topHandle2);
}
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in display relative coordinates,
* to coordinates relative to the receiver.
* <p>
* @param point the point to be translated (must not be null)
*
* @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 Point toControl (Point point) {
checkWidget();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
short [] root_x = new short [1], root_y = new short [1];
OS.XtTranslateCoords (handle, (short) 0, (short) 0, root_x, root_y);
return new Point (point.x - root_x [0], point.y - root_y [0]);
}
/**
* Returns a point which is the result of converting the
* argument, which is specified in coordinates relative to
* the receiver, to display relative coordinates.
* <p>
* @param point the point to be translated (must not be null)
*
* @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 Point toDisplay (Point point) {
checkWidget();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
short [] root_x = new short [1], root_y = new short [1];
OS.XtTranslateCoords (handle, (short) point.x, (short) point.y, root_x, root_y);
return new Point (root_x [0], root_y [0]);
}
boolean translateMnemonic (char key, XKeyEvent xEvent) {
if (!isVisible () || !isEnabled ()) return false;
Event event = new Event();
event.doit = mnemonicMatch (key);
event.detail = SWT.TRAVERSE_MNEMONIC;
event.time = xEvent.time;
setKeyState (event, xEvent);
return traverse (event);
}
boolean translateMnemonic (int key, XKeyEvent xEvent) {
if (xEvent.state == 0) {
int code = traversalCode (key, xEvent);
if ((code & SWT.TRAVERSE_MNEMONIC) == 0) return false;
} else {
if (xEvent.state != OS.Mod1Mask) return false;
}
Decorations shell = menuShell ();
if (shell.isVisible () && shell.isEnabled ()) {
char ch = mbcsToWcs (key);
return ch != 0 && shell.translateMnemonic (ch, xEvent);
}
return false;
}
boolean translateTraversal (int key, XKeyEvent xEvent) {
int detail = SWT.TRAVERSE_NONE;
int code = traversalCode (key, xEvent);
boolean all = false;
switch (key) {
case OS.XK_Escape:
case OS.XK_Cancel: {
Shell shell = getShell ();
if (!shell.isVisible () || !shell.isEnabled ()) return false;
detail = SWT.TRAVERSE_ESCAPE;
break;
}
case OS.XK_Return: {
Button button = menuShell ().getDefaultButton ();
if (button == null || button.isDisposed ()) return false;
if (!button.isVisible () || !button.isEnabled ()) return false;
detail = SWT.TRAVERSE_RETURN;
break;
}
case OS.XK_Tab: {
boolean next = (xEvent.state & OS.ShiftMask) == 0;
/*
* NOTE: This code emulates a bug/feature on Windows where
* the default is that that Shift+Tab and Ctrl+Tab traverses
* instead of going to the widget. StyledText currently
* relies on this behavior.
*/
switch (xEvent.state) {
case OS.ControlMask:
case OS.ShiftMask:
code |= SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_TAB_NEXT;
}
detail = next ? SWT.TRAVERSE_TAB_NEXT : SWT.TRAVERSE_TAB_PREVIOUS;
break;
}
case OS.XK_Up:
case OS.XK_Left:
case OS.XK_Down:
case OS.XK_Right: {
boolean next = key == OS.XK_Down || key == OS.XK_Right;
detail = next ? SWT.TRAVERSE_ARROW_NEXT : SWT.TRAVERSE_ARROW_PREVIOUS;
break;
}
case OS.XK_Page_Up:
case OS.XK_Page_Down: {
all = true;
if ((xEvent.state & OS.ControlMask) == 0) return false;
detail = key == OS.XK_Page_Down ? SWT.TRAVERSE_PAGE_NEXT : SWT.TRAVERSE_PAGE_PREVIOUS;
break;
}
default:
return false;
}
Event event = new Event ();
event.doit = (code & detail) != 0;
event.detail = detail;
event.time = xEvent.time;
setKeyState (event, xEvent);
Shell shell = getShell ();
Control control = this;
do {
if (control.traverse (event)) return true;
if (control == shell) return false;
control = control.parent;
} while (all && control != null);
return false;
}
int traversalCode (int key, XKeyEvent xEvent) {
int [] argList = new int [] {OS.XmNtraversalOn, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
if (argList [1] == 0) return 0;
int code = SWT.TRAVERSE_RETURN | SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS;
Shell shell = getShell ();
if (shell.parent != null) code |= SWT.TRAVERSE_ESCAPE;
if (getNavigationType () == OS.XmNONE) {
code |= SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS;
}
return code;
}
boolean traverse (Event event) {
sendEvent (SWT.Traverse, event);
if (isDisposed ()) return false;
if (!event.doit) return false;
switch (event.detail) {
case SWT.TRAVERSE_NONE: return true;
case SWT.TRAVERSE_ESCAPE: return traverseEscape ();
case SWT.TRAVERSE_RETURN: return traverseReturn ();
case SWT.TRAVERSE_TAB_NEXT: return traverseGroup (true);
case SWT.TRAVERSE_TAB_PREVIOUS: return traverseGroup (false);
case SWT.TRAVERSE_ARROW_NEXT: return traverseItem (true);
case SWT.TRAVERSE_ARROW_PREVIOUS: return traverseItem (false);
case SWT.TRAVERSE_MNEMONIC: return traverseMnemonic (event.character);
case SWT.TRAVERSE_PAGE_NEXT: return traversePage (true);
case SWT.TRAVERSE_PAGE_PREVIOUS: return traversePage (false);
}
return false;
}
/**
* Based on the argument, perform one of the expected platform
* traversal action. The argument should be one of the constants:
* <code>SWT.TRAVERSE_ESCAPE</code>, <code>SWT.TRAVERSE_RETURN</code>,
* <code>SWT.TRAVERSE_TAB_NEXT</code>, <code>SWT.TRAVERSE_TAB_PREVIOUS</code>,
* <code>SWT.TRAVERSE_ARROW_NEXT</code> and <code>SWT.TRAVERSE_ARROW_PREVIOUS</code>.
*
* @param traversal the type of traversal
* @return true if the traversal succeeded
*
* @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 traverse (int traversal) {
checkWidget();
if (!isFocusControl () && !setFocus ()) return false;
Event event = new Event ();
event.doit = true;
event.detail = traversal;
return traverse (event);
}
boolean traverseEscape () {
Shell shell = getShell ();
if (shell.parent == null) return false;
if (!shell.isVisible () || !shell.isEnabled ()) return false;
shell.close ();
return true;
}
boolean traverseGroup (boolean next) {
Control root = computeTabRoot ();
Control group = computeTabGroup ();
Control [] list = root.computeTabList ();
int length = list.length;
int index = 0;
while (index < length) {
if (list [index] == group) break;
index++;
}
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in focus in
* or out events. Ensure that a disposed widget is
* not accessed.
*/
if (index == length) return false;
int start = index, offset = (next) ? 1 : -1;
while ((index = ((index + offset + length) % length)) != start) {
Control control = list [index];
if (!control.isDisposed () && control.setTabGroupFocus ()) {
if (!isDisposed () && !isFocusControl ()) return true;
}
}
if (group.isDisposed ()) return false;
return group.setTabGroupFocus ();
}
boolean traverseItem (boolean next) {
Control [] children = parent._getChildren ();
int length = children.length;
int index = 0;
while (index < length) {
if (children [index] == this) break;
index++;
}
/*
* It is possible (but unlikely), that application
* code could have disposed the widget in focus in
* or out events. Ensure that a disposed widget is
* not accessed.
*/
int start = index, offset = (next) ? 1 : -1;
while ((index = (index + offset + length) % length) != start) {
Control child = children [index];
if (!child.isDisposed () && child.isTabItem ()) {
if (child.setTabItemFocus ()) return true;
}
}
return false;
}
boolean traversePage (boolean next) {
return false;
}
boolean traverseMnemonic (char key) {
return mnemonicHit (key);
}
boolean traverseReturn () {
Button button = menuShell ().getDefaultButton ();
if (button == null || button.isDisposed ()) return false;
if (!button.isVisible () || !button.isEnabled ()) return false;
button.click ();
return true;
}
/**
* Forces all outstanding paint requests for the widget tree
* to be processed before this method returns.
*
* @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 #redraw
*/
public void update () {
checkWidget();
int display = OS.XtDisplay (handle);
if (display == 0) return;
int window = OS.XtWindow (handle);
if (window == 0) return;
XAnyEvent event = new XAnyEvent ();
OS.XSync (display, false); OS.XSync (display, false);
while (OS.XCheckWindowEvent (display, window, OS.ExposureMask, event)) {
OS.XtDispatchEvent (event);
}
}
}