| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.internal.Compatibility; |
| import org.eclipse.swt.internal.carbon.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object that |
| * issues notification when pressed and released. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>ARROW, CHECK, PUSH, RADIO, TOGGLE, FLAT</dd> |
| * <dd>UP, DOWN, LEFT, RIGHT, CENTER</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles ARROW, CHECK, PUSH, RADIO, and TOGGLE |
| * may be specified. |
| * </p><p> |
| * Note: Only one of the styles LEFT, RIGHT, and CENTER may be specified. |
| * </p><p> |
| * Note: Only one of the styles UP, DOWN, LEFT, and RIGHT may be specified |
| * when the ARROW style is specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#button">Button snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Button extends Control { |
| String text = ""; |
| Image image; |
| int cIcon; |
| boolean isImage, grayed; |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#ARROW |
| * @see SWT#CHECK |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#TOGGLE |
| * @see SWT#FLAT |
| * @see SWT#UP |
| * @see SWT#DOWN |
| * @see SWT#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#CENTER |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Button (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the control is selected by the user, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the control is selected by the user. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * <p> |
| * When the <code>SWT.RADIO</code> style bit is set, the <code>widgetSelected</code> method is |
| * also called when the receiver loses selection because another item in the same radio group |
| * was selected by the user. During <code>widgetSelected</code> the application can use |
| * <code>getSelection()</code> to determine the current selected state of the receiver. |
| * </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); |
| } |
| |
| static int checkStyle (int style) { |
| style = checkBits (style, SWT.PUSH, SWT.ARROW, SWT.CHECK, SWT.RADIO, SWT.TOGGLE, 0); |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) { |
| return checkBits (style, SWT.CENTER, SWT.LEFT, SWT.RIGHT, 0, 0, 0); |
| } |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| return checkBits (style, SWT.LEFT, SWT.RIGHT, SWT.CENTER, 0, 0, 0); |
| } |
| if ((style & SWT.ARROW) != 0) { |
| style |= SWT.NO_FOCUS; |
| return checkBits (style, SWT.UP, SWT.DOWN, SWT.LEFT, SWT.RIGHT, 0, 0); |
| } |
| return style; |
| } |
| |
| void click () { |
| sendSelectionEvent (SWT.Selection); |
| } |
| |
| int callPaintEventHandler (int control, int damageRgn, int visibleRgn, int theEvent, int nextHandler) { |
| int [] context = null; |
| if ((style & SWT.ARROW) != 0) { |
| boolean invert = false; |
| if (OS.VERSION == 0x1050) { |
| invert = (style & SWT.UP) != 0 || (style & SWT.LEFT) != 0; |
| } else { |
| invert = (style & SWT.UP) != 0; |
| } |
| if (invert) { |
| context = new int [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamCGContextRef, OS.typeCGContextRef, null, 4, null, context); |
| OS.CGContextSaveGState (context[0]); |
| CGRect rect = new CGRect(); |
| OS.HIViewGetBounds (handle, rect); |
| OS.CGContextRotateCTM (context[0], (float)Compatibility.PI); |
| OS.CGContextTranslateCTM (context[0], -rect.width, -rect.height); |
| } |
| } |
| int result = super.callPaintEventHandler (control, damageRgn, visibleRgn, theEvent, nextHandler); |
| if (context != null) OS.CGContextRestoreGState (context[0]); |
| return result; |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| // NEEDS WORK - empty string |
| if ((style & SWT.ARROW) != 0) { |
| int [] outMetric = new int [1]; |
| OS.GetThemeMetric (OS.kThemeMetricDisclosureTriangleHeight, outMetric); |
| int width = outMetric [0], height = outMetric [0]; |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (width, height); |
| } |
| |
| int width = 0, height = 0; |
| |
| if (isImage && image != null) { |
| Rectangle bounds = image.getBounds (); |
| width = bounds.width; |
| height = bounds.height; |
| } |
| int [] ptr = new int [1]; |
| OS.CopyControlTitleAsCFString (handle, ptr); |
| if (ptr [0] != 0) { |
| Point size = textExtent (ptr [0], 0); |
| width += size.x; |
| height = Math.max (height, size.y); |
| OS.CFRelease (ptr [0]); |
| if (image != null && isImage) width += 3; |
| } else { |
| if (image == null) { |
| width = DEFAULT_WIDTH; |
| height = DEFAULT_HEIGHT; |
| } |
| } |
| |
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) { |
| int [] outMetric = new int [1]; |
| int metric = ((style & SWT.CHECK) != 0) ? OS.kThemeMetricCheckBoxWidth : OS.kThemeMetricRadioButtonWidth; |
| OS.GetThemeMetric (metric, outMetric); |
| width += outMetric [0] + 3; // +3 for gap between button and text/image |
| height = Math.max (outMetric [0], height); |
| } else { |
| if ((style & SWT.FLAT) != 0 || (style & SWT.TOGGLE) != 0) { |
| width += 8; |
| height += 8; |
| } else { |
| width += 28; |
| int [] outMetric = new int [1]; |
| OS.GetThemeMetric (OS.kThemeMetricPushButtonHeight, outMetric); |
| height = Math.max (height, outMetric [0]); |
| } |
| } |
| |
| Rect inset = getInset (); |
| width += inset.left + inset.right; |
| height += inset.top + inset.bottom; |
| |
| /* |
| * Feature in Mac OS X. Setting the width of a bevel button |
| * widget to less than 20 will fail. This means you can not |
| * make a button very small. By forcing the width to be greater |
| * than or equal to 20, the height of the button can be made |
| * very small, even 0. |
| */ |
| width = Math.max(20, width); |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (width, height); |
| } |
| |
| void createHandle () { |
| if ((style & SWT.PUSH) == 0) state |= THEME_BACKGROUND; |
| int [] outControl = new int [1]; |
| int window = OS.GetControlOwner (parent.handle); |
| |
| if ((style & SWT.ARROW) != 0) { |
| int orientation = OS.kThemeDisclosureRight; |
| if ((style & SWT.UP) != 0) orientation = OS.kThemeDisclosureDown; |
| if ((style & SWT.DOWN) != 0) orientation = OS.kThemeDisclosureDown; |
| if ((style & SWT.LEFT) != 0) orientation = OS.kThemeDisclosureLeft; |
| OS.CreateBevelButtonControl(window, null, 0, (short)0, (short)OS.kControlBehaviorPushbutton, 0, (short)0, (short)0, (short)0, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonKindTag, 2, new short [] {(short)(OS.kThemeDisclosureButton)}); |
| OS.SetControl32BitMaximum (handle, 2); |
| OS.SetControl32BitValue (handle, orientation); |
| } |
| |
| if ((style & SWT.CHECK) != 0) { |
| //OS.CreateCheckBoxControl (window, null, 0, 0 /*initially off*/, true, outControl); |
| OS.CreateBevelButtonControl(window, null, 0, (short)0, (short)OS.kControlBehaviorToggles, 0, (short)0, (short)0, (short)0, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonKindTag, 2, new short [] {(short)OS.kThemeCheckBox}); |
| } |
| |
| if ((style & SWT.RADIO) != 0) { |
| //OS.CreateRadioButtonControl(window, null, 0, 0 /*initially off*/, true, outControl); |
| OS.CreateBevelButtonControl(window, null, 0, (short)0, (short)OS.kControlBehaviorToggles, 0, (short)0, (short)0, (short)0, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonKindTag, 2, new short [] {(short)OS.kThemeRadioButton}); |
| } |
| |
| if ((style & SWT.TOGGLE) != 0) { |
| OS.CreateBevelButtonControl(window, null, 0, (short)OS.kControlBevelButtonNormalBevel, (short)OS.kControlBehaviorToggles, 0, (short)0, (short)0, (short)0, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| if ((style & SWT.FLAT) == 0 ) { |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonKindTag, 2, new short [] {(short)OS.kThemeRoundedBevelButton}); |
| } |
| } |
| |
| if ((style & SWT.PUSH) != 0) { |
| if ((style & SWT.FLAT) != 0) { |
| OS.CreateBevelButtonControl(window, null, 0, (short)2, (short)OS.kControlBehaviorPushbutton, 0, (short)0, (short)0, (short)0, outControl); |
| } else { |
| OS.CreatePushButtonControl (window, null, 0, outControl); |
| //OS.CreateBevelButtonControl(window, null, 0, (short)2, (short)OS.kControlBehaviorPushbutton, 0, (short)0, (short)0, (short)0, outControl); |
| } |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| if ((style & SWT.FLAT) == 0 ) { |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonKindTag, 2, new short [] {(short)OS.kThemePushButton}); |
| } |
| } |
| |
| ControlFontStyleRec fontRec = new ControlFontStyleRec(); |
| fontRec.flags = (short) OS.kControlUseThemeFontIDMask; |
| fontRec.font = (short) defaultThemeFont (); |
| OS.SetControlFontStyle (handle, fontRec); |
| |
| if ((style & SWT.ARROW) != 0) return; |
| _setAlignment (style & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)); |
| } |
| |
| int defaultThemeFont () { |
| if (display.smallFonts) return OS.kThemeSmallSystemFont; |
| return OS.kThemePushButtonFont; |
| } |
| |
| void drawWidget (int control, int context, int damageRgn, int visibleRgn, int theEvent) { |
| if (OS.VERSION < 0x1040 && isImage && image != null && (style & SWT.PUSH) != 0 && (style & SWT.FLAT) == 0) { |
| Rect bounds = new Rect(), content = new Rect(); |
| OS.GetControlBounds (handle, bounds); |
| ThemeButtonDrawInfo drawInfo = new ThemeButtonDrawInfo(); |
| if (OS.IsControlEnabled (handle)) { |
| drawInfo.state = OS.IsControlActive (handle) ? OS.kThemeStateActive : OS.kThemeStateInactive; |
| } else { |
| drawInfo.state = OS.IsControlActive (handle) ? OS.kThemeStateUnavailable : OS.kThemeStateUnavailableInactive; |
| } |
| drawInfo.adornment = OS.kThemeAdornmentDefault; |
| OS.GetThemeButtonContentBounds (bounds, OS.kThemePushButton, drawInfo, content); |
| int width = image == null ? 0 : OS.CGImageGetWidth (image.handle); |
| int height = image == null ? 0 : OS.CGImageGetHeight (image.handle); |
| int x = (bounds.right - bounds.left - width) / 2; |
| int y = (content.bottom - content.top - height) / 2; |
| GCData data = new GCData (); |
| data.paintEvent = theEvent; |
| data.visibleRgn = visibleRgn; |
| GC gc = GC.carbon_new (this, data); |
| gc.drawImage (image, x, y); |
| gc.dispose (); |
| } |
| super.drawWidget (control, context, damageRgn, visibleRgn, theEvent); |
| } |
| |
| /** |
| * Returns a value which describes the position of the |
| * text or image in the receiver. The value will be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the alignment will indicate the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @return the alignment |
| * |
| * @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 getAlignment () { |
| checkWidget (); |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & SWT.UP) != 0) return SWT.UP; |
| if ((style & SWT.DOWN) != 0) return SWT.DOWN; |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.UP; |
| } |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.CENTER) != 0) return SWT.CENTER; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.LEFT; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is grayed, |
| * and false otherwise. When the widget does not have |
| * the <code>CHECK</code> style, return false. |
| * |
| * @return the grayed state of the checkbox |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public boolean getGrayed () { |
| checkWidget(); |
| if ((style & SWT.CHECK) == 0) return false; |
| return grayed; |
| } |
| |
| /** |
| * Returns the receiver's image if it has one, or null |
| * if it does not. |
| * |
| * @return the receiver's image |
| * |
| * @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 Image getImage () { |
| checkWidget(); |
| return image; |
| } |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * 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. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. If the receiver is of any other type, |
| * this method returns false. |
| * |
| * @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.GetControl32BitValue(handle) != 0; |
| } |
| |
| /** |
| * Returns the receiver's text, which will be an empty |
| * string if it has never been set or if the receiver is |
| * an <code>ARROW</code> button. |
| * |
| * @return the receiver's text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getText () { |
| checkWidget (); |
| return text; |
| } |
| |
| Rect getInset () { |
| if ((style & SWT.PUSH) == 0) return super.getInset(); |
| return display.buttonInset; |
| } |
| |
| boolean isDescribedByLabel () { |
| return false; |
| } |
| |
| int kEventAccessibleGetNamedAttribute (int nextHandler, int theEvent, int userData) { |
| int code = OS.eventNotHandledErr; |
| if ((style & SWT.RADIO) != 0) { |
| int [] stringRef = new int [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamAccessibleAttributeName, OS.typeCFStringRef, null, 4, null, stringRef); |
| int length = 0; |
| if (stringRef [0] != 0) length = OS.CFStringGetLength (stringRef [0]); |
| char [] buffer = new char [length]; |
| CFRange range = new CFRange (); |
| range.length = length; |
| OS.CFStringGetCharacters (stringRef [0], range, buffer); |
| String attributeName = new String(buffer); |
| if (attributeName.equals (OS.kAXRoleAttribute) || attributeName.equals (OS.kAXRoleDescriptionAttribute)) { |
| String roleText = OS.kAXRadioButtonRole; |
| buffer = new char [roleText.length ()]; |
| roleText.getChars (0, buffer.length, buffer, 0); |
| stringRef [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (stringRef [0] != 0) { |
| if (attributeName.equals (OS.kAXRoleAttribute)) { |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, stringRef); |
| } else { // kAXRoleDescriptionAttribute |
| int stringRef2 = OS.HICopyAccessibilityRoleDescription (stringRef [0], 0); |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, new int [] {stringRef2}); |
| OS.CFRelease(stringRef2); |
| } |
| OS.CFRelease(stringRef [0]); |
| code = OS.noErr; |
| } |
| } |
| } |
| if (accessible != null) { |
| code = accessible.internal_kEventAccessibleGetNamedAttribute (nextHandler, theEvent, code); |
| } |
| return code; |
| } |
| |
| int kEventControlHit (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventControlHit (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| if ((style & SWT.RADIO) != 0) { |
| if ((parent.getStyle () & SWT.NO_RADIO_GROUP) == 0) { |
| selectRadio (); |
| } |
| } else { |
| if ((style & SWT.CHECK) != 0) { |
| if (grayed) { |
| switch (OS.GetControl32BitValue (handle)) { |
| case 0: |
| OS.SetControl32BitMaximum (handle, 2); |
| OS.SetControl32BitValue (handle, 2); |
| break; |
| case 1: |
| case 2: |
| OS.SetControl32BitMaximum (handle, 0); |
| OS.SetControl32BitValue (handle, 0); |
| break; |
| } |
| } |
| } |
| } |
| sendSelectionEvent (SWT.Selection); |
| return OS.eventNotHandledErr; |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (cIcon != 0) { |
| destroyCIcon (cIcon); |
| cIcon = 0; |
| } |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected by the user. |
| * |
| * @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 () { |
| /* |
| * This code is intentionally commented. When two groups |
| * of radio buttons with the same parent are separated by |
| * another control, the correct behavior should be that |
| * the two groups act independently. This is consistent |
| * with radio tool and menu items. The commented code |
| * implements this behavior. |
| */ |
| // int index = 0; |
| // Control [] children = parent._getChildren (); |
| // while (index < children.length && children [index] != this) index++; |
| // int i = index - 1; |
| // while (i >= 0 && children [i].setRadioSelection (false)) --i; |
| // int j = index + 1; |
| // while (j < children.length && children [j].setRadioSelection (false)) j++; |
| // setSelection (true); |
| Control [] children = parent._getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (this != child) child.setRadioSelection (false); |
| } |
| setSelection (true); |
| } |
| |
| /** |
| * Controls how text, images and arrows will be displayed |
| * in the receiver. The argument should be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is an <code>ARROW</code> button, in |
| * which case, the argument indicates the direction of |
| * the arrow (one of <code>LEFT</code>, <code>RIGHT</code>, |
| * <code>UP</code> or <code>DOWN</code>). |
| * |
| * @param alignment the new alignment |
| * |
| * @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 setAlignment (int alignment) { |
| checkWidget (); |
| _setAlignment (alignment); |
| redraw (); |
| } |
| |
| void _setAlignment (int alignment) { |
| if ((style & SWT.ARROW) != 0) { |
| if ((style & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT)) == 0) return; |
| style &= ~(SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| style |= alignment & (SWT.UP | SWT.DOWN | SWT.LEFT | SWT.RIGHT); |
| int orientation = OS.kThemeDisclosureRight; |
| if ((style & SWT.UP) != 0) orientation = OS.kThemeDisclosureDown; |
| if ((style & SWT.DOWN) != 0) orientation = OS.kThemeDisclosureDown; |
| if ((style & SWT.LEFT) != 0) orientation = OS.kThemeDisclosureLeft; |
| OS.SetControl32BitValue (handle, orientation); |
| return; |
| } |
| if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return; |
| style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| /* Alignment not honoured when image and text is visible */ |
| boolean bothVisible = text != null && text.length () > 0 && image != null; |
| if (bothVisible) { |
| if ((style & (SWT.RADIO | SWT.CHECK)) != 0) alignment = SWT.LEFT; |
| if ((style & (SWT.PUSH | SWT.TOGGLE)) != 0) alignment = SWT.CENTER; |
| } |
| int textAlignment = 0; |
| int graphicAlignment = 0; |
| if ((alignment & SWT.LEFT) != 0) { |
| textAlignment = OS.kControlBevelButtonAlignTextFlushLeft; |
| graphicAlignment = OS.kControlBevelButtonAlignLeft; |
| } |
| if ((alignment & SWT.CENTER) != 0) { |
| textAlignment = OS.kControlBevelButtonAlignTextCenter; |
| graphicAlignment = OS.kControlBevelButtonAlignCenter; |
| } |
| if ((alignment & SWT.RIGHT) != 0) { |
| textAlignment = OS.kControlBevelButtonAlignTextFlushRight; |
| graphicAlignment = OS.kControlBevelButtonAlignRight; |
| } |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonTextAlignTag, 2, new short [] {(short)textAlignment}); |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonGraphicAlignTag, 2, new short [] {(short)graphicAlignment}); |
| if (bothVisible) { |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kControlBevelButtonTextPlaceTag, 2, new short [] {(short)OS.kControlBevelButtonPlaceToRightOfGraphic}); |
| } |
| } |
| |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize, boolean events) { |
| /* |
| * Bug in MacOS X. When setting the height of a bevel button |
| * to a value less than 20, the button is drawn incorrectly. |
| * The fix is to force the height to be greater than or equal to 20. |
| */ |
| if (resize && (style & SWT.ARROW) == 0) { |
| height = Math.max (20, height); |
| } |
| return super.setBounds (x, y, width, height, move, resize, events); |
| } |
| |
| void setDefault (boolean value) { |
| if ((style & SWT.PUSH) == 0) return; |
| int window = OS.GetControlOwner (handle); |
| OS.SetWindowDefaultButton (window, value ? handle : 0); |
| } |
| |
| /** |
| * Sets the grayed state of the receiver. This state change |
| * only applies if the control was created with the SWT.CHECK |
| * style. |
| * |
| * @param grayed the new grayed state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public void setGrayed (boolean grayed) { |
| checkWidget(); |
| if ((style & SWT.CHECK) == 0) return; |
| this.grayed = grayed; |
| if (grayed) { |
| if (OS.GetControl32BitValue (handle) != 0) { |
| OS.SetControl32BitMaximum (handle, 2); |
| OS.SetControl32BitValue (handle, 2); |
| } else { |
| OS.SetControl32BitMaximum (handle, 0); |
| OS.SetControl32BitValue (handle, 0); |
| } |
| } else { |
| if (OS.GetControl32BitValue (handle) != 0) { |
| OS.SetControl32BitValue (handle, 1); |
| } |
| OS.SetControl32BitMaximum (handle, 1); |
| } |
| } |
| |
| /** |
| * Sets the receiver's image to the argument, which may be |
| * <code>null</code> indicating that no image should be displayed. |
| * <p> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </p> |
| * @param image the image to display on the receiver (may be <code>null</code>) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the image 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 setImage (Image image) { |
| checkWidget(); |
| if ((style & SWT.ARROW) != 0) return; |
| if (image != null && image.isDisposed ()) { |
| error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| if (cIcon != 0) { |
| destroyCIcon(cIcon); |
| cIcon = 0; |
| } |
| this.image = image; |
| isImage = true; |
| if (OS.VERSION < 0x1040) { |
| if ((style & SWT.PUSH) != 0 && (style & SWT.FLAT) == 0) { |
| if (image == null) { |
| setText (text); |
| return; |
| } |
| if (text.length () > 0) { |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, null, 0); |
| if (ptr == 0) error (SWT.ERROR_CANNOT_SET_TEXT); |
| OS.SetControlTitleWithCFString (handle, ptr); |
| OS.CFRelease (ptr); |
| } |
| } |
| } |
| ControlButtonContentInfo inContent = new ControlButtonContentInfo (); |
| if (image != null) { |
| if (OS.VERSION < 0x1040) { |
| cIcon = createCIcon (image); |
| inContent.contentType = (short)OS.kControlContentCIconHandle; |
| inContent.iconRef = cIcon; |
| } else { |
| inContent.contentType = (short)OS.kControlContentCGImageRef; |
| inContent.iconRef = image.handle; |
| } |
| } else { |
| inContent.contentType = (short)OS.kControlContentTextOnly; |
| } |
| OS.SetBevelButtonContentInfo (handle, inContent); |
| _setAlignment (style); |
| redraw (); |
| } |
| |
| boolean setRadioSelection (boolean value){ |
| if ((style & SWT.RADIO) == 0) return false; |
| if (getSelection () != value) { |
| setSelection (value); |
| sendSelectionEvent (SWT.Selection); |
| } |
| return true; |
| } |
| |
| /** |
| * Sets the selection state of the receiver, if it is of type <code>CHECK</code>, |
| * <code>RADIO</code>, or <code>TOGGLE</code>. |
| * |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. When it is of type <code>TOGGLE</code>, |
| * it is selected when it is pushed in. |
| * |
| * @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; |
| if ((style & SWT.CHECK) != 0) { |
| if (grayed) { |
| if (selected) { |
| OS.SetControl32BitMaximum (handle, 2); |
| OS.SetControl32BitValue (handle, 2); |
| } else { |
| OS.SetControl32BitMaximum (handle, 0); |
| OS.SetControl32BitValue (handle, 0); |
| } |
| return; |
| } |
| OS.SetControl32BitMaximum (handle, 1); |
| } |
| OS.SetControl32BitValue (handle, selected ? 1 : 0); |
| } |
| |
| /** |
| * Sets the receiver's text. |
| * <p> |
| * This method sets the button label. The label may include |
| * the mnemonic character but must not contain line delimiters. |
| * </p> |
| * <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 emphasized 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> |
| * Note that a Button can display an image and text simultaneously |
| * on Windows (starting with XP), GTK+ and OSX. On other platforms, |
| * a Button that has an image and text set into it will display the |
| * image or text that was set most recently. |
| * </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> |
| */ |
| public void setText (String string) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.ARROW) != 0) return; |
| text = string; |
| if (OS.VERSION < 0x1040) { |
| if ((style & SWT.PUSH) != 0 && (style & SWT.FLAT) == 0) { |
| if (isImage) { |
| ControlButtonContentInfo inContent = new ControlButtonContentInfo(); |
| inContent.contentType = (short)OS.kControlContentTextOnly; |
| OS.SetBevelButtonContentInfo(handle, inContent); |
| } |
| isImage = false; |
| } |
| } |
| char [] buffer = new char [text.length ()]; |
| text.getChars (0, buffer.length, buffer, 0); |
| int length = fixMnemonic (buffer); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, length); |
| if (ptr == 0) error (SWT.ERROR_CANNOT_SET_TEXT); |
| OS.SetControlTitleWithCFString (handle, ptr); |
| OS.CFRelease (ptr); |
| _setAlignment (style); |
| redraw (); |
| } |
| |
| int traversalCode (int key, int theEvent) { |
| int code = super.traversalCode (key, theEvent); |
| if ((style & SWT.ARROW) != 0) code &= ~(SWT.TRAVERSE_TAB_NEXT | SWT.TRAVERSE_TAB_PREVIOUS); |
| if ((style & SWT.RADIO) != 0) code |= SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS; |
| return code; |
| } |
| |
| } |