/*******************************************************************************
* 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;
}
}