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/*******************************************************************************
* Copyright (c) 2000, 2011 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.graphics.*;
import org.eclipse.swt.internal.cocoa.*;
/**
* Instances of this class allow the user to select a color
* from a predefined set of available colors.
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>(none)</dd>
* </dl>
* <p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample, Dialog tab</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 ColorDialog extends Dialog {
RGB rgb;
boolean selected;
/**
* Constructs a new instance of this class given only its parent.
*
* @param parent a composite control which will be the parent of the new instance
*
* @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 ColorDialog(Shell parent) {
this(parent, SWT.APPLICATION_MODAL);
}
/**
* 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
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public ColorDialog(Shell parent, int style) {
super (parent, checkStyle (parent, style));
checkSubclass ();
}
void changeColor(int /*long*/ id, int /*long*/ sel, int /*long*/ sender) {
selected = true;
}
/**
* Returns the currently selected color in the receiver.
*
* @return the RGB value for the selected color, may be null
*
* @see PaletteData#getRGBs
*/
public RGB getRGB() {
return rgb;
}
/**
* Makes the receiver visible and brings it to the front
* of the display.
*
* @return the selected color, or null if the dialog was
* cancelled, no color was selected, or an error
* occurred
*
* @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 RGB open() {
NSColorPanel panel = NSColorPanel.sharedColorPanel();
String className = "SWTColorDialogPanel";
Display display = parent != null ? parent.getDisplay() : Display.getCurrent();
display.subclassPanel(panel, className);
if (rgb != null) {
NSColor color = NSColor.colorWithDeviceRed(rgb.red / 255f, rgb.green / 255f, rgb.blue / 255f, 1);
panel.setColor(color);
}
SWTPanelDelegate delegate = (SWTPanelDelegate)new SWTPanelDelegate().alloc().init();
int /*long*/ jniRef = OS.NewGlobalRef(this);
if (jniRef == 0) SWT.error(SWT.ERROR_NO_HANDLES);
OS.object_setInstanceVariable(delegate.id, Display.SWT_OBJECT, jniRef);
panel.setDelegate(delegate);
rgb = null;
selected = false;
panel.orderFront(null);
display.setModalDialog(this);
NSApplication.sharedApplication().runModalForWindow(panel);
display.setModalDialog(null);
panel.setDelegate(null);
delegate.release();
OS.DeleteGlobalRef(jniRef);
if (selected) {
NSColor color = panel.color();
if (color != null) {
float /*double*/ [] handle = display.getNSColorRGB(color);
rgb = new RGB((int)(handle[0] * 255), (int)(handle[1] * 255), (int)(handle[2] * 255));
}
}
return rgb;
}
/**
* Sets the receiver's selected color to be the argument.
*
* @param rgb the new RGB value for the selected color, may be
* null to let the platform select a default when
* open() is called
* @see PaletteData#getRGBs
*/
public void setRGB(RGB rgb) {
this.rgb = rgb;
}
void windowWillClose(int /*long*/ id, int /*long*/ sel, int /*long*/ sender) {
NSApplication.sharedApplication().stop(null);
}
}
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