Mercurial > projects > dwt2
diff org.eclipse.draw2d/src/org/eclipse/draw2d/CheckBox.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
parents | |
children | dbfb303e8fb0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.draw2d/src/org/eclipse/draw2d/CheckBox.d Sat Mar 14 18:23:29 2009 +0100 @@ -0,0 +1,115 @@ +/******************************************************************************* + * Copyright (c) 2000, 2005 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + * Port to the D programming language: + * Frank Benoit <benoit@tionex.de> + *******************************************************************************/ +module org.eclipse.draw2d.CheckBox; + +import java.lang.all; +import org.eclipse.swt.dwthelper.ByteArrayInputStream; + +import org.eclipse.swt.graphics.Image; +import org.eclipse.swt.graphics.ImageData; +import org.eclipse.draw2d.Toggle; +import org.eclipse.draw2d.Label; +import org.eclipse.draw2d.ChangeListener; +import org.eclipse.draw2d.ChangeEvent; +import org.eclipse.draw2d.ButtonModel; + +/** + * A Checkbox is a toggle figure which toggles between the checked and unchecked figures + * to simulate a check box. A check box contains a text label to represent it. + */ +public final class CheckBox + : Toggle +{ + +private Label label = null; + +private static Image + UNCHECKED_, + CHECKED_; + +package static Image UNCHECKED(){ + if( UNCHECKED_ is null ){ + synchronized( CheckBox.classinfo ){ + if( UNCHECKED_ is null ){ + UNCHECKED_ = createImage( getImportData!("org.eclipse.draw2d.checkboxenabledoff.gif")); + } + } + } + assert( UNCHECKED_ ); + return UNCHECKED_; +} +package static Image CHECKED(){ + if( CHECKED_ is null ){ + synchronized( CheckBox.classinfo ){ + if( CHECKED_ is null ){ + CHECKED_ = createImage( getImportData!("org.eclipse.draw2d.checkboxenabledon.gif")); + } + } + } + assert( CHECKED_ ); + return CHECKED_; +} + +private static Image createImage( ImportData importdata ) { + Image image = new Image(null, new ImageData(new ByteArrayInputStream( cast(byte[]) importdata.data))); + return image; +} + +/** + * Constructs a CheckBox with no text. + * + * @since 2.0 + */ +public this() { + this(""); //$NON-NLS-1$ +} + +/** + * Constructs a CheckBox with the passed text in its label. + * @param text The label text + * @since 2.0 + */ +public this(String text) { + setContents(label = new Label(text, UNCHECKED)); +} + +/** + * Adjusts CheckBox's icon depending on selection status. + * + * @since 2.0 + */ +protected void handleSelectionChanged() { + if (isSelected()) + label.setIcon(CHECKED); + else + label.setIcon(UNCHECKED); +} + +/** + * Initializes this Clickable by setting a default model and adding a clickable event + * handler for that model. Also adds a ChangeListener to update icon when selection + * status changes. + * + * @since 2.0 + */ +protected void init() { + super.init(); + addChangeListener(new class() ChangeListener { + public void handleStateChanged(ChangeEvent changeEvent) { + if (changeEvent.getPropertyName().equals(ButtonModel.SELECTED_PROPERTY)) + handleSelectionChanged(); + } + }); +} + +}