/*******************************************************************************
* Copyright (c) 2009, 2017 Angelo Zerr 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:
* Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation
* IBM Corporation - initial API and implementation
* Simon Scholz <simon.scholz@vogella.com> - Bug 513300
*******************************************************************************/
package org.eclipse.e4.ui.css.swt.dom;
import org.eclipse.e4.ui.css.core.dom.CSSStylableElement;
import org.eclipse.e4.ui.css.core.engine.CSSEngine;
import org.eclipse.e4.ui.css.swt.helpers.CSSSWTImageHelper;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Button;
/**
* {@link CSSStylableElement} implementation which wrap SWT {@link Button}.
*
*/
public class ButtonElement extends ControlElement {
private boolean isSelected = false;;
private SelectionListener selectionListener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
if (!e.widget.isDisposed()) {
ButtonElement.this.isSelected = getButton().getSelection();
doApplyStyles();
}
}
};
public ButtonElement(Button button, CSSEngine engine) {
super(button, engine);
this.isSelected = button.getSelection();
}
@Override
public void initialize() {
super.initialize();
if (!dynamicEnabled) {
return;
}
Button button = getButton();
button.addSelectionListener(selectionListener);
}
@Override
public void dispose() {
super.dispose();
if (!dynamicEnabled) {
return;
}
Button button = getButton();
if (!button.isDisposed()) {
button.removeSelectionListener(selectionListener);
}
}
@Override
public boolean isPseudoInstanceOf(String s) {
if ("checked".equalsIgnoreCase(s)) {
return this.isSelected;
}
return super.isPseudoInstanceOf(s);
}
protected Button getButton() {
return (Button) getNativeWidget();
}
@Override
public void reset() {
CSSSWTImageHelper.restoreDefaultImage(getButton());
super.reset();
}
}