/*******************************************************************************
* Copyright (c) 2012 Google, Inc.
* 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:
* Google, Inc. - initial API and implementation
*******************************************************************************/
package com.windowtester.runtime.swt.internal.widgets;
import java.lang.reflect.Field;
import java.util.concurrent.Callable;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.TextLayout;
import org.eclipse.swt.widgets.Link;
import com.windowtester.runtime.internal.concurrent.SafeCallable;
/**
* A {@link Link} reference.
*/
public class LinkReference extends ControlReference<Link>{
public LinkReference(Link control) {
super(control);
}
/* (non-Javadoc)
* @see com.windowtester.runtime.swt.internal.widgets.ControlReference#isVisible()
*/
@Override
public boolean isVisible() {
return displayRef.execute(new Callable<Boolean>() {
public Boolean call() throws Exception {
// for some reason Links return false when asked if "isVisible"...
// so use getVisible() instead
return widget.getVisible();
}
});
}
/**
* Get link text offset index.
*/
public Rectangle getOffset(final int index) {
return displayRef.execute(new SafeCallable<Rectangle>() {
public Rectangle call() throws Exception {
Class<? extends Link> linkClass = widget.getClass();
Field field = linkClass.getDeclaredField("offsets");
field.setAccessible(true);
Point[] offsets = (Point[]) field.get(widget);
Field layoutField = linkClass.getDeclaredField("layout");
layoutField.setAccessible(true);
TextLayout layout = (TextLayout) layoutField.get(widget);
Point offset = offsets[index];
boolean synthesized = false;
if (layout == null) {
/*
* in win32, the layout is coming back null. The remedy
* is to synthesize our own.
*/
synthesized = true;
layout = synthesizeLayout();
}
Rectangle bounds = layout.getBounds(offset.x, offset.y);
if (synthesized)
layout.dispose();
return bounds;
}
public Rectangle handleException(Throwable e) throws Throwable {
throw new RuntimeException("unable to get Link offset", e);
}
});
}
protected TextLayout synthesizeLayout() {
TextLayout layout = new TextLayout(widget.getDisplay());
layout.setOrientation(SWT.LEFT_TO_RIGHT);
layout.setText(widget.getText());
layout.setFont(widget.getFont());
return layout;
}
}