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/*******************************************************************************
* Copyright (c) 2011 Manumitting Technologies, 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:
* Brian de Alwis (MT) - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.tools.css.spy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.e4.ui.css.core.dom.CSSStylableElement;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolItem;
import org.w3c.dom.NodeList;
public class WidgetTreeProvider implements ITreeContentProvider {
private static final Object[] EMPTY_ARRAY = new Object[0];
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
public Object[] getElements(Object inputElement) {
if (inputElement instanceof Object[]) {
return (Object[]) inputElement;
} else if (inputElement instanceof Collection< ? >) {
return ((Collection< ? >) inputElement).toArray();
}
return getChildren(inputElement);
}
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof Display) {
List<Shell> shells = new ArrayList<Shell>();
for (Shell s : ((Display) parentElement).getShells()) {
if (!s.isDisposed()) {
shells.add(s);
}
}
return shells.toArray();
}
CSSStylableElement element = CssSpyDialog.getCSSElement(parentElement);
if (element == null) {
return EMPTY_ARRAY;
}
NodeList kids = element.getChildNodes();
ArrayList<Object> children = new ArrayList<Object>(kids.getLength());
for (int i = 0; i < kids.getLength(); i++) {
children.add(((CSSStylableElement) kids.item(i)).getNativeWidget());
}
return children.toArray();
}
public Object getParent(Object element) {
if (element instanceof Control) {
Control control = (Control) element;
return control.isDisposed() ? null : control.getParent();
} else if (element instanceof CTabItem) {
return ((CTabItem) element).getParent();
} else if (element instanceof ToolItem) {
return ((ToolItem) element).getParent();
}
return null;
}
public boolean hasChildren(Object element) {
return getChildren(element).length > 0;
}
public void dispose() {
}
}
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