| /******************************************************************************* |
| * Copyright (c) 2011 Manumitting Technologies, Inc. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Brian de Alwis (MT) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.pde.spy.css; |
| |
| 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.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; |
| |
| @SuppressWarnings("restriction") |
| public class WidgetTreeProvider implements ITreeContentProvider { |
| private static final Object[] EMPTY_ARRAY = new Object[0]; |
| |
| @Override |
| public Object[] getElements(Object inputElement) { |
| if (inputElement instanceof Object[]) { |
| return (Object[]) inputElement; |
| } else if (inputElement instanceof Collection) { |
| return ((Collection<?>) inputElement).toArray(); |
| } |
| return getChildren(inputElement); |
| } |
| |
| @Override |
| public Object[] getChildren(Object parentElement) { |
| if (parentElement instanceof Display) { |
| List<Shell> shells = new ArrayList<>(); |
| for (Shell s : ((Display) parentElement).getShells()) { |
| if (!s.isDisposed()) { |
| shells.add(s); |
| } |
| } |
| return shells.toArray(); |
| } |
| CSSStylableElement element = CssSpyPart.getCSSElement(parentElement); |
| if (element == null) { |
| return EMPTY_ARRAY; |
| } |
| NodeList kids = element.getChildNodes(); |
| ArrayList<Object> children = new ArrayList<>(kids.getLength()); |
| for (int i = 0; i < kids.getLength(); i++) { |
| children.add(((CSSStylableElement) kids.item(i)).getNativeWidget()); |
| } |
| return children.toArray(); |
| } |
| |
| @Override |
| 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; |
| } |
| |
| @Override |
| public boolean hasChildren(Object element) { |
| return getChildren(element).length > 0; |
| } |
| |
| } |