ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/plugin/LoopDialog.java

/*******************************************************************************
 * Copyright (c) 2000, 2004 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
 *******************************************************************************/
package org.eclipse.pde.internal.ui.editor.plugin;

import org.eclipse.jface.dialogs.*;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.*;
import org.eclipse.pde.internal.builders.*;
import org.eclipse.pde.internal.ui.*;
import org.eclipse.pde.internal.ui.elements.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class LoopDialog extends Dialog {
	private DependencyLoop[] fLoops;
	private TreeViewer fLoopViewer;
	private Image fLoopImage;
	
	class ContentProvider extends DefaultContentProvider implements ITreeContentProvider {

		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
		 */
		public Object[] getChildren(Object parentElement) {
			if (parentElement instanceof DependencyLoop)
				return ((DependencyLoop)parentElement).getMembers();
			return new Object[0];
		}

		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
		 */
		public Object getParent(Object element) {
			return null;
		}

		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
		 */
		public boolean hasChildren(Object element) {
			return element instanceof DependencyLoop;
		}

		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
		 */
		public Object[] getElements(Object inputElement) {
			return fLoops;
		}
		
	}
	
	class LoopLabelProvider extends LabelProvider {
		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.LabelProvider#getImage(java.lang.Object)
		 */
		public Image getImage(Object element) {
			if (element instanceof DependencyLoop)
				return fLoopImage;
			return PDEPlugin.getDefault().getLabelProvider().getImage(element);
		}
		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object)
		 */
		public String getText(Object element) {
			return PDEPlugin.getDefault().getLabelProvider().getText(element);
		}
	}
	
	
	public LoopDialog(
		Shell parentShell, DependencyLoop[] loops) {
		super(parentShell);
		fLoops = loops;
		PDELabelProvider provider = PDEPlugin.getDefault().getLabelProvider();
		fLoopImage = provider.get(PDEPluginImages.DESC_LOOP_OBJ);		
	}
	
	protected void createButtonsForButtonBar(Composite parent) {
		createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
	}

	protected Control createDialogArea(Composite parent) {
		Composite container = (Composite) super.createDialogArea(parent);
		GridLayout layout = new GridLayout();
		layout.numColumns = 2;
		layout.marginWidth = layout.marginHeight = 9;
		container.setLayout(layout);
		GridData gd = new GridData(GridData.FILL_BOTH);
		gd.widthHint = 300;
		gd.heightHint = 300;
		container.setLayoutData(gd);

		fLoopViewer = new TreeViewer(container);
		fLoopViewer.setContentProvider(new ContentProvider());
		fLoopViewer.setLabelProvider(new LoopLabelProvider());
		Tree tree = fLoopViewer.getTree();
		gd = new GridData(GridData.FILL_BOTH);
		tree.setLayoutData(gd);
		fLoopViewer.setInput(PDEPlugin.getDefault());
		fLoopViewer.expandAll();
		getShell().setText(PDEPlugin.getResourceString("LoopDialog.title")); //$NON-NLS-1$
		return container;
	}
}