bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/dialogs/PropertyDialog.java

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.dialogs;

import java.util.Collection;

import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Widget;

import org.eclipse.jface.preference.IPreferenceNode;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.preference.PreferenceManager;
import org.eclipse.jface.viewers.ISelection;

import org.eclipse.ui.activities.IObjectActivityManager;
import org.eclipse.ui.internal.IWorkbenchConstants;
import org.eclipse.ui.internal.WorkbenchPlugin;

/**
 * This dialog is created and shown when 'Properties' action is performed while
 * an object is selected. It shows one or more pages registered for object's
 * type.
 */
public class PropertyDialog extends PreferenceDialog {
	private ISelection selection;

	//The id of the last page that was selected
	private static String lastPropertyId = null;

	/**
	 * The constructor.
	 */
	public PropertyDialog(Shell parentShell, PreferenceManager mng, ISelection selection) {
		super(parentShell, mng);
		setSelection(selection);
	}
	
	/**
	 * Returns selection in the "Properties" action context.
	 */
	public ISelection getSelection() {
		return selection;
	}

	/**
	 * Sets the selection that will be used to determine target object.
	 */
	public void setSelection(ISelection newSelection) {
		selection = newSelection;
	}

	/**
	 * Get the name of the selected item preference
	 */
	protected String getSelectedNodePreference() {
		return lastPropertyId;
	}

	/**
	 * Get the name of the selected item preference
	 */
	protected void setSelectedNodePreference(String pageId) {
		lastPropertyId = pageId;
	}

	/**
	 * Checks whether the given property node (based on its
	 * RegistryPageContributor) should be filtered from view (as specified by
	 * the preference page ObjectActivityManager). Note that if a given node is
	 * filtered out of the view, then its subnodes are filtered out as well.
	 * 
	 * @see org.eclipse.jface.preference.PreferenceDialog#createTreeItemFor(org.eclipse.swt.widgets.Widget,
	 *      org.eclipse.jface.preference.IPreferenceNode)
	 */
	protected void createTreeItemFor(Widget parent, IPreferenceNode node) {
		IObjectActivityManager propManager =
			WorkbenchPlugin.getDefault().getWorkbench().getObjectActivityManager(
				IWorkbenchConstants.PL_PROPERTY_PAGES,
				false);
		if (propManager != null) {
			Collection activeContributions = propManager.getEnabledObjects();
			if (node instanceof PropertyPageNode
				&& !activeContributions.contains(((PropertyPageNode) node).getContributor())) {
				return;
			}
		}
		super.createTreeItemFor(parent, node);
	}
}