org.eclipse.ui.internal.quickaccess.PropertiesProvider.java Source code

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Here is the source code for org.eclipse.ui.internal.quickaccess.PropertiesProvider.java

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/*******************************************************************************
 * Copyright (c) 2006, 2007 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.ui.internal.quickaccess;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jface.preference.IPreferenceNode;
import org.eclipse.jface.preference.PreferenceManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.IWorkbenchGraphicConstants;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.internal.dialogs.PropertyPageContributorManager;
import org.eclipse.ui.internal.dialogs.PropertyPageManager;

/**
 * @since 3.3
 * 
 */
public class PropertiesProvider extends QuickAccessProvider {

    private Map idToElement;

    public QuickAccessElement getElementForId(String id) {
        getElements();
        return (PropertiesElement) idToElement.get(id);
    }

    public QuickAccessElement[] getElements() {
        if (idToElement == null) {
            idToElement = new HashMap();
            IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
            if (activePage != null) {
                PropertyPageManager pageManager = new PropertyPageManager();
                ISelection selection = activePage.getSelection();
                if (selection instanceof IStructuredSelection && !selection.isEmpty()) {
                    Object element = ((IStructuredSelection) selection).getFirstElement();
                    PropertyPageContributorManager.getManager().contribute(pageManager, element);
                    List list = pageManager.getElements(PreferenceManager.PRE_ORDER);
                    IPreferenceNode[] properties = (IPreferenceNode[]) list
                            .toArray(new IPreferenceNode[list.size()]);
                    for (int i = 0; i < properties.length; i++) {
                        PropertiesElement propertiesElement = new PropertiesElement(element, properties[i], this);
                        idToElement.put(propertiesElement.getId(), propertiesElement);
                    }
                }
            }
        }
        return (QuickAccessElement[]) idToElement.values()
                .toArray(new QuickAccessElement[idToElement.values().size()]);
    }

    public String getId() {
        return "org.eclipse.ui.properties"; //$NON-NLS-1$
    }

    public ImageDescriptor getImageDescriptor() {
        return WorkbenchImages.getImageDescriptor(IWorkbenchGraphicConstants.IMG_OBJ_NODE);
    }

    public String getName() {
        return QuickAccessMessages.QuickAccess_Properties;
    }

    protected void doReset() {
        idToElement = null;
    }
}