com.siteview.mde.internal.ui.views.dependencies.DependenciesViewTreePage.java Source code

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Here is the source code for com.siteview.mde.internal.ui.views.dependencies.DependenciesViewTreePage.java

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/*******************************************************************************
 *  Copyright (c) 2000, 2008 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 com.siteview.mde.internal.ui.views.dependencies;

import org.eclipse.jface.action.*;
import org.eclipse.jface.viewers.*;
import org.eclipse.osgi.service.resolver.BundleSpecification;
import org.eclipse.osgi.service.resolver.ImportPackageSpecification;
import com.siteview.mde.internal.ui.MDEPluginImages;
import com.siteview.mde.internal.ui.MDEUIMessages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Composite;
import org.osgi.framework.Constants;

public class DependenciesViewTreePage extends DependenciesViewPage {
    class CollapseAllAction extends Action {
        public CollapseAllAction() {
            super();
            setText(MDEUIMessages.DependenciesViewTreePage_CollapseAllAction_label);
            setDescription(MDEUIMessages.DependenciesViewTreePage_CollapseAllAction_description);
            setToolTipText(MDEUIMessages.DependenciesViewTreePage_CollapseAllAction_tooltip);
            setImageDescriptor(MDEPluginImages.DESC_COLLAPSE_ALL);
            setDisabledImageDescriptor(MDEPluginImages.DESC_COLLAPSE_ALL);
        }

        /*
         * (non-Javadoc)
         * 
         * @see org.eclipse.jface.action.Action#run()
         */
        public void run() {
            super.run();
            fTreeViewer.collapseAll();
        }
    }

    class OptionalFilter extends ViewerFilter {

        public boolean select(Viewer v, Object parent, Object element) {
            if (element instanceof BundleSpecification) {
                return !((BundleSpecification) element).isOptional();
            } else if (element instanceof ImportPackageSpecification)
                return !Constants.RESOLUTION_OPTIONAL.equals(
                        ((ImportPackageSpecification) element).getDirective(Constants.RESOLUTION_DIRECTIVE));
            return true;
        }
    }

    TreeViewer fTreeViewer;
    private OptionalFilter fHideOptionalFilter = new OptionalFilter();

    public DependenciesViewTreePage(DependenciesView view, ITreeContentProvider contentProvider) {
        super(view, contentProvider);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.pde.internal.ui.view.DependenciesViewPage#createViewer(org.eclipse.swt.widgets.Composite)
     */
    protected StructuredViewer createViewer(Composite parent) {
        fTreeViewer = new TreeViewer(parent, SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
        fTreeViewer.setContentProvider(fContentProvider);
        final DependenciesLabelProvider labelProvider = new DependenciesLabelProvider(true);
        fTreeViewer.setLabelProvider(labelProvider);
        fTreeViewer.getControl().addDisposeListener(new DisposeListener() {
            public void widgetDisposed(DisposeEvent e) {
                labelProvider.dispose();
            }
        });
        fTreeViewer.setAutoExpandLevel(2);

        return fTreeViewer;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.part.Page#makeContributions(org.eclipse.jface.action.IMenuManager,
     *      org.eclipse.jface.action.IToolBarManager,
     *      org.eclipse.jface.action.IStatusLineManager)
     */
    public void makeContributions(IMenuManager menuManager, IToolBarManager toolBarManager,
            IStatusLineManager statusLineManager) {
        super.makeContributions(menuManager, toolBarManager, statusLineManager);
        if (toolBarManager.find(DependenciesView.TREE_ACTION_GROUP) != null)
            toolBarManager.prependToGroup(DependenciesView.TREE_ACTION_GROUP, new CollapseAllAction());
        else
            toolBarManager.add(new CollapseAllAction());
    }

    protected void handleShowOptional(boolean isChecked, boolean refreshIfNecessary) {
        if (isChecked)
            fTreeViewer.removeFilter(fHideOptionalFilter);
        else
            fTreeViewer.addFilter(fHideOptionalFilter);
        // filter automatically refreshes tree, therefore can ignore refreshIfNecessary
    }

    protected boolean isShowingOptional() {
        ViewerFilter[] filters = fTreeViewer.getFilters();
        for (int i = 0; i < filters.length; i++)
            if (filters[i].equals(fHideOptionalFilter))
                return false;
        return true;
    }

}