gov.redhawk.sca.internal.ui.actions.OpenWithActionProvider.java Source code

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Here is the source code for gov.redhawk.sca.internal.ui.actions.OpenWithActionProvider.java

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/** 
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * 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.
 *
 */
package gov.redhawk.sca.internal.ui.actions;

import gov.redhawk.sca.internal.ui.ScaContentTypeRegistry;
import gov.redhawk.sca.ui.IScaEditorDescriptor;
import gov.redhawk.sca.util.PluginUtil;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.action.GroupMarker;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.navigator.CommonActionProvider;
import org.eclipse.ui.navigator.ICommonActionConstants;
import org.eclipse.ui.navigator.ICommonActionExtensionSite;
import org.eclipse.ui.navigator.ICommonMenuConstants;
import org.eclipse.ui.navigator.ICommonViewerWorkbenchSite;

/**
 * 
 */
public class OpenWithActionProvider extends CommonActionProvider {
    private OpenFileAction openFileAction;

    private ICommonViewerWorkbenchSite viewSite = null;

    private boolean contribute = false;

    @Override
    public void init(final ICommonActionExtensionSite aConfig) {
        if (aConfig.getViewSite() instanceof ICommonViewerWorkbenchSite) {
            this.viewSite = (ICommonViewerWorkbenchSite) aConfig.getViewSite();
            this.openFileAction = new OpenFileAction(this.viewSite.getPage());
            this.contribute = true;
        }
    }

    @Override
    public void fillContextMenu(final IMenuManager aMenu) {
        if (!this.contribute || getContext().getSelection().isEmpty()) {
            return;
        }

        final IStructuredSelection selection = (IStructuredSelection) getContext().getSelection();

        this.openFileAction.selectionChanged(selection);
        if (this.openFileAction.isEnabled()) {
            aMenu.insertAfter(ICommonMenuConstants.GROUP_OPEN, this.openFileAction);
        }
        addOpenWithMenu(aMenu);
    }

    @Override
    public void fillActionBars(final IActionBars theActionBars) {
        if (!this.contribute) {
            return;
        }
        final IStructuredSelection selection = (IStructuredSelection) getContext().getSelection();
        if (selection.size() == 1) {
            this.openFileAction.selectionChanged(selection);
            theActionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, this.openFileAction);
        }

    }

    private void addOpenWithMenu(final IMenuManager aMenu) {
        final IStructuredSelection ss = (IStructuredSelection) getContext().getSelection();

        if (ss == null || ss.size() != 1) {
            return;
        }

        final Object o = ss.getFirstElement();

        final EObject openable = PluginUtil.adapt(EObject.class, o);
        final IScaEditorDescriptor[] editors = ScaContentTypeRegistry.INSTANCE.getAllScaEditorDescriptors(openable);

        if (openable != null && editors.length > 0) {
            // Create a menu flyout.
            final IMenuManager submenu = new MenuManager("Open Wit&h", ICommonMenuConstants.GROUP_OPEN_WITH);
            submenu.add(new GroupMarker(ICommonMenuConstants.GROUP_TOP));
            submenu.add(new OpenWithMenu(this.viewSite.getPage(), openable));
            submenu.add(new GroupMarker(ICommonMenuConstants.GROUP_ADDITIONS));

            // Add the submenu.
            if (submenu.getItems().length > 2 && submenu.isEnabled()) {
                aMenu.appendToGroup(ICommonMenuConstants.GROUP_OPEN_WITH, submenu);
            }
        }
    }
}