ChangeToPerspectiveMenu.java :  » IDE-Eclipse » ui-workbench » org » eclipse » ui » internal » Java Open Source

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/*******************************************************************************
 * Copyright (c) 2000, 2009 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;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.NotEnabledException;
import org.eclipse.core.commands.NotHandledException;
import org.eclipse.core.commands.ParameterizedCommand;
import org.eclipse.core.commands.common.NotDefinedException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.IPerspectiveDescriptor;
import org.eclipse.ui.IWorkbenchCommandConstants;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.actions.PerspectiveMenu;
import org.eclipse.ui.commands.ICommandService;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.internal.util.PrefUtil;
import org.eclipse.ui.statushandlers.StatusManager;

/**
 * Change the perspective of the active page in the window
 * to the selected one.
 */
public class ChangeToPerspectiveMenu extends PerspectiveMenu {

    /**
     * Constructor for ChangeToPerspectiveMenu.
     * 
     * @param window the workbench window this action applies to
     * @param id the menu id
     */
    public ChangeToPerspectiveMenu(IWorkbenchWindow window, String id) {
        super(window, id);
        // indicate that a open perspectives submenu has been created
    if (window instanceof WorkbenchWindow) {
      ((WorkbenchWindow) window)
          .addSubmenu(WorkbenchWindow.OPEN_PERSPECTIVE_SUBMENU);
    }
        showActive(true);
    }

    /* (non-Javadoc)
     * @see PerspectiveMenu#run(IPerspectiveDescriptor)
     */
    protected void run(IPerspectiveDescriptor desc) {
    IPreferenceStore store = PrefUtil.getInternalPreferenceStore();
    int mode = store.getInt(IPreferenceConstants.OPEN_PERSP_MODE);
    IWorkbenchPage page = getWindow().getActivePage();
    IPerspectiveDescriptor persp = null;
    if (page != null) {
      persp = page.getPerspective();
    }

    IHandlerService handlerService = (IHandlerService) getWindow()
        .getService(IHandlerService.class);
    ICommandService commandService = (ICommandService) getWindow()
        .getService(ICommandService.class);

    Command command = commandService
        .getCommand(IWorkbenchCommandConstants.PERSPECTIVES_SHOW_PERSPECTIVE);
    Map parameters = new HashMap();
    parameters
        .put(
            "org.eclipse.ui.perspectives.showPerspective.perspectiveId", desc.getId()); //$NON-NLS-1$

    // Only open a new window if user preference is set and the window
    // has an active perspective.
    if (IPreferenceConstants.OPM_NEW_WINDOW == mode && persp != null) {

      //Call the handler!
      //Set up the param for newWindow!
      parameters
          .put(
              "org.eclipse.ui.perspectives.showPerspective.newWindow", "true"); //$NON-NLS-1$//$NON-NLS-2$
    }
    
    ParameterizedCommand pCommand = ParameterizedCommand.generateCommand(
        command, parameters);
    try {
      handlerService.executeCommand(pCommand, null);
    } catch (ExecutionException e) {
      StatusManager.getManager().handle(
          new Status(IStatus.WARNING, WorkbenchPlugin.PI_WORKBENCH,
              "Failed to execute " + IWorkbenchCommandConstants.PERSPECTIVES_SHOW_PERSPECTIVE, e)); //$NON-NLS-1$
    } catch (NotDefinedException e) {
      StatusManager.getManager().handle(
          new Status(IStatus.WARNING, WorkbenchPlugin.PI_WORKBENCH,
              "Failed to execute " + IWorkbenchCommandConstants.PERSPECTIVES_SHOW_PERSPECTIVE, e)); //$NON-NLS-1$
    } catch (NotEnabledException e) {
      StatusManager.getManager().handle(
          new Status(IStatus.WARNING, WorkbenchPlugin.PI_WORKBENCH,
              "Failed to execute " + IWorkbenchCommandConstants.PERSPECTIVES_SHOW_PERSPECTIVE, e)); //$NON-NLS-1$
    } catch (NotHandledException e) {
      StatusManager.getManager().handle(
          new Status(IStatus.WARNING, WorkbenchPlugin.PI_WORKBENCH,
              "Failed to execute " + IWorkbenchCommandConstants.PERSPECTIVES_SHOW_PERSPECTIVE, e)); //$NON-NLS-1$
    }
  }
}
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