| /****************************************************************************** |
| * Copyright (c) 2005, 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 org.eclipse.gmf.runtime.diagram.ui.render.internal.providers; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.commands.operations.IUndoContext; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.common.core.command.ICommand; |
| import org.eclipse.gmf.runtime.common.ui.action.global.GlobalActionId; |
| import org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionContext; |
| import org.eclipse.gmf.runtime.common.ui.util.CustomData; |
| import org.eclipse.gmf.runtime.common.ui.util.ICustomData; |
| import org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart; |
| import org.eclipse.gmf.runtime.diagram.ui.providers.DiagramGlobalActionHandler; |
| import org.eclipse.gmf.runtime.diagram.ui.render.clipboard.AWTClipboardHelper; |
| import org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.PasteViewRequest; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.IWorkbenchPart; |
| |
| /** |
| * Concrete class that implements the <code>IGlobalActionHandler</code> |
| * interface and provides a command for <code>GlobalActionId.CUT</code>, |
| * <code>GlobalActionId.COPY</code>, and <code>GlobalActionId.PASTE</code>. |
| * |
| * @author cmahoney |
| * @canBeSeenBy org.eclipse.gmf.runtime.diagram.ui.render.* |
| */ |
| public class ImageSupportGlobalActionHandler |
| extends DiagramGlobalActionHandler { |
| |
| /** |
| * Constructor for CopyWithImageSupportGlobalActionHandler. |
| */ |
| public ImageSupportGlobalActionHandler() { |
| super(); |
| } |
| |
| /** |
| * @see org.eclipse.gmf.runtime.common.ui.action.AbstractGlobalActionHandler#canHandle(IGlobalActionContext) |
| */ |
| public boolean canHandle(IGlobalActionContext cntxt) { |
| |
| /* Check if the active part is a IDiagramWorkbenchPart */ |
| IWorkbenchPart part = cntxt.getActivePart(); |
| if (!(part instanceof IDiagramWorkbenchPart)) { |
| return false; |
| } |
| |
| /* Check if the selection is a structured selection */ |
| if (!(cntxt.getSelection() instanceof IStructuredSelection)) { |
| return false; |
| } |
| |
| /* Check the action id */ |
| String actionId = cntxt.getActionId(); |
| if (actionId.equals(GlobalActionId.COPY)) { |
| return canCopy(cntxt); |
| } else if (actionId.equals(GlobalActionId.CUT)) { |
| return canCut(cntxt); |
| } else if (actionId.equals(GlobalActionId.PASTE)) { |
| return canPaste(cntxt); |
| } |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.diagram.ui.providers.DiagramGlobalActionHandler#canPaste(org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionContext) |
| */ |
| protected boolean canPaste(IGlobalActionContext cntxt) { |
| if (!AWTClipboardHelper.getInstance().isImageCopySupported()) { |
| return super.canPaste(cntxt); |
| } |
| |
| /* Check if the clipboard has data for the drawing surface */ |
| return AWTClipboardHelper.getInstance().hasCustomData(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.diagram.ui.providers.DiagramGlobalActionHandler#getCopyCommand(org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionContext, |
| * org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart, |
| * boolean) |
| */ |
| protected ICommand getCopyCommand(IGlobalActionContext cntxt, |
| IDiagramWorkbenchPart diagramPart, final boolean isUndoable) { |
| if (!AWTClipboardHelper.getInstance().isImageCopySupported()) { |
| return super.getCopyCommand(cntxt, diagramPart, isUndoable); |
| } |
| |
| return new CopyImageCommand(cntxt.getLabel(), diagramPart.getDiagram(), |
| getSelectedViews(cntxt.getSelection()), diagramPart |
| .getDiagramEditPart()) { |
| |
| public boolean canUndo() { |
| return isUndoable; |
| } |
| |
| public boolean canRedo() { |
| return isUndoable; |
| } |
| |
| protected CommandResult doUndoWithResult( |
| IProgressMonitor progressMonitor, IAdaptable info) |
| throws ExecutionException { |
| |
| return isUndoable ? CommandResult.newOKCommandResult() |
| : super.doUndoWithResult(progressMonitor, info); |
| } |
| |
| protected CommandResult doRedoWithResult( |
| IProgressMonitor progressMonitor, IAdaptable info) |
| throws ExecutionException { |
| |
| return isUndoable ? CommandResult.newOKCommandResult() |
| : super.doRedoWithResult(progressMonitor, info); |
| } |
| |
| public void addContext(IUndoContext context) { |
| if (isUndoable) { |
| super.addContext(context); |
| } |
| } |
| |
| public void removeContext(IUndoContext context) { |
| if (isUndoable) { |
| super.removeContext(context); |
| } |
| } |
| }; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.gmf.runtime.diagram.ui.providers.DiagramGlobalActionHandler#createPasteViewRequest() |
| */ |
| protected PasteViewRequest createPasteViewRequest() { |
| if (!AWTClipboardHelper.getInstance().isImageCopySupported()) { |
| return super.createPasteViewRequest(); |
| } |
| |
| CustomData data = AWTClipboardHelper.getInstance().getCustomData(); |
| |
| return new PasteViewRequest(new ICustomData[] {data}); |
| } |
| } |