| package org.eclipse.ui.internal; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved. |
| */ |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.ui.*; |
| /** |
| * This class extends regular plugin action with the |
| * additional requirement that the delegate has |
| * to implement interface IViewActionDeelgate. |
| * This interface has one additional method (init) |
| * whose purpose is to initialize the delegate with |
| * the view part in which the action is intended to run. |
| */ |
| public final class ViewPluginAction extends PartPluginAction { |
| private IViewPart viewPart; |
| /** |
| * This class adds the requirement that action delegates |
| * loaded on demand implement IViewActionDelegate |
| */ |
| public ViewPluginAction(IConfigurationElement actionElement, String runAttribute, IViewPart viewPart,String definitionId) { |
| super(actionElement, runAttribute,definitionId); |
| this.viewPart = viewPart; |
| registerSelectionListener(viewPart); |
| } |
| |
| /** |
| * Initialize an action delegate. |
| * Subclasses may override this. |
| */ |
| protected IActionDelegate initDelegate(Object obj) |
| throws WorkbenchException |
| { |
| if (obj instanceof IViewActionDelegate) { |
| IViewActionDelegate vad = (IViewActionDelegate)obj; |
| vad.init(viewPart); |
| return vad; |
| } else |
| throw new WorkbenchException("Action must implement IViewActionDelegate"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Returns true if the view has been set |
| * The view may be null after the constructor is called and |
| * before the view is stored. We cannot create the delegate |
| * at that time. |
| */ |
| public boolean isOkToCreateDelegate() { |
| return super.isOkToCreateDelegate() && viewPart != null; |
| } |
| } |
