| /******************************************************************************* |
| * Copyright (c) 2007, 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.equinox.internal.p2.ui.actions; |
| |
| import org.eclipse.equinox.internal.p2.ui.ProvUI; |
| import org.eclipse.equinox.p2.operations.ProvisioningSession; |
| import org.eclipse.equinox.p2.ui.Policy; |
| import org.eclipse.equinox.p2.ui.ProvisioningUI; |
| import org.eclipse.jface.viewers.*; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.actions.SelectionProviderAction; |
| |
| public abstract class ProvisioningAction extends SelectionProviderAction { |
| ProvisioningUI ui; |
| |
| protected ProvisioningAction(ProvisioningUI ui, String text, ISelectionProvider selectionProvider) { |
| super(selectionProvider, text); |
| this.ui = ui; |
| } |
| |
| /* |
| * perform initialization that should be done after creation. |
| */ |
| protected void init() { |
| // prime the selection validation |
| ISelection selection = getSelection(); |
| if (selection instanceof IStructuredSelection) { |
| selectionChanged((IStructuredSelection) selection); |
| } else { |
| selectionChanged(selection); |
| } |
| } |
| |
| protected Shell getShell() { |
| return ProvUI.getDefaultParentShell(); |
| } |
| |
| /* |
| * Overridden to use the selection from the selection provider, not the one |
| * from the triggering event. Some selection providers reinterpret the raw selections |
| * (non-Javadoc) |
| * @see org.eclipse.ui.actions.SelectionProviderAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection) |
| */ |
| public final void selectionChanged(IStructuredSelection selection) { |
| ISelection providerSelection = getSelectionProvider().getSelection(); |
| if (providerSelection instanceof IStructuredSelection) { |
| checkEnablement(((IStructuredSelection) providerSelection).toArray()); |
| } else { |
| // shouldn't really happen, but a provider could decide to de-structure the selection |
| selectionChanged(providerSelection); |
| } |
| } |
| |
| protected void checkEnablement(Object[] selections) { |
| // Default is to nothing |
| } |
| |
| /** |
| * Recheck the enablement. Called by clients when some condition outside of |
| * the action that may effect its enablement should be changed. |
| */ |
| public final void checkEnablement() { |
| ISelection selection = getSelection(); |
| if (selection instanceof IStructuredSelection) { |
| checkEnablement(((IStructuredSelection) selection).toArray()); |
| } else { |
| selectionChanged(selection); |
| } |
| } |
| |
| protected ProvisioningSession getSession() { |
| return ui.getSession(); |
| } |
| |
| protected Policy getPolicy() { |
| return ui.getPolicy(); |
| } |
| |
| protected ProvisioningUI getProvisioningUI() { |
| return ui; |
| } |
| } |