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/*******************************************************************************
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* Copyright (c) 2000, 2009 IBM Corporation and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package org.eclipse.ui.internal.navigator.framelist;
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import org.eclipse.osgi.util.NLS;
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import org.eclipse.ui.ISharedImages;
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import org.eclipse.ui.PlatformUI;
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/**
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* Generic "Forward" action which goes forward one frame.
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* @since 3.4
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*/
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public class ForwardAction extends FrameAction {
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private static final String ID = "org.eclipse.ui.framelist.forward"; //$NON-NLS-1$
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/**
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* Constructs a new action for the specified frame list.
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*
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* @param frameList the frame list
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*/
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public ForwardAction(FrameList frameList) {
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super(frameList);
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setId(ID);
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setText(FrameListMessages.Forward_text);
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ISharedImages images = PlatformUI.getWorkbench().getSharedImages();
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setImageDescriptor(images
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.getImageDescriptor(ISharedImages.IMG_TOOL_FORWARD));
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setDisabledImageDescriptor(images
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.getImageDescriptor(ISharedImages.IMG_TOOL_FORWARD_DISABLED));
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PlatformUI.getWorkbench().getHelpSystem().setHelp(this,
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IFrameListHelpContextIds.FORWARD_ACTION);
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update();
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}
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private Frame getNextFrame() {
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FrameList list = getFrameList();
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return list.getFrame(list.getCurrentIndex() + 1);
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}
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private String getToolTipText(Frame nextFrame) {
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if (nextFrame != null) {
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String text = nextFrame.getToolTipText();
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if (text != null && text.length() > 0) {
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return NLS.bind(FrameListMessages.Forward_toolTipOneArg, text);
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}
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}
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return FrameListMessages.Forward_toolTip;
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}
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/**
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* Calls <code>forward()</code> on the frame list.
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*/
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public void run() {
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getFrameList().forward();
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}
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/**
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* Updates this action's enabled state and tool tip text.
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* This action is enabled only when there is a next frame in the frame list.
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* The tool tip text is "Forward to " plus the tool tip text for the next
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* frame.
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*/
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public void update() {
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super.update();
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Frame nextFrame = getNextFrame();
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setEnabled(nextFrame != null);
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setToolTipText(getToolTipText(nextFrame));
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}
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}
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