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/*******************************************************************************
* Copyright (c) 2013 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.ui.contexts;
import java.util.Set;
import java.util.TreeSet;
import org.eclipse.debug.internal.ui.DebugPluginImages;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
import org.eclipse.debug.internal.ui.actions.ActionMessages;
import org.eclipse.jface.action.Action;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IViewReference;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
/**
* Creates a new instances of views. It manages the view's secondary IDs and
* re-uses them as needed.
*
* @since 3.9
*/
public class NewViewInstanceAction extends Action {
public static String PIN_CLONE_VIEW_TAG = "PLATFORM_PIN_CLONE_VIEW_"; //$NON-NLS-1$
private IViewPart fView;
/**
* Creates the new instance action for the given view.
*/
public NewViewInstanceAction(IViewPart view) {
super(ActionMessages.NewViewAction_label);
fView = view;
setToolTipText(ActionMessages.NewViewAction_label);
setHoverImageDescriptor(DebugPluginImages.getImageDescriptor(IInternalDebugUIConstants.IMG_ELCL_NEW_CONFIG));
setId(DebugUIPlugin.getUniqueIdentifier() + ".NewViewAction"); //$NON-NLS-1$
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IDebugHelpContextIds.NEW_VIEW_ACTION);
}
public void run() {
try {
String viewId = fView.getSite().getId();
String secondaryId = encodeClonedPartSecondaryId(getNextSecondaryId(fView).toString());
if (fView instanceof IPinnablePart) {
createNewPart(fView);
}
fView.getSite().getPage().showView(viewId, secondaryId, IWorkbenchPage.VIEW_VISIBLE);
} catch (PartInitException e) {
DebugUIPlugin.log(e);
}
}
public static IViewPart createNewPart(IViewPart part) {
try {
String viewId = part.getSite().getId();
String secondaryId = NewViewInstanceAction.encodeClonedPartSecondaryId(getNextSecondaryId(part).toString());
if (part instanceof IPinnablePart) {
((IPinnablePart)part).copyViewSettings(secondaryId);
}
return part.getSite().getPage().showView(viewId, secondaryId, IWorkbenchPage.VIEW_ACTIVATE);
} catch (PartInitException e) {
DebugUIPlugin.log(e);
}
return null;
}
/**
* Returns the next available secondary ID for the given primary view ID.
*
* @param viewId Primary view ID to look up.
* @return Next available secondary ID.
*/
public static Integer getNextSecondaryId(IViewPart part) {
IWorkbenchWindow window = part.getSite().getWorkbenchWindow();
IViewReference[] viewRefs = window.getActivePage().getViewReferences();
Set usedIds= new TreeSet();
for (int i = 0; i < viewRefs.length; i++) {
usedIds.add( decodeClonedPartSecondaryId( viewRefs[i].getSecondaryId()) );
}
for (int i = 1; i < Integer.MAX_VALUE; ++i) {
if (!usedIds.contains(Integer.toString(i))) {
return new Integer(i);
}
}
return new Integer(0);
}
/**
* Encodes cloned part secondary id.
*
* @param secondaryId the part's secondary id.
* @return an encoded part secondary id, can be <code>null</code>.
*/
public static String encodeClonedPartSecondaryId(String secondaryId) {
return PIN_CLONE_VIEW_TAG + secondaryId;
}
/**
* Decodes cloned part secondary id.
*
* @param secondaryId the part's secondary id
* @return a decoded part secondary id
*/
public static String decodeClonedPartSecondaryId(String secondaryId) {
if (secondaryId == null)
return ""; //$NON-NLS-1$
return secondaryId.replaceFirst(PIN_CLONE_VIEW_TAG, ""); //$NON-NLS-1$
}
/**
* Determine whether the view part is a cloned part.
*
* @param part the view part
* @return true if it is a cloned part
*/
public static boolean isClonedPart(IViewPart part) {
String secondaryId = part.getViewSite().getSecondaryId();
return hasCloneTag(secondaryId);
}
/**
* Determine whether the view reference is a cloned part.
*
* @param ref the view reference
* @return true if it is a cloned part
*/
public static boolean isClonedPart(IViewReference ref) {
String secondaryId = ref.getSecondaryId();
return hasCloneTag(secondaryId);
}
/**
* Returns whether the id has the <code>PIN_CLONE_VIEW_TAG</code>.
*
* @param id view id
* @return true if it has the tag, otherwise false
*/
private static boolean hasCloneTag(String id) {
return id != null && id.startsWith(PIN_CLONE_VIEW_TAG);
}
}
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