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/*******************************************************************************
* Copyright (c) 2000, 2006 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.ui.editors.text;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.filebuffers.FileBuffers;
import org.eclipse.core.filebuffers.manipulation.FileBufferOperationRunner;
import org.eclipse.core.filebuffers.manipulation.IFileBufferOperation;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.ui.PlatformUI;
/**
* File buffer operation action.
*
* @since 3.1
*/
public class FileBufferOperationAction extends Action implements IWorkbenchWindowActionDelegate {
private Set fResources;
private IPath fLocation;
private IWorkbenchWindow fWindow;
protected IFileBufferOperation fFileBufferOperation;
protected FileBufferOperationAction(IFileBufferOperation fileBufferOperation) {
Assert.isNotNull(fileBufferOperation);
fFileBufferOperation= fileBufferOperation;
}
/*
* @see org.eclipse.ui.IWorkbenchWindowActionDelegate#dispose()
*/
public void dispose() {
fResources= null;
fWindow= null;
fFileBufferOperation= null;
}
/*
* @see org.eclipse.ui.IWorkbenchWindowActionDelegate#init(org.eclipse.ui.IWorkbenchWindow)
*/
public void init(IWorkbenchWindow window) {
fWindow= window;
}
/*
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
fResources= new HashSet();
fLocation= null;
if (selection instanceof IStructuredSelection) {
IStructuredSelection structuredSelection= (IStructuredSelection) selection;
Iterator e= structuredSelection.iterator();
while (e.hasNext()) {
Object element= e.next();
if (element instanceof IResource)
fResources.add(element);
else if (element instanceof IAdaptable) {
IAdaptable adaptable= (IAdaptable) element;
Object adapter= adaptable.getAdapter(IResource.class);
if (adapter instanceof IResource)
fResources.add(adapter);
}
}
}
if (selection instanceof ITextSelection) {
IWorkbenchWindow window= getWorkbenchWindow();
if (window != null) {
IWorkbenchPart workbenchPart= window.getPartService().getActivePart();
if (workbenchPart instanceof IEditorPart) {
IEditorPart editorPart= (IEditorPart) workbenchPart;
IEditorInput input= editorPart.getEditorInput();
Object adapter= input.getAdapter(IResource.class);
if (adapter instanceof IResource)
fResources.add(adapter);
else {
adapter= input.getAdapter(ILocationProvider.class);
if (adapter instanceof ILocationProvider) {
ILocationProvider provider= (ILocationProvider) adapter;
fLocation= provider.getPath(input);
}
}
}
}
}
action.setText(getText());
action.setEnabled(!fResources.isEmpty() || fLocation != null);
}
protected final IWorkbenchWindow getWorkbenchWindow() {
if (fWindow == null)
fWindow= PlatformUI.getWorkbench().getActiveWorkbenchWindow();
return fWindow;
}
protected final Shell getShell() {
IWorkbenchWindow window= getWorkbenchWindow();
return window == null ? null : window.getShell();
}
/*
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
if (fResources != null && !fResources.isEmpty()) {
IFile[] files= collectFiles((IResource[]) fResources.toArray(new IResource[fResources.size()]));
if (files != null && files.length > 0)
doRun(files, null, fFileBufferOperation);
} else if (isAcceptableLocation(fLocation))
doRun(null, fLocation, fFileBufferOperation);
}
protected IFile[] collectFiles(IResource[] resources) {
Set files= new HashSet();
for (int i= 0; i < resources.length; i++) {
IResource resource= resources[i];
if ((IResource.FILE & resource.getType()) > 0)
files.add(resource);
}
return (IFile[]) files.toArray(new IFile[files.size()]);
}
protected final void doRun(final IFile[] files, final IPath location, final IFileBufferOperation fileBufferOperation) {
Job job= new Job(fileBufferOperation.getOperationName()) {
protected IStatus run(IProgressMonitor monitor) {
IStatus status;
try {
int ticks= 100;
monitor.beginTask(fFileBufferOperation.getOperationName(), ticks);
try {
IPath[] locations;
if (files != null) {
ticks -= 30;
locations= generateLocations(files, new SubProgressMonitor(monitor, 30));
} else
locations= new IPath[] { location };
if (locations != null && locations.length > 0) {
FileBufferOperationRunner runner= new FileBufferOperationRunner(FileBuffers.getTextFileBufferManager(), getShell());
runner.execute(locations, fileBufferOperation, new SubProgressMonitor(monitor, ticks));
}
status= new Status(IStatus.OK, EditorsUI.PLUGIN_ID, IStatus.OK, "", null); //$NON-NLS-1$
} finally {
monitor.done();
}
} catch (OperationCanceledException e) {
status= new Status(IStatus.CANCEL, EditorsUI.PLUGIN_ID, IStatus.OK, "", null); //$NON-NLS-1$
} catch (CoreException e) {
status= new Status(IStatus.ERROR, EditorsUI.PLUGIN_ID, IStatus.OK, "", e); //$NON-NLS-1$
}
return status;
}
};
job.setUser(true);
job.schedule();
}
protected final IPath[] generateLocations(IFile[] files, IProgressMonitor progressMonitor) {
progressMonitor.beginTask(TextEditorMessages.FileBufferOperationAction_collectionFiles_label, files.length);
try {
Set locations= new HashSet();
for (int i= 0; i < files.length; i++) {
IPath fullPath= files[i].getFullPath();
if (isAcceptableLocation(fullPath))
locations.add(fullPath);
progressMonitor.worked(1);
}
return (IPath[]) locations.toArray(new IPath[locations.size()]);
} finally {
progressMonitor.done();
}
}
protected boolean isAcceptableLocation(IPath location) {
return true;
}
}
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