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/*******************************************************************************
* Copyright (c) 2003, 2015 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.part;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.ui.IInPlaceEditor;
import org.eclipse.ui.IInPlaceEditorInput;
/**
* Adapter for making a file resource a suitable input for an in-place editor.
* <p>
* This class may be instantiated; it is not intended to be subclassed.
* </p>
*
* @since 3.0
* @noextend This class is not intended to be subclassed by clients.
*/
public class FileInPlaceEditorInput extends FileEditorInput implements
IInPlaceEditorInput {
IInPlaceEditor embeddedEditor;
/**
* A resource listener to update the input and in-place
* editor if the input's file resource changes.
*/
private IResourceChangeListener resourceListener = new IResourceChangeListener() {
@Override
public void resourceChanged(IResourceChangeEvent event) {
IResourceDelta mainDelta = event.getDelta();
if (mainDelta != null && embeddedEditor != null) {
IResourceDelta affectedElement = mainDelta.findMember(getFile()
.getFullPath());
if (affectedElement != null) {
processDelta(affectedElement);
}
}
}
private boolean processDelta(final IResourceDelta delta) {
Runnable changeRunnable = null;
switch (delta.getKind()) {
case IResourceDelta.REMOVED:
if ((IResourceDelta.MOVED_TO & delta.getFlags()) != 0) {
changeRunnable = () -> {
IPath path = delta.getMovedToPath();
IFile newFile = delta.getResource().getWorkspace()
.getRoot().getFile(path);
if (newFile != null && embeddedEditor != null) {
embeddedEditor
.sourceChanged(new FileInPlaceEditorInput(
newFile));
}
};
} else {
changeRunnable = () -> {
if (embeddedEditor != null) {
embeddedEditor.sourceDeleted();
embeddedEditor.getSite().getPage().closeEditor(
embeddedEditor, true);
}
};
}
break;
}
if (changeRunnable != null && embeddedEditor != null) {
embeddedEditor.getSite().getShell().getDisplay().asyncExec(
changeRunnable);
}
return true; // because we are sitting on files anyway
}
};
/**
* Creates an in-place editor input based on a file resource.
*
* @param file the file resource
*/
public FileInPlaceEditorInput(IFile file) {
super(file);
}
@Override
public void setInPlaceEditor(IInPlaceEditor editor) {
if (embeddedEditor != editor) {
if (embeddedEditor != null) {
getFile().getWorkspace().removeResourceChangeListener(
resourceListener);
}
embeddedEditor = editor;
if (embeddedEditor != null) {
getFile().getWorkspace().addResourceChangeListener(
resourceListener);
}
}
}
}
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