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/*******************************************************************************
* Copyright (c) 2009 Atlassian 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:
* Atlassian - initial API and implementation
******************************************************************************/
package org.eclipse.mylyn.internal.reviews.ui.annotations;
import java.lang.reflect.Method;
import org.eclipse.compare.contentmergeviewer.TextMergeViewer;
import org.eclipse.compare.internal.MergeSourceViewer;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.mylyn.commons.core.StatusHandler;
import org.eclipse.mylyn.internal.reviews.ui.ReviewsUiPlugin;
import org.eclipse.mylyn.reviews.core.model.IFileItem;
import org.eclipse.mylyn.reviews.core.model.ITopic;
import org.eclipse.swt.widgets.Display;
/**
* Model for annotations in the diff view.
*
* @author Thomas Ehrnhoefer
*/
@SuppressWarnings("restriction")
public class ReviewCompareAnnotationModel {
static SourceViewer getSourceViewer(MergeSourceViewer sourceViewer) {
if (SourceViewer.class.isInstance(sourceViewer)) {
return SourceViewer.class.cast(sourceViewer);
} else {
Object returnValue;
try {
Method getSourceViewerRefl = MergeSourceViewer.class.getDeclaredMethod("getSourceViewer");
getSourceViewerRefl.setAccessible(true);
returnValue = getSourceViewerRefl.invoke(sourceViewer);
if (returnValue instanceof SourceViewer) {
return (SourceViewer) returnValue;
}
} catch (Exception e) {
// ignore
}
}
return null;
}
final ReviewAnnotationModel leftAnnotationModel;
private final ReviewAnnotationModel rightAnnotationModel;
private ReviewCompareInputListener leftViewerListener;
private ReviewCompareInputListener rightViewerListener;
private final ITopic commentToFocus;
private TextMergeViewer fMergeViewer;
private MergeSourceViewer fRightSourceViewer;
private MergeSourceViewer fLeftSourceViewer;
public ReviewCompareAnnotationModel(IFileItem reviewItem, ITopic commentToFocus) {
this.leftAnnotationModel = new ReviewAnnotationModel(null, null, null, reviewItem.getTarget());
this.rightAnnotationModel = new ReviewAnnotationModel(null, null, null, reviewItem.getBase());
this.commentToFocus = commentToFocus;
}
public void attachToViewer(final TextMergeViewer viewer, final MergeSourceViewer fLeft,
final MergeSourceViewer fRight) {
fMergeViewer = viewer;
fLeftSourceViewer = fLeft;
fRightSourceViewer = fRight;
/*
* only create listeners if they are not already existing
*/
if (!isListenerFor(leftViewerListener, fLeft, leftAnnotationModel)) {
leftViewerListener = addTextInputListener(fLeft, leftAnnotationModel);
} else {
/*
* Using asyncExec here because if the underlying slaveDocument (part of the file that gets displayed when clicking
* on a java structure in the compare editor) is changed, but the master document is not, we do not get any event
* afterwards that would give us a place to hook our code to override the annotationHover. Since all is done in the
* UI thread, using this asyncExec hack works because the unconfigure and configure of the document is finished and
* our hover-hack stays.
*/
Display.getDefault().asyncExec(new Runnable() {
public void run() {
try {
// if listeners exist, just make sure the hover hack is in there
leftViewerListener.forceCustomAnnotationHover();
} catch (Exception e) {
StatusHandler.log(new Status(IStatus.ERROR, ReviewsUiPlugin.PLUGIN_ID,
"Error attaching annotation hover", e));
}
}
});
}
if (!isListenerFor(rightViewerListener, fRight, rightAnnotationModel)) {
rightViewerListener = addTextInputListener(fRight, rightAnnotationModel);
} else {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
try {
// if listeners exist, just make sure the hover hack is in there
rightViewerListener.forceCustomAnnotationHover();
} catch (Exception e) {
StatusHandler.log(new Status(IStatus.ERROR, ReviewsUiPlugin.PLUGIN_ID,
"Error attaching annotation hover", e));
}
}
});
}
}
private boolean isListenerFor(ReviewCompareInputListener listener, MergeSourceViewer viewer,
ReviewAnnotationModel annotationModel) {
if (listener == null) {
return false;
}
return listener.isListenerFor(viewer, annotationModel);
}
private ReviewCompareInputListener addTextInputListener(final MergeSourceViewer sourceViewer,
final ReviewAnnotationModel annotationModel) {
ReviewCompareInputListener listener = new ReviewCompareInputListener(sourceViewer, annotationModel);
SourceViewer viewer = getSourceViewer(sourceViewer);
if (viewer != null) {
viewer.addTextInputListener(listener);
}
return listener;
}
public void focusOnComment() {
focusOnComment(commentToFocus);
}
public void focusOnComment(ITopic commentToFocus) {
// FIXME
// if (commentToFocus != null) {
// CrucibleFile leftFile = leftAnnotationModel.getCrucibleFile();
// VersionedVirtualFile virtualLeft = leftFile.getSelectedFile();
//
// CrucibleFile rightFile = rightAnnotationModel.getCrucibleFile();
// VersionedVirtualFile virtualRight = rightFile.getSelectedFile();
//
// MergeSourceViewer focusViewer = null;
// Map<String, IntRanges> lineRanges = commentToFocus.getLineRanges();
// if (lineRanges != null) {
// IntRanges range;
// if ((range = lineRanges.get(virtualLeft.getRevision())) != null) {
// // get the correct listener (new file is left)
// leftViewerListener.focusOnLines(range);
// focusViewer = fLeftSourceViewer;
// } else if ((range = lineRanges.get(virtualRight.getRevision())) != null) {
// rightViewerListener.focusOnLines(range);
// focusViewer = fRightSourceViewer;
// }
// setActiveViewer(focusViewer);
// }
// }
}
private void setActiveViewer(MergeSourceViewer focusViewer) {
try {
Method setActiveViewer = TextMergeViewer.class.getDeclaredMethod("setActiveViewer",
MergeSourceViewer.class, boolean.class);
setActiveViewer.setAccessible(true);
setActiveViewer.invoke(fMergeViewer, focusViewer, true);
} catch (Exception e) {
StatusHandler.log(new Status(IStatus.WARNING, ReviewsUiPlugin.PLUGIN_ID, "Failed to activate viewer", e));
}
}
public void registerContextMenu() {
rightViewerListener.registerContextMenu();
leftViewerListener.registerContextMenu();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((leftAnnotationModel == null) ? 0 : leftAnnotationModel.hashCode());
result = prime * result + ((rightAnnotationModel == null) ? 0 : rightAnnotationModel.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ReviewCompareAnnotationModel other = (ReviewCompareAnnotationModel) obj;
if (leftAnnotationModel == null) {
if (other.leftAnnotationModel != null) {
return false;
}
} else if (!leftAnnotationModel.equals(other.leftAnnotationModel)) {
return false;
}
if (rightAnnotationModel == null) {
if (other.rightAnnotationModel != null) {
return false;
}
} else if (!rightAnnotationModel.equals(other.rightAnnotationModel)) {
return false;
}
return true;
}
}
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