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/*******************************************************************************
* Copyright (c) 2015 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.gerrit.ui;
import org.eclipse.compare.CompareConfiguration;
import org.eclipse.compare.CompareEditorInput;
import org.eclipse.compare.CompareUI;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.mylyn.commons.core.StatusHandler;
import org.eclipse.mylyn.internal.reviews.ui.compare.FileItemCompareEditorInput;
import org.eclipse.mylyn.internal.reviews.ui.compare.ReviewItemSetCompareEditorInput;
import org.eclipse.mylyn.reviews.core.model.IFileItem;
import org.eclipse.mylyn.reviews.core.model.IReviewItemSet;
import org.eclipse.mylyn.reviews.ui.ReviewBehavior;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.Lists;
public class GerritCompareUi {
public static CompareEditorInput getReviewItemSetComparisonEditor(ReviewItemSetCompareEditorInput editorInput,
IReviewItemSet items, String taskId) {
return getComparisonEditor(editorInput, getReviewItemSetComparePredicate(items, taskId));
}
public static void openCompareEditor(CompareEditorInput input) {
CompareUI.openCompareEditor(input);
}
public static void openFileComparisonEditor(CompareConfiguration configuration, IFileItem item,
ReviewBehavior behavior) {
CompareEditorInput editorInput = new FileItemCompareEditorInput(configuration, item, behavior);
CompareEditorInput newInput = getComparisonEditor(editorInput, getFileComparePredicate(item));
openCompareEditor(newInput);
}
private static CompareEditorInput getComparisonEditor(CompareEditorInput editorInput,
Predicate<CompareEditorInput> function) {
IEditorReference[] editorReferences = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow()
.getActivePage()
.getEditorReferences();
return getComparisonEditorInput(editorReferences, editorInput, function);
}
static CompareEditorInput getComparisonEditorInput(IEditorReference[] editorReferences,
CompareEditorInput editorInput, Predicate<CompareEditorInput> predicate) {
return FluentIterable.from(Lists.newArrayList(editorReferences)).filter(new Predicate<IEditorReference>() {
public boolean apply(IEditorReference ref) {
return ref.getId().equals("org.eclipse.compare.CompareEditor"); //$NON-NLS-1$
}
}).transform(new Function<IEditorReference, CompareEditorInput>() {
public CompareEditorInput apply(IEditorReference reference) {
try {
return (CompareEditorInput) reference.getEditorInput();
} catch (PartInitException e) {
handleError(e);
}
return null;
}
}).firstMatch(predicate).or(editorInput);
}
static Predicate<CompareEditorInput> getFileComparePredicate(final IFileItem item) {
return new Predicate<CompareEditorInput>() {
@Override
public boolean apply(CompareEditorInput existingEditorInput) {
if (existingEditorInput instanceof FileItemCompareEditorInput) {
return (((FileItemCompareEditorInput) existingEditorInput).getFileItemId().equals(item.getId()));
}
return false;
}
};
}
static Predicate<CompareEditorInput> getReviewItemSetComparePredicate(final IReviewItemSet itemSet,
final String taskId) {
return new Predicate<CompareEditorInput>() {
@Override
public boolean apply(CompareEditorInput existingEditorInput) {
if (existingEditorInput instanceof ReviewItemSetCompareEditorInput) {
return (((ReviewItemSetCompareEditorInput) existingEditorInput).getName().equals(itemSet.getName()) && taskId.equals(((ReviewItemSetCompareEditorInput) existingEditorInput).getItemTaskId()));
}
return false;
}
};
}
protected static void handleError(PartInitException error) {
StatusHandler.log(new Status(IStatus.ERROR, GerritUiPlugin.PLUGIN_ID,
"There was an error restoring the editor input.", error)); //$NON-NLS-1$
}
}
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