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/*******************************************************************************
* Copyright (c) 2006, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ui.mapping;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.swt.widgets.Event;
import org.eclipse.team.internal.ui.TeamUIMessages;
import org.eclipse.team.internal.ui.TeamUIPlugin;
import org.eclipse.team.internal.ui.Utils;
import org.eclipse.team.ui.mapping.MergeActionHandler;
import org.eclipse.team.ui.mapping.SaveableComparison;
import org.eclipse.team.ui.synchronize.ISynchronizePageConfiguration;
import org.eclipse.team.ui.synchronize.ModelParticipantAction;
import org.eclipse.team.ui.synchronize.ModelSynchronizeParticipant;
import org.eclipse.ui.PlatformUI;
/**
* An action that delegates to an appropriate handler when performing
* a merge opereration.
*
* @since 3.2
*/
public class MergeAction extends Action {
private final String handlerId;
private final CommonMenuManager manager;
private final ISynchronizePageConfiguration configuration;
private IHandler defaultHandler;
public MergeAction(String handlerId, CommonMenuManager manager, ISynchronizePageConfiguration configuration) {
Assert.isNotNull(handlerId);
Assert.isNotNull(manager);
Assert.isNotNull(configuration);
this.handlerId = handlerId;
this.manager = manager;
this.configuration = configuration;
}
@Override
public void runWithEvent(Event event) {
IHandler handler = getHandler();
if (handler != null && handler.isEnabled()) {
final SaveableComparison currentBuffer = ((ModelSynchronizeParticipant)configuration.getParticipant()).getActiveSaveable();
if (currentBuffer != null && currentBuffer.isDirty()) {
SaveableComparison targetBuffer = null;
if (handler instanceof MergeActionHandler) {
MergeActionHandler mah = (MergeActionHandler) handler;
targetBuffer = mah.getSaveable();
}
final SaveableComparison target = targetBuffer;
try {
PlatformUI.getWorkbench().getProgressService().run(true, true, monitor -> {
try {
ModelParticipantAction.handleTargetSaveableChange(configuration.getSite().getShell(),
target, currentBuffer, true, monitor);
} catch (CoreException e) {
throw new InvocationTargetException(e);
}
});
} catch (InvocationTargetException e) {
Utils.handle(e);
return;
} catch (InterruptedException e) {
return;
}
((ModelSynchronizeParticipant)configuration.getParticipant()).setActiveSaveable(targetBuffer);
}
try {
handler.execute(new ExecutionEvent(null, Collections.EMPTY_MAP, event, null));
} catch (ExecutionException e) {
handle(e);
}
}
}
/**
* Handle the given exception. By default, the user is prompted
* @param exception the exception
*/
protected void handle(Throwable exception) {
if (exception instanceof ExecutionException) {
ExecutionException ee = (ExecutionException) exception;
if (ee.getCause() != null) {
handle(exception.getCause());
}
}
IStatus status;
if (exception instanceof CoreException) {
CoreException ce = (CoreException) exception;
status = ce.getStatus();
} else {
status = new Status(IStatus.ERROR, TeamUIPlugin.ID, 0, TeamUIMessages.exception, exception);
}
ErrorDialog.openError(configuration.getSite().getShell(), null, null, status);
}
private IHandler getHandler() {
IHandler handler = manager.getHandler(handlerId);
if (handler == null) {
if (defaultHandler == null)
defaultHandler = getDefaultHandler();
return defaultHandler;
}
return handler;
}
private IHandler getDefaultHandler() {
return MergeActionHandler.getDefaultHandler(handlerId, configuration);
}
private boolean calculateEnablement() {
IHandler handler = getHandler();
return handler != null && handler.isEnabled();
}
public void dispose() {
if (defaultHandler != null)
defaultHandler.dispose();
}
public void update() {
setEnabled(calculateEnablement());
}
}
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