/*******************************************************************************
* Copyright (c) 2007 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.internal;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.EvaluationResult;
import org.eclipse.core.expressions.Expression;
import org.eclipse.core.expressions.ExpressionInfo;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.ISources;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Closes all editors except the one that is active.
* <p>
* Replacement for CloseOthersHandler
* </p>
*
* @since 3.3
*
*/
public class CloseOthersHandler extends AbstractEvaluationHandler {
private Expression enabledWhen;
public CloseOthersHandler() {
registerEnablement();
}
public Object execute(ExecutionEvent event) throws ExecutionException {
IWorkbenchWindow window = HandlerUtil
.getActiveWorkbenchWindowChecked(event);
IWorkbenchPage page = window.getActivePage();
if (page != null) {
IEditorReference[] refArray = page.getEditorReferences();
if (refArray != null && refArray.length > 1) {
IEditorReference[] otherEditors = new IEditorReference[refArray.length - 1];
IEditorReference activeEditor = (IEditorReference) page
.getReference(page.getActiveEditor());
for (int i = 0; i < refArray.length; i++) {
if (refArray[i] != activeEditor)
continue;
System.arraycopy(refArray, 0, otherEditors, 0, i);
System.arraycopy(refArray, i + 1, otherEditors, i,
refArray.length - 1 - i);
break;
}
page.closeEditors(otherEditors, true);
}
}
return null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.internal.AbstractEvaluationHandler#getEnabledWhenExpression()
*/
protected Expression getEnabledWhenExpression() {
if (enabledWhen == null) {
enabledWhen = new Expression() {
public EvaluationResult evaluate(IEvaluationContext context)
throws CoreException {
IWorkbenchWindow window = InternalHandlerUtil
.getActiveWorkbenchWindow(context);
if (window != null) {
IWorkbenchPage page = window.getActivePage();
if (page != null) {
IEditorReference[] refArray = page
.getEditorReferences();
if (refArray != null && refArray.length > 1) {
return EvaluationResult.TRUE;
}
}
}
return EvaluationResult.FALSE;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.expressions.Expression#collectExpressionInfo(org.eclipse.core.expressions.ExpressionInfo)
*/
public void collectExpressionInfo(ExpressionInfo info) {
info
.addVariableNameAccess(ISources.ACTIVE_WORKBENCH_WINDOW_NAME);
}
};
}
return enabledWhen;
}
}