/*******************************************************************************
* 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.IEditorPart;
import org.eclipse.ui.ISources;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Closes the active editor.
* <p>
* Replacement for CloseEditorAction
* </p>
*
* @since 3.3
*
*/
public class CloseEditorHandler extends AbstractEvaluationHandler {
private Expression enabledWhen;
public CloseEditorHandler() {
registerEnablement();
}
public Object execute(ExecutionEvent event) throws ExecutionException {
IWorkbenchWindow window = HandlerUtil
.getActiveWorkbenchWindowChecked(event);
IEditorPart part = HandlerUtil.getActiveEditorChecked(event);
window.getActivePage().closeEditor(part, 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 {
IEditorPart part = InternalHandlerUtil
.getActiveEditor(context);
if (part != null) {
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_EDITOR_NAME);
}
};
}
return enabledWhen;
}
}
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