org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/actions/DisplayAction.java

package org.eclipse.jdt.internal.debug.ui.actions;

/**********************************************************************
Copyright (c) 2000, 2002 IBM Corp.  All rights reserved.
This file is made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html
**********************************************************************/

import java.text.MessageFormat;

import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.model.IValue;
import org.eclipse.debug.ui.IValueDetailListener;
import org.eclipse.jdt.debug.core.IJavaType;
import org.eclipse.jdt.debug.core.IJavaValue;
import org.eclipse.jdt.debug.eval.IEvaluationResult;
import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
import org.eclipse.jdt.internal.debug.ui.display.IDataDisplay;
import org.eclipse.jdt.internal.debug.ui.snippeteditor.JavaSnippetEditor;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbenchPart;

/**
 * Displays the result of an evaluation in the display view
 */
public class DisplayAction extends EvaluateAction {

	/**
	 * @see EvaluateAction#displayResult(IEvaluationResult)
	 */
	protected void displayResult(IEvaluationResult result) {
		final String snippet= result.getSnippet();
		IJavaValue value= result.getValue();
		try {
			String sig= null;
			IJavaType type= value.getJavaType();
			if (type != null) {
				sig= type.getSignature();
			}
			if ("V".equals(sig)) { //$NON-NLS-1$
				displayStringResult(snippet, ActionMessages.getString("DisplayAction.no_result_value")); //$NON-NLS-1$
			} else {
				final String resultString;
				if (sig != null) {
					resultString= MessageFormat.format(ActionMessages.getString("DisplayAction.type_name_pattern"), new Object[] { value.getReferenceTypeName() }); //$NON-NLS-1$
				} else {
					resultString= ""; //$NON-NLS-1$
				}
				getDebugModelPresentation().computeDetail(value, new IValueDetailListener() {
					public void detailComputed(IValue value, String result) {
						displayStringResult(snippet, MessageFormat.format(ActionMessages.getString("DisplayAction.result_pattern"), new Object[] { resultString, result})); //$NON-NLS-1$
					}
				});
			}
		} catch (DebugException x) {
			displayStringResult(snippet, getExceptionMessage(x));
		}
	}

	protected void displayStringResult(final String snippet,final String resultString) {
		final IDataDisplay directDisplay= getDirectDataDisplay();
		final Display display= JDIDebugUIPlugin.getStandardDisplay();
		display.asyncExec(new Runnable() {
			public void run() {
				if (!display.isDisposed()) {
					IDataDisplay dataDisplay= getDataDisplay();
					if (dataDisplay != null) {
						if (directDisplay == null) {
							dataDisplay.displayExpression(snippet);
						}
						dataDisplay.displayExpressionValue(resultString);
					}
				}
				evaluationCleanup();
			}
		});
	}

	protected void run() {
		IWorkbenchPart part= getTargetPart();
		if (part instanceof JavaSnippetEditor) {
			((JavaSnippetEditor) part).evalSelection(JavaSnippetEditor.RESULT_DISPLAY);
			return;
		}
		super.run();
	}

}