/*******************************************************************************
* Copyright (c) 2000, 2006 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.rubypeople.rdt.internal.testunit.ui;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import org.eclipse.compare.CompareConfiguration;
import org.eclipse.compare.CompareViewerPane;
import org.eclipse.compare.IEncodedStreamContentAccessor;
import org.eclipse.compare.ITypedElement;
import org.eclipse.compare.contentmergeviewer.TextMergeViewer;
import org.eclipse.compare.structuremergeviewer.DiffNode;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TrayDialog;
import org.eclipse.jface.text.DocumentEvent;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.jface.text.TextViewer;
import org.eclipse.jface.text.presentation.IPresentationDamager;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.IPresentationRepairer;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class CompareResultDialog extends TrayDialog {
private static class CompareResultMergeViewer extends TextMergeViewer {
private CompareResultMergeViewer(Composite parent, int style, CompareConfiguration configuration) {
super(parent, style, configuration);
}
protected void createControls(Composite composite) {
super.createControls(composite);
//PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, IJUnitHelpContextIds.RESULT_COMPARE_DIALOG);
}
protected void configureTextViewer(TextViewer textViewer) {
if (textViewer instanceof SourceViewer) {
((SourceViewer)textViewer).configure(new CompareResultViewerConfiguration());
}
}
}
public static class CompareResultViewerConfiguration extends SourceViewerConfiguration {
public static class SimpleDamagerRepairer implements IPresentationDamager, IPresentationRepairer {
private IDocument fDocument;
public void setDocument(IDocument document) {
fDocument= document;
}
public IRegion getDamageRegion(ITypedRegion partition, DocumentEvent event, boolean changed) {
return new Region(0, fDocument.getLength());
}
public void createPresentation(TextPresentation presentation, ITypedRegion damage) {
int suffix= CompareResultDialog.fgThis.fSuffix;
int prefix= CompareResultDialog.fgThis.fPrefix;
TextAttribute attr= new TextAttribute(Display.getDefault().getSystemColor(SWT.COLOR_RED), null, SWT.BOLD);
presentation.addStyleRange(new StyleRange(prefix, fDocument.getLength()-suffix-prefix, attr.getForeground(), attr.getBackground(), attr.getStyle()));
}
}
public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
PresentationReconciler reconciler= new PresentationReconciler();
SimpleDamagerRepairer dr= new SimpleDamagerRepairer();
reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
return reconciler;
}
}
private static class CompareElement implements ITypedElement, IEncodedStreamContentAccessor {
private String fContent;
public CompareElement(String content) {
fContent= content;
}
public String getName() {
return "<no name>"; //$NON-NLS-1$
}
public Image getImage() {
return null;
}
public String getType() {
return "txt"; //$NON-NLS-1$
}
public InputStream getContents() {
try {
return new ByteArrayInputStream(fContent.getBytes("UTF-8")); //$NON-NLS-1$
} catch (UnsupportedEncodingException e) {
return new ByteArrayInputStream(fContent.getBytes());
}
}
public String getCharset() throws CoreException {
return "UTF-8"; //$NON-NLS-1$
}
}
private TextMergeViewer fViewer;
private String fExpected;
private String fActual;
private String fTestName;
/* workaround - to make prefix and suffix accessible to the CompareResultViewerConfiguration */
private static CompareResultDialog fgThis;
private int fPrefix;
private int fSuffix;
public CompareResultDialog(Shell parentShell, TestRunInfo element) {
super(parentShell);
fgThis= this;
setShellStyle(getShellStyle() | SWT.RESIZE | SWT.MAX);
fTestName= element.getTestName();
fExpected= element.getExpected();
fActual= element.getActual();
computePrefixSuffix();
}
private void computePrefixSuffix() {
int end= Math.min(fExpected.length(), fActual.length());
int i= 0;
for(; i < end; i++)
if (fExpected.charAt(i) != fActual.charAt(i))
break;
fPrefix= i;
int j= fExpected.length()-1;
int k= fActual.length()-1;
int l= 0;
for (; k >= fPrefix && j >= fPrefix; k--,j--) {
if (fExpected.charAt(j) != fActual.charAt(k))
break;
l++;
}
fSuffix= l;
}
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText(TestUnitMessages.CompareResultDialog_title);
//PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJUnitHelpContextIds.RESULT_COMPARE_DIALOG);
}
protected void createButtonsForButtonBar(Composite parent) {
createButton(parent, IDialogConstants.OK_ID, TestUnitMessages.CompareResultDialog_labelOK, true);
}
protected Control createDialogArea(Composite parent) {
Composite composite = (Composite)super.createDialogArea(parent);
GridLayout layout= new GridLayout();
layout.numColumns= 1;
composite.setLayout(layout);
CompareViewerPane pane = new CompareViewerPane(composite, SWT.BORDER | SWT.FLAT);
pane.setText(fTestName);
GridData data= new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);
data.widthHint= convertWidthInCharsToPixels(120);
data.heightHint= convertHeightInCharsToPixels(13);
pane.setLayoutData(data);
Control previewer= createPreviewer(pane);
pane.setContent(previewer);
GridData gd= new GridData(GridData.FILL_BOTH);
previewer.setLayoutData(gd);
applyDialogFont(parent);
return composite;
}
private Control createPreviewer(Composite parent) {
final CompareConfiguration compareConfiguration= new CompareConfiguration();
compareConfiguration.setLeftLabel(TestUnitMessages.CompareResultDialog_expectedLabel);
compareConfiguration.setLeftEditable(false);
compareConfiguration.setRightLabel(TestUnitMessages.CompareResultDialog_actualLabel);
compareConfiguration.setRightEditable(false);
compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE, Boolean.FALSE);
fViewer= new CompareResultMergeViewer(parent, SWT.NONE, compareConfiguration);
fViewer.setInput(new DiffNode(
new CompareElement(fExpected),
new CompareElement(fActual)));
Control control= fViewer.getControl();
control.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
if (compareConfiguration != null)
compareConfiguration.dispose();
}
});
return control;
}
}