/*******************************************************************************
* Copyright (c) 2000, 2017 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.dltk.internal.testing.ui;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
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.dltk.internal.testing.model.TestElement;
import org.eclipse.dltk.testing.DLTKTestingMessages;
import org.eclipse.dltk.testing.DLTKTestingPlugin;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
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.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;
import org.eclipse.ui.PlatformUI;
public class CompareResultDialog extends TrayDialog {
private static final String PREFIX_SUFFIX_PROPERTY = "org.eclipse.jdt.internal.junit.ui.CompareResultDialog.prefixSuffix"; //$NON-NLS-1$
private static class CompareResultMergeViewer extends TextMergeViewer {
private CompareResultMergeViewer(Composite parent, int style,
CompareConfiguration configuration) {
super(parent, style, configuration);
}
@Override
protected void createControls(Composite composite) {
super.createControls(composite);
PlatformUI.getWorkbench().getHelpSystem().setHelp(composite,
IDLTKTestingHelpContextIds.RESULT_COMPARE_DIALOG);
}
// protected void createToolItems(ToolBarManager tbm) {
// ResourceBundle bundle= CompareUI.getResourceBundle();
// tbm.add(new IgnoreWhiteSpaceAction(bundle,
// getCompareConfiguration()));
// super.createToolItems(tbm);
// }
@Override
protected void configureTextViewer(TextViewer textViewer) {
if (textViewer instanceof SourceViewer) {
int[] prefixSuffixOffsets = (int[]) getCompareConfiguration()
.getProperty(PREFIX_SUFFIX_PROPERTY);
((SourceViewer) textViewer)
.configure(new CompareResultViewerConfiguration(
prefixSuffixOffsets));
}
}
}
private static class CompareResultViewerConfiguration
extends SourceViewerConfiguration {
private static class SimpleDamagerRepairer
implements IPresentationDamager, IPresentationRepairer {
private IDocument fDocument;
private final int[] fPrefixSuffixOffsets2;
public SimpleDamagerRepairer(int[] prefixSuffixOffsets) {
fPrefixSuffixOffsets2 = prefixSuffixOffsets;
}
@Override
public void setDocument(IDocument document) {
fDocument = document;
}
@Override
public IRegion getDamageRegion(ITypedRegion partition,
DocumentEvent event, boolean changed) {
return new Region(0, fDocument.getLength());
}
@Override
public void createPresentation(TextPresentation presentation,
ITypedRegion damage) {
int prefix = fPrefixSuffixOffsets2[0];
int suffix = fPrefixSuffixOffsets2[1];
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()));
}
}
private final int[] fPrefixSuffixOffsets;
public CompareResultViewerConfiguration(int[] prefixSuffixOffsets) {
fPrefixSuffixOffsets = prefixSuffixOffsets;
}
@Override
public IPresentationReconciler getPresentationReconciler(
ISourceViewer sourceViewer) {
PresentationReconciler reconciler = new PresentationReconciler();
SimpleDamagerRepairer dr = new SimpleDamagerRepairer(
fPrefixSuffixOffsets);
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;
}
@Override
public String getName() {
return "<no name>"; //$NON-NLS-1$
}
@Override
public Image getImage() {
return null;
}
@Override
public String getType() {
return "txt"; //$NON-NLS-1$
}
@Override
public InputStream getContents() {
return new ByteArrayInputStream(
fContent.getBytes(StandardCharsets.UTF_8));
}
@Override
public String getCharset() throws CoreException {
return "UTF-8"; //$NON-NLS-1$
}
}
private TextMergeViewer fViewer;
private String fExpected;
private String fActual;
private String fTestName;
/**
* Lengths of common prefix and suffix. Note: this array is passed to the
* DamagerRepairer and the lengths are updated on content change.
*/
private final int[] fPrefixSuffix = new int[2];
public CompareResultDialog(Shell parentShell, TestElement element) {
super(parentShell);
setShellStyle(SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX);
setFailedTest(element);
}
private void setFailedTest(TestElement failedTest) {
fTestName = failedTest.getTestName();
fExpected = failedTest.getExpected();
fActual = failedTest.getActual();
computePrefixSuffix();
}
@Override
protected IDialogSettings getDialogBoundsSettings() {
return DLTKTestingPlugin.getDefault()
.getDialogSettingsSection(getClass().getName());
}
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;
fPrefixSuffix[0] = i;
int j = fExpected.length() - 1;
int k = fActual.length() - 1;
int l = 0;
for (; k >= i && j >= i; k--, j--) {
if (fExpected.charAt(j) != fActual.charAt(k))
break;
l++;
}
fPrefixSuffix[1] = l;
}
@Override
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText(DLTKTestingMessages.CompareResultDialog_title);
PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell,
IDLTKTestingHelpContextIds.RESULT_COMPARE_DIALOG);
}
@Override
protected void createButtonsForButtonBar(Composite parent) {
createButton(parent, IDialogConstants.OK_ID,
DLTKTestingMessages.CompareResultDialog_labelOK, true);
}
@Override
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(
DLTKTestingMessages.CompareResultDialog_expectedLabel);
compareConfiguration.setLeftEditable(false);
compareConfiguration.setRightLabel(
DLTKTestingMessages.CompareResultDialog_actualLabel);
compareConfiguration.setRightEditable(false);
compareConfiguration.setProperty(CompareConfiguration.IGNORE_WHITESPACE,
Boolean.FALSE);
compareConfiguration.setProperty(PREFIX_SUFFIX_PROPERTY, fPrefixSuffix);
fViewer = new CompareResultMergeViewer(parent, SWT.NONE,
compareConfiguration);
setCompareViewerInput();
Control control = fViewer.getControl();
control.addDisposeListener(e -> compareConfiguration.dispose());
return control;
}
private void setCompareViewerInput() {
if (!fViewer.getControl().isDisposed())
fViewer.setInput(new DiffNode(new CompareElement(fExpected),
new CompareElement(fActual)));
}
public void setInput(TestElement failedTest) {
setFailedTest(failedTest);
setCompareViewerInput();
}
}