Java TextViewer类代码示例

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
public TMEditor(IGrammar grammar, ITokenProvider tokenProvider, String text) {
	shell = new Shell();
	viewer = new TextViewer(shell, SWT.NONE);
	document = new Document();
	viewer.setDocument(document);
	commands = new ArrayList<>();
	collector = new StyleRangesCollector();

	setAndExecute(text);

	reconciler = new TMPresentationReconciler();
	reconciler.addTMPresentationReconcilerListener(collector);
	reconciler.setGrammar(grammar);
	reconciler.setTokenProvider(tokenProvider);
	reconciler.install(viewer);

}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * �����༭��
 * 
 * @return
 */
public void createTextArea(TextViewerUndoManager undo) {
	if (wv == null || wv.isDisposed()) {

		tv = new TextViewer(this, SWT.WRAP | SWT.V_SCROLL);
		StyledText styledText = tv.getTextWidget();
		if (undo != null) {
			undo.disconnect();
			undo.connect(tv);
		} else
			tvum = new TextViewerUndoManager(100);
		tv.setUndoManager(tvum);
		tv.activatePlugins();
		setCurrentTextArea(styledText);
		blackTextArea = new blackTextArea(styledText, this);
	} else {
		// wv.disposeTextArea();
		wv.createTextArea(null);
	}
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
public void createTextArea(IDocument iDocument){

	if(b.text != null && !b.text.isDisposed()){
		disposeTextArea();
	}
	b.tv = new TextViewer(b, SWT.V_SCROLL|SWT.WRAP);
	b.text = b.tv.getTextWidget();
	b.text.setVisible(false);
	b.text.setParent(this);
	setStyledTextLayout(x);
	b.blackTextArea = new blackTextArea(b.text,b);
	b.blackTextArea.writingView();
	b.tv.setUndoManager(new TextViewerUndoManager(100));
	b.tv.activatePlugins();
	if(b.ba.isFullScreenWritingView())
		b.ba.changeColor(b.ba.lastForeColor, b.ba.lastBackColor);
	if(iDocument != null) {
		b.tv.setDocument(iDocument);
	}
	addSlider();
	layout();
	b.text.setFocus();
	b.text.setVisible(true);
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
@Override
protected void configureTextViewer(TextViewer viewer) {
	if (viewer instanceof SourceViewer) {
		SourceViewer sourceViewer = (SourceViewer) viewer;
		if (fSourceViewer == null)
			fSourceViewer = new ArrayList<>();
		if (!fSourceViewer.contains(sourceViewer))
			fSourceViewer.add(sourceViewer);
		TypeScriptTextTools tools = JSDTTypeScriptUIPlugin.getDefault().getJavaTextTools();
		if (tools != null) {
			IEditorInput editorInput = getEditorInput(sourceViewer);
			sourceViewer.unconfigure();
			if (editorInput == null) {
				sourceViewer.configure(getSourceViewerConfiguration(sourceViewer, null));
				return;
			}
			getSourceViewerConfiguration(sourceViewer, editorInput);
		}
	}
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
private CTabItem createDMNtab()
{
  CTabItem dmnTab = new CTabItem(tabs, SWT.NONE);
  dmnTab.setText("DMN");
  // assign a XML or DMN icon
  TextViewer dmnViewer = new TextViewer(tabs, SWT.V_SCROLL);
  dmnViewer.setDocument(new Document());
  dmnTab.setControl(dmnViewer.getTextWidget());
  dmnTab.addListener(SWT.SELECTED, evt -> {
    dmnViewer.getDocument().set(toDMN(table.model));
  });
  
  tabs.addSelectionListener(new SelectionAdapter() {
    @Override
    public void widgetSelected(SelectionEvent e) {
      tabs.getSelection().notifyListeners(SWT.SELECTED, new Event());
    }
   });
  return dmnTab;
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * Tries to tell to the Xtext viewer whether the registered
 * auto edit strategies should be ignored.
 * 
 * @param ignore <code>true</code> if the strategies should be ignored.
 */
public void ignoreAutoEditStrategies(boolean ignore){
	try {
		// org.eclipse.jface.text.TextViewer#ignoreAutoEditStrategies(boolean) is protected by definition.
		// XtextSourceViewer does not extend its visibility so we have to bypass it
		// invoking the method via Reflection API.
		// N.B: This way of using reflection is a "violation" of OOP basis but
		// it is also a trick that works fine.
		Method declaredMethod = TextViewer.class.getDeclaredMethod("ignoreAutoEditStrategies",boolean.class); //$NON-NLS-1$
		declaredMethod.setAccessible(true);
		declaredMethod.invoke(getXtextSourceviewer(), ignore);
	} catch (Exception e) {
		JRExpressionsActivator.getInstance().getLog().log(
				new Status(IStatus.ERROR, JRExpressionsUIPlugin.PLUGIN_ID, 
						Messages.StyledTextXtextAdapter2_AutoEditStrategiesError, e));
	}
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
@Override
protected void configureTextViewer(final TextViewer textViewer)
{
	ThemePlugin.getDefault().getControlThemerFactory().apply(textViewer);

	// Force line highlight color. We need to perform this after the line painter is attached, which happens after
	// the return of this method. Scheduling async seems to work.
	UIUtils.getDisplay().asyncExec(new Runnable()
	{

		public void run()
		{
			CursorLinePainter p = getCursorLinePainterInstalled(textViewer);
			if (p != null)
			{
				p.setHighlightColor(getColorManager().getColor(getCurrentTheme().getLineHighlightAgainstBG()));
			}
		}
	});
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
private CursorLinePainter getCursorLinePainterInstalled(TextViewer viewer)
{
	Listener[] listeners = viewer.getTextWidget().getListeners(3001/* StyledText.LineGetBackground */);
	for (Listener listener : listeners)
	{
		if (listener instanceof TypedListener)
		{
			TypedListener typedListener = (TypedListener) listener;
			if (typedListener.getEventListener() instanceof CursorLinePainter)
			{
				return (CursorLinePainter) typedListener.getEventListener();
			}
		}
	}
	return null;
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
@Override
protected void handleDispose()
{
	// HACK We force the widget command to be nulled out so it can be garbage collected. Might want to
	// report a bug with eclipse to clean this up.
	try
	{
		Field f = TextViewer.class.getDeclaredField("fWidgetCommand"); //$NON-NLS-1$
		if (f != null)
		{
			f.setAccessible(true);
			f.set(this, null);
		}
	}
	catch (Throwable t)
	{
		// ignore
	}
	finally
	{
		super.handleDispose();
	}
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
@Override
protected void configureTextViewer(TextViewer textViewer) {
	if (!(textViewer instanceof SourceViewer))
		return;

	if (fPreferenceStore == null) {
		fSourceViewerConfigurations= new ArrayList<SourceViewerConfiguration>(3);
		fPreferenceStore= JavaPlugin.getDefault().getCombinedPreferenceStore();
		fPreferenceChangeListener= new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				Iterator<SourceViewerConfiguration> iter= fSourceViewerConfigurations.iterator();
				while (iter.hasNext())
					((PropertiesFileSourceViewerConfiguration)iter.next()).handlePropertyChangeEvent(event);
				invalidateTextPresentation();
			}
		};
		fPreferenceStore.addPropertyChangeListener(fPreferenceChangeListener);
	}

	SourceViewerConfiguration sourceViewerConfiguration= new PropertiesFileSourceViewerConfiguration(JavaPlugin.getDefault().getJavaTextTools().getColorManager(), fPreferenceStore, null,
			getDocumentPartitioning());

	fSourceViewerConfigurations.add(sourceViewerConfiguration);
	((SourceViewer)textViewer).configure(sourceViewerConfiguration);
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
@Override
protected void configureTextViewer(TextViewer viewer) {
	if (viewer instanceof SourceViewer) {
		SourceViewer sourceViewer= (SourceViewer)viewer;
		if (fSourceViewer == null)
			fSourceViewer= new ArrayList<SourceViewer>();
		if (!fSourceViewer.contains(sourceViewer))
			fSourceViewer.add(sourceViewer);
		JavaTextTools tools= JavaCompareUtilities.getJavaTextTools();
		if (tools != null) {
			IEditorInput editorInput= getEditorInput(sourceViewer);
			sourceViewer.unconfigure();
			if (editorInput == null) {
				sourceViewer.configure(getSourceViewerConfiguration(sourceViewer, null));
				return;
			}
			getSourceViewerConfiguration(sourceViewer, editorInput);
		}
	}
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * Create the composite.
 * @param parent
 * @param style
 */
public ExplanationComposite(Composite parent, int style) {
	super(parent, style);
	setLayout(new GridLayout(1, false));
	
	SashForm sashForm = new SashForm(this, SWT.NONE);
	sashForm.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
	sashForm.setLocation(0, 0);
	
	TextViewer textViewer = new TextViewer(sashForm, SWT.BORDER | SWT.READ_ONLY | SWT.WRAP);
	styledTextExplanation = textViewer.getTextWidget();
	styledTextExplanation.setEditable(false);
	
	composite = new Composite(sashForm, SWT.NONE);
	composite.setLayout(new FillLayout(SWT.HORIZONTAL));
	sashForm.setWeights(new int[] {1, 2});

}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * Create contents of the dialog.
 * @param parent
 */
@Override
protected Control createDialogArea(Composite parent) {
	Composite container = (Composite) super.createDialogArea(parent);
	container.setLayout(new GridLayout(1, false));
	
	Label lblFixes = new Label(container, SWT.NONE);
	lblFixes.setText("Fixes");
	
	tableViewer = new TableViewer(container, SWT.BORDER | SWT.FULL_SELECTION);
	table = tableViewer.getTable();
	table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
	
	TextViewer textViewer = new TextViewer(container, SWT.BORDER);
	StyledText styledText = textViewer.getTextWidget();
	styledText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

	tableViewer.setContentProvider(new QuickfixContentProvider());
	tableViewer.setLabelProvider(new QuickfixLabelProvider());
	tableViewer.setInput(quickfixes);
	return container;
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * A semi-hack... This uses stuff that may change at any time in Eclipse.  
 * In the java editor, the projection annotation model contains the collapsible regions which correspond to methods (and other areas
 * such as import groups).
 * 
 * This may work in other editor types as well... TBD
 */
protected int transform(ITextEditor editor, IDocument document, ITextSelection currentSelection,
		ExecutionEvent event) throws BadLocationException {

	ITextViewerExtension viewer = MarkUtils.getITextViewer(editor);
	if (viewer instanceof ProjectionViewer) {
		ProjectionAnnotationModel projection = ((ProjectionViewer)viewer).getProjectionAnnotationModel();
		@SuppressWarnings("unchecked") // the method name says it all
		Iterator<Annotation> pit = projection.getAnnotationIterator();
		while (pit.hasNext()) {
			Position p = projection.getPosition(pit.next());
			if (p.includes(currentSelection.getOffset())) {
				if (isUniversalPresent()) {
					// Do this here to prevent subsequent scrolling once range is revealed
					MarkUtils.setSelection(editor, new TextSelection(document, p.offset, 0));
				}
				// the viewer is pretty much guaranteed to be a TextViewer
				if (viewer instanceof TextViewer) {
					((TextViewer)viewer).revealRange(p.offset, p.length);
				}
				break;
			}
		}
	}
	return NO_OFFSET;		
}
 

import org.eclipse.jface.text.TextViewer; //导入依赖的package包/类
/**
 * @param ps
 * @param provider
 */
public boolean perform(TextSelectionUtils ps, final char c, TextViewer viewer, IScopeCreatingCharsProvider provider) {
    linkOffset = -1;
    linkExitPos = -1;
    linkLen = 0;

    try {
        IDocument doc = ps.getDoc();

        DocCmd docCmd = new DocCmd(ps.getAbsoluteCursorOffset(), ps.getSelLength(), Character.toString(c));
        if (!handleScopeCreationChar(doc, docCmd, ps, provider, c)) {
            return false; //not handled
        }
        if (linkOffset == -1 || linkExitPos == -1) {
            return true; //it was handled (without the link)
        }

        if (viewer != null) {
            viewer.setSelectedRange(linkOffset, linkLen);
        }

    } catch (Exception e) {
        Log.log(e);
    }
    return true;
}