Java Code Examples for org.eclipse.jface.text.source.ISourceViewer#revealRange()

public void open(IOutlineNode node, ISourceViewer textViewer) {
	if (node != null) {
		ITextRegion textRegion = node.getSignificantTextRegion();
		if (textRegion != null && textRegion != ITextRegion.EMPTY_REGION) {
			int offset = textRegion.getOffset();
			int length = textRegion.getLength();
			textViewer.setRangeIndication(offset, length, true);
			textViewer.revealRange(offset, length);
			textViewer.setSelectedRange(offset, length);
		} else {
			node.tryReadOnly(new IUnitOfWork.Void<EObject>() {
				@Override
				public void process(EObject state) throws Exception {
					openEObject(state);
				}
			});
		}
		
	}
}
 

/**
 * @since 2.3
 */
protected void selectAndRevealQuickfix(IQuickAssistInvocationContext invocationContext, Set<Annotation> applicableAnnotations, List<ICompletionProposal> completionProposals) {
       if (completionProposals.isEmpty()) {
       	return;
       }
	if (!(invocationContext instanceof QuickAssistInvocationContext && ((QuickAssistInvocationContext) invocationContext).isSuppressSelection())) {
		ISourceViewer sourceViewer = invocationContext.getSourceViewer();
		IAnnotationModel annotationModel = sourceViewer.getAnnotationModel();
		Iterator<Annotation> iterator = applicableAnnotations.iterator();
		while (iterator.hasNext()) {
			Position pos = annotationModel.getPosition(iterator.next());
			if (pos != null) {
				sourceViewer.setSelectedRange(pos.getOffset(), pos.getLength());
				sourceViewer.revealRange(pos.getOffset(), pos.getLength());
				break;
			}
		}
	}
}
 

protected void leave(int offset, int len, boolean isWidget) {
	addToHistory();
	ISourceViewer viewer = getViewer();
	if (viewer != null) {
		int off = (isWidget ? MarkUtils.widget2ModelOffset(getViewer(), offset) : offset);
		viewer.setSelectedRange(off, len);
		viewer.revealRange(off,0);
	}
	super.leave(true);
}
 

public void run(IAction action) {
    if (targetEditor == null) return;
    ISourceViewer sourceViewer= targetEditor.getViewer();
    IDocument document= sourceViewer.getDocument();
    if (document == null)
        return;
    ITextSelection selection = (ITextSelection) targetEditor.getSelectionProvider().getSelection();
    SubStatusLineManager slm = 
        (SubStatusLineManager) targetEditor.getEditorSite().getActionBars().getStatusLineManager();
    
    int selectionLength= Math.abs(selection.getLength());
    if (selectionLength > 1) {
        slm.setErrorMessage(TexlipsePlugin.getResourceString("gotoMatchingBracketNotSelected"));
        slm.setVisible(true);
        sourceViewer.getTextWidget().getDisplay().beep();
        return;
    }
    
    int sourceCaretOffset= selection.getOffset() + selection.getLength();

    TexPairMatcher fBracketMatcher = new TexPairMatcher("{}[]()");
    
    IRegion region= fBracketMatcher.match(document, sourceCaretOffset);
    if (region == null) {
        slm.setErrorMessage(TexlipsePlugin.getResourceString("gotoMatchingBracketNotFound"));
        slm.setVisible(true);            
        sourceViewer.getTextWidget().getDisplay().beep();
        return;
    }

    int offset= region.getOffset();
    int length= region.getLength();

    if (length < 1) return;

    int anchor = fBracketMatcher.getAnchor();
    int targetOffset= (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1: offset + length;

    if (selection.getLength() < 0)
        targetOffset -= selection.getLength();

    sourceViewer.setSelectedRange(targetOffset, selection.getLength());
    sourceViewer.revealRange(targetOffset, selection.getLength());
}
 

/**
 * Highlights and moves to a corresponding element in editor
 * 
 * @param reference
 *            corresponding entity in editor
 * @param moveCursor
 *            if true, moves cursor to the reference
 */
private void setSelection(NavigationBarItem reference, boolean moveCursor) {
	if (reference == null) {
		return;
	}

	if (moveCursor) {
		markInNavigationHistory();
	}

	ISourceViewer sourceViewer = getSourceViewer();
	if (sourceViewer == null) {
		return;
	}
	StyledText textWidget = sourceViewer.getTextWidget();
	if (textWidget == null) {
		return;
	}
	try {
		Location start = reference.getSpans().get(0).getStart();
		Location end = reference.getSpans().get(0).getEnd();

		if (start == null || end == null)
			return;

		ITypeScriptFile tsFile = getTypeScriptFile();

		int offset = tsFile.getPosition(start);
		int length = tsFile.getPosition(end) - offset;

		if (offset < 0 || length < 0 || length > sourceViewer.getDocument().getLength()) {
			return;
		}
		textWidget.setRedraw(false);

		// Uncomment that if we wish to select only variable and not the
		// whole block.
		// but there is a bug with this code with
		// private a: string. it's the first 'a' (of private) which is
		// selected and not the second.
		// String documentPart = sourceViewer.getDocument().get(offset,
		// length);
		//
		// // Try to find name because position returns for whole block
		// String name = reference.getText();
		// if (name != null) {
		// int nameoffset = documentPart.indexOf(name);
		// if (nameoffset != -1) {
		// offset += nameoffset;
		// length = name.length();
		// }
		// }
		if (length > 0) {
			setHighlightRange(offset, length, moveCursor);
		}

		if (!moveCursor) {
			return;
		}

		if (offset > -1 && length > 0) {
			sourceViewer.revealRange(offset, length);
			// Selected region begins one index after offset
			sourceViewer.setSelectedRange(offset, length);
			markInNavigationHistory();
		}
	} catch (Exception e) {

	} finally {
		textWidget.setRedraw(true);
	}
}
 

/**
 * Jumps to the matching bracket.
 */
public void gotoMatchingBracket() {

	ISourceViewer sourceViewer = getSourceViewer();
	IDocument document = sourceViewer.getDocument();
	if (document == null)
		return;

	IRegion selection = getSignedSelection(sourceViewer);

	int selectionLength = Math.abs(selection.getLength());
	if (selectionLength > 1) {
		setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_invalidSelection);
		sourceViewer.getTextWidget().getDisplay().beep();
		return;
	}

	// #26314
	int sourceCaretOffset = selection.getOffset() + selection.getLength();
	if (isSurroundedByBrackets(document, sourceCaretOffset))
		sourceCaretOffset -= selection.getLength();

	IRegion region = fBracketMatcher.match(document, sourceCaretOffset);
	if (region == null) {
		setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_noMatchingBracket);
		sourceViewer.getTextWidget().getDisplay().beep();
		return;
	}

	int offset = region.getOffset();
	int length = region.getLength();

	if (length < 1)
		return;

	int anchor = fBracketMatcher.getAnchor();
	// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
	int targetOffset = (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1 : offset + length;

	boolean visible = false;
	if (sourceViewer instanceof ITextViewerExtension5) {
		ITextViewerExtension5 extension = (ITextViewerExtension5) sourceViewer;
		visible = (extension.modelOffset2WidgetOffset(targetOffset) > -1);
	} else {
		IRegion visibleRegion = sourceViewer.getVisibleRegion();
		// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
		visible = (targetOffset >= visibleRegion.getOffset()
				&& targetOffset <= visibleRegion.getOffset() + visibleRegion.getLength());
	}

	if (!visible) {
		setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_bracketOutsideSelectedElement);
		sourceViewer.getTextWidget().getDisplay().beep();
		return;
	}

	if (selection.getLength() < 0)
		targetOffset -= selection.getLength();

	sourceViewer.setSelectedRange(targetOffset, selection.getLength());
	sourceViewer.revealRange(targetOffset, selection.getLength());
}
 

/**
 * Jumps to the matching bracket.
 */
public void gotoMatchingBracket() {

	ISourceViewer sourceViewer= getSourceViewer();
	IDocument document= sourceViewer.getDocument();
	if (document == null)
		return;

	IRegion selection= getSignedSelection(sourceViewer);
	if (fPreviousSelections == null)
		initializePreviousSelectionList();

	IRegion region= fBracketMatcher.match(document, selection.getOffset(), selection.getLength());
	if (region == null) {
		region= fBracketMatcher.findEnclosingPeerCharacters(document, selection.getOffset(), selection.getLength());
		initializePreviousSelectionList();
		fPreviousSelections.add(selection);
	} else {
		if (fPreviousSelections.size() == 2) {
			if (!selection.equals(fPreviousSelections.get(1))) {
				initializePreviousSelectionList();
			}
		} else if (fPreviousSelections.size() == 3) {
			if (selection.equals(fPreviousSelections.get(2)) && !selection.equals(fPreviousSelections.get(0))) {
				IRegion originalSelection= fPreviousSelections.get(0);
				sourceViewer.setSelectedRange(originalSelection.getOffset(), originalSelection.getLength());
				sourceViewer.revealRange(originalSelection.getOffset(), originalSelection.getLength());
				initializePreviousSelectionList();
				return;
			}
			initializePreviousSelectionList();
		}
	}

	if (region == null) {
		setStatusLineErrorMessage(JavaEditorMessages.GotoMatchingBracket_error_noMatchingBracket);
		sourceViewer.getTextWidget().getDisplay().beep();
		return;
	}

	int offset= region.getOffset();
	int length= region.getLength();

	if (length < 1)
		return;

	int anchor= fBracketMatcher.getAnchor();
	// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
	int targetOffset= (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1 : offset + length - 1;

	boolean visible= false;
	if (sourceViewer instanceof ITextViewerExtension5) {
		ITextViewerExtension5 extension= (ITextViewerExtension5) sourceViewer;
		visible= (extension.modelOffset2WidgetOffset(targetOffset) > -1);
	} else {
		IRegion visibleRegion= sourceViewer.getVisibleRegion();
		// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
		visible= (targetOffset >= visibleRegion.getOffset() && targetOffset <= visibleRegion.getOffset() + visibleRegion.getLength());
	}

	if (!visible) {
		setStatusLineErrorMessage(JavaEditorMessages.GotoMatchingBracket_error_bracketOutsideSelectedElement);
		sourceViewer.getTextWidget().getDisplay().beep();
		return;
	}

	int adjustment= getOffsetAdjustment(document, selection.getOffset() + selection.getLength(), selection.getLength());
	targetOffset+= adjustment;
	int direction= (selection.getLength() == 0) ? 0 : ((selection.getLength() > 0) ? 1 : -1);
	if (fPreviousSelections.size() == 1 && direction < 0) {
		targetOffset++;
	}

	if (fPreviousSelections.size() > 0) {
		fPreviousSelections.add(new Region(targetOffset, direction));
	}
	sourceViewer.setSelectedRange(targetOffset, direction);
	sourceViewer.revealRange(targetOffset, direction);
}
 

/**
 * implementation copied from org.eclipse.ui.externaltools.internal.ant.editor.PlantyEditor#setSelection
 */
public void setSelection(int offset, int length) {
    ISourceViewer sourceViewer = getSourceViewer();
    sourceViewer.setSelectedRange(offset, length);
    sourceViewer.revealRange(offset, length);
}