Examples with IDocumentUndoListener org.eclipse.text.undo.IDocumentUndoListener used on opensource projects

Example 1 with IDocumentUndoListener

use of org.eclipse.text.undo.IDocumentUndoListener in project eclipse.platform.text by eclipse.

the class TextViewerUndoManagerTest method internalTestTransferNonTextOp.

// --- DocumentUndoManager only ---
public void internalTestTransferNonTextOp(final boolean isUndoable) throws Exception {
    Object context = new Object();
    DocumentUndoManager tempUndoManager = new DocumentUndoManager(new Document());
    tempUndoManager.connect(context);
    IUndoableOperation operation = new AbstractOperation("") {

        @Override
        public boolean canUndo() {
            return isUndoable;
        }

        @Override
        public IStatus execute(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
            return Status.OK_STATUS;
        }

        @Override
        public IStatus redo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
            return Status.OK_STATUS;
        }

        @Override
        public IStatus undo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
            return Status.OK_STATUS;
        }
    };
    operation.addContext(tempUndoManager.getUndoContext());
    OperationHistoryFactory.getOperationHistory().add(operation);
    assertEquals(isUndoable, tempUndoManager.undoable());
    final DocumentUndoManager undoManager = new DocumentUndoManager(new Document());
    Object newContext = new Object();
    undoManager.connect(newContext);
    undoManager.addDocumentUndoListener(new IDocumentUndoListener() {

        @Override
        public void documentUndoNotification(DocumentUndoEvent event) {
            fail();
        }
    });
    undoManager.transferUndoHistory(tempUndoManager);
    tempUndoManager.disconnect(context);
    assertEquals(isUndoable, undoManager.undoable());
    undoManager.undo();
    assertEquals(false, undoManager.undoable());
    undoManager.disconnect(newContext);
}

Example 2 with IDocumentUndoListener

use of org.eclipse.text.undo.IDocumentUndoListener in project eclipse.platform.text by eclipse.

the class TextViewerUndoManagerTest method testCanUndo.

@Test
public void testCanUndo() throws Exception {
    IDocument doc = new Document();
    final DocumentUndoManager undoManager = new DocumentUndoManager(doc);
    Object context = new Object();
    undoManager.connect(context);
    undoManager.addDocumentUndoListener(new IDocumentUndoListener() {

        @Override
        public void documentUndoNotification(DocumentUndoEvent event) {
            if (event.getEventType() == DocumentUndoEvent.ABOUT_TO_UNDO)
                assertEquals(true, undoManager.undoable());
            else if (event.getEventType() == DocumentUndoEvent.UNDONE)
                assertEquals(false, undoManager.undoable());
        }
    });
    doc.set("foo");
    assertEquals(true, undoManager.undoable());
    undoManager.undo();
    assertEquals(false, undoManager.undoable());
    undoManager.disconnect(context);
}