Examples of IUndoContext

org.eclipse.core.commands.operations.IUndoContext

An undo context is used to "tag" operations as being applicable to a certain context. The undo context is used to filter the history of operations available for undo or redo so that only operations appropriate for a given undo context are shown when the application is presenting that context.

The scope of an undo context is defined by the application that is making undo and redo of operations available. Undo contexts may be related to application models, or may be associated with UI objects that are providing undo and redo support.

An undo context may be defined as "matching" another context. This allows applications to provide specialized implementations of an undo context that will appear in the operation history for their matching context. @since 3.1

Examples of org.eclipse.core.commands.operations.IUndoContext


    // no approval is required if we can ascertain that the operation did
    // not originate
    // in our context.
    if (uiInfo != null) {
      IUndoContext originatingContext = (IUndoContext) Util.getAdapter(uiInfo, 
          IUndoContext.class);
      if (originatingContext != null
          && !(originatingContext.matches(context))) {
        return false;
      }
    }


    return true;

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Examples of org.eclipse.core.commands.operations.IUndoContext


        // Reset the undo context for the undo and redo action handlers
        IAction undoAction= getAction(ITextEditorActionConstants.UNDO);
        IAction redoAction= getAction(ITextEditorActionConstants.REDO);
        boolean areOperationActionHandlersInstalled= undoAction instanceof OperationHistoryActionHandler && redoAction instanceof OperationHistoryActionHandler;
        IUndoContext undoContext= getUndoContext();
        if (undoContext != null && areOperationActionHandlersInstalled) {
          ((OperationHistoryActionHandler)undoAction).setContext(undoContext);
          ((OperationHistoryActionHandler)redoAction).setContext(undoContext);
        } else {
          createUndoRedoActions();

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Examples of org.eclipse.core.commands.operations.IUndoContext

   * Subclasses may override or extend.</p>
   *
   * @since 3.1
   */
  protected void createUndoRedoActions() {
    IUndoContext undoContext= getUndoContext();
    if (undoContext != null) {
      // Use actions provided by global undo/redo
      
      // Create the undo action
      OperationHistoryActionHandler undoAction= new UndoActionHandler(getEditorSite(), undoContext);

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Examples of org.eclipse.core.commands.operations.IUndoContext

    IWorkbench workbench = getSite().getWorkbenchWindow().getWorkbench();
    IOperationHistory operationHistory = workbench.getOperationSupport().getOperationHistory();
    
    //System.out.println("Action executed under context: " + undoContext.getLabel());
    
    IUndoContext undoContext = getUndoContext(); // workbench.getOperationSupport().getUndoContext();
    operation.addContext(undoContext);
    try {
      operationHistory.execute(operation, null, null);
    } catch (ExecutionException e1) {
      e1.printStackTrace();

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Examples of org.eclipse.core.commands.operations.IUndoContext


  /*
   * @see org.eclipse.jface.text.IDocumentUndoManager#transferUndoHistory(IDocumentUndoManager)
   */
  public void transferUndoHistory(IDocumentUndoManager manager) {
    IUndoContext oldUndoContext= manager.getUndoContext();
    // Get the history for the old undo context.
    IUndoableOperation [] operations= OperationHistoryFactory.getOperationHistory().getUndoHistory(oldUndoContext);
    for (int i= 0; i < operations.length; i++) {
      // First replace the undo context
      IUndoableOperation op= operations[i];

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Examples of org.eclipse.core.commands.operations.IUndoContext


        // Reset the undo context for the undo and redo action handlers
        IAction undoAction= getAction(ITextEditorActionConstants.UNDO);
        IAction redoAction= getAction(ITextEditorActionConstants.REDO);
        boolean areOperationActionHandlersInstalled= undoAction instanceof OperationHistoryActionHandler && redoAction instanceof OperationHistoryActionHandler;
        IUndoContext undoContext= getUndoContext();
        if (undoContext != null && areOperationActionHandlersInstalled) {
          ((OperationHistoryActionHandler)undoAction).setContext(undoContext);
          ((OperationHistoryActionHandler)redoAction).setContext(undoContext);
        } else {
          createUndoRedoActions();

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Examples of org.eclipse.core.commands.operations.IUndoContext

   * Subclasses may override or extend.</p>
   *
   * @since 3.1
   */
  protected void createUndoRedoActions() {
    IUndoContext undoContext= getUndoContext();
    if (undoContext != null) {
      // Use actions provided by global undo/redo


      // Create the undo action
      OperationHistoryActionHandler undoAction= new UndoActionHandler(getEditorSite(), undoContext);

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Examples of org.eclipse.core.commands.operations.IUndoContext


    actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), new GlobalDeleteActionHandler());


    // For the normal resource undo/redo actions to be active, so that files
    // deleted via the "Delete" action in the staging view can be restored.
    IUndoContext workspaceContext = (IUndoContext) ResourcesPlugin.getWorkspace().getAdapter(IUndoContext.class);
    undoRedoActionGroup = new UndoRedoActionGroup(getViewSite(), workspaceContext, true);
    undoRedoActionGroup.fillActionBars(actionBars);


    actionBars.updateActionBars();
  }

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Examples of org.eclipse.core.commands.operations.IUndoContext


  public void historyNotification(OperationHistoryEvent event) {
    // This method updates the enablement of all content operations
    // when the undo history changes. It could be localized to UNDO and
    // REDO.
    IUndoContext context = getUndoContext();
    if (context != null && event.getOperation().hasContext(context)) {
      Display.getDefault().asyncExec(new Runnable() {
        public void run() {
          updateContentDependantActions();
        }

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Examples of org.eclipse.core.commands.operations.IUndoContext

   *            the view part that owns this action group
   */
  public RefactorActionGroup(IViewPart part) {
    this(part.getSite(), part.getSite().getKeyBindingService());


    IUndoContext workspaceContext = (IUndoContext) ResourcesPlugin
        .getWorkspace().getAdapter(IUndoContext.class);
    fUndoRedoActionGroup = new UndoRedoActionGroup(part.getViewSite(),
        workspaceContext, true);
  }

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