Examples of IOperationHistory

org.eclipse.core.commands.operations.IOperationHistory

IOperationHistory tracks a history of operations that can be undone or redone. Operations are added to the history once they have been initially executed. Clients may choose whether to have the operations history perform the initial execution or to simply add an already-executed operation to the history.

Once operations are added to the history, the methods {@link #canRedo(IUndoContext)} and {@link #canUndo(IUndoContext)} are used todetermine whether there is an operation available for undo and redo in a given undo context. The context-based protocol implies that there is only one operation that can be undone or redone at a given time in a given context. This is typical of a linear undo model, when only the most recently executed operation is available for undo. When this protocol is used, a linear model is enforced by the history.

It is up to clients to determine how to maintain a history that is invalid or stale. For example, when the most recent operation for a context cannot be performed, clients may wish to dispose the history for that context.

Additional protocol allows direct undo and redo of a specified operation, regardless of its position in the history. When a more flexible undo model is supported, these methods can be implemented to undo and redo directly specified operations. If an implementer of IOperationHistory does not allow direct undo and redo, these methods can return a status indicating that it is not allowed.

Listeners ( {@link IOperationHistoryListener}) can listen for notifications about changes in the history (operations added or removed), and for notification before and after any operation is executed, undone or redone. Notification of operation execution only occurs when clients direct the history to execute the operation. If the operation is added after it is executed, there can be no notification of its execution.

{@link IOperationApprover} defines an interface for approving an undo or redobefore it occurs. This is useful for injecting policy-decisions into the undo model - whether direct undo and redo are supported, or warning the user about certain kinds of operations. It can also be used when clients maintain state related to an operation and need to determine whether an undo or redo will cause any conflicts with their local state.
@since 3.1

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

          return shell;
        return null;
      }
    };


    IOperationHistory operationHistory= PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
    try {
      operationHistory.execute(operation, null, context);
    } catch (ExecutionException e) {
      Bundle bundle= Platform.getBundle(PlatformUI.PLUGIN_ID);
      ILog log= Platform.getLog(bundle);
      String msg= getString(fBundle, fPrefix + "error.dialog.message", fPrefix + "error.dialog.message"); //$NON-NLS-2$ //$NON-NLS-1$
      log.log(new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, IStatus.OK, msg, e));

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

    }


    if (fVerticalRuler != null)
      fVerticalRuler= null;


    IOperationHistory history= OperationHistoryFactory.getOperationHistory();
    if (history != null) {
      if (fNonLocalOperationApprover != null)
        history.removeOperationApprover(fNonLocalOperationApprover);
      if (fLinearUndoViolationApprover != null)
        history.removeOperationApprover(fLinearUndoViolationApprover);
    }
    fNonLocalOperationApprover= null;
    fLinearUndoViolationApprover= null;
    
    super.dispose();

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

      PlatformUI.getWorkbench().getHelpSystem().setHelp(redoAction, IAbstractTextEditorHelpContextIds.REDO_ACTION);
      redoAction.setActionDefinitionId(IWorkbenchActionDefinitionIds.REDO);
      registerUndoRedoAction(ITextEditorActionConstants.REDO, redoAction);


      // Install operation approvers
      IOperationHistory history= OperationHistoryFactory.getOperationHistory();


      // The first approver will prompt when operations affecting outside elements are to be undone or redone.
      if (fNonLocalOperationApprover != null)
        history.removeOperationApprover(fNonLocalOperationApprover);
      fNonLocalOperationApprover= getUndoRedoOperationApprover(undoContext);
      history.addOperationApprover(fNonLocalOperationApprover);


      // The second approver will prompt from this editor when an undo is attempted on an operation
      // and it is not the most recent operation in the editor.
      if (fLinearUndoViolationApprover != null)
        history.removeOperationApprover(fLinearUndoViolationApprover);
      fLinearUndoViolationApprover= new LinearUndoViolationUserApprover(undoContext, this);
      history.addOperationApprover(fLinearUndoViolationApprover);


    } else {
      // Use text operation actions (pre 3.1 style)
      
      ResourceAction action;

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

        return null;
      }
    };


    IUndoableOperation operation= new CreateMarkersOperation(fMarkerType, attributes, resource, name);
    IOperationHistory operationHistory= PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
    try {
      operationHistory.execute(operation, null, context);
    } catch (ExecutionException x) {
      Bundle bundle= Platform.getBundle(PlatformUI.PLUGIN_ID);
      ILog log= Platform.getLog(bundle);
      String msg= getString(fBundle, fPrefix + "error.dialog.message", fPrefix + "error.dialog.message"); //$NON-NLS-2$ //$NON-NLS-1$
      log.log(new Status(IStatus.ERROR, PlatformUI.PLUGIN_ID, IStatus.OK, msg, x));

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

    editLayer.repaint();
  }
   
  private void executeAbstractOperation(IUndoableOperation operation) {
    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.IOperationHistory

        String joinEntityName = _joinEntityNameText.getText();
        boolean flatten = _flattenButton.getSelection();


        NewManyToManyRelationshipOperation operation = new NewManyToManyRelationshipOperation(_sourceEntity, _destinationEntity, createRelationship, name, createInverseRelationship, inverseName, joinEntityName, flatten);
        operation.addContext(EOModelUtils.getUndoContext(_sourceEntity));
        IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
        operationHistory.execute(operation, null, null);
        // _sourceEntity.joinInManyToManyWith(_destinationEntity,
        // createRelationship, name, createInverseRelationship,
        // inverseName, joinEntityName, flatten);
      } else {
        String fkName = null;
        String fkColumnName = null;
        boolean toMany = _toManyButton.getSelection();
        String inverseFKName = null;
        String inverseFKColumnName = null;
        boolean inverseToMany = _inverseToManyButton.getSelection();


        if (_createFK) {
          fkName = _fkNameText.getText();
          fkColumnName = _fkColumnNameText.getText();
        }
        if (_createInverseFK) {
          inverseFKName = _inverseFKNameText.getText();
          inverseFKColumnName = _inverseFKColumnNameText.getText();
        }


        NewOneToManyRelationshipOperation operation = new NewOneToManyRelationshipOperation(_relationship, _sourceEntity, name, createRelationship, toMany, _createFK, fkName, fkColumnName, _destinationEntity, inverseName, createInverseRelationship, inverseToMany, _createInverseFK, inverseFKName, inverseFKColumnName);
        operation.addContext(EOModelUtils.getUndoContext(_sourceEntity));
        IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
        operationHistory.execute(operation, null, null);
      }
      super.okPressed();
    } catch (Throwable t) {
      ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), t);
    }

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

        if (!referenceFailures.isEmpty()) {
          new EOModelErrorDialog(getWindow().getShell(), referenceFailures).open();
        } else {
          CutOperation operation = new CutOperation(selectedObjects);
          operation.addContext(EOModelUtils.getUndoContext(selectedObjects));
          IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
          operationHistory.execute(operation, null, null);
        }
      }
    } catch (Throwable t) {
      ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), t);
    }

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

            InheritanceType inheritanceType = dialog.getInheritanceType();
            String restrictingQualifier = dialog.getRestrictingQualifier();
            EOModel destinationModel = dialog.getDestinationModel();
            SubclassOperation operation = new SubclassOperation(parentEntity, inheritanceType, destinationModel, entityName, restrictingQualifier);
            operation.addContext(EOModelUtils.getUndoContext(model));
            IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
            operationHistory.execute(operation, null, null);
          } catch (Throwable e) {
            ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), e);
          }
        } else {
          MessageDialog.openError(getWindow().getShell(), Messages.getString("Subclass.noEntityNameTitle"), Messages.getString("Subclass.noEntityNameMessage"));//$NON-NLS-1$

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

      }


      if (attributePath != null) {
        FlattenOperation operation = new FlattenOperation(attributePath);
        operation.addContext(EOModelUtils.getUndoContext(attributePath));
        IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
        operationHistory.execute(operation, null, null);
      } else {
        MessageDialog.openError(getWindow().getShell(), Messages.getString("EORelationship.noRelationshipOrAttributeSelectedTitle"), Messages.getString("EORelationship.noRelationshipOrAttributeSelectedMessage"));//$NON-NLS-1$
      }
    } catch (Throwable e) {
      ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), e);

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

        }
      }
      if (selectedObject != null) {
        NewOperation operation = new NewOperation(selectedObject);
        operation.addContext(EOModelUtils.getUndoContext(selectedObject));
        IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
        operationHistory.execute(operation, null, null);
      } else {
        MessageDialog.openError(getWindow().getShell(), getNoSelectionTitle(), getNoSelectionMessage());
      }
    } catch (Throwable e) {
      ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), e);

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