Java IOperationHistory.getUndoOperation方法代码示例

import org.eclipse.core.commands.operations.IOperationHistory; //导入方法依赖的package包/类
@Override
protected void doSetValue(final Object value) {
	Object oldValue = doGetValue();
	if (CommonUtils.equals(value, oldValue)) {
		return; // nothing to do
	}
	EStructuralFeature feature = (EStructuralFeature) pd.getFeature(target);
	String name = EMFUtils.getDisplayName(target, feature);
	IUndoableOperation operation = new ChangeObservableOperation("Edit " + name, value);
	EObject observed = (EObject) getObserved();
	operation = EMFUtils.addContributorOperations(operation, observed, feature, oldValue, value);
	IUndoContext context = gov.nasa.ensemble.emf.transaction.TransactionUtils.getUndoContext(observed);
	IOperationHistory history = OperationHistoryFactory.getOperationHistory();
	IUndoableOperation previous = history.getUndoOperation(context);
	if (previous instanceof TextModifyUndoableObservableValue.TextModifyObservableOperation) {
		// Reset the TextModifyObservableOperation to clear the dirty flag on its TextModifyUndoableObservableValue
		((TextModifyUndoableObservableValue.TextModifyObservableOperation) previous).reset();
		// Remove the TextModifyObservableOperation operation from the operation history as it should be replaced by the new operation
		history.replaceOperation(previous, new IUndoableOperation[0]);
	}
	CommonUtils.execute(operation, context);
}
 

import org.eclipse.core.commands.operations.IOperationHistory; //导入方法依赖的package包/类
public void startRecording(XtextEditor editor) {
	this.editor = editor;
	ISourceViewer viewer = editor.getInternalSourceViewer();
	if (viewer instanceof ITextViewerExtension6) {
		IUndoManager undoManager = ((ITextViewerExtension6) viewer).getUndoManager();
		if (undoManager instanceof IUndoManagerExtension) {
			IUndoManagerExtension undoManagerExtension = (IUndoManagerExtension) undoManager;
			IUndoContext undoContext = undoManagerExtension.getUndoContext();
			IOperationHistory operationHistory = OperationHistoryFactory.getOperationHistory();
			startingUndoOperation = operationHistory.getUndoOperation(undoContext);
		}
	}
}
 

import org.eclipse.core.commands.operations.IOperationHistory; //导入方法依赖的package包/类
/**
 * Modify the current dirty state
 */
public void resetDirty() {
	IOperationHistory history = OperationHistoryFactory.getOperationHistory();
	cleanStateOperation = history.getUndoOperation(getUndoContext());
	if (dirty || dirtyByDefault) {
		dirtyByDefault = false;
		dirty = false;
		fireDirtyStateChanged();
	}
}
 

import org.eclipse.core.commands.operations.IOperationHistory; //导入方法依赖的package包/类
public void start() {
	if (getActiveLinkedMode() != null) {
		// for safety; should already be handled in RenameJavaElementAction
		fgActiveLinkedMode.startFullDialog();
		return;
	}

	ISourceViewer viewer = fEditor.getViewer();
	IDocument document = viewer.getDocument();

	ITypeScriptFile tsFile = fEditor.getTypeScriptFile();
	tsFile.setDisableChanged(true);
	fOriginalSelection = viewer.getSelectedRange();
	int offset = fOriginalSelection.x;

	try {
		fLinkedPositionGroup = new LinkedPositionGroup();
		if (viewer instanceof ITextViewerExtension6) {
			IUndoManager undoManager = ((ITextViewerExtension6) viewer).getUndoManager();
			if (undoManager instanceof IUndoManagerExtension) {
				IUndoManagerExtension undoManagerExtension = (IUndoManagerExtension) undoManager;
				IUndoContext undoContext = undoManagerExtension.getUndoContext();
				IOperationHistory operationHistory = OperationHistoryFactory.getOperationHistory();
				fStartingUndoOperation = operationHistory.getUndoOperation(undoContext);
			}
		}

		// Find occurrences
		List<OccurrencesResponseItem> occurrences = tsFile.occurrences(offset).get(1000, TimeUnit.MILLISECONDS);

		// Create Eclipse linked position from the occurrences list.
		int start, length;
		for (int i = 0; i < occurrences.size(); i++) {
			OccurrencesResponseItem item = occurrences.get(i);
			start = tsFile.getPosition(item.getStart());
			length = tsFile.getPosition(item.getEnd()) - start;
			LinkedPosition linkedPosition = new LinkedPosition(document, start, length, i);
			if (i == 0) {
				fOriginalName = document.get(start, length);
				fNamePosition = linkedPosition;
			}
			fLinkedPositionGroup.addPosition(linkedPosition);
		}

		fLinkedModeModel = new LinkedModeModel();
		fLinkedModeModel.addGroup(fLinkedPositionGroup);
		fLinkedModeModel.forceInstall();
		fLinkedModeModel.addLinkingListener(new EditorHighlightingSynchronizer(fEditor));
		fLinkedModeModel.addLinkingListener(new EditorSynchronizer());

		LinkedModeUI ui = new EditorLinkedModeUI(fLinkedModeModel, viewer);
		ui.setExitPosition(viewer, offset, 0, Integer.MAX_VALUE);
		ui.setExitPolicy(new ExitPolicy(document));
		ui.enter();

		viewer.setSelectedRange(fOriginalSelection.x, fOriginalSelection.y); // by
																				// default,
																				// full
																				// word
																				// is
																				// selected;
																				// restore
																				// original
																				// selection

		if (viewer instanceof IEditingSupportRegistry) {
			IEditingSupportRegistry registry = (IEditingSupportRegistry) viewer;
			registry.register(fFocusEditingSupport);
		}

		openSecondaryPopup();
		// startAnimation();
		fgActiveLinkedMode = this;

	} catch (Exception e) {
		JSDTTypeScriptUIPlugin.log(e);
	}
}