AbstractRefactoringAction_NEW.java

/*
 * Copyright (c) 2014, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.dart.tools.ui.actions;

import com.google.dart.tools.core.DartCore;
import com.google.dart.tools.ui.internal.actions.SelectionConverter;
import com.google.dart.tools.ui.internal.text.editor.DartEditor;
import com.google.dart.tools.ui.internal.util.ExceptionHandler;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.progress.IProgressService;

/**
 * Abstract refactoring action.
 */
public abstract class AbstractRefactoringAction_NEW extends AbstractDartSelectionAction_NEW {
  /**
   * Waits until the server finishes analysis.
   * 
   * @return {@code true} if waiting was successful, {@code false} if cancelled.
   */
  public static boolean waitReadyForRefactoring() {
    Control focusControl = Display.getCurrent().getFocusControl();
    try {
      IProgressService progressService = PlatformUI.getWorkbench().getProgressService();
      progressService.busyCursorWhile(new IRunnableWithProgress() {
        @Override
        public void run(IProgressMonitor pm) throws InterruptedException {
          pm.beginTask("Waiting for analysis...", IProgressMonitor.UNKNOWN);
          while (true) {
            if (pm.isCanceled()) {
              throw new OperationCanceledException();
            }
            if (!DartCore.getAnalysisServerData().isAnalyzing()) {
              break;
            }
          }
        }
      });
      return true;
    } catch (Throwable ie) {
      return false;
    } finally {
      if (focusControl != null) {
        focusControl.setFocus();
      }
    }
  }

  public AbstractRefactoringAction_NEW(DartEditor editor) {
    super(editor);
    setEnabled(SelectionConverter.canOperateOn(editor));
  }

  protected boolean canOperateOn() {
    if (editor == null) {
      return false;
    }
    if (!editor.isEditable()) {
      return false;
    }
    return true;
  }

  protected void showError(String title, Throwable e) {
    ExceptionHandler.handle(
        e,
        title,
        "Unexpected exception occurred. See the error log for more details.");
  }
}