com.google.dart.tools.ui.actions.AbstractRefactoringAction_NEW.java Source code

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Here is the source code for com.google.dart.tools.ui.actions.AbstractRefactoringAction_NEW.java

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/*
 * 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.");
    }
}