com.google.gdt.eclipse.designer.actions.ConvertIntoGwtProjectAction.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.actions.ConvertIntoGwtProjectAction.java

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/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available 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.gdt.eclipse.designer.actions;

import com.google.gdt.eclipse.designer.wizards.model.project.ProjectWizard;

import org.eclipse.wb.internal.core.DesignerPlugin;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;

/**
 * Action for converting selected project into GWT project.
 * 
 * @author scheglov_ke
 * @coverage gwt.actions
 */
public class ConvertIntoGwtProjectAction extends Action implements IWorkbenchWindowActionDelegate {
    private IJavaProject m_javaProject;

    ////////////////////////////////////////////////////////////////////////////
    //
    // IWorkbenchWindowActionDelegate
    //
    ////////////////////////////////////////////////////////////////////////////
    public void init(IWorkbenchWindow window) {
    }

    public void dispose() {
    }

    public void selectionChanged(IAction action, ISelection selection) {
        m_javaProject = getSelectedProject(selection);
        action.setEnabled(m_javaProject != null);
    }

    public void run(IAction action) {
        if (!MessageDialog.openConfirm(DesignerPlugin.getShell(), "Confirm",
                "Do you really want to convert project '" + m_javaProject.getElementName()
                        + "' into GWT project?")) {
            return;
        }
        //
        try {
            ProjectWizard.configureProjectAsGWTProject(m_javaProject);
        } catch (Throwable e) {
            DesignerPlugin.log(e);
        }
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Selection utils
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * Finds {@link IProject} corresponding given {@link ISelection}.
     */
    private static IJavaProject getSelectedProject(ISelection selection) {
        try {
            if (selection instanceof IStructuredSelection) {
                IStructuredSelection structuredSelection = (IStructuredSelection) selection;
                Object selectedObject = structuredSelection.getFirstElement();
                return getProjectFromResource(selectedObject);
            } else if (selection instanceof ITextSelection) {
                IEditorPart activeEditor = DesignerPlugin.getActiveEditor();
                IEditorInput editorInput = activeEditor.getEditorInput();
                if (editorInput instanceof IFileEditorInput) {
                    IFileEditorInput fileEditorInput = (IFileEditorInput) editorInput;
                    return getProjectFromResource(fileEditorInput.getFile());
                }
            }
        } catch (Throwable e) {
        }
        return null;
    }

    /**
     * If given object is {@link IResource} instance, finds corresponding {@link IProject}.
     */
    private static IJavaProject getProjectFromResource(Object o) throws CoreException {
        if (o instanceof IAdaptable) {
            o = ((IAdaptable) o).getAdapter(IResource.class);
        }
        if (o instanceof IResource) {
            IResource resource = (IResource) o;
            IProject project = resource.getProject();
            if (project.hasNature(JavaCore.NATURE_ID)) {
                return JavaCore.create(project);
            }
        }
        return null;
    }
}