com.google.gdt.eclipse.designer.gxt.actions.ConfigureExtGwtAction.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.gxt.actions.ConfigureExtGwtAction.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.gxt.actions;

import com.google.gdt.eclipse.designer.actions.AbstractModuleAction;
import com.google.gdt.eclipse.designer.actions.wizard.model.IModuleConfigurator;
import com.google.gdt.eclipse.designer.gxt.Activator;
import com.google.gdt.eclipse.designer.preferences.IPreferenceConstants;
import com.google.gdt.eclipse.designer.util.ModuleDescription;

import org.eclipse.wb.internal.core.DesignerPlugin;
import org.eclipse.wb.internal.core.utils.execution.ExecutionUtils;
import org.eclipse.wb.internal.core.utils.execution.RunnableEx;
import org.eclipse.wb.internal.core.wizards.AbstractActionDelegate;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.widgets.DirectoryDialog;

import java.io.File;

/**
 * Action for configuring GWT module for using Ext-GWT.
 * 
 * @author scheglov_ke
 * @coverage ExtGWT.actions
 */
public final class ConfigureExtGwtAction extends AbstractActionDelegate implements IModuleConfigurator {
    ////////////////////////////////////////////////////////////////////////////
    //
    // IActionDelegate
    //
    ////////////////////////////////////////////////////////////////////////////
    public void run(IAction action) {
        ExecutionUtils.runLog(new RunnableEx() {
            public void run() throws Exception {
                ModuleDescription module = AbstractModuleAction.getSelectedModule(getSelection());
                configure(module);
            }
        });
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // IModuleConfigurator
    //
    ////////////////////////////////////////////////////////////////////////////
    public void configure(ModuleDescription module) throws Exception {
        String libraryLocation = getLibraryLocation();
        if (libraryLocation != null) {
            new ConfigureExtGwtOperation(module, libraryLocation).run(null);
        }
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Utils
    //
    ////////////////////////////////////////////////////////////////////////////
    private static String LOCATION_KEY = IPreferenceConstants.TOOLKIT_ID + ".GXT.LibraryLocation";

    /**
     * @return the folder with "gwt.jar" file, or <code>null</code> if user cancelled selection.
     */
    private static String getLibraryLocation() {
        IPreferenceStore preferenceStore = Activator.getDefault().getPreferenceStore();
        String libraryLocation = preferenceStore.getString(LOCATION_KEY);
        while (true) {
            DirectoryDialog directoryDialog = new DirectoryDialog(DesignerPlugin.getShell());
            directoryDialog.setText("Ext GWT Location");
            directoryDialog.setMessage("Choose folder with extracted Ext GWT, it should have gxt.jar file.\n"
                    + "You can download it from http://www.extjs.com/products/gxt/");
            directoryDialog.setFilterPath(libraryLocation);
            libraryLocation = directoryDialog.open();
            // cancel
            if (libraryLocation == null) {
                return null;
            }
            // check for "gxt.jar" file
            {
                String jarPath = ConfigureExtGwtOperation.getJarPath(libraryLocation);
                File file = new File(jarPath);
                if (!file.exists() || !file.isFile()) {
                    MessageDialog.openError(null, "Invalid folder", "No gxt.jar file in choosen folder.");
                    continue;
                }
            }
            // check for "resources" directory
            {
                File file = new File(libraryLocation + "/resources");
                if (!file.exists() || !file.isDirectory()) {
                    MessageDialog.openError(null, "Invalid folder", "No 'resources' directory in choosen folder.\n"
                            + "Just gxt.jar file is not enough, we need also images and CSS files.");
                    continue;
                }
            }
            // OK
            preferenceStore.setValue(LOCATION_KEY, libraryLocation);
            return libraryLocation;
        }
    }
}