com.google.gdt.eclipse.designer.gwtext.actions.ConfigureGwtExtOperation.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.gwtext.actions.ConfigureGwtExtOperation.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.gwtext.actions;

import com.google.gdt.eclipse.designer.gwtext.Activator;
import com.google.gdt.eclipse.designer.model.module.ModuleElement;
import com.google.gdt.eclipse.designer.util.DefaultModuleProvider;
import com.google.gdt.eclipse.designer.util.DefaultModuleProvider.ModuleModification;
import com.google.gdt.eclipse.designer.util.ModuleDescription;
import com.google.gdt.eclipse.designer.util.Utils;

import org.eclipse.wb.internal.core.utils.IOUtils2;
import org.eclipse.wb.internal.core.utils.execution.ExecutionUtils;
import org.eclipse.wb.internal.core.utils.execution.RunnableEx;
import org.eclipse.wb.internal.core.utils.jdt.core.ProjectUtils;

import org.eclipse.core.resources.IFolder;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.ui.actions.WorkspaceModifyOperation;

import org.apache.commons.io.IOUtils;
import org.osgi.framework.Bundle;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

/**
 * Operation for configuring GWT module for using GWT-Ext.
 * 
 * @author scheglov_ke
 * @coverage GWTExt.actions
 */
public final class ConfigureGwtExtOperation extends WorkspaceModifyOperation {
    private final ModuleDescription m_module;
    private final IJavaProject m_javaProject;

    ////////////////////////////////////////////////////////////////////////////
    //
    // Constructor
    //
    ////////////////////////////////////////////////////////////////////////////
    public ConfigureGwtExtOperation(ModuleDescription module) {
        m_module = module;
        m_javaProject = JavaCore.create(m_module.getProject());
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Operation
    //
    ////////////////////////////////////////////////////////////////////////////
    @Override
    protected void execute(IProgressMonitor monitor)
            throws CoreException, InvocationTargetException, InterruptedException {
        ExecutionUtils.runRethrow(new RunnableEx() {
            public void run() throws Exception {
                execute0();
            }
        });
    }

    private void execute0() throws Exception {
        Bundle bundle = Platform.getBundle("com.google.gdt.eclipse.designer.GWTExt");
        // ensure jar
        if (!ProjectUtils.hasType(m_javaProject, "com.gwtext.client.widgets.Component")) {
            ProjectUtils.addJar(m_javaProject, bundle, "resources/gwtext.jar", null);
        }
        // ensure ExtJS public resources
        if (!Utils.isExistingResource(m_module, "ext-all.js")) {
            InputStream zipFile = Activator.getFile("resources/publicResources.zip");
            IFolder publicFolder = m_module.getModulePublicFolder();
            IFolder extFolder = publicFolder.getFolder(new Path("js/ext"));
            extractZip(zipFile, extFolder);
        }
        // add elements into module
        DefaultModuleProvider.modify(m_module, new ModuleModification() {
            public void modify(ModuleElement moduleElement) throws Exception {
                moduleElement.addStylesheetElement("js/ext/resources/css/ext-all.css");
                moduleElement.addScriptElement("js/ext/adapter/ext/ext-base.js");
                moduleElement.addScriptElement("js/ext/ext-all.js");
                moduleElement.addInheritsElement("com.gwtext.GwtExt");
            }
        });
    }

    private static void extractZip(InputStream zipFile, IFolder targetFolder) throws Exception {
        ZipInputStream zipInputStream = new ZipInputStream(zipFile);
        while (true) {
            ZipEntry zipEntry = zipInputStream.getNextEntry();
            if (zipEntry == null) {
                break;
            }
            if (!zipEntry.isDirectory()) {
                String entryName = zipEntry.getName();
                byte[] byteArray = IOUtils.toByteArray(zipInputStream);
                IOUtils2.setFileContents(targetFolder.getFile(new Path(entryName)),
                        new ByteArrayInputStream(byteArray));
            }
            zipInputStream.closeEntry();
        }
        zipInputStream.close();
    }
}