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

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Here is the source code for com.google.gdt.eclipse.designer.gxt.actions.ConfigureExtGwtOperation.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.model.module.ModuleElement;
import com.google.gdt.eclipse.designer.model.web.WebUtils;
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.EnvironmentUtils;
import org.eclipse.wb.internal.core.utils.IOUtils2;
import org.eclipse.wb.internal.core.utils.StringUtilities;
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.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.ui.actions.WorkspaceModifyOperation;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.SystemUtils;

import java.io.File;
import java.lang.reflect.InvocationTargetException;

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

    ////////////////////////////////////////////////////////////////////////////
    //
    // Constructor
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @param libraryLocation
     *          path to the folder with "gxt.jar" file.
     */
    public ConfigureExtGwtOperation(ModuleDescription module, String libraryLocation) {
        m_module = module;
        m_libraryLocation = libraryLocation;
        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 {
        // ensure jar
        if (!ProjectUtils.hasType(m_javaProject, "com.extjs.gxt.ui.client.widget.Component")) {
            String jarPath = getJarPath(m_libraryLocation);
            if (EnvironmentUtils.isTestingTime()) {
                ProjectUtils.addExternalJar(m_javaProject, jarPath, null);
            } else {
                ProjectUtils.addJar(m_javaProject, jarPath, null);
            }
        }
        // copy resources
        {
            File resourcesSourceDir = new File(new File(m_libraryLocation), "resources");
            IFolder webFolder = WebUtils.getWebFolder(m_javaProject);
            File webDir = webFolder.getLocation().toFile();
            File resourceTargetDir = new File(webDir, "ExtGWT");
            FileUtils.copyDirectory(resourcesSourceDir, resourceTargetDir);
            webFolder.refreshLocal(IResource.DEPTH_INFINITE, null);
        }
        // add elements into module
        DefaultModuleProvider.modify(m_module, new ModuleModification() {
            public void modify(ModuleElement moduleElement) throws Exception {
                moduleElement.addInheritsElement("com.extjs.gxt.ui.GXT");
            }
        });
        // add "stylesheet" into HTML
        {
            IFile htmlFile = Utils.getHTMLFile(m_module);
            if (htmlFile != null) {
                String content = IOUtils2.readString(htmlFile);
                int linkIndex = content.indexOf("<link type=");
                if (linkIndex != -1) {
                    String prefix = StringUtilities.getLinePrefix(content, linkIndex);
                    String GXTStylesheet = "<link type=\"text/css\" rel=\"stylesheet\" href=\"ExtGWT/css/gxt-all.css\">";
                    content = content.substring(0, linkIndex) + GXTStylesheet + SystemUtils.LINE_SEPARATOR + prefix
                            + content.substring(linkIndex);
                    IOUtils2.setFileContents(htmlFile, content);
                }
            }
        }
    }

    static String getJarPath(String libraryLocation) {
        File libraryFolder = new File(libraryLocation);
        for (String jarName : libraryFolder.list()) {
            String jarNameLower = jarName.toLowerCase();
            if (jarNameLower.startsWith("gxt") && jarNameLower.endsWith(".jar")) {
                if (jarNameLower.endsWith("-gwt22.jar")) {
                    return libraryLocation + "/" + jarName;
                }
            }
        }
        return libraryLocation + "/gxt.jar";
    }
}