插件集成常用语句

编程技术  /  houtizong 发布于 3年前   51

//在项目根目录下创建devlib文件夹，将htmlunit的支持包放入devlib文件夹下,并添加到classpath中final IFolder tld = project.getFolder("devlib");if(!tld.exists()){tld.create(IResource.FORCE, true, null);}

//添加到classpathprivate void addSourceFolder(IJavaProject project, IPath srcPath) throws JavaModelException {IClasspathEntry[] entries = project.getRawClasspath();IClasspathEntry[] newEntries = new IClasspathEntry[entries.length + 1];System.arraycopy(entries, 0, newEntries, 0, entries.length);newEntries[entries.length] = JavaCore.newSourceEntry(srcPath);project.setRawClasspath(newEntries, null);}

//添加listener,servelet,mappingprivate void createExoMetaData(WebApp webApp) {// Create the servlet instance and set up the parameters from data// modelListener listener = CommonFactory.eINSTANCE.createListener();listener.setListenerClassName("org.exoplatform.services.portletcontainer.impl.servlet.PortletApplicationListener");Servlet servlet = WebapplicationFactory.eINSTANCE.createServlet();servlet.setServletName("PortletWrapper");ServletType servletType = WebapplicationFactory.eINSTANCE.createServletType();servletType.setClassName("org.exoplatform.services.portletcontainer.impl.servlet.ServletWrapper");servlet.setWebType(servletType);// Add the servlet to the web application modelwebApp.getListeners().add(listener);webApp.getServlets().add(servlet);ServletMapping mapping = WebapplicationFactory.eINSTANCE.createServletMapping();mapping.setServlet(servlet);mapping.setName(servlet.getServletName());mapping.setUrlPattern("/PortletWrapper");webApp.getServletMappings().add(mapping);}

//参数if (webApp.getJ2EEVersionID() >= J2EEVersionConstants.J2EE_1_4_ID) {ParamValue param = CommonFactory.eINSTANCE.createParamValue();param.setName("company_id");param.setValue("liferay.com");webApp.getContextParams().add(param);} else {ContextParam cp = WebapplicationFactory.eINSTANCE.createContextParam();cp.setParamName("company_id");cp.setParamValue("liferay.com");cp.setWebApp(webApp);}

//addNature,SubProgressMonitor,addServletLibToWebInf/* * Copyright 2006 Cypal Solutions ([email protected]) * * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 *  * 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 in.cypal.studio.gwt.core.facet;import in.cypal.studio.gwt.core.Activator;import in.cypal.studio.gwt.core.common.Constants;import in.cypal.studio.gwt.core.common.Util;import org.eclipse.core.resources.IFile;import org.eclipse.core.resources.IProject;import org.eclipse.core.resources.IProjectDescription;import org.eclipse.core.resources.IResource;import org.eclipse.core.runtime.CoreException;import org.eclipse.core.runtime.IPath;import org.eclipse.core.runtime.IProgressMonitor;import org.eclipse.core.runtime.Path;import org.eclipse.core.runtime.SubProgressMonitor;import org.eclipse.jdt.core.IAccessRule;import org.eclipse.jdt.core.IClasspathAttribute;import org.eclipse.jdt.core.IClasspathEntry;import org.eclipse.jdt.core.IJavaProject;import org.eclipse.jdt.core.JavaCore;import org.eclipse.jdt.core.JavaModelException;import org.eclipse.wst.common.componentcore.ComponentCore;import org.eclipse.wst.common.project.facet.core.IDelegate;import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;/** * @author Prakash G.R. * */public class InstallDelegate implements IDelegate{public void execute(IProject project, IProjectFacetVersion facetVersion, Object config, IProgressMonitor monitor) throws CoreException {monitor = Util.getNonNullMonitor(monitor);try {monitor.beginTask("", 3); addNature(project, new SubProgressMonitor(monitor, 1)); addUserLibToClassPath(project, new SubProgressMonitor(monitor, 1));addServletLibToWebInf(project, new SubProgressMonitor(monitor, 1));}catch(CoreException e) {monitor.setCanceled(true);Activator.logException(e);}finally {monitor.done();}}private void addServletLibToWebInf(IProject project, IProgressMonitor monitor){monitor = Util.getNonNullMonitor(monitor);try {    IPath webContent = ComponentCore.createComponent(project).getRootFolder().getProjectRelativePath();IFile theLink = project.getFile(webContent.append("WEB-INF").append("lib").append("gwt-servlet.jar")); IPath actualLocation = new Path(Constants.GWT_HOME_PATH+"/gwt-servlet.jar");  theLink.createLink(actualLocation, IResource.REPLACE, null);  } catch (CoreException e) {// the jar is already in the classpath.  Activator.logException(e);}finally {monitor.done();}}private void addUserLibToClassPath(IProject project, IProgressMonitor monitor){monitor = Util.getNonNullMonitor(monitor);try {monitor.beginTask("", 1); IJavaProject javaProject = JavaCore.create(project);IClasspathEntry[] oldClasspath = javaProject.getRawClasspath();IClasspathEntry[] newClasspath = new IClasspathEntry[oldClasspath.length+1];System.arraycopy(oldClasspath, 0, newClasspath, 0, oldClasspath.length);IClasspathEntry gwtUserJarEntry = JavaCore.newVariableEntry(Util.getGwtUserLibPath(), null, null);IClasspathAttribute attr = JavaCore.newClasspathAttribute("org.eclipse.jst.component.dependency", "/WEB-INF/lib");gwtUserJarEntry = JavaCore.newVariableEntry(gwtUserJarEntry.getPath(), null, null, new IAccessRule[0], new IClasspathAttribute[] {attr}, false);newClasspath[oldClasspath.length] = gwtUserJarEntry;javaProject.setRawClasspath(newClasspath, monitor);} catch (JavaModelException e) {// the jar is already in the classpath.  Activator.logException(e);}finally {monitor.done();}}private void addNature(IProject project, IProgressMonitor monitor) throws CoreException {monitor = Util.getNonNullMonitor(monitor);try {monitor.beginTask("", 1); IProjectDescription description = project.getDescription();String[] prevNatures= description.getNatureIds();String[] newNatures= new String[prevNatures.length + 1];System.arraycopy(prevNatures, 0, newNatures, 1, prevNatures.length);newNatures[0]= Constants.NATURE_ID;description.setNatureIds(newNatures);project.setDescription(description, IResource.FORCE, null);}finally {monitor.done();}}}

、从TextEditor继承，调用setSourceViewerConfiguration，并传进去一个从SourceViewerConfiguration 继承的配置类，就可以实现各种代码editor。
2、swt尽量使用GridLayout布局（不是java.awt中的GridLayout，而是swt中的）和GridData域。文章：http://coolbear.yculblog.com/post.89429.html

3、得到文件的编辑器的方法：
  

 public static IEditorPart findEditor(IFile file){        IEditorReference[] editors = getActivePage().getEditorReferences();;        for (int i = 0; i < editors.length; i++) {            IEditorPart part = (IEditorPart)editors[i].getPart(false);            if (part != null ){                IEditorInput input = part.getEditorInput();                if(input instanceof FileEditorInput && ((FileEditorInput)input).getFile().equals(file))                    return part;            }                       }        return null;    }

4、得到工作区中所有工程的方法:
      

 IProject[] projects = ResourcesPlugin.getWorkspace().getRoot()                .getProjects();

这在开发自己的工程向导的时候很有用处。
5、工程特有文件判断方法
project.getFile("cownew.prj").exists();
project.getDescription().hasNature();
给工程增加Nature的方法:

 IProjectDescription desc = project.getDescription();String[] oldNatureIds = desc.getNatureIds();                String[] newNatureIds  = new String[oldNatureIds.length +1];                System.arraycopy(oldNatureIds, 0, newNatureIds, 0, oldNatureIds.length);                newNatureIds[oldNatureIds.length] = "CowNewNature";                desc.setNatureIds(newNatureIds);                project.setDescription(desc, monitor);

6、创建文件夹的方法：

IFolder folder = project.getFolder("myfold");if (folder!=null && !folder.exists())  folder.create(false, true, null);

7、弹出包选择对话框的方法：

ElementListSelectionDialog dialog = new ElementListSelectionDialog(                    getShell(), new LabelProvider());            dialog.setIgnoreCase(false);dialog.setElements(getAllPackages().toArray());            String path = currentPackage(); dialog.setInitialSelections(new Object[] { path });dialog.open()；fPKName.setText((String) dialog.getFirstResult());public List getAllPackages() {        List list = new ArrayList();        IResource res = getFirstSelection();        IProject project = res.getProject();        File file = project.getFolder("src").getLocation().toFile();        File[] fs = file.listFiles();        for (int i = 0; i < fs.length; i++) {            if (fs[i].isDirectory())                iterator("", fs[i], list);        }        Collections.sort(list);        return list;    }

8 objectClass="org.eclipse.core.resources.IFile"代表菜单应用到文件
9 透视图的的实现很简单，就是在构造函数里边打开一些视图，使一些action（这样菜单和按钮也就都可用）可以用，比如：

String editorArea = layout.getEditorArea();        IFolderLayout left = layout.createFolder("left", IPageLayout.LEFT,                0.30f, editorArea);        left.addView(PACKAGE_VIEW_ID); layout.setEditorAreaVisible(true); layout.addShowViewShortcut(IDESystem.BUSINESSVIEW_ID);