cownew开源－eclipse插件开发学习知识点笔记

cownew开源－eclipse插件开发学习知识点笔记

1、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);