Question

I have a plugin which creates a new view. In my view I display certain information about certain Java classes in the project. I want to allow the user to double click on a class in my view and when s/he does, I want to open that class for editing in the editor. Basically similarly to what the Hierarchy View does: it displays the tree of classes and when the user double-clicks on one of them, it goes into the editor. How do I do that if what I have is an object of type IType?

Answer 1

I will be showing a high-level implementation for your requirement. You have to do following steps.

• first you have to do entry in Plugin.xml for the class which extends
  viewPart and editorPart for a view and editor respectively.
• for the hierarchy view, you have to load the information with a tree structure in
  ViewPart.
• On a node’s double click Listener you have to open the editor.

To open a file in the editor, use the following code to open the editor.

 if (fileToOpen.exists() && fileToOpen.isFile()) {
     String path = //Path for that to file to open;
     IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
     URI fromString = org.eclipse.core.runtime.URIUtil.fromString("file://" + path);
     try {
         IEditorPart openEditor = IDE.openEditor(page, fromString, Editor.ID, true);
         IEditorInput editorInput = openEditor.getEditorInput();
         //editorInput.
     } catch ( PartInitException e ) {
         //Put your exception handler here if you wish to.
     }
 }