eclipse plugin how to open file in IDE by code

Question

I am working on eclipse plugin in which i have to open a file from project explorer. Suppose i have a project ABC in project explorer. after right click on project i got a option to run my plugin tool. after processing i got some result like Check file xyz.java.

Now i want to open this file in IDE by code

i am using this

File absolute = new File("/Decider.java"); 
File file = new File("/Decider.java");
IFileStore fileOnLocalDisk = EFS.getLocalFileSystem().getStore(absolute.toURI() );
FileStoreEditorInput editorInput = new FileStoreEditorInput(fileOnLocalDisk);
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
IWorkbenchPage page = window.getActivePage();
 try { 
 page.openEditor(editorInput, "org.eclipse.ui.DefaultTextEditor"); 
 page.openEditor(editorInput, "MyEditor.editor"); 
 IFileStore fileStore = EFS.getLocalFileSystem().getStore(absolute.toURI() );
 IDE.openEditorOnFileStore( page, fileStore );
 } catch (PartInitException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 try {
 System.out.println(file.getCanonicalPath());
 } catch (IOException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
 }
 IPath path = new Path(" /DirectoryReader.java");
 IFile sampleFile = ResourcesPlugin.getWorkspace().getRoot().getFile(path);
 IEditorInput editorInput1 = new FileEditorInput(sampleFile);
 IWorkbenchWindow window1=PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 IWorkbenchPage page1 = window1.getActivePage();
 try {
 page1.openEditor(editorInput1, "org.eclipse.ui.DefaultTextEdtior");
 } catch (PartInitException e1) {
 e1.printStackTrace();
 } 

here it's create a new file named decider in c drive which means it's getting a wrong path.

but when i use path code in some independent java file as a normal JAVA project it's getting the correct path.

• greg-449: I'm not clear what you are asking. Do you just want to open the default editor on a project file, or a specific editor or what?
• user2379020: just want to open default eclipse editor as mention in code which is "org.eclipse.ui.DefaultTextEditor"
• user2379020: This problen is like when i run the plugin it's shows some error in a view like console of eclipse. Right now i want to open file which have bug.we have file name as you can see in absolute variable. i want to open this file but by above code it's creating a new file in new location.
• user2379020: and this is eclipse editor for development.

Answer 1

For a file in the workspace you should use IFile. If you have a selection from Project Explorer or another view that should already be an IFile or can be adapted to an IFile.

If you just have a workspace relative path use ResourcesPlugin.getWorkspace().getRoot().getFile(path) (path would include a project).

To open the default editor for the file contents use

IDE.openEditor(page, file, true);

to open a specific editor use

IDE.openEditor(page, file, "editor id");

IDE is org.eclipse.ui.ide.IDE.

• greg-449: @KrzyH In general, no, you can't open an editor at a specific line - some editors don't even have the concept of a line. IDE.openEditor does return the IEditorPart that was opened, editors which implement ITextEditor have a selectAndReveal method which shows an offset in the file.