Bug 29633 [EditorMgmt] "Open" menu should have Open With-->Other
While registering file associations in the preferences page is mostly a reasonable proposition, it seems that having an "Open With --> Other" option would be helpful. This came up originally for me registering .sqlj files with the Java Editor. For unrelated reasons Eclipse is getting locked up by external tools, and I keep having to re-specify my preference since I had to kill Eclipse and the workspace was not saved. The implementation may also be helpful for contributers with editors on non-file resources, as they could reuse whatever dialog pops up when Open With --> Other is presented. -Andrew
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/OpenWithMenu.java
}
        
        IEditorDescriptor descriptor = registry
                .findEditor(IEditorRegistry.SYSTEM_EXTERNAL_EDITOR_ID);
        createMenuItem(menu, descriptor, preferredEditor);
        
        descriptor = registry
                .findEditor(IEditorRegistry.SYSTEM_INPLACE_EDITOR_ID);
        if (descriptor != null) {
            createMenuItem(menu, descriptor, preferredEditor);
        }
        createDefaultMenuItem(menu, file);
    }
	
    /**
     * Converts the IAdaptable file to IFile or null.
     */
    private IFile getFileResource() {
        if (this.file instanceof IFile) {
            return (IFile) this.file;
        }
        IResource resource = (IResource) this.file
                .getAdapter(IResource.class);
        if (resource instanceof IFile) {
            return (IFile) resource;
        }
       
        return null;
    }
    /* (non-Javadoc)