Bug 121772 [Viewers] ClassCastException opening file from Navigator
I get a class cast exception when I open a file from the navigator. The problem is that there is a cast to StructuredSelection instead of IStructuredSelection in the ResourceNavigator class (and the object being cast is a TreeSelection). Here are the interesting lines of the trace. Caused by: java.lang.ClassCastException: org/eclipse/jface/viewers/TreeSelection incompatible with org/eclipse/jface/viewers/StructuredSelection at org.eclipse.ui.views.navigator.ResourceNavigator$8.run(ResourceNavigator.java:726)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
initListeners(viewer);
        return viewer;
    }
    /**
     * Sets the content provider for the viewer.
     * 
     * @param viewer the viewer
     * @since 2.0
     */
    protected void initContentProvider(TreeViewer viewer) {
        viewer.setContentProvider(new WorkbenchContentProvider());
    }
    /**
     * Sets the label provider for the viewer.
     * 
     * @param viewer the viewer
     * @since 2.0
     */
    protected void initLabelProvider(TreeViewer viewer) {
        viewer.setLabelProvider(new DecoratingLabelProvider(
                new WorkbenchLabelProvider(), getPlugin().getWorkbench()
                        .getDecoratorManager().getLabelDecorator()));
    }
    /**
     * Adds the filters to the viewer.
     * 
     * @param viewer the viewer
     * @since 2.0
     */
    protected void initFilters(TreeViewer viewer) {