Bug 168757 [KeyBindings] Add keybinding for 'collapse all' button in Navigator & Package Explorer
Just a nice to have - would be very handy to assign something like CTRL-minus to the 'collapse all' button in Navigator and Package Explorer views (really, anything w/ a tree view and than button).
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
* 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) {
        viewer.addFilter(patternFilter);
        viewer.addFilter(workingSetFilter);
    }
    /**