Bug 36485 call hierarchy: location of menu entry
'Open Call Hierarchy' menu entry should be located right below 'Open Type Hierarchy'
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
* @param orientation CALL_MODE_CALLERS or CALL_MODE_CALLEES
     */
    void setCallMode(int mode) {
        if (fCurrentCallMode != mode) {
            for (int i = 0; i < fToggleCallModeActions.length; i++) {
                fToggleCallModeActions[i].setChecked(mode == fToggleCallModeActions[i].getMode());
            }
            fCurrentCallMode = mode;
            fDialogSettings.put(DIALOGSTORE_CALL_MODE, mode);
            updateView();
        }
    }
    /**
     * called from ToggleImplementorsAction.
     * @param implementorsMode IMPLEMENTORS_USED or IMPLEMENTORS_NOT_USED
     */
    void setImplementorsMode(int implementorsMode) {
        if (fCurrentImplementorsMode != implementorsMode) {
            for (int i = 0; i < fToggleImplementorsActions.length; i++) {
                fToggleImplementorsActions[i].setChecked(implementorsMode == fToggleImplementorsActions[i].getImplementorsMode());
            }
            fCurrentImplementorsMode = implementorsMode;
            CallHierarchy.getDefault().setSearchUsingImplementorsEnabled(implementorsMode == IMPLEMENTORS_ENABLED);
            
            updateView();
        }
    }
    public IJavaSearchScope getSearchScope() {
        return fSearchScopeActions.getSearchScope();
    }