Bug 36519 [call hierarchy] ability to copy the view's content to the clipboard
we should add the ability to copy the view's content to the clipboard (it may be useful for people to take a pic of the callgraph and show to other people, for example)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
setCallMode(mode);
    }
    private void initImplementorsMode() {
        int mode;
        
        mode= CallHierarchy.getDefault().isSearchUsingImplementorsEnabled() ? IMPLEMENTORS_ENABLED : IMPLEMENTORS_DISABLED;
        fCurrentImplementorsMode= -1;
        
        
        setImplementorsMode(mode);
    }
    private void initOrientation() {
        int orientation;
        try {
            orientation = fDialogSettings.getInt(DIALOGSTORE_VIEWORIENTATION);
            if ((orientation < 0) || (orientation > 2)) {
                orientation = VIEW_ORIENTATION_VERTICAL;
            }
        } catch (NumberFormatException e) {
            orientation = VIEW_ORIENTATION_VERTICAL;
        }
        
        fCurrentOrientation = -1;
        
        setOrientation(orientation);
    }
    private void fillViewMenu() {
        IActionBars actionBars = getViewSite().getActionBars();
        IMenuManager viewMenu = actionBars.getMenuManager();