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
viewMenu.add(new Separator());
        for (int i = 0; i < fToggleCallModeActions.length; i++) {
            viewMenu.add(fToggleCallModeActions[i]);
        }
        viewMenu.add(new Separator());
        
        for (int i = 0; i < fToggleOrientationActions.length; i++) {
            viewMenu.add(fToggleOrientationActions[i]);
        }
    }
    /**
     *
     */
    public void dispose() {
        disposeMenu(fLocationContextMenu);
        if (fActionGroups != null)
            fActionGroups.dispose();
        super.dispose();
    }
    /**
     * Double click listener which jumps to the method in the source code.
     *
     * @return IDoubleClickListener
     */
    public void doubleClick(DoubleClickEvent event) {
        jumpToSelection(event.getSelection());
    }
    /**
     * Goes to the selected entry, without updating the order of history entries.
     */