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
if (editorPart != null) {
                
                getSite().getPage().bringToTop(editorPart);
                EditorUtility.revealInEditor(editorPart, (IJavaElement) elem);
                
            }
        }
    }
    /**
     * Returns the current selection.
     */
    protected ISelection getSelection() {
        return getSite().getSelectionProvider().getSelection();
    }
    protected void fillContextMenu(IMenuManager menu) {
        JavaPlugin.createStandardGroups(menu);
        menu.appendToGroup(IContextMenuConstants.GROUP_SHOW, fRefreshAction);
    }
    protected void handleKeyEvent(KeyEvent event) {
        if (event.stateMask == 0) {
            if (event.keyCode == SWT.F5) {
                if ((fRefreshAction != null) && fRefreshAction.isEnabled()) {
                    fRefreshAction.run();
                    return;
                }
            }
        }
    }
    private IActionBars getActionBars() {
        return getViewSite().getActionBars();