Missing context menu for text fields

In most Windows and Mac apps, right-clicking any text field shows a popup menu to Undo, Cut, Copy, Paste, etc. This behavior is built into the standard text control in the Win32 and AppKit frameworks and is seen everywhere.

In Qt, the Quick.Controls TextField handles keyboard shortcuts such as Ctrl-C, Ctrl-V, but it does not respond to right-click. I know it is not difficult to add a popup menu, but this should happen by default. The right-click user interface is important for novice users who are not aware of keyboard shortcuts. 

To reproduce this problem, use the TextField in QML with selectByMouse:true