Action Label Handler

This is an optional handler you don’t need to implement anything for it unless you want to. This callback allows your code to override the default tooltip text for the Undo and Redo buttons.

actionLabelHandler

    actionLabelHandler(action)

The actionLabelHandler callback, when provided, is called for each action that is performed in Common Canvas. The action object parameter, passed in to the callback, contains details of the action being performed. This callback should return either a string or null. If a string is returned it will be shown in the tooltip for the Undo button in the toolbar preceded by “Undo:” and the string will also appear in the tooltip for the Redo button (when appropriate) preceded by “Redo:”. If null is returned, Common Canvas will display the default text for the Undo and Redo buttons.