User Story

As an app dev / support engineer, I want to modify the js code in za11y module without copy-paste or reverting the implementation, so that it's easier and less costly to override a function.

Acceptance Criteria

describe the final result from the owner's point of view to be counted as completed

Details

Current Way to override za11y functions

In order to call the widget's original method which is before overridden by za11y, I have to do one of the following things

• copy the widget's original method code into my patch js
• My custom logic needs to revert what za11y does first

//the existing code in za11y for Grid
zk.override(zul.grid.Grid.prototype, _xGrid, {
   bind_: function () {
      _xGrid.bind_.apply(this, arguments);
      //za11y logic
    }
});

//mypatch
zk.override(zul.grid.Grid.prototype, _xGrid, {
   bind_: function () {
      _xGrid.bind_.apply(this, arguments);  //call super method to run Grid's bind() in zul
      //revert what za11y does
      //implement my custom logic
      this.$supers(zul.grid.Grid, 'bind_', arguments); // call MeshWidget's bind_(), not Grid's bind_()
    }
});

za11y is a new module which needs to be overridden more frequently than other modules.