Add open and close callbacks

[Steve Senior]

Great widget, thanks very much for writing.

I think it would be useful for you to add an open and close callback in the init i.e.:

widget.js

    if(args.openCallback) {
        //add a callback function when this opens
        $.popover.addEventListener('open', function(e){
            e.bubbles = false;
            e.cancelBubble = true;
            args.openCallback();
        });
    }

    if(args.closeCallback) {
        //add a callback function when this closes
        $.popover.addEventListener('close', function(e){
            e.bubbles = false;
            e.cancelBubble = true;
            args.closeCallback();
        });
    }

So you get two more args when you init - e.g:

// initialize the popover
$.popover.init({
    title: 'Title',
    showLeftNavButton: true,
    leftNavButtonTitle: 'Done',
    leftNavCallback: function() {
        // function run after left button is clicked
        alert(JSON.stringify(rowClicked));
    },
    showRightNavButton: true,
    rightNavButtonTitle: 'Next',
    rightNavCallback: function() {
        alert(JSON.stringify(rowClicked));
    },
    // set to true to disable tapping on backshade to close
    disableBackshadeClose: false,
    // view to show within the popover
    //view: args.view
    openCallback: function() {
        alert('open callback');
    },
    closeCallback: function() {
        alert('close callback');
    }
});

[Tim Poulsen]

Well, it took me long enough. But I've finally implemented this. Sorry for taking so long. Thanks for the suggestion.