Extending a directive

[scarlatine]

Hi,
I am a beginner with AngularJS. I would like to add an icon on the left of the title of a wij-dialog from Wijmo. It is possible with jQuery:

$(".ui-dialog-title").html("<img style=\"margin-left: -.75em; margin-right: 0.5em\" width=\"16\" src=\" sendEmail.ico \" />" + $(".ui-dialog-title").html());

I think it should be possible to add a directive (dialog-icon) in the wij-dialog directive, something like that:

<wij-dialog title="Please confirm" dialog-icon="sendEmail.ico" />

The trouble is that I don't know how I can get the generated HTML by wij-dialog to use it in my directive to add the icon. I wrote a plunk based on a test I wrote (a directive that changes the title of another directive).
Can someone tell me how to do this with a directive or a better way to extend an existing directive?
Thanks...

[Luke Kende]

Unfortunately, your new directive doesn't know about the existing wijmo directive and vice versa.  You might ask the guys at wijmo for a solution.

[scarlatine]

Hi,
Thanks for your answer.
It seems strange that if I have a directive there is no way to modify the generated HTML added to the DOM using another directive or anything else. I think there are use cases where you want to add or remove some HTML tags generated by a directive that you cannot or don't want to modify.
Bye...

P.S.: The jQuery solution was the answer from the guys at Wijmo. But I would like to find an elegant way to use it.
 

[Luke Kende]

Yes you can use another directive to do it, but timing of the wijmo directive's rendering is the challenge.  You'd have to create a $watch function do you know when their directive has created the element and then modify it with jquery in your directive.  Does that make sense?  

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[scarlatine]

Hi,
Thanks again for your answer.
I have read about the $watch function, but it seems to work with a controller and a scope. I have certainly missed something. Are you meaning that I can monitor the change in the tag replaced by the wij-dialog? 
I have found this about decorating a directive, it sounds perfect for my needs, but it doesn't work. I don't know why the function in wijmo.config is never called (plunk).
Another solution is to bind a function to the open event of the wij-dialog and use it to change the generated HTML. But the function is never called (another plunk).
I am stuck.
Bye...