Hi , i did the trick by changing "this" to
document.querySelector('drag-resizen').focus(element); , but i'm not sure
if its the best practice . I would like to see some opinions about the
implementation , Thanks!
El martes, 10 de mayo de 2016, 20:55:12 (UTC-4), Gonzalo Tirapegui escribió:
>
> Hi! i'm trying to rewrite the source of this
> <https://github.com/manekinekko/drag-resize/blob/master/drag-resize.html>
> drag
> and drop component from the 0.5 to 1.0 version of Polymer . In the domReady
> method a listener function is attached to the parent document object to be
> triggered on the mousedown event , and in the lines 769 and 772 the "focus"
> and "blur" functions of the drag-resize component are called . Now , if i
> try to add the event listener by the listen function i get the error
> "Uncaught TypeError : Invalid value used as weak map key" , and if i try
> this code :
>
> this.ownerDocument.addEventListener('mousedown', function(event){
> var element = event.srcElement || event.target;
> var filteredElements = element.classList.contains('drag-resize')
> || element.classList.contains('drag-resize-handlers') ||
> element.getAttribute('drag-resizen') !== null;
> if(!element.classList.contains('drag-resize')){
> if(filteredElements){
> this.focus(element);
> }
> else {
> this.blur(true);
> }
> }
> });
>
> the "this" operator on the call to the focus and the blur function
> executes the parent document functions , not the drag-resize focus and blur
> methods , and as you can see the drag-resize element on the 0.5 version it
> execute it's own focus and blur method. So , how can this can be done on
> Polymer 1.0?
>
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