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/**
* @workInProgress
* @ngdoc service
* @name angular.service.$invalidWidgets
*
* @description
* Keeps references to all invalid widgets found during validation.
* Can be queried to find whether there are any invalid widgets currently displayed.
*
* @example
*/
angularServiceInject("$invalidWidgets", function(){
var invalidWidgets = [];
/** Remove an element from the array of invalid widgets */
invalidWidgets.markValid = function(element){
var index = indexOf(invalidWidgets, element);
if (index != -1)
invalidWidgets.splice(index, 1);
};
/** Add an element to the array of invalid widgets */
invalidWidgets.markInvalid = function(element){
var index = indexOf(invalidWidgets, element);
if (index === -1)
invalidWidgets.push(element);
};
/** Return count of all invalid widgets that are currently visible */
invalidWidgets.visible = function() {
var count = 0;
forEach(invalidWidgets, function(widget){
count = count + (isVisible(widget) ? 1 : 0);
});
return count;
};
/* At the end of each eval removes all invalid widgets that are not part of the current DOM. */
this.$onEval(PRIORITY_LAST, function() {
for(var i = 0; i < invalidWidgets.length;) {
var widget = invalidWidgets[i];
if (isOrphan(widget[0])) {
invalidWidgets.splice(i, 1);
if (widget.dealoc) widget.dealoc();
} else {
i++;
}
}
});
/**
* Traverses DOM element's (widget's) parents and considers the element to be an orphant if one of
* it's parents isn't the current window.document.
*/
function isOrphan(widget) {
if (widget == window.document) return false;
var parent = widget.parentNode;
return !parent || isOrphan(parent);
}
return invalidWidgets;
}, [], true);
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