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angularjs-placeholder-polyfill.js
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angularjs-placeholder-polyfill.js
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angular.module('customPlaceholder', []).directive('placeholder', function(){
// cn-placeholder directive definition object
return {
restrict: 'A',
require: 'ngModel',
link: function(scope, elm, attrs, ctrl) {
if (!Modernizr.placeholder) {
// setup the label overlay for input
var computedStyle = window.getComputedStyle(elm[0], null),
leftPadding = computedStyle.getPropertyValue('padding-left'),
topPadding = computedStyle.getPropertyValue('padding-top'),
placeholderLabel = angular.element(elm.parent()
.css({'position':'relative'})
.prepend('<span>' + elm.attr('placeholder') + '</span>')
.find('span')[0])
.css({ 'color':'#999',
'position':'absolute',
'top': topPadding,
'left':leftPadding}),
placeholderBindClick = function(){
placeholderLabel.bind('click', function(){
elm[0].focus();
});
};
placeholderBindClick();
// removes the label overlay when a value is typed
var elemPlaceHandlePlaceholder = function(){
if (elm.val() !== '') {
placeholderLabel.remove();
} else {
elm.parent().prepend(placeholderLabel);
placeholderBindClick();
}
};
scope.$watch(attrs.ngModel, function(newValue, oldValue) {
elemPlaceHandlePlaceholder();
});
elm.bind('keyup keydown', function(){
elemPlaceHandlePlaceholder();
});
}
}
};
});