NewsBlur/media/ios/static/fastTouch.js

function NoClickDelay(el) {
    this.element = typeof el == 'object' ? el : document.getElementById(el);
    if( window.Touch ) {
        this.element.removeEventListener('touchstart', this.element.notouch, false);
        this.element.notouch = this;
        this.element.addEventListener('touchstart', this.element.notouch, false);
    }
}
NoClickDelay.prototype = {
handleEvent: function(e) {
    switch(e.type) {
        case 'touchstart': this.onTouchStart(e); break;
        case 'touchmove': this.onTouchMove(e); break;
        case 'touchend': this.onTouchEnd(e); break;
    }
},
onTouchStart: function(e) {
    e.preventDefault();
    this.moved = false;
    this.x = e.targetTouches[0].clientX;
    this.y = e.targetTouches[0].clientY;
    this.theTarget = document.elementFromPoint(e.targetTouches[0].clientX, e.targetTouches[0].clientY);
    this.theTarget = $(this.theTarget).closest('a').get(0);
    //    if(this.theTarget.nodeType == 3) this.theTarget = theTarget.parentNode;
    this.theTarget.className+= ' pressed';
    this.element.addEventListener('touchmove', this, false);
    this.element.addEventListener('touchend', this, false);
},
onTouchMove: function(e) {
    var x = e.targetTouches[0].clientX;
    var y = e.targetTouches[0].clientY;
    if( Math.sqrt(Math.pow(x-this.x,2)+Math.pow(y-this.y,2))>50){
        this.moved = true;
        this.theTarget.className = this.theTarget.className.replace(/ ?pressed/gi, '');
        this.theTarget.className = this.theTarget.className.replace(/ ?active/gi, '');
    } else {
        if(this.moved==true){
            this.moved=false;
            this.theTarget.className+= ' pressed';
        }
    }
},
onTouchEnd: function(e) {
    this.element.removeEventListener('touchmove', this, false);
    this.element.removeEventListener('touchend', this, false);
    if( !this.moved && this.theTarget ) {
        this.theTarget.className = this.theTarget.className.replace(/ ?pressed/gi, '');
        this.theTarget.className+= ' active';
        var theEvent = document.createEvent('MouseEvents');
        theEvent.initEvent('click', true, true);
        this.theTarget.dispatchEvent(theEvent);
    }
    this.theTarget = undefined;
}
};

function attachFastClick() {
    var avatars = document.getElementsByClassName("NB-show-profile");
    Array.prototype.slice.call(avatars, 0).forEach(function(avatar) {
                                                   new NoClickDelay(avatar);
                                                   });
    var tags = document.getElementsByClassName("NB-story-tag");
    Array.prototype.slice.call(tags, 0).forEach(function(tag) {
                                                new NoClickDelay(tag);
                                                });
    
    var author = document.getElementById("NB-story-author");
    if (author) {
        new NoClickDelay(author);
    }
}

Zepto(function($) {
      attachFastClick();
});