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I am using iScroll on my mobile enable website (using iPhone here) to scroll inside a div.
In this this div, I have an iframe with a fixed height like this:
<body>
<div id="iscroller">
<iframe id="theIframe"></iframe>
Other stuff
</div>
</body>
Now, while scrolling within the div, everything works as expected but I cannot scroll when the scrolling gesture begins on the iframe.
The problem is described here pretty well: https://github.com/cubiq/iscroll/issues/41
So, I used the css workaround from that post by applying pointer-events:none to the iframe.
Now scrolling works perfectly but I cannot click any links which are defined within the iframe because all click/touch events on the iframe seems to be blocked due to pointer-events: none.
So, I thought:
"Ok, while the user scrolls, I need
pointer-events:none. If he is not scrolling (and instead clicking), I must setpointer-events:autoin order to let the click/touch events pass."
So I did this:
CSS
#theIframe{pointer-events:none}
JavaScript
$("#theIframe").bind("touchstart", function(){
// Enable click before click is triggered
$(this).css("pointer-events", "auto");
});
$("#theIframe").bind("touchmove", function(){
// Disable click/touch events while scrolling
$(this).css("pointer-events", "none");
});
Even adding this doesn't work:
$("#theIframe").bind("touchend", function(){
// Re-enable click/touch events after releasing
$(this).css("pointer-events", "auto");
});
No matter what I do: Either scrolling doesn't work or clicking the link inside the iframe doesn't work.
Doesn't work. Any ideas?
306
I found the perfect solution. Works great on iOS and Android.
The basic idea is to put a div layer on top of that iframe. This way scrolling works smoothly.
If the user wants to tap/click on an element on that iframe I simply catch that click on the layer, save the x and y coordinates and trigger a click event on the iframe's content at these coordinates:
HTML:
<div id="wrapper">
<div id="layer"></div>
<iframe id="theIframe"></iframe>
</div>
Other stuff
CSS:
#layer{
position:absolute;
opacity:0;
width:100%;
height:100%;
top:0;
left:0;
right:0;
bottom:0;
z-index:2
}
JavaScript:
$('#layer').click(function(event){
var iframe = $('#theIframe').get(0);
var iframeDoc = (iframe.contentDocument) ? iframe.contentDocument : iframe.contentWindow.document;
// Find click position (coordinates)
var x = event.offsetX;
var y = event.offsetY;
// Trigger click inside iframe
var link = iframeDoc.elementFromPoint(x, y);
var newEvent = iframeDoc.createEvent('HTMLEvents');
newEvent.initEvent('click', true, true);
link.dispatchEvent(newEvent);
});
I found a solution for this, it happens to be close to what other guys already mentioned on github but this may be useful for whoever wants to find a fast working resolution for this problem.
I'm assuming a few things, like there's only one iscroll container, here represented as ID. This is not properly tested and needs refactor. It's working in my project, but I changed it here slightly for the example but I guess you'll easily understand what you need to do:
var $iscroll = $('#iscroll');
document.addEventListener('touchstart', function(e) {
if ($iscroll.find('iframe').length > 0){
$.each($iscroll.find('iframe'), function(k,v){
var $parent = $(v).parent().first();
if ($parent.find('.preventTouch').length == 0){
$('<div class="preventTouch" style="position:absolute; z-index:2; width:100%; height:100%;"></div>')
.prependTo($parent);
};
$parent
.css('position', 'relative').css('z-index', 1);
});
$iscroll.find('.preventTouch').on('click', function(e){
e.preventDefault();
e.stopPropagation();
return false;
});
};
};
document.addEventListener('touchend', function(e) {
if ($iscroll.find('iframe').length > 0){
setTimeout(function(){
var $iscroll = $('#iscroll');
$iscroll.find('.preventTouch').remove();
$iscroll.find('iframe').css('z-index', '');
$iscroll.find('.preventTouch').off('click');
}, 400);
};
};
Thanks for looking!
22
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