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Code Issues Releases Activity

Contact list scroll fix

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This commit is contained in:
VicDeo 2012-02-20 23:54:23 +03:00
parent 16702e97c0
commit 61e98cae3c
1 changed files with 34 additions and 18 deletions
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52
js/jquery.inview.js
View File

@ -5,18 +5,40 @@
*/
(function ($) {
var inviewObjects = {}, viewportSize, viewportOffset,
d = document, w = window, documentElement = d.documentElement, expando = $.expando;
d = document, w = window, documentElement = d.documentElement, expando = $.expando, isFiring = false, $elements = {};
$.event.special.inview = {
add: function(data) {
inviewObjects[data.guid + "-" + this[expando]] = { data: data, $element: $(this) };
var inviewObject = { data: data, $element: $(this) }
inviewObjects[data.guid + "-" + this[expando]] = inviewObject;
var selector = inviewObject.data.selector,
$element = inviewObject.$element;
var hash = parseInt(getHash( data.guid + this[expando]));
$elements[hash] = selector ? $element.find(selector) : $element;
},
remove: function(data) {
try { delete inviewObjects[data.guid + "-" + this[expando]]; } catch(e) {}
try {
var hash = parseInt(getHash(data.guid + this[expando]));
delete($elements[hash]);
} catch (e){}
}
};
function getHash(str){
str = str+'';
var hash = 0;
if (str.length == 0) return hash;
for (i = 0; i < str.length; i++) {
char = str.charCodeAt(i);
hash = ((hash<<5)-hash)+char;
hash = hash & hash; // Convert to 32bit integer
}
return Math.abs(hash);
}
function getViewportSize() {
var mode, domObject, size = { height: w.innerHeight, width: w.innerWidth };
@ -46,22 +68,15 @@
}
function checkInView() {
var $elements = $(), elementsLength, i = 0;
$.each(inviewObjects, function(i, inviewObject) {
var selector = inviewObject.data.selector,
$element = inviewObject.$element;
$elements = $elements.add(selector ? $element.find(selector) : $element);
});
elementsLength = $elements.length;
if (elementsLength) {
if (isFiring){
return;
}
isFiring = true;
viewportSize = viewportSize || getViewportSize();
viewportOffset = viewportOffset || getViewportOffset();
for (; i<elementsLength; i++) {
// Ignore elements that are not in the DOM tree
if (!$.contains(documentElement, $elements[i])) {
for (var i in $elements) {
if (isNaN(parseInt(i))) {
continue;
}
@ -72,13 +87,14 @@
visiblePartX,
visiblePartY,
visiblePartsMerged;
// Don't ask me why because I haven't figured out yet:
// viewportOffset and viewportSize are sometimes suddenly null in Firefox 5.
// Even though it sounds weird:
// It seems that the execution of this function is interferred by the onresize/onscroll event
// where viewportOffset and viewportSize are unset
if (!viewportOffset || !viewportSize) {
isFiring = false;
return;
}
@ -100,7 +116,7 @@
$element.data('inview', false).trigger('inview', [false]);
}
}
}
isFiring = false;
}
$(w).bind("scroll resize", function() {