rooty/Bootstrap
0
0
Fork 0
mirror of https://github.com/twbs/bootstrap.git synced 2025-01-28 20:52:21 +01:00
Code Issues Actions Packages Releases Activity

Merge pull request #14207 from twbs/charlesbjohnson-affix-bottom-when-dynamic-height

Browse Source 
Charlesbjohnson affix bottom when dynamic height
This commit is contained in:
Jacob 2014-07-21 22:48:38 -07:00
commit 36483af92c
2 changed files with 102 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
js/affix.js
View File

@ -37,6 +37,28 @@
target: window
}
Affix.prototype.getState = function (scrollHeight, height, offsetTop, offsetBottom) {
var scrollTop = this.$target.scrollTop()
var position = this.$element.offset()
var targetHeight = this.$target.height()
if (offsetTop != null && this.affixed == 'top') return scrollTop < offsetTop ? 'top' : false
if (this.affixed == 'bottom') {
if (offsetTop != null) return (scrollTop + this.unpin <= position.top) ? false : 'bottom'
return (scrollTop + targetHeight <= scrollHeight - offsetBottom) ? false : 'bottom'
}
var initializing = this.affixed == null
var colliderTop = initializing ? scrollTop : position.top
var colliderHeight = initializing ? targetHeight : height
if (offsetTop != null && colliderTop <= offsetTop) return 'top'
if (offsetBottom != null && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom'
return false
}
Affix.prototype.getPinnedOffset = function () {
if (this.pinnedOffset) return this.pinnedOffset
this.$element.removeClass(Affix.RESET).addClass('affix')
@ -52,42 +74,40 @@
Affix.prototype.checkPosition = function () {
if (!this.$element.is(':visible')) return
var scrollHeight = $(document).height()
var scrollTop = this.$target.scrollTop()
var position = this.$element.offset()
var height = this.$element.height()
var offset = this.options.offset
var offsetTop = offset.top
var offsetBottom = offset.bottom
var scrollHeight = $('body').height()
if (typeof offset != 'object') offsetBottom = offsetTop = offset
if (typeof offsetTop == 'function') offsetTop = offset.top(this.$element)
if (typeof offsetBottom == 'function') offsetBottom = offset.bottom(this.$element)
var affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ? false :
offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ? 'bottom' :
offsetTop != null && (scrollTop <= offsetTop) ? 'top' : false
var affix = this.getState(scrollHeight, height, offsetTop, offsetBottom)
if (this.affixed === affix) return
if (this.unpin != null) this.$element.css('top', '')
if (this.affixed != affix) {
if (this.unpin != null) this.$element.css('top', '')
var affixType = 'affix' + (affix ? '-' + affix : '')
var e = $.Event(affixType + '.bs.affix')
var affixType = 'affix' + (affix ? '-' + affix : '')
var e = $.Event(affixType + '.bs.affix')
this.$element.trigger(e)
this.$element.trigger(e)
if (e.isDefaultPrevented()) return
if (e.isDefaultPrevented()) return
this.affixed = affix
this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null
this.affixed = affix
this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null
this.$element
.removeClass(Affix.RESET)
.addClass(affixType)
.trigger(affixType.replace('affix', 'affixed') + '.bs.affix')
this.$element
.removeClass(Affix.RESET)
.addClass(affixType)
.trigger(affixType.replace('affix', 'affixed') + '.bs.affix')
}
if (affix == 'bottom') {
this.$element.offset({
top: scrollHeight - this.$element.height() - offsetBottom
top: scrollHeight - height - offsetBottom
})
}
}

68
js/tests/visual/affix.html
View File

@ -6,12 +6,36 @@
<style>
/* Test Styles */
.affix {
.affixed-element-top.affix {
top: 10px;
}
.affix-bottom {
.affixed-element-top.affix-bottom {
position: absolute;
}
.affixed-element-bottom {
margin-bottom: 0;
}
.affixed-element-bottom.affix {
bottom: 10px;
}
.affixed-element-bottom.affix-bottom {
position: relative;
}
.grow-btn, .shrink-btn {
color: #FFF;
}
.grow-btn {
background-color: #2ECC40;
}
.grow-btn:hover {
background-color: #3D9970;
}
.shrink-btn {
background-color: #FF4136;
}
.shrink-btn:hover {
background-color: #85144B;
}
</style>
</head>
<body>
@ -23,7 +47,7 @@
</div>
<div class="col-md-3">
<ul class="list-group js-affixed-element">
<ul class="list-group affixed-element-top js-affixed-element-top">
<li class="list-group-item">Cras justo odio</li>
<li class="list-group-item">Dapibus ac facilisis in</li>
<li class="list-group-item">Morbi leo risus</li>
@ -43,7 +67,7 @@
</ul>
</div>
<div class="col-md-9">
<div class="col-md-6 js-content">
<p>Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Donec ullamcorper nulla non metus auctor fringilla. Nulla vitae elit libero, a pharetra augue. Maecenas sed diam eget risus varius blandit sit amet non magna.</p>
@ -199,6 +223,27 @@
</div>
<div class="col-md-3">
<ul class="list-group affixed-element-bottom js-affixed-element-bottom">
<li class="list-group-item">Sit necessitatibus aspernatur.</li>
<li class="list-group-item">Adipisicing alias dolor!</li>
<li class="list-group-item">Ipsum molestiae impedit.</li>
<li class="list-group-item">Amet quis iste?</li>
<li class="list-group-item">Ipsum quaerat porro.</li>
<li class="list-group-item">Elit lorem libero.</li>
<li class="list-group-item">Ipsum dolore facilis.</li>
<li class="list-group-item">Elit ad atque.</li>
<li class="list-group-item">Dolor amet sequi!</li>
<li class="list-group-item">Consectetur voluptatum facilis!</li>
<li class="list-group-item">Sit neque eligendi?</li>
<li class="list-group-item">Amet fuga consectetur!</li>
<li class="list-group-item">Amet molestias repellat!</li>
<li class="list-group-item">Consectetur minima repellendus.</li>
<li class="list-group-item grow-btn js-grow-btn">Grow content</li>
<li class="list-group-item shrink-btn js-shrink-btn">Shrink content</li>
</ul>
</div>
<div class="col-md-12 js-footer">
<hr>
@ -222,7 +267,7 @@
<!-- JavaScript Test -->
<script>
$(function () {
$('.js-affixed-element').affix({
$('.js-affixed-element-top').affix({
offset: {
top: $('.js-page-header').outerHeight(true) - 10
, bottom: $('.js-footer').outerHeight(true) + 10
@ -232,6 +277,19 @@ $(function () {
.on('affix.bs.affix', function (e) {
$(e.target).width(e.target.offsetWidth)
})
$('.js-affixed-element-bottom').affix({
offset: {
bottom: $('.js-footer').outerHeight(true) + 10
}
})
$('.js-grow-btn').on('click', function() {
$('.js-content').append('<p>Ipsum corrupti ipsam est temporibus.</p>')
})
$('.js-shrink-btn').on('click', function() {
$('.js-content p').last().remove()
})
})
</script>
</body>