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author | Prashant S | 2019-07-26 11:21:31 +0530 |
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committer | GitHub | 2019-07-26 11:21:31 +0530 |
commit | bfb41f58674f7c24bd41e6e6891f0773c3706ddc (patch) | |
tree | a407e9cac3242db67394711596835982160b0eaa /bootstrap/fonts/js/scrollspy.js | |
parent | e5a79b1f0f70eb0bc413c5b85139617dbe84b07d (diff) | |
parent | 17bc989bd924aa4682807cf7920abb8558da0006 (diff) | |
download | fossee_istos-master.tar.gz fossee_istos-master.tar.bz2 fossee_istos-master.zip |
internship work for new theme for drupal-8.x
Diffstat (limited to 'bootstrap/fonts/js/scrollspy.js')
-rwxr-xr-x | bootstrap/fonts/js/scrollspy.js | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/bootstrap/fonts/js/scrollspy.js b/bootstrap/fonts/js/scrollspy.js new file mode 100755 index 0000000..a629ac6 --- /dev/null +++ b/bootstrap/fonts/js/scrollspy.js @@ -0,0 +1,172 @@ +/* ======================================================================== + * Bootstrap: scrollspy.js v3.4.1 + * https://getbootstrap.com/docs/3.4/javascript/#scrollspy + * ======================================================================== + * Copyright 2011-2019 Twitter, Inc. + * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) + * ======================================================================== */ + + ++function ($) { + 'use strict'; + + // SCROLLSPY CLASS DEFINITION + // ========================== + + function ScrollSpy(element, options) { + this.$body = $(document.body) + this.$scrollElement = $(element).is(document.body) ? $(window) : $(element) + this.options = $.extend({}, ScrollSpy.DEFAULTS, options) + this.selector = (this.options.target || '') + ' .nav li > a' + this.offsets = [] + this.targets = [] + this.activeTarget = null + this.scrollHeight = 0 + + this.$scrollElement.on('scroll.bs.scrollspy', $.proxy(this.process, this)) + this.refresh() + this.process() + } + + ScrollSpy.VERSION = '3.4.1' + + ScrollSpy.DEFAULTS = { + offset: 10 + } + + ScrollSpy.prototype.getScrollHeight = function () { + return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight) + } + + ScrollSpy.prototype.refresh = function () { + var that = this + var offsetMethod = 'offset' + var offsetBase = 0 + + this.offsets = [] + this.targets = [] + this.scrollHeight = this.getScrollHeight() + + if (!$.isWindow(this.$scrollElement[0])) { + offsetMethod = 'position' + offsetBase = this.$scrollElement.scrollTop() + } + + this.$body + .find(this.selector) + .map(function () { + var $el = $(this) + var href = $el.data('target') || $el.attr('href') + var $href = /^#./.test(href) && $(href) + + return ($href + && $href.length + && $href.is(':visible') + && [[$href[offsetMethod]().top + offsetBase, href]]) || null + }) + .sort(function (a, b) { return a[0] - b[0] }) + .each(function () { + that.offsets.push(this[0]) + that.targets.push(this[1]) + }) + } + + ScrollSpy.prototype.process = function () { + var scrollTop = this.$scrollElement.scrollTop() + this.options.offset + var scrollHeight = this.getScrollHeight() + var maxScroll = this.options.offset + scrollHeight - this.$scrollElement.height() + var offsets = this.offsets + var targets = this.targets + var activeTarget = this.activeTarget + var i + + if (this.scrollHeight != scrollHeight) { + this.refresh() + } + + if (scrollTop >= maxScroll) { + return activeTarget != (i = targets[targets.length - 1]) && this.activate(i) + } + + if (activeTarget && scrollTop < offsets[0]) { + this.activeTarget = null + return this.clear() + } + + for (i = offsets.length; i--;) { + activeTarget != targets[i] + && scrollTop >= offsets[i] + && (offsets[i + 1] === undefined || scrollTop < offsets[i + 1]) + && this.activate(targets[i]) + } + } + + ScrollSpy.prototype.activate = function (target) { + this.activeTarget = target + + this.clear() + + var selector = this.selector + + '[data-target="' + target + '"],' + + this.selector + '[href="' + target + '"]' + + var active = $(selector) + .parents('li') + .addClass('active') + + if (active.parent('.dropdown-menu').length) { + active = active + .closest('li.dropdown') + .addClass('active') + } + + active.trigger('activate.bs.scrollspy') + } + + ScrollSpy.prototype.clear = function () { + $(this.selector) + .parentsUntil(this.options.target, '.active') + .removeClass('active') + } + + + // SCROLLSPY PLUGIN DEFINITION + // =========================== + + function Plugin(option) { + return this.each(function () { + var $this = $(this) + var data = $this.data('bs.scrollspy') + var options = typeof option == 'object' && option + + if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options))) + if (typeof option == 'string') data[option]() + }) + } + + var old = $.fn.scrollspy + + $.fn.scrollspy = Plugin + $.fn.scrollspy.Constructor = ScrollSpy + + + // SCROLLSPY NO CONFLICT + // ===================== + + $.fn.scrollspy.noConflict = function () { + $.fn.scrollspy = old + return this + } + + + // SCROLLSPY DATA-API + // ================== + + $(window).on('load.bs.scrollspy.data-api', function () { + $('[data-spy="scroll"]').each(function () { + var $spy = $(this) + Plugin.call($spy, $spy.data()) + }) + }) + +}(jQuery); |