1 files changed, 364 insertions, 0 deletions

diff --git a/js/components/sticky.js b/js/components/sticky.js
new file mode 100755
index 0000000..2765f19
--- /dev/null
+++ b/js/components/sticky.js
@@ -0,0 +1,364 @@
+/*! UIkit 2.26.4 | http://www.getuikit.com | (c) 2014 YOOtheme | MIT License */
+(function(addon) {
+
+    var component;
+
+    if (window.UIkit) {
+        component = addon(UIkit);
+    }
+
+    if (typeof define == "function" && define.amd) {
+        define("uikit-sticky", ["uikit"], function(){
+            return component || addon(UIkit);
+        });
+    }
+
+})(function(UI){
+
+    "use strict";
+
+    var $win         = UI.$win,
+        $doc         = UI.$doc,
+        sticked      = [],
+        direction    = 1;
+
+    UI.component('sticky', {
+
+        defaults: {
+            top          : 0,
+            bottom       : 0,
+            animation    : '',
+            clsinit      : 'uk-sticky-init',
+            clsactive    : 'uk-active',
+            clsinactive  : '',
+            getWidthFrom : '',
+            showup      : false,
+            boundary     : false,
+            media        : false,
+            target       : false,
+            disabled     : false
+        },
+
+        boot: function() {
+
+            // should be more efficient than using $win.scroll(checkscrollposition):
+            UI.$doc.on('scrolling.uk.document', function(e, data) {
+                if (!data || !data.dir) return;
+                direction = data.dir.y;
+                checkscrollposition();
+            });
+
+            UI.$win.on('resize orientationchange', UI.Utils.debounce(function() {
+
+                if (!sticked.length) return;
+
+                for (var i = 0; i < sticked.length; i++) {
+                    sticked[i].reset(true);
+                    sticked[i].self.computeWrapper();
+                }
+
+                checkscrollposition();
+            }, 100));
+
+            // init code
+            UI.ready(function(context) {
+
+                setTimeout(function(){
+
+                    UI.$("[data-uk-sticky]", context).each(function(){
+
+                        var $ele = UI.$(this);
+
+                        if (!$ele.data("sticky")) {
+                            UI.sticky($ele, UI.Utils.options($ele.attr('data-uk-sticky')));
+                        }
+                    });
+
+                    checkscrollposition();
+                }, 0);
+            });
+        },
+
+        init: function() {
+
+            var boundary = this.options.boundary, boundtoparent;
+
+            this.wrapper = this.element.wrap('<div class="uk-sticky-placeholder"></div>').parent();
+            this.computeWrapper();
+            this.wrapper.css({
+                'margin-top'    : this.element.css('margin-top'),
+                'margin-bottom' : this.element.css('margin-bottom'),
+                'margin-left'   : this.element.css('margin-left'),
+                'margin-right'  : this.element.css('margin-right')
+            })
+            this.element.css('margin', 0);
+
+            if (boundary) {
+
+                if (boundary === true || boundary[0] === '!') {
+
+                    boundary      = boundary === true ? this.wrapper.parent() : this.wrapper.closest(boundary.substr(1));
+                    boundtoparent = true;
+
+                } else if (typeof boundary === "string") {
+                    boundary = UI.$(boundary);
+                }
+            }
+
+            this.sticky = {
+                self          : this,
+                options       : this.options,
+                element       : this.element,
+                currentTop    : null,
+                wrapper       : this.wrapper,
+                init          : false,
+                getWidthFrom  : UI.$(this.options.getWidthFrom || this.wrapper),
+                boundary      : boundary,
+                boundtoparent : boundtoparent,
+                top           : 0,
+                calcTop       : function() {
+
+                    var top = this.options.top;
+
+                    // dynamic top parameter
+                    if (this.options.top && typeof(this.options.top) == 'string') {
+
+                        // e.g. 50vh
+                        if (this.options.top.match(/^(-|)(\d+)vh$/)) {
+                            top = window.innerHeight * parseInt(this.options.top, 10)/100;
+                        // e.g. #elementId, or .class-1,class-2,.class-3 (first found is used)
+                        } else {
+
+                            var topElement = UI.$(this.options.top).first();
+
+                            if (topElement.length && topElement.is(':visible')) {
+                                top = -1 * ((topElement.offset().top + topElement.outerHeight()) - this.wrapper.offset().top);
+                            }
+                        }
+
+                    }
+
+                    this.top = top;
+                },
+
+                reset: function(force) {
+
+                    this.calcTop();
+
+                    var finalize = function() {
+                        this.element.css({"position":"", "top":"", "width":"", "left":"", "margin":"0"});
+                        this.element.removeClass([this.options.animation, 'uk-animation-reverse', this.options.clsactive].join(' '));
+                        this.element.addClass(this.options.clsinactive);
+                        this.element.trigger('inactive.uk.sticky');
+
+                        this.currentTop = null;
+                        this.animate    = false;
+
+                    }.bind(this);
+
+
+                    if (!force && this.options.animation && UI.support.animation && !UI.Utils.isInView(this.wrapper)) {
+
+                        this.animate = true;
+
+                        this.element.removeClass(this.options.animation).one(UI.support.animation.end, function(){
+                            finalize();
+                        }).width(); // force redraw
+
+                        this.element.addClass(this.options.animation+' '+'uk-animation-reverse');
+                    } else {
+                        finalize();
+                    }
+                },
+
+                check: function() {
+
+                    if (this.options.disabled) {
+                        return false;
+                    }
+
+                    if (this.options.media) {
+
+                        switch(typeof(this.options.media)) {
+                            case 'number':
+                                if (window.innerWidth < this.options.media) {
+                                    return false;
+                                }
+                                break;
+                            case 'string':
+                                if (window.matchMedia && !window.matchMedia(this.options.media).matches) {
+                                    return false;
+                                }
+                                break;
+                        }
+                    }
+
+                    var scrollTop      = $win.scrollTop(),
+                        documentHeight = $doc.height(),
+                        dwh            = documentHeight - window.innerHeight,
+                        extra          = (scrollTop > dwh) ? dwh - scrollTop : 0,
+                        elementTop     = this.wrapper.offset().top,
+                        etse           = elementTop - this.top - extra,
+                        active         = (scrollTop  >= etse);
+
+                    if (active && this.options.showup) {
+
+                        // set inactiv if scrolling down
+                        if (direction == 1) {
+                            active = false;
+                        }
+
+                        // set inactive when wrapper is still in view
+                        if (direction == -1 && !this.element.hasClass(this.options.clsactive) && UI.Utils.isInView(this.wrapper)) {
+                            active = false;
+                        }
+                    }
+
+                    return active;
+                }
+            };
+
+            this.sticky.calcTop();
+
+            sticked.push(this.sticky);
+        },
+
+        update: function() {
+            checkscrollposition(this.sticky);
+        },
+
+        enable: function() {
+            this.options.disabled = false;
+            this.update();
+        },
+
+        disable: function(force) {
+            this.options.disabled = true;
+            this.sticky.reset(force);
+        },
+
+        computeWrapper: function() {
+
+            this.wrapper.css({
+                'height'        : ['absolute','fixed'].indexOf(this.element.css('position')) == -1 ? this.element.outerHeight() : '',
+                'float'         : this.element.css('float') != 'none' ? this.element.css('float') : ''
+            });
+
+            if (this.element.css('position') == 'fixed') {
+                this.element.css({
+                    width: this.sticky.getWidthFrom.length ? this.sticky.getWidthFrom.width() : this.element.width()
+                });
+            }
+        }
+    });
+
+    function checkscrollposition(direction) {
+
+        var stickies = arguments.length ? arguments : sticked;
+
+        if (!stickies.length || $win.scrollTop() < 0) return;
+
+        var scrollTop       = $win.scrollTop(),
+            documentHeight  = $doc.height(),
+            windowHeight    = $win.height(),
+            dwh             = documentHeight - windowHeight,
+            extra           = (scrollTop > dwh) ? dwh - scrollTop : 0,
+            newTop, containerBottom, stickyHeight, sticky;
+
+        for (var i = 0; i < stickies.length; i++) {
+
+            sticky = stickies[i];
+
+            if (!sticky.element.is(":visible") || sticky.animate) {
+                continue;
+            }
+
+            if (!sticky.check()) {
+
+                if (sticky.currentTop !== null) {
+                    sticky.reset();
+                }
+
+            } else {
+
+                if (sticky.top < 0) {
+                    newTop = 0;
+                } else {
+                    stickyHeight = sticky.element.outerHeight();
+                    newTop = documentHeight - stickyHeight - sticky.top - sticky.options.bottom - scrollTop - extra;
+                    newTop = newTop < 0 ? newTop + sticky.top : sticky.top;
+                }
+
+                if (sticky.boundary && sticky.boundary.length) {
+
+                    var bTop = sticky.boundary.offset().top;
+
+                    if (sticky.boundtoparent) {
+                        containerBottom = documentHeight - (bTop + sticky.boundary.outerHeight()) + parseInt(sticky.boundary.css('padding-bottom'));
+                    } else {
+                        containerBottom = documentHeight - bTop;
+                    }
+
+                    newTop = (scrollTop + stickyHeight) > (documentHeight - containerBottom - (sticky.top < 0 ? 0 : sticky.top)) ? (documentHeight - containerBottom) - (scrollTop + stickyHeight) : newTop;
+                }
+
+
+                if (sticky.currentTop != newTop) {
+
+                    sticky.element.css({
+                        position : "fixed",
+                        top      : newTop,
+                        width    : sticky.getWidthFrom.length ? sticky.getWidthFrom.width() : sticky.element.width()
+                    });
+
+                    if (!sticky.init) {
+
+                        sticky.element.addClass(sticky.options.clsinit);
+
+                        if (location.hash && scrollTop > 0 && sticky.options.target) {
+
+                            var $target = UI.$(location.hash);
+
+                            if ($target.length) {
+
+                                setTimeout((function($target, sticky){
+
+                                    return function() {
+
+                                        sticky.element.width(); // force redraw
+
+                                        var offset       = $target.offset(),
+                                            maxoffset    = offset.top + $target.outerHeight(),
+                                            stickyOffset = sticky.element.offset(),
+                                            stickyHeight = sticky.element.outerHeight(),
+                                            stickyMaxOffset = stickyOffset.top + stickyHeight;
+
+                                        if (stickyOffset.top < maxoffset && offset.top < stickyMaxOffset) {
+                                            scrollTop = offset.top - stickyHeight - sticky.options.target;
+                                            window.scrollTo(0, scrollTop);
+                                        }
+                                    };
+
+                                })($target, sticky), 0);
+                            }
+                        }
+                    }
+
+                    sticky.element.addClass(sticky.options.clsactive).removeClass(sticky.options.clsinactive);
+                    sticky.element.trigger('active.uk.sticky');
+                    sticky.element.css('margin', '');
+
+                    if (sticky.options.animation && sticky.init && !UI.Utils.isInView(sticky.wrapper)) {
+                        sticky.element.addClass(sticky.options.animation);
+                    }
+
+                    sticky.currentTop = newTop;
+                }
+            }
+
+            sticky.init = true;
+        }
+    }
+
+    return UI.sticky;
+});