move the sticky-kit^Cquery plugin to /lib and see if we want this for the whole app

1 files changed, 265 insertions, 0 deletions

diff --git a/library/sticky-kit/sticky-kit.js b/library/sticky-kit/sticky-kit.js
new file mode 100644
index 000000000..00b1ea2ff
--- /dev/null
+++ b/library/sticky-kit/sticky-kit.js
@@ -0,0 +1,265 @@
+// Generated by CoffeeScript 1.10.0
+
+/**
+@license Sticky-kit v1.1.3 | MIT | Leaf Corcoran 2015 | http://leafo.net
+ */
+
+(function() {
+  var $, win;
+
+  $ = window.jQuery;
+
+  win = $(window);
+
+  $.fn.stick_in_parent = function(opts) {
+    var doc, elm, enable_bottoming, fn, i, inner_scrolling, len, manual_spacer, offset_top, outer_width, parent_selector, recalc_every, sticky_class;
+    if (opts == null) {
+      opts = {};
+    }
+    sticky_class = opts.sticky_class, inner_scrolling = opts.inner_scrolling, recalc_every = opts.recalc_every, parent_selector = opts.parent, offset_top = opts.offset_top, manual_spacer = opts.spacer, enable_bottoming = opts.bottoming;
+    if (offset_top == null) {
+      offset_top = 0;
+    }
+    if (parent_selector == null) {
+      parent_selector = void 0;
+    }
+    if (inner_scrolling == null) {
+      inner_scrolling = true;
+    }
+    if (sticky_class == null) {
+      sticky_class = "is_stuck";
+    }
+    doc = $(document);
+    if (enable_bottoming == null) {
+      enable_bottoming = true;
+    }
+    outer_width = function(el) {
+      var _el, computed, w;
+      if (window.getComputedStyle) {
+        _el = el[0];
+        computed = window.getComputedStyle(el[0]);
+        w = parseFloat(computed.getPropertyValue("width")) + parseFloat(computed.getPropertyValue("margin-left")) + parseFloat(computed.getPropertyValue("margin-right"));
+        if (computed.getPropertyValue("box-sizing") !== "border-box") {
+          w += parseFloat(computed.getPropertyValue("border-left-width")) + parseFloat(computed.getPropertyValue("border-right-width")) + parseFloat(computed.getPropertyValue("padding-left")) + parseFloat(computed.getPropertyValue("padding-right"));
+        }
+        return w;
+      } else {
+        return el.outerWidth(true);
+      }
+    };
+    fn = function(elm, padding_bottom, parent_top, parent_height, top, height, el_float, detached) {
+      var bottomed, detach, fixed, last_pos, last_scroll_height, offset, parent, recalc, recalc_and_tick, recalc_counter, spacer, tick;
+      if (elm.data("sticky_kit")) {
+        return;
+      }
+      elm.data("sticky_kit", true);
+      last_scroll_height = doc.height();
+      parent = elm.parent();
+      if (parent_selector != null) {
+        parent = parent.closest(parent_selector);
+      }
+      if (!parent.length) {
+        throw "failed to find stick parent";
+      }
+      fixed = false;
+      bottomed = false;
+      spacer = manual_spacer != null ? manual_spacer && elm.closest(manual_spacer) : $("<div />");
+      if (spacer) {
+        spacer.css('position', elm.css('position'));
+      }
+      recalc = function() {
+        var border_top, padding_top, restore;
+        if (detached) {
+          return;
+        }
+        last_scroll_height = doc.height();
+        border_top = parseInt(parent.css("border-top-width"), 10);
+        padding_top = parseInt(parent.css("padding-top"), 10);
+        padding_bottom = parseInt(parent.css("padding-bottom"), 10);
+        parent_top = parent.offset().top + border_top + padding_top;
+        parent_height = parent.height();
+        if (fixed) {
+          fixed = false;
+          bottomed = false;
+          if (manual_spacer == null) {
+            elm.insertAfter(spacer);
+            spacer.detach();
+          }
+          elm.css({
+            position: "",
+            top: "",
+            width: "",
+            bottom: ""
+          }).removeClass(sticky_class);
+          restore = true;
+        }
+        top = elm.offset().top - (parseInt(elm.css("margin-top"), 10) || 0) - offset_top;
+        height = elm.outerHeight(true);
+        el_float = elm.css("float");
+        if (spacer) {
+          spacer.css({
+            width: outer_width(elm),
+            height: height,
+            display: elm.css("display"),
+            "vertical-align": elm.css("vertical-align"),
+            "float": el_float
+          });
+        }
+        if (restore) {
+          return tick();
+        }
+      };
+      recalc();
+      if (height === parent_height) {
+        return;
+      }
+      last_pos = void 0;
+      offset = offset_top;
+      recalc_counter = recalc_every;
+      tick = function() {
+        var css, delta, recalced, scroll, will_bottom, win_height;
+        if (detached) {
+          return;
+        }
+        recalced = false;
+        if (recalc_counter != null) {
+          recalc_counter -= 1;
+          if (recalc_counter <= 0) {
+            recalc_counter = recalc_every;
+            recalc();
+            recalced = true;
+          }
+        }
+        if (!recalced && doc.height() !== last_scroll_height) {
+          recalc();
+          recalced = true;
+        }
+        scroll = win.scrollTop();
+        if (last_pos != null) {
+          delta = scroll - last_pos;
+        }
+        last_pos = scroll;
+        if (fixed) {
+          if (enable_bottoming) {
+            will_bottom = scroll + height + offset > parent_height + parent_top;
+            if (bottomed && !will_bottom) {
+              bottomed = false;
+              elm.css({
+                position: "fixed",
+                bottom: "",
+                top: offset
+              }).trigger("sticky_kit:unbottom");
+            }
+          }
+          if (scroll < top) {
+            fixed = false;
+            offset = offset_top;
+            if (manual_spacer == null) {
+              if (el_float === "left" || el_float === "right") {
+                elm.insertAfter(spacer);
+              }
+              spacer.detach();
+            }
+            css = {
+              position: "",
+              width: "",
+              top: ""
+            };
+            elm.css(css).removeClass(sticky_class).trigger("sticky_kit:unstick");
+          }
+          if (inner_scrolling) {
+            win_height = win.height();
+            if (height + offset_top > win_height) {
+              if (!bottomed) {
+                offset -= delta;
+                offset = Math.max(win_height - height, offset);
+                offset = Math.min(offset_top, offset);
+                if (fixed) {
+                  elm.css({
+                    top: offset + "px"
+                  });
+                }
+              }
+            }
+          }
+        } else {
+          if (scroll > top) {
+            fixed = true;
+            css = {
+              position: "fixed",
+              top: offset
+            };
+            css.width = elm.css("box-sizing") === "border-box" ? elm.outerWidth() + "px" : elm.width() + "px";
+            elm.css(css).addClass(sticky_class);
+            if (manual_spacer == null) {
+              elm.after(spacer);
+              if (el_float === "left" || el_float === "right") {
+                spacer.append(elm);
+              }
+            }
+            elm.trigger("sticky_kit:stick");
+          }
+        }
+        if (fixed && enable_bottoming) {
+          if (will_bottom == null) {
+            will_bottom = scroll + height + offset > parent_height + parent_top;
+          }
+          if (!bottomed && will_bottom) {
+            bottomed = true;
+            if (parent.css("position") === "static") {
+              parent.css({
+                position: "relative"
+              });
+            }
+            return elm.css({
+              position: "absolute",
+              bottom: padding_bottom,
+              top: "auto"
+            }).trigger("sticky_kit:bottom");
+          }
+        }
+      };
+      recalc_and_tick = function() {
+        recalc();
+        return tick();
+      };
+      detach = function() {
+        detached = true;
+        win.off("touchmove", tick);
+        win.off("scroll", tick);
+        win.off("resize", recalc_and_tick);
+        $(document.body).off("sticky_kit:recalc", recalc_and_tick);
+        elm.off("sticky_kit:detach", detach);
+        elm.removeData("sticky_kit");
+        elm.css({
+          position: "",
+          bottom: "",
+          top: "",
+          width: ""
+        });
+        parent.position("position", "");
+        if (fixed) {
+          if (manual_spacer == null) {
+            if (el_float === "left" || el_float === "right") {
+              elm.insertAfter(spacer);
+            }
+            spacer.remove();
+          }
+          return elm.removeClass(sticky_class);
+        }
+      };
+      win.on("touchmove", tick);
+      win.on("scroll", tick);
+      win.on("resize", recalc_and_tick);
+      $(document.body).on("sticky_kit:recalc", recalc_and_tick);
+      elm.on("sticky_kit:detach", detach);
+      return setTimeout(tick, 0);
+    };
+    for (i = 0, len = this.length; i < len; i++) {
+      elm = this[i];
+      fn($(elm));
+    }
+    return this;
+  };
+
+}).call(this);