1 files changed, 51 insertions, 0 deletions
diff --git a/app/dispatch/static/materialize/js/scrollFire.js b/app/dispatch/static/materialize/js/scrollFire.js
new file mode 100644
index 0000000..37750cb
--- /dev/null
+++ b/app/dispatch/static/materialize/js/scrollFire.js
@@ -0,0 +1,51 @@
+(function($) {
+
+  var scrollFireEventsHandled = false;
+
+  // Input: Array of JSON objects {selector, offset, callback}
+  Materialize.scrollFire = function(options) {
+    var onScroll = function() {
+      var windowScroll = window.pageYOffset + window.innerHeight;
+
+      for (var i = 0 ; i < options.length; i++) {
+        // Get options from each line
+        var value = options[i];
+        var selector = value.selector,
+            offset = value.offset,
+            callback = value.callback;
+
+        var currentElement = document.querySelector(selector);
+        if ( currentElement !== null) {
+          var elementOffset = currentElement.getBoundingClientRect().top + window.pageYOffset;
+
+          if (windowScroll > (elementOffset + offset)) {
+            if (value.done !== true) {
+              if (typeof(callback) === 'function') {
+                callback.call(this, currentElement);
+              } else if (typeof(callback) === 'string') {
+                var callbackFunc = new Function(callback);
+                callbackFunc(currentElement);
+              }
+              value.done = true;
+            }
+          }
+        }
+      }
+    };
+
+
+    var throttledScroll = Materialize.throttle(function() {
+      onScroll();
+    }, options.throttle || 100);
+
+    if (!scrollFireEventsHandled) {
+      window.addEventListener("scroll", throttledScroll);
+      window.addEventListener("resize", throttledScroll);
+      scrollFireEventsHandled = true;
+    }
+
+    // perform a scan once, after current execution context, and after dom is ready
+    setTimeout(throttledScroll, 0);
+  };
+
+})(jQuery);