comparison src/DML/VendorAssetsBundle/Resources/assets/jquery.preventMacBackScroll/modif/jquery.preventMacBackScroll.js @ 0:493bcb69166c

added public content

+//
+// Prevent horizontal scroll for Back page in Mac 10.7+
+//
+// Mac OSX Lion introduces a nasty behavior: when you are scrolling and
+// the element (or its parents) are no longer scrollable, then horizontal
+// scrolling with two fingers will trigger back page or next page.
+//
+// For now this plugin provides a way to prevent that behavior for Chrome
+// in the case you're scrolling up or left where you can't scroll anymore,
+// which triggers back/next page.
+//
+// Supported browsers: Mac OSX Chrome, Mac OSX Safari, Mac OSX Firefox
+// On all other browsers this script won't do anything
+//
+// Depends on: jquery.mousewheel.js
+//
+// by Pablo Villalba for http://teambox.com
+//
+// Licensed under the MIT License
+//
+
+(function ($) {
+
+  // This code is only valid for Mac
+  if (!navigator.userAgent.match(/Macintosh/)) {
+    return;
+  }
+
+  // Detect browsers
+  // http://stackoverflow.com/questions/5899783/detect-safari-using-jquery
+  var is_chrome = navigator.userAgent.indexOf('Chrome') > -1;
+  var is_safari = navigator.userAgent.indexOf("Safari") > -1;
+  var is_firefox = navigator.userAgent.indexOf('Firefox') > -1;
+
+  // Handle scroll events in Chrome, Safari, and Firefox
+  if (is_chrome || is_safari || is_firefox) {
+
+    // TODO: This only prevents scroll when reaching the topmost or leftmost
+    // positions of a container. It doesn't handle rightmost or bottom,
+    // and Lion scroll can be triggered by scrolling right (or bottom) and then
+    // scrolling left without raising your fingers from the scroll position.
+    $(window).mousewheel(function (e, d, x, y) {
+
+      var prevent_left, prevent_up;
+      
+      absX = Math.abs(x);
+      absY = Math.abs(y);
+      
+      // If none of the parents can be scrolled left when we try to scroll left
+      prevent_left = (absY <= absX) && x < 0 && !_($(e.target).parents()).detect(function (el) {
+        return $(el).scrollLeft() > 0;
+      });
+
+      // If none of the parents can be scrolled up when we try to scroll up
+      prevent_up = (absX <= absY) && y > 0 && !_($(e.target).parents()).detect(function  (el) {
+        return $(el).scrollTop() > 0;
+      });
+
+      // If none of the parents can be scrolled right when we try to scroll right
+      prevent_right = (absY <= absX) && x > 0 && !_($(e.target).parents()).detect(function (el) {
+          var $el = $(el);
+          if ($el.css("overflow") != "scroll") {
+              return false;
+          }
+          var scrollLeft = $el.scrollLeft();
+          var childrenOuterWidth = $el.children().outerWidth();
+          var ownWidth = el.clientWidth;
+          return ownWidth && childrenOuterWidth > ownWidth && childrenOuterWidth - scrollLeft > ownWidth; 
+      });
+
+      // Prevent futile scroll, which would trigger the Back/Next page event
+      if (prevent_left || prevent_up || prevent_right) {
+          e.preventDefault();
+      }
+    });
+
+  }
+
+}(jQuery));