From 1541f73addc20cf2ae5a9d06a53b93629c9e6d33 Mon Sep 17 00:00:00 2001
From: Hyunje Alex Jun <me@noraesae.net>
Date: Sat, 24 Jan 2015 15:03:52 +0000
Subject: [PATCH] More independent.

---
 src/js/lib/dom.js    | 24 ++++++++++++++++++++++++
 src/js/lib/helper.js |  9 +++++++++
 src/js/plugin/ps.js  | 27 +++++++++++++--------------
 3 files changed, 46 insertions(+), 14 deletions(-)

diff --git a/src/js/lib/dom.js b/src/js/lib/dom.js
index 5ce9bad..5fd9d7c 100644
--- a/src/js/lib/dom.js
+++ b/src/js/lib/dom.js
@@ -49,3 +49,27 @@ exports.css = function (element, styleNameOrObject, styleValue) {
     }
   }
 };
+
+exports.matches = function (element, query) {
+  if (typeof element.matches !== 'undefined') {
+    return element.matches(query);
+  } else {
+    if (typeof element.matchesSelector !== 'undefined') {
+      return element.matchesSelector(query);
+    } else if (element.webkitMatchesSelector !== 'undefined') {
+      return element.webkitMatchesSelector(query);
+    } else if (element.mozMatchesSelector !== 'undefined') {
+      return element.mozMatchesSelector(query);
+    } else if (element.msMatchesSelector !== 'undefined') {
+      return element.msMatchesSelector(query);
+    }
+  }
+};
+
+exports.remove = function (element) {
+  if (typeof element.remove !== 'undefined') {
+    element.remove();
+  } else {
+    element.parentNode.removeChild(element);
+  }
+};
diff --git a/src/js/lib/helper.js b/src/js/lib/helper.js
index e0c7c6a..482c609 100644
--- a/src/js/lib/helper.js
+++ b/src/js/lib/helper.js
@@ -3,6 +3,8 @@
  */
 'use strict';
 
+var d = require('./dom');
+
 exports.toInt = function (x) {
   if (typeof x === 'string') {
     return parseInt(x, 10);
@@ -34,3 +36,10 @@ exports.extend = function (original, source) {
   }
   return result;
 };
+
+exports.isEditable = function (el) {
+  return d.matches(el, "input,[contenteditable]") ||
+         d.matches(el, "select,[contenteditable]") ||
+         d.matches(el, "textarea,[contenteditable]") ||
+         d.matches(el, "button,[contenteditable]");
+};
diff --git a/src/js/plugin/ps.js b/src/js/plugin/ps.js
index 84e0081..89d6326 100644
--- a/src/js/plugin/ps.js
+++ b/src/js/plugin/ps.js
@@ -223,7 +223,7 @@ module.exports = function (element, settingOrCommand) {
 
     $(scrollbarX).bind(eventClass('mousedown'), function (e) {
       currentPageX = e.pageX;
-      currentLeft = $(scrollbarX).position().left;
+      currentLeft = h.toInt(d.css(scrollbarX, 'left'));
       cls.add(element, 'ps-in-scrolling');
 
       $(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
@@ -255,7 +255,7 @@ module.exports = function (element, settingOrCommand) {
 
     $(scrollbarY).bind(eventClass('mousedown'), function (e) {
       currentPageY = e.pageY;
-      currentTop = $(scrollbarY).position().top;
+      currentTop = h.toInt(d.css(scrollbarY, 'top'));
       cls.add(element, 'ps-in-scrolling');
 
       $(ownerDocument).bind(eventClass('mousemove'), mouseMoveHandler);
@@ -424,7 +424,7 @@ module.exports = function (element, settingOrCommand) {
       while (activeElement.shadowRoot) {
         activeElement = activeElement.shadowRoot.activeElement;
       }
-      if ($(activeElement).is(":input,[contenteditable]")) {
+      if (h.isEditable(activeElement)) {
         return;
       }
 
@@ -485,7 +485,7 @@ module.exports = function (element, settingOrCommand) {
     $(scrollbarY).bind(eventClass('click'), stopPropagation);
     $(scrollbarYRail).bind(eventClass('click'), function (e) {
       var halfOfScrollbarLength = h.toInt(scrollbarYHeight / 2);
-      var positionTop = e.pageY - $(scrollbarYRail).offset().top - halfOfScrollbarLength;
+      var positionTop = e.pageY - scrollbarYRail.offsetTop - halfOfScrollbarLength;
       var maxPositionTop = containerHeight - scrollbarYHeight;
       var positionRatio = positionTop / maxPositionTop;
 
@@ -501,7 +501,7 @@ module.exports = function (element, settingOrCommand) {
     $(scrollbarX).bind(eventClass('click'), stopPropagation);
     $(scrollbarXRail).bind(eventClass('click'), function (e) {
       var halfOfScrollbarLength = h.toInt(scrollbarXWidth / 2);
-      var positionLeft = e.pageX - $(scrollbarXRail).offset().left - halfOfScrollbarLength;
+      var positionLeft = e.pageX - scrollbarXRail.offsetLeft - halfOfScrollbarLength;
       var maxPositionLeft = containerWidth - scrollbarXWidth;
       var positionRatio = positionLeft / maxPositionLeft;
 
@@ -570,12 +570,11 @@ module.exports = function (element, settingOrCommand) {
     $(window).bind(eventClass('mousemove'), function (e) {
       if (isSelected) {
         var mousePosition = {x: e.pageX, y: e.pageY};
-        var containerOffset = $(element).offset();
         var containerGeometry = {
-          left: containerOffset.left,
-          right: containerOffset.left + element.offsetWidth,
-          top: containerOffset.top,
-          bottom: containerOffset.top + element.offsetHeight
+          left: element.offsetLeft,
+          right: element.offsetLeft + element.offsetWidth,
+          top: element.offsetTop,
+          bottom: element.offsetTop + element.offsetHeight
         };
 
         if (mousePosition.x < containerGeometry.left + 3) {
@@ -762,10 +761,10 @@ module.exports = function (element, settingOrCommand) {
     $(element).data('perfect-scrollbar', null);
     $(element).data('perfect-scrollbar-update', null);
     $(element).data('perfect-scrollbar-destroy', null);
-    $(scrollbarX).remove();
-    $(scrollbarY).remove();
-    $(scrollbarXRail).remove();
-    $(scrollbarYRail).remove();
+    d.remove(scrollbarX);
+    d.remove(scrollbarY);
+    d.remove(scrollbarXRail);
+    d.remove(scrollbarYRail);
 
     // clean all variables
     scrollbarXActive =