Separate initialize, update and destroy functions.

2015-02-11 15:53:41 +00:00
parent 7ab6c5e5ef
commit fa7e169b9f
9 changed files with 888 additions and 795 deletions
@@ -0,0 +1,66 @@
+/* Copyright (c) 2015 Hyunje Alex Jun and other contributors
+ * Licensed under the MIT License
+ */
+'use strict';
+
+var d = require('../lib/dom')
+  , defaultSettings = require('./default-setting')
+  , eventClassFactory = require('../lib/event-class')
+  , guid = require('../lib/guid')
+  , h = require('../lib/helper');
+
+var instances = {};
+
+function Instance(element) {
+  var i = this;
+
+  i.settings = h.clone(defaultSettings);
+  i.containerWidth = null;
+  i.containerHeight = null;
+  i.contentWidth = null;
+  i.contentHeight = null;
+
+  i.isRtl = d.css(element, 'direction') === "rtl";
+  i.eventClass = eventClassFactory();
+  i.ownerDocument = element.ownerDocument || document;
+
+  i.scrollbarXRail = d.appendTo(d.e('div', 'ps-scrollbar-x-rail'), element);
+  i.scrollbarX = d.appendTo(d.e('div', 'ps-scrollbar-x'), i.scrollbarXRail);
+  i.scrollbarXActive = null;
+  i.scrollbarXWidth = null;
+  i.scrollbarXLeft = null;
+  i.scrollbarXBottom = h.toInt(d.css(i.scrollbarXRail, 'bottom'));
+  i.isScrollbarXUsingBottom = i.scrollbarXBottom === i.scrollbarXBottom; // !isNaN
+  i.scrollbarXTop = i.isScrollbarXUsingBottom ? null : h.toInt(d.css(i.scrollbarXRail, 'top'));
+  i.railBorderXWidth = h.toInt(d.css(i.scrollbarXRail, 'borderLeftWidth')) + h.toInt(d.css(i.scrollbarXRail, 'borderRightWidth'));
+  i.railXMarginWidth = h.toInt(d.css(i.scrollbarXRail, 'marginLeft')) + h.toInt(d.css(i.scrollbarXRail, 'marginRight'));
+  i.railXWidth = null;
+
+  i.scrollbarYRail = d.appendTo(d.e('div', 'ps-scrollbar-y-rail'), element);
+  i.scrollbarY = d.appendTo(d.e('div', 'ps-scrollbar-y'), i.scrollbarYRail);
+  i.scrollbarYActive = null;
+  i.scrollbarYHeight = null;
+  i.scrollbarYTop = null;
+  i.scrollbarYRight = h.toInt(d.css(i.scrollbarYRail, 'right'));
+  i.isScrollbarYUsingRight = i.scrollbarYRight === i.scrollbarYRight; // !isNaN
+  i.scrollbarYLeft = i.isScrollbarYUsingRight ? null : h.toInt(d.css(i.scrollbarYRail, 'left'));
+  i.railBorderYWidth = h.toInt(d.css(i.scrollbarYRail, 'borderTopWidth')) + h.toInt(d.css(i.scrollbarYRail, 'borderBottomWidth'));
+  i.railYMarginHeight = h.toInt(d.css(i.scrollbarYRail, 'marginTop')) + h.toInt(d.css(i.scrollbarYRail, 'marginBottom'));
+  i.railYHeight = null;
+}
+
+exports.add = function (element) {
+  var newId = guid();
+  element.dataset.psId = newId;
+  instances[newId] = new Instance(element);
+  return instances[newId];
+};
+
+exports.remove = function (element) {
+  delete instances[element.dataset.psId];
+  delete element.dataset.psId;
+};
+
+exports.get = function (element) {
+  return instances[element.dataset.psId];
+};