swipe

2017-03-14 22:53:04 +08:00
parent 7674d8d562
commit bfa472e6e5
19 changed files with 701 additions and 3 deletions
@@ -0,0 +1,70 @@
+'use strict';
+
+var extend = Object.assign.bind(Object);
+
+function EventEmitter() {
+  this.__events = {};
+}
+EventEmitter.prototype = {
+  on: function(name, cb) {
+    this.__events[name] || (this.__events[name] = []);
+    this.__events[name].push(cb);
+    return this;
+  },
+  emit: function(name) {
+    var arr = this.__events[name];
+    var argus = Array.prototype.slice.call(arguments, 1);
+    var self = this;
+    if (arr) {
+      arr.forEach(function(cb) {
+        cb.apply(self, argus);
+      })
+    }
+  },
+  removeListener: function(name, fn) {
+    if (this.__events[name] == undefined) {
+      return;
+    }
+    let index;
+    if (fn) {
+      index = this.__events[name].indexOf(fn);
+      if (index > 0) {
+        this.__events[name].splice(index, 1);
+      }
+    } else {
+      delete this.__events[name];
+    }
+  }
+};
+
+const requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
+              window.webkitRequestAnimationFrame || window.msRequestAnimationFrame ||
+              function(callback, element) {
+                return window.setTimeout(callback, 1000 / 60);
+              };
+
+const cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame ||
+              window.webkitCancelAnimationFrame || window.msRequestAnimationFrame ||
+              function(id) {
+                clearTimeout(id);
+              };
+
+const bindEvents = (elem, eventNames, fn) => {
+  eventNames = eventNames.split(/\s+/)
+  eventNames.forEach(eventName => elem.addEventListener(eventName, fn))
+}
+
+const removeEvents = (elem, eventNames, fn) => {
+  eventNames = eventNames.split(/\s+/)
+  eventNames.forEach(eventName => elem.removeEventListener(eventName, fn))
+}
+
+export {
+  extend,
+  EventEmitter,
+  requestAnimationFrame,
+  cancelAnimationFrame,
+  bindEvents,
+  removeEvents
+};
+