增加cell swipe组件 (#39)

* add cell swipe

* cell swipe

* bugfix

* test

* style

src/index.js

@@ -5,6 +5,7 @@ import Radio from '../packages/radio/index.js';
 import Cell from '../packages/cell/index.js';
 import Icon from '../packages/icon/index.js';
 import CellGroup from '../packages/cell-group/index.js';
+import CellSwipe from '../packages/cell-swipe/index.js';
 import Popup from '../packages/popup/index.js';
 import Dialog from '../packages/dialog/index.js';
 import Picker from '../packages/picker/index.js';
@@ -47,6 +48,7 @@ const install = function(Vue) {
   Vue.component(Cell.name, Cell);
   Vue.component(Icon.name, Icon);
   Vue.component(CellGroup.name, CellGroup);
+  Vue.component(CellSwipe.name, CellSwipe);
   Vue.component(Popup.name, Popup);
   Vue.component(Picker.name, Picker);
   Vue.component(RadioGroup.name, RadioGroup);
@@ -89,6 +91,7 @@ module.exports = {
   Cell,
   Icon,
   CellGroup,
+  CellSwipe,
   Popup,
   Dialog,
   Picker,

src/utils/dom.js

@@ -55,3 +55,44 @@ export function removeClass(el, cls) {
     el.className = trim(curClass);
   }
 };
+export const once = function(el, event, fn) {
+  var listener = function() {
+    if (fn) {
+      fn.apply(this, arguments);
+    }
+    off(el, event, listener);
+  };
+  on(el, event, listener);
+};
+
+export const on = (function() {
+  if (document.addEventListener) {
+    return function(element, event, handler) {
+      if (element && event && handler) {
+        element.addEventListener(event, handler, false);
+      }
+    };
+  } else {
+    return function(element, event, handler) {
+      if (element && event && handler) {
+        element.attachEvent('on' + event, handler);
+      }
+    };
+  }
+})();
+
+export const off = (function() {
+  if (document.removeEventListener) {
+    return function(element, event, handler) {
+      if (element && event) {
+        element.removeEventListener(event, handler, false);
+      }
+    };
+  } else {
+    return function(element, event, handler) {
+      if (element && event) {
+        element.detachEvent('on' + event, handler);
+      }
+    };
+  }
+})();