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IM
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49
im/src/core/directives.js
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49
im/src/core/directives.js
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import Vue from 'vue'
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import Clickoutside from 'element-ui/src/utils/clickoutside'
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// 自定义聚焦指令
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Vue.directive('focus', {
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inserted(el) {
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el.focus()
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},
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})
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// 自定义粘贴指令
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Vue.directive('paste', {
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bind(el, binding, vnode) {
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el.addEventListener('paste', function(event) {
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//这里直接监听元素的粘贴事件
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binding.value(event)
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})
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},
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})
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// 自定义拖拽指令
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Vue.directive('drag', {
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bind(el, binding, vnode) {
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// 因为拖拽还包括拖动时的经过事件,离开事件,和进入事件,放下事件,
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// 浏览器对于拖拽的默认事件的处理是打开拖进来的资源,
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// 所以要先对这三个事件进行默认事件的禁止
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el.addEventListener('dragenter', function(event) {
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event.stopPropagation()
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event.preventDefault()
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})
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el.addEventListener('dragover', function(event) {
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event.stopPropagation()
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event.preventDefault()
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})
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el.addEventListener('dragleave', function(event) {
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event.stopPropagation()
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event.preventDefault()
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})
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el.addEventListener('drop', function(event) {
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// 这里阻止默认事件,并绑定事件的对象,用来在组件上返回事件对象
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event.stopPropagation()
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event.preventDefault()
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binding.value(event)
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})
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},
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})
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// 点击其他地方隐藏指令
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Vue.directive('outside', Clickoutside)
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