

  <title>功能演示二 - 上传组件</title>

  <div class="layui-card layadmin-header">
    <div class="layui-breadcrumb" lay-filter="breadcrumb">
      <a lay-href="">主页</a>
      <a><cite>组件</cite></a>
      <a><cite>上传组件</cite></a>
      <a><cite>功能演示二</cite></a>
    </div>
  </div>
  
  <div class="layui-fluid">
    <div class="layui-row layui-col-space15">
    
      <div class="layui-col-md12">
        <div class="layui-card">
          <div class="layui-card-header">高级应用：制作一个多文件列表</div>
          <div class="layui-card-body">
            <div class="layui-upload">
              <button type="button" class="layui-btn layui-btn-normal" id="test-upload-testList">选择多文件</button> 
              <div class="layui-upload-list">
                <table class="layui-table">
                  <colgroup>
                    <col>
                    <col width="150">
                    <col width="260">
                    <col width="150">
                  </colgroup>
                  <thead>
                    <tr>
                      <th>文件名</th>
                      <th>大小</th>
                      <th>上传进度</th>
                      <th>操作</th>
                    </tr>
                  </thead>
                  <tbody id="test-upload-demoList"></tbody>
                </table>
              </div>
              <button type="button" class="layui-btn" id="test-upload-testListAction">开始上传</button>
            </div> 
          </div>
        </div>
      </div>
      
      <div class="layui-col-md12">
        <div class="layui-card">
          <div class="layui-card-header">选完文件后不自动上传</div>
          <div class="layui-card-body">
            <div class="layui-upload">
              <button type="button" class="layui-btn layui-btn-normal" id="test-upload-change">选择文件</button>
              <button type="button" class="layui-btn" id="test-upload-change-action">开始上传</button>
            </div>
          </div>
        </div>
      </div>
      
      <div class="layui-col-md12">
        <div class="layui-card">
          <div class="layui-card-header">拖拽上传</div>
          <div class="layui-card-body">
            <div class="layui-upload-drag" id="test-upload-drag">
              <i class="layui-icon"></i>
              <p>点击上传，或将文件拖拽到此处</p>
            </div>
          </div>
        </div>
      </div>
      
      <div class="layui-col-md12">
        <div class="layui-card">
          <div class="layui-card-header">绑定原始文件域</div>
          <div class="layui-card-body">
            <input type="file" name="file" id="test-upload-primary">
          </div>
        </div>
      </div>
      
    </div>
  </div>
  
  <script>
  layui.use(['admin', 'upload', 'element'], function(){
    var $ = layui.jquery
    ,upload = layui.upload
    ,element = layui.element;
    
    //多文件列表示例
    var uploadListIns = upload.render({
      elem: '#test-upload-testList'
      ,elemList: $('#test-upload-demoList') //列表元素对象
      ,url: 'https://httpbin.org/post'
      ,accept: 'file'
      ,multiple: true
      ,number: 3
      ,auto: false
      ,bindAction: '#test-upload-testListAction'
      ,choose: function(obj){   
        var that = this;
        var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列
        //读取本地文件
        obj.preview(function(index, file, result){
          var tr = $(['<tr id="upload-'+ index +'">'
            ,'<td>'+ file.name +'</td>'
            ,'<td>'+ (file.size/1014).toFixed(1) +'kb</td>'
            ,'<td><div class="layui-progress" lay-filter="progress-demo-'+ index +'"><div class="layui-progress-bar" lay-percent=""></div></div></td>'
            ,'<td>'
              ,'<button class="layui-btn layui-btn-xs demo-reload layui-hide">重传</button>'
              ,'<button class="layui-btn layui-btn-xs layui-btn-danger demo-delete">删除</button>'
            ,'</td>'
          ,'</tr>'].join(''));
          
          //单个重传
          tr.find('.demo-reload').on('click', function(){
            obj.upload(index, file);
          });
          
          //删除
          tr.find('.demo-delete').on('click', function(){
            delete files[index]; //删除对应的文件
            tr.remove();
            uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值，以免删除后出现同名文件不可选
          });
          
          that.elemList.append(tr);
          element.render('progress'); //渲染新加的进度条组件
        });
      }
      ,done: function(res, index, upload){ //成功的回调
        var that = this;
        //if(res.code == 0){ //上传成功
          var tr = that.elemList.find('tr#upload-'+ index)
          ,tds = tr.children();
          tds.eq(3).html(''); //清空操作
          delete this.files[index]; //删除文件队列已经上传成功的文件
          return;
        //}
        this.error(index, upload);
      }
      ,allDone: function(obj){ //多文件上传完毕后的状态回调
        console.log(obj)
      }
      ,error: function(index, upload){ //错误回调
        var that = this;
        var tr = that.elemList.find('tr#upload-'+ index)
        ,tds = tr.children();
        tds.eq(3).find('.demo-reload').removeClass('layui-hide'); //显示重传
      }
      ,progress: function(n, elem, e, index){
        element.progress('progress-demo-'+ index, n + '%'); //执行进度条。n 即为返回的进度百分比
      }
    });
    
    //选完文件后不自动上传
    upload.render({
      elem: '#test-upload-change'
      ,url: '/upload/'
      ,auto: false
      //,multiple: true
      ,bindAction: '#test-upload-change-action'
      ,done: function(res){
        console.log(res)
      }
    });
    
    //拖拽上传
    upload.render({
      elem: '#test-upload-drag'
      ,url: '/upload/'
      ,done: function(res){
        console.log(res)
      }
    });
    
    //绑定原始文件域
    upload.render({
      elem: '#test-upload-primary'
      ,url: '/upload/'
      ,done: function(res){
        console.log(res)
      }
    });
  
  });
  </script>