Extjs实现下拉菜单效果

2019-11-20 10:18:19

字体：大中小

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本文实例为大家分享了Extjs实现下拉树效果，供大家参考，具体内容如下

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>text8</title>   <link rel="stylesheet" type="text/css" href="../../../ext-4.2.1/resources/css/ext-all.css" >  <script type="text/javascript" src="../../../ext-4.2.1/bootstrap.js"></script> </head><body>  <script>       Ext.define('TreeComboBox',{           extend : 'Ext.form.field.ComboBox',           store : {            fields:[],            data:[[]]          },           width:300,          editable : false,           allowBlank:false,           multiSelect : true,          listConfig : {            resizable:false,            minWidth:150,            maxWidth:250,          },           _idValue : null,           _txtValue : null,           callback : Ext.emptyFn,           treeObj : null,           initComponent : function(){               this.treeObj=new Ext.tree.Panel({                 border : false,                 autoScroll : true,                 rootVisible: false,                 renderTo:this.treeRenderId,                 root: {                  text: 'root',draggable: false,expanded: true,                     children:[                      {                      text:'一级节点',expanded: true, checked:false ,                        children:[                          { text:'二级节点1',leaf:true,checked:false},                          { text:'二级节点2',leaf:true,checked:false}                          ]                        } ,                         {                      text:'一级节点',expanded: true, checked:false ,                        children:[                          { text:'二级节点1',leaf:true,checked:false},                          { text:'二级节点2',leaf:true,checked:false}                          ]                        }                   ]                 } ,               listeners:{                 checkchange:function(node,state){                   if(node.hasChildNodes()){                     for(var i=0;i<node.childNodes.length;i++){                       node.childNodes[i].set('checked',state);                       }                     }                   }                 }              });                               this.treeRenderId = Ext.id();               this.tpl = "<tpl><div id='"+this.treeRenderId+"'></div></tpl>";                  this.callParent(arguments);               this.on({                   'expand' : function(){                     if(!this.treeObj.rendered&&this.treeObj&&!this.readOnly){                         Ext.defer(function(){                             this.treeObj.render(this.treeRenderId);                         },100,this);                     }                 }             });                              this.treeObj.on('itemclick',function(view,rec){                 /* var roonodes = this.treeObj.getRootNode().childNodes;  //获取主节点                 var childnodes = node.childNodes; //获取zi节点                 if (roonodes.getView().getSelectionCount()==1) {                  for(var i=0;i<childnodes.length;i++){                    this.setValue(this._txtValue = rec.get('text'));                    }                 }*/                  if(rec){                     //node.getUI().checkbox.indeterminate = true; //半选中状态                     this.setValue(this._txtValue = rec.get('text'));                             //this.collapse();//关闭tree                   }               },this);           },       });             //实例化下拉树     var xltree1=new TreeComboBox({       fieldLabel : '下拉树1',       name:'xltree1111',       allowBlank:true     });      var xltree2=new TreeComboBox({       fieldLabel : '下拉树2',       name:'xltree2222',       allowBlank:true     });                     Ext.create('Ext.form.Panel', {       renderTo: Ext.getBody(),       width: 500,       bodyPadding: 10,       title: 'TreeComboBox',       items: [xltree1, xltree2]     });   </script></body></html>

问题：当选中复选框时候，如何使全部选中的条目添加显示到combobox中？

效果：

下面是另一个：

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>tabpanel</title>   <link rel="stylesheet" type="text/css" href="../../../ext-4.2.1/resources/css/ext-all.css" >  <script type="text/javascript" src="../../../ext-4.2.1/bootstrap.js"></script>  </head><body>  <script>        Ext.onReady(function(){            Ext.create('Ext.window.Window',{                id: 'docaddId',                title: 'Preferences',                buttonAlign: 'center',                width:500,                layout:'fit',                //height:400,                resizable:false,                                  items:                    Ext.create('Ext.tab.Panel', {                      //renderTo: Ext.getBody(),                                               items: [{                        title: 'A',                                                 items:[                                                 //Process and associated workstation下拉选框                        {                   xtype:'container',                  fieldLabel:'Workstation',                   items:[{                      xtype:"combobox",                      name : 'Process and associated workstation',                    fieldLabel : 'Workstation',                    id:'aaa',                  layout:'fit',                  width:480,                  editable : false,                    allowBlank : false,                    multiSelect : true,                    store : {                    fields : ['workstationId', 'workstationName'],                    data : [                      {'workstationId':'0',workstationName:'workstation01'},                      {'workstationId':'1',workstationName:'workstation02'},                      {'workstationId':'2',workstationName:'workstation03'},                      {'workstationId':'3',workstationName:'workstation04'}                    ]                    },                    listConfig : {                    itemTpl : Ext.create('Ext.XTemplate','<input type=checkbox>{[values.workstationName]}'),                    onItemSelect : function(record) {                      var node = this.getNode(record);                      if (node) {                      Ext.fly(node).addCls(this.selectedItemCls);                      var checkboxs = node.getElementsByTagName("input");                      if (checkboxs != null)                        var checkbox = checkboxs[0];                      checkbox.checked = true;                      }                    },                    listeners : {                      itemclick : function(view, record, item, index, e, eOpts) {                      var isSelected = view.isSelected(item);                      var checkboxs = item.getElementsByTagName("input");                      if (checkboxs != null) {                        var checkbox = checkboxs[0];                        if (!isSelected) {                        checkbox.checked = true;                        } else {                        checkbox.checked = false;                        }                      }                      }                    }                    },                    queryMode : 'remote',                    displayField : 'workstationName',                    valueField : 'workstationIda',                    }                  ]                         }]                      }, {                        title: 'B'                      }, {                        title: 'C'                                          }, {                        title: 'D'                                            }]                    })                             }).show();         });  </script></body></html>

效果：