EXTjS4下拉树|EXTjS4下拉树支持单选多选级联选择 comboxtree EXTjS4下拉树支持单选多选级联

初学EXTjS,代码参照了很多帖,忙活了一天,代码写的比较简单,容易看懂.
本下拉树支持带复选框和不带复选框的JSON数据的,带复选框的下拉树也实现了单选功能,只需配置一下即可!
效果图.

不带checked的json数据格式只支持单选

带jchecked的json数据的单选

带checked的json数据的多选,可支持级联操作,级联分为级联父节点,级联子节点,两者都级联

封装基类代码
:comboxtree.js

Ext.define("Ext.ux.comboboxtree", { extend: "Ext.form.field.Picker", requires: ["Ext.tree.Panel"], initComponent: function() { var self = this; Ext.apply(self, { fieldLabel: self.fieldLabel, labelWidth: self.labelWidth }); self.callParent(); }, createPicker: function() { var self = this; var store = Ext.create('Ext.data.TreeStore', { proxy: { type: 'ajax', url: self.storeUrl }, sorters: [{ property: 'leaf', direction: 'ASC' }, { property: 'text', direction: 'ASC' }], root: { id: self.rootId, text: self.rootText }, nodeParameter: self.treeNodeParameter }); self.picker = new Ext.tree.Panel({ height: 300, autoScroll: true, floating: true, focusOnToFront: false, shadow: true, ownerCt: this.ownerCt, useArrows: true, store: store, rootVisible: false }); self.picker.on({ checkchange: function(record, checked) { var checkModel = self.checkModel; if (checkModel == 'double') { var root = self.picker.getRootNode(); root.cascadeBy(function(node) { if (node.get('text') != record.get('text')) { node.set('checked', false); } }); if (record.get('leaf') && checked) {self.setRawValue(record.get('id')); // 隐藏值 self.setValue(record.get('text')); // 显示值 } else { record.set('checked', false); self.setRawValue(''); // 隐藏值 self.setValue(''); // 显示值 } } else {var cascade = self.cascade; if (checked == true) { if (cascade == 'both' || cascade == 'child' || cascade == 'parent') { if (cascade == 'child' || cascade == 'both') { if (!record.get("leaf") && checked) record.cascadeBy(function(record) { record.set('checked', true); }); } if (cascade == 'parent' || cascade == 'both') { pNode = record.parentNode; for (; pNode != null; pNode = pNode.parentNode) { pNode.set("checked", true); } }}} else if (checked == false) { if (cascade == 'both' || cascade == 'child' || cascade == 'parent') { if (cascade == 'child' || cascade == 'both') { if (!record.get("leaf") && !checked) record.cascadeBy(function(record) {record.set('checked', false); }); }}}var records = self.picker.getView().getChecked(), names = [], values = []; Ext.Array.each(records, function(rec) { names.push(rec.get('text')); values.push(rec.get('id')); }); self.setRawValue(values.join('; ')); // 隐藏值 self.setValue(names.join('; ')); // 显示值 }}, itemclick: function(tree, record, item, index, e, options) { var checkModel = self.checkModel; if (checkModel == 'single') { if (record.get('leaf')) { self.setRawValue(record.get('id')); // 隐藏值 self.setValue(record.get('text')); // 显示值 } else { self.setRawValue(''); // 隐藏值 self.setValue(''); // 显示值 } }} }); return self.picker; }, alignPicker: function() { var me = this, picker, isAbove, aboveSfx = '-above'; if (this.isExpanded) { picker = me.getPicker(); if (me.matchFieldWidth) { picker.setWidth(me.bodyEl.getWidth()); } if (picker.isFloating()) { picker.alignTo(me.inputEl, "", me.pickerOffset); // ""->tl isAbove = picker.el.getY() < me.inputEl.getY(); me.bodyEl[isAbove ? 'addCls': 'removeCls'](me.openCls + aboveSfx); picker.el[isAbove ? 'addCls': 'removeCls'](picker.baseCls + aboveSfx); } } } });

调用方法

Ext.onReady(function() { var com = Ext.create("Ext.ux.comboboxtree", { id : 'name', name : 'name', hiddenName : 'hiddenName', storeUrl : 'data/tree2.json', cascade : 'child',//级联方式:1.child子级联; 2.parent,父级联,3,both全部级联 checkModel:'single',//当json数据为不带checked的数据时只配置为single,带checked配置为double为单选,不配置为多选 width : 270, fieldLabel : '单位树', labelWidth : 60, rootId : '1', rootText : 'DRP', treeNodeParameter : '', renderTo : Ext.getBody() }); });

两种json格式的数据
一,不带复选框的数据

[{ "text": "To Do", "cls": "folder", "expanded": true, "children": [{ "text": "Go jogging", "leaf": true },{ "text": "Take a nap", "leaf": true},{ "text": "Climb Everest", "leaf": true}] },{ "text": "Grocery List", "cls": "folder", "children": [{ "text": "Bananas", "leaf": true},{ "text": "Milk", "leaf": true},{ "text": "Cereal", "leaf": true},{ "text": "Energy foods", "cls": "folder", "children": [{ "text": "Coffee", "leaf": true},{ "text": "Red Bull", "leaf": true}] }] },{ "text": "Remodel Project", "cls": "folder", "children": [{ "text": "Finish the budget", "leaf": true},{ "text": "Call contractors", "leaf": true},{ "text": "Choose design", "leaf": true}] }]

二.带复选框的数据

[{ "text": "To Do", "cls": "folder", "expanded": true, "children": [{ "text": "Go jogging", "leaf": true, "checked": true },{ "text": "Take a nap", "leaf": true, "checked": false },{ "text": "Climb Everest", "leaf": true, "checked": false }] },{ "text": "Grocery List", "cls": "folder", "children": [{ "text": "Bananas", "leaf": true, "checked": false },{ "text": "Milk", "leaf": true, "checked": false },{ "text": "Cereal", "leaf": true, "checked": false },{ "text": "Energy foods", "cls": "folder", "children": [{ "text": "Coffee", "leaf": true, "checked": false },{ "text": "Red Bull", "leaf": true, "checked": false }] }] },{ "text": "Remodel Project", "cls": "folder", "children": [{ "text": "Finish the budget", "leaf": true, "checked": false },{ "text": "Call contractors", "leaf": true, "checked": false },{ "text": "Choose design", "leaf": true, "checked": false }] }]

【EXTjS4下拉树|EXTjS4下拉树支持单选多选级联选择 comboxtree】
如果有帮助记得支持一下哦,可能也有不完善的地方欢迎改进!