当前位置:主页 > 行业指南 >

Extjs4.x Ext.tree.Panel过滤Filter以及trigger field的使用

发布时间:19-12-06 阅读:226

Extjs4.x中已经取消了组件Ext.Tree.TreeFilter功能,却掉落了树形布局的过滤功能,要实现该功能只能自己写了.

Tree节点筛选UI很简单,一个Tbar,一个trigger即可办理问题,剩下的是逻辑代码了。

1.tbar没啥好解析的

2.trigger几个对照紧张的属性

triggerCls:文本框右侧的按钮样式,主要有4种

x-form-clear-trigger// the X icon

x-form-search-trigger// the magnifying glass iconx-form-trigger// the down arrow (default for combobox) icon

x-form-date-trigger// the calendar icon (just in case)

onTriggerClick:单击右侧按钮的事故

emptyText:值为空时刻显示的翰墨

hideTrigger:是否显示触发按钮

更多请参考:http://docs.sencha.com/extjs/4.2.1/#!/api/Ext.form.field.Trigger-cfg-hideTrigger

3.剩下最紧张的一个是逻辑处置惩罚类

完备的案例代码如下:

Ext.define("WMS.view.Tree", {

extend: 'Ext.tree.Panel',

alias: 'widget.wmsTree',

id: 'wmsMenuTreePanel',

title: "功能导航",

margins: '0 0 0 3',

width: 200,

region: 'west',

animate: true,

store: 'VPTreeMenu',

autoScroll: true,

rootVisible: false,

loadMsg: true,

collapsible: true,//是否可以折叠

split: true,

tools: [{

type: 'expand',

handler: function () { Ext.getCmp("wmsMenuTreePanel").expandAll(); }

}, {

type: 'collapse',

handler: function () { Ext.getCmp("wmsMenuTreePanel").collapseAll(); }

}],

//这里不要忘怀

mixins: {

treeFilter: 'WMS.view.TreeFilter'

},

tbar: [{

xtype: 'trigger',

triggerCls: 'x-form-clear-trigger',

onTriggerClick: function () {

this.setValue('');

Ext.getCmp("wmsMenuTreePanel").clearFilter();

},

width:'100%',

emptyText:'快速检索功能',

enableKeyEvents: true,

listeners: {

keyup: {

fn: function (field, e) {

if (Ext.EventObject.ESC == e.getKey()) {

field.onTriggerClick();

} else {

Ext.getCmp("wmsMenuTreePanel").filterByText(this.getRawValue());

}

}

}

}

}]

});

/**

* Add basic filtering to Ext.tree.Panel. Add as a mixin:

*mixins: {

*treeFilter: 'WMS.view.TreeFilter'

*}

*/

Ext.define('WMS.view.TreeFilter', {

filterByText: function(text) {

this.filterBy(text, 'text');

},

/**

* Filter the tree on a string, hiding all nodes expect those which match and their parents.

* @param The term to filter on.

* @param The field to filter on (i.e. 'text').

*/

filterBy: function(text, by) {

this.clearFilter();

var view = this.getView(),

me = this,

nodesAndParents = [];

// Find the nodes which match the search term, expand them.

// Then add them and their parents to nodesAndParents.

this.getRootNode().cascadeBy(function(tree, view){

var currNode = this;

if(currNode && currNode.data[by] && currNode.data[by].toString().toLowerCase().indexOf(text.toLowerCase()) > -1) {

me.expandPath(currNode.getPath());

while(currNode.parentNode) {

nodesAndParents.push(currNode.id);

currNode = currNode.parentNode;

}

}

}, null, [me, view]);

// Hide all of the nodes which aren't in nodesAndParents

this.getRootNode().cascadeBy(function(tree, view){

var uiNode = view.getNodeByRecord(this);

if(uiNode && !Ext.Array.contains(nodesAndParents, this.id)) {

Ext.get(uiNode).setDisplayed('none');

}

}, null, [me, view]);

},

clearFilter: function() {

var view = this.getView();

this.getRootNode().cascadeBy(function(tree, view){

var uiNode = view.getNodeByRecord(this);

if(uiNode) {

Ext.get(uiNode).setDisplayed('table-row');

}

}, null, [this, view]);

}

});

假如你想对节点的中文做些处置惩罚,例如按照拼音首字母进行搜索,只必要变化如下这句代码即可

currNode.data[by].toString().toLowerCase().indexOf(text.toLowerCase()) > -1更多扩展,可以自己改动类 WMS.view.TreeFilter



上一篇:第二届“礼让斑马线”广场舞总决赛将办
下一篇:东莞启用5个宪法主题公园。