/**
* 带筛选功能的下拉框
* 使用方法 <select ngc-select-search name="select1" ng-options="">
* 说明[ select 一定要有name,ng-options 属性]
*/
app.directive('ngcSelectSearch', function ($animate, $compile, $parse) {
function parseOptions(optionsExp, element, scope) {
// ngOptions里的正则
var NG_OPTIONS_REGEXP = /^\s*([\s\S]+?)(?:\s+as\s+([\s\S]+?))?(?:\s+group\s+by\s+([\s\S]+?))?(?:\s+disable\s+when\s+([\s\S]+?))?\s+for\s+(?:([\$\w][\$\w]*)|(?:\(\s*([\$\w][\$\w]*)\s*,\s*([\$\w][\$\w]*)\s*\)))\s+in\s+([\s\S]+?)(?:\s+track\s+by\s+([\s\S]+?))?$/;
var match = optionsExp.match(NG_OPTIONS_REGEXP);
if (!(match)) {
console.log('ng-options 表达式有误')
}
var valueName = match[5] || match[7];
var keyName = match[6];
var displayFn = $parse(match[2]);
var keyFn = $parse(match[1]);
var valuesFn = $parse(match[8]);
var labelArray = [],
idArray = [],
optionValues = [];
scope.$watch(match[8], function (newValue, oldValue) {
if (newValue && newValue.length > 0) {
optionValues = valuesFn(scope) || [];
labelArray = [];
idArray = []
for (var index = 0, l = optionValues.length; index < l; index++) {
var it = optionValues[index];
if (match[2] && match[1]) {
var localIt = {};
localIt[valueName] = it;
var label = displayFn(scope, localIt);
var dataId = keyFn(scope, localIt);
labelArray.push(label);
idArray.push(dataId);
}
}
scope.options = {
'optionValues': optionValues,
'labelArray': labelArray,
'idArray': idArray
}
}
});
}
return {
restrict: 'A',
require: ['ngModel'],
priority: 100,
replace: false,
scope: true,
template: '<div class="chose-container">' +
'<div class="chose-single"><span class="j-view"></span>'+
//'<i class= "glyphicon glyphicon-remove" ></i>' +
'</div> ' +
'<div class="chose-drop chose-hide j-drop">' +
'<div class="chose-search">' +
'<input class="j-key" type="text" autocomplete="off">' +
'</div>' +
'<ul class="chose-result">' +
// '<li ng-repeat="'+repeatTempl+'" data-id="'+keyTempl+'" >{{'+ valueTempl+'}}</li>'+
'</ul>' +
'</div>' +
'</div>',
link: {
pre: function selectSearchPreLink(scope, element, attr, ctrls) {
var tmplNode = $(this.template).first();
var modelName = attr.ngModel,
name = attr.name ? attr.name : ('def' + Date.now());
tmplNode.attr('id', name + '_chosecontianer');
$animate.enter(tmplNode, element.parent(), element);
},
post: function selectSearchPostLink(scope, element, attr, ctrls) {
var choseNode = element.next(); //$('#'+attr.name +'_chosecontianer');
choseNode.addClass(attr.class);
element.addClass('chose-hide');
// 当前选中项
var ngModelCtrl = ctrls[0];
if (!ngModelCtrl || !attr.name) return;
parseOptions(attr.ngOptions, element, scope);
var rs = {};
function setView() {
var currentKey = ngModelCtrl.$modelValue;
if (isNaN(currentKey) || !currentKey) {
currentKey = '';
choseNode.find('.j-view:first').text('请选择');
choseNode.find('i').addClass('chose-hide');
}
if ((currentKey + '').length > 0) {
for (var i = 0, l = rs.idArray.length; i < l; i++) {
if (rs.idArray[i] == currentKey) {
choseNode.find('.j-view:first').text(rs.labelArray[i]);
choseNode.find('i').removeClass('chose-hide');
break;
}
}
}
}
function setViewAndData() {
if (!scope.options) {
return;
}
rs = scope.options;
setView();
}
scope.$watchCollection('options', setViewAndData);
scope.$watch(attr.ngModel, setView);
function getListNodes(value) {
var nodes = [];
value = $.trim(value);
if (rs != null && rs.labelArray != null) {
for (var i = 0, l = rs.labelArray.length; i < l; i++) {
if (rs.labelArray[i].indexOf(value) > -1) {
nodes.push($('<li>').data('id', rs.idArray[i]).text(rs.labelArray[i]))
}
}
}
return nodes;
}
choseNode.on('keyup', '.j-key', function () {
// 搜索输入框keyup，重新筛选列表
var value = $(this).val();
choseNode.find('ul:first').empty().append(getListNodes(value));
return false;
}).on('click', function () {
choseNode.find('.j-drop').removeClass('chose-hide');
if (choseNode.find('.j-view:first').text() != '请选择') {
choseNode.find('i').removeClass('chose-hide');
}
choseNode.find('ul:first').empty().append(getListNodes(choseNode.find('.j-key').val()));
return false;
}).on('click', 'ul>li', function () {
var _this = $(this);
ngModelCtrl.$setViewValue(_this.data('id'));
ngModelCtrl.$render();
choseNode.find('.j-drop').addClass('chose-hide');
return false;
}).on('click', 'i', function () {
ngModelCtrl.$setViewValue('');
ngModelCtrl.$render();
choseNode.find('.j-view:first').text('请选择');
return false;
});
$(document).on("click", function () {
$('.j-drop').addClass('chose-hide');
choseNode.find('i').addClass('chose-hide');
return false;
});
}
}
};
})
Css:
<style>
.chose-hide {
position: absolute !important;
top: -999em !important;
}
.chose-container {
border: none !important;
float: left;
margin-right: 40px;
padding: 0 !important;
position: relative;
}
.chose-container .chose-single {
padding: 6px 12px;
color: #333;
width: 280px;
border: 1px solid #eee;
display: inline-block;
height: 30px;
}
.chose-container .chose-single::after {
content: '';
position: absolute;
border-width: 6px 3px;
border-style: solid;
/* border-top-color: transparent; */
border-left-color: transparent;
border-right-color: transparent;
border-bottom-color: transparent;
right: 8px;
top: 12px;
}
.chose-container .chose-single i {
width: 12px;
float: right;
right: 8px;
font-size: 12px;
height: 12px;
background-color: #eee;
}
.chose-container .chose-drop {
width: 280px;
position: absolute;
border: 1px solid #eee;
z-index: 1000;
background-color: #fff;
}
.chose-container .chose-search input[type='text'] {
margin: 0;
padding-left: 12px;
width: 100%;
height: 30px;
border: 1px solid #ccc;
float: none;
}
.chose-container .chose-result {
max-height: 370px;
overflow-y: scroll;
overflow-x: hidden;
padding-left: 5px;
}
.chose-container .chose-result li {
padding: 5px 12px;
list-style-type: none;
}
.chose-container .chose-result li:hover {
background-color: #e1e2e7;
}
</style>页面html：
<select ngc-select-search class="validate form-control" id="materialClass" ng-options="Optionitem.id as Optionitem.materialClassName for Optionitem in vm.materialClassOption" name="materialClassId" ng-model="vm.material.materialClassId" ng-change="vm.materialClassChange()" required></select>最终效果：
来源：oschina
链接：https://my.oschina.net/u/2494395/blog/4286692