我正在使用我在网上找到的过滤器设置，并且在使用三个组件进行过滤MX：DataGrid（Combobox，Checkbox和Text Input）时遇到了麻烦。复选框和Combobox正在与我的Ifilter接口和过滤器类正常使用，但是我无法使搜索输入正常工作。这是来自源文件的代码
package com.daveoncode.filters {
//Defines a common interface that must be implemented by all the filters.
public interface IFilter {
function apply(item:Object):Boolean;
}
}
package com.daveoncode.filters {
// The only purpose of Filter is to be wrapped by one or more filters (classes which extend AbstractFilter)
public class Filter implements IFilter {
// A wildcard which means "all values are accepted"
public static const ALL_VALUES:String = "*";
public function Filter() {
}
// This is a basic implementation of IFilter interface, the value returned is always true and only apply()
// methods implemented by subclasses of AbstractFilter have real buisiness logic implementation
//@return Boolean <p>Always true</p>
public function apply(item:Object):Boolean {
return true;
}
}
}
package com.daveoncode.filters {
public class SearchFilter extends AbstractFilterDecorator {
// @param target IFilter <p>A reference to a wrapped IFilter object</p>
// @param value Object <p>Value against which the filter is applied</p>
public function SearchFilter(target:IFilter, value:Object) {
super(target, value);
}
// Impl of IFilter int by overr the dummy apply() of AbstractFilterDecorator
override public function apply(item:Object):Boolean {
return this._target.apply(item) && (this._value == item.Package || this._value == Filter.ALL_VALUES);
}
}
}我正在尝试使搜索功能与下面的applyfilterrefresh（）过滤功能一起使用。当前，它确实搜索了数据杂志，但仅过滤案例敏感的精确匹配。我正在寻找每次中风后过滤的。
private function applyFiltersRefresh():void {
var data:ArrayCollection = ArrayCollection(sourceData);
var filter:IFilter = new Filter();
//combo box filtering - works great!
filter = new FacilityTypeFilter(filter, facilityFilter.value);
filter = new BedRangeFilter(filter, bedFilter.value);
//checkbox filtering – works great!
if (hideHealthcareVar == "Healthcare"){
filter = new HideHealthcareFilter(filter, hideHealthcareVar.valueOf());
}
//Search box filtering – needs
if (search.text.length > 0){
var tempSearch:String = search.text;
filter = new HideHealthcareFilter(filter, tempSearch);
}
data.filterFunction = filter.apply;
data.refresh();
}我能够以这种方式过滤我的datagrid（每个键冲程和非案例敏感），但是因为那时过滤器最终会互相覆盖，而不是同时进行两者。这就是为什么我试图将其包含在我的applyfiltersrefresh（）函数中的原因。对不起，我的帖子很长，并在此先感谢您的帮助！
private function budgetGrid_filterFunc(item:Object):Boolean {
if (search.text.length == 0) return true;
var f:String = "ig";
var packageSearch:RegExp = new RegExp(search.text, f);
var packageMatch:Boolean = packageSearch.test(item.Package);
var itemSearch:RegExp = new RegExp(search.text, f);
var itemMatch:Boolean = itemSearch.test(item.ItemNum);
var descriptionSearch:RegExp = new RegExp(search.text, f);
var descriptionMatch:Boolean = descriptionSearch.test(item.ItemDescription);
return (packageMatch || itemMatch || descriptionMatch);
}
private function searchInput_change():void {
if (search.text.length == 0) {
budgetGrid.dataProvider.filterFunction = null;
} else {
budgetGrid.dataProvider.filterFunction = budgetGrid_filterFunc;
}
budgetGrid.dataProvider.refresh();
}
package com.daveoncode.filters {
/**
* @author Davide Zanotti (davidezanotti@gmail.com)
*/
public class searchFilter extends AbstractFilterDecorator {
/**
* @param target IFilter <p>A reference to a wrapped IFilter object</p>
* @param value Object <p>Value against which the filter is applied</p>
*/
public function searchFilter(target:IFilter, value:Object) {
super(target, value);
}
/**
* Implementation of IFilter interface by overriding the dummy apply() of AbstractFilterDecorator
*/
override public function apply(item:Object):Boolean {
var f:String = "ig";
var packageSearch:RegExp = new RegExp(this._value, f);
var packageMatch:Boolean = packageSearch.test(item.Package);
var itemSearch:RegExp = new RegExp(this._value, f);
var itemMatch:Boolean = packageSearch.test(item.ItemNum);
return this._target.apply(item) && (packageMatch || itemMatch);
}
}
}