FunctionFilter QML Type
根据对指定“filter”方法的评估，对SortFilterProxyModel 中的数据进行过滤。更多内容...
| Import Statement: | import QtQml.Models |
| Since: | Qt 6.10 |
| Inherits: | |
| Status: | Technology preview |
此类型处于技术预览阶段，可能会有变动。
详细说明
FunctionFilter 允许用户定义指定的“filter”方法，系统将对其进行求值以过滤数据。“filter”方法接受一个参数，并可如下所示定义为内联组件：
SortFilterProxyModel {
sourceModel: model
filters: [
FunctionFilter {
id: functionFilter
property int ageLimit: 20
function filter(age: int) : bool {
return (age <= ageLimit)
}
}
]
}注意： 当指定“filter”方法中使用的任何外部 QML 属性发生变化时，用户 需要显式调用 `SortFilterProxyModel::invalidate `。此行为未来可能会发生变化（例如采用隐式失效机制），届时用户将无需显式调用 `SortFilterProxyModel::invalidate`。
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