V-Play 文档翻译 ListPage

翻译：qyvlik

应用的一个页面。

VPlayApps 1.0

Inherits: Page

属性

• compactSections : bool

• delegate : alias

• emptyText : alias

• emptyView : alias

• listView : alias

• model : var

• pullToRefreshHandler : alias

• pullToRefreshHandler. : PullToRefreshHandler

• section : alias

信号

• itemSelected(int index, var item)

详细描述

The ListPage component is a convenience item wrapping a single AppListView component into a Page object. It also contains a PullToRefreshHandler, which can be activated by setting pullToRefreshHandler.pullToRefreshEnabled. It is disabled by default in a ListPage.

由一个 AppListView 内嵌到 Page 所组成，也包含一个 PullToRefreshHandler。默认不可用。

A lot of app screens consist just of a single AppListView, therefore this component can save some boilerplate code.

由于内含一个 AppListView，可以减少一些重复代码。

The contained listView comes pre-initialized with a delegate of type SimpleRow. If the section features are used, the SimpleSection type is used as the default section delegate.

使用 SimpleRow 作为 listView 的 delegate，使用 SimpleSection 作为默认的 section。

属性文档

compactSections : bool

当时分段标题（section）时，允许切换内部的 SimpleSection 的样式。可以通过 SimpleSection::style.compactStyle 设置。

delegate : alias

An alias to access and set the ListView::delegate data.

内部的 ListView::delegate 的引用。

emptyText : alias

An alias to access and set the AppListView::emptyText data.

内部 AppListView::emptyText 的引用。

emptyView : alias

An alias to access and set the AppListView::emptyView data.

内部 AppListView::emptyView 的引用。

listView : alias

An alias to access the component’s AppListView child.

内部 AppListView::listView 的引用，用来访问 AppListView 的孩子。

model : var

The model to be used for the ListView::model data.

内部 AppListView::model 的引用。

pullToRefreshHandler : alias

An alias to a PullToRefreshHandler item inside the AppListView.

内部 AppListView 的 PullToRefreshHandler 引用。

Activate it by setting pullToRefreshEnabled to true and connecting the refresh signal.

设置 PullToRefreshHandler::pullToRefreshEnabled 为真，然后连接 refresh 信号。

    emptyText.text: qsTr("下拉更新")    pullToRefreshHandler.pullToRefreshEnabled: listView.contentY <= 0    pullToRefreshHandler.onRefresh: {        pullToRefreshHandler.refreshing = true;        // async....        doALongLoading(function(){            pullToRefreshHandler.refreshing = false;        })    }

section : alias

An alias to access and set the ListView::section configuration to display a ListView with sections. The ListPage uses the SimpleSection type as the ListView::section.delegate by default.

内部 ListView::section 的引用。

Note: Usually, only a model based on the ListModel type supports sections. ListPage automatically uses the AppListView::prepareArraySections function to allow sections also for arrays.

注意：通常情况下，model 只支持 ListModel，来显示 section。但是 ListPage 会自动使用 AppListView::prepareArraySections 来处理，然后显示 section。

使用方法如下：

ListPage {  model: [{ type: "Fruits", text: "Banana" },    { type: "Fruits", text: "Apple" },    { type: "Vegetables", text: "Potato" }]  section.property: "type"}

信号文档

itemSelected(int index, var item)

This convenience handler gets called when a row within the contained listView was selected.

点击列表中某一项时触发。

Note: This is only called if the delegate is not overridden by a custom delegate.

注意：这个信号，只有在没有重写 delegate 的情况下有效。（其实就是使用 SimpleRow 来实现的）