private void update_data(JArray datas)
{
var brush_white = new SolidColorBrush(Colors.White);
var brush_gray = new SolidColorBrush(Colors.LightGray);
Items.Clear();
int index = 0;
foreach (var data in datas)
{
//构造每一个条目的记录。
var row = new ListTemplateItem();
var objects = new UIElement[args.columns.Count];
for (int i = 0; i < objects.Length; ++i) //构造一条记录的每一个项。
{
var c = args.columns[i];
var item = new TextBlock();
item.HorizontalAlignment = HorizontalAlignment.Left;
item.VerticalAlignment = VerticalAlignment.Center;
item.FontSize = c.fontsize ?? args.fontsize;
item.Margin = c.margin ?? args.margin;
JToken jdata = data[c.name];
//按类型创建UI内容。
if (c.type == "text")
{
item.Text = jdata.ToString();
}
else if (c.type == "custom")
{
item.Text = (c.data as Func <JToken, string>)(jdata);
}
else if (c.type == "choice")
{
item.Text = (c.data as IDictionary <string, string>)[jdata.ToString()];
}
if (c.customaction != null)
{
item.PreviewMouseLeftButtonDown += (s, e) => {
c.customaction(data);
};
}
if (c.hyperlink != null)
{
var goal = c.hyperlink(data); //局部闭包
item.PreviewMouseLeftButtonDown += (s, e) => { //点击超链接事件。
NavigatorPage.NavigatorGoto(goal.Item1, goal.Item2);
};
}
objects[i] = item;
}
row.SetChildren(gridlength, objects);
row.Background = index % 2 == 0 ? brush_gray : brush_white;
//itemlist[index] = row;
Items.Add(row);
++index;
}
}
/// <summary>
/// 链接生成最新内容，伴随查询参数。
/// </summary>
public void UpdateData()
{
itemlist = null;
var search = SearchBox.Text;
if (search == "")
{
search = null;
}
Task.Run(() => {
var res = new Response[args.urls.Length];
for (int i = 0; i < res.Length; ++i)
{
res[i] = args.api[args.urls[i].url].List(args.getFilter(), getorderings(), search);
}
var flag = true;
foreach (var i in res)
{
if (!i.statuslike("2**"))
{
flag = false;
break;
}
}
if (flag)
{
var datas = res.map(t => t.list) as JArray[];
Dispatcher.Invoke(() => {
//var Items = this.Items;
var brush_white = new SolidColorBrush(Colors.White);
var brush_gray = new SolidColorBrush(Colors.LightGray);
Items.Clear();
int index = 0;
foreach (var data in datas[0])
{
//构造每一个条目的记录。
var row = new ListTemplateItem();
var objects = new UIElement[args.columns.Count];
for (int i = 0; i < objects.Length; ++i) //构造一条记录的每一个项。
{
var c = args.columns[i];
var item = new TextBlock();
item.HorizontalAlignment = HorizontalAlignment.Left;
item.VerticalAlignment = VerticalAlignment.Center;
item.FontSize = c.fontsize ?? args.fontsize;
item.Margin = c.margin ?? args.margin;
//首先过滤名称，检查是主键内容还是副URL的内容。
JToken jdata = null;
if (c.name.Contains("/")) //这表示使用斜线分割的url's name和json's name。
{
var sp = c.name.Split('/');
var url_index = args.urls.firstAt(u => u.name == sp[0]);//得知这是第几条URL。
if (url_index < 0)
{
throw new Exception("找不到对应的URL。Column的name书写错误。");
}
var second_url = args.urls[url_index];//获得副url的引用。
foreach (var seconddata in datas[url_index])
{
if (seconddata[second_url.primarykey].ToString() == data[args.urls[0].primarykey].ToString()) //这个标志相当于二者对等。
{
jdata = seconddata[sp[1]];
break;
}
}
}
else //这表示是主键的内容。
{
jdata = data[c.name];
}
//按类型创建UI内容。
if (c.type == "text")
{
item.Text = jdata.ToString();
}
else if (c.type == "custom")
{
item.Text = (c.data as Func <JToken, string>)(jdata);
}
else if (c.type == "choice")
{
item.Text = (c.data as IDictionary <string, string>)[jdata.ToString()];
}
if (c.customaction != null)
{
item.PreviewMouseLeftButtonDown += (s, e) => {
c.customaction(data);
};
}
if (c.hyperlink != null)
{
var goal = c.hyperlink(data); //局部闭包
item.PreviewMouseLeftButtonDown += (s, e) => { //点击超链接事件。
NavigatorPage.NavigatorGoto(goal.Item1, goal.Item2);
};
}
objects[i] = item;
}
row.SetChildren(gridlength, objects);
row.Background = index % 2 == 0 ? brush_gray : brush_white;
//itemlist[index] = row;
Items.Add(row);
++index;
}
});
}
else //抛出错误，存在不能正确连接的url。
{
NavigatorPage.MsgSystem.Show(null, "错误", res[0].content);
}
});
}