public Tags(TagPage page)
{
this.page = page;
if (!page.metaData.ContainsKey("tags"))
{
page.metaData.Add("tags", "");
}
tags = new HashSet <string>(page.metaData["tags"].Split(';').Where(x => !String.IsNullOrEmpty(x)));
}
public void MoveToIndex()
{
if (index < 0 || index >= pageInfos.Length)
{
return;
}
current = new one.TagPage(one.App.GetPage(pageInfos[index].ID));
tags = new ObservableCollection <string>(current.tags);
OnPropertyChanged();
}
public PageBrowser(one.Section section)
{
this.section = section;
pageInfos = section.PageInfos.ToArray();
if (pageInfos.Length != 0)
{
current = new one.TagPage(one.App.GetPage(pageInfos[0].ID));
tags = new ObservableCollection <string>(current.tags);
}
commonTags = new List <string>();
}
public void UpdateFilters(string filterText)
{
//转换格式
string[] filterTags = filterText.Split(' ', ';').Where(x => x.Length != 0).ToArray();
//连接数据库
var client = new MongoClient("mongodb://127.0.0.1:27017");
var database = client.GetDatabase("xyals");
var collection = database.GetCollection <BsonDocument>("medium");
//如果字符串为空，应当不设置任何筛选条件
if (filterTags.Length != 0)
{
//查询标签数组包含所有指定标签的页面时间
var query = collection
.Find(Builders <BsonDocument> .Filter.All <String>("tags", filterTags))
.Project(Builders <BsonDocument> .Projection.Include("time").Exclude("_id"));
var cursor = query.ToCursor();
var times = new HashSet <DateTime>(from doc in cursor.ToEnumerable() select DateTime.Parse(doc["time"].ToString()));
//根据时间确定是否是所需页面
pageInfos = (from page in section.PageInfos where times.Any(x => x == page.DateTime.ToLocalTime()) select page).ToArray();
}
else
{
pageInfos = section.PageInfos.ToArray();
}
if (pageInfos.Length != 0)
{
current = new one.TagPage(one.App.GetPage(pageInfos[0].ID));
tags = new ObservableCollection <string>(current.tags);
}
else
{
current = null;
tags = null;
}
index = 0;
OnPropertyChanged();
}