411 lines
14 KiB
C#
411 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Helper;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Web.Configuration;
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using System.Web.UI;
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using System.Web.UI.HtmlControls;
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namespace Html5Uploader.Controls
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{
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[ParseChildren(true)]
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[PersistChildren(false)]
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[ToolboxData("<{0}:Html5UploaderClient runat=server></{0}:Html5UploaderClient>")]
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public class Html5UploaderClient : Control, INamingContainer
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{
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Dictionary<SettingsNames, object> settings;
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public Html5UploaderClient()
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{
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settings = new Dictionary<SettingsNames, object>();
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RegisterScript = true;
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}
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private ITemplate _viewTemplate;
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[DefaultValue("视图模板")]
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[TemplateContainer(typeof(ViewTemplate))]
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[PersistenceMode(PersistenceMode.InnerProperty)]
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[Browsable(false)]
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public ITemplate ViewTemplate
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{
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get { return _viewTemplate; }
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set { _viewTemplate = value; }
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}
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[Description("客户端事件")]
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[PersistenceMode(PersistenceMode.InnerProperty)]
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public ClientEventsCollection ClientEvents
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{ get; set; }
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[Description("随文件一起提交的参数列表")]
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[PersistenceMode(PersistenceMode.InnerProperty)]
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public PostParametersCollection PostParameters
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{ get; set; }
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[Description("服务端处理程序")]
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[UrlProperty]
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public string Url
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{
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get
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{
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return settings.ContainsKey(SettingsNames.url) ? settings[SettingsNames.url] as string : null;
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}
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set
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{
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settings[SettingsNames.url] = value;
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}
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}
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string _token;
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public string Token {
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get { return _token; }
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set {
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if (value == null || value.Length <= 50)
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{ _token = value; }
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else { throw new Exception("Token的长度不能超过50个字符。"); }
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}
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}
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public string Placeholder
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{
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get
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{
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return settings.ContainsKey(SettingsNames.placeholder) ? settings[SettingsNames.placeholder] as string : null;
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}
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set
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{
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settings[SettingsNames.placeholder] = value;
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}
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}
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public bool Multiple
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{
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get
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{
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return settings.ContainsKey(SettingsNames.multiple) ? (bool)settings[SettingsNames.multiple] : true;
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}
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set
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{
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settings[SettingsNames.multiple] = value;
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}
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}
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public string Accept
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{
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get
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{
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return settings.ContainsKey(SettingsNames.accept) ? settings[SettingsNames.accept] as string : null;
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}
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set
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{
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settings[SettingsNames.accept] = value;
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}
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}
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public string Types
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{
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get
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{
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return settings.ContainsKey(SettingsNames.types) ? settings[SettingsNames.types] as string : null;
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}
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set
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{
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settings[SettingsNames.types] = value;
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}
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}
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public string Timeout
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{
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get
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{
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return settings.ContainsKey(SettingsNames.timeout) ? settings[SettingsNames.timeout] as string : null;
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}
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set
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{
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settings[SettingsNames.timeout] = value;
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}
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}
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public int MaxQueue
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{
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get
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{
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return settings.ContainsKey(SettingsNames.maxQueue) ? (int)settings[SettingsNames.maxQueue] : 2;
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}
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set
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{
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settings[SettingsNames.maxQueue] = value;
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}
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}
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public bool Dragable
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{
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get
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{
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return settings.ContainsKey(SettingsNames.dragable) ? (bool)settings[SettingsNames.dragable] : true;
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}
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set
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{
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settings[SettingsNames.dragable] = value;
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}
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}
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public string DragContainer
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{
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get
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{
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return settings.ContainsKey(SettingsNames.dragContainer) ? settings[SettingsNames.dragContainer] as string : null;
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}
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set
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{
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settings[SettingsNames.dragContainer] = value;
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}
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}
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public string Progress
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{
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get
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{
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return settings.ContainsKey(SettingsNames.progress) ? settings[SettingsNames.progress] as string : null;
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}
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set
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{
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settings[SettingsNames.progress] = value;
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}
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}
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public string BlobSize
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{
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get
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{
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return settings.ContainsKey(SettingsNames.blobSize) ? settings[SettingsNames.blobSize] as string : null;
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}
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set
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{
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settings[SettingsNames.blobSize] = value;
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}
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}
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public UploaderSliceds Sliced
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{
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get
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{
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return settings.ContainsKey(SettingsNames.sliced) ? (UploaderSliceds)settings[SettingsNames.sliced] : UploaderSliceds.Auto;
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}
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set
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{
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settings[SettingsNames.sliced] = value;
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}
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}
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public string LimitSize
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{
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get
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{
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return settings.ContainsKey(SettingsNames.limitSize) ? settings[SettingsNames.limitSize] as string : null;
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}
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set
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{
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settings[SettingsNames.limitSize] = value;
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}
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}
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public string ParseResult
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{
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get
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{
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return settings.ContainsKey(SettingsNames.parseResult) ? settings[SettingsNames.parseResult] as string : null;
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}
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set
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{
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settings[SettingsNames.parseResult] = value;
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}
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}
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public bool RegisterScript { get; set; }
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int ParseTimeout(string v)
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{
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string[] units = new string[] { "ms", "ss", "mm", "hh" };
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Func<string, int> fn = u =>
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{
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for (int i = 0; i < units.Length; i++) { if (units[i] == u)return i; }
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return 0;
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};
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Regex rgx = new Regex(@"^\s*(\d+)\s*(ms|(ss)|(mm)|(hh))?\s*$", RegexOptions.IgnoreCase);
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var m = rgx.Match(v);
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if (m == null || !m.Success)
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{ throw new ArgumentException("“" + v + "”无效的表达式,如：二十四小时“24hh”的格式"); }
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int time;
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int.TryParse(m.Groups[1].Value, out time);
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int index = fn(m.Groups[2].Success ? m.Groups[2].Value.ToLower() : "ss");
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while (index-- > 0)
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{
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time *= (index == 1 ? 1000 : 60);
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}
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return time;
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}
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long ParseSize(string v)
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{
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string[] units = new string[] { "B", "KB", "MB", "GB", "TB" };
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Func<string, int> fn = u =>
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{
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for (int i = 0; i < units.Length; i++) { if (units[i] == u)return i; }
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return 0;
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};
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Regex rgx = new Regex(@"^\s*(\d+)\s*(B|(KB)|(MB)|(GB)|(TB))?\s*$", RegexOptions.IgnoreCase);
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var m = rgx.Match(v);
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if (m == null || !m.Success)
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{ throw new ArgumentException("“"+v+"”无效的表达式，请参照“232MB”的格式"); }
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long size;
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long.TryParse(m.Groups[1].Value, out size);
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int index = fn(m.Groups[2].Success ? m.Groups[2].Value.ToUpper() : "MB");
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while (index-- > 0)
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{
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size *= 1024;
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}
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return size;
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}
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string ParseSetting(SettingsNames key,object v)
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{
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if (!settings.ContainsKey(key)) return null;
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string s;
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long size;
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switch (key)
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{
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case SettingsNames.url:
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s= v as string;
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if (!string.IsNullOrWhiteSpace(s))
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{ s = "\"" + ConvertHelper.ConvertToClientString(ResolveUrl(s)) + "\""; }
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return s;
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case SettingsNames.maxQueue:
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return v == null ? null : v.ToString();
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case SettingsNames.blobSize:
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size = ParseSize(v as string);
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long max=(((HttpRuntimeSection)WebConfigurationManager.OpenWebConfiguration("/").GetSection("system.web/httpRuntime")).MaxRequestLength-2)*1024;
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return (size > max ? max : size).ToString();
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case SettingsNames.limitSize:
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size = ParseSize(v as string);
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return size.ToString();
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case SettingsNames.timeout:
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return ParseTimeout(v as string).ToString();
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case SettingsNames.dragable:
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case SettingsNames.multiple:
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return ((bool)v) ? "true" : "false";
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case SettingsNames.sliced:
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return ((UploaderSliceds)v) != UploaderSliceds.Auto ? ((UploaderSliceds)v).GetHashCode().ToString() : null;
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case SettingsNames.dragContainer:
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case SettingsNames.placeholder:
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case SettingsNames.progress:
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s = (v + "").Trim();
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if (s.StartsWith("$:"))
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{ s = s.Substring(2); }
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else { s = "\"" + ConvertHelper.ConvertToClientString(s) + "\""; }
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return s;
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case SettingsNames.parseResult:
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s = (v + "").Trim();
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if (s.StartsWith("javascript:", StringComparison.CurrentCultureIgnoreCase))
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{ s = "function(serverData){\n" + s.Substring(11) + "\n}"; }
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return s;
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default:
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s= v as string;
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if (!string.IsNullOrWhiteSpace(s))
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{ s = "\"" + ConvertHelper.ConvertToClientString(s) + "\""; }
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return s;
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}
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}
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protected override void OnInit(EventArgs e)
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{
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base.OnInit(e);
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if (RegisterScript) { RegisterClientScript(); }
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}
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protected override void Render(HtmlTextWriter writer)
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{
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base.Render(writer);
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Dictionary<string, object> AddedKey;
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bool flag;
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StringBuilder sb = new StringBuilder();
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foreach (var s in settings)
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{
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string v = ParseSetting(s.Key, s.Value);
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if (!string.IsNullOrWhiteSpace(v))
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{ sb.AppendFormat("{0}{1}:{2}", sb.Length > 0 ? "," : null, s.Key, v); }
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}
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if (!string.IsNullOrWhiteSpace(_token))
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{
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if (PostParameters == null) { PostParameters = new PostParametersCollection(); }
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PostParameters.Insert(0, new PostParameter("token", _token));
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}
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if (PostParameters != null && PostParameters.Count > 0)
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{
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AddedKey = new Dictionary<string, object>();
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flag = false;
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sb.AppendFormat("{0}params:{{", sb.Length > 0 ? "," : null);
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foreach (var s in PostParameters)
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{
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AddedKey.Add(s.Key, null);
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sb.AppendFormat("{0}\"{1}\":\"{2}\"", flag ? "," : null
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, ConvertHelper.ConvertToClientString(s.Key).Trim()
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, ConvertHelper.ConvertToClientString(s.Value).Trim());
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flag = true;
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}
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sb.Append("}");
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AddedKey = null;
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}
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if (sb.Length > 0)
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{
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sb.Insert(0, "{\n");
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sb.Append("\n}");
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}
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if (ClientEvents != null && ClientEvents.Count > 0)
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{
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flag = false;
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AddedKey = new Dictionary<string, object>();
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foreach (var s in ClientEvents)
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{
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string k = s.EventName.ToString(), v = s.Handle;
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if (string.IsNullOrWhiteSpace(v)) continue;
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AddedKey.Add(k, null);
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if (v.StartsWith("javascript:", StringComparison.CurrentCultureIgnoreCase))
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{ v = "function(file,args){\n" + v.Substring(11) + "\n}"; }
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sb.AppendFormat("{0}\"{1}\":{2}", flag ? "," : ",\n{\n", k, v);
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flag = true;
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}
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if (flag)
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{
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sb.Append("\n}");
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}
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}
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string js = "var " + this.ClientID + "=new Uploader(" + sb.ToString() + ")";
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writer.Write("<script>\n"+js+"\n</script>");
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}
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protected override void CreateChildControls()
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{
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base.CreateChildControls();
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if (ViewTemplate != null)
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{
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ViewTemplate item = new ViewTemplate();
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ViewTemplate.InstantiateIn(item);
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this.Controls.Add(item);
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}
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}
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string GetWebResourceUrl(string rn)
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{
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return Page.ClientScript.GetWebResourceUrl(this.GetType(), rn);
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}
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void RegisterClientScript()
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{
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if (this.Page.Header != null)
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{
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string id = "Uploader.release.min.js";
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if (this.Page.Header.FindControl(id) == null)
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{
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Control container = new Control();
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container.ID = id;
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HtmlGenericControl js = new HtmlGenericControl("script");
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js.Attributes.Add("src", GetWebResourceUrl("Html5Uploader.Controls.Uploader.release.min.js"));
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js.InnerHtml = " ";
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container.Controls.Add(js);
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Page.Header.Controls.Add(js);
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}
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}
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}
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}
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}
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