HtmlInputImage.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » UI » HtmlControls » C# / CSharp Open Source

Home
C# / CSharp Open Source
1.2.6.4 mono .net core
2.2.6.4 mono core
3.Aspect Oriented Frameworks
4.Bloggers
5.Build Systems
6.Business Application
7.Charting Reporting Tools
8.Chat Servers
9.Code Coverage Tools
10.Content Management Systems CMS
11.CRM ERP
12.Database
13.Development
14.Email
15.Forum
16.Game
17.GIS
18.GUI
19.IDEs
20.Installers Generators
21.Inversion of Control Dependency Injection
22.Issue Tracking
23.Logging Tools
24.Message
25.Mobile
26.Network Clients
27.Network Servers
28.Office
29.PDF
30.Persistence Frameworks
31.Portals
32.Profilers
33.Project Management
34.RSS RDF
35.Rule Engines
36.Script
37.Search Engines
38.Sound Audio
39.Source Control
40.SQL Clients
41.Template Engines
42.Testing
43.UML
44.Web Frameworks
45.Web Service
46.Web Testing
47.Wiki Engines
48.Windows Presentation Foundation
49.Workflows
50.XML Parsers
C# / C Sharp
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source » 2.6.4 mono .net core » System.Web 
System.Web » System » Web » UI » HtmlControls » HtmlInputImage.cs
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//
// System.Web.UI.HtmlControls.HtmlInputImage.cs
//
// Authors:
//  Jackson Harper (jackson@ximian.com)
//
// (C) 2005-2010 Novell, Inc.


//
// TODO: getting the .x and .y in LoadData doesn't work with mozilla
//

using System.Globalization;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Security.Permissions;
using System.Web.Util;

namespace System.Web.UI.HtmlControls{
  // CAS
  [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  // attributes
  [DefaultEvent("ServerClick")]
  [SupportsEventValidation]
  public class HtmlInputImage : HtmlInputControl, IPostBackDataHandler, IPostBackEventHandler 
  {
    static readonly object ServerClickEvent = new object ();

    int clicked_x;
    int clicked_y;

    public HtmlInputImage () : base ("image")
    {
    }

    [DefaultValue(true)]
    [WebSysDescription("")]
    [WebCategory("Behavior")]
    public virtual bool CausesValidation {
      get {
        return ViewState.GetBool ("CausesValidation", true);
      }
      set {
        ViewState ["CausesValidation"] = value;
      }
    }

    [DefaultValue("")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    [WebSysDescription("")]
    [WebCategory("Appearance")]
    public string Align {
      get { return GetAtt ("align"); }
      set { SetAtt ("align", value); }
    }

    [DefaultValue("")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    [Localizable (true)]
    [WebSysDescription("")]
    [WebCategory("Appearance")]
    public string Alt {
      get { return GetAtt ("alt"); }
      set { SetAtt ("alt", value); }
    }

    [DefaultValue("")]
    [WebSysDescription("")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    [WebCategory("Appearance")]
    [UrlProperty]
    public string Src {
      get { return GetAtt ("src"); }
      set { SetAtt ("src", value); }
    }

    [DefaultValue("-1")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    [WebSysDescription("")]
    [WebCategory("Appearance")]
    public int Border {
      get {
        string border = Attributes ["border"];
        if (border == null)
          return -1;
        return Int32.Parse (border, Helpers.InvariantCulture);
      }
      set {
        if (value == -1) {
          Attributes.Remove ("border");
          return;
        }
        Attributes ["border"] = value.ToString (Helpers.InvariantCulture);
      }
    }

    bool LoadPostDataInternal (string postDataKey, NameValueCollection postCollection)
    {
      string x = postCollection [UniqueID + ".x"];
      string y = postCollection [UniqueID + ".y"];

      if (x != null && x.Length != 0 &&
          y != null && y.Length != 0) {
        clicked_x = Int32.Parse (x, Helpers.InvariantCulture);
        clicked_y = Int32.Parse (y, Helpers.InvariantCulture);
        Page.RegisterRequiresRaiseEvent (this);
        return true;
      }

      return false;
    }

    
    void RaisePostBackEventInternal (string eventArgument)
    {
      if (CausesValidation)
        Page.Validate (ValidationGroup);

      OnServerClick (new ImageClickEventArgs (clicked_x, clicked_y));
    }

    void RaisePostDataChangedEventInternal ()
    {
      /* no events to raise */
    }

    [DefaultValue ("")]
    public virtual string ValidationGroup
    {
      get {
        return ViewState.GetString ("ValidationGroup", "");
      }
      set {
        ViewState ["ValidationGroup"] = value;
      }
    }

    protected virtual bool LoadPostData (string postDataKey, NameValueCollection postCollection)
    {
      return LoadPostDataInternal (postDataKey, postCollection);
    }

    protected virtual void RaisePostBackEvent (string eventArgument)
    {
      RaisePostBackEventInternal (eventArgument);
    }

    protected virtual void RaisePostDataChangedEvent ()
    {
      ValidateEvent (UniqueID, String.Empty);
      RaisePostDataChangedEventInternal ();
    }

    bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
    {
      return LoadPostData (postDataKey, postCollection);
    }
    
    void IPostBackDataHandler.RaisePostDataChangedEvent ()
    {
      RaisePostDataChangedEvent();
    }
        
    void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
    {
      RaisePostBackEvent (eventArgument);
    }

    protected internal override void OnPreRender (EventArgs e)
    {
      base.OnPreRender (e);

      Page page = Page;
      if (page != null && !Disabled) {
        page.RegisterRequiresPostBack (this);
        page.RegisterEnabledControl (this);
      }
    }

    protected virtual void OnServerClick (ImageClickEventArgs e)
    {
      ImageClickEventHandler handler = Events [ServerClickEvent] as ImageClickEventHandler;
      if (handler != null)
        handler (this, e);
    }

    protected override void RenderAttributes (HtmlTextWriter writer)
    {
      Page page = Page;
      if (page != null)
        page.ClientScript.RegisterForEventValidation (UniqueID);
      
      if (CausesValidation && page != null && page.AreValidatorsUplevel (ValidationGroup)) {
        ClientScriptManager csm = page.ClientScript;
        Attributes ["onclick"] += csm.GetClientValidationEvent (ValidationGroup);
      }

      PreProcessRelativeReference (writer,"src");
      base.RenderAttributes (writer);
    }

    void SetAtt (string name, string value)
    {
      if ((value == null) || (value.Length == 0))
        Attributes.Remove (name);
      else
        Attributes [name] = value;
    }

    string GetAtt (string name)
    {
      string res = Attributes [name];
      if (res == null)
        return String.Empty;
      return res;
    }

    [WebSysDescription("")]
    [WebCategory("Action")]
    public event ImageClickEventHandler ServerClick {
      add { Events.AddHandler (ServerClickEvent, value); }
      remove { Events.AddHandler (ServerClickEvent, value); }
    }
  }
}
www.java2v.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.