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//
// 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 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;
namespace System.Web.UI.HtmlControls {
// CAS
[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[DefaultEvent("ServerClick")]
#if NET_2_0
[SupportsEventValidation]
#endif
public class HtmlInputImage : HtmlInputControl, IPostBackDataHandler,
IPostBackEventHandler {
private static readonly object ServerClickEvent = new object ();
private int clicked_x;
private int clicked_y;
public HtmlInputImage () : base ("image")
{
}
[DefaultValue(true)]
[WebSysDescription("")]
[WebCategory("Behavior")]
#if NET_2_0
public virtual
#else
public
#endif
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)]
#if NET_2_0
[Localizable (true)]
#endif
[WebSysDescription("")]
[WebCategory("Appearance")]
public string Alt {
get { return GetAtt ("alt"); }
set { SetAtt ("alt", value); }
}
[DefaultValue("")]
[WebSysDescription("")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[WebCategory("Appearance")]
#if NET_2_0
[UrlProperty]
#endif
public string Src {
get { return GetAtt ("src"); }
set { SetAtt ("src", value); }
}
#if NET_2_0
[DefaultValue("-1")]
#else
[DefaultValue("")]
#endif
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
[WebSysDescription("")]
[WebCategory("Appearance")]
public int Border {
get {
string border = Attributes ["border"];
if (border == null)
return -1;
return Int32.Parse (border, CultureInfo.InvariantCulture);
}
set {
if (value == -1) {
Attributes.Remove ("border");
return;
}
Attributes ["border"] = value.ToString (CultureInfo.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, CultureInfo.InvariantCulture);
clicked_y = Int32.Parse (y, CultureInfo.InvariantCulture);
Page.RegisterRequiresRaiseEvent (this);
return true;
}
return false;
}
void RaisePostBackEventInternal (string eventArgument)
{
if (CausesValidation)
#if NET_2_0
Page.Validate (ValidationGroup);
#else
Page.Validate ();
#endif
OnServerClick (new ImageClickEventArgs (clicked_x, clicked_y));
}
void RaisePostDataChangedEventInternal ()
{
/* no events to raise */
}
#if NET_2_0
[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 ()
{
RaisePostDataChangedEventInternal ();
}
#endif
bool IPostBackDataHandler.LoadPostData (string postDataKey,
NameValueCollection postCollection)
{
#if NET_2_0
return LoadPostData (postDataKey, postCollection);
#else
return LoadPostDataInternal (postDataKey, postCollection);
#endif
}
void IPostBackDataHandler.RaisePostDataChangedEvent ()
{
#if NET_2_0
RaisePostDataChangedEvent();
#else
RaisePostDataChangedEventInternal ();
#endif
}
void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
{
#if NET_2_0
RaisePostBackEvent (eventArgument);
#else
RaisePostBackEventInternal (eventArgument);
#endif
}
#if NET_2_0
protected internal
#else
protected
#endif
override void OnPreRender (EventArgs e)
{
base.OnPreRender (e);
if (Page != null) {
Page.RegisterRequiresPostBack (this);
}
}
protected virtual void OnServerClick (ImageClickEventArgs e)
{
EventHandler handler = Events [ServerClickEvent] as EventHandler;
if (handler != null)
handler (this, e);
}
protected override void RenderAttributes (HtmlTextWriter writer)
{
if (CausesValidation && Page != null && Page.AreValidatorsUplevel ()) {
ClientScriptManager csm = new ClientScriptManager (Page);
writer.WriteAttribute ("onclick", csm.GetClientValidationEvent ());
}
base.RenderAttributes (writer);
}
private void SetAtt (string name, string value)
{
if (value == null)
Attributes.Remove (name);
else
Attributes [name] = value;
}
private 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); }
}
}
}
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