//
// System.Web.UI.WebControls.ImageMap.cs
//
// Authors:
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005 Novell, Inc (http://www.novell.com)
//
//
// 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.
//
#if NET_2_0
using System.ComponentModel;
using System.Security.Permissions;
namespace System.Web.UI.WebControls{
[ParseChildren (true, "HotSpots")]
[DefaultProperty ("HotSpots")]
[DefaultEvent ("Click")]
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[SupportsEventValidation]
public class ImageMap: Image, IPostBackEventHandler
{
HotSpotCollection spots;
static readonly object ClickEvent = new object();
[Category ("Action")]
public event ImageMapEventHandler Click
{
add { Events.AddHandler (ClickEvent, value); }
remove { Events.RemoveHandler (ClickEvent, value); }
}
protected virtual void OnClick (ImageMapEventArgs e)
{
if (Events != null) {
ImageMapEventHandler eh = (ImageMapEventHandler) Events [ClickEvent];
if (eh!= null) eh (this, e);
}
}
[DefaultValueAttribute (HotSpotMode.NotSet)]
public virtual HotSpotMode HotSpotMode {
get {
object o = ViewState ["HotSpotMode"];
return o != null ? (HotSpotMode) o : HotSpotMode.NotSet;
}
set {
ViewState ["HotSpotMode"] = value;
}
}
[DefaultValueAttribute ("")]
public virtual string Target {
get {
object o = ViewState ["Target"];
return o != null ? (string) o : "";
}
set {
ViewState ["Target"] = value;
}
}
[NotifyParentPropertyAttribute (true)]
[PersistenceModeAttribute (PersistenceMode.InnerDefaultProperty)]
[DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Content)]
public HotSpotCollection HotSpots {
get {
if (spots == null) {
spots = new HotSpotCollection ();
if (IsTrackingViewState)
((IStateManager)spots).TrackViewState ();
}
return spots;
}
}
protected override void TrackViewState ()
{
base.TrackViewState ();
if (spots != null) ((IStateManager)spots).TrackViewState ();
}
protected override object SaveViewState ()
{
object ob1 = base.SaveViewState ();
object ob2 = spots != null ? ((IStateManager)spots).SaveViewState () : null;
if (ob1 != null || ob2 != null)
return new Pair (ob1, ob2);
else
return null;
}
protected override void LoadViewState (object savedState)
{
if (savedState == null) {
base.LoadViewState (null);
return;
}
Pair pair = (Pair) savedState;
base.LoadViewState (pair.First);
((IStateManager)HotSpots).LoadViewState (pair.Second);
}
public void RaisePostBackEvent (string eventArgument)
{
ValidateEvent (UniqueID, eventArgument);
HotSpot spot = HotSpots [int.Parse (eventArgument)];
OnClick (new ImageMapEventArgs (spot.PostBackValue));
}
protected override void AddAttributesToRender (HtmlTextWriter writer)
{
base.AddAttributesToRender (writer);
if (spots != null && spots.Count > 0)
writer.AddAttribute (HtmlTextWriterAttribute.Usemap, "#ImageMap" + ClientID);
}
protected internal override void Render (HtmlTextWriter writer)
{
base.Render (writer);
if (spots != null && spots.Count > 0) {
writer.AddAttribute (HtmlTextWriterAttribute.Name, "ImageMap" + ClientID);
writer.RenderBeginTag (HtmlTextWriterTag.Map);
for (int n=0; n<spots.Count; n++) {
HotSpot spot = spots [n];
writer.AddAttribute (HtmlTextWriterAttribute.Shape, spot.MarkupName);
writer.AddAttribute (HtmlTextWriterAttribute.Coords, spot.GetCoordinates ());
writer.AddAttribute (HtmlTextWriterAttribute.Title, spot.AlternateText);
writer.AddAttribute (HtmlTextWriterAttribute.Alt, spot.AlternateText);
if (spot.AccessKey.Length > 0)
writer.AddAttribute (HtmlTextWriterAttribute.Accesskey, spot.AccessKey);
if (spot.TabIndex != 0)
writer.AddAttribute (HtmlTextWriterAttribute.Tabindex, spot.TabIndex.ToString ());
HotSpotMode mode = spot.HotSpotMode != HotSpotMode.NotSet ? spot.HotSpotMode : HotSpotMode;
switch (mode) {
case HotSpotMode.Inactive:
writer.AddAttribute ("nohref", "true", false);
break;
case HotSpotMode.Navigate:
string target = spot.Target.Length > 0 ? spot.Target : Target;
if (!String.IsNullOrEmpty (target))
writer.AddAttribute (HtmlTextWriterAttribute.Target, target);
#if TARGET_J2EE
string navUrl = ResolveClientUrl (spot.NavigateUrl, String.Compare (target, "_blank", StringComparison.InvariantCultureIgnoreCase) != 0);
#else
string navUrl = ResolveClientUrl (spot.NavigateUrl);
#endif
writer.AddAttribute (HtmlTextWriterAttribute.Href, navUrl);
break;
case HotSpotMode.PostBack:
writer.AddAttribute (HtmlTextWriterAttribute.Href, Page.ClientScript.GetPostBackClientHyperlink (this, n.ToString(), true));
break;
}
writer.RenderBeginTag (HtmlTextWriterTag.Area);
writer.RenderEndTag ();
}
writer.RenderEndTag ();
}
}
}
}
#endif
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