//
// System.Web.UI.WebControls.ImageButton.cs
//
// Authors:
// Jordi Mas i Hernandez (jordi@ximian.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.
//
using System.Collections.Specialized;
using System.ComponentModel;
using System.Security.Permissions;
namespace System.Web.UI.WebControls{
// CAS
[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
// attributes
[DefaultEvent("Click")]
#if NET_2_0
[Designer ("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
[SupportsEventValidation]
public class ImageButton : Image, IPostBackDataHandler, IPostBackEventHandler, IButtonControl {
#else
public class ImageButton : Image, IPostBackDataHandler, IPostBackEventHandler {
#endif
static readonly object ClickEvent = new object ();
static readonly object CommandEvent = new object ();
int pos_x, pos_y;
public ImageButton ()
{
}
#if ONLY_1_1
[Bindable(false)]
#endif
[DefaultValue(true)]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
#if NET_2_0
[Themeable (false)]
public virtual
#else
public
#endif
bool CausesValidation {
get {
return ViewState.GetBool ("CausesValidation", true);
}
set {
ViewState ["CausesValidation"] = value;
}
}
[Bindable(true)]
[DefaultValue("")]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
#if NET_2_0
[Themeable (false)]
#endif
public string CommandArgument {
get {
return ViewState.GetString ("CommandArgument", "");
}
set {
ViewState ["CommandArgument"] = value;
}
}
[DefaultValue("")]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
#if NET_2_0
[Themeable (false)]
#endif
public string CommandName {
get {
return ViewState.GetString ("CommandName", "");
}
set {
ViewState ["CommandName"] = value;
}
}
#if NET_2_0
[EditorBrowsable (EditorBrowsableState.Always)]
[Browsable (true)]
[DefaultValue (true)]
[Bindable (true)]
public virtual new bool Enabled
{
// Should there be any special code below? Doesn't look so...
get { return base.Enabled; }
set { base.Enabled = value; }
}
[Browsable (false)]
[EditorBrowsable (EditorBrowsableState.Never)]
[Themeable (false)]
[DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
public override bool GenerateEmptyAlternateText
{
get { return false; }
set { throw new NotSupportedException (); }
}
[DefaultValue ("")]
[Themeable (false)]
public virtual string OnClientClick
{
get {
return ViewState.GetString ("OnClientClick", String.Empty);
}
set {
ViewState ["OnClientClick"] = value;
}
}
[Themeable (false)]
#if NET_2_0
[UrlProperty ("*.aspx")]
#else
[UrlProperty]
#endif
[DefaultValue ("")]
[Editor ("System.Web.UI.Design.UrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
public virtual string PostBackUrl {
get {
return ViewState.GetString ("PostBackUrl", String.Empty);
}
set {
ViewState["PostBackUrl"] = value;
}
}
[Themeable (false)]
[DefaultValue ("")]
[WebSysDescription ("")]
[WebCategory ("Behavior")]
public virtual string ValidationGroup
{
get {
return ViewState.GetString ("ValidationGroup", "");
}
set {
ViewState ["ValidationGroup"] = value;
}
}
#endif
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
#if NET_2_0 && HAVE_CONTROL_ADAPTERS
protected virtual new
#else
protected override
#endif
HtmlTextWriterTag TagKey {
get { return HtmlTextWriterTag.Input; }
}
#if NET_2_0
// Gets or sets the value of the ImageButton control's AlternateText property. (MSDN)
protected virtual string Text
{
get {
return AlternateText;
}
set {
AlternateText = value;
}
}
#endif
protected override void AddAttributesToRender (HtmlTextWriter writer)
{
Page page = Page;
if (page != null)
page.VerifyRenderingInServerForm (this);
writer.AddAttribute (HtmlTextWriterAttribute.Type, "image", false);
writer.AddAttribute (HtmlTextWriterAttribute.Name, UniqueID);
base.AddAttributesToRender (writer);
#if NET_2_0
string onclick = OnClientClick;
if (!String.IsNullOrEmpty (onclick))
onclick = ClientScriptManager.EnsureEndsWithSemicolon (onclick);
else
onclick = String.Empty;
if (HasAttributes && Attributes ["onclick"] != null) {
onclick = ClientScriptManager.EnsureEndsWithSemicolon (onclick + Attributes ["onclick"]);
Attributes.Remove ("onclick");
}
if (page != null)
onclick += GetClientScriptEventReference ();
if (onclick.Length > 0)
writer.AddAttribute (HtmlTextWriterAttribute.Onclick, onclick);
#else
if (CausesValidation && page != null && page.AreValidatorsUplevel ()) {
ClientScriptManager csm = new ClientScriptManager (page);
writer.AddAttribute (HtmlTextWriterAttribute.Onclick, csm.GetClientValidationEvent ());
writer.AddAttribute ("language", "javascript");
}
#endif
}
#if NET_2_0
internal virtual string GetClientScriptEventReference ()
{
PostBackOptions options = GetPostBackOptions ();
Page page = Page;
if (options.PerformValidation || !String.IsNullOrEmpty (options.ActionUrl)) {
return page != null ? page.ClientScript.GetPostBackEventReference (options, true) : String.Empty;
} else {
if (page != null)
page.ClientScript.RegisterForEventValidation (options);
return String.Empty;
}
}
protected virtual PostBackOptions GetPostBackOptions ()
{
PostBackOptions options = new PostBackOptions (this);
Page page = Page;
options.ActionUrl = (PostBackUrl.Length > 0 ?
#if TARGET_J2EE
CreateActionUrl (PostBackUrl)
#else
(page != null ? page.ResolveClientUrl (PostBackUrl) : null)
#endif
: null);
options.Argument = String.Empty;
options.ClientSubmit = true;
options.RequiresJavaScriptProtocol = true;
options.PerformValidation = CausesValidation && page != null && page.AreValidatorsUplevel (ValidationGroup);
if (options.PerformValidation)
options.ValidationGroup = ValidationGroup;
else
options.ValidationGroup = null;
return options;
}
#endif
#if NET_2_0
protected virtual
#endif
bool LoadPostData (string postDataKey, NameValueCollection postCollection)
{
string x, y;
string unique = UniqueID;
x = postCollection [unique + ".x"];
y = postCollection [unique + ".y"];
if (x != null && x != "" && y != null && y != "") {
pos_x = Int32.Parse(x);
pos_y = Int32.Parse(y);
Page.RegisterRequiresRaiseEvent (this);
return true;
} else {
x = postCollection [unique];
if (x != null && x != "") {
pos_x = Int32.Parse (x);
pos_y = 0;
Page.RegisterRequiresRaiseEvent (this);
return true;
}
}
return false;
}
#if NET_2_0
protected virtual
#endif
void RaisePostDataChangedEvent ()
{
}
#if NET_2_0
protected virtual
#endif
void RaisePostBackEvent (string eventArgument)
{
#if NET_2_0
ValidateEvent (UniqueID, String.Empty);
#endif
if (CausesValidation)
#if NET_2_0
Page.Validate (ValidationGroup);
#else
Page.Validate ();
#endif
OnClick (new ImageClickEventArgs (pos_x, pos_y));
OnCommand (new CommandEventArgs (CommandName, CommandArgument));
}
bool IPostBackDataHandler.LoadPostData (string postDataKey, NameValueCollection postCollection)
{
return LoadPostData (postDataKey, postCollection);
}
void IPostBackDataHandler.RaisePostDataChangedEvent ()
{
RaisePostDataChangedEvent ();
}
void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
{
RaisePostBackEvent (eventArgument);
}
protected virtual void OnClick (ImageClickEventArgs e)
{
if (Events != null) {
ImageClickEventHandler eh = (ImageClickEventHandler) (Events [ClickEvent]);
if (eh != null)
eh (this, e);
}
}
protected virtual void OnCommand (CommandEventArgs e)
{
if (Events != null) {
CommandEventHandler eh = (CommandEventHandler) (Events [CommandEvent]);
if (eh != null)
eh (this, e);
}
RaiseBubbleEvent (this, e);
}
#if NET_2_0
protected internal
#else
protected
#endif
override void OnPreRender (EventArgs e)
{
if (Page != null && Enabled)
Page.RegisterRequiresPostBack (this);
}
[WebSysDescription ("")]
[WebCategory ("Action")]
public event ImageClickEventHandler Click
{
add {
Events.AddHandler (ClickEvent, value);
}
remove {
Events.RemoveHandler (ClickEvent, value);
}
}
[WebSysDescription ("")]
[WebCategory ("Action")]
public event CommandEventHandler Command
{
add {
Events.AddHandler (CommandEvent, value);
}
remove {
Events.RemoveHandler (CommandEvent, value);
}
}
#if NET_2_0
string IButtonControl.Text
{
get {
return Text;
}
set {
Text = value;
}
}
event EventHandler IButtonControl.Click
{
add {
Events.AddHandler (ClickEvent, value);
}
remove {
Events.RemoveHandler (ClickEvent, value);
}
}
#endif
}
}
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