/// <include file='doc\AdRotator.uex' path='docs/doc[@for="AdRotator.Render"]/*' />
/// <internalonly/>
/// <devdoc>
/// <para>Displays the <see cref='System.Web.UI.WebControls.AdRotator'/> on the client.</para>
/// </devdoc>
protected override void Render(HtmlTextWriter writer)
{
HyperLink bannerLink = new HyperLink();
foreach (string key in Attributes.Keys)
{
bannerLink.Attributes[key] = Attributes[key];
}
if (this.ID != null && this.ID.Length > 0)
{
bannerLink.ID = this.ClientID;
}
if (this.navigateUrl != null && this.navigateUrl.Length > 0)
{
bannerLink.NavigateUrl = ResolveAdRotatorUrl(this.navigateUrl);
}
bannerLink.Target = this.Target;
bannerLink.AccessKey = this.AccessKey;
bannerLink.Enabled = this.Enabled;
bannerLink.TabIndex = this.TabIndex;
bannerLink.RenderBeginTag(writer);
// create inner Image
Image bannerImage = new Image();
// apply styles to image
if (ControlStyleCreated)
{
bannerImage.ApplyStyle(this.ControlStyle);
}
bannerImage.AlternateText = this.alternateText;
if (imageUrl != null && imageUrl.Length > 0)
{
bannerImage.ImageUrl = ResolveAdRotatorUrl(this.imageUrl);
}
bannerImage.ToolTip = this.ToolTip;
bannerImage.RenderControl(writer);
bannerLink.RenderEndTag(writer);;
}
private void RenderLink(HtmlTextWriter writer, AdCreatedEventArgs adArgs)
{
HyperLink link = new HyperLink {
NavigateUrl = adArgs.NavigateUrl,
Target = this.Target
};
if (base.HasAttributes)
{
foreach (string str in base.Attributes.Keys)
{
link.Attributes[str] = base.Attributes[str];
}
}
if (!string.IsNullOrEmpty(this.ID))
{
link.ID = this.ClientID;
}
if (!this.Enabled)
{
link.Enabled = false;
}
string str3 = (string)this.ViewState["AccessKey"];
if (!string.IsNullOrEmpty(str3))
{
link.AccessKey = str3;
}
object obj2 = this.ViewState["TabIndex"];
if (obj2 != null)
{
short num = (short)obj2;
if (num != 0)
{
link.TabIndex = num;
}
}
link.RenderBeginTag(writer);
Image image = new Image();
if (base.ControlStyleCreated)
{
image.ApplyStyle(base.ControlStyle);
}
string alternateText = adArgs.AlternateText;
if (!string.IsNullOrEmpty(alternateText))
{
image.AlternateText = alternateText;
}
else
{
IDictionary adProperties = adArgs.AdProperties;
string str5 = (this.AlternateTextField.Length != 0) ? this.AlternateTextField : "AlternateText";
string str6 = (adProperties == null) ? null : ((string)adProperties[str5]);
if ((str6 != null) && (str6.Length == 0))
{
image.GenerateEmptyAlternateText = true;
}
}
image.UrlResolved = true;
string imageUrl = adArgs.ImageUrl;
if (!string.IsNullOrEmpty(imageUrl))
{
image.ImageUrl = imageUrl;
}
if (adArgs.HasWidth)
{
image.ControlStyle.Width = adArgs.Width;
}
if (adArgs.HasHeight)
{
image.ControlStyle.Height = adArgs.Height;
}
string str8 = (string)this.ViewState["ToolTip"];
if (!string.IsNullOrEmpty(str8))
{
image.ToolTip = str8;
}
image.RenderControl(writer);
link.RenderEndTag(writer);
}
private void RenderLink(HtmlTextWriter writer, AdCreatedEventArgs adArgs)
{
Debug.Assert(writer != null);
Debug.Assert(adArgs != null);
HyperLink bannerLink = new HyperLink();
bannerLink.NavigateUrl = adArgs.NavigateUrl;
bannerLink.Target = Target;
if (HasAttributes)
{
foreach (string key in Attributes.Keys)
{
bannerLink.Attributes[key] = Attributes[key];
}
}
string id = ID;
if (!String.IsNullOrEmpty(id))
{
bannerLink.ID = ClientID;
}
if (!Enabled)
{
bannerLink.Enabled = false;
}
// WebControl's properties use a private flag to determine if a
// property is set and does not return the value unless the flag is
// marked. So here we access those properites (inherited from WebControl)
// directly from the ViewState bag because if ViewState bag reference
// was copied to the helper class in the optimized case during the
// Initialize() method, the flags of the properties wouldn't be set
// in the helper class.
string accessKey = (string)ViewState["AccessKey"];
if (!String.IsNullOrEmpty(accessKey))
{
bannerLink.AccessKey = accessKey;
}
object o = ViewState["TabIndex"];
if (o != null)
{
short tabIndex = (short)o;
if (tabIndex != (short)0)
{
bannerLink.TabIndex = tabIndex;
}
}
bannerLink.RenderBeginTag(writer);
// create inner Image
Image bannerImage = new Image();
// apply styles to image
if (ControlStyleCreated)
{
bannerImage.ApplyStyle(ControlStyle);
}
string alternateText = adArgs.AlternateText;
if (!String.IsNullOrEmpty(alternateText))
{
bannerImage.AlternateText = alternateText;
}
else
{
// 25914 Do not render empty 'alt' attribute if <AlternateText> tag is never specified
IDictionary adProps = adArgs.AdProperties;
string altTextKey = (AlternateTextField.Length != 0)
? AlternateTextField : AdCreatedEventArgs.AlternateTextElement;
string altText = (adProps == null) ? null : (string)adProps[altTextKey];
if (altText != null && altText.Length == 0)
{
bannerImage.GenerateEmptyAlternateText = true;
}
}
// Perf work: AdRotator should have resolved the NavigateUrl and
// ImageUrl when assigning them and have UrlResolved set properly.
bannerImage.UrlResolved = true;
string imageUrl = adArgs.ImageUrl;
if (!String.IsNullOrEmpty(imageUrl))
{
bannerImage.ImageUrl = imageUrl;
}
if (adArgs.HasWidth)
{
bannerImage.ControlStyle.Width = adArgs.Width;
}
if (adArgs.HasHeight)
{
bannerImage.ControlStyle.Height = adArgs.Height;
}
string toolTip = (string)ViewState["ToolTip"];
if (!String.IsNullOrEmpty(toolTip))
{
bannerImage.ToolTip = toolTip;
}
bannerImage.RenderControl(writer);
bannerLink.RenderEndTag(writer);
}
