/// <summary>
/// Loads jQuery depending on configuration settings (CDN, WebResource or site url)
/// and injects the full script link into the page.
/// </summary>
/// <param name="control"></param>
/// <param name="jQueryUrl">Optional url to jQuery as a virtual or absolute server path</param>
public static void LoadjQuery(Control control, string jQueryUrl)
{
ClientScriptProxy p = ClientScriptProxy.Current;
if (!string.IsNullOrEmpty(jQueryUrl))
{
p.RegisterClientScriptInclude(control, typeof(ControlResources), jQueryUrl, ScriptRenderModes.HeaderTop);
}
else if (jQueryLoadMode == jQueryLoadModes.WebResource)
{
p.RegisterClientScriptResource(control, typeof(ControlResources), ControlResources.JQUERY_SCRIPT_RESOURCE, ScriptRenderModes.HeaderTop);
}
else if (jQueryLoadMode == jQueryLoadModes.ContentDeliveryNetwork)
{
// Load from CDN Url specified
p.RegisterClientScriptInclude(control, typeof(ControlResources), jQueryCdnUrl, ScriptRenderModes.HeaderTop);
// check if jquery loaded - if it didn't we're not online and use WebResource
string scriptCheck =
@"if (typeof(jQuery) == 'undefined')
document.write(unescape(""%3Cscript src='{0}' type='text/javascript'%3E%3C/script%3E""));";
jQueryUrl = p.GetClientScriptResourceUrl(control, typeof(ControlResources),
ControlResources.JQUERY_SCRIPT_RESOURCE);
p.RegisterClientScriptBlock(control, typeof(ControlResources),
"jquery_register", string.Format(scriptCheck, jQueryUrl), true,
ScriptRenderModes.HeaderTop);
}
return;
}
/// <summary>
/// Registers an individual script item in the page
/// </summary>
/// <param name="script"></param>
private void RegisterScriptItem(ScriptItem script)
{
// Allow inheriting from control which is the default behavior
if (script.RenderMode == ScriptRenderModes.Inherit)
{
script.RenderMode = RenderMode;
}
// Skip over inline scripts
if (script.RenderMode == ScriptRenderModes.Inline)
{
return;
}
// special case jquery load from Content network
if (ScriptLoader.jQueryLoadMode == jQueryLoadModes.ContentDeliveryNetwork &&
script.Resource == ControlResources.JQUERY_SCRIPT_RESOURCE ||
script.Resource == "jquery" || script.Resource == "jquery.js" ||
script.Src.ToLower().Contains("/jquery.js"))
{
ScriptLoader.LoadjQuery(Page);
return;
}
// special case jquery-uiload from Content network
if (script.Src.ToLower().Contains("/jquery-ui.") || script.Resource == "jqueryui" || script.Resource == "jquery-ui")
{
ScriptLoader.LoadjQueryUi(Page, null);
return;
}
string src = string.Empty;
Type ctlType = typeof(ControlResources);
if (script.ResourceControlType != null || !string.IsNullOrEmpty(script.ResourceControl))
{
if (script.ResourceControlType != null)
{
ctlType = script.ResourceControlType;
}
else
{
Control ctl = UrlUtils.FindControlRecursive(Page, script.ResourceControl, false);
if (ctl != null)
{
ctlType = ctl.GetType();
}
else
{
throw new ArgumentException("Invalid Web Control passed for resource retrieval. Please pass a control from the assembly where the resource are located.");
}
}
src = scriptProxy.GetClientScriptResourceUrl(Page, ctlType, script.Resource);
}
else if (!string.IsNullOrEmpty(script.Resource))
{
src = scriptProxy.GetClientScriptResourceUrl(this, ctlType, script.Resource);
}
else
{
src = ResolveUrl(script.Src);
// Fix up the URL so we can allow ~/script syntax
if (script.AllowMinScript && !HttpContext.Current.IsDebuggingEnabled)
{
src = src.ToLower().Replace(".js", MinScriptExtension);
}
}
// if there's a version number implied add a par
if (!string.IsNullOrEmpty(script.Version))
{
if (src.Contains("?"))
{
src += "&ver=" + script.Version;
}
else
{
src += "?ver=" + script.Version;
}
}
scriptProxy.RegisterClientScriptInclude(Page, ctlType, src, script.RenderMode);
}