protected override void Render(HtmlTextWriter writer)
{
// render nothing if the action does not exist
if (Action == null)
{
return;
}
var actionClickable = true;
if (CheckActionCount)
{
var am = ActionMenu.FindContainerActionMenu(this);
List <ActionBase> scActions = null;
var scenario = string.Empty;
if (am != null)
{
scenario = am.Scenario;
if (!string.IsNullOrEmpty(scenario))
{
scActions = ActionFramework.GetActions(Content.Load(ContextPath), scenario, am.GetReplacedScenarioParameters()).ToList();
}
}
if (scActions != null)
{
if (scActions.Count > 1)
{
actionClickable = false;
}
else if (scActions.Count == 1 &&
string.Equals(scenario, "new", StringComparison.CurrentCultureIgnoreCase) &&
string.Equals(this.ActionName, "add", StringComparison.CurrentCultureIgnoreCase))
{
// change action to the single "New" action found in the parent menu
_action = scActions.First();
_actionChecked = true;
this.Text = this.Text + " " + _action.Text;
}
}
}
if (actionClickable)
{
var claction = Action as ClientAction;
if (claction != null && claction.Callback != null)
{
NavigateUrl = "javascript:";
this.Attributes["onclick"] = claction.Callback;
}
else
{
NavigateUrl = Action.Uri;
}
}
// load html template (provided by the builder)
string templateText = null;
if (!string.IsNullOrEmpty(Template))
{
templateText = HtmlTemplate.GetActionLinkTemplate(Template);
}
// load html template (by default names)
if (string.IsNullOrEmpty(templateText))
{
templateText = IconVisible
? (string.IsNullOrEmpty(IconUrl)
? HtmlTemplate.GetActionLinkTemplate(HtmlTemplate.Names.ActionButton) // icon is rendered as a <span>
: HtmlTemplate.GetActionLinkTemplate(HtmlTemplate.Names.ActionImageButton)) // icon is rendered as an <image> tag
: HtmlTemplate.GetActionLinkTemplate(HtmlTemplate.Names.ActionLink); // no icon
}
// add actionlinkbutton class only if there is no template
if (string.IsNullOrEmpty(templateText))
{
this.CssClass += " sn-actionlinkbutton";
}
// fill control properties according to the current state of the action
FillProperties();
// if a template was found, fill its parameters and render it
if (!string.IsNullOrEmpty(templateText))
{
writer.Write(TemplateManager.Replace(typeof(ActionTemplateReplacer), templateText, this));
return;
}
// backward compatibility (classic ASP.NET behavior, when there is no html template)
base.Render(writer);
}