private void RenderHead(DropDownMenuRenderingContext renderingContext)
{
string cssClass = CssClassHead;
if (!renderingContext.Control.Enabled)
{
cssClass += " " + CssClassDisabled;
}
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Class, cssClass);
if (HasCustomTitle(renderingContext) && HasTitleText(renderingContext))
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Title, renderingContext.Control.TitleText);
}
renderingContext.Writer.RenderBeginTag(HtmlTextWriterTag.Span);
if (HasCustomTitle(renderingContext))
{
renderingContext.Control.RenderHeadTitleMethod(renderingContext.Writer);
}
else if (HasDefaultTitle(renderingContext))
{
RenderDefaultTitle(renderingContext);
}
RenderDropdownButton(renderingContext);
renderingContext.Writer.RenderEndTag();
}
private void RegisterEventHandlerScripts(DropDownMenuRenderingContext renderingContext)
{
if (!renderingContext.Control.Enabled)
{
return;
}
string key = renderingContext.Control.ClientID + "_KeyDownEventHandlerBindScript";
string getSelectionCount = (string.IsNullOrEmpty(renderingContext.Control.GetSelectionCount)
? "null"
: renderingContext.Control.GetSelectionCount);
string script = string.Format(
"$('#{0}').keydown( function(event){{ DropDownMenu_OnKeyDown(event, document.getElementById('{0}'), {1}); }} );",
renderingContext.Control.ClientID,
getSelectionCount);
renderingContext.Control.Page.ClientScript.RegisterStartupScriptBlock(renderingContext.Control, typeof(ClientScriptBehavior), key, script);
if (renderingContext.Control.Enabled && renderingContext.Control.Visible && renderingContext.Control.Mode == MenuMode.DropDownMenu)
{
key = renderingContext.Control.ClientID + "_ClickEventHandlerBindScript";
string elementReference = string.Format("$('#{0}')", renderingContext.Control.ClientID);
string menuIDReference = string.Format("'{0}'", renderingContext.Control.ClientID);
script = renderingContext.Control.GetBindOpenEventScript(elementReference, menuIDReference, false);
renderingContext.Control.Page.ClientScript.RegisterStartupScriptBlock(renderingContext.Control, typeof(ClientScriptBehavior), key, script);
}
}
public void RenderAsContextMenu(DropDownMenuRenderingContext renderingContext)
{
ArgumentUtility.CheckNotNull("renderingContext", renderingContext);
RegisterMenuItems(renderingContext);
RegisterEventHandlerScripts(renderingContext);
}
protected virtual string GetDisabledIconUrl(DropDownMenuRenderingContext renderingContext, WebMenuItem menuItem, bool showIcon)
{
string disabledIcon = "null";
if (showIcon && menuItem.DisabledIcon.HasRenderingInformation)
{
string url = menuItem.DisabledIcon.Url;
disabledIcon = "'" + renderingContext.Control.ResolveClientUrl(url) + "'";
}
return(disabledIcon);
}
public void Render(DropDownMenuRenderingContext renderingContext)
{
ArgumentUtility.CheckNotNull("renderingContext", renderingContext);
RegisterMenuItems(renderingContext);
RegisterEventHandlerScripts(renderingContext);
AddAttributesToRender(renderingContext);
renderingContext.Writer.RenderBeginTag(HtmlTextWriterTag.Span);
RenderHead(renderingContext);
renderingContext.Writer.RenderEndTag();
}
private void AddAttributesToRender(DropDownMenuRenderingContext renderingContext)
{
AddStandardAttributesToRender(renderingContext);
if (string.IsNullOrEmpty(renderingContext.Control.CssClass) && string.IsNullOrEmpty(renderingContext.Control.Attributes["class"]))
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBase);
}
if (renderingContext.Control.ControlStyle.Width.IsEmpty)
{
if (!renderingContext.Control.Width.IsEmpty)
{
renderingContext.Writer.AddStyleAttribute(HtmlTextWriterStyle.Width, renderingContext.Control.Width.ToString());
}
}
}
private void RenderDefaultTitle(DropDownMenuRenderingContext renderingContext)
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassDropDownLabel);
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Id, renderingContext.Control.ClientID + "_DropDownMenuLabel");
if (renderingContext.Control.Enabled)
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Href, "#");
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Onclick, "return false;");
}
renderingContext.Writer.RenderBeginTag(HtmlTextWriterTag.A);
if (HasTitleIcon(renderingContext))
{
renderingContext.Control.TitleIcon.Render(renderingContext.Writer, renderingContext.Control);
}
if (HasTitleText(renderingContext))
{
renderingContext.Writer.Write(renderingContext.Control.TitleText);
renderingContext.Writer.Write(c_whiteSpace);
}
renderingContext.Writer.RenderEndTag();
}
private void RenderDropdownButton(DropDownMenuRenderingContext renderingContext)
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassDropDownButton);
if (!HasDefaultTitle(renderingContext) || HasCustomTitle(renderingContext))
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Id, renderingContext.Control.ClientID + "_DropDownMenuButton");
if (renderingContext.Control.Enabled)
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Href, "#");
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Onclick, "return false;");
}
}
if (HasCustomTitle(renderingContext) && HasTitleText(renderingContext))
{
renderingContext.Writer.AddAttribute(HtmlTextWriterAttribute.Title, renderingContext.Control.TitleText);
}
renderingContext.Writer.RenderBeginTag(HtmlTextWriterTag.A);
IconInfo.CreateSpacer(ResourceUrlFactory).Render(renderingContext.Writer, renderingContext.Control);
renderingContext.Writer.RenderEndTag();
}
private void AppendMenuItem(DropDownMenuRenderingContext renderingContext, StringBuilder stringBuilder, WebMenuItem menuItem, int menuItemIndex)
{
string href = "null";
string target = "null";
bool isCommandEnabled = true;
var diagnosticMetadataTriggersNavigation = false;
var diagnosticMetadataTriggersPostBack = false;
if (menuItem.Command != null)
{
bool isActive = menuItem.Command.Show == CommandShow.Always ||
renderingContext.Control.IsReadOnly && menuItem.Command.Show == CommandShow.ReadOnly ||
!renderingContext.Control.IsReadOnly && menuItem.Command.Show == CommandShow.EditMode;
isCommandEnabled = isActive && menuItem.Command.Type != CommandType.None;
if (isCommandEnabled)
{
bool isPostBackCommand = menuItem.Command.Type == CommandType.Event ||
menuItem.Command.Type == CommandType.WxeFunction;
if (isPostBackCommand)
{
// Clientside script creates an anchor with href="#" and onclick=function
string argument = menuItemIndex.ToString();
href = renderingContext.Control.Page.ClientScript.GetPostBackClientHyperlink(renderingContext.Control, argument);
href = ScriptUtility.EscapeClientScript(href);
href = "'" + href + "'";
diagnosticMetadataTriggersPostBack = true;
}
else if (menuItem.Command.Type == CommandType.Href)
{
href = menuItem.Command.HrefCommand.FormatHref(menuItemIndex.ToString(), menuItem.ItemID);
href = "'" + renderingContext.Control.ResolveClientUrl(href) + "'";
target = "'" + menuItem.Command.HrefCommand.Target + "'";
diagnosticMetadataTriggersNavigation = true;
}
}
}
bool showIcon = menuItem.Style == WebMenuItemStyle.Icon || menuItem.Style == WebMenuItemStyle.IconAndText;
bool showText = menuItem.Style == WebMenuItemStyle.Text || menuItem.Style == WebMenuItemStyle.IconAndText;
string icon = GetIconUrl(renderingContext, menuItem, showIcon);
string disabledIcon = GetDisabledIconUrl(renderingContext, menuItem, showIcon);
string text = showText ? "'" + menuItem.Text + "'" : "null";
string diagnosticMetadataText = showText ? menuItem.Text : "";
var diagnosticMetadataJson = "null";
if (IsDiagnosticMetadataRenderingEnabled)
{
var htmlID = renderingContext.Control.ClientID + "_" + menuItemIndex;
// Note: the output of diagnosticMetadataText is enclosed by single quotes, as it may contain double quotes.
diagnosticMetadataJson = string.Format(
"{{\"{0}\":\"{1}\", \"{2}\":\"{3}\", \"{4}\":\"{5}\", \"{6}\":\"{7}\", \"{8}\":'{9}'}}",
HtmlTextWriterAttribute.Id,
htmlID,
DiagnosticMetadataAttributes.TriggersNavigation,
diagnosticMetadataTriggersNavigation.ToString().ToLower(),
DiagnosticMetadataAttributes.TriggersPostBack,
diagnosticMetadataTriggersPostBack.ToString().ToLower(),
DiagnosticMetadataAttributes.ItemID,
menuItem.ItemID,
DiagnosticMetadataAttributes.Content,
HtmlUtility.StripHtmlTags(diagnosticMetadataText ?? ""));
}
bool isDisabled = !menuItem.EvaluateEnabled() || !isCommandEnabled;
stringBuilder.AppendFormat(
"\t\tnew DropDownMenu_ItemInfo ('{0}', '{1}', {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9})",
menuItemIndex,
menuItem.Category,
text,
icon,
disabledIcon,
(int)menuItem.RequiredSelection,
isDisabled ? "true" : "false",
href,
target,
diagnosticMetadataJson);
}
private void RegisterMenuItems(DropDownMenuRenderingContext renderingContext)
{
string key = renderingContext.Control.UniqueID;
if (renderingContext.Control.Enabled &&
!renderingContext.Control.Page.ClientScript.IsStartupScriptRegistered(typeof(DropDownMenuRenderer), key))
{
StringBuilder script = new StringBuilder();
script.Append("DropDownMenu_AddMenuInfo" + " (\r\n\t");
script.AppendFormat("new DropDownMenu_MenuInfo ('{0}', new Array (\r\n", renderingContext.Control.ClientID);
bool isFirstItem = true;
WebMenuItem[] menuItems;
if (renderingContext.Control.EnableGrouping)
{
menuItems = renderingContext.Control.MenuItems.GroupMenuItems(true);
}
else
{
menuItems = renderingContext.Control.MenuItems.ToArray();
}
string category = null;
bool isCategoryVisible = false;
for (int i = 0; i < menuItems.Length; i++)
{
WebMenuItem menuItem = menuItems[i];
if (renderingContext.Control.EnableGrouping && category != menuItem.Category)
{
category = menuItem.Category;
isCategoryVisible = false;
}
if (!menuItem.EvaluateVisible())
{
continue;
}
if (renderingContext.Control.EnableGrouping && menuItem.IsSeparator && !isCategoryVisible)
{
continue;
}
if (renderingContext.Control.EnableGrouping)
{
isCategoryVisible = true;
}
if (isFirstItem)
{
isFirstItem = false;
}
else
{
script.AppendFormat(",\r\n");
}
AppendMenuItem(renderingContext, script, menuItem, renderingContext.Control.MenuItems.IndexOf(menuItem));
}
script.Append(" )"); // Close Array
script.Append(" )"); // Close new MenuInfo
script.Append(" );"); // Close AddMenuInfo
renderingContext.Control.Page.ClientScript.RegisterStartupScriptBlock(
renderingContext.Control,
typeof(DropDownMenuRenderer),
key,
script.ToString());
}
}
private bool HasTitleIcon(DropDownMenuRenderingContext renderingContext)
{
return(renderingContext.Control.TitleIcon != null && !string.IsNullOrEmpty(renderingContext.Control.TitleIcon.Url));
}
private bool HasTitleText(DropDownMenuRenderingContext renderingContext)
{
return(!string.IsNullOrEmpty(renderingContext.Control.TitleText));
}
private bool HasDefaultTitle(DropDownMenuRenderingContext renderingContext)
{
return(HasTitleIcon(renderingContext) || HasTitleText(renderingContext));
}
private bool HasCustomTitle(DropDownMenuRenderingContext renderingContext)
{
return(renderingContext.Control.RenderHeadTitleMethod != null);
}
