/// <summary>
/// 访问并呈现当前标签实例。
/// </summary>
/// <param name="context">当前HTML标签上下文，包含当前HTML相关信息。</param>
/// <param name="output">当前标签输出实例，用于呈现标签相关信息。</param>
public override void Process(TagHelperContext context, TagHelperOutput output)
{
var type = _typeManager.Find(TypeId);
if (type == null)
{
output.SuppressOutput();
return;
}
var builder = new TagBuilder("div");
if (!string.IsNullOrEmpty(type.IconUrl))
{
if (type.IconUrl.IndexOf('.') == -1)
{
output.TagName = "i";
builder.AddCssClass(type.IconUrl);
}
else
{
output.TagName = "img";
builder.MergeAttribute("src", type.IconUrl);
}
}
else
{
builder.InnerHtml.AppendHtml(type.Name);
}
string style = null;
if (!string.IsNullOrEmpty(type.BgColor))
{
style += $"background-color:{type.BgColor};";
}
if (!string.IsNullOrEmpty(type.Color))
{
style += $"color:{type.Color};";
}
if (style != null)
{
builder.MergeAttribute("style", style);
}
output.MergeAttributes(builder);
}
private void Init(string eventType, EventMessage message)
{
if (string.IsNullOrEmpty(message.Message))
{
throw new ArgumentNullException(nameof(message.Message), Resources.EventMessage_NullMessage);
}
if (message.EventId == 0)
{
var type = _eventTypeManager.Find(x => x.Name.Equals(eventType, StringComparison.OrdinalIgnoreCase));
if (type == null)
{
type = new EventType {
Name = eventType
};
_eventTypeManager.Save(type);
}
message.EventId = type.Id;
}
var httpContext = _httpContextAccessor.HttpContext;
if (string.IsNullOrEmpty(message.IPAdress))
{
message.IPAdress = httpContext.GetUserAddress();
}
if (message.UserId == 0)
{
var userId = httpContext.User.GetUserId();
if (userId == 0)
{
throw new ArgumentNullException(nameof(message.UserId), Resources.EventMessage_NullUserId);
}
message.UserId = userId;
}
}
/// <summary> /// 获取事件类型。 /// </summary> /// <param name="id">事件类型Id。</param> /// <returns>返回事件类型名称。</returns> public string GetEventType(int id) => _eventTypeManager.Find(id)?.Name;