| |
| using System; |
| using System.Net; |
| using System.Text; |
| using System.Windows.Forms; |
| |
| namespace RemoteView.PageHandlers |
| { |
| /// <summary> |
| /// base class for all the request handlers |
| /// </summary> |
| abstract class AbstractPageHandler |
| { |
| /// <summary> |
| /// |
| /// </summary> |
| /// <param name="response">response to be sent to client</param> |
| /// <param name="uri">tokenized request URI</param> |
| /// <returns>response body</returns> |
| public abstract byte[] HandleRequest(HttpListenerResponse response, String[] uri); |
| |
| /// <summary> |
| /// Parse from tokenized URI the selected Screen Device. |
| /// Default to 0 if parameter not present or error |
| /// </summary> |
| /// <param name="uri">tokenized URI</param> |
| /// <param name="screens">system screens</param> |
| /// <returns>selected screen or default(0)</returns> |
| internal int GetRequestedScreenDevice(String[] uri, Screen[] screens) |
| { |
| int screen = 0; |
| if (uri.Length > 2) |
| { |
| try |
| { |
| screen = Convert.ToInt16(uri[2]); |
| } |
| catch { } |
| |
| if (screen < 0 || screen >= screens.Length) |
| { |
| screen = 0; |
| } |
| } |
| return screen; |
| } |
| |
| /// <summary> |
| /// boilerplate HTML wraping for all the response streams |
| /// </summary> |
| /// <param name="content"></param> |
| /// <returns></returns> |
| internal byte[] BuildHTML(string content) |
| { |
| return Encoding.UTF8.GetBytes("<!doctype html>" + Environment.NewLine + |
| "<head><title>Remote View</title></head>" + Environment.NewLine + |
| "<body>" + Environment.NewLine + |
| content + |
| "</body>" + Environment.NewLine + |
| "</html>" + Environment.NewLine); |
| } |
| } |
| } |