[FEATURE] Future design of the PlantUML Server

A new map feature to retrieve the image map of a diagram is added

src/main/java/net/sourceforge/plantuml/servlet/diagrams.txt

@@ -0,0 +1,36 @@
+## Class diagram ##
+###################
+
+@startuml
+hide empty members
+hide empty methods
+hide empty fields
+abstract class UmlDiagramService {
+  public void doGet(HttpServletRequest rq, HttpServletResponse rsp)
+  abstract public ResponseSender getSender()
+  abstract public String getSource( String uri)
+  abstract public FileFormat getOutputFormat()
+}
+interface ResponseSender {
+  ResponseSender( HttpServletResponse r, FileFormat f)
+  void sendDiagram( String uml, int n)
+}
+abstract HttpServlet <|-- UmlDiagramService
+abstract HttpServlet <|-- ProxyServlet
+UmlDiagramService <|-- PngServlet
+UmlDiagramService <|-- SvgServlet
+UmlDiagramService <|-- AsciiServlet
+UmlDiagramService <|-- MapServlet
+UmlDiagramService o- ResponseSender
+ResponseSender <|-- DiagramResponse
+ResponseSender <|-- MapResponse
+ResponseSender <|-- ProxyResponse
+ProxyResponse -o ProxyServlet
+@enduml
+
+## Sequence diagram ##
+######################
+
+@startuml
+TODO
+@enduml

src/main/java/net/sourceforge/plantuml/servlet/package.html

@@ -6,7 +6,7 @@
 - Service servlets : ImgServlet, SvgServlet, AsciiServlet, ProxyServlet that only produce a diagram as output.<br>
 <br>
 Structure of the service part of the PlantUmlServer: <br>
-<img src="http://www.plantuml.com/plantuml/img/XP11JiCm44NtFiKiKwcv0HiaLDY1Y3Y0uqoJaUpO7OyZAk3kr2I4f0MwzDFJ_z_JKOE0BiWH7BeQEQfkYQJppGhj2Us9w3eAQoDWh8uHNfoz8zsoTXNoG0RXJG64L5ioC7XgeF7tACM3ICY6HNd6Gy8em8Sjh70Cley87CFcb34NJM6LCFKjj2YLJsom-2Q9QUNloEBEizEIvSSa8SduBZRgGusxfz5pQLvznehVrssN1VlS_FNDY7qp1VmiSpOtpiiMUN3pNfQNr_l7VMB_Ufo8kZpxwFJj5QCQhXctqH3zxVZo_4wV" />
+<img src="http://www.plantuml.com/plantuml/img/XP5DReGm38NtdC9BAi4DkgbKJRkfMXNr004CH4f8nZ6eexPtR_WjC7JOaUVFVlQZaZa2QiiNqAXJ91TKIuahaw-aGgBoYaWTayWOCYMSWm-j7gKeIUW4gPKPmbS0O9jKoGnQ8tF8pHDo-CniEq8Xl-EvGST0vmXMihEcTWZax9sVCHkDmwPwWdME12Noy1NkmGcJhCiUCWrb64vAGtAFFqc59qDQSDVpsh1jU7ZxyJ-1h1cf4FwwpHRTiMiftByfMbeKtGfzECxtZFdzhQXL1DuHwivwtdGn5kw_u_Ww-Xli6vdFowW4r_ziOEhoW4ZQ8-B1PL8UC2_2_a-OU9Ddi4cy7p4sJQLTnjlShFUHpCJg1R5P9VOB" />
 </p>
 </body>
 </html>