mcs/class/Mainsoft.Web/Mainsoft.Web.Hosting/ServletFacesViewHandler.cs

   1 using System;\r
   2 using System.Collections.Generic;\r
   3 using System.Text;\r
   4 using javax.faces.application;\r
   5 using javax.servlet.http;\r
   6 using java.util;\r
   7 using javax.faces.context;\r
   8 using javax.faces.component;\r
   9 using java.lang;\r
  10 using javax.faces.render;\r
  11 \r
  12 namespace Mainsoft.Web.Hosting\r
  13 {\r
  14         public class ServletFacesViewHandler : ViewHandler\r
  15         {\r
  16                 public static readonly String FORM_STATE_MARKER = "<!--@@JSF_FORM_STATE_MARKER@@-->";\r
  17                 public static readonly int FORM_STATE_MARKER_LEN = FORM_STATE_MARKER.Length;\r
  18 \r
  19                 public override Locale calculateLocale (FacesContext facesContext) {\r
  20                         Iterator locales = facesContext.getExternalContext ().getRequestLocales ();\r
  21                         while (locales.hasNext ()) {\r
  22                                 Locale locale = (Locale) locales.next ();\r
  23                                 for (Iterator it = facesContext.getApplication ().getSupportedLocales (); it.hasNext (); ) {\r
  24                                         Locale supportLocale = (Locale) it.next ();\r
  25                                         // higher priority to a language match over an exact match\r
  26                                         // that occures further down (see Jstl Reference 1.0 8.3.1)\r
  27                                         if (locale.getLanguage ().Equals (supportLocale.getLanguage ()) &&\r
  28                                                 (supportLocale.getCountry () == null ||\r
  29                                                         supportLocale.getCountry ().Length == 0)) {\r
  30                                                 return supportLocale;\r
  31                                         }\r
  32                                         else if (supportLocale.Equals (locale)) {\r
  33                                                 return supportLocale;\r
  34                                         }\r
  35                                 }\r
  36                         }\r
  37 \r
  38                         Locale defaultLocale = facesContext.getApplication ().getDefaultLocale ();\r
  39                         return defaultLocale != null ? defaultLocale : Locale.getDefault ();\r
  40                 }\r
  41 \r
  42                 public override String calculateRenderKitId (FacesContext facesContext) {\r
  43                         String renderKitId = facesContext.getApplication ().getDefaultRenderKitId ();\r
  44                         return (renderKitId != null) ? renderKitId : RenderKitFactory.HTML_BASIC_RENDER_KIT;\r
  45                         //TODO: how to calculate from client?\r
  46                 }\r
  47 \r
  48                 /**\r
  49                  */\r
  50                 public override UIViewRoot createView (FacesContext facesContext, String viewId) {\r
  51                         Application application = facesContext.getApplication ();\r
  52                         ViewHandler applicationViewHandler = application.getViewHandler ();\r
  53 \r
  54                         Locale currentLocale = null;\r
  55                         String currentRenderKitId = null;\r
  56                         UIViewRoot uiViewRoot = facesContext.getViewRoot ();\r
  57                         if (uiViewRoot != null) {\r
  58                                 //Remember current locale and renderKitId\r
  59                                 currentLocale = uiViewRoot.getLocale ();\r
  60                                 currentRenderKitId = uiViewRoot.getRenderKitId ();\r
  61                         }\r
  62 \r
  63                         uiViewRoot = (UIViewRoot) application.createComponent (UIViewRoot.COMPONENT_TYPE);\r
  64                         //      as of JSF spec page 7-16:\r
  65                         //      "It is the callers responsibility to ensure that setViewId() is called\r
  66                         //      on the returned view, passing the same viewId value."\r
  67                         //      so we do not set the viewId here\r
  68 \r
  69                         //      ok, but the RI does so, so let's do it, too.\r
  70                         uiViewRoot.setViewId (viewId);\r
  71 \r
  72                         if (currentLocale != null) {\r
  73                                 //set old locale\r
  74                                 uiViewRoot.setLocale (currentLocale);\r
  75                         }\r
  76                         else {\r
  77                                 //calculate locale\r
  78                                 uiViewRoot.setLocale (applicationViewHandler.calculateLocale (facesContext));\r
  79                         }\r
  80 \r
  81                         if (currentRenderKitId != null) {\r
  82                                 //set old renderKit\r
  83                                 uiViewRoot.setRenderKitId (currentRenderKitId);\r
  84                         }\r
  85                         else {\r
  86                                 //calculate renderKit\r
  87                                 uiViewRoot.setRenderKitId (applicationViewHandler.calculateRenderKitId (facesContext));\r
  88                         }\r
  89 \r
  90                         return uiViewRoot;\r
  91                 }\r
  92 \r
  93                 public override String getActionURL (FacesContext facesContext, String viewId) {\r
  94 \r
  95                         //if (PortletUtil.isRenderResponse (facesContext)) {\r
  96                         //    RenderResponse response = (RenderResponse) facesContext.getExternalContext ().getResponse ();\r
  97                         //    PortletURL url = response.createActionURL ();\r
  98                         //    url.setParameter (MyFacesGenericPortlet.VIEW_ID, viewId);\r
  99                         //    return url.toString ();\r
 100                         //}\r
 101 \r
 102                         String path = viewId;//                 getViewIdPath (facesContext, viewId);\r
 103                         if (path.Length > 0 && path [0] == '/') {\r
 104                                 return facesContext.getExternalContext ().getRequestContextPath () + path;\r
 105                         }\r
 106                         else {\r
 107                                 return path;\r
 108                         }\r
 109                 }\r
 110 \r
 111                 public override String getResourceURL (FacesContext facesContext, String path) {\r
 112                         if (path.Length > 0 && path [0] == '/') {\r
 113                                 return facesContext.getExternalContext ().getRequestContextPath () + path;\r
 114                         }\r
 115                         else {\r
 116                                 return path;\r
 117                         }\r
 118                 }\r
 119 \r
 120                 public override void renderView (FacesContext facesContext, UIViewRoot viewToRender) {\r
 121                         if (viewToRender == null) {\r
 122                                 throw new ArgumentNullException ("viewToRender", "viewToRender must not be null");\r
 123                         }\r
 124 \r
 125                         AspNetFacesContext aspNetFacesContext = (AspNetFacesContext) facesContext;\r
 126                         UIComponent page = aspNetFacesContext.Handler as UIComponent;\r
 127                         if (page == null)\r
 128                                 return;\r
 129 \r
 130                         if (viewToRender.getChildCount () == 0) {\r
 131                                 // GET\r
 132                                 // ensure uiViewRoot contains the page\r
 133                                 viewToRender.getChildren ().add (0, page);\r
 134                                 // process GET request\r
 135                                 aspNetFacesContext.Handler.ProcessRequest (aspNetFacesContext.Context);\r
 136                         }\r
 137                         else\r
 138                                 page.encodeChildren (facesContext);\r
 139                 }\r
 140 \r
 141 \r
 142                 public override UIViewRoot restoreView (FacesContext facesContext, String viewId) {\r
 143                         Application application = facesContext.getApplication ();\r
 144                         ViewHandler applicationViewHandler = application.getViewHandler ();\r
 145                         String renderKitId = applicationViewHandler.calculateRenderKitId (facesContext);\r
 146                         UIViewRoot viewRoot = application.getStateManager ().restoreView (facesContext,\r
 147                                                                                                                                                         viewId,\r
 148                                                                                                                                                         renderKitId);\r
 149                         return viewRoot;\r
 150                 }\r
 151 \r
 152                 /**\r
 153                  * Writes a state marker that is replaced later by one or more hidden form\r
 154                  * inputs.\r
 155                  *\r
 156                  * @param facesContext\r
 157                  * @throws IOException\r
 158                  */\r
 159                 public override void writeState (FacesContext facesContext) {\r
 160                         facesContext.getResponseWriter ().write (FORM_STATE_MARKER);\r
 161                 }\r
 162 \r
 163         }\r
 164 }\r