Making SSR using preferences instead of an explict api.

minimo/components/ssr/Makefile.in

@@ -63,7 +63,6 @@ REQUIRES	= \
 		  $(NULL)
 
 CPPSRCS   = nsSSRSupport.cpp
-XPIDLSRCS = nsISSRSupport.idl
 
 EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_LIBS)
 

minimo/components/ssr/nsSSRSupport.cpp

@@ -40,25 +40,30 @@
 #include "nsCOMPtr.h"
 #include "nsIServiceManager.h"
 #include "nsIGenericFactory.h"
+#include "nsIObserver.h"
+#include "nsIPrefService.h"
+#include "nsIPrefBranch2.h"
+#include "nsICategoryManager.h"
 
 #include "string.h"
 #include "nsNetUtil.h"
 
-#include "nsISSRSupport.h"
 #include "nsIStyleSheetService.h"
 
 
-// TODO make the SSR persistent.
-//      auto reload SSR in C.
+// TODO auto reload SSR in C.
 
-class nsSSRSupport : public nsISSRSupport
+class nsSSRSupport : public nsIObserver
 {
 public:  
   nsSSRSupport();  
   virtual ~nsSSRSupport();  
   
   NS_DECL_ISUPPORTS
-  NS_DECL_NSISSRSUPPORT
+  NS_DECL_NSIOBSERVER
+
+  nsresult SetSSREnabled(PRBool aSsrEnabled);
+  nsresult SetSiteSSREnabled(PRBool aSiteSSREnabled);
 
   nsCOMPtr<nsIStyleSheetService> m_sss;
 
@@ -76,16 +81,9 @@ nsSSRSupport::~nsSSRSupport()
 {
 }
 
-NS_IMPL_ISUPPORTS1(nsSSRSupport, nsISSRSupport)
+NS_IMPL_ISUPPORTS1(nsSSRSupport, nsIObserver)
 
-NS_IMETHODIMP 
-nsSSRSupport::GetSSREnabled(PRBool *aSsrEnabled)
-{
-  *aSsrEnabled = mUsingSSR;
-  return NS_OK;
-}
-
-NS_IMETHODIMP 
+nsresult
 nsSSRSupport::SetSSREnabled(PRBool aSsrEnabled)
 {
   if (!m_sss)
@@ -102,14 +100,8 @@ nsSSRSupport::SetSSREnabled(PRBool aSsrEnabled)
   return m_sss->UnregisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);
 }
 
-NS_IMETHODIMP
-nsSSRSupport::GetSiteSSREnabled(PRBool *aSiteSSREnabled)
-{
-  *aSiteSSREnabled = mUsingSiteSSR;
-  return NS_OK;
-}
-
-NS_IMETHODIMP nsSSRSupport::SetSiteSSREnabled(PRBool aSiteSSREnabled)
+nsresult
+nsSSRSupport::SetSiteSSREnabled(PRBool aSiteSSREnabled)
 {
   if (!m_sss)
     return NS_ERROR_NOT_INITIALIZED;
@@ -125,6 +117,49 @@ NS_IMETHODIMP nsSSRSupport::SetSiteSSREnabled(PRBool aSiteSSREnabled)
   return m_sss->UnregisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);
 }
 
+NS_IMETHODIMP
+nsSSRSupport::Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *aData)
+{
+  nsresult rv;
+  
+  if (!strcmp(aTopic,"xpcom-startup")) 
+  {
+    nsCOMPtr<nsIPrefBranch2> prefBranch = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    
+    prefBranch->AddObserver("ssr.", this, PR_FALSE);
+
+    return NS_OK;
+  }
+ 
+  if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) 
+  {
+    nsCOMPtr<nsIPrefBranch> prefBranch = do_QueryInterface(aSubject);
+    nsXPIDLCString cstr;
+    
+    const char* pref = NS_ConvertUCS2toUTF8(aData).get();
+    
+    if (!strcmp(pref, "ssr.enabled"))
+    {
+      PRBool enabled;
+      prefBranch->GetIntPref(pref, &enabled);
+
+      SetSSREnabled(enabled);
+      return NS_OK;
+    }
+
+    if (!strcmp(pref, "ssr.site.enabled"))
+    {
+      PRBool enabled;
+      prefBranch->GetIntPref(pref, &enabled);
+
+      SetSiteSSREnabled(enabled);
+      return NS_OK;
+    }
+  }
+  return NS_OK;
+}
+
 
 //------------------------------------------------------------------------------
 //  XPCOM REGISTRATION BELOW
@@ -139,12 +174,74 @@ NS_IMETHODIMP nsSSRSupport::SetSiteSSREnabled(PRBool aSiteSSREnabled)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsSSRSupport)
 
 
+static NS_METHOD SSRRegistration(nsIComponentManager *aCompMgr,
+                                 nsIFile *aPath,
+                                 const char *registryLocation,
+                                 const char *componentType,
+                                 const nsModuleComponentInfo *info)
+{
+  nsresult rv;
+  
+  nsCOMPtr<nsIServiceManager> servman = do_QueryInterface((nsISupports*)aCompMgr, &rv);
+  if (NS_FAILED(rv))
+    return rv;
+  
+  
+  nsCOMPtr<nsICategoryManager> catman;
+  servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID, 
+                                  NS_GET_IID(nsICategoryManager), 
+                                  getter_AddRefs(catman));
+  
+  if (NS_FAILED(rv))
+    return rv;
+  
+  char* previous = nsnull;
+  rv = catman->AddCategoryEntry("xpcom-startup",
+                                "SSR", 
+                                SSRSupport_ContractID,
+                                PR_TRUE, 
+                                PR_TRUE, 
+                                &previous);
+  if (previous)
+    nsMemory::Free(previous);
+  
+  return rv;
+}
+
+static NS_METHOD SSRUnregistration(nsIComponentManager *aCompMgr,
+                                   nsIFile *aPath,
+                                   const char *registryLocation,
+                                   const nsModuleComponentInfo *info)
+{
+  nsresult rv;
+  
+  nsCOMPtr<nsIServiceManager> servman = do_QueryInterface((nsISupports*)aCompMgr, &rv);
+  if (NS_FAILED(rv))
+    return rv;
+  
+  nsCOMPtr<nsICategoryManager> catman;
+  servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID, 
+                                  NS_GET_IID(nsICategoryManager), 
+                                  getter_AddRefs(catman));
+  
+  if (NS_FAILED(rv))
+    return rv;
+  
+  rv = catman->DeleteCategoryEntry("xpcom-startup",
+                                   "SSR", 
+                                   PR_TRUE);
+  
+  return rv;
+}
+
 static const nsModuleComponentInfo components[] =
 {
   { "SoftKeyBoardService", 
     SSRSupport_CID, 
     SSRSupport_ContractID,
     nsSSRSupportConstructor,
+    SSRRegistration,
+    SSRUnregistration
   }
   
 };