Bug 674725 - Part AP - Implementation of cursor.continue() in the DOM code. r=smaug

dom/sms/interfaces/nsISmsDatabaseService.idl

@@ -45,7 +45,7 @@
 
 interface nsIDOMMozSmsFilter;
 
-[scriptable, function, uuid(33358749-d1b3-4bd6-835c-ef3869f0e966)]
+[scriptable, function, uuid(a253ec42-142e-490b-a479-1e9c605c0a58)]
 interface nsISmsDatabaseService : nsISupports
 {
   // Takes some information required to save the message and returns its id.
@@ -55,4 +55,5 @@ interface nsISmsDatabaseService : nsISupports
   void deleteMessage(in long messageId, in long requestId, [optional] in unsigned long long processId);
 
   void createMessageList(in nsIDOMMozSmsFilter filter, in boolean reverse, in long requestId, [optional] in unsigned long long processId);
+  void getNextMessageInList(in long listId, in long requestId, in unsigned long long processId);
 };

dom/sms/src/SmsCursor.cpp

@@ -41,6 +41,9 @@
 #include "nsIDOMSmsFilter.h"
 #include "nsIDOMSmsMessage.h"
 #include "nsIDOMSmsRequest.h"
+#include "SmsRequest.h"
+#include "SmsRequestManager.h"
+#include "nsISmsDatabaseService.h"
 
 DOMCI_DATA(MozSmsCursor, mozilla::dom::sms::SmsCursor)
 
@@ -60,12 +63,14 @@ NS_IMPL_CYCLE_COLLECTING_ADDREF(SmsCursor)
 NS_IMPL_CYCLE_COLLECTING_RELEASE(SmsCursor)
 
 SmsCursor::SmsCursor(nsIDOMMozSmsFilter* aFilter)
-  : mFilter(aFilter)
+  : mListId(-1)
+  , mFilter(aFilter)
 {
 }
 
-SmsCursor::SmsCursor(nsIDOMMozSmsFilter* aFilter, nsIDOMMozSmsRequest* aRequest)
-  : mFilter(aFilter)
+SmsCursor::SmsCursor(PRInt32 aListId, nsIDOMMozSmsFilter* aFilter, nsIDOMMozSmsRequest* aRequest)
+  : mListId(aListId)
+  , mFilter(aFilter)
   , mRequest(aRequest)
 {
 }
@@ -92,9 +97,16 @@ SmsCursor::Continue()
     return NS_ERROR_DOM_INVALID_STATE_ERR;
   }
 
-  // TODO: ask for the next message and reset the request
-  // TODO: add the associated request to the request manager
-  //       and send the id to the backend
+  mMessage = nsnull;
+  static_cast<SmsRequest*>(mRequest.get())->Reset();
+
+  PRInt32 requestId = SmsRequestManager::GetInstance()->AddRequest(mRequest);
+
+  nsCOMPtr<nsISmsDatabaseService> smsDBService =
+    do_GetService(SMS_DATABASE_SERVICE_CONTRACTID);
+  NS_ENSURE_TRUE(smsDBService, NS_ERROR_FAILURE);
+
+  smsDBService->GetNextMessageInList(mListId, requestId, 0);
 
   return NS_OK;
 }

dom/sms/src/SmsCursor.h

@@ -59,11 +59,12 @@ public:
   NS_DECL_CYCLE_COLLECTION_CLASS(SmsCursor)
 
   SmsCursor(nsIDOMMozSmsFilter* aFilter);
-  SmsCursor(nsIDOMMozSmsFilter* aFilter, nsIDOMMozSmsRequest* aRequest);
+  SmsCursor(PRInt32 aListId, nsIDOMMozSmsFilter* aFilter, nsIDOMMozSmsRequest* aRequest);
 
   void SetMessage(nsIDOMMozSmsMessage* aMessage);
 
 private:
+  PRInt32                       mListId;
   nsCOMPtr<nsIDOMMozSmsFilter>  mFilter;
   nsCOMPtr<nsIDOMMozSmsRequest> mRequest;
   nsCOMPtr<nsIDOMMozSmsMessage> mMessage;

dom/sms/src/SmsRequest.cpp

@@ -105,6 +105,21 @@ SmsRequest::~SmsRequest()
   }
 }
 
+void
+SmsRequest::Reset()
+{
+  NS_ASSERTION(mDone, "mDone should be true if we try to reset!");
+  NS_ASSERTION(mResult != JSVAL_VOID, "mResult should be set if we try to reset!");
+  NS_ASSERTION(mError == eNoError, "There should be no error if we try to reset!");
+
+  if (mResultRooted) {
+    UnrootResult();
+  }
+
+  mResult = JSVAL_VOID;
+  mDone = false;
+}
+
 void
 SmsRequest::RootResult()
 {

dom/sms/src/SmsRequest.h

@@ -75,6 +75,8 @@ public:
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(SmsRequest,
                                                          nsDOMEventTargetWrapperCache)
 
+  void Reset();
+
 private:
   SmsRequest() MOZ_DELETE;
 

dom/sms/src/SmsRequestManager.cpp

@@ -76,6 +76,26 @@ SmsRequestManager::GetInstance()
   return sInstance;
 }
 
+PRInt32
+SmsRequestManager::AddRequest(nsIDOMMozSmsRequest* aRequest)
+{
+  // TODO: merge with CreateRequest
+  PRInt32 size = mRequests.Count();
+
+  // Look for empty slots.
+  for (PRInt32 i=0; i<size; ++i) {
+    if (mRequests[i]) {
+      continue;
+    }
+
+    mRequests.ReplaceObjectAt(aRequest, i);
+    return i;
+  }
+
+  mRequests.AppendObject(aRequest);
+  return size;
+}
+
 PRInt32
 SmsRequestManager::CreateRequest(nsPIDOMWindow* aWindow,
                                  nsIScriptContext* aScriptContext,
@@ -204,7 +224,7 @@ SmsRequestManager::NotifyCreateMessageList(PRInt32 aRequestId, PRInt32 aListId,
   // TODO: use Filter!
   SmsRequest* request = GetRequest(aRequestId);
 
-  nsCOMPtr<SmsCursor> cursor = new SmsCursor(nsnull, request);
+  nsCOMPtr<SmsCursor> cursor = new SmsCursor(aListId, nsnull, request);
   cursor->SetMessage(aMessage);
 
   NotifySuccess<nsIDOMMozSmsCursor*>(aRequestId, cursor);

dom/sms/src/SmsRequestManager.h

@@ -62,6 +62,8 @@ public:
                         nsIScriptContext* aScriptContext,
                         nsIDOMMozSmsRequest** aRequest);
 
+  PRInt32 AddRequest(nsIDOMMozSmsRequest* aRequest);
+
   void NotifySmsSent(PRInt32 aRequestId, nsIDOMMozSmsMessage* aMessage);
   void NotifySmsSendFailed(PRInt32 aRequestId, SmsRequest::ErrorType aError);
   void NotifyGotSms(PRInt32 aRequestId, nsIDOMMozSmsMessage* aMessage);

dom/sms/src/android/SmsDatabaseService.cpp

@@ -99,6 +99,14 @@ SmsDatabaseService::CreateMessageList(nsIDOMMozSmsFilter* aFilter,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+SmsDatabaseService::GetNextMessageInList(PRInt32 aListId, PRInt32 aRequestId,
+                                         PRUint64 aProcessId)
+{
+  // TODO: implement
+  return NS_OK;
+}
+
 } // namespace sms
 } // namespace dom
 } // namespace mozilla

dom/sms/src/fallback/SmsDatabaseService.cpp

@@ -78,6 +78,14 @@ SmsDatabaseService::CreateMessageList(nsIDOMMozSmsFilter* aFilter,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+SmsDatabaseService::GetNextMessageInList(PRInt32 aListId, PRInt32 aRequestId,
+                                         PRUint64 aProcessId)
+{
+  NS_ERROR("We should not be here!");
+  return NS_OK;
+}
+
 } // namespace sms
 } // namespace dom
 } // namespace mozilla

dom/sms/src/ipc/PSms.ipdl

@@ -113,6 +113,8 @@ parent:
 
     CreateMessageList(SmsFilterData aFilter, bool aReverse, PRInt32 aRequestId, PRUint64 aProcessId);
 
+    GetNextMessageInList(PRInt32 aListId, PRInt32 aRequestId, PRUint64 aProcessId);
+
     __delete__();
 };
 

dom/sms/src/ipc/SmsIPCService.cpp

@@ -147,6 +147,15 @@ SmsIPCService::CreateMessageList(nsIDOMMozSmsFilter* aFilter, bool aReverse,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+SmsIPCService::GetNextMessageInList(PRInt32 aListId, PRInt32 aRequestId,
+                                    PRUint64 aProcessId)
+{
+  GetSmsChild()->SendGetNextMessageInList(aListId, aRequestId,
+                                          ContentChild::GetSingleton()->GetID());
+  return NS_OK;
+}
+
 } // namespace sms
 } // namespace dom
 } // namespace mozilla

dom/sms/src/ipc/SmsParent.cpp

@@ -233,6 +233,20 @@ SmsParent::RecvCreateMessageList(const SmsFilterData& aFilter,
   return true;
 }
 
+bool
+SmsParent::RecvGetNextMessageInList(const PRInt32& aListId,
+                                    const PRInt32& aRequestId,
+                                    const PRUint64& aProcessId)
+{
+  nsCOMPtr<nsISmsDatabaseService> smsDBService =
+    do_GetService(SMS_DATABASE_SERVICE_CONTRACTID);
+  NS_ENSURE_TRUE(smsDBService, true);
+
+  smsDBService->GetNextMessageInList(aListId, aRequestId, aProcessId);
+
+  return true;
+}
+
 } // namespace sms
 } // namespace dom
 } // namespace mozilla

dom/sms/src/ipc/SmsParent.h

@@ -63,6 +63,7 @@ public:
   NS_OVERRIDE virtual bool RecvGetMessage(const PRInt32& aMessageId, const PRInt32& aRequestId, const PRUint64& aProcessId);
   NS_OVERRIDE virtual bool RecvDeleteMessage(const PRInt32& aMessageId, const PRInt32& aRequestId, const PRUint64& aProcessId);
   NS_OVERRIDE virtual bool RecvCreateMessageList(const SmsFilterData& aFilter, const bool& aReverse, const PRInt32& aRequestId, const PRUint64& aProcessId);
+  NS_OVERRIDE virtual bool RecvGetNextMessageInList(const PRInt32& aListId, const PRInt32& aRequestId, const PRUint64& aProcessId);
 
 protected:
   virtual void ActorDestroy(ActorDestroyReason why);