properly detect when profile list hasn't loaded yet

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / model / Data.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/model/Data.java b/app/src/main/java/net/ktnx/mobileledger/model/Data.java
index 5e08297e3752ca9e0576c9e6e9fd0aa6a75332dd..7687d237f2279da693d04d27a2448b0e02139b8d 100644 (file)
--- a/app/src/main/java/net/ktnx/mobileledger/model/Data.java
+++ b/app/src/main/java/net/ktnx/mobileledger/model/Data.java
@@ -19,7 +19,11 @@ package net.ktnx.mobileledger.model;
 
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;

+import android.os.AsyncTask;

 
 

+import net.ktnx.mobileledger.App;
+import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
+import net.ktnx.mobileledger.ui.activity.MainActivity;

 import net.ktnx.mobileledger.utils.LockHolder;
 import net.ktnx.mobileledger.utils.Locker;
 import net.ktnx.mobileledger.utils.Logger;
 import net.ktnx.mobileledger.utils.LockHolder;
 import net.ktnx.mobileledger.utils.Locker;
 import net.ktnx.mobileledger.utils.Logger;


@@ -27,8 +31,10 @@ import net.ktnx.mobileledger.utils.MLDB;
 import net.ktnx.mobileledger.utils.ObservableList;
 import net.ktnx.mobileledger.utils.ObservableValue;
 
 import net.ktnx.mobileledger.utils.ObservableList;
 import net.ktnx.mobileledger.utils.ObservableValue;
 

+import java.lang.ref.WeakReference;

 import java.util.ArrayList;
 import java.util.Date;
 import java.util.ArrayList;
 import java.util.Date;

+import java.util.List;

 import java.util.Locale;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import java.util.Locale;
 import java.util.concurrent.atomic.AtomicInteger;
 


@@ -44,11 +50,12 @@ public final class Data {
     public static MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
     public static MutableLiveData<MobileLedgerProfile> profile = new MutableLiveData<>();
     public static MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
     public static MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
     public static MutableLiveData<MobileLedgerProfile> profile = new MutableLiveData<>();
     public static MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =

-            new MutableLiveData<>(new ArrayList<>());
+            new MutableLiveData<>(null);

     public static ObservableValue<Boolean> optShowOnlyStarred = new ObservableValue<>();
     public static MutableLiveData<String> accountFilter = new MutableLiveData<>();
     private static AtomicInteger backgroundTaskCount = new AtomicInteger(0);
     private static Locker profilesLocker = new Locker();
     public static ObservableValue<Boolean> optShowOnlyStarred = new ObservableValue<>();
     public static MutableLiveData<String> accountFilter = new MutableLiveData<>();
     private static AtomicInteger backgroundTaskCount = new AtomicInteger(0);
     private static Locker profilesLocker = new Locker();

+    private static RetrieveTransactionsTask retrieveTransactionsTask;

     public static void backgroundTaskStarted() {
         int cnt = backgroundTaskCount.incrementAndGet();
         debug("data",
     public static void backgroundTaskStarted() {
         int cnt = backgroundTaskCount.incrementAndGet();
         debug("data",


@@ -65,6 +72,7 @@ public final class Data {
     }
     public static void setCurrentProfile(MobileLedgerProfile newProfile) {
         MLDB.setOption(MLDB.OPT_PROFILE_UUID, newProfile.getUuid());
     }
     public static void setCurrentProfile(MobileLedgerProfile newProfile) {
         MLDB.setOption(MLDB.OPT_PROFILE_UUID, newProfile.getUuid());

+        stopTransactionsRetrieval();

         profile.postValue(newProfile);
     }
     public static int getProfileIndex(MobileLedgerProfile profile) {
         profile.postValue(newProfile);
     }
     public static int getProfileIndex(MobileLedgerProfile profile) {


@@ -96,7 +104,7 @@ public final class Data {
         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
         if (profileUUID == null) return -1;
 
         String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
         if (profileUUID == null) return -1;
 

-        SQLiteDatabase db = MLDB.getDatabase();
+        SQLiteDatabase db = App.getDatabase();

         try (Cursor c = db
                 .rawQuery("SELECT theme from profiles where uuid=?", new String[]{profileUUID}))
         {
         try (Cursor c = db
                 .rawQuery("SELECT theme from profiles where uuid=?", new String[]{profileUUID}))
         {


@@ -109,8 +117,7 @@ public final class Data {
         MobileLedgerProfile profile;
         try (LockHolder readLock = profilesLocker.lockForReading()) {
             List<MobileLedgerProfile> prList = profiles.getValue();
         MobileLedgerProfile profile;
         try (LockHolder readLock = profilesLocker.lockForReading()) {
             List<MobileLedgerProfile> prList = profiles.getValue();

-            assert prList != null;
-            if (prList.isEmpty()) {
+            if ((prList == null) || prList.isEmpty()) {

                 readLock.close();
                 try (LockHolder ignored = profilesLocker.lockForWriting()) {
                     profile = MobileLedgerProfile.loadAllFromDB(profileUUID);
                 readLock.close();
                 try (LockHolder ignored = profilesLocker.lockForWriting()) {
                     profile = MobileLedgerProfile.loadAllFromDB(profileUUID);


@@ -124,4 +131,21 @@ public final class Data {
         }
         return profile;
     }
         }
         return profile;
     }

+    public synchronized static void scheduleTransactionListRetrieval(MainActivity activity) {
+        if (retrieveTransactionsTask != null) {
+            Logger.debug("db", "Ignoring request for transaction retrieval - already active");
+            return;
+        }
+        retrieveTransactionsTask =
+                new RetrieveTransactionsTask(new WeakReference<>(activity), profile.getValue());
+        Logger.debug("db", "Created a background transaction retrieval task");
+
+        retrieveTransactionsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    }
+    public static synchronized void stopTransactionsRetrieval() {
+        if (retrieveTransactionsTask != null) retrieveTransactionsTask.cancel(false);
+    }
+    public static void transactionRetrievalDone() {
+        retrieveTransactionsTask = null;
+    }

 }
 }