rework background progress to use MutableLiveData and observers

[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 2289635d7524551b941294f8d7a096ab8212621a..a278a1b6318cd361143cf5d9ae7ef5c5c1b3ead6 100644 (file)
--- a/app/src/main/java/net/ktnx/mobileledger/model/Data.java
+++ b/app/src/main/java/net/ktnx/mobileledger/model/Data.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2019 Damyan Ivanov.
+ * Copyright © 2020 Damyan Ivanov.
  * This file is part of MoLe.
  * MoLe is free software: you can distribute it and/or modify it
  * under the term of the GNU General Public License as published by
@@ -21,7 +21,11 @@ import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.os.AsyncTask;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.LifecycleOwner;
 import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.Observer;
 
 import net.ktnx.mobileledger.App;
 import net.ktnx.mobileledger.async.RetrieveTransactionsTask;
@@ -31,6 +35,7 @@ import net.ktnx.mobileledger.utils.Locker;
 import net.ktnx.mobileledger.utils.Logger;
 import net.ktnx.mobileledger.utils.MLDB;
 import net.ktnx.mobileledger.utils.ObservableList;
+import net.ktnx.mobileledger.utils.SimpleDate;
 
 import java.lang.ref.WeakReference;
 import java.text.NumberFormat;
@@ -38,28 +43,41 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 import java.util.Locale;
+import java.util.Objects;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import static net.ktnx.mobileledger.utils.Logger.debug;
 
 public final class Data {
-    public static ObservableList<TransactionListItem> transactions =
+    public static final ObservableList<TransactionListItem> transactions =
             new ObservableList<>(new ArrayList<>());
-    public static ObservableList<LedgerAccount> accounts = new ObservableList<>(new ArrayList<>());
-    public static MutableLiveData<Boolean> backgroundTasksRunning = new MutableLiveData<>(false);
-    public static MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
-    public static MutableLiveData<MobileLedgerProfile> profile = new InertMutableLiveData<>();
-    public static MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
+    public static final MutableLiveData<SimpleDate> earliestTransactionDate =
             new MutableLiveData<>(null);
-    public static MutableLiveData<String> accountFilter = new MutableLiveData<>();
-    public static MutableLiveData<Currency.Position> currencySymbolPosition =
+    public static final MutableLiveData<SimpleDate> latestTransactionDate =
+            new MutableLiveData<>(null);
+    public static final MutableLiveData<Boolean> backgroundTasksRunning =
+            new MutableLiveData<>(false);
+    public static final MutableLiveData<RetrieveTransactionsTask.Progress> backgroundTaskProgress =
+            new MutableLiveData<>();
+    public static final MutableLiveData<Date> lastUpdateDate = new MutableLiveData<>();
+    public static final MutableLiveData<ArrayList<MobileLedgerProfile>> profiles =
+            new MutableLiveData<>(null);
+    public static final MutableLiveData<String> accountFilter = new MutableLiveData<>();
+    public static final MutableLiveData<Currency.Position> currencySymbolPosition =
             new MutableLiveData<>();
-    public static MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
-    public static MutableLiveData<Locale> locale = new MutableLiveData<>(Locale.getDefault());
-    private static AtomicInteger backgroundTaskCount = new AtomicInteger(0);
-    private static Locker profilesLocker = new Locker();
+    public static final MutableLiveData<Boolean> currencyGap = new MutableLiveData<>(true);
+    public static final MutableLiveData<Locale> locale = new MutableLiveData<>(Locale.getDefault());
+    public static final MutableLiveData<Boolean> drawerOpen = new MutableLiveData<>(false);
+    private static final MutableLiveData<MobileLedgerProfile> profile =
+            new InertMutableLiveData<>();
+    private static final AtomicInteger backgroundTaskCount = new AtomicInteger(0);
+    private static final Locker profilesLocker = new Locker();
+    public static MutableLiveData<Integer> foundTransactionItemIndex = new MutableLiveData<>(null);
     private static RetrieveTransactionsTask retrieveTransactionsTask;
-    public static MutableLiveData<Boolean> drawerOpen = new MutableLiveData<>(false);
+    @NonNull
+    public static MobileLedgerProfile getProfile() {
+        return Objects.requireNonNull(profile.getValue());
+    }
     public static void backgroundTaskStarted() {
         int cnt = backgroundTaskCount.incrementAndGet();
         debug("data",
@@ -74,8 +92,8 @@ public final class Data {
                         cnt));
         backgroundTasksRunning.postValue(cnt > 0);
     }
-    public static void setCurrentProfile(MobileLedgerProfile newProfile) {
-        MLDB.setOption(MLDB.OPT_PROFILE_UUID, (newProfile == null) ? null : newProfile.getUuid());
+    public static void setCurrentProfile(@NonNull MobileLedgerProfile newProfile) {
+        MLDB.setOption(MLDB.OPT_PROFILE_UUID, newProfile.getUuid());
         stopTransactionsRetrieval();
         profile.setValue(newProfile);
     }
@@ -124,6 +142,7 @@ public final class Data {
 
         return -1;
     }
+    @Nullable
     public static MobileLedgerProfile getProfile(String profileUUID) {
         MobileLedgerProfile profile;
         try (LockHolder readLock = profilesLocker.lockForReading()) {
@@ -195,4 +214,23 @@ public final class Data {
             currencySymbolPosition.setValue(Currency.Position.none);
     }
 
+    public static void observeProfile(LifecycleOwner lifecycleOwner,
+                                      Observer<MobileLedgerProfile> observer) {
+        profile.observe(lifecycleOwner, observer);
+    }
+    public synchronized static MobileLedgerProfile initProfile() {
+        MobileLedgerProfile currentProfile = profile.getValue();
+        if (currentProfile != null)
+            return currentProfile;
+
+        String profileUUID = MLDB.getOption(MLDB.OPT_PROFILE_UUID, null);
+        MobileLedgerProfile startupProfile = getProfile(profileUUID);
+        if (startupProfile != null)
+            setCurrentProfile(startupProfile);
+        return startupProfile;
+    }
+
+    public static void removeProfileObservers(LifecycleOwner owner) {
+        profile.removeObservers(owner);
+    }
 }
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