Use loader for accounts in editor account chooser

The list of accounts on the dialog now updates when they are added or
removed.

Test: manually verify that list of accounts updates when adding or
removing accounts

Bug 33627801

Change-Id: I3c92c80f0a93a865050b115b5b3d931eea80b2af

2 files changed, 59 insertions, 1 deletions

diff --git a/src/com/android/contacts/model/AccountTypeManager.java b/src/com/android/contacts/model/AccountTypeManager.java
index 93ddd04ac..961fa6377 100644
--- a/src/com/android/contacts/model/AccountTypeManager.java
+++ b/src/com/android/contacts/model/AccountTypeManager.java
@@ -429,7 +429,7 @@ class AccountTypeManagerImpl extends AccountTypeManager
         reloadAccountTypes();
     }
 
-    /* This notification will arrive on the background thread */
+    /* This notification will arrive on the UI thread */
     public void onAccountsUpdated(Account[] accounts) {
         onAccountsUpdatedInternal();
     }
diff --git a/src/com/android/contacts/model/account/AccountsLoader.java b/src/com/android/contacts/model/account/AccountsLoader.java
new file mode 100644
index 000000000..78f309b12
--- /dev/null
+++ b/src/com/android/contacts/model/account/AccountsLoader.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.contacts.model.account;
+
+import android.content.Context;
+import android.content.IntentFilter;
+
+import com.android.contacts.model.AccountTypeManager;
+import com.android.contacts.util.concurrent.ListenableFutureLoader;
+import com.google.common.base.Objects;
+import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
+import com.google.common.util.concurrent.ListenableFuture;
+
+import java.util.List;
+
+/**
+ * Loads the accounts from AccountTypeManager
+ */
+public class AccountsLoader extends ListenableFutureLoader<List<AccountInfo>> {
+    private final AccountTypeManager mAccountTypeManager;
+    private final Predicate<AccountInfo> mFilter;
+
+    public AccountsLoader(Context context) {
+        this(context, Predicates.<AccountInfo>alwaysTrue());
+    }
+
+    public AccountsLoader(Context context, Predicate<AccountInfo> filter) {
+        super(context, new IntentFilter(AccountTypeManager.BROADCAST_ACCOUNTS_CHANGED));
+        mAccountTypeManager = AccountTypeManager.getInstance(context);
+        mFilter = filter;
+    }
+
+    @Override
+    protected ListenableFuture<List<AccountInfo>> loadData() {
+        return mAccountTypeManager.filterAccountsAsync(mFilter);
+    }
+
+    @Override
+    protected boolean isSameData(List<AccountInfo> previous, List<AccountInfo> next) {
+        return Objects.equal(AccountInfo.extractAccounts(previous),
+                AccountInfo.extractAccounts(next));
+    }
+
+}