Convert Dialer activities to AppCompat to support Snackbar.
In order to add an "Undo" snackbar for voicemail, dialer activities need
to inherit from the AppCompat library. Add the relevant libraries to the
make files and change the styles to be compatible.
Bug: 22460745
Change-Id: Ia3cc4002cbd943da818fec67f888d085d53a3b25
diff --git a/src/com/android/dialer/TransactionSafeActivity.java b/src/com/android/dialer/TransactionSafeActivity.java
new file mode 100644
index 0000000..81e5012
--- /dev/null
+++ b/src/com/android/dialer/TransactionSafeActivity.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2011 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.dialer;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+
+/**
+ * A common superclass that keeps track of whether an {@link Activity} has saved its state yet or
+ * not.
+ */
+public abstract class TransactionSafeActivity extends AppCompatActivity {
+
+ private boolean mIsSafeToCommitTransactions;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ mIsSafeToCommitTransactions = true;
+ }
+
+ @Override
+ protected void onStart() {
+ super.onStart();
+ mIsSafeToCommitTransactions = true;
+ }
+
+ @Override
+ protected void onResume() {
+ super.onResume();
+ mIsSafeToCommitTransactions = true;
+ }
+
+ @Override
+ protected void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ mIsSafeToCommitTransactions = false;
+ }
+
+ /**
+ * Returns true if it is safe to commit {@link FragmentTransaction}s at this time, based on
+ * whether {@link Activity#onSaveInstanceState} has been called or not.
+ *
+ * Make sure that the current activity calls into
+ * {@link super.onSaveInstanceState(Bundle outState)} (if that method is overridden),
+ * so the flag is properly set.
+ */
+ public boolean isSafeToCommitTransactions() {
+ return mIsSafeToCommitTransactions;
+ }
+}