1 files changed, 68 insertions, 0 deletions
diff --git a/java/com/android/dialer/precall/PreCallCoordinator.java b/java/com/android/dialer/precall/PreCallCoordinator.java
new file mode 100644
index 000000000..b5e9e8594
--- /dev/null
+++ b/java/com/android/dialer/precall/PreCallCoordinator.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2017 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.precall;
+
+import android.app.Activity;
+import android.support.annotation.MainThread;
+import android.support.annotation.NonNull;
+import com.android.dialer.callintent.CallIntentBuilder;
+
+/**
+ * Runs {@link PreCallAction} one by one to prepare a {@link
+ * com.android.dialer.callintent.CallIntentBuilder} for a call.
+ */
+public interface PreCallCoordinator {
+
+  @NonNull
+  CallIntentBuilder getBuilder();
+
+  /**
+   * @return the activity to attach the UI to. Returns {@link null} if the coordinator is running on
+   *     headless mode. TODO(twyen): implement headless mode.
+   */
+  @NonNull
+  Activity getActivity();
+
+  /**
+   * Called by a {@link PreCallAction} to abort the call. For example, the user has dismissed the
+   * dialog and must start over.
+   */
+  void abortCall();
+
+  /**
+   * Callback from a {@link PreCallAction} to signal the action started by {@link
+   * PreCallCoordinator#startPendingAction()} has finished.
+   */
+  interface PendingAction {
+
+    @MainThread
+    void finish();
+  }
+
+  /**
+   * Called by the current running {@link PreCallAction} to release the main thread and resume
+   * pre-call later.
+   *
+   * @return a {@link PendingAction} which {@link PendingAction#finish(boolean)} should be called to
+   *     resume pre-call. For example the action shows a dialog to the user, startPendingAction()
+   *     should be called as the action will not be finished immediately. When the dialog is
+   *     completed, {@code finish()} is then called to continue the next step.
+   */
+  @MainThread
+  @NonNull
+  PendingAction startPendingAction();
+}