1 files changed, 129 insertions, 0 deletions
diff --git a/java/com/android/dialer/app/voicemail/VoicemailErrorManager.java b/java/com/android/dialer/app/voicemail/VoicemailErrorManager.java
new file mode 100644
index 000000000..939007adf
--- /dev/null
+++ b/java/com/android/dialer/app/voicemail/VoicemailErrorManager.java
@@ -0,0 +1,129 @@
+/*
+ * 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.dialer.app.voicemail;
+
+import android.content.Context;
+import android.database.ContentObserver;
+import android.database.Cursor;
+import android.os.Handler;
+import com.android.dialer.app.calllog.CallLogAlertManager;
+import com.android.dialer.app.calllog.CallLogModalAlertManager;
+import com.android.dialer.app.voicemail.error.VoicemailErrorAlert;
+import com.android.dialer.app.voicemail.error.VoicemailErrorMessageCreator;
+import com.android.dialer.app.voicemail.error.VoicemailStatus;
+import com.android.dialer.app.voicemail.error.VoicemailStatusReader;
+import com.android.dialer.database.CallLogQueryHandler;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Fetches voicemail status and generate {@link VoicemailStatus} for {@link VoicemailErrorAlert} to
+ * show.
+ */
+public class VoicemailErrorManager implements CallLogQueryHandler.Listener, VoicemailStatusReader {
+
+  private final Context context;
+  private final CallLogQueryHandler callLogQueryHandler;
+  private final VoicemailErrorAlert alertItem;
+
+  private final ContentObserver statusObserver =
+      new ContentObserver(new Handler()) {
+        @Override
+        public void onChange(boolean selfChange) {
+          super.onChange(selfChange);
+          maybeFetchStatus();
+        }
+      };
+
+  private boolean isForeground;
+  private boolean statusInvalidated;
+
+  public VoicemailErrorManager(
+      Context context,
+      CallLogAlertManager alertManager,
+      CallLogModalAlertManager modalAlertManager) {
+    this.context = context;
+    alertItem =
+        new VoicemailErrorAlert(
+            context, alertManager, modalAlertManager, new VoicemailErrorMessageCreator());
+    callLogQueryHandler = new CallLogQueryHandler(context, context.getContentResolver(), this);
+    maybeFetchStatus();
+  }
+
+  public ContentObserver getContentObserver() {
+    return statusObserver;
+  }
+
+  @Override
+  public void onVoicemailStatusFetched(Cursor statusCursor) {
+    List<VoicemailStatus> statuses = new ArrayList<>();
+    while (statusCursor.moveToNext()) {
+      VoicemailStatus status = new VoicemailStatus(context, statusCursor);
+      if (status.isActive()) {
+        statuses.add(status);
+      }
+    }
+    alertItem.updateStatus(statuses, this);
+    // TODO: b/30668323 support error from multiple sources.
+    return;
+  }
+
+  @Override
+  public void onVoicemailUnreadCountFetched(Cursor cursor) {
+    // Do nothing
+  }
+
+  @Override
+  public void onMissedCallsUnreadCountFetched(Cursor cursor) {
+    // Do nothing
+  }
+
+  @Override
+  public boolean onCallsFetched(Cursor combinedCursor) {
+    // Do nothing
+    return false;
+  }
+
+  public void onResume() {
+    isForeground = true;
+    if (statusInvalidated) {
+      maybeFetchStatus();
+    }
+  }
+
+  public void onPause() {
+    isForeground = false;
+    statusInvalidated = false;
+  }
+
+  @Override
+  public void refresh() {
+    maybeFetchStatus();
+  }
+
+  /**
+   * Fetch the status when the dialer is in foreground, or queue a fetch when the dialer resumes.
+   */
+  private void maybeFetchStatus() {
+    if (!isForeground) {
+      // Dialer is in the background, UI should not be updated. Reload the status when it resumes.
+      statusInvalidated = true;
+      return;
+    }
+    callLogQueryHandler.fetchVoicemailStatus();
+  }
+}