Call Blocking UI/String change

+ Adjusted UI/String according to new specifications.
+ Added class VisualVoicemailEnabledChecker
+ Block number dialog display different message depending
  on whether VVM is activated.

Bug:25455707
Change-Id: I09425053c91a5517e309302d421beadcc2d81cd4

1 files changed, 98 insertions, 0 deletions

diff --git a/src/com/android/dialer/voicemail/VisualVoicemailEnabledChecker.java b/src/com/android/dialer/voicemail/VisualVoicemailEnabledChecker.java
new file mode 100644
index 000000000..3134b1486
--- /dev/null
+++ b/src/com/android/dialer/voicemail/VisualVoicemailEnabledChecker.java
@@ -0,0 +1,98 @@
+package com.android.dialer.voicemail;
+
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.preference.PreferenceManager;
+import android.support.annotation.Nullable;
+
+import com.android.dialer.calllog.CallLogQueryHandler;
+
+/**
+ * Helper class to check whether visual voicemail is enabled.
+ *
+ * Call isVisualVoicemailEnabled() to retrieve the result.
+ *
+ * The result is cached and saved in a SharedPreferences, stored as a boolean in
+ * PREF_KEY_HAS_ACTIVE_VOICEMAIL_PROVIDER. Every time a new instance is created, it will try to
+ * restore the cached result from the SharedPreferences.
+ *
+ * Call asyncUpdate() to make a CallLogQuery to check the actual status. This is a async call so
+ * isVisualVoicemailEnabled() will not be affected immediately.
+ *
+ * If the status has changed as a result of asyncUpdate(),
+ * Callback.onVisualVoicemailEnabledStatusChanged() will be called with the new value.
+ */
+public class VisualVoicemailEnabledChecker implements CallLogQueryHandler.Listener {
+
+    public static final String PREF_KEY_HAS_ACTIVE_VOICEMAIL_PROVIDER =
+            "has_active_voicemail_provider";
+    private SharedPreferences mPrefs;
+    private boolean mHasActiveVoicemailProvider;
+    private CallLogQueryHandler mCallLogQueryHandler;
+    private VoicemailStatusHelper mVoicemailStatusHelper;
+    private Context mContext;
+
+    public interface Callback {
+
+        /**
+         * Callback to notify enabled status has changed to the @param newValue
+         */
+        void onVisualVoicemailEnabledStatusChanged(boolean newValue);
+    }
+
+    private Callback mCallback;
+
+    public VisualVoicemailEnabledChecker(Context context, @Nullable Callback callback) {
+        mContext = context;
+        mCallback = callback;
+        mPrefs = PreferenceManager.getDefaultSharedPreferences(mContext);
+        mVoicemailStatusHelper = new VoicemailStatusHelperImpl();
+        mHasActiveVoicemailProvider = mPrefs.getBoolean(PREF_KEY_HAS_ACTIVE_VOICEMAIL_PROVIDER,
+                false);
+    }
+
+    /**
+     * @return whether visual voicemail is enabled. Result is cached, call asyncUpdate() to
+     * update the result.
+     */
+    public boolean isVisualVoicemailEnabled() {
+        return mHasActiveVoicemailProvider;
+    }
+
+    /**
+     * Perform an async query into the system to check the status of visual voicemail.
+     * If the status has changed, Callback.onVisualVoicemailEnabledStatusChanged() will be called.
+     */
+    public void asyncUpdate() {
+        mCallLogQueryHandler =
+                new CallLogQueryHandler(mContext, mContext.getContentResolver(), this);
+        mCallLogQueryHandler.fetchVoicemailStatus();
+    }
+
+    @Override
+    public void onVoicemailStatusFetched(Cursor statusCursor) {
+        boolean hasActiveVoicemailProvider =
+                mVoicemailStatusHelper.getNumberActivityVoicemailSources(statusCursor) > 0;
+        if (hasActiveVoicemailProvider != mHasActiveVoicemailProvider) {
+            mHasActiveVoicemailProvider = hasActiveVoicemailProvider;
+            mPrefs.edit().putBoolean(PREF_KEY_HAS_ACTIVE_VOICEMAIL_PROVIDER,
+                    mHasActiveVoicemailProvider);
+            if (mCallback != null) {
+                mCallback.onVisualVoicemailEnabledStatusChanged(mHasActiveVoicemailProvider);
+            }
+        }
+    }
+
+    @Override
+    public void onVoicemailUnreadCountFetched(Cursor cursor) {
+        // Do nothing
+    }
+
+    @Override
+    public boolean onCallsFetched(Cursor combinedCursor) {
+        // Do nothing
+        return false;
+    }
+}