Update Dialer source to latest internal Google revision.

Previously, Android's Dialer app was developed in an internal Google
source control system and only exported to public during AOSP drops.

The Dialer team is now switching to a public development model similar
to the telephony team.

This CL represents all internal Google changes that were committed to
Dialer between the public O release and today's tip of tree on internal
master. This CL squashes those changes into a single commit.
In subsequent changes, changes will be exported on a per-commit basis.

Test: make, flash install, run
Merged-In: I45270eaa8ce732d71a1bd84b08c7fa0e99af3160
Change-Id: I529aaeb88535b9533c0ae4ef4e6c1222d4e0f1c8
PiperOrigin-RevId: 167068436

1 files changed, 56 insertions, 0 deletions

diff --git a/java/com/android/dialer/dialpadview/UnicodeDialerKeyListener.java b/java/com/android/dialer/dialpadview/UnicodeDialerKeyListener.java
new file mode 100644
index 000000000..e9201c0c2
--- /dev/null
+++ b/java/com/android/dialer/dialpadview/UnicodeDialerKeyListener.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2012 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.dialpadview;
+
+import android.telephony.PhoneNumberUtils;
+import android.text.Spanned;
+import android.text.method.DialerKeyListener;
+
+/**
+ * {@link DialerKeyListener} with Unicode support. Converts any Unicode(e.g. Arabic) characters that
+ * represent digits into digits before filtering the results so that we can support pasted digits
+ * from Unicode languages.
+ */
+public class UnicodeDialerKeyListener extends DialerKeyListener {
+
+  public static final UnicodeDialerKeyListener INSTANCE = new UnicodeDialerKeyListener();
+
+  @Override
+  public CharSequence filter(
+      CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
+    final String converted =
+        PhoneNumberUtils.convertKeypadLettersToDigits(
+            PhoneNumberUtils.replaceUnicodeDigits(source.toString()));
+    // PhoneNumberUtils.replaceUnicodeDigits performs a character for character replacement,
+    // so we can assume that start and end positions should remain unchanged.
+    CharSequence result = super.filter(converted, start, end, dest, dstart, dend);
+    if (result == null) {
+      if (source.equals(converted)) {
+        // There was no conversion or filtering performed. Just return null according to
+        // the behavior of DialerKeyListener.
+        return null;
+      } else {
+        // filter returns null if the charsequence is to be returned unchanged/unfiltered.
+        // But in this case we do want to return a modified character string (even if
+        // none of the characters in the modified string are filtered). So if
+        // result == null we return the unfiltered but converted numeric string instead.
+        return converted.subSequence(start, end);
+      }
+    }
+    return result;
+  }
+}