Cherrypick Arabic/Farsi pasting into dialpad fix

Bug: 6656969
Change-Id: I0bb094125eb9be2b6508e6ca658ae23da9da19d1

2 files changed, 54 insertions, 3 deletions

diff --git a/src/com/android/dialer/dialpad/DialpadFragment.java b/src/com/android/dialer/dialpad/DialpadFragment.java
index 2c4841685..0c859f171 100644
--- a/src/com/android/dialer/dialpad/DialpadFragment.java
+++ b/src/com/android/dialer/dialpad/DialpadFragment.java
@@ -306,14 +306,12 @@ public class DialpadFragment extends Fragment
 
         mDigitsContainer = fragmentView.findViewById(R.id.digits_container);
         mDigits = (EditText) fragmentView.findViewById(R.id.digits);
-        mDigits.setKeyListener(DialerKeyListener.getInstance());
+        mDigits.setKeyListener(UnicodeDialerKeyListener.INSTANCE);
         mDigits.setOnClickListener(this);
         mDigits.setOnKeyListener(this);
         mDigits.setOnLongClickListener(this);
         mDigits.addTextChangedListener(this);
-
         PhoneNumberFormatter.setPhoneNumberFormattingTextWatcher(getActivity(), mDigits);
-
         // Check for the presence of the keypad
         View oneButton = fragmentView.findViewById(R.id.one);
         if (oneButton != null) {
diff --git a/src/com/android/dialer/dialpad/UnicodeDialerKeyListener.java b/src/com/android/dialer/dialpad/UnicodeDialerKeyListener.java
new file mode 100644
index 000000000..c25c7a9dd
--- /dev/null
+++ b/src/com/android/dialer/dialpad/UnicodeDialerKeyListener.java
@@ -0,0 +1,53 @@
+/*
+ * 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.dialpad;
+
+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) {
+        CharSequence converted = 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;
+    }
+}