1 files changed, 154 insertions, 0 deletions
diff --git a/java/com/android/dialer/searchfragment/common/QueryBoldingUtil.java b/java/com/android/dialer/searchfragment/common/QueryBoldingUtil.java
new file mode 100644
index 000000000..7bdd69567
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+++ b/java/com/android/dialer/searchfragment/common/QueryBoldingUtil.java
@@ -0,0 +1,154 @@
+/*
+ * 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.searchfragment.common;
+
+import android.graphics.Typeface;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.text.SpannableString;
+import android.text.Spanned;
+import android.text.TextUtils;
+import android.text.style.StyleSpan;
+
+/** Utility class for handling bolding queries contained in string. */
+public class QueryBoldingUtil {
+
+  /**
+   * Compares a name and query and returns a {@link CharSequence} with bolded characters.
+   *
+   * <p>Some example:
+   *
+   * <ul>
+   *   <li>"query" would bold "John [query] Smith"
+   *   <li>"222" would bold "[AAA] Mom"
+   *   <li>"222" would bold "[A]llen [A]lex [A]aron"
+   * </ul>
+   *
+   * @param query containing any characters
+   * @param name of a contact/string that query will compare to
+   * @return name with query bolded if query can be found in the name.
+   */
+  public static CharSequence getNameWithQueryBolded(@Nullable String query, @NonNull String name) {
+    if (TextUtils.isEmpty(query)) {
+      return name;
+    }
+
+    int index = -1;
+    int numberOfBoldedCharacters = 0;
+
+    if (QueryFilteringUtil.nameMatchesT9Query(query, name)) {
+      // Bold the characters that match the t9 query
+      String t9 = QueryFilteringUtil.getT9Representation(name);
+      index = QueryFilteringUtil.indexOfQueryNonDigitsIgnored(query, t9);
+      if (index == -1) {
+        return getNameWithInitialsBolded(query, name);
+      }
+      numberOfBoldedCharacters = query.length();
+
+      for (int i = 0; i < query.length(); i++) {
+        char c = query.charAt(i);
+        if (!Character.isDigit(c)) {
+          numberOfBoldedCharacters--;
+        }
+      }
+
+      for (int i = 0; i < index + numberOfBoldedCharacters; i++) {
+        if (!Character.isLetterOrDigit(name.charAt(i))) {
+          if (i < index) {
+            index++;
+          } else {
+            numberOfBoldedCharacters++;
+          }
+        }
+      }
+    }
+
+    if (index == -1) {
+      // Bold the query as an exact match in the name
+      index = name.toLowerCase().indexOf(query);
+      numberOfBoldedCharacters = query.length();
+    }
+
+    return index == -1 ? name : getBoldedString(name, index, numberOfBoldedCharacters);
+  }
+
+  private static CharSequence getNameWithInitialsBolded(String query, String name) {
+    SpannableString boldedInitials = new SpannableString(name);
+    name = name.toLowerCase();
+    int initialsBolded = 0;
+    int nameIndex = -1;
+
+    while (++nameIndex < name.length() && initialsBolded < query.length()) {
+      if ((nameIndex == 0 || name.charAt(nameIndex - 1) == ' ')
+          && QueryFilteringUtil.getDigit(name.charAt(nameIndex)) == query.charAt(initialsBolded)) {
+        boldedInitials.setSpan(
+            new StyleSpan(Typeface.BOLD),
+            nameIndex,
+            nameIndex + 1,
+            Spanned.SPAN_INCLUSIVE_INCLUSIVE);
+        initialsBolded++;
+      }
+    }
+    return boldedInitials;
+  }
+
+  /**
+   * Compares a number and a query and returns a {@link CharSequence} with bolded characters.
+   *
+   * <ul>
+   *   <li>"123" would bold "(650)34[1-23]24"
+   *   <li>"123" would bold "+1([123])111-2222
+   * </ul>
+   *
+   * @param query containing only numbers and phone number related characters "(", ")", "-", "+"
+   * @param number phone number of a contact that the query will compare to.
+   * @return number with query bolded if query can be found in the number.
+   */
+  public static CharSequence getNumberWithQueryBolded(
+      @Nullable String query, @NonNull String number) {
+    if (TextUtils.isEmpty(query) || !QueryFilteringUtil.numberMatchesNumberQuery(query, number)) {
+      return number;
+    }
+
+    int index = QueryFilteringUtil.indexOfQueryNonDigitsIgnored(query, number);
+    int boldedCharacters = query.length();
+
+    for (char c : query.toCharArray()) {
+      if (!Character.isDigit(c)) {
+        boldedCharacters--;
+      }
+    }
+
+    for (int i = 0; i < index + boldedCharacters; i++) {
+      if (!Character.isDigit(number.charAt(i))) {
+        if (i <= index) {
+          index++;
+        } else {
+          boldedCharacters++;
+        }
+      }
+    }
+    return getBoldedString(number, index, boldedCharacters);
+  }
+
+  private static SpannableString getBoldedString(String s, int index, int numBolded) {
+    SpannableString span = new SpannableString(s);
+    span.setSpan(
+        new StyleSpan(Typeface.BOLD), index, index + numBolded, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
+    return span;
+  }
+}