Autofill address editor in PaymentRequest UI.

chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
index 755cb67d7c8019305fee26e2d9690b81bacc9d9e..4a638ec26832cc7d0d355390094bc9388c0fdfab 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
@@ -25,38 +25,44 @@ public class AutofillProfileBridge {
 
     /**
      * Address field types.
-     * This list must be kept in-sync with the corresponding enum in auotfill_profile_bridge.cc.
+     * This list must be kept in-sync with the corresponding enum in
+     * third_party/libaddressinput/src/cpp/include/libaddressinput/address_field.h
      */
-    static class AddressField {
-        static final int COUNTRY = 0;
-        static final int ADMIN_AREA = 1;
-        static final int LOCALITY = 2;
-        static final int DEPENDENT_LOCALITY = 3;
-        static final int SORTING_CODE = 4;
-        static final int POSTAL_CODE = 5;
-        static final int STREET_ADDRESS = 6;
-        static final int ORGANIZATION = 7;
-        static final int RECIPIENT = 8;
-
-        static final int NUM_FIELDS = 9;
+    public static class AddressField {
+        public static final int COUNTRY = 0;
+        public static final int ADMIN_AREA = 1;
+        public static final int LOCALITY = 2;
+        public static final int DEPENDENT_LOCALITY = 3;
+        public static final int SORTING_CODE = 4;
+        public static final int POSTAL_CODE = 5;
+        public static final int STREET_ADDRESS = 6;
+        public static final int ORGANIZATION = 7;
+        public static final int RECIPIENT = 8;
+
+        public static final int NUM_FIELDS = 9;
     }
 
     /**
-     * A convenience class for storing a CLDR country code and its corresponding
-     * localized display name.
+     * A convenience class for displaying keyed values in a dropdown.
      */
-    static class Country {
-        String mName;
-        String mCode;
+    public static class DropdownKeyValue extends Pair<String, String> {
+        DropdownKeyValue(String key, String value) {
+            super(key, value);
+        }
+
+        /** @return The key identifier. */
+        public String getKey() {
+            return super.first;
+        }
 
-        Country(String name, String code) {
-            mName = name;
-            mCode = code;
+        /** @return The human-readable localized display value. */
+        public String getValue() {
+            return super.second;
         }
 
         @Override
         public String toString() {
-            return mName;
+            return super.second;
         }
     }
 
@@ -69,28 +75,25 @@ public class AutofillProfileBridge {
         return nativeGetDefaultCountryCode();
     }
 
-    /**
-     * @return The list of supported countries sorted by their localized display
-     *         names.
-     */
-    static List<Country> getSupportedCountries() {
-        List<String> countryCodes = new ArrayList<String>();
-        List<String> countryNames = new ArrayList<String>();
-        List<Country> countries = new ArrayList<Country>();
+    /** @return The list of supported countries sorted by their localized display names. */
+    public static List<DropdownKeyValue> getSupportedCountries() {
+        List<String> countryCodes = new ArrayList<>();
+        List<String> countryNames = new ArrayList<>();
+        List<DropdownKeyValue> countries = new ArrayList<>();
 
         nativeGetSupportedCountries(countryCodes, countryNames);
 
         for (int i = 0; i < countryCodes.size(); i++) {
-            countries.add(new Country(countryNames.get(i), countryCodes.get(i)));
+            countries.add(new DropdownKeyValue(countryCodes.get(i), countryNames.get(i)));
         }
 
         final Collator collator = Collator.getInstance(Locale.getDefault());
         collator.setStrength(Collator.PRIMARY);
-        Collections.sort(countries, new Comparator<Country>() {
+        Collections.sort(countries, new Comparator<DropdownKeyValue>() {
             @Override
-            public int compare(Country lhs, Country rhs) {
-                int result = collator.compare(lhs.mName, rhs.mName);
-                if (result == 0) result = lhs.mCode.compareTo(rhs.mCode);
+            public int compare(DropdownKeyValue lhs, DropdownKeyValue rhs) {
+                int result = collator.compare(lhs.getValue(), rhs.getValue());
+                if (result == 0) result = lhs.getKey().compareTo(rhs.getKey());
                 return result;
             }
         });
@@ -98,6 +101,45 @@ public class AutofillProfileBridge {
         return countries;
     }
 
+    /** @return The list of required fields. COUNTRY is always included. RECIPIENT often omitted. */
+    public static List<Integer> getRequiredAddressFields(String countryCode) {
+        List<Integer> requiredFields = new ArrayList<>();
+        nativeGetRequiredFields(countryCode, requiredFields);
+        return requiredFields;
+    }
+
+    /**
+     * Description of an address editor input field.
+     */
+    public static class AddressUiComponent {
+        /** The type of the field, e.g., AddressField.LOCALITY. */
+        public final int id;
+
+        /** The localized display label for the field, e.g., "City." */
+        public final String label;
+
+        /** Whether the field is required. */
+        public final boolean isRequired;
+
+        /** Whether the field takes up the full line.*/
+        public final boolean isFullLine;
+
+        /**
+         * Builds a description of an address editor input field.
+         *
+         * @param id         The type of the field, .e.g., AddressField.LOCALITY.
+         * @param label      The localized display label for the field, .e.g., "City."
+         * @param isRequired Whether the field is required.
+         * @param isFullLine Whether the field takes up the full line.
+         */
+        public AddressUiComponent(int id, String label, boolean isRequired, boolean isFullLine) {
+            this.id = id;
+            this.label = label;
+            this.isRequired = isRequired;
+            this.isFullLine = isFullLine;
+        }
+    }
+
     /**
      * Returns the UI components for the CLDR countryCode and languageCode provided. If no language
      * code is provided, the application's default locale is used instead. Also stores the
@@ -108,24 +150,23 @@ public class AutofillProfileBridge {
      * @param languageCode The language code associated with the saved autofill profile that ui
      *                     components are being retrieved for; can be null if ui components are
      *                     being retrieved for a new profile.
-     * @return A list containing pairs where the first element in the pair is an Integer
-     *         representing the component id (one of the constants in AddressField), and the second
-     *         element in the pair is the localized component name (intended for use as labels in
-     *         the UI). The ordering in the list of pairs specifies the order these components
-     *         should appear in the UI.
+     * @return A list of address UI components. The ordering in the list specifies the order these
+     *         components should appear in the UI.
      */
-    List<Pair<Integer, String>> getAddressUiComponents(String countryCode,
-            String languageCode) {
-        List<Integer> componentIds = new ArrayList<Integer>();
-        List<String> componentNames = new ArrayList<String>();
-        List<Pair<Integer, String>> uiComponents = new ArrayList<Pair<Integer, String>>();
+    public List<AddressUiComponent> getAddressUiComponents(
+            String countryCode, String languageCode) {
+        List<Integer> componentIds = new ArrayList<>();
+        List<String> componentNames = new ArrayList<>();
+        List<Integer> componentRequired = new ArrayList<>();
+        List<Integer> componentLengths = new ArrayList<>();
+        List<AddressUiComponent> uiComponents = new ArrayList<>();
 
-        mCurrentBestLanguageCode =
-                nativeGetAddressUiComponents(countryCode, languageCode, componentIds,
-                        componentNames);
+        mCurrentBestLanguageCode = nativeGetAddressUiComponents(countryCode, languageCode,
+                componentIds, componentNames, componentRequired, componentLengths);
 
         for (int i = 0; i < componentIds.size(); i++) {
-            uiComponents.add(new Pair<Integer, String>(componentIds.get(i), componentNames.get(i)));
+            uiComponents.add(new AddressUiComponent(componentIds.get(i), componentNames.get(i),
+                    componentRequired.get(i) == 1, componentLengths.get(i) == 1));
         }
 
         return uiComponents;
@@ -135,7 +176,7 @@ public class AutofillProfileBridge {
      * @return The language code associated with the most recently retrieved address ui components.
      *         Will return null if getAddressUiComponents() has not been called yet.
      */
-    String getCurrentBestLanguageCode() {
+    public String getCurrentBestLanguageCode() {
         return mCurrentBestLanguageCode;
     }
 
@@ -156,6 +197,9 @@ public class AutofillProfileBridge {
     private static native String nativeGetDefaultCountryCode();
     private static native void nativeGetSupportedCountries(List<String> countryCodes,
             List<String> countryNames);
+    private static native void nativeGetRequiredFields(
+            String countryCode, List<Integer> requiredFields);
     private static native String nativeGetAddressUiComponents(String countryCode,
-            String languageCode, List<Integer> componentIds, List<String> componentNames);
+            String languageCode, List<Integer> componentIds, List<String> componentNames,
+            List<Integer> componentRequired, List<Integer> componentLengths);
 }