[Payments] Display warning messages for incomplete shipping address and update editor title

chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java
index db3f746d68ffd1a37a4f4d440e8a8ba56683f94d..f7517311727824b7014e77b3742eff9bc2a97540 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/AutofillAddress.java
@@ -4,12 +4,18 @@
 
 package org.chromium.chrome.browser.payments;
 
+import android.content.Context;
+import android.telephony.PhoneNumberUtils;
 import android.text.TextUtils;
 
+import org.chromium.chrome.R;
 import org.chromium.chrome.browser.autofill.PersonalDataManager.AutofillProfile;
 import org.chromium.chrome.browser.payments.ui.PaymentOption;
+import org.chromium.chrome.browser.preferences.autofill.AutofillProfileBridge;
+import org.chromium.chrome.browser.preferences.autofill.AutofillProfileBridge.AddressField;
 import org.chromium.payments.mojom.PaymentAddress;
 
+import java.util.List;
 import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -31,6 +37,7 @@ public class AutofillAddress extends PaymentOption {
 
     @Nullable private static Pattern sRegionCodePattern;
 
+    private Context mContext;
     private AutofillProfile mProfile;
     @Nullable private Pattern mLanguageScriptCodePattern;
 
@@ -39,11 +46,12 @@ public class AutofillAddress extends PaymentOption {
      *
      * @param profile The autofill profile containing the address information.
      */
-    public AutofillAddress(AutofillProfile profile, boolean isComplete) {
+    public AutofillAddress(Context context, AutofillProfile profile) {
         super(profile.getGUID(), profile.getFullName(), profile.getLabel(),
                 profile.getPhoneNumber(), null);
+        mContext = context;
         mProfile = profile;
-        mIsComplete = isComplete;
+        checkAndUpdateAddressCompleteness();
     }
 
     /** @return The autofill profile where this address data lives. */
@@ -59,9 +67,87 @@ public class AutofillAddress extends PaymentOption {
      */
     public void completeAddress(AutofillProfile profile) {
         mProfile = profile;
-        mIsComplete = true;
         updateIdentifierAndLabels(mProfile.getGUID(), mProfile.getFullName(), mProfile.getLabel(),
                 mProfile.getPhoneNumber());
+        checkAndUpdateAddressCompleteness();
+        assert mIsComplete;
+    }
+
+    /**
+     * Checks whether this address is complete, i.e., can be sent to the merchant as-is without
+     * editing first. And updates edit message, edit title and complete status.
+     *
+     * If the country code is not set or invalid, but all fields for the default locale's country
+     * code are present, then the profile is deemed "complete." AutoflllAddress.toPaymentAddress()
+     * will use the default locale to fill in a blank country code before sending the address to the
+     * renderer.
+     */
+    private void checkAndUpdateAddressCompleteness() {
+        int invalidFieldsCount = 0;
+        int editMessageResId = 0;
+        int editTitleResId = 0;
+
+        if (!PhoneNumberUtils.isGlobalPhoneNumber(
+                    PhoneNumberUtils.stripSeparators(mProfile.getPhoneNumber().toString()))) {
+            editMessageResId = R.string.payments_phone_number_required;
+            editTitleResId = R.string.payments_add_phone_number;
+            invalidFieldsCount++;
+        }
+
+        List<Integer> requiredFields = AutofillProfileBridge.getRequiredAddressFields(
+                AutofillAddress.getCountryCode(mProfile));
+        for (int i = 0; i < requiredFields.size(); i++) {
+            int fieldId = requiredFields.get(i);
+            if (fieldId == AddressField.RECIPIENT || fieldId == AddressField.COUNTRY) continue;
+            if (!TextUtils.isEmpty(getProfileField(mProfile, fieldId))) continue;
+            editMessageResId = R.string.payments_invalid_address;
+            editTitleResId = R.string.payments_add_valid_address;
+            invalidFieldsCount++;
+            break;
+        }
+
+        if (TextUtils.isEmpty(mProfile.getFullName())) {
+            editMessageResId = R.string.payments_recipient_required;
+            editTitleResId = R.string.payments_add_recipient;
+            invalidFieldsCount++;
+        }
+
+        if (invalidFieldsCount > 1) {
+            editMessageResId = R.string.payments_more_information_required;
+            editTitleResId = R.string.payments_add_more_information;
+        }
+
+        mEditMessage = editMessageResId == 0 ? null : mContext.getString(editMessageResId);
+        mEditTitle = editTitleResId == 0 ? null : mContext.getString(editTitleResId);
+        mIsComplete = mEditMessage == null;
+    }
+
+    /** @return The given autofill profile field. */
+    public static String getProfileField(AutofillProfile profile, int field) {
+        assert profile != null;
+        switch (field) {
+            case AddressField.COUNTRY:
+                return profile.getCountryCode();
+            case AddressField.ADMIN_AREA:
+                return profile.getRegion();
+            case AddressField.LOCALITY:
+                return profile.getLocality();
+            case AddressField.DEPENDENT_LOCALITY:
+                return profile.getDependentLocality();
+            case AddressField.SORTING_CODE:
+                return profile.getSortingCode();
+            case AddressField.POSTAL_CODE:
+                return profile.getPostalCode();
+            case AddressField.STREET_ADDRESS:
+                return profile.getStreetAddress();
+            case AddressField.ORGANIZATION:
+                return profile.getCompanyName();
+            case AddressField.RECIPIENT:
+                return profile.getFullName();
+        }
+
+        assert false;
+        return null;
     }
 
     /** @return The country code to use, e.g., when constructing an editor for this address. */