WebView autofill implementation

components/autofill/core/browser/form_data_android.cc

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/autofill/core/browser/form_data_android.h"
+
+#include "base/android/jni_string.h"
+#include "components/autofill/core/browser/form_field_data_android.h"
+#include "jni/FormData_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertJavaStringToUTF16;
+using base::android::ConvertUTF16ToJavaString;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::JavaParamRef;
+using base::android::JavaRef;
+using base::android::ScopedJavaGlobalRef;
+using base::android::ScopedJavaLocalRef;
+
+namespace autofill {
+
+FormDataAndroid::FormDataAndroid(const FormData& form)
+    : form_(form), index_(0) {}
+
+FormDataAndroid::~FormDataAndroid() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return;
+
+  Java_FormData_onNativeDestroyed(env, obj);
+}
+
+ScopedJavaLocalRef<jobject> FormDataAndroid::GetJavaPeer() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null()) {
+    for (size_t i = 0; i < form_.fields.size(); ++i) {
+      fields_.push_back(std::unique_ptr<FormFieldDataAndroid>(
+          new FormFieldDataAndroid(&form_.fields[i])));
+    }
+    ScopedJavaLocalRef<jstring> jname =
+        ConvertUTF16ToJavaString(env, form_.name);
+    ScopedJavaLocalRef<jstring> jorigin =
+        ConvertUTF8ToJavaString(env, form_.origin.spec());
+    obj = Java_FormData_createFormData(env, reinterpret_cast<intptr_t>(this),
+                                       jname, jorigin, form_.fields.size());
+    java_ref_ = JavaObjectWeakGlobalRef(env, obj);
+  }
+  return obj;
+}
+
+const FormData& FormDataAndroid::PullAutofillValues() {
+  for (auto& field : fields_)
+    field->GetValue();
+  return form_;
+}
+
+ScopedJavaLocalRef<jobject> FormDataAndroid::GetNextFormFieldData(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& jcaller) {
+  DCHECK(index_ <= fields_.size());
+  if (index_ == fields_.size())
+    return ScopedJavaLocalRef<jobject>();
+  return fields_[index_++]->GetJavaPeer();
+}
+
+void FormDataAndroid::OnTextFieldDidChange(size_t index,
+                                           const base::string16& value) {
+  form_.fields[index].value = value;
+  fields_[index]->OnTextFieldDidChange(value);
+}
+
+bool FormDataAndroid::GetFieldIndex(const FormFieldData& field, size_t* index) {
+  for (size_t i = 0; i < form_.fields.size(); ++i) {
+    if (form_.fields[i].SameFieldAs(field)) {
+      *index = i;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool FormDataAndroid::GetSimilarFieldIndex(const FormFieldData& field,
+                                           size_t* index) {
+  for (size_t i = 0; i < form_.fields.size(); ++i) {
+    if (form_.fields[i].SimilarFieldAs(field)) {
+      *index = i;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool FormDataAndroid::SimilarFormAs(const FormData& form) {
+  return form_.SimilarFormAs(form);
+}
+
+bool RegisterFormDataAndroid(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace autofil