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// 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 "content/browser/android/smart_selection_client.h"
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/bind.h"
#include "base/memory/ptr_util.h"
#include "base/supports_user_data.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "jni/SmartSelectionClient_jni.h"
using base::android::AttachCurrentThread;
using base::android::ConvertUTF16ToJavaString;
using base::android::JavaParamRef;
using base::android::ScopedJavaLocalRef;
namespace content {
namespace {
const void* const kSmartSelectionClientUDKey = &kSmartSelectionClientUDKey;
// This class deletes SmartSelectionClient when WebContents is destroyed.
class UserData : public base::SupportsUserData::Data {
public:
explicit UserData(SmartSelectionClient* client) : client_(client) {}
private:
std::unique_ptr<SmartSelectionClient> client_;
DISALLOW_IMPLICIT_CONSTRUCTORS(UserData);
};
}
jlong JNI_SmartSelectionClient_Init(
JNIEnv* env,
const JavaParamRef<jobject>& obj,
const JavaParamRef<jobject>& jweb_contents) {
WebContents* web_contents = WebContents::FromJavaWebContents(jweb_contents);
CHECK(web_contents)
<< "A SmartSelectionClient should be created with a valid WebContents.";
return reinterpret_cast<intptr_t>(
new SmartSelectionClient(env, obj, web_contents));
}
SmartSelectionClient::SmartSelectionClient(
JNIEnv* env,
const base::android::JavaRef<jobject>& obj,
WebContents* web_contents)
: java_ref_(env, obj),
web_contents_(web_contents),
weak_ptr_factory_(this) {
DCHECK(!web_contents_->GetUserData(kSmartSelectionClientUDKey));
web_contents_->SetUserData(kSmartSelectionClientUDKey,
std::make_unique<UserData>(this));
}
SmartSelectionClient::~SmartSelectionClient() {
JNIEnv* env = base::android::AttachCurrentThread();
ScopedJavaLocalRef<jobject> j_obj = java_ref_.get(env);
if (!j_obj.is_null()) {
Java_SmartSelectionClient_onNativeSideDestroyed(
env, j_obj, reinterpret_cast<intptr_t>(this));
}
}
void SmartSelectionClient::RequestSurroundingText(
JNIEnv* env,
const JavaParamRef<jobject>& obj,
int num_extra_characters,
int callback_data) {
RenderFrameHost* focused_frame = web_contents_->GetFocusedFrame();
if (!focused_frame) {
OnSurroundingTextReceived(callback_data, base::string16(), 0, 0);
return;
}
focused_frame->RequestTextSurroundingSelection(
base::Bind(&SmartSelectionClient::OnSurroundingTextReceived,
weak_ptr_factory_.GetWeakPtr(), callback_data),
num_extra_characters);
}
void SmartSelectionClient::CancelAllRequests(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj) {
weak_ptr_factory_.InvalidateWeakPtrs();
}
void SmartSelectionClient::OnSurroundingTextReceived(int callback_data,
const base::string16& text,
int start,
int end) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
if (!obj.is_null()) {
ScopedJavaLocalRef<jstring> j_text = ConvertUTF16ToJavaString(env, text);
Java_SmartSelectionClient_onSurroundingTextReceived(env, obj, callback_data,
j_text, start, end);
}
}
} // namespace content
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