File: download_dialog_bridge.cc

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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/download/android/download_dialog_bridge.h"

#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/metrics/field_trial_params.h"
#include "base/metrics/histogram_macros.h"
#include "chrome/browser/download/android/download_controller.h"
#include "chrome/browser/download/android/jni_headers/DownloadDialogBridge_jni.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/common/pref_names.h"
#include "components/download/public/common/download_features.h"
#include "components/prefs/android/pref_service_android.h"
#include "components/prefs/pref_service.h"
#include "ui/android/window_android.h"

// -----------------------------------------------------------------------------
// DownloadDialogResult
DownloadDialogResult::DownloadDialogResult() = default;

DownloadDialogResult::DownloadDialogResult(const DownloadDialogResult&) =
    default;

DownloadDialogResult::~DownloadDialogResult() = default;

// -----------------------------------------------------------------------------
// DownloadDialogBridge.
DownloadDialogBridge::DownloadDialogBridge() : is_dialog_showing_(false) {
  JNIEnv* env = base::android::AttachCurrentThread();
  java_obj_.Reset(env, Java_DownloadDialogBridge_create(
                           env, reinterpret_cast<intptr_t>(this))
                           .obj());
  DCHECK(!java_obj_.is_null());
}

DownloadDialogBridge::~DownloadDialogBridge() {
  JNIEnv* env = base::android::AttachCurrentThread();
  Java_DownloadDialogBridge_destroy(env, java_obj_);
}

void DownloadDialogBridge::ShowDialog(
    gfx::NativeWindow native_window,
    int64_t total_bytes,
    net::NetworkChangeNotifier::ConnectionType connection_type,
    DownloadLocationDialogType dialog_type,
    const base::FilePath& suggested_path,
    Profile* profile,
    DialogCallback dialog_callback) {
  if (!native_window)
    return;

  UMA_HISTOGRAM_ENUMERATION("MobileDownload.Location.Dialog.Type", dialog_type);

  dialog_callback_ = std::move(dialog_callback);

  // This shouldn't happen.
  if (dialog_type == DownloadLocationDialogType::NO_DIALOG) {
    NOTREACHED();
  }

  // If dialog is showing, run the callback to continue without confirmation.
  if (is_dialog_showing_) {
    DownloadDialogResult dialog_result;
    dialog_result.location_result =
        DownloadLocationDialogResult::DUPLICATE_DIALOG;
    dialog_result.file_path = suggested_path;
    CompleteSelection(std::move(dialog_result));
    return;
  }

  is_dialog_showing_ = true;

  JNIEnv* env = base::android::AttachCurrentThread();
  Java_DownloadDialogBridge_showDialog(
      env, java_obj_, native_window->GetJavaObject(),
      static_cast<long>(total_bytes), static_cast<int>(connection_type),
      static_cast<int>(dialog_type), suggested_path.AsUTF8Unsafe(),
      profile->GetJavaObject());
}

void DownloadDialogBridge::OnComplete(
    JNIEnv* env,
    const base::android::JavaParamRef<jobject>& obj,
    std::string& returned_path) {
  DownloadDialogResult dialog_result;
  dialog_result.location_result = DownloadLocationDialogResult::USER_CONFIRMED;
  dialog_result.file_path = base::FilePath(returned_path);

  CompleteSelection(std::move(dialog_result));
  is_dialog_showing_ = false;
}

void DownloadDialogBridge::OnCanceled(
    JNIEnv* env,
    const base::android::JavaParamRef<jobject>& obj) {
  if (dialog_callback_) {
    DownloadDialogResult dialog_result;
    dialog_result.location_result = DownloadLocationDialogResult::USER_CANCELED;
    CompleteSelection(std::move(dialog_result));
  }

  is_dialog_showing_ = false;
}

void DownloadDialogBridge::CompleteSelection(DownloadDialogResult result) {
  if (!dialog_callback_)
    return;

  UMA_HISTOGRAM_ENUMERATION("MobileDownload.Location.Dialog.Result",
                            result.location_result);
  std::move(dialog_callback_).Run(std::move(result));
}

// static
void JNI_DownloadDialogBridge_SetDownloadAndSaveFileDefaultDirectory(
    JNIEnv* env,
    const base::android::JavaParamRef<jobject>& jpref_service,
    std::string& directory) {
  PrefService* pref_service =
      PrefServiceAndroid::FromPrefServiceAndroid(jpref_service);

  base::FilePath path(directory);
  pref_service->SetFilePath(prefs::kDownloadDefaultDirectory, path);
  pref_service->SetFilePath(prefs::kSaveFileDefaultDirectory, path);
}