// Copyright 2014 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 "athena/home/app_list_view_delegate.h"

#include <string>

#include "athena/home/public/app_model_builder.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/strings/utf_string_conversions.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/app_list/app_list_model.h"
#include "ui/app_list/search_box_model.h"
#include "ui/app_list/search_provider.h"
#include "ui/app_list/search_result.h"
#include "ui/app_list/speech_ui_model.h"
#include "ui/gfx/image/image_skia.h"

namespace athena {

AppListViewDelegate::AppListViewDelegate(AppModelBuilder* model_builder)
    : model_(new app_list::AppListModel),
      speech_ui_(new app_list::SpeechUIModel(
          app_list::SPEECH_RECOGNITION_OFF)) {
  model_builder->PopulateApps(model_.get());
  // TODO(mukai): get the text from the resources.
  model_->search_box()->SetHintText(base::ASCIIToUTF16("Search"));
}

AppListViewDelegate::~AppListViewDelegate() {
  for (size_t i = 0; i < search_providers_.size(); ++i)
    search_providers_[i]->set_result_changed_callback(base::Closure());
}

void AppListViewDelegate::RegisterSearchProvider(
    app_list::SearchProvider* search_provider) {
  // Right now we allow only one provider.
  // TODO(mukai): port app-list's mixer and remove this restriction.
  DCHECK(search_providers_.empty());
  search_provider->set_result_changed_callback(base::Bind(
      &AppListViewDelegate::SearchResultChanged, base::Unretained(this)));
  search_providers_.push_back(search_provider);
}

void AppListViewDelegate::SearchResultChanged() {
  // TODO(mukai): port app-list's Mixer to reorder the results properly.
  app_list::SearchProvider* search_provider = search_providers_[0];
  std::vector<app_list::SearchResult*> results;
  search_provider->ReleaseResult(&results);
  model_->results()->DeleteAll();
  for (size_t i = 0; i < results.size(); ++i)
    model_->results()->Add(results[i]);
}

bool AppListViewDelegate::ForceNativeDesktop() const {
  return false;
}

void AppListViewDelegate::SetProfileByPath(const base::FilePath& profile_path) {
  // Nothing needs to be done.
}

app_list::AppListModel* AppListViewDelegate::GetModel() {
  return model_.get();
}

app_list::SpeechUIModel* AppListViewDelegate::GetSpeechUI() {
  return speech_ui_.get();
}

void AppListViewDelegate::GetShortcutPathForApp(
    const std::string& app_id,
    const base::Callback<void(const base::FilePath&)>& callback) {
  // Windows only, nothing is necessary.
}

void AppListViewDelegate::StartSearch() {
  for (size_t i = 0; i < search_providers_.size(); ++i)
    search_providers_[i]->Start(model_->search_box()->text());
}

void AppListViewDelegate::StopSearch() {
  for (size_t i = 0; i < search_providers_.size(); ++i)
    search_providers_[i]->Stop();
}

void AppListViewDelegate::OpenSearchResult(app_list::SearchResult* result,
                                           bool auto_launch,
                                           int event_flags) {
  result->Open(event_flags);
}

void AppListViewDelegate::InvokeSearchResultAction(
    app_list::SearchResult* result,
    int action_index,
    int event_flags) {
  // TODO(mukai): implement this.
}

base::TimeDelta AppListViewDelegate::GetAutoLaunchTimeout() {
  // Used by voice search, nothing needs to be done for now.
  return base::TimeDelta();
}

void AppListViewDelegate::AutoLaunchCanceled() {
  // Used by voice search, nothing needs to be done for now.
}

void AppListViewDelegate::ViewInitialized() {
  // Nothing needs to be done.
}

void AppListViewDelegate::Dismiss() {
  // Nothing needs to be done.
}

void AppListViewDelegate::ViewClosing() {
  // Nothing needs to be done.
}

gfx::ImageSkia AppListViewDelegate::GetWindowIcon() {
  return gfx::ImageSkia();
}

void AppListViewDelegate::OpenSettings() {
  // Nothing needs to be done for now.
  // TODO(mukai): should invoke the settings app.
}

void AppListViewDelegate::OpenHelp() {
  // Nothing needs to be done for now.
  // TODO(mukai): should invoke the help app.
}

void AppListViewDelegate::OpenFeedback() {
  // Nothing needs to be done for now.
  // TODO(mukai): should invoke the feedback app.
}

void AppListViewDelegate::ToggleSpeechRecognition() {
  // Nothing needs to be done.
}

void AppListViewDelegate::ShowForProfileByPath(
    const base::FilePath& profile_path) {
  // Nothing needs to be done.
}

views::View* AppListViewDelegate::CreateStartPageWebView(
    const gfx::Size& size) {
  return NULL;
}

bool AppListViewDelegate::IsSpeechRecognitionEnabled() {
  return false;
}

const app_list::AppListViewDelegate::Users&
AppListViewDelegate::GetUsers() const {
  return users_;
}

bool AppListViewDelegate::ShouldCenterWindow() const {
  return true;
}

}  // namespace athena