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// Copyright 2016 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/physical_web/webui/physical_web_base_message_handler.h"
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/user_metrics.h"
#include "components/physical_web/data_source/physical_web_data_source.h"
#include "components/physical_web/webui/physical_web_ui_constants.h"
namespace physical_web_ui {
PhysicalWebBaseMessageHandler::PhysicalWebBaseMessageHandler()
: data_source_(nullptr) {}
PhysicalWebBaseMessageHandler::~PhysicalWebBaseMessageHandler() {
if (data_source_)
data_source_->UnregisterListener(this);
}
void PhysicalWebBaseMessageHandler::OnFound(const GURL& url) {
PushNearbyURLs();
}
void PhysicalWebBaseMessageHandler::OnLost(const GURL& url) {
// do nothing
}
void PhysicalWebBaseMessageHandler::OnDistanceChanged(
const GURL& url,
double distance_estimate) {
// do nothing
}
void PhysicalWebBaseMessageHandler::RegisterMessages() {
RegisterMessageCallback(
kPhysicalWebPageLoaded,
base::BindRepeating(
&PhysicalWebBaseMessageHandler::HandlePhysicalWebPageLoaded,
base::Unretained(this)));
RegisterMessageCallback(
kPhysicalWebItemClicked,
base::BindRepeating(
&PhysicalWebBaseMessageHandler::HandlePhysicalWebItemClicked,
base::Unretained(this)));
data_source_ = GetPhysicalWebDataSource();
if (data_source_)
data_source_->RegisterListener(this, physical_web::OPPORTUNISTIC);
}
void PhysicalWebBaseMessageHandler::PushNearbyURLs() {
base::DictionaryValue results;
std::unique_ptr<physical_web::MetadataList> metadata_list =
GetPhysicalWebDataSource()->GetMetadataList();
// Append new metadata at the end of the list.
for (const auto& metadata_list_item : *metadata_list) {
const std::string& group_id = metadata_list_item.group_id;
if (metadata_map_.find(group_id) == metadata_map_.end()) {
ordered_group_ids_.push_back(group_id);
metadata_map_.insert(std::make_pair(group_id, metadata_list_item));
}
}
auto metadata = std::make_unique<base::ListValue>();
int index = 0;
for (const auto& group_id : ordered_group_ids_) {
auto metadata_list_item = metadata_map_[group_id];
auto metadata_item = std::make_unique<base::DictionaryValue>();
metadata_item->SetString(physical_web_ui::kResolvedUrl,
metadata_list_item.resolved_url.spec());
metadata_item->SetString(physical_web_ui::kPageInfoIcon,
metadata_list_item.icon_url.spec());
metadata_item->SetString(physical_web_ui::kPageInfoTitle,
metadata_list_item.title);
metadata_item->SetString(physical_web_ui::kPageInfoDescription,
metadata_list_item.description);
// Add the item index so when an item is selected, the index can be recorded
// in a UMA histogram.
metadata_item->SetInteger(physical_web_ui::kIndex, index);
metadata->Append(std::move(metadata_item));
++index;
}
results.Set(physical_web_ui::kMetadata, std::move(metadata));
// Pass the list of Physical Web URL metadata to the WebUI. A jstemplate will
// create a list view with an item for each URL.
CallJavaScriptFunction(physical_web_ui::kPushNearbyUrls, results);
}
void PhysicalWebBaseMessageHandler::HandlePhysicalWebPageLoaded(
const base::ListValue* args) {
PushNearbyURLs();
UMA_HISTOGRAM_EXACT_LINEAR("PhysicalWeb.TotalUrls.OnInitialDisplay",
(int)ordered_group_ids_.size(), 50);
}
void PhysicalWebBaseMessageHandler::HandlePhysicalWebItemClicked(
const base::ListValue* args) {
int index = 0;
if (!args->GetInteger(0, &index)) {
DLOG(ERROR) << "Invalid selection index";
return;
}
// Record the index of the selected item.
UMA_HISTOGRAM_EXACT_LINEAR("PhysicalWeb.WebUI.ListViewUrlPosition", index,
50);
// Count the number of selections.
base::RecordAction(
base::UserMetricsAction("PhysicalWeb.WebUI.ListViewUrlSelected"));
}
} // namespace physical_web_ui
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