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// 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 "chrome/browser/ui/webui/copresence_ui_handler.h"
#include <map>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/i18n/time_formatting.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chrome/browser/extensions/api/copresence/copresence_api.h"
#include "components/copresence/proto/data.pb.h"
#include "components/copresence/public/copresence_manager.h"
#include "components/copresence/public/copresence_state.h"
#include "components/copresence/tokens.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "ui/base/l10n/time_format.h"
using base::ListValue;
using base::DictionaryValue;
using content::WebUI;
using copresence::Directive;
using copresence::ReceivedToken;
using copresence::TransmittedToken;
using extensions::CopresenceService;
// TODO(ckehoe): Make debug strings translatable?
namespace {
std::string FormatInstructionType(
copresence::TokenInstructionType directive_type) {
switch (directive_type) {
case copresence::TRANSMIT:
return "Transmit";
case copresence::RECEIVE:
return "Receive";
default:
NOTREACHED();
return "Unknown";
}
}
std::string FormatMedium(copresence::TokenMedium medium) {
switch (medium) {
case copresence::AUDIO_ULTRASOUND_PASSBAND:
return "Ultrasound";
case copresence::AUDIO_AUDIBLE_DTMF:
return "Audible";
default:
NOTREACHED();
return "Unknown";
}
}
std::string ConvertStatus(const TransmittedToken& token) {
bool done = token.stop_time < base::Time::Now();
std::string status = done ? "done" : "active";
if (token.broadcast_confirmed)
status += " confirmed";
return status;
}
std::string ConvertStatus(const ReceivedToken& token) {
switch (token.valid) {
case ReceivedToken::VALID:
return "valid";
case ReceivedToken::INVALID:
return "invalid";
case ReceivedToken::UNKNOWN:
return std::string();
default:
NOTREACHED();
return std::string();
}
}
template<class T>
scoped_ptr<DictionaryValue> FormatToken(const T& token) {
scoped_ptr<DictionaryValue> js_token(new DictionaryValue);
js_token->SetString("id", token.id);
js_token->SetString("statuses", ConvertStatus(token));
js_token->SetString("medium", FormatMedium(token.medium));
DCHECK(!token.start_time.is_null());
js_token->SetString("time",
base::TimeFormatTimeOfDay(token.start_time));
return js_token.Pass();
}
// Retrieve the CopresenceService, if any.
CopresenceService* GetCopresenceService(WebUI* web_ui) {
DCHECK(web_ui);
return CopresenceService::GetFactoryInstance()->Get(
web_ui->GetWebContents()->GetBrowserContext());
}
// Safely retrieve the CopresenceState, if any.
copresence::CopresenceState* GetCopresenceState(CopresenceService* service) {
// During shutdown, there may be no CopresenceService.
return service && service->manager() ? service->manager()->state() : nullptr;
}
// Safely retrieve the CopresenceState, if any. It would be cleaner if we could
// put this into CopresenceUIHandler and call WebUIMessageHandler::web_ui()
// instead of taking an argument. However, it turns out that web_ui() returns
// null when called in the constructor. So we pass in the web_ui explicitly.
copresence::CopresenceState* GetCopresenceState(WebUI* web_ui) {
return GetCopresenceState(GetCopresenceService(web_ui));
}
} // namespace
// Public functions.
CopresenceUIHandler::CopresenceUIHandler(WebUI* web_ui)
: state_(GetCopresenceState(web_ui)) {
DCHECK(state_);
state_->AddObserver(this);
}
CopresenceUIHandler::~CopresenceUIHandler() {
// Check if the CopresenceService is still up before unregistering.
state_ = GetCopresenceState(web_ui());
if (state_)
state_->RemoveObserver(this);
}
// Private functions.
void CopresenceUIHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"populateCopresenceState",
base::Bind(&CopresenceUIHandler::HandlePopulateState,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"clearCopresenceState",
base::Bind(&CopresenceUIHandler::HandleClearState,
base::Unretained(this)));
}
void CopresenceUIHandler::DirectivesUpdated() {
ListValue js_directives;
for (const Directive& directive : state_->active_directives()) {
scoped_ptr<DictionaryValue> js_directive(new DictionaryValue);
js_directive->SetString("type", FormatInstructionType(
directive.token_instruction().token_instruction_type()));
js_directive->SetString("medium", FormatMedium(
directive.token_instruction().medium()));
js_directive->SetString("duration", ui::TimeFormat::Simple(
ui::TimeFormat::FORMAT_DURATION,
ui::TimeFormat::LENGTH_LONG,
base::TimeDelta::FromMilliseconds(directive.ttl_millis())));
js_directives.Append(js_directive.release());
}
web_ui()->CallJavascriptFunction("refreshDirectives", js_directives);
}
void CopresenceUIHandler::TokenTransmitted(const TransmittedToken& token) {
web_ui()->CallJavascriptFunction("updateTransmittedToken",
*FormatToken(token));
}
void CopresenceUIHandler::TokenReceived(const ReceivedToken& token) {
web_ui()->CallJavascriptFunction("updateReceivedToken",
*FormatToken(token));
}
void CopresenceUIHandler::HandlePopulateState(const ListValue* args) {
DCHECK(args->empty());
DirectivesUpdated();
// TODO(ckehoe): Pass tokens to JS as a batch.
for (const auto& token_entry : state_->transmitted_tokens())
TokenTransmitted(token_entry.second);
for (const auto& token_entry : state_->received_tokens())
TokenReceived(token_entry.second);
}
void CopresenceUIHandler::HandleClearState(const ListValue* args) {
DCHECK(args->empty());
CopresenceService* service = GetCopresenceService(web_ui());
DCHECK(service);
service->ResetState();
// CopresenceService::ResetState() deletes the CopresenceState object
// we were using. We have to get the new one and reconnect to it.
state_ = GetCopresenceState(service);
DCHECK(state_);
state_->AddObserver(this);
web_ui()->CallJavascriptFunction("clearTokens");
DirectivesUpdated();
}
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