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// Copyright (c) 2010 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/dom_ui/foreign_session_handler.h"
#include "base/scoped_vector.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/dom_ui/value_helper.h"
#include "chrome/browser/sessions/session_restore.h"
#include "chrome/browser/sessions/tab_restore_service.h"
#include "chrome/browser/sync/engine/syncapi.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_service.h"
namespace browser_sync {
static const int kMaxSessionsToShow = 10;
ForeignSessionHandler::ForeignSessionHandler() {
Init();
}
void ForeignSessionHandler::RegisterMessages() {
dom_ui_->RegisterMessageCallback("getForeignSessions",
NewCallback(this,
&ForeignSessionHandler::HandleGetForeignSessions));
dom_ui_->RegisterMessageCallback("reopenForeignSession",
NewCallback(this,
&ForeignSessionHandler::HandleReopenForeignSession));
}
void ForeignSessionHandler::Init() {
registrar_.Add(this, NotificationType::SYNC_CONFIGURE_DONE,
NotificationService::AllSources());
registrar_.Add(this, NotificationType::FOREIGN_SESSION_UPDATED,
NotificationService::AllSources());
registrar_.Add(this, NotificationType::FOREIGN_SESSION_DELETED,
NotificationService::AllSources());
}
void ForeignSessionHandler::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type != NotificationType::SYNC_CONFIGURE_DONE &&
type != NotificationType::FOREIGN_SESSION_UPDATED &&
type != NotificationType::FOREIGN_SESSION_DELETED) {
NOTREACHED();
return;
}
ListValue list_value;
HandleGetForeignSessions(&list_value);
}
SessionModelAssociator* ForeignSessionHandler::GetModelAssociator() {
ProfileSyncService* service = dom_ui_->GetProfile()->GetProfileSyncService();
if (service == NULL)
return NULL;
// We only want to set the model associator if there is one, and it is done
// syncing sessions.
SessionModelAssociator* model_associator = service->
GetSessionModelAssociator();
if (model_associator == NULL ||
!service->ShouldPushChanges()) {
return NULL;
}
return dom_ui_->GetProfile()->GetProfileSyncService()->
GetSessionModelAssociator();
}
void ForeignSessionHandler::HandleGetForeignSessions(const Value* content) {
SessionModelAssociator* associator = GetModelAssociator();
if (associator)
GetForeignSessions(associator);
}
void ForeignSessionHandler::HandleReopenForeignSession(
const Value* content) {
// Extract the machine tag and use it to obtain the id for the node we are
// looking for. Send it along with a valid associator to OpenForeignSessions.
if (content->GetType() == Value::TYPE_LIST) {
const ListValue* list_value = static_cast<const ListValue*>(content);
Value* list_member;
if (list_value->Get(0, &list_member) &&
list_member->GetType() == Value::TYPE_STRING) {
const StringValue* string_value =
static_cast<const StringValue*>(list_member);
std::string session_string_value;
if (string_value->GetAsString(&session_string_value)) {
SessionModelAssociator* associator = GetModelAssociator();
if (associator) {
int64 id = associator->GetSyncIdFromChromeId(session_string_value);
OpenForeignSession(associator, id);
}
}
}
}
}
void ForeignSessionHandler::OpenForeignSession(
SessionModelAssociator* associator, int64 id) {
// Obtain the session windows for the foreign session.
// We don't have a ForeignSessionHandler in off the record mode, so we
// expect the ProfileSyncService to exist.
sync_api::ReadTransaction trans(dom_ui_->GetProfile()->
GetProfileSyncService()->backend()->GetUserShareHandle());
ScopedVector<ForeignSession> session;
associator->AppendForeignSessionWithID(id, &session.get(), &trans);
DCHECK(session.size() == 1);
std::vector<SessionWindow*> windows = (*session.begin())->windows;
SessionRestore::RestoreForeignSessionWindows(dom_ui_->GetProfile(), &windows);
}
void ForeignSessionHandler::GetForeignSessions(
SessionModelAssociator* associator) {
ScopedVector<ForeignSession> windows;
associator->GetSessionDataFromSyncModel(&windows.get());
int added_count = 0;
ListValue list_value;
for (std::vector<ForeignSession*>::const_iterator i =
windows.begin(); i != windows.end() &&
added_count < kMaxSessionsToShow; ++i) {
ForeignSession* foreign_session = *i;
std::vector<TabRestoreService::Entry*> entries;
dom_ui_->GetProfile()->GetTabRestoreService()->CreateEntriesFromWindows(
&foreign_session->windows, &entries);
for (std::vector<TabRestoreService::Entry*>::const_iterator it =
entries.begin(); it != entries.end(); ++it) {
TabRestoreService::Entry* entry = *it;
scoped_ptr<DictionaryValue> value(new DictionaryValue());
if (entry->type == TabRestoreService::WINDOW &&
ValueHelper::WindowToValue(
*static_cast<TabRestoreService::Window*>(entry), value.get())) {
// The javascript checks if the session id is a valid session id,
// when rendering session information to the new tab page, and it
// sends the sessionTag back when we need to restore a session.
value->SetString("sessionTag", foreign_session->foreign_tession_tag);
value->SetInteger("sessionId", entry->id);
list_value.Append(value.release()); // Give ownership to |list_value|.
}
}
added_count++;
}
dom_ui_->CallJavascriptFunction(L"foreignSessions", list_value);
}
} // namespace browser_sync
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