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/*
* Copyright (c) 2015, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "application_manager/application_state.h"
#include <algorithm>
#include "utils/logger.h"
#include "utils/macro.h"
namespace {
struct StateIDComparator {
application_manager::HmiState::StateID state_id_;
StateIDComparator(application_manager::HmiState::StateID state_id)
: state_id_(state_id) {}
bool operator()(const application_manager::HmiStatePtr cur) const {
return cur->state_id() == state_id_;
}
};
}
namespace application_manager {
CREATE_LOGGERPTR_GLOBAL(logger_, "ApplicationManager")
ApplicationState::ApplicationState() {}
void ApplicationState::InitState(HmiStatePtr state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
hmi_states_.clear();
hmi_states_.push_back(state);
}
void ApplicationState::AddState(HmiStatePtr state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
switch (state->state_id()) {
case HmiState::StateID::STATE_ID_REGULAR:
SetRegularState(state);
return;
case HmiState::StateID::STATE_ID_POSTPONED:
SetPostponedState(state);
return;
case HmiState::StateID::STATE_ID_CURRENT:
LOG4CXX_ERROR(logger_, "State of type '" << state << "' can't be added.");
return;
default:
AddHMIState(state);
break;
}
return;
}
void ApplicationState::RemoveState(HmiState::StateID state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
switch (state) {
case HmiState::StateID::STATE_ID_CURRENT:
case HmiState::StateID::STATE_ID_REGULAR:
LOG4CXX_ERROR(logger_,
"State of type '" << state << "'can't be removed.");
break;
case HmiState::StateID::STATE_ID_POSTPONED:
RemovePostponedState();
break;
default:
RemoveHMIState(state);
break;
}
}
HmiStatePtr ApplicationState::GetState(HmiState::StateID state_id) const {
LOG4CXX_AUTO_TRACE(logger_);
switch (state_id) {
case HmiState::StateID::STATE_ID_REGULAR:
LOG4CXX_DEBUG(logger_, "Getting regular state.");
return RegularHmiState();
case HmiState::StateID::STATE_ID_POSTPONED:
LOG4CXX_DEBUG(logger_, "Getting postponed state.");
return PostponedHmiState();
default:
LOG4CXX_DEBUG(logger_, "Getting current state.");
return CurrentHmiState();
}
}
void ApplicationState::AddHMIState(HmiStatePtr state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
HmiStates::iterator it = std::find_if(hmi_states_.begin(),
hmi_states_.end(),
StateIDComparator(state->state_id()));
if (hmi_states_.end() != it) {
LOG4CXX_WARN(
logger_,
"Hmi state with ID "
<< state->state_id()
<< "has been already applied to this application. Ignoring");
return;
}
hmi_states_.push_back(state);
}
void ApplicationState::RemoveHMIState(HmiState::StateID state_id) {
LOG4CXX_AUTO_TRACE(logger_);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
HmiStates::iterator it = std::find_if(
hmi_states_.begin(), hmi_states_.end(), StateIDComparator(state_id));
if (it == hmi_states_.end()) {
LOG4CXX_ERROR(logger_, "Unsuccesful remove HmiState: " << state_id);
return;
}
// unable to remove regular state
DCHECK_OR_RETURN_VOID(it != hmi_states_.begin());
HmiStates::iterator next = it;
HmiStates::iterator prev = it;
next++;
prev--;
if (next != hmi_states_.end()) {
HmiStatePtr next_state = *next;
HmiStatePtr prev_state = *prev;
next_state->set_parent(prev_state);
}
hmi_states_.erase(it);
}
void ApplicationState::RemovePostponedState() {
LOG4CXX_AUTO_TRACE(logger_);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN_VOID(!hmi_states_.empty());
StateIDComparator finder(HmiState::StateID::STATE_ID_POSTPONED);
HmiStates::iterator postponed_state =
std::find_if(hmi_states_.begin(), hmi_states_.end(), finder);
if (hmi_states_.end() == postponed_state) {
LOG4CXX_ERROR(logger_, "No postponed state is set for app.");
return;
}
hmi_states_.erase(postponed_state);
}
void ApplicationState::SetRegularState(HmiStatePtr state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
DCHECK_OR_RETURN_VOID(state->state_id() ==
HmiState::StateID::STATE_ID_REGULAR);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN_VOID(!hmi_states_.empty());
HmiStatePtr front_state = hmi_states_.front();
HmiState::StateID front_state_id = front_state->state_id();
if (HmiState::StateID::STATE_ID_POSTPONED == front_state_id) {
// Drop postponed state
hmi_states_.erase(hmi_states_.begin());
}
// Drop regular state
hmi_states_.erase(hmi_states_.begin());
if (!hmi_states_.empty()) {
HmiStatePtr front_state = hmi_states_.front();
front_state->set_parent(state);
}
hmi_states_.insert(hmi_states_.begin(), state);
if (HmiState::StateID::STATE_ID_POSTPONED == front_state_id) {
hmi_states_.insert(hmi_states_.begin(), front_state);
}
}
void ApplicationState::SetPostponedState(HmiStatePtr state) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(state);
DCHECK_OR_RETURN_VOID(state->state_id() ==
HmiState::StateID::STATE_ID_POSTPONED);
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN_VOID(!hmi_states_.empty());
HmiStatePtr front_state = hmi_states_.front();
if (front_state->state_id() == HmiState::StateID::STATE_ID_POSTPONED) {
hmi_states_.erase(hmi_states_.begin());
}
hmi_states_.insert(hmi_states_.begin(), state);
}
HmiStatePtr ApplicationState::CurrentHmiState() const {
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN(!hmi_states_.empty(), HmiStatePtr());
HmiStatePtr back_state = hmi_states_.back();
DCHECK_OR_RETURN(
back_state->state_id() != HmiState::StateID::STATE_ID_POSTPONED,
HmiStatePtr());
return back_state;
}
HmiStatePtr ApplicationState::RegularHmiState() const {
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN(!hmi_states_.empty(), HmiStatePtr());
HmiStates::const_iterator front_itr = hmi_states_.begin();
if ((*front_itr)->state_id() == HmiState::StateID::STATE_ID_POSTPONED) {
++front_itr;
}
return *front_itr;
}
HmiStatePtr ApplicationState::PostponedHmiState() const {
sync_primitives::AutoLock auto_lock(hmi_states_lock_);
DCHECK_OR_RETURN(!hmi_states_.empty(), HmiStatePtr());
HmiStatePtr front_state = hmi_states_.front();
return front_state->state_id() == HmiState::StateID::STATE_ID_POSTPONED
? front_state
: HmiStatePtr();
}
} // namespace application_manager
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