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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "GUIDialogBusy.h"
#include "ServiceBroker.h"
#include "guilib/GUIComponent.h"
#include "guilib/GUIWindowManager.h"
#include "threads/IRunnable.h"
#include "threads/Thread.h"
#include "utils/log.h"
using namespace std::chrono_literals;
class CBusyWaiter : public CThread
{
std::shared_ptr<CEvent> m_done;
IRunnable *m_runnable;
public:
explicit CBusyWaiter(IRunnable *runnable) :
CThread(runnable, "waiting"), m_done(new CEvent()), m_runnable(runnable) { }
~CBusyWaiter() override { StopThread(); }
bool Wait(unsigned int displaytime, bool allowCancel)
{
std::shared_ptr<CEvent> e_done(m_done);
Create();
auto start = std::chrono::steady_clock::now();
if (!CGUIDialogBusy::WaitOnEvent(*e_done, displaytime, allowCancel))
{
m_runnable->Cancel();
auto end = std::chrono::steady_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
unsigned int remaining =
(duration.count() >= displaytime) ? 0 : displaytime - duration.count();
CGUIDialogBusy::WaitOnEvent(*e_done, remaining, false);
return false;
}
return true;
}
// 'this' is actually deleted from the thread where it's on the stack
void Process() override
{
std::shared_ptr<CEvent> e_done(m_done);
CThread::Process();
(*e_done).Set();
}
};
bool CGUIDialogBusy::Wait(IRunnable *runnable, unsigned int displaytime, bool allowCancel)
{
if (!runnable)
return false;
CBusyWaiter waiter(runnable);
if (!waiter.Wait(displaytime, allowCancel))
{
return false;
}
return true;
}
bool CGUIDialogBusy::WaitOnEvent(CEvent &event, unsigned int displaytime /* = 100 */, bool allowCancel /* = true */)
{
bool cancelled = false;
if (!event.Wait(std::chrono::milliseconds(displaytime)))
{
// throw up the progress
CGUIDialogBusy* dialog = CServiceBroker::GetGUI()->GetWindowManager().GetWindow<CGUIDialogBusy>(WINDOW_DIALOG_BUSY);
if (dialog)
{
if (dialog->IsDialogRunning())
{
CLog::Log(LOGFATAL, "Logic error due to two concurrent busydialogs, this is a known issue. "
"The application will exit.");
throw std::logic_error("busy dialog already running");
}
dialog->Open();
while (!event.Wait(1ms))
{
dialog->ProcessRenderLoop(false);
if (allowCancel && dialog->IsCanceled())
{
cancelled = true;
break;
}
}
dialog->Close(true);
}
}
return !cancelled;
}
CGUIDialogBusy::CGUIDialogBusy(void)
: CGUIDialog(WINDOW_DIALOG_BUSY, "DialogBusy.xml", DialogModalityType::MODAL)
{
m_loadType = LOAD_ON_GUI_INIT;
m_bCanceled = false;
}
CGUIDialogBusy::~CGUIDialogBusy(void) = default;
void CGUIDialogBusy::Open_Internal(bool bProcessRenderLoop, const std::string& param /* = "" */)
{
m_bCanceled = false;
m_bLastVisible = true;
CGUIDialog::Open_Internal(false, param);
}
void CGUIDialogBusy::DoProcess(unsigned int currentTime, CDirtyRegionList &dirtyregions)
{
bool visible = CServiceBroker::GetGUI()->GetWindowManager().IsModalDialogTopmost(WINDOW_DIALOG_BUSY);
if(!visible && m_bLastVisible)
dirtyregions.push_back(CDirtyRegion(m_renderRegion));
m_bLastVisible = visible;
CGUIDialog::DoProcess(currentTime, dirtyregions);
}
void CGUIDialogBusy::Render()
{
if(!m_bLastVisible)
return;
CGUIDialog::Render();
}
bool CGUIDialogBusy::OnBack(int actionID)
{
m_bCanceled = true;
return true;
}
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