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#ifndef _DEBUG
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#pragma comment(lib, "wt.lib")
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#pragma comment(lib, "wthttp.lib")
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#else
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#pragma comment(lib, "wtd.lib")
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#pragma comment(lib, "wthttpd.lib")
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#endif
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#include <Wt/WServer.h>
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#include <Wt/WApplication.h>
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#include <Wt/WContainerWidget.h>
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#include <Wt/WText.h>
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#include <Wt/WVBoxLayout.h>
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#include <Wt/WCompositeWidget.h>
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#include <Wt/WPushButton.h>
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#include <Wt/WDialog.h>
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#include <iostream>
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#include <memory>
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#include <thread>
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#include <random>
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#include <atomic>
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#include <vector>
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// CMD:
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// C:> server.exe --http-address 0.0.0.0 --docroot C:\Users\user\source\repos\emweb\wt-install\share\Wt
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class MyApp : public Wt::WApplication {
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private:
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Wt::WText* text{};
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std::atomic<int> count{};
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int dlgCount{};
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std::vector<std::thread> threads;
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public:
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static std::unique_ptr<Wt::WApplication> CreateApp (const Wt::WEnvironment& env)
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{
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return std::make_unique<MyApp>(env);
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}
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void OpenDialog ()
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{
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auto dlg = addChild(std::make_unique<Wt::WDialog>("This dialog should be unique, but it's count is: " + std::to_string(++dlgCount)));
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dlg->resize(450, -1);
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dlg->setModal(true);
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dlg->setClosable(true);
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dlg->finished().connect([&] () { removeChild(dlg); --dlgCount; });
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dlg->show();
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}
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void Work ()
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{
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const auto sessionid = wApp->sessionId();
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const auto finishcb = bindSafe([&] () {
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std::this_thread::sleep_for(std::chrono::seconds(5)); // simulate a slow responding server
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if (--count == 0) {
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text->setText("done");
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}
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else {
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text->setText("loading: " + std::to_string(count));
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}
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wApp->triggerUpdate();
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wApp->enableUpdates(false);
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});
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constexpr int CONCURRENCY = 1;
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for (int i = 0; i < CONCURRENCY; ++i) {
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++count;
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wApp->enableUpdates(true);
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threads.push_back(std::thread{[sessionid, finishcb] () {
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Wt::WServer::instance()->post(sessionid, finishcb);
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}});
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}
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}
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~MyApp ()
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{
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for (auto& t: threads) {
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t.join();
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}
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}
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MyApp (const Wt::WEnvironment& env)
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: Wt::WApplication(env)
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{
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auto layout = root()->setLayout(std::make_unique<Wt::WVBoxLayout>());
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auto btn = layout->addWidget(std::make_unique<Wt::WPushButton>("open dialog"));
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btn->clicked().connect(this, &MyApp::OpenDialog);
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text = layout->addWidget(std::make_unique<Wt::WText>("warming up, smash dialog button to produce error!"));
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layout->addStretch(1);
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Work();
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}
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};
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int main(int argc, char** argv)
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try {
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Wt::WServer wserver{argc, argv};
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wserver.addEntryPoint(Wt::EntryPointType::Application, &MyApp::CreateApp);
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wserver.run();
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return wserver.waitForShutdown();
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}
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catch (std::exception& e) {
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std::cerr << e.what() << std::endl;
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return EXIT_FAILURE;
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}
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