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#include <Wt/WBootstrap5Theme.h>
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#include <Wt/WDialog.h>
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#include <Wt/WEnvironment.h>
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#include <Wt/WHBoxLayout.h>
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#include <Wt/WPushButton.h>
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#include <Wt/WServer.h>
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#include <Wt/WVBoxLayout.h>
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#include <Wt/WWidgetItem.h>
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class GridApplication : public Wt::WApplication
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{
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public:
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GridApplication(const Wt::WEnvironment &env) : Wt::WApplication(env)
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{
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auto appTheme = std::make_shared<Wt::WBootstrap5Theme>();
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setTheme(appTheme);
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auto layout = root()->setLayout(std::make_unique<Wt::WVBoxLayout>());
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auto hLayout = layout->addLayout(std::make_unique<Wt::WHBoxLayout>());
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auto button = hLayout->addWidget(std::make_unique<Wt::WPushButton>("Replace Host Container"));
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auto button2 = hLayout->addWidget(std::make_unique<Wt::WPushButton>("Replace Content Container"));
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auto container = buildContainer();
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replaceHostContainer(layout, std::move(container));
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button->clicked().connect([this, layout]() {
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auto container = buildContainer();
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std::cout << "Replace Host Container" << std::endl;
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replaceHostContainer(layout, std::move(container));
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});
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button2->clicked().connect([this, layout]() {
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auto container = buildContainer();
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std::cout << "Replace Content Container" << std::endl;
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// replaceContentContainer(layout, std::move(container));
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replaceContentContainerVariante2();
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// layout->setStretchFactor(m_hostContainer, 1);
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});
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}
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private:
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void replaceHostContainer(Wt::WVBoxLayout *layout, std::unique_ptr<Wt::WContainerWidget> container)
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{
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if (m_hostContainer != nullptr)
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{
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m_hostContainer->removeFromParent();
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m_hostContainer = nullptr;
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}
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m_hostContainer = layout->addWidget(std::make_unique<Wt::WContainerWidget>(), 1);
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auto hostLayout = m_hostContainer->setLayout(std::make_unique<Wt::WVBoxLayout>());
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m_contentContainer = hostLayout->addWidget(std::move(container), 1);
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}
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void replaceContentContainer(Wt::WVBoxLayout *layout, std::unique_ptr<Wt::WContainerWidget> container)
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{
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if (m_hostContainer == nullptr)
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{
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m_hostContainer = layout->addWidget(std::move(container), 1);
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}
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if (m_contentContainer != nullptr)
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{
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m_contentContainer->removeFromParent();
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m_contentContainer = nullptr;
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}
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m_contentContainer = m_hostContainer->addWidget(std::move(container));
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}
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void replaceContentContainerVariante2()
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{
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auto layout = m_contentContainer->layout();
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while (layout->count() > 0)
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{
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auto widget = layout->itemAt(0)->widget();
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layout->removeWidget(widget);
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}
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buildVBoxLayout(m_contentContainer, false);
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}
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void buildVBoxLayout(Wt::WContainerWidget *container, bool setLayout = true)
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{
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Wt::WVBoxLayout *vboxLayout = nullptr;
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if (setLayout)
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vboxLayout = container->setLayout(std::make_unique<Wt::WVBoxLayout>());
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else
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vboxLayout = dynamic_cast<Wt::WVBoxLayout *>(container->layout());
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for (int i = 0; i < 4; i++)
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{
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int number = std::rand() % 10;
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vboxLayout->addWidget(std::make_unique<Wt::WText>("Text" + std::to_string(number)));
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}
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}
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void buildGridLayout(Wt::WContainerWidget *container)
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{
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auto gridLayout = container->setLayout(std::make_unique<Wt::WGridLayout>());
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for (int i = 0; i < 4; i++)
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{
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int number = std::rand() % 10;
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gridLayout->addWidget(
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std::make_unique<Wt::WText>("Text" + std::to_string(number)),
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i,
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0,
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Wt::AlignmentFlag::Justify | Wt::AlignmentFlag::Top);
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gridLayout->addWidget(
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std::make_unique<Wt::WText>("Value" + std::to_string(number)),
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i,
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1,
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Wt::AlignmentFlag::Justify | Wt::AlignmentFlag::Top);
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}
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}
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std::unique_ptr<Wt::WContainerWidget> buildContainer()
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{
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auto container = std::make_unique<Wt::WContainerWidget>();
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buildVBoxLayout(container.get());
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return container;
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}
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Wt::WContainerWidget *m_hostContainer = nullptr;
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Wt::WContainerWidget *m_contentContainer = nullptr;
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};
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std::unique_ptr<Wt::WApplication> createApplication(const Wt::WEnvironment &env)
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{
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auto app = std::make_unique<GridApplication>(env);
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return app;
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}
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int main(int argc, char **argv)
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{
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try
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{
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Wt::WServer server(argc, argv, WTHTTP_CONFIGURATION);
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server.addEntryPoint(Wt::EntryPointType::Application, std::bind(createApplication, std::placeholders::_1));
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// Wt::WLayout::setDefaultImplementation(Wt::LayoutImplementation::JavaScript);
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server.run();
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}
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catch (Wt::WException &e)
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{
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std::cerr << "Exception: " << e.what() << std::endl;
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}
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}
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