add redirect page.

WebApplication/Application.cpp

@@ -5,6 +5,7 @@
 #include "HomePage.h"
 #include "LoginPage.h"
 #include "NavigationBar.h"
+#include "RedirectPage.h"
 #include "Restful.h"
 #include "VisitorRecordsPage.h"
 #include "model/AuthModel.h"
@@ -154,6 +155,9 @@ void Application::handlePathChange(const std::string &path) {
     if (path.starts_with("/wt/login")) {
         if (m_session->login().loggedIn()) {
             LOG(info) << "already logged in.";
+            m_root->clear();
+            auto p = m_root->addNew<RedirectPage>();
+            p->setRedirect("/", "您已经登录...");
         } else {
             if (m_loginPage) {
                 m_root->clear();
@@ -170,6 +174,10 @@ void Application::handlePathChange(const std::string &path) {
         } else if (path.starts_with("/wt/visitor/analysis")) {
             m_root->clear();
             m_root->addNew<VisitorRecordsPage>(*m_session);
+        } else if (path.starts_with("/wt/redirect")) {
+            m_root->clear();
+            auto p = m_root->addNew<RedirectPage>();
+            p->setRedirect("/", "您已经登录...");
         } else {
             m_root->clear();
             m_root->addNew<HomePage>();

WebApplication/CMakeLists.txt

@@ -6,6 +6,7 @@ add_library(WebApplication
     HomePage.h HomePage.cpp
     LoginPage.h LoginPage.cpp
     NavigationBar.h NavigationBar.cpp
+    RedirectPage.h RedirectPage.cpp
     VisitorRecordsPage.h VisitorRecordsPage.cpp
     Restful.h Restful.cpp
     Dialog.h Dialog.cpp

WebApplication/RedirectPage.cpp

@@ -0,0 +1,37 @@
+#include "RedirectPage.h"
+#include "BoostLog.h"
+#include <Wt/WTimer.h>
+
+constexpr auto Template = R"(
+<p>${message}</p>
+<div>您将在${seconds}秒后返回上一页。</div>
+)";
+
+RedirectPage::RedirectPage() : Wt::WTemplate(Template) {
+    m_timer = addChild(std::make_unique<Wt::WTimer>());
+    m_timer->setInterval(std::chrono::milliseconds(1000));
+    m_timer->timeout().connect(this, &RedirectPage::onTimeout);
+    m_timer->start();
+    bindInt("seconds", m_time / 1000);
+}
+
+void RedirectPage::setRedirect(const std::string &path, const std::string &message) {
+    bindString("message", message);
+    if (m_redirect != path) {
+        m_redirect = path;
+    }
+}
+
+void RedirectPage::onTimeout() {
+    m_time -= 1000;
+    bindInt("seconds", m_time / 1000);
+    if (m_time <= 0) {
+        m_timer->stop();
+        auto app = Wt::WApplication::instance();
+        if (m_redirect.starts_with("/wt")) {
+            app->setInternalPath(m_redirect, true);
+        } else {
+            app->redirect(m_redirect);
+        }
+    }
+}

WebApplication/RedirectPage.h

@@ -0,0 +1,20 @@
+#ifndef __REDIRECTPAGE_H__
+#define __REDIRECTPAGE_H__
+
+#include <Wt/WTemplate.h>
+
+class RedirectPage : public Wt::WTemplate {
+public:
+    RedirectPage();
+    void setRedirect(const std::string &path, const std::string &message);
+
+protected:
+    void onTimeout();
+
+private:
+    Wt::WTimer *m_timer = nullptr;
+    int m_time = 5000;
+    std::string m_redirect;
+};
+
+#endif // __REDIRECTPAGE_H__