Calendar: Add ability to view events

Userland/Applications/Calendar/ViewEventDialog.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2024, Sanil Gupta <sanilg566@gmail.com>.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include "EventManager.h"
+#include <LibGUI/Calendar.h>
+#include <LibGUI/Dialog.h>
+#include <LibGUI/Window.h>
+
+namespace Calendar {
+
+class ViewEventDialog final : public GUI::Dialog {
+    C_OBJECT(ViewEventDialog)
+public:
+    virtual ~ViewEventDialog() override = default;
+
+    static void show(Core::DateTime date, EventManager& event_manager, Window* parent_window = nullptr)
+    {
+        auto dialog = ViewEventDialog::construct(date, event_manager, parent_window);
+        dialog->exec();
+    }
+    void close_and_open_add_event_dialog();
+
+private:
+    ViewEventDialog(Core::DateTime, EventManager&, Window*);
+    void update_events();
+
+    EventManager& m_event_manager;
+    Core::DateTime m_date_time;
+
+    Vector<Event> m_events;
+};
+
+}