Add QMessageBox convenience classes

include/ui/message.h

@@ -0,0 +1,60 @@
+#pragma once
+#ifndef MESSAGE_H
+#define MESSAGE_H
+
+/*
+    These classes are thin wrappers around QMessageBox for convenience.
+    The base Message class is a regular window-modal QMessageBox with "porymap" as the window title.
+
+    QMessageBox's static functions enforce application modality (among other things), which changes the style of the message boxes on macOS.
+    With these equivalent static functions we have more control over the appearance and behavior of the window,
+    and we keep the convenience of not needing to provide all the arguments.
+
+    If more control is needed (like adding custom buttons to the window) use the constructors as you would for a normal QMessageBox.
+*/
+
+#include <QMessageBox>
+
+class Message : public QMessageBox {
+public:
+    Message(QMessageBox::Icon icon, const QString &text, QMessageBox::StandardButtons buttons, QWidget *parent);
+};
+
+// Basic error message with an 'Ok' button.
+class ErrorMessage : public Message {
+public:
+    ErrorMessage(const QString &message, QWidget *parent);
+    static int show(const QString &message, QWidget *parent);
+};
+
+// Basic warning message with an 'Ok' button.
+class WarningMessage : public Message {
+public:
+    WarningMessage(const QString &message, QWidget *parent);
+    static int show(const QString &message, QWidget *parent);
+};
+
+// Basic informational message with a 'Close' button.
+class InfoMessage : public Message {
+public:
+    InfoMessage(const QString &message, QWidget *parent);
+    static int show(const QString &message, QWidget *parent);
+};
+
+// Basic question message with a 'Yes' and 'No' button.
+class QuestionMessage : public Message {
+public:
+    QuestionMessage(const QString &message, QWidget *parent);
+    static int show(const QString &message, QWidget *parent);
+};
+
+// Error message directing users to their log file.
+// Shows the most recent error as detailed text.
+class RecentErrorMessage : public ErrorMessage {
+public:
+    RecentErrorMessage(const QString &message, QWidget *parent);
+    static int show(const QString &message, QWidget *parent);
+};
+
+
+#endif // MESSAGE_H