1 files changed, 63 insertions, 0 deletions
diff --git a/src/gui_qt.cc b/src/gui_qt.cc
index 17eda8f..9ffdfc9 100644
--- a/src/gui_qt.cc
+++ b/src/gui_qt.cc
@@ -46,6 +46,7 @@
 #include "gui_listmodel.hh"
 #include "gui_main.hh"
 #include "gui_menu.hh"
+#include "gui_message.hh"
 #include "gui_statusbar.hh"
 #include "gui_textwnd.hh"
 #include "looper.hh"
@@ -1334,6 +1335,61 @@ private:
   bool applied_;
 };
 
+class QtGuiMessage : public virtual GuiMessage, public QtGuiWindow {
+public:
+  QtGuiMessage(Type type, std::string const& title, std::string const& text)
+    : type_(type), title_(title), text_(text) {
+  }
+
+  void add_listener(GuiMessage::Listener* listener) override {
+    observers_.insert(listener);
+  }
+
+  void remove_listener(GuiMessage::Listener* listener) override {
+    observers_.erase(listener);
+  }
+
+  void set_title(std::string const& title) override {
+    title_ = title;
+  }
+  std::string const& title() const override {
+    return title_;
+  }
+
+  void* impl() const override {
+    return QtGuiWindow::impl();
+  }
+
+  bool showWidget() override {
+    show(QApplication::activeWindow());
+    return true;
+  }
+
+  void show(GuiWindow* parent) override {
+    auto wnd = static_cast<QtGuiWindow*>(parent->impl());
+    show(wnd->widget());
+  }
+
+protected:
+  void show(QWidget* parent) {
+    switch (type_) {
+    case ERROR:
+      QMessageBox::critical(parent, QString::fromStdString(title_),
+                            QString::fromStdString(text_));
+      break;
+    case OTHER:
+      QMessageBox::information(parent, QString::fromStdString(title_),
+                               QString::fromStdString(text_));
+      break;
+    }
+  }
+
+  Type type_;
+  std::string title_;
+  std::string text_;
+  Observers<GuiMessage::Listener*> observers_;
+};
+
 class OptionalCloseWidget : public QWidget {
 public:
   class Delegate {
@@ -1733,6 +1789,13 @@ GuiFormApply* GuiFormApply::create(std::string const& title,
 }
 
 // static
+GuiMessage* GuiMessage::create(Type type,
+                               std::string const& title,
+                               std::string const& text) {
+  return new QtGuiMessage(type, title, text);
+}
+
+// static
 Looper* GuiMain::createLooper() {
   return new QtLooper();
 }