From 19ef27d7f3d3b4df0e4c45a4e88d1a63186ffb76 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 26 Feb 2017 14:25:43 +0100
Subject: {api/base,gui/options}-dialog: prevent closing without signal

Use hide() to avoid emitting idempotent events. There's isVisible() but
no isClosed() or equivalent. Worse yet, close() can return true twice in
a row, despite what docs for `bool QWidget::close()' say.
---
 api/plugin-api.cpp     | 10 +++++++++-
 api/plugin-api.hpp     |  2 ++
 gui/options-dialog.cpp | 14 ++++++++++++--
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/api/plugin-api.cpp b/api/plugin-api.cpp
index 1bf56200..100902eb 100644
--- a/api/plugin-api.cpp
+++ b/api/plugin-api.cpp
@@ -11,7 +11,13 @@ ITracker::~ITracker() {}
 ITrackerDialog::~ITrackerDialog() {}
 
 plugin_api::detail::BaseDialog::BaseDialog() {}
-void plugin_api::detail::BaseDialog::closeEvent(QCloseEvent*) { emit closing(); }
+
+void plugin_api::detail::BaseDialog::closeEvent(QCloseEvent*)
+{
+    if (isVisible())
+        emit closing();
+}
+
 Metadata::Metadata() {}
 IFilter::IFilter() {}
 IFilterDialog::IFilterDialog() {}
@@ -19,3 +25,5 @@ IProtocol::IProtocol() {}
 IProtocolDialog::IProtocolDialog() {}
 ITracker::ITracker() {}
 ITrackerDialog::ITrackerDialog() {}
+
+void plugin_api::detail::BaseDialog::done(int) { close(); hide(); }
diff --git a/api/plugin-api.hpp b/api/plugin-api.hpp
index e9de9dad..4c9dee2f 100644
--- a/api/plugin-api.hpp
+++ b/api/plugin-api.hpp
@@ -48,6 +48,8 @@ public:
     void closeEvent(QCloseEvent *) override;
 signals:
     void closing();
+private slots:
+    void done(int) override;
 };
 
 } // ns
diff --git a/gui/options-dialog.cpp b/gui/options-dialog.cpp
index 356d7cef..8e420a83 100644
--- a/gui/options-dialog.cpp
+++ b/gui/options-dialog.cpp
@@ -199,18 +199,28 @@ void OptionsDialog::bind_key(key_opts& kopts, QLabel* label)
 
 void OptionsDialog::doOK()
 {
+    if (!close()) // dialog was closed already
+        return;
+    if (isHidden()) // close() can return true twice in a row it seems
+        return;
+    hide();
+
     main.b->save();
     ui.game_detector->save();
     set_disable_translation_state(ui.disable_translation->isChecked());
-    close();
     emit closing();
 }
 
 void OptionsDialog::doCancel()
 {
+    if (!close()) // dialog was closed already
+        return;
+    if (isHidden()) // close() can return true twice in a row it seems
+        return;
+    hide();
+
     main.b->reload();
     ui.game_detector->revert();
-    close();
     emit closing();
 }
 
-- 
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