Close packet dialogs when reload Lua plugins.

We could keep the dialogs with the current content if postponing
proto_free_deregistered_fields() until all dialogs are closed.
This would give a feature where the user is able to compare packets
before and after a reload.

Or we could add functions in PacketDialog to reload the packet details
in all open dialogs.  This would give a feature to always have a
updated dialog for all interesting packets.

Change-Id: I805352b65844eafafafc54cd61f08b4605416e64
Reviewed-on: https://code.wireshark.org/review/10201
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

ui/qt/main_window.h

@@ -138,6 +138,7 @@ private:
     QActionGroup *time_display_actions_;
     QActionGroup *time_precision_actions_;
     FunnelStatistics *funnel_statistics_;
+    QList<QDialog *> packet_dialogs_;
 
     bool capture_stopping_;
     bool capture_filter_valid_;
@@ -239,6 +240,7 @@ public slots:
     void captureFileSaveStarted(const QString &file_path);
 
     void filterExpressionsChanged();
+    void packetDialogClosed(QDialog *);
 
 private slots:
     // Manually connected slots (no "on_<object>_<signal>").
@@ -387,6 +389,7 @@ private slots:
     void on_actionViewResizeColumns_triggered();
 
     void openPacketDialog(bool from_reference = false);
+    void closePacketDialogs();
     void on_actionViewShowPacketInNewWindow_triggered();
     void on_actionContextShowLinkedPacketInNewWindow_triggered();
     void on_actionViewReload_triggered();

ui/qt/main_window_slots.cpp

@@ -2294,12 +2294,28 @@ void MainWindow::openPacketDialog(bool from_reference)
 
         connect(this, SIGNAL(monospaceFontChanged(QFont)),
                 packet_dialog, SIGNAL(monospaceFontChanged(QFont)));
+        connect(packet_dialog, SIGNAL(packetDialogClosed(QDialog *)),
+                this, SLOT(packetDialogClosed(QDialog *)));
         zoomText(); // Emits monospaceFontChanged
 
+        packet_dialogs_.append(packet_dialog);
         packet_dialog->show();
     }
 }
 
+void MainWindow::closePacketDialogs()
+{
+    QList<QDialog *> packet_dialogs_copy(packet_dialogs_);
+    foreach(QDialog *packet_dialog, packet_dialogs_copy) {
+        packet_dialog->close();
+    }
+}
+
+void MainWindow::packetDialogClosed(QDialog *packet_dialog)
+{
+    packet_dialogs_.removeOne(packet_dialog);
+}
+
 void MainWindow::on_actionViewShowPacketInNewWindow_triggered()
 {
     openPacketDialog();
@@ -2489,6 +2505,7 @@ void MainWindow::on_actionAnalyzeReloadLuaPlugins_triggered()
     wslua_reload_plugins(NULL, NULL);
     funnel_statistics_reload_menus();
     reloadDynamicMenus();
+    closePacketDialogs();
 
     // Preferences may have been deleted so close all widgets using prefs
     proto_tree_->closeContextMenu();

ui/qt/packet_dialog.cpp

@@ -120,6 +120,18 @@ PacketDialog::~PacketDialog()
     g_free(packet_data_);
 }
 
+void PacketDialog::accept()
+{
+    emit packetDialogClosed(this);
+    WiresharkDialog::accept();
+}
+
+void PacketDialog::reject()
+{
+    emit packetDialogClosed(this);
+    WiresharkDialog::reject();
+}
+
 void PacketDialog::captureFileClosing()
 {
     delete byte_view_tab_;

ui/qt/packet_dialog.h

@@ -44,6 +44,7 @@ public:
 
 signals:
     void monospaceFontChanged(QFont);
+    void packetDialogClosed(QDialog *);
 
 private slots:
     void captureFileClosing();
@@ -52,6 +53,9 @@ private slots:
     void on_buttonBox_helpRequested();
 
 private:
+    void accept();
+    void reject();
+
     Ui::PacketDialog *ui;
 
     QString col_info_;