Make Ctrl-Q accelerator user-configurable

Some devices, such as those using virtual keyboards such as Squeekboard,
might find the Ctrl-Q accelerator annoying, as it can be easily
mistyped.

libdino/src/entity/settings.vala

@@ -15,6 +15,7 @@ public class Settings : Object {
         default_encryption = col_to_encryption_or_default("default_encryption", Encryption.OMEMO);
         send_button = col_to_bool_or_default("send_button", false);
         enter_newline = col_to_bool_or_default("enter_newline", false);
+        quit_ctrl_q = col_to_bool_or_default("quit_ctrl_q", true);
     }
 
     private bool col_to_bool_or_default(string key, bool def) {
@@ -126,6 +127,20 @@ public class Settings : Object {
             enter_newline_ = value;
         }
     }
+
+    public signal void quit_ctrl_q_update(bool active);
+    private bool quit_ctrl_q_;
+    public bool quit_ctrl_q {
+        get { return quit_ctrl_q_; }
+        set {
+            db.settings.upsert()
+                .value(db.settings.key, "quit_ctrl_q", true)
+                .value(db.settings.value, value.to_string())
+                .perform();
+            quit_ctrl_q_ = value;
+            quit_ctrl_q_update(value);
+        }
+    }
 }
 
 }

main/data/settings_dialog.ui

@@ -172,6 +172,18 @@
                                 <property name="height">1</property>
                             </packing>
                         </child>
+                        <child>
+                            <object class="GtkCheckButton" id="quit_ctrl_q_checkbutton">
+                                <property name="label" translatable="yes">Quit Dino with Ctrl+Q</property>
+                                <property name="visible">True</property>
+                            </object>
+                            <packing>
+                                <property name="left_attach">0</property>
+                                <property name="top_attach">8</property>
+                                <property name="width">1</property>
+                                <property name="height">1</property>
+                            </packing>
+                        </child>
                     </object>
                 </child>
             </object>

main/src/ui/application.vala

@@ -117,6 +117,8 @@ public class Dino.Ui.Application : Gtk.Application, Dino.Application {
     }
 
     private void create_actions() {
+        Dino.Entities.Settings settings = Dino.Application.get_default().settings;
+
         SimpleAction accounts_action = new SimpleAction("accounts", null);
         accounts_action.activate.connect(show_accounts_window);
         add_action(accounts_action);
@@ -132,7 +134,20 @@ public class Dino.Ui.Application : Gtk.Application, Dino.Application {
         SimpleAction quit_action = new SimpleAction("quit", null);
         quit_action.activate.connect(quit);
         add_action(quit_action);
-        set_accels_for_action("app.quit", KEY_COMBINATION_QUIT);
+
+        if (settings.quit_ctrl_q) {
+            set_accels_for_action("app.quit", KEY_COMBINATION_QUIT);
+        }
+
+        settings.quit_ctrl_q_update.connect((active) =>
+        {
+            if (active) {
+                set_accels_for_action("app.quit", KEY_COMBINATION_QUIT);
+            }
+            else {
+                set_accels_for_action("app.quit", {null});
+            }
+        });
 
         SimpleAction open_conversation_action = new SimpleAction("open-conversation", VariantType.INT32);
         open_conversation_action.activate.connect((variant) => {

main/src/ui/settings_dialog.vala

@@ -16,6 +16,7 @@ class SettingsDialog : Dialog {
     [GtkChild] private unowned RadioButton encryption_radio_openpgp;
     [GtkChild] private unowned CheckButton send_button_checkbutton;
     [GtkChild] private unowned CheckButton enter_newline_checkbutton;
+    [GtkChild] private unowned CheckButton quit_ctrl_q_checkbutton;
 
     Dino.Entities.Settings settings = Dino.Application.get_default().settings;
 
@@ -33,6 +34,7 @@ class SettingsDialog : Dialog {
         send_button_checkbutton.active = settings.send_button;
         enter_newline_checkbutton.active = settings.enter_newline;
         enter_newline_checkbutton.sensitive = settings.send_button;
+        quit_ctrl_q_checkbutton.active = settings.quit_ctrl_q;
 
         typing_checkbutton.toggled.connect(() => { settings.send_typing = typing_checkbutton.active; } );
         marker_checkbutton.toggled.connect(() => { settings.send_marker = marker_checkbutton.active; } );
@@ -67,6 +69,7 @@ class SettingsDialog : Dialog {
                 enter_newline_checkbutton.active = visible;
             }
         });
+        quit_ctrl_q_checkbutton.toggled.connect(() => { settings.quit_ctrl_q = quit_ctrl_q_checkbutton.active; });
     }
 }