From 99533be690126bef86955842114f66bc8500a770 Mon Sep 17 00:00:00 2001
From: asonix <asonix@asonix.dog>
Date: Wed, 5 May 2021 13:32:55 -0500
Subject: [PATCH] Introduce 'already mapped' messaging for new commands

---
 src/Dialogs/NewCommandDialog.vala | 56 +++++++++++++++++++++++++------
 1 file changed, 45 insertions(+), 11 deletions(-)

diff --git a/src/Dialogs/NewCommandDialog.vala b/src/Dialogs/NewCommandDialog.vala
index 6ed708d..468c49d 100644
--- a/src/Dialogs/NewCommandDialog.vala
+++ b/src/Dialogs/NewCommandDialog.vala
@@ -1,5 +1,7 @@
 namespace Streamdeck.Dialogs {
     public class NewCommandDialog : Granite.Dialog {
+        private Gtk.Stack stack;
+        private Views.ConfigCommand command_page;
         private string serial_number;
         private ReadInput key_info;
 
@@ -24,11 +26,26 @@ namespace Streamdeck.Dialogs {
 
             press_page.attach (press_label, 0, 0);
 
-            var command_page = new Views.ConfigCommand (serial_number);
+            var existing_key_label = new Gtk.Label (
+                _("Key already mapped, try pressing a new key")
+            );
+            existing_key_label.valign = Gtk.Align.CENTER;
+            existing_key_label.get_style_context ().add_class (Granite.STYLE_CLASS_H3_LABEL);
 
-            var stack = new Gtk.Stack ();
+            var existing_key_page = new Gtk.Grid ();
+            existing_key_page.column_spacing = 12;
+            existing_key_page.row_spacing = 12;
+            existing_key_page.halign = Gtk.Align.CENTER;
+            existing_key_page.margin = 24;
+
+            existing_key_page.attach (existing_key_label, 0, 0);
+
+            command_page = new Views.ConfigCommand (serial_number);
+
+            stack = new Gtk.Stack ();
             stack.add_named (disconnected_page, "disconnected");
             stack.add_named (press_page, "keypress");
+            stack.add_named (existing_key_page, "existing");
             stack.add_named (command_page, "command");
 
             get_content_area ().add (stack);
@@ -41,15 +58,7 @@ namespace Streamdeck.Dialogs {
 
             show_all ();
 
-            key_press.connect ((_obj, key_info) => {
-                if (serial_number == key_info.serial_number) {
-                    this.key_info = key_info;
-                    command_page.set_key (key_info.key);
-                    stack.set_visible_child_name ("command");
-                } else {
-                    Daemon.instance.key_press.begin ();
-                }
-            });
+            key_press.connect (handle_key_press);
 
             if (Daemon.instance.get_obs_state () != "Connected") {
                 stack.set_visible_child_name ("disconnected");
@@ -58,5 +67,30 @@ namespace Streamdeck.Dialogs {
                 Daemon.instance.key_press.begin ();
             }
         }
+
+        private void handle_key_press (ReadInput key_info) {
+            if (serial_number == key_info.serial_number) {
+                if (already_pressed (key_info.key)) {
+                    stack.set_visible_child_name ("existing");
+                    Daemon.instance.key_press.begin ();
+                } else {
+                    this.key_info = key_info;
+                    command_page.set_key (key_info.key);
+                    stack.set_visible_child_name ("command");
+                }
+            } else {
+                Daemon.instance.key_press.begin ();
+            }
+        }
+
+        private bool already_pressed (uint8 key) {
+            foreach (CommandInfo cmd in Daemon.instance.get_commands (serial_number)) {
+                if (cmd.key == key) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
     }
 }