Add filter box to hotkey preferences

data/gui/window/preferences/02_hotkeys.cfg

@@ -41,6 +41,36 @@
 
 				[/row]
 
+				[row]
+
+					[column]
+						grow_factor = 0
+						border = "all"
+						border_size = 5
+
+						[label]
+							definition = "default"
+							label = _ "Search:"
+						[/label]
+					[/column]
+
+					[column]
+						grow_factor = 1
+						border = "all"
+						border_size = 5
+						horizontal_grow = true
+
+						[text_box]
+							id = "filter"
+							definition = "default"
+
+							tooltip = _ "Filters on addon description, version, type or author."
+							{FITER_TEXT_BOX_HINT}
+						[/text_box]
+					[/column]
+
+				[/row]
+
 			[/grid]
 
 		[/column]

src/gui/dialogs/preferences_dialog.cpp

@@ -141,6 +141,11 @@ preferences_dialog::preferences_dialog(const config& game_cfg, const PREFERENCE_
 	}
 }
 
+void preferences_dialog::on_filtertext_changed(text_box_base* textbox)
+{
+	hotkey_name_filter_callback(*textbox->get_window());
+}
+
 // Helper function to refresh resolution list
 void preferences_dialog::set_resolution_list(menu_button& res_list, CVideo& video)
 {
@@ -751,6 +756,9 @@ void preferences_dialog::post_build(window& window)
 
 	listbox& hotkey_list = setup_hotkey_list(window);
 
+	text_box& filter = find_widget<text_box>(&window, "filter", false);
+	filter.set_text_changed_callback(std::bind(&preferences_dialog::on_filtertext_changed, this, _1));
+
 	// Action column
 	hotkey_list.register_translatable_sorting_option(0, [this](const int i) { return visible_hotkeys_[i]->description.str(); });
 
@@ -908,6 +916,30 @@ void preferences_dialog::remove_hotkey_callback(listbox& hotkeys)
 	find_widget<label>(hotkeys.get_row_grid(row_number), "lbl_hotkey", false).set_label(hotkey::get_names(hotkey_item.command));
 }
 
+void preferences_dialog::hotkey_name_filter_callback(window& window) const
+{
+	const text_box& name_filter = find_widget<const text_box>(&window, "filter", false);
+	std::string text = name_filter.get_value();
+	boost::algorithm::to_lower(text);
+
+	boost::dynamic_bitset<> res(visible_hotkeys_.size());
+
+	for (std::size_t h = 0; h < visible_hotkeys_.size(); ++h)
+	{
+		const std::string description_lower = boost::algorithm::to_lower_copy(visible_hotkeys_[h]->description.str(), std::locale::classic());
+
+		if (description_lower.find(text) != std::string::npos) {
+			res[h] = true;
+		}
+		else {
+			res[h] = false;
+		}
+
+	}
+
+	find_widget<listbox>(&window, "list_hotkeys", false).set_row_shown(res);
+}
+
 void preferences_dialog::hotkey_type_filter_callback(window& window) const
 {
 	const multimenu_button& hotkey_menu = find_widget<const multimenu_button>(&window, "hotkey_category_menu", false);

src/gui/dialogs/preferences_dialog.hpp

@@ -18,6 +18,7 @@
 #include "config.hpp"
 #include "gui/dialogs/modal_dialog.hpp"
 #include "gui/widgets/group.hpp"
+#include "gui/widgets/text_box.hpp"
 #include "hotkey/hotkey_command.hpp"
 #include "preferences/game.hpp"
 #include "utils/make_enum.hpp"
@@ -113,6 +114,7 @@ private:
 	void on_page_select(window& window);
 	void on_tab_select(window& window);
 	void on_advanced_prefs_list_select(listbox& tree);
+	void on_filtertext_changed(text_box_base* textbox);
 
 	/** Special callback functions */
 	void handle_res_select(window& window);
@@ -121,6 +123,7 @@ private:
 	void remove_hotkey_callback(listbox& hotkeys);
 	void default_hotkey_callback(window& window);
 	void hotkey_type_filter_callback(window& window) const;
+	void hotkey_name_filter_callback(window& window) const;
 
 	group<preferences::LOBBY_JOINS> lobby_joins_group;