MainMenu: Add clear button and icon for search input (#10363)

LICENSE.txt

@@ -23,6 +23,8 @@ paramat:
   textures/base/pack/menu_header.png
   textures/base/pack/next_icon.png
   textures/base/pack/prev_icon.png
+  textures/base/pack/clear.png
+  textures/base/pack/search.png
 
 rubenwardy, paramat:
   textures/base/pack/start_icon.png

builtin/mainmenu/dlg_contentstore.lua

@@ -340,7 +340,6 @@ function store.get_formspec(dlgdata)
 
 	local W = 15.75
 	local H = 9.5
-
 	local formspec
 	if #store.packages_full > 0 then
 		formspec = {
@@ -353,7 +352,8 @@ function store.get_formspec(dlgdata)
 			"container[0.375,0.375]",
 			"field[0,0;7.225,0.8;search_string;;", core.formspec_escape(search_string), "]",
 			"field_close_on_enter[search_string;false]",
-			"button[7.225,0;2,0.8;search;", fgettext("Search"), "]",
+			"image_button[7.3,0;0.8,0.8;", core.formspec_escape(defaulttexturedir .. "search.png"), ";search;]",
+			"image_button[8.125,0;0.8,0.8;", core.formspec_escape(defaulttexturedir .. "clear.png"), ";clear;]",
 			"dropdown[9.6,0;2.4,0.8;type;", table.concat(filter_types_titles, ","), ";", filter_type, "]",
 			"container_end[]",
 
@@ -504,6 +504,13 @@ function store.handle_submit(this, fields)
 		return true
 	end
 
+	if fields.clear then
+		search_string = ""
+		cur_page = 1
+		store.filter_packages("")
+		return true
+	end
+
 	if fields.back then
 		this:delete()
 		return true

builtin/mainmenu/tab_online.lua

@@ -34,7 +34,8 @@ local function get_formspec(tabview, name, tabdata)
 	local retval =
 		-- Search
 		"field[0.15,0.075;5.91,1;te_search;;" .. core.formspec_escape(tabdata.search_for) .. "]" ..
-		"button[5.62,-0.25;1.5,1;btn_mp_search;" .. fgettext("Search") .. "]" ..
+		"image_button[5.63,-.165;.83,.83;" .. core.formspec_escape(defaulttexturedir .. "search.png") .. ";btn_mp_search;]" ..
+		"image_button[6.3,-.165;.83,.83;" .. core.formspec_escape(defaulttexturedir .. "clear.png") .. ";btn_mp_clear;]" ..
 		"image_button[6.97,-.165;.83,.83;" .. core.formspec_escape(defaulttexturedir .. "refresh.png")
 			.. ";btn_mp_refresh;]" ..
 
@@ -243,6 +244,12 @@ local function main_button_handler(tabview, fields, name, tabdata)
 		return true
 	end
 
+	if fields.btn_mp_clear then
+		tabdata.search_for = ""
+		menudata.search_result = nil
+		return true
+	end
+
 	if fields.btn_mp_search or fields.key_enter_field == "te_search" then
 		tabdata.fav_selected = 1
 		local input = fields.te_search:lower()