Added Buttons and Toolbar

expcore/Gui/toolbar.lua

@@ -0,0 +1,57 @@
+local Buttons = require './buttons'
+local Gui = require './core'
+local Roles = require 'expre.roles'
+local Event = require 'utils.event'
+local Game = require 'utils.game'
+
+local Toolbar = {
+    buttons = {}
+}
+
+function Toolbar.new_button(name)
+    name = name or #Toolbar.buttons+1
+    local button = Buttons.new_button('toolbar/'..name)
+    button:set_authenticator(Roles.player_allowed)
+    return button
+end
+
+function Toolbar.add_button(button)
+    table.insert(Toolbar.buttons,button)
+    Gui.allow_player_to_toggle_top_element_visibility(button.name)
+    Gui.on_player_show_top(button.name,function(event)
+        if not button.authenticator(player,button.clean_name or button.name) then
+            event.element.visible = false
+        end
+    end)
+    if not button.authenticator then
+        button:set_authenticator(function() return true end)
+    end
+end
+
+function Toolbar.draw(player)
+    for _,button in pairs(Toolbar.buttons) do
+        local self_button = button:draw_to(player.gui.top)
+        if button.authenticator(player,button.clean_name or button.name) then
+            self_button.visible = true
+        else
+            self_button.visible = false
+        end
+    end
+end
+
+Event.add(defines.events.on_player_created,function(event)
+    local player = Game.get_player_by_index(event.player_index)
+    Toolbar.draw(player)
+end)
+
+Event.add(Roles.player_role_assigned,function(event)
+    local player = Game.get_player_by_index(event.player_index)
+    Toolbar.draw(player)
+end)
+
+Event.add(Roles.player_role_unassigned,function(event)
+    local player = Game.get_player_by_index(event.player_index)
+    Toolbar.draw(player)
+end)
+
+return Toolbar