372 lines
12 KiB
GDScript
372 lines
12 KiB
GDScript
class_name LuaAPI
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extends Node
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class EventSubscription:
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var id: int
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var element_id: String
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var event_name: String
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var callback_ref: int
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var vm: LuauVM
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var lua_api: LuaAPI
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var connected_signal: String = ""
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var connected_node: Node = null
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var dom_parser: HTMLParser
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var event_subscriptions: Dictionary = {}
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var next_subscription_id: int = 1
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var next_callback_ref: int = 1
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func _gurt_select_handler(vm: LuauVM) -> int:
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var selector: String = vm.luaL_checkstring(1)
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var element_id = ""
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if selector.begins_with("#"):
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element_id = selector.substr(1)
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else:
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vm.lua_pushnil()
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return 1
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var dom_node = dom_parser.parse_result.dom_nodes.get(element_id, null)
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if not dom_node:
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vm.lua_pushnil()
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return 1
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vm.lua_newtable()
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vm.lua_pushstring(element_id)
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vm.lua_setfield(-2, "_element_id")
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add_element_methods(vm)
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return 1
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func add_element_methods(vm: LuauVM) -> void:
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vm.lua_pushcallable(_element_set_text_handler, "element.set_text")
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vm.lua_setfield(-2, "set_text")
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vm.lua_pushcallable(_element_get_text_handler, "element.get_text")
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vm.lua_setfield(-2, "get_text")
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vm.lua_pushcallable(_element_on_event_handler, "element.on")
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vm.lua_setfield(-2, "on")
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# Element manipulation handlers
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func _element_set_text_handler(vm: LuauVM) -> int:
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vm.luaL_checktype(1, vm.LUA_TTABLE)
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var text: String = vm.luaL_checkstring(2)
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vm.lua_getfield(1, "_element_id")
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var element_id: String = vm.lua_tostring(-1)
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vm.lua_pop(1)
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var dom_node = dom_parser.parse_result.dom_nodes.get(element_id, null)
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var text_node = get_dom_node(dom_node, "text")
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if text_node:
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text_node.text = text
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return 0
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func _element_get_text_handler(vm: LuauVM) -> int:
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vm.luaL_checktype(1, vm.LUA_TTABLE)
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vm.lua_getfield(1, "_element_id")
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var element_id: String = vm.lua_tostring(-1)
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vm.lua_pop(1)
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var dom_node = dom_parser.parse_result.dom_nodes.get(element_id, null)
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var text = ""
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var text_node = get_dom_node(dom_node, "text")
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if text_node:
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if text_node.has_method("get_text"):
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text = text_node.get_text()
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else:
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text = text_node.text
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vm.lua_pushstring(text)
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return 1
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# Event system handlers
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func _element_on_event_handler(vm: LuauVM) -> int:
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vm.luaL_checktype(1, vm.LUA_TTABLE)
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var event_name: String = vm.luaL_checkstring(2)
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vm.luaL_checktype(3, vm.LUA_TFUNCTION)
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vm.lua_getfield(1, "_element_id")
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var element_id: String = vm.lua_tostring(-1)
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vm.lua_pop(1)
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var dom_node = dom_parser.parse_result.dom_nodes.get(element_id, null)
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if not dom_node:
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vm.lua_pushnil()
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return 1
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var subscription = _create_subscription(vm, element_id, event_name)
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event_subscriptions[subscription.id] = subscription
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var signal_node = get_dom_node(dom_node, "signal")
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var success = LuaEventUtils.connect_element_event(signal_node, event_name, subscription)
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return _handle_subscription_result(vm, subscription, success)
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func _body_on_event_handler(vm: LuauVM) -> int:
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vm.luaL_checktype(1, vm.LUA_TTABLE)
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var event_name: String = vm.luaL_checkstring(2)
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vm.luaL_checktype(3, vm.LUA_TFUNCTION)
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var subscription = _create_subscription(vm, "body", event_name)
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event_subscriptions[subscription.id] = subscription
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var success = LuaEventUtils.connect_body_event(event_name, subscription, self)
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return _handle_subscription_result(vm, subscription, success)
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func _subscription_unsubscribe_handler(vm: LuauVM) -> int:
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vm.luaL_checktype(1, vm.LUA_TTABLE)
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vm.lua_getfield(1, "_subscription_id")
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var subscription_id: int = vm.lua_tointeger(-1)
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vm.lua_pop(1)
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var subscription = event_subscriptions.get(subscription_id, null)
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if subscription:
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LuaEventUtils.disconnect_subscription(subscription, self)
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event_subscriptions.erase(subscription_id)
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vm.lua_pushnil()
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vm.lua_rawseti(vm.LUA_REGISTRYINDEX, subscription.callback_ref)
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return 0
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# Subscription management
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func _create_subscription(vm: LuauVM, element_id: String, event_name: String) -> EventSubscription:
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var subscription_id = next_subscription_id
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next_subscription_id += 1
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var callback_ref = next_callback_ref
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next_callback_ref += 1
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vm.lua_pushvalue(3)
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vm.lua_rawseti(vm.LUA_REGISTRYINDEX, callback_ref)
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var subscription = EventSubscription.new()
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subscription.id = subscription_id
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subscription.element_id = element_id
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subscription.event_name = event_name
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subscription.callback_ref = callback_ref
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subscription.vm = vm
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subscription.lua_api = self
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return subscription
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func _handle_subscription_result(vm: LuauVM, subscription: EventSubscription, success: bool) -> int:
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if success:
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vm.lua_newtable()
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vm.lua_pushinteger(subscription.id)
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vm.lua_setfield(-2, "_subscription_id")
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vm.lua_pushcallable(_subscription_unsubscribe_handler, "subscription.unsubscribe")
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vm.lua_setfield(-2, "unsubscribe")
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return 1
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else:
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vm.lua_pushnil()
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vm.lua_rawseti(vm.LUA_REGISTRYINDEX, subscription.callback_ref)
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event_subscriptions.erase(subscription.id)
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vm.lua_pushnil()
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return 1
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# Event callbacks
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func _on_event_triggered(subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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subscription.vm.lua_rawgeti(subscription.vm.LUA_REGISTRYINDEX, subscription.callback_ref)
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if subscription.vm.lua_isfunction(-1):
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if subscription.vm.lua_pcall(0, 0, 0) != subscription.vm.LUA_OK:
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print("GURT ERROR in event callback: ", subscription.vm.lua_tostring(-1))
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subscription.vm.lua_pop(1)
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else:
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subscription.vm.lua_pop(1)
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func _on_gui_input_click(event: InputEvent, subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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if event is InputEventMouseButton:
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var mouse_event = event as InputEventMouseButton
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if mouse_event.button_index == MOUSE_BUTTON_LEFT and mouse_event.pressed:
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_execute_lua_callback(subscription)
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func _on_gui_input_mouse_universal(event: InputEvent, signal_node: Node) -> void:
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if event is InputEventMouseButton:
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var mouse_event = event as InputEventMouseButton
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if mouse_event.button_index == MOUSE_BUTTON_LEFT:
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# Find all subscriptions for this node with mouse events
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for subscription_id in event_subscriptions:
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var subscription = event_subscriptions[subscription_id]
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if subscription.connected_node == signal_node and subscription.connected_signal == "gui_input_mouse":
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var should_trigger = false
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if subscription.event_name == "mousedown" and mouse_event.pressed:
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should_trigger = true
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elif subscription.event_name == "mouseup" and not mouse_event.pressed:
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should_trigger = true
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if should_trigger:
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_execute_lua_callback(subscription)
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# Event callback handlers
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func _on_gui_input_mousemove(event: InputEvent, subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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if event is InputEventMouseMotion:
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var mouse_event = event as InputEventMouseMotion
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_handle_mousemove_event(mouse_event, subscription)
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func _on_focus_gui_input(event: InputEvent, subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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if event is InputEventMouseButton:
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var mouse_event = event as InputEventMouseButton
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if mouse_event.button_index == MOUSE_BUTTON_LEFT and mouse_event.pressed:
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if subscription.event_name == "focusin":
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_execute_lua_callback(subscription)
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func _on_body_mouse_enter(subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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if subscription.event_name == "mouseenter":
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_execute_lua_callback(subscription)
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func _on_body_mouse_exit(subscription: EventSubscription) -> void:
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if not event_subscriptions.has(subscription.id):
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return
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if subscription.event_name == "mouseexit":
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_execute_lua_callback(subscription)
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func _execute_lua_callback(subscription: EventSubscription, args: Array = []) -> void:
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subscription.vm.lua_rawgeti(subscription.vm.LUA_REGISTRYINDEX, subscription.callback_ref)
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if subscription.vm.lua_isfunction(-1):
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for arg in args:
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subscription.vm.lua_pushvariant(arg)
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if subscription.vm.lua_pcall(args.size(), 0, 0) != subscription.vm.LUA_OK:
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print("GURT ERROR in callback: ", subscription.vm.lua_tostring(-1))
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subscription.vm.lua_pop(1)
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else:
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subscription.vm.lua_pop(1)
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# Global input processing
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func _input(event: InputEvent) -> void:
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if event is InputEventKey:
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var key_event = event as InputEventKey
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for subscription_id in event_subscriptions:
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var subscription = event_subscriptions[subscription_id]
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if subscription.element_id == "body" and subscription.connected_signal == "input":
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var should_trigger = false
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match subscription.event_name:
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"keydown":
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should_trigger = key_event.pressed
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"keyup":
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should_trigger = not key_event.pressed
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"keypress":
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should_trigger = key_event.pressed
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if should_trigger:
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var key_info = {
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"key": OS.get_keycode_string(key_event.keycode),
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"keycode": key_event.keycode,
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"ctrl": key_event.ctrl_pressed,
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"shift": key_event.shift_pressed,
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"alt": key_event.alt_pressed
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}
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_execute_lua_callback(subscription, [key_info])
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elif event is InputEventMouseMotion:
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var mouse_event = event as InputEventMouseMotion
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for subscription_id in event_subscriptions:
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var subscription = event_subscriptions[subscription_id]
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if subscription.element_id == "body" and subscription.connected_signal == "input_mousemove":
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if subscription.event_name == "mousemove":
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_handle_mousemove_event(mouse_event, subscription)
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func _handle_mousemove_event(mouse_event: InputEventMouseMotion, subscription: EventSubscription) -> void:
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# TODO: pass reference instead of hardcoded path
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var body_container = get_node("/root/Main").website_container
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if body_container.get_parent() is MarginContainer:
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body_container = body_container.get_parent()
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if not body_container:
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return
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var container_rect = body_container.get_global_rect()
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var local_x = mouse_event.global_position.x - container_rect.position.x
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var local_y = mouse_event.global_position.y - container_rect.position.y
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# Only provide coordinates if mouse is within the container bounds
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if local_x >= 0 and local_y >= 0 and local_x <= container_rect.size.x and local_y <= container_rect.size.y:
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var mouse_info = {
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"x": local_x,
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"y": local_y,
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"deltaX": mouse_event.relative.x,
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"deltaY": mouse_event.relative.y
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}
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_execute_lua_callback(subscription, [mouse_info])
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# DOM node utilities
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func get_dom_node(node: Node, purpose: String = "general") -> Node:
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if not node:
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return null
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if node is MarginContainer:
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node = node.get_child(0)
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match purpose:
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"signal":
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if node is HTMLButton:
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return node.get_node_or_null("ButtonNode")
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elif node is RichTextLabel:
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return node
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elif node.has_method("get") and node.get("rich_text_label"):
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return node.get("rich_text_label")
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elif node.get_node_or_null("RichTextLabel"):
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return node.get_node_or_null("RichTextLabel")
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else:
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return node
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"text":
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if node.has_method("set_text") and node.has_method("get_text"):
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return node
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elif node is RichTextLabel:
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return node
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elif node.has_method("get") and node.get("rich_text_label"):
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return node.get("rich_text_label")
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elif node.get_node_or_null("RichTextLabel"):
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return node.get_node_or_null("RichTextLabel")
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else:
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if "text" in node:
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return node
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return null
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"general":
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if node is HTMLButton:
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return node.get_node_or_null("ButtonNode")
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elif node is RichTextLabel:
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return node
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elif node.get_node_or_null("RichTextLabel"):
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return node.get_node_or_null("RichTextLabel")
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else:
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return node
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return node
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# Main execution function
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func execute_lua_script(code: String, vm: LuauVM):
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vm.open_libraries([vm.LUA_BASE_LIB, vm.LUA_BIT32_LIB,
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vm.LUA_COROUTINE_LIB, vm.LUA_MATH_LIB, vm.LUA_UTF8_LIB,
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vm.LUA_TABLE_LIB, vm.LUA_STRING_LIB, vm.LUA_VECTOR_LIB])
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LuaFunctionUtils.setup_gurt_api(vm, self, dom_parser)
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if vm.lua_dostring(code) != vm.LUA_OK:
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print("LUA ERROR: ", vm.lua_tostring(-1))
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vm.lua_pop(1)
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