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broken_seals/game/ui/Window.gd

76 lines
2.1 KiB
GDScript

extends Control
# Copyright (c) 2019-2021 Péter Magyar
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
export(NodePath) var focus_button_path : NodePath = ""
var _previous : Control = null
var _current_focus : Control = null
var _viewport : Viewport = null
func _ready():
connect("visibility_changed", self, "on_visibility_changed")
func _enter_tree() -> void:
#find the viewport
var n : Node = self
while n:
n = n.get_parent()
if n is Viewport:
_viewport = n as Viewport
_viewport.connect("gui_focus_changed", self, "_on_control_focus_changed")
break
func _exit_tree():
if _viewport:
_viewport.disconnect("gui_focus_changed", self, "_on_control_focus_changed")
_viewport = null
func _on_control_focus_changed(node : Control) -> void:
_current_focus = node
func on_visibility_changed() -> void:
if visible:
focus()
else:
unfocus()
func focus():
_previous = _current_focus
var n : Control = get_node(focus_button_path)
if n:
n.grab_focus()
func unfocus():
if _previous:
_previous.grab_focus()
_previous = null
else:
release_focus()