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Improve static typing in the ExtensionsAPI

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This commit is contained in:
Emmanouil Papadeas 2024-02-22 00:46:28 +02:00
parent d9bdcf53ec
commit a06d6a2909
1 changed files with 68 additions and 59 deletions
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127
src/Autoload/ExtensionsApi.gd
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@ -37,9 +37,9 @@ var _action_history: Dictionary = {}
## [code]This function is used internally and not meant to be used by extensions.[/code] ## [code]This function is used internally and not meant to be used by extensions.[/code]
func check_sanity(extension_name: String): func check_sanity(extension_name: String):
if extension_name in _action_history.keys(): if extension_name in _action_history.keys():
var extension_history = _action_history[extension_name] var extension_history: Array = _action_history[extension_name]
if extension_history != []: if extension_history != []:
var error_msg = str( var error_msg := str(
"Extension: ", "Extension: ",
extension_name, extension_name,
" contains actons: ", " contains actons: ",
@ -57,8 +57,8 @@ func clear_history(extension_name: String):
## [code]This function is used internally and not meant to be used by extensions.[/code] ## [code]This function is used internally and not meant to be used by extensions.[/code]
func add_action(section: String, key: String): func add_action(section: String, key: String):
var action = str(section, "/", key) var action := str(section, "/", key)
var extension_name = _get_caller_extension_name() var extension_name := _get_caller_extension_name()
if extension_name != "Unknown": if extension_name != "Unknown":
if extension_name in _action_history.keys(): if extension_name in _action_history.keys():
var extension_history: Array = _action_history[extension_name] var extension_history: Array = _action_history[extension_name]
@ -69,15 +69,15 @@ func add_action(section: String, key: String):
## [code]This function is used internally and not meant to be used by extensions.[/code] ## [code]This function is used internally and not meant to be used by extensions.[/code]
func remove_action(section: String, key: String): func remove_action(section: String, key: String):
var action = str(section, "/", key) var action := str(section, "/", key)
var extension_name = _get_caller_extension_name() var extension_name := _get_caller_extension_name()
if extension_name != "Unknown": if extension_name != "Unknown":
if extension_name in _action_history.keys(): if extension_name in _action_history.keys():
_action_history[extension_name].erase(action) _action_history[extension_name].erase(action)
## [code]This function is used internally and not meant to be used by extensions.[/code] ## [code]This function is used internally and not meant to be used by extensions.[/code]
func wait_frame(): # as yield is not available to classes below, so this is the solution func wait_frame(): # Await is not available to classes below, so this is the solution
# use by {await ExtensionsApi.wait_frame()} # use by {await ExtensionsApi.wait_frame()}
await get_tree().process_frame await get_tree().process_frame
await get_tree().process_frame await get_tree().process_frame
@ -94,7 +94,7 @@ func _get_caller_extension_name() -> String:
return "Unknown" return "Unknown"
func _exit_tree(): func _exit_tree() -> void:
for keys in _action_history.keys(): for keys in _action_history.keys():
check_sanity(keys) check_sanity(keys)
@ -247,7 +247,7 @@ class PanelAPI:
var top_menu_container = Global.top_menu_container var top_menu_container = Global.top_menu_container
var panels_submenu: PopupMenu = top_menu_container.panels_submenu var panels_submenu: PopupMenu = top_menu_container.panels_submenu
# adding the node to the first tab we find, it'll be re-ordered by layout anyway # adding the node to the first tab we find, it'll be re-ordered by layout anyway
var tabs = _get_tabs_in_root(dockable.layout.root) var tabs := _get_tabs_in_root(dockable.layout.root)
if tabs.size() != 0: if tabs.size() != 0:
dockable.add_child(node) dockable.add_child(node)
tabs[0].insert_node(0, node) # Insert at the beginning tabs[0].insert_node(0, node) # Insert at the beginning
@ -260,7 +260,7 @@ class PanelAPI:
panels_submenu.clear() panels_submenu.clear()
for element in new_elements: for element in new_elements:
panels_submenu.add_check_item(element.name) panels_submenu.add_check_item(element.name)
var is_hidden: bool = dockable.is_control_hidden(element) var is_hidden := dockable.is_control_hidden(element)
panels_submenu.set_item_checked(new_elements.find(element), !is_hidden) panels_submenu.set_item_checked(new_elements.find(element), !is_hidden)
# re-assigning layout # re-assigning layout
top_menu_container.set_layout(top_menu_container.selected_layout) top_menu_container.set_layout(top_menu_container.selected_layout)
@ -273,13 +273,13 @@ class PanelAPI:
## Removes the [param node] from the DockableContainer. ## Removes the [param node] from the DockableContainer.
func remove_node_from_tab(node: Node) -> void: func remove_node_from_tab(node: Node) -> void:
var top_menu_container = Global.top_menu_container var top_menu_container := Global.top_menu_container
var dockable = Global.control.find_child("DockableContainer") var dockable := _get_dockable_container_ui()
var panels_submenu: PopupMenu = top_menu_container.panels_submenu var panels_submenu: PopupMenu = top_menu_container.panels_submenu
# find the tab that contains the node # find the tab that contains the node
if node == null: if node == null:
return return
var tab = _find_tab_with_node(node.name, dockable) var tab := _find_tab_with_node(node.name, dockable)
if not tab: if not tab:
push_error("Tab not found") push_error("Tab not found")
return return
@ -303,25 +303,27 @@ class PanelAPI:
ExtensionsApi.remove_action("PanelAPI", "add_tab") ExtensionsApi.remove_action("PanelAPI", "add_tab")
# PRIVATE METHODS # PRIVATE METHODS
func _get_dockable_container_ui() -> Node: func _get_dockable_container_ui() -> DockableContainer:
return Global.control.find_child("DockableContainer") return Global.control.find_child("DockableContainer")
func _find_tab_with_node(node_name: String, dockable_container): func _find_tab_with_node(
var root = dockable_container.layout.root node_name: String, dockable_container: DockableContainer
var tabs = _get_tabs_in_root(root) ) -> DockableLayoutPanel:
var root := dockable_container.layout.root
var tabs := _get_tabs_in_root(root)
for tab in tabs: for tab in tabs:
var idx = tab.find_name(node_name) var idx := tab.find_name(node_name)
if idx != -1: if idx != -1:
return tab return tab
return null return null
func _get_tabs_in_root(parent_resource) -> Array: func _get_tabs_in_root(parent_resource: DockableLayoutNode) -> Array[DockableLayoutPanel]:
var parents := [] # Resources have no get_parent_resource() so this is an alternative var parents := [] # Resources have no get_parent_resource() so this is an alternative
var scanned := [] # To keep track of already discovered layout_split resources var scanned := [] # To keep track of already discovered layout_split resources
var child_number := 0 var child_number := 0
parents.append(parent_resource) parents.append(parent_resource)
var scan_target = parent_resource var scan_target := parent_resource
var tabs := [] var tabs: Array[DockableLayoutPanel] = []
# Get children in the parent, the initial parent is the node we entered as "parent" # Get children in the parent, the initial parent is the node we entered as "parent"
while child_number < 2: while child_number < 2:
# If parent isn't a (layout_split) resource then there is no point # If parent isn't a (layout_split) resource then there is no point
@ -329,11 +331,11 @@ class PanelAPI:
if !scan_target is DockableLayoutSplit: if !scan_target is DockableLayoutSplit:
break break
var child_resource var child_resource: DockableLayoutNode
if child_number == 0: if child_number == 0:
child_resource = scan_target.get_first() # First child child_resource = (scan_target as DockableLayoutSplit).get_first() # First child
elif child_number == 1: elif child_number == 1:
child_resource = scan_target.get_second() # Second child child_resource = (scan_target as DockableLayoutSplit).get_second() # Second child
# If the child resource is a tab and it wasn't discovered before, add it to "paths" # If the child resource is a tab and it wasn't discovered before, add it to "paths"
if child_resource is DockableLayoutPanel: if child_resource is DockableLayoutPanel:
@ -396,7 +398,7 @@ class ThemeAPI:
## Gives ability to add/remove tools. ## Gives ability to add/remove tools.
class ToolAPI: class ToolAPI:
# gdlint: ignore=constant-name # gdlint: ignore=constant-name
const LayerTypes = Global.LayerTypes const LayerTypes := Global.LayerTypes
## Adds a tool to pixelorama with name [param tool_name] (without spaces), ## Adds a tool to pixelorama with name [param tool_name] (without spaces),
## display name [param display_name], tool scene [param scene], layers that the tool works ## display name [param display_name], tool scene [param scene], layers that the tool works
@ -459,14 +461,17 @@ class SelectionAPI:
## with content if [param with_content] is [code]true[/code]. ## with content if [param with_content] is [code]true[/code].
## If [param transform_standby] is [code]true[/code] then the transformation will not be ## If [param transform_standby] is [code]true[/code] then the transformation will not be
## applied immediatelyunless [kbd]Enter[/kbd] is pressed. ## applied immediatelyunless [kbd]Enter[/kbd] is pressed.
func move_selection(destination: Vector2, with_content := true, transform_standby := false): func move_selection(
destination: Vector2i, with_content := true, transform_standby := false
) -> void:
if not with_content: if not with_content:
Global.canvas.selection.transform_content_confirm() Global.canvas.selection.transform_content_confirm()
Global.canvas.selection.move_borders_start() Global.canvas.selection.move_borders_start()
else: else:
Global.canvas.selection.transform_content_start() Global.canvas.selection.transform_content_start()
var rel_direction = destination - Global.canvas.selection.big_bounding_rectangle.position var selection_rectangle: Rect2i = Global.canvas.selection.big_bounding_rectangle
Global.canvas.selection.move_content(rel_direction.floor()) var rel_direction := destination - selection_rectangle.position
Global.canvas.selection.move_content(rel_direction)
Global.canvas.selection.move_borders_end() Global.canvas.selection.move_borders_end()
if not transform_standby and with_content: if not transform_standby and with_content:
Global.canvas.selection.transform_content_confirm() Global.canvas.selection.transform_content_confirm()
@ -475,7 +480,9 @@ class SelectionAPI:
## with content if [param with_content] is [code]true[/code]. ## with content if [param with_content] is [code]true[/code].
## If [param transform_standby] is [code]true[/code] then the transformation will not be ## If [param transform_standby] is [code]true[/code] then the transformation will not be
## applied immediately unless [kbd]Enter[/kbd] is pressed. ## applied immediately unless [kbd]Enter[/kbd] is pressed.
func resize_selection(new_size: Vector2, with_content := true, transform_standby := false): func resize_selection(
new_size: Vector2i, with_content := true, transform_standby := false
) -> void:
if not with_content: if not with_content:
Global.canvas.selection.transform_content_confirm() Global.canvas.selection.transform_content_confirm()
Global.canvas.selection.move_borders_start() Global.canvas.selection.move_borders_start()
@ -553,13 +560,13 @@ class ProjectAPI:
## Frames are counted from left to right, layers are counted from bottom to top. ## Frames are counted from left to right, layers are counted from bottom to top.
## Frames/layers start at "0" and end at [param project.frames.size() - 1] and ## Frames/layers start at "0" and end at [param project.frames.size() - 1] and
## [param project.layers.size() - 1] respectively. ## [param project.layers.size() - 1] respectively.
func select_cels(selected_array := [[0, 0]]): func select_cels(selected_array := [[0, 0]]) -> void:
var project := Global.current_project var project := Global.current_project
project.selected_cels.clear() project.selected_cels.clear()
for cel_position in selected_array: for cel_position in selected_array:
if typeof(cel_position) == TYPE_ARRAY and cel_position.size() == 2: if typeof(cel_position) == TYPE_ARRAY and cel_position.size() == 2:
var frame = clampi(cel_position[0], 0, project.frames.size() - 1) var frame := clampi(cel_position[0], 0, project.frames.size() - 1)
var layer = clampi(cel_position[1], 0, project.layers.size() - 1) var layer := clampi(cel_position[1], 0, project.layers.size() - 1)
if not [frame, layer] in project.selected_cels: if not [frame, layer] in project.selected_cels:
project.selected_cels.append([frame, layer]) project.selected_cels.append([frame, layer])
project.change_cel(project.selected_cels[-1][0], project.selected_cels[-1][1]) project.change_cel(project.selected_cels[-1][0], project.selected_cels[-1][1])
@ -602,16 +609,16 @@ class ProjectAPI:
## [br][param type] = 0 --> PixelLayer, ## [br][param type] = 0 --> PixelLayer,
## [br][param type] = 1 --> GroupLayer, ## [br][param type] = 1 --> GroupLayer,
## [br][param type] = 2 --> 3DLayer ## [br][param type] = 2 --> 3DLayer
func add_new_layer(above_layer: int, name := "", type := Global.LayerTypes.PIXEL): func add_new_layer(above_layer: int, name := "", type := Global.LayerTypes.PIXEL) -> void:
var project = ExtensionsApi.project.get_current_project() var project := ExtensionsApi.project.current_project
if above_layer < project.layers.size() and above_layer >= 0: if above_layer < project.layers.size() and above_layer >= 0:
var old_current = project.current_layer var old_current := project.current_layer
project.current_layer = above_layer # temporary assignment project.current_layer = above_layer # temporary assignment
if type >= 0 and type < Global.LayerTypes.size(): if type >= 0 and type < Global.LayerTypes.size():
Global.animation_timeline.add_layer(type) Global.animation_timeline.add_layer(type)
if name != "": if name != "":
project.layers[above_layer + 1].name = name project.layers[above_layer + 1].name = name
var l_idx = Global.layer_vbox.get_child_count() - (above_layer + 2) var l_idx := Global.layer_vbox.get_child_count() - (above_layer + 2)
Global.layer_vbox.get_child(l_idx).label.text = name Global.layer_vbox.get_child(l_idx).label.text = name
project.current_layer = old_current project.current_layer = old_current
else: else:
@ -643,30 +650,30 @@ class ExportAPI:
is_animated := true is_animated := true
) -> int: ) -> int:
# Separate enum name and file name # Separate enum name and file name
var extension = "" var extension := ""
var format_name = "" var format_name := ""
if format_info.has("extension"): if format_info.has("extension"):
extension = format_info["extension"] extension = format_info["extension"]
if format_info.has("description"): if format_info.has("description"):
format_name = format_info["description"].strip_edges().to_upper().replace(" ", "_") format_name = format_info["description"].strip_edges().to_upper().replace(" ", "_")
# Change format name if another one uses the same name # Change format name if another one uses the same name
var existing_format_names = Export.FileFormat.keys() + Export.custom_file_formats.keys() var existing_format_names := Export.FileFormat.keys() + Export.custom_file_formats.keys()
for i in range(existing_format_names.size()): for i in range(existing_format_names.size()):
var test_name = format_name var test_name := format_name
if i != 0: if i != 0:
test_name = str(test_name, "_", i) test_name = str(test_name, "_", i)
if !existing_format_names.has(test_name): if !existing_format_names.has(test_name):
format_name = test_name format_name = test_name
break break
# Setup complete, add the exporter # Setup complete, add the exporter
var id = Export.add_custom_file_format( var id := Export.add_custom_file_format(
format_name, extension, exporter_generator, tab, is_animated format_name, extension, exporter_generator, tab, is_animated
) )
ExtensionsApi.add_action("ExportAPI", "add_exporter") ExtensionsApi.add_action("ExportAPI", "add_exporter")
return id return id
## Removes the exporter with [param id] from Pixelorama. ## Removes the exporter with [param id] from Pixelorama.
func remove_export_option(id: int): func remove_export_option(id: int) -> void:
if Export.custom_exporter_generators.has(id): if Export.custom_exporter_generators.has(id):
Export.remove_custom_file_format(id) Export.remove_custom_file_format(id)
ExtensionsApi.remove_action("ExportAPI", "add_exporter") ExtensionsApi.remove_action("ExportAPI", "add_exporter")
@ -686,13 +693,13 @@ class ImportAPI:
## 2. The method [method initiate_import] which takes 2 arguments: [code]path[/code], ## 2. The method [method initiate_import] which takes 2 arguments: [code]path[/code],
## [code]image[/code], which are automatically passed to [method initiate_import] at ## [code]image[/code], which are automatically passed to [method initiate_import] at
## time of import. ## time of import.
func add_import_option(import_name: StringName, import_scene_preload: PackedScene): func add_import_option(import_name: StringName, import_scene_preload: PackedScene) -> int:
var id = OpenSave.add_import_option(import_name, import_scene_preload) var id := OpenSave.add_import_option(import_name, import_scene_preload)
ExtensionsApi.add_action("ImportAPI", "add_import_option") ExtensionsApi.add_action("ImportAPI", "add_import_option")
return id return id
## Removes the import option with [param id] from Pixelorama. ## Removes the import option with [param id] from Pixelorama.
func remove_import_option(id: int): func remove_import_option(id: int) -> void:
var import_name = OpenSave.custom_import_names.find_key(id) var import_name = OpenSave.custom_import_names.find_key(id)
OpenSave.custom_import_names.erase(import_name) OpenSave.custom_import_names.erase(import_name)
OpenSave.custom_importer_scenes.erase(id) OpenSave.custom_importer_scenes.erase(id)
@ -714,17 +721,19 @@ class SignalsAPI:
Global.project_switched.connect(_update_texture_signal) Global.project_switched.connect(_update_texture_signal)
Global.cel_switched.connect(_update_texture_signal) Global.cel_switched.connect(_update_texture_signal)
func _update_texture_signal(): func _update_texture_signal() -> void:
if _last_cel: if _last_cel:
_last_cel.texture_changed.disconnect(_on_texture_changed) _last_cel.texture_changed.disconnect(_on_texture_changed)
if Global.current_project: if Global.current_project:
_last_cel = Global.current_project.get_current_cel() _last_cel = Global.current_project.get_current_cel()
_last_cel.texture_changed.connect(_on_texture_changed) _last_cel.texture_changed.connect(_on_texture_changed)
func _on_texture_changed(): func _on_texture_changed() -> void:
texture_changed.emit() texture_changed.emit()
func _connect_disconnect(signal_class: Signal, callable: Callable, is_disconnecting := false): func _connect_disconnect(
signal_class: Signal, callable: Callable, is_disconnecting := false
) -> void:
if !is_disconnecting: if !is_disconnecting:
signal_class.connect(callable) signal_class.connect(callable)
ExtensionsApi.add_action("SignalsAPI", signal_class.get_name()) ExtensionsApi.add_action("SignalsAPI", signal_class.get_name())
@ -735,34 +744,34 @@ class SignalsAPI:
# APP RELATED SIGNALS # APP RELATED SIGNALS
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## when pixelorama is just opened. ## when pixelorama is just opened.
func signal_pixelorama_opened(callable: Callable, is_disconnecting := false): func signal_pixelorama_opened(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.pixelorama_opened, callable, is_disconnecting) _connect_disconnect(Global.pixelorama_opened, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## when pixelorama is about to close. ## when pixelorama is about to close.
func signal_pixelorama_about_to_close(callable: Callable, is_disconnecting := false): func signal_pixelorama_about_to_close(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.pixelorama_about_to_close, callable, is_disconnecting) _connect_disconnect(Global.pixelorama_about_to_close, callable, is_disconnecting)
# PROJECT RELATED SIGNALS # PROJECT RELATED SIGNALS
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## whenever a new project is created.[br] ## whenever a new project is created.[br]
## [b]Binds: [/b]It has one bind of type [code]Project[/code] which is the newly created project ## [b]Binds: [/b]It has one bind of type [code]Project[/code] which is the newly created project
func signal_project_created(callable: Callable, is_disconnecting := false): func signal_project_created(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.project_created, callable, is_disconnecting) _connect_disconnect(Global.project_created, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## after a project is saved. ## after a project is saved.
func signal_project_saved(callable: Callable, is_disconnecting := false): func signal_project_saved(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(OpenSave.project_saved, callable, is_disconnecting) _connect_disconnect(OpenSave.project_saved, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## whenever you switch to some other project. ## whenever you switch to some other project.
func signal_project_switched(callable: Callable, is_disconnecting := false): func signal_project_switched(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.project_switched, callable, is_disconnecting) _connect_disconnect(Global.project_switched, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## whenever you select a different cel. ## whenever you select a different cel.
func signal_cel_switched(callable: Callable, is_disconnecting := false): func signal_cel_switched(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.cel_switched, callable, is_disconnecting) _connect_disconnect(Global.cel_switched, callable, is_disconnecting)
# TOOL RELATED SIGNALS # TOOL RELATED SIGNALS
@ -770,7 +779,7 @@ class SignalsAPI:
## whenever a tool changes color.[br] ## whenever a tool changes color.[br]
## [b]Binds: [/b] It has two bind of type [Color] (indicating new color) ## [b]Binds: [/b] It has two bind of type [Color] (indicating new color)
## and [int] (Indicating button that tool is assigned to, see [enum @GlobalScope.MouseButton]) ## and [int] (Indicating button that tool is assigned to, see [enum @GlobalScope.MouseButton])
func signal_tool_color_changed(callable: Callable, is_disconnecting := false): func signal_tool_color_changed(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Tools.color_changed, callable, is_disconnecting) _connect_disconnect(Tools.color_changed, callable, is_disconnecting)
# TIMELINE RELATED SIGNALS # TIMELINE RELATED SIGNALS
@ -778,12 +787,12 @@ class SignalsAPI:
## whenever timeline animation starts.[br] ## whenever timeline animation starts.[br]
## [b]Binds: [/b] It has one bind of type [bool] which indicated if animation is in ## [b]Binds: [/b] It has one bind of type [bool] which indicated if animation is in
## forward direction ([code]true[/code]) or backward direction ([code]false[/code]) ## forward direction ([code]true[/code]) or backward direction ([code]false[/code])
func signal_timeline_animation_started(callable: Callable, is_disconnecting := false): func signal_timeline_animation_started(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.animation_timeline.animation_started, callable, is_disconnecting) _connect_disconnect(Global.animation_timeline.animation_started, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## whenever timeline animation stops. ## whenever timeline animation stops.
func signal_timeline_animation_finished(callable: Callable, is_disconnecting := false): func signal_timeline_animation_finished(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect( _connect_disconnect(
Global.animation_timeline.animation_finished, callable, is_disconnecting Global.animation_timeline.animation_finished, callable, is_disconnecting
) )
@ -791,7 +800,7 @@ class SignalsAPI:
# UPDATER SIGNALS # UPDATER SIGNALS
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
## whenever texture of the currently focused cel changes. ## whenever texture of the currently focused cel changes.
func signal_current_cel_texture_changed(callable: Callable, is_disconnecting := false): func signal_current_cel_texture_changed(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(texture_changed, callable, is_disconnecting) _connect_disconnect(texture_changed, callable, is_disconnecting)
## connects/disconnects a signal to [param callable], that emits ## connects/disconnects a signal to [param callable], that emits
@ -799,5 +808,5 @@ class SignalsAPI:
## [b]Binds: [/b]It has one bind of type [Dictionary] with keys: [code]exporter_id[/code], ## [b]Binds: [/b]It has one bind of type [Dictionary] with keys: [code]exporter_id[/code],
## [code]export_tab[/code], [code]preview_images[/code], [code]durations[/code] ## [code]export_tab[/code], [code]preview_images[/code], [code]durations[/code]
## [br] Use this if you plan on changing preview of export ## [br] Use this if you plan on changing preview of export
func signal_export_about_to_preview(callable: Callable, is_disconnecting := false): func signal_export_about_to_preview(callable: Callable, is_disconnecting := false) -> void:
_connect_disconnect(Global.export_dialog.about_to_preview, callable, is_disconnecting) _connect_disconnect(Global.export_dialog.about_to_preview, callable, is_disconnecting)