Update user interface to work with presenloader.gd

scenesrc/UserInterface.tscn

@@ -91,13 +91,13 @@ anchor_top = 0.5
 anchor_right = 0.5
 anchor_bottom = 0.5
 offset_left = -179.0
-offset_top = -88.5
+offset_top = -113.5
 offset_right = 179.0
-offset_bottom = 88.5
+offset_bottom = 113.5
 grow_horizontal = 2
 grow_vertical = 2
 
-[node name="Present" parent="Buttons" instance=ExtResource("6_xj8q1")]
+[node name="PresentZip" parent="Buttons" instance=ExtResource("6_xj8q1")]
 layout_mode = 1
 anchors_preset = 5
 anchor_left = 0.5
@@ -107,7 +107,20 @@ offset_left = -175.0
 offset_right = 175.0
 offset_bottom = 53.0
 grow_vertical = 1
-text = "[center]Open presentation[/center]"
+text = "[center]Open archive[/center]"
+
+[node name="PresentDir" parent="Buttons" instance=ExtResource("6_xj8q1")]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -175.0
+offset_top = -55.5
+offset_right = 175.0
+offset_bottom = -2.5
+text = "[center]Open directory[/center]"
 
 [node name="Docs" parent="Buttons" instance=ExtResource("6_xj8q1")]
 layout_mode = 1
@@ -117,9 +130,9 @@ anchor_top = 0.5
 anchor_right = 0.5
 anchor_bottom = 0.5
 offset_left = -175.0
-offset_top = -26.5
+offset_top = 2.5
 offset_right = 175.0
-offset_bottom = 26.5
+offset_bottom = 55.5
 text = "[center]View documentation[/center]"
 
 [node name="ClosePresencode" parent="Buttons" instance=ExtResource("6_xj8q1")]

src/userinterface.gd

@@ -5,6 +5,9 @@ var core_config: CoreConfiguration
 @onready var core: Core = get_node("/root/CORE")
 @onready var logger: CoreLoggerInstance = core.logger.get_instance("src/userinterface.gd", self)
 
+# Internal infrastructure
+var presenloader: Node
+
 # Variables
 var shutdown: bool = false
 var cleanup_hook: int
@@ -32,7 +35,8 @@ var splashes: Array[String] = [
 	"xD",
 	"Now in 2D!",
 	"very bad",
-	"beta and alpha males are overrated, i'm a release male"
+	"beta and alpha males are overrated, i'm a release male",
+	"uses .pcar files!"
 ]
 
 # Threads
@@ -99,12 +103,88 @@ func add_connections() -> void:
 	$Splash/Switcher.connect("pressed", func() -> void: update_splash())
 	
 	# Buttons
-	$Buttons/Present.connect("pressed", func() -> void:
+	$Buttons/PresentZip.connect("pressed", Callable(self, "display_open_dialog").bind(false))
-		logger.error("Not implemented.")
+	$Buttons/PresentDir.connect("pressed", Callable(self, "display_open_dialog").bind(true))
-	)
 	$Buttons/Docs.connect("pressed", func() -> void: OS.shell_open("https://presencode.jstm.staropensource.de"))
 	$Buttons/ClosePresencode.connect("pressed", func() -> void: core.quit_safely(0))
 
+func display_open_dialog(directory: bool) -> void:
+	var file_dialog: FileDialog = FileDialog.new()
+	
+	# AcceptDialog settings
+	file_dialog.title = "Open a Presencode-compatible presentation"
+	file_dialog.ok_button_text = "Load"
+	file_dialog.visible = true
+	
+	# ConfirmationDialog settings
+	file_dialog.size = Vector2i(500, 500)
+	file_dialog.min_size = Vector2i(250, 250)
+	
+	# FileDialog settings
+	file_dialog.access = FileDialog.Access.ACCESS_FILESYSTEM
+	if directory: file_dialog.file_mode = FileDialog.FileMode.FILE_MODE_OPEN_DIR
+	else: file_dialog.file_mode = FileDialog.FileMode.FILE_MODE_OPEN_FILE
+	if !directory: file_dialog.filters = PackedStringArray([ "*.pcar ; Presencode Archives" ])
+	file_dialog.mode_overrides_title = false
+	file_dialog.show_hidden_files = false
+	
+	# Add connections
+	file_dialog.connect("file_selected", Callable(self, "handle_open_dialog_logic").bind(file_dialog))
+	file_dialog.connect("dir_selected", Callable(self, "handle_open_dialog_logic").bind(file_dialog))
+	file_dialog.connect("canceled", func() -> void:
+		get_tree().root.remove_child(file_dialog)
+		file_dialog.queue_free()
+	)
+	
+	# Display dialog
+	get_tree().root.add_child(file_dialog)
+	
+	# Center dialog
+	# (we do this after add_child because FileDialog seems
+	# to run some logic related to 'size' during _ready())
+	file_dialog.position = core.misc.get_center(get_tree().root.size, file_dialog.size)
+
+func handle_open_dialog_logic(path: String, file_dialog: FileDialog) -> void:
+	# Remove dialog
+	get_tree().root.remove_child(file_dialog)
+	file_dialog.queue_free()
+	
+	# Check if presentation is valid
+	var error: String = presenloader.load_presentation(path)
+	if error != "":
+		# Display errors in dialog
+		var error_dialog: AcceptDialog = AcceptDialog.new()
+		
+		# Configure dialog
+		error_dialog.title = "Can't load presentation"
+		error_dialog.dialog_text = "Presencode is unable to load the presentation you tried to open.\nError thrown by presenloader.gd:\n" + error
+		error_dialog.ok_button_text = "ACK"
+		error_dialog.visible = true
+		
+		# Add connections
+		error_dialog.connect("confirmed", func() -> void:
+			get_tree().root.remove_child(error_dialog)
+			error_dialog.queue_free()
+		)
+		error_dialog.connect("canceled", func() -> void:
+			get_tree().root.remove_child(error_dialog)
+			error_dialog.queue_free()
+		)
+		
+		# Display dialog
+		get_tree().root.add_child(error_dialog)
+		
+		# Center dialog
+		# (we do this after add_child because AcceptDialog seems
+		# to run some logic related to 'size' during _ready())
+		error_dialog.position = core.misc.get_center(get_tree().root.size, error_dialog.size)
+		
+		# Don't unload the user interface, just exit
+		return
+	
+	# Unload user interface
+	unload()
+
 # Updates the splash text
 func update_splash() -> void:
 	var new_splash: String = splashes.pick_random()