First commit 🎉

addons/popochiu/editor/popups/migrations_panel/migration_step.gd

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+@tool
+extends HBoxContainer
+
+@onready var check_box: CheckBox = $CheckBox
+@onready var description: RichTextLabel = $Description
+@onready var progress: TextureRect = $Progress
+
+
+#region Godot ######################################################################################
+func _ready() -> void:
+	PopochiuEditorHelper.override_font(description, "normal_font", "output_source")
+	PopochiuEditorHelper.override_font(description, "bold_font", "output_source_bold")
+	PopochiuEditorHelper.override_font(description, "italics_font", "output_source_italic")
+	progress.hide()
+
+
+#endregion
+
+#region Public #####################################################################################
+func start() -> void:
+	var idx := 1
+	progress.visible = true
+	while progress.visible:
+		progress.texture = get_theme_icon("Progress%d" % idx, "EditorIcons")
+		await PopochiuEditorHelper.secs_passed(0.1)
+		
+		idx = wrapi(idx + 1, 1, 9)
+
+
+func stop() -> void:
+	progress.visible = false
+
+
+#endregion

addons/popochiu/editor/popups/migrations_panel/migration_step.gd.uid

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+uid://brruh2jvx85oe

addons/popochiu/editor/popups/migrations_panel/migration_tab.gd

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+@tool
+extends PanelContainer
+
+const MIGRATION_STEP_SCENE = preload(
+	"res://addons/popochiu/editor/popups/migrations_panel/migration_step.tscn"
+)
+const MigrationStep = preload(
+	"res://addons/popochiu/editor/popups/migrations_panel/migration_step.gd"
+)
+
+@onready var description: Label = %Description
+@onready var steps: VBoxContainer = %Steps
+
+
+#region Public #####################################################################################
+func set_steps(steps_texts: Array) -> void:
+	for text: String in steps_texts:
+		var step: MigrationStep = MIGRATION_STEP_SCENE.instantiate()
+		steps.add_child(step)
+		step.description.text = text
+
+
+func start_step(idx: int) -> void:
+	(steps.get_child(idx) as MigrationStep).start()
+
+
+func update_steps(popochiu_migration: PopochiuMigration) -> void:
+	for idx: int in popochiu_migration.completed:
+		var step: MigrationStep = steps.get_child(idx)
+		step.check_box.set_pressed_no_signal(true)
+		step.stop()
+	
+	for idx: int in popochiu_migration.ignored:
+		var step: MigrationStep = steps.get_child(idx)
+		step.check_box.set_pressed_no_signal(false)
+		step.modulate.a = 0.5
+		step.stop()
+
+
+func get_total_height() -> float:
+	return description.size.y + steps.size.y
+
+
+#endregion

addons/popochiu/editor/popups/migrations_panel/migration_tab.gd.uid

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+uid://uwi5nm4r2p1k

addons/popochiu/editor/popups/migrations_panel/migration_tab.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://c1ivmn6tasatp"]
+
+[ext_resource type="Script" path="res://addons/popochiu/editor/popups/migrations_panel/migration_tab.gd" id="1_2mn16"]
+
+[node name="MigrationTab" type="PanelContainer"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_2mn16")
+
+[node name="VBoxContainer" type="VBoxContainer" parent="."]
+layout_mode = 2
+
+[node name="Description" type="Label" parent="VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+text = "The migration Description"
+
+[node name="HSeparator" type="HSeparator" parent="VBoxContainer"]
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="VBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 3
+theme_override_constants/margin_left = 4
+theme_override_constants/margin_top = 4
+theme_override_constants/margin_right = 4
+theme_override_constants/margin_bottom = 4
+
+[node name="Steps" type="VBoxContainer" parent="VBoxContainer/MarginContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+theme_override_constants/separation = 8

addons/popochiu/editor/popups/migrations_panel/migrations_panel.gd

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+@tool
+extends Control
+
+const MIGRATION_TAB_SCENE = preload(
+	"res://addons/popochiu/editor/popups/migrations_panel/migration_tab.tscn"
+)
+const MigrationTab = preload(
+	"res://addons/popochiu/editor/popups/migrations_panel/migration_tab.gd"
+)
+
+@onready var tab_container: TabContainer = %TabContainer
+@onready var reload_label: Label = %ReloadLabel
+
+
+#region Godot ######################################################################################
+func _ready() -> void:
+	reload_label.hide()
+
+
+#endregion
+
+#region Public #####################################################################################
+func add_migration(popochiu_migration: PopochiuMigration) -> void:
+	var migration := MIGRATION_TAB_SCENE.instantiate()
+	tab_container.add_child.call_deferred(migration)
+	await migration.ready
+	
+	migration.name = popochiu_migration.get_migration_name()
+	migration.anchors_preset = Control.PRESET_FULL_RECT
+	migration.description.text = popochiu_migration.DESCRIPTION
+	migration.set_steps(popochiu_migration.STEPS)
+
+
+func start_step(popochiu_migration: PopochiuMigration, idx: int) -> void:
+	var migration_tab: MigrationTab = tab_container.get_node(
+		popochiu_migration.get_migration_name()
+	)
+	tab_container.current_tab = migration_tab.get_index()
+	migration_tab.start_step(idx)
+
+
+func update_steps(popochiu_migration: PopochiuMigration) -> void:
+	var migration_tab: MigrationTab = tab_container.get_node(
+		popochiu_migration.get_migration_name()
+	)
+	tab_container.current_tab = migration_tab.get_index()
+	migration_tab.update_steps(popochiu_migration)
+
+
+#endregion

addons/popochiu/editor/popups/migrations_panel/migrations_panel.gd.uid

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+uid://bonq4almsk3mc

addons/popochiu/editor/popups/migrations_panel/migrations_panel.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://dws64ahd0a1s6"]
+
+[ext_resource type="Script" path="res://addons/popochiu/editor/popups/migrations_panel/migrations_panel.gd" id="1_brkhu"]
+
+[node name="MigrationsPanel" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_brkhu")
+
+[node name="PanelContainer" type="PanelContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="VBoxContainer" type="VBoxContainer" parent="PanelContainer"]
+layout_mode = 2
+
+[node name="TabContainer" type="TabContainer" parent="PanelContainer/VBoxContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="ReloadLabel" type="Label" parent="PanelContainer/VBoxContainer"]
+unique_name_in_owner = true
+visible = false
+custom_minimum_size = Vector2(320, 0)
+layout_mode = 2
+text = "The engine will restart after clicking OK."
+autowrap_mode = 2