/**************************************************************************/
/*  tile_map_layer_group.cpp                                              */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "tile_map_layer_group.h"

#include "core/core_string_names.h"
#include "scene/2d/tile_map_layer.h"
#include "scene/resources/2d/tile_set.h"

#ifdef TOOLS_ENABLED

void TileMapLayerGroup::_cleanup_selected_layers() {
	for (int i = 0; i < selected_layers.size(); i++) {
		const String name = selected_layers[i];
		TileMapLayer *layer = Object::cast_to<TileMapLayer>(get_node_or_null(name));
		if (!layer) {
			selected_layers.remove_at(i);
			i--;
		}
	}
}

#endif // TOOLS_ENABLED

void TileMapLayerGroup::_tile_set_changed() {
	for (int i = 0; i < get_child_count(); i++) {
		TileMapLayer *layer = Object::cast_to<TileMapLayer>(get_child(i));
		if (layer) {
			layer->notify_tile_map_layer_group_change(TileMapLayer::DIRTY_FLAGS_LAYER_GROUP_TILE_SET);
		}
	}

	update_configuration_warnings();
}

#ifdef TOOLS_ENABLED

void TileMapLayerGroup::set_selected_layers(Vector<StringName> p_layer_names) {
	selected_layers = p_layer_names;
	_cleanup_selected_layers();

	// Update the layers modulation.
	for (int i = 0; i < get_child_count(); i++) {
		TileMapLayer *layer = Object::cast_to<TileMapLayer>(get_child(i));
		if (layer) {
			layer->notify_tile_map_layer_group_change(TileMapLayer::DIRTY_FLAGS_LAYER_GROUP_SELECTED_LAYERS);
		}
	}
}

Vector<StringName> TileMapLayerGroup::get_selected_layers() const {
	return selected_layers;
}

void TileMapLayerGroup::set_highlight_selected_layer(bool p_highlight_selected_layer) {
	if (highlight_selected_layer == p_highlight_selected_layer) {
		return;
	}

	highlight_selected_layer = p_highlight_selected_layer;

	for (int i = 0; i < get_child_count(); i++) {
		TileMapLayer *layer = Object::cast_to<TileMapLayer>(get_child(i));
		if (layer) {
			layer->notify_tile_map_layer_group_change(TileMapLayer::DIRTY_FLAGS_LAYER_GROUP_HIGHLIGHT_SELECTED);
		}
	}
}

bool TileMapLayerGroup::is_highlighting_selected_layer() const {
	return highlight_selected_layer;
}

#endif // TOOLS_ENABLED

void TileMapLayerGroup::remove_child_notify(Node *p_child) {
#ifdef TOOLS_ENABLED
	_cleanup_selected_layers();
#endif // TOOLS_ENABLED
}

void TileMapLayerGroup::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_tileset", "tileset"), &TileMapLayerGroup::set_tileset);
	ClassDB::bind_method(D_METHOD("get_tileset"), &TileMapLayerGroup::get_tileset);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "tile_set", PROPERTY_HINT_RESOURCE_TYPE, "TileSet"), "set_tileset", "get_tileset");
}

void TileMapLayerGroup::set_tileset(const Ref<TileSet> &p_tileset) {
	if (p_tileset == tile_set) {
		return;
	}

	// Set the tileset, registering to its changes.
	if (tile_set.is_valid()) {
		tile_set->disconnect_changed(callable_mp(this, &TileMapLayerGroup::_tile_set_changed));
	}

	tile_set = p_tileset;

	if (tile_set.is_valid()) {
		tile_set->connect_changed(callable_mp(this, &TileMapLayerGroup::_tile_set_changed));
	}

	for (int i = 0; i < get_child_count(); i++) {
		TileMapLayer *layer = Object::cast_to<TileMapLayer>(get_child(i));
		if (layer) {
			layer->notify_tile_map_layer_group_change(TileMapLayer::DIRTY_FLAGS_LAYER_GROUP_TILE_SET);
		}
	}
}

Ref<TileSet> TileMapLayerGroup::get_tileset() const {
	return tile_set;
}

TileMapLayerGroup::~TileMapLayerGroup() {
	if (tile_set.is_valid()) {
		tile_set->disconnect_changed(callable_mp(this, &TileMapLayerGroup::_tile_set_changed));
	}
}