godot/editor/array_property_edit.cpp

/*************************************************************************/
/*  array_property_edit.cpp                                              */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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#include "array_property_edit.h"

#include "editor_node.h"

#define ITEMS_PER_PAGE 100

Variant ArrayPropertyEdit::get_array() const {

	Object *o = ObjectDB::get_instance(obj);
	if (!o)
		return Array();
	Variant arr = o->get(property);
	if (!arr.is_array()) {
		Variant::CallError ce;
		arr = Variant::construct(default_type, NULL, 0, ce);
	}
	return arr;
}

void ArrayPropertyEdit::_notif_change() {
	_change_notify();
}
void ArrayPropertyEdit::_notif_changev(const String &p_v) {

	_change_notify(p_v.utf8().get_data());
}

void ArrayPropertyEdit::_set_size(int p_size) {

	Variant arr = get_array();
	arr.call("resize", p_size);
	Object *o = ObjectDB::get_instance(obj);
	if (!o)
		return;

	o->set(property, arr);
}

void ArrayPropertyEdit::_set_value(int p_idx, const Variant &p_value) {

	Variant arr = get_array();
	arr.set(p_idx, p_value);
	Object *o = ObjectDB::get_instance(obj);
	if (!o)
		return;

	o->set(property, arr);
}

bool ArrayPropertyEdit::_set(const StringName &p_name, const Variant &p_value) {

	String pn = p_name;

	if (pn.begins_with("array/")) {

		if (pn == "array/size") {

			Variant arr = get_array();
			int size = arr.call("size");

			int newsize = p_value;
			if (newsize == size)
				return true;

			UndoRedo *ur = EditorNode::get_singleton()->get_undo_redo();
			ur->create_action(TTR("Resize Array"));
			ur->add_do_method(this, "_set_size", newsize);
			ur->add_undo_method(this, "_set_size", size);
			if (newsize < size) {
				for (int i = newsize; i < size; i++) {
					ur->add_undo_method(this, "_set_value", i, arr.get(i));
				}
			} else if (newsize > size && size) {

				Variant init;
				Variant::CallError ce;
				init = Variant::construct(arr.get(size - 1).get_type(), NULL, 0, ce);
				for (int i = size; i < newsize; i++) {
					ur->add_do_method(this, "_set_value", i, init);
				}
			}
			ur->add_do_method(this, "_notif_change");
			ur->add_undo_method(this, "_notif_change");
			ur->commit_action();
			return true;
		}
		if (pn == "array/page") {
			page = p_value;
			_change_notify();
			return true;
		}

	} else if (pn.begins_with("indices")) {

		if (pn.find("_") != -1) {
			//type
			int idx = pn.get_slicec('/', 1).get_slicec('_', 0).to_int();

			int type = p_value;

			Variant arr = get_array();

			Variant value = arr.get(idx);
			if (value.get_type() != type && type >= 0 && type < Variant::VARIANT_MAX) {
				Variant::CallError ce;
				Variant new_value = Variant::construct(Variant::Type(type), NULL, 0, ce);
				UndoRedo *ur = EditorNode::get_singleton()->get_undo_redo();

				ur->create_action(TTR("Change Array Value Type"));
				ur->add_do_method(this, "_set_value", idx, new_value);
				ur->add_undo_method(this, "_set_value", idx, value);
				ur->add_do_method(this, "_notif_change");
				ur->add_undo_method(this, "_notif_change");
				ur->commit_action();
			}
			return true;

		} else {
			int idx = pn.get_slicec('/', 1).to_int();
			Variant arr = get_array();

			Variant value = arr.get(idx);
			UndoRedo *ur = EditorNode::get_singleton()->get_undo_redo();

			ur->create_action(TTR("Change Array Value"));
			ur->add_do_method(this, "_set_value", idx, p_value);
			ur->add_undo_method(this, "_set_value", idx, value);
			ur->add_do_method(this, "_notif_changev", p_name);
			ur->add_undo_method(this, "_notif_changev", p_name);
			ur->commit_action();
			return true;
		}
	}

	return false;
}

bool ArrayPropertyEdit::_get(const StringName &p_name, Variant &r_ret) const {

	Variant arr = get_array();
	//int size = arr.call("size");

	String pn = p_name;
	if (pn.begins_with("array/")) {

		if (pn == "array/size") {
			r_ret = arr.call("size");
			return true;
		}
		if (pn == "array/page") {
			r_ret = page;
			return true;
		}
	} else if (pn.begins_with("indices")) {

		if (pn.find("_") != -1) {
			//type
			int idx = pn.get_slicec('/', 1).get_slicec('_', 0).to_int();
			bool valid;
			r_ret = arr.get(idx, &valid);
			if (valid)
				r_ret = r_ret.get_type();
			return valid;

		} else {
			int idx = pn.get_slicec('/', 1).to_int();
			bool valid;
			r_ret = arr.get(idx, &valid);
			return valid;
		}
	}

	return false;
}

void ArrayPropertyEdit::_get_property_list(List<PropertyInfo> *p_list) const {

	Variant arr = get_array();
	int size = arr.call("size");

	p_list->push_back(PropertyInfo(Variant::INT, "array/size", PROPERTY_HINT_RANGE, "0,100000,1"));
	int pages = size / ITEMS_PER_PAGE;
	if (pages > 0)
		p_list->push_back(PropertyInfo(Variant::INT, "array/page", PROPERTY_HINT_RANGE, "0," + itos(pages) + ",1"));

	int offset = page * ITEMS_PER_PAGE;

	int items = MIN(size - offset, ITEMS_PER_PAGE);

	for (int i = 0; i < items; i++) {

		Variant v = arr.get(i + offset);
		if (arr.get_type() == Variant::ARRAY) {
			p_list->push_back(PropertyInfo(Variant::INT, "indices/" + itos(i + offset) + "_type", PROPERTY_HINT_ENUM, vtypes));
		}
		if (arr.get_type() != Variant::ARRAY || v.get_type() != Variant::NIL) {
			PropertyInfo pi(v.get_type(), "indices/" + itos(i + offset));
			if (v.get_type() == Variant::OBJECT) {
				pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
				pi.hint_string = "Resource";
			}
			p_list->push_back(pi);
		}
	}
}

void ArrayPropertyEdit::edit(Object *p_obj, const StringName &p_prop, Variant::Type p_deftype) {

	page = 0;
	property = p_prop;
	obj = p_obj->get_instance_ID();
	default_type = p_deftype;
}

Node *ArrayPropertyEdit::get_node() {

	Object *o = ObjectDB::get_instance(obj);
	if (!o)
		return NULL;

	return o->cast_to<Node>();
}

void ArrayPropertyEdit::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("_set_size"), &ArrayPropertyEdit::_set_size);
	ObjectTypeDB::bind_method(_MD("_set_value"), &ArrayPropertyEdit::_set_value);
	ObjectTypeDB::bind_method(_MD("_notif_change"), &ArrayPropertyEdit::_notif_change);
	ObjectTypeDB::bind_method(_MD("_notif_changev"), &ArrayPropertyEdit::_notif_changev);
}

ArrayPropertyEdit::ArrayPropertyEdit() {
	page = 0;
	for (int i = 0; i < Variant::VARIANT_MAX; i++) {

		if (i > 0)
			vtypes += ",";
		vtypes += Variant::get_type_name(Variant::Type(i));
	}
	default_type = Variant::NIL;
}