/*************************************************************************/
/*  call_dialog.cpp                                                      */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/
#include "call_dialog.h"

#include "object_type_db.h"
#include "print_string.h"
#include "scene/gui/label.h"

class CallDialogParams : public Object {

	OBJ_TYPE(CallDialogParams, Object);

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

		values[p_name] = p_value;
		return true;
	}

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

		if (values.has(p_name)) {
			r_ret = values[p_name];
			return true;
		}
		return false;
	}

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

		for (int i = 0; i < method.arguments.size(); i++)
			p_list->push_back(method.arguments[i]);
	}

	MethodInfo method;
	HashMap<String, Variant> values;

	CallDialogParams() {}
};

void CallDialog::_notification(int p_what) {

	if (p_what == NOTIFICATION_READY) {

		call->connect("pressed", this, "_call");
		cancel->connect("pressed", this, "_cancel");
		//filter->get_path()->connect("text_changed", this,"_text_changed");
		_update_method_list();
	}

	if (p_what == NOTIFICATION_EXIT_TREE) {

		call->disconnect("pressed", this, "_call");
		cancel->disconnect("pressed", this, "_cancel");

		//filter->get_path()->connect("text_changed", this,"_text_changed");
		_update_method_list();
	}

	if (p_what == NOTIFICATION_DRAW) {

		RID ci = get_canvas_item();
		get_stylebox("panel", "PopupMenu")->draw(ci, Rect2(Point2(), get_size()));
	}
}

void CallDialog::_call() {

	if (!tree->get_selected())
		return;

	TreeItem *item = tree->get_selected();
	ERR_FAIL_COND(!item);
	int idx = item->get_metadata(0);
	ERR_FAIL_INDEX(idx, methods.size());
	MethodInfo &m = methods[idx];

	Variant args[VARIANT_ARG_MAX];

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

		if (i >= m.arguments.size())
			continue;

		if (call_params->values.has(m.arguments[i].name))
			args[i] = call_params->values[m.arguments[i].name];
	}

	Variant ret = object->call(m.name, args[0], args[1], args[2], args[3], args[4]);
	if (ret.get_type() != Variant::NIL)
		return_value->set_text(ret);
	else
		return_value->set_text("");
}

void CallDialog::_cancel() {

	hide();
}

void CallDialog::_item_selected() {

	TreeItem *item = tree->get_selected();
	ERR_FAIL_COND(!item);

	if (item->get_metadata(0).get_type() == Variant::NIL) {

		call->set_disabled(true);
		return;
	}

	call->set_disabled(false);

	int idx = item->get_metadata(0);
	ERR_FAIL_INDEX(idx, methods.size());

	MethodInfo &m = methods[idx];

	call_params->values.clear();
	call_params->method = m;

	property_editor->edit(call_params);
	property_editor->update_tree();
}

void CallDialog::_update_method_list() {

	tree->clear();
	if (!object)
		return;

	TreeItem *root = tree->create_item();

	List<MethodInfo> method_list;
	object->get_method_list(&method_list);
	method_list.sort();
	methods.clear();

	List<String> inheritance_list;

	String type = object->get_type();

	while (type != "") {
		inheritance_list.push_back(type);
		type = ObjectTypeDB::type_inherits_from(type);
	}

	TreeItem *selected_item = NULL;

	for (int i = 0; i < inheritance_list.size(); i++) {

		String type = inheritance_list[i];
		String parent_type = ObjectTypeDB::type_inherits_from(type);

		TreeItem *type_item = NULL;

		List<MethodInfo>::Element *N, *E = method_list.front();

		while (E) {

			N = E->next();

			if (parent_type != "" && ObjectTypeDB::get_method(parent_type, E->get().name) != NULL) {
				E = N;
				continue;
			}

			if (!type_item) {
				type_item = tree->create_item(root);
				type_item->set_text(0, type);
				if (has_icon(type, "EditorIcons"))
					type_item->set_icon(0, get_icon(type, "EditorIcons"));
			}

			TreeItem *method_item = tree->create_item(type_item);
			method_item->set_text(0, E->get().name);
			method_item->set_metadata(0, methods.size());
			if (E->get().name == selected)
				selected_item = method_item;
			methods.push_back(E->get());

			method_list.erase(E);
			E = N;
		}
	}

	if (selected_item)
		selected_item->select(0);
}

void CallDialog::_bind_methods() {

	ObjectTypeDB::bind_method("_call", &CallDialog::_call);
	ObjectTypeDB::bind_method("_cancel", &CallDialog::_cancel);
	ObjectTypeDB::bind_method("_item_selected", &CallDialog::_item_selected);
}

void CallDialog::set_object(Object *p_object, StringName p_selected) {

	object = p_object;
	selected = p_selected;
	property_editor->edit(NULL);
	call->set_disabled(true);
	return_value->clear();

	_update_method_list();
	method_label->set_text(vformat(TTR("Method List For '%s':"), p_object->get_type()));
}

CallDialog::CallDialog() {

	object = NULL;

	call = memnew(Button);
	call->set_anchor(MARGIN_LEFT, ANCHOR_END);
	call->set_anchor(MARGIN_TOP, ANCHOR_END);
	call->set_anchor(MARGIN_RIGHT, ANCHOR_END);
	call->set_anchor(MARGIN_BOTTOM, ANCHOR_END);
	call->set_begin(Point2(70, 29));
	call->set_end(Point2(15, 15));
	call->set_text(TTR("Call"));

	add_child(call);

	cancel = memnew(Button);
	cancel->set_anchor(MARGIN_TOP, ANCHOR_END);
	cancel->set_anchor(MARGIN_BOTTOM, ANCHOR_END);
	cancel->set_begin(Point2(15, 29));
	cancel->set_end(Point2(70, 15));
	cancel->set_text(TTR("Close"));

	add_child(cancel);

	tree = memnew(Tree);

	tree->set_anchor(MARGIN_RIGHT, ANCHOR_RATIO);
	tree->set_anchor(MARGIN_BOTTOM, ANCHOR_END);
	tree->set_begin(Point2(20, 50));
	tree->set_margin(MARGIN_BOTTOM, 44);
	tree->set_margin(MARGIN_RIGHT, 0.5);
	tree->set_select_mode(Tree::SELECT_ROW);
	add_child(tree);

	tree->connect("item_selected", this, "_item_selected");
	tree->set_hide_root(true);

	property_editor = memnew(PropertyEditor);

	property_editor->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 15);
	property_editor->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 50);
	property_editor->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_RATIO, 0.55);
	property_editor->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 90);
	property_editor->get_scene_tree()->set_hide_root(true);
	property_editor->hide_top_label();

	add_child(property_editor);
	method_label = memnew(Label);
	method_label->set_pos(Point2(15, 25));
	method_label->set_text(TTR("Method List:"));

	add_child(method_label);

	Label *label = memnew(Label);
	label->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_RATIO, 0.53);
	label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 25);
	label->set_text(TTR("Arguments:"));

	add_child(label);

	return_label = memnew(Label);
	return_label->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_RATIO, 0.53);
	return_label->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, 85);
	return_label->set_text(TTR("Return:"));

	add_child(return_label);

	return_value = memnew(LineEdit);
	return_value->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_RATIO, 0.55);
	return_value->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 15);
	return_value->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, 65);

	add_child(return_value);

	/*
	label = memnew( Label );
	label->set_anchor( MARGIN_TOP, ANCHOR_END );
	label->set_anchor( MARGIN_BOTTOM, ANCHOR_END );

	label->set_begin( Point2( 15,54) );
	label->set_end( Point2( 16,44) );
	label->set_text("Parameters:");

	add_child(label);
	*/

	call_params = memnew(CallDialogParams);
	set_as_toplevel(true);
}

CallDialog::~CallDialog() {
	memdelete(call_params);
}