/*************************************************************************/
/*  dialogs.cpp                                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* 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 "dialogs.h"
#include "line_edit.h"
#include "print_string.h"
#include "translation.h"

void WindowDialog::_post_popup() {

	dragging = false; //just in case
}

bool WindowDialog::has_point(const Point2 &p_point) const {

	int extra = get_constant("titlebar_height", "WindowDialog");
	Rect2 r(Point2(), get_size());
	r.pos.y -= extra;
	r.size.y += extra;
	return r.has_point(p_point);
}

void WindowDialog::_input_event(const InputEvent &p_event) {

	if (p_event.type == InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index == BUTTON_LEFT) {

		if (p_event.mouse_button.pressed && p_event.mouse_button.y < 0)
			dragging = true;
		else if (dragging && !p_event.mouse_button.pressed)
			dragging = false;
	}

	if (p_event.type == InputEvent::MOUSE_MOTION && dragging) {

		Point2 rel(p_event.mouse_motion.relative_x, p_event.mouse_motion.relative_y);
		Point2 pos = get_pos();

		pos += rel;

		if (pos.y < 0)
			pos.y = 0;

		set_pos(pos);
	}
}

void WindowDialog::_notification(int p_what) {

	switch (p_what) {

		case NOTIFICATION_DRAW: {

			RID ci = get_canvas_item();
			Size2 s = get_size();
			Ref<StyleBox> st = get_stylebox("panel", "WindowDialog");
			st->draw(ci, Rect2(Point2(), s));
			int th = get_constant("title_height", "WindowDialog");
			Color tc = get_color("title_color", "WindowDialog");
			Ref<Font> font = get_font("title_font", "WindowDialog");
			int ofs = (s.width - font->get_string_size(title).width) / 2;
			//int ofs = st->get_margin(MARGIN_LEFT);
			draw_string(font, Point2(ofs, -th + font->get_ascent()), title, tc, s.width - st->get_minimum_size().width);

		} break;
		case NOTIFICATION_THEME_CHANGED:
		case NOTIFICATION_ENTER_TREE: {

			close_button->set_normal_texture(get_icon("close", "WindowDialog"));
			close_button->set_pressed_texture(get_icon("close", "WindowDialog"));
			close_button->set_hover_texture(get_icon("close_hilite", "WindowDialog"));
			close_button->set_anchor(MARGIN_LEFT, ANCHOR_END);
			close_button->set_begin(Point2(get_constant("close_h_ofs", "WindowDialog"), -get_constant("close_v_ofs", "WindowDialog")));

		} break;
	}
}

void WindowDialog::_closed() {

	_close_pressed();
	hide();
}

void WindowDialog::set_title(const String &p_title) {

	title = XL_MESSAGE(p_title);
	update();
}

Size2 WindowDialog::get_minimum_size() const {

	Ref<Font> font = get_font("title_font", "WindowDialog");
	int msx = close_button->get_combined_minimum_size().x;
	msx += font->get_string_size(title).x;

	return Size2(msx, 1);
}

String WindowDialog::get_title() const {

	return title;
}

TextureButton *WindowDialog::get_close_button() {

	return close_button;
}

void WindowDialog::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("_input_event"), &WindowDialog::_input_event);
	ObjectTypeDB::bind_method(_MD("set_title", "title"), &WindowDialog::set_title);
	ObjectTypeDB::bind_method(_MD("get_title"), &WindowDialog::get_title);
	ObjectTypeDB::bind_method(_MD("_closed"), &WindowDialog::_closed);
	ObjectTypeDB::bind_method(_MD("get_close_button:TextureButton"), &WindowDialog::get_close_button);

	ADD_PROPERTY(PropertyInfo(Variant::STRING, "window/title", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT_INTL), _SCS("set_title"), _SCS("get_title"));
}

WindowDialog::WindowDialog() {

	//title="Hello!";
	dragging = false;
	close_button = memnew(TextureButton);
	add_child(close_button);
	close_button->connect("pressed", this, "_closed");
}

WindowDialog::~WindowDialog() {
}

void PopupDialog::_notification(int p_what) {

	if (p_what == NOTIFICATION_DRAW) {

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

PopupDialog::PopupDialog() {
}

PopupDialog::~PopupDialog() {
}

//

void AcceptDialog::_post_popup() {

	WindowDialog::_post_popup();
	get_ok()->grab_focus();
}

void AcceptDialog::_notification(int p_what) {

	if (p_what == NOTIFICATION_MODAL_CLOSE) {

		cancel_pressed();
	}
	if (p_what == NOTIFICATION_RESIZED) {

		_update_child_rect();
	}
}

void AcceptDialog::_builtin_text_entered(const String &p_text) {

	_ok_pressed();
}

void AcceptDialog::_ok_pressed() {

	if (hide_on_ok)
		hide();
	ok_pressed();
	emit_signal("confirmed");
}
void AcceptDialog::_close_pressed() {

	cancel_pressed();
}

String AcceptDialog::get_text() const {

	return label->get_text();
}
void AcceptDialog::set_text(String p_text) {

	label->set_text(p_text);
	minimum_size_changed();
	_update_child_rect();
}

void AcceptDialog::set_hide_on_ok(bool p_hide) {

	hide_on_ok = p_hide;
}

bool AcceptDialog::get_hide_on_ok() const {

	return hide_on_ok;
}

void AcceptDialog::register_text_enter(Node *p_line_edit) {

	ERR_FAIL_NULL(p_line_edit);
	p_line_edit->connect("text_entered", this, "_builtin_text_entered");
}

void AcceptDialog::_update_child_rect() {
	Size2 label_size = label->get_minimum_size();
	if (label->get_text().empty()) {
		label_size.height = 0;
	}
	int margin = get_constant("margin", "Dialogs");
	Size2 size = get_size();
	Size2 hminsize = hbc->get_combined_minimum_size();

	Vector2 cpos(margin, margin + label_size.height);
	Vector2 csize(size.x - margin * 2, size.y - margin * 3 - hminsize.y - label_size.height);

	if (child) {

		child->set_pos(cpos);
		child->set_size(csize);
	}

	cpos.y += csize.y + margin;
	csize.y = hminsize.y;

	hbc->set_pos(cpos);
	hbc->set_size(csize);
}

Size2 AcceptDialog::get_minimum_size() const {

	int margin = get_constant("margin", "Dialogs");
	Size2 minsize = label->get_combined_minimum_size();
	if (child) {

		Size2 cminsize = child->get_combined_minimum_size();
		minsize.x = MAX(cminsize.x, minsize.x);
		minsize.y = MAX(cminsize.y, minsize.y);
	}

	Size2 hminsize = hbc->get_combined_minimum_size();
	minsize.x = MAX(hminsize.x, minsize.x);
	minsize.y += hminsize.y;
	minsize.x += margin * 2;
	minsize.y += margin * 3; //one as separation between hbc and child

	Size2 wmsize = WindowDialog::get_minimum_size();
	minsize.x = MAX(wmsize.x, minsize.x);
	return minsize;
}

void AcceptDialog::set_child_rect(Control *p_child) {

	ERR_FAIL_COND(p_child->get_parent() != this);

	//p_child->set_area_as_parent_rect(get_constant("margin","Dialogs"));
	child = p_child;
	minimum_size_changed();
	_update_child_rect();
}

void AcceptDialog::remove_child_notify(Node *p_child) {

	if (p_child == child) {
		child = NULL;
	}
}

void AcceptDialog::_custom_action(const String &p_action) {

	emit_signal("custom_action", p_action);
	custom_action(p_action);
}

Button *AcceptDialog::add_button(const String &p_text, bool p_right, const String &p_action) {

	Button *button = memnew(Button);
	button->set_text(p_text);
	if (p_right) {
		hbc->add_child(button);
		hbc->add_spacer();
	} else {

		hbc->add_child(button);
		hbc->move_child(button, 0);
		hbc->add_spacer(true);
	}

	if (p_action != "") {
		button->connect("pressed", this, "_custom_action", varray(p_action));
	}

	return button;
}

Button *AcceptDialog::add_cancel(const String &p_cancel) {

	String c = p_cancel;
	if (p_cancel == "")
		c = RTR("Cancel");
	Button *b = swap_ok_cancel ? add_button(c, true) : add_button(c);
	b->connect("pressed", this, "_closed");
	return b;
}

void AcceptDialog::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("_ok"), &AcceptDialog::_ok_pressed);
	ObjectTypeDB::bind_method(_MD("get_ok"), &AcceptDialog::get_ok);
	ObjectTypeDB::bind_method(_MD("get_label"), &AcceptDialog::get_label);
	ObjectTypeDB::bind_method(_MD("set_hide_on_ok", "enabled"), &AcceptDialog::set_hide_on_ok);
	ObjectTypeDB::bind_method(_MD("get_hide_on_ok"), &AcceptDialog::get_hide_on_ok);
	ObjectTypeDB::bind_method(_MD("add_button:Button", "text", "right", "action"), &AcceptDialog::add_button, DEFVAL(false), DEFVAL(""));
	ObjectTypeDB::bind_method(_MD("add_cancel:Button", "name"), &AcceptDialog::add_cancel);
	ObjectTypeDB::bind_method(_MD("_builtin_text_entered"), &AcceptDialog::_builtin_text_entered);
	ObjectTypeDB::bind_method(_MD("register_text_enter:LineEdit", "line_edit"), &AcceptDialog::register_text_enter);
	ObjectTypeDB::bind_method(_MD("_custom_action"), &AcceptDialog::_custom_action);
	ObjectTypeDB::bind_method(_MD("set_text", "text"), &AcceptDialog::set_text);
	ObjectTypeDB::bind_method(_MD("get_text"), &AcceptDialog::get_text);

	ADD_SIGNAL(MethodInfo("confirmed"));
	ADD_SIGNAL(MethodInfo("custom_action", PropertyInfo(Variant::STRING, "action")));

	ADD_PROPERTYNZ(PropertyInfo(Variant::STRING, "dialog/text", PROPERTY_HINT_MULTILINE_TEXT, "", PROPERTY_USAGE_DEFAULT_INTL), _SCS("set_text"), _SCS("get_text"));
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "dialog/hide_on_ok"), _SCS("set_hide_on_ok"), _SCS("get_hide_on_ok"));
}

bool AcceptDialog::swap_ok_cancel = false;
void AcceptDialog::set_swap_ok_cancel(bool p_swap) {

	swap_ok_cancel = p_swap;
}

AcceptDialog::AcceptDialog() {

	int margin = get_constant("margin", "Dialogs");
	int button_margin = get_constant("button_margin", "Dialogs");

	label = memnew(Label);
	label->set_anchor(MARGIN_RIGHT, ANCHOR_END);
	label->set_anchor(MARGIN_BOTTOM, ANCHOR_END);
	label->set_begin(Point2(margin, margin));
	label->set_end(Point2(margin, button_margin + 10));
	//label->set_autowrap(true);
	add_child(label);

	hbc = memnew(HBoxContainer);
	add_child(hbc);

	hbc->add_spacer();
	ok = memnew(Button);
	ok->set_text(RTR("OK"));
	hbc->add_child(ok);
	hbc->add_spacer();

	ok->connect("pressed", this, "_ok");
	set_as_toplevel(true);

	hide_on_ok = true;
	set_title(RTR("Alert!"));

	child = NULL;
}

AcceptDialog::~AcceptDialog() {
}

void ConfirmationDialog::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("get_cancel:Button"), &ConfirmationDialog::get_cancel);
}

Button *ConfirmationDialog::get_cancel() {

	return cancel;
}

ConfirmationDialog::ConfirmationDialog() {

	set_title(RTR("Please Confirm..."));
	cancel = add_cancel();
}