/*************************************************************************/
/*  editor_sub_scene.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 "editor_sub_scene.h"

#include "scene/gui/margin_container.h"
#include "scene/resources/packed_scene.h"

void EditorSubScene::_path_selected(const String& p_path) {

	path->set_text(p_path);
	_path_changed(p_path);

}

void EditorSubScene::_path_changed(const String& p_path) {

	tree->clear();


	if (scene) {
		memdelete(scene);
		scene=NULL;
	}

	if (p_path=="")
		return;

	Ref<PackedScene> ps = ResourceLoader::load(p_path,"PackedScene");

	if (ps.is_null())
		return;

	scene = ps->instance();
	if (!scene)
		return;

	_fill_tree(scene,NULL);



}

void EditorSubScene::_path_browse() {

	file_dialog->popup_centered_ratio();
}


void EditorSubScene::_notification(int p_what) {

	if (p_what==NOTIFICATION_VISIBILITY_CHANGED) {

		if (!is_visible_in_tree()) {


		}
	}
}


void EditorSubScene::_fill_tree(Node* p_node,TreeItem *p_parent) {

	TreeItem *it = tree->create_item(p_parent);
	it->set_metadata(0,p_node);
	it->set_text(0,p_node->get_name());
	it->set_editable(0,false);
	it->set_selectable(0,true);
	if (has_icon(p_node->get_class(),"EditorIcons")) {
		it->set_icon(0,get_icon(p_node->get_class(),"EditorIcons"));

	}

	for(int i=0;i<p_node->get_child_count();i++) {

		Node *c = p_node->get_child(i);
		if (c->get_owner()!=scene)
			continue;
		_fill_tree(c,it);
	}

}


void EditorSubScene::ok_pressed() {


	TreeItem *s = tree->get_selected();
	if (!s)
		return;
	Node *selnode = s->get_metadata(0);
	if (!selnode)
		return;
	emit_signal("subscene_selected");
	hide();
	clear();


}


void EditorSubScene::_reown(Node* p_node,List<Node*> *p_to_reown) {

	if (p_node==scene) {

		scene->set_filename("");
		p_to_reown->push_back(p_node);
	} else if (p_node->get_owner()==scene){

		p_to_reown->push_back(p_node);
	}

	for(int i=0;i<p_node->get_child_count();i++) {
		Node *c=p_node->get_child(i);
		_reown(c,p_to_reown);
	}
}

void EditorSubScene::move(Node* p_new_parent, Node* p_new_owner) {

	if (!scene) {
		return;
	}
	TreeItem *s = tree->get_selected();
	if (!s) {
		return;
	}

	Node *selnode = s->get_metadata(0);
	if (!selnode) {
		return;
	}

	List<Node*> to_reown;
	_reown(selnode,&to_reown);

	if (selnode!=scene) {
		selnode->get_parent()->remove_child(selnode);
	}

	p_new_parent->add_child(selnode);
	for (List<Node*>::Element *E=to_reown.front();E;E=E->next()) {
		E->get()->set_owner(p_new_owner);
	}

	if (selnode!=scene) {
		memdelete(scene);
	}
	scene=NULL;


	//return selnode;


}

void EditorSubScene::clear() {

	path->set_text("");
	_path_changed("");
}

void EditorSubScene::_bind_methods() {

	ClassDB::bind_method(_MD("_path_selected"),&EditorSubScene::_path_selected);
	ClassDB::bind_method(_MD("_path_changed"),&EditorSubScene::_path_changed);
	ClassDB::bind_method(_MD("_path_browse"),&EditorSubScene::_path_browse);
	ADD_SIGNAL( MethodInfo("subscene_selected"));

}


EditorSubScene::EditorSubScene() {

	scene=NULL;

	set_title(TTR("Select Node(s) to Import"));
	set_hide_on_ok(false);

	VBoxContainer *vb = memnew( VBoxContainer );
	add_child(vb);
	//set_child_rect(vb);

	HBoxContainer *hb = memnew( HBoxContainer );
	path = memnew( LineEdit );
	path->connect("text_entered",this,"_path_changed");
	hb->add_child(path);
	path->set_h_size_flags(SIZE_EXPAND_FILL);
	Button *b = memnew( Button );
	b->set_text(" .. ");
	hb->add_child(b);
	b->connect("pressed",this,"_path_browse");
	vb->add_margin_child(TTR("Scene Path:"),hb);

	tree = memnew( Tree );
	tree->set_v_size_flags(SIZE_EXPAND_FILL);
	vb->add_margin_child(TTR("Import From Node:"),tree,true);
	tree->connect("item_activated",this,"_ok",make_binds(),CONNECT_DEFERRED);

	file_dialog = memnew( EditorFileDialog );
	List<String> extensions;
	ResourceLoader::get_recognized_extensions_for_type("PackedScene",&extensions);

	for(List<String>::Element *E = extensions.front();E;E=E->next() ) {

		file_dialog->add_filter("*."+E->get());
	}

	file_dialog->set_mode(EditorFileDialog::MODE_OPEN_FILE);
	add_child(file_dialog);
	file_dialog->connect("file_selected",this,"_path_selected");

}