/*************************************************************************/
/*  tree.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 "tree.h"
#include "print_string.h"
#include "os/os.h"
#include "os/keyboard.h"
#include "globals.h"
#include "os/input.h"
#include "scene/main/viewport.h"



void TreeItem::move_to_top() {

	if (!parent || parent->childs==this)
		return; //already on top
	TreeItem *prev = get_prev();
	prev->next=next;
	next=parent->childs;
	parent->childs=this;
}

void TreeItem::move_to_bottom() {

	if (!parent || !next)
		return;

	while(next) {

		if (parent->childs==this)
			parent->childs=next;
		TreeItem *n=next;
		next=n->next;
		n->next=this;
	}
}


Size2 TreeItem::Cell::get_icon_size() const {

	if (icon.is_null())
		return Size2();
	if (icon_region==Rect2i())
		return icon->get_size();
	else
		return icon_region.size;
}

void TreeItem::Cell::draw_icon(const RID& p_where, const Point2& p_pos, const Size2& p_size) const{

	if (icon.is_null())
		return;

	Size2i dsize=(p_size==Size2()) ? icon->get_size() : p_size;

	if (icon_region==Rect2i()) {

		icon->draw_rect_region(p_where,Rect2(p_pos,dsize),Rect2(Point2(),icon->get_size()));
	} else {

		icon->draw_rect_region(p_where,Rect2(p_pos,dsize),icon_region);
	}

}


void TreeItem::_changed_notify(int p_cell) {

	tree->item_changed(p_cell,this);
}

void TreeItem::_changed_notify() {

	tree->item_changed(-1,this);
}

void TreeItem::_cell_selected(int p_cell) {

	tree->item_selected(p_cell,this);
}

void TreeItem::_cell_deselected(int p_cell) {

	tree->item_deselected(p_cell,this);
}

/* cell mode */
void TreeItem::set_cell_mode( int p_column, TreeCellMode p_mode ) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	Cell&c=cells[p_column];
	c.mode=p_mode;
	c.min=0;
	c.max=100;
	c.step=1;
	c.val=0;
	c.checked=false;
	c.icon=Ref<Texture>();
	c.text="";
	c.icon_max_w=0;
	_changed_notify(p_column);
}

TreeItem::TreeCellMode TreeItem::get_cell_mode( int p_column ) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), TreeItem::CELL_MODE_STRING );
	return cells[p_column].mode;
}


/* check mode */
void TreeItem::set_checked(int p_column,bool p_checked) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].checked=p_checked;
	_changed_notify(p_column);

}

bool TreeItem::is_checked(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false );
	return cells[p_column].checked;
}


void TreeItem::set_text(int p_column,String p_text) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].text=p_text;

	if (cells[p_column].mode==TreeItem::CELL_MODE_RANGE || cells[p_column].mode==TreeItem::CELL_MODE_RANGE_EXPRESSION) {

		cells[p_column].min=0;
		cells[p_column].max=p_text.get_slice_count(",");
		cells[p_column].step=0;
	}
	_changed_notify(p_column);

}

String TreeItem::get_text(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), "" );
	return cells[p_column].text;

}


void TreeItem::set_icon(int p_column,const Ref<Texture>& p_icon) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].icon=p_icon;
	_changed_notify(p_column);

}

Ref<Texture> TreeItem::get_icon(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), Ref<Texture>() );
	return cells[p_column].icon;

}

void TreeItem::set_icon_region(int p_column,const Rect2& p_icon_region) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].icon_region=p_icon_region;
	_changed_notify(p_column);
}

Rect2 TreeItem::get_icon_region(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), Rect2() );
	return cells[p_column].icon_region;
}

void TreeItem::set_icon_max_width(int p_column,int p_max) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].icon_max_w=p_max;
	_changed_notify(p_column);
}

int TreeItem::get_icon_max_width(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), 0);
	return cells[p_column].icon_max_w;

}


/* range works for mode number or mode combo */
void TreeItem::set_range(int p_column,double p_value) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	if (cells[p_column].step>0)
		p_value=Math::stepify( p_value, cells[p_column].step );
	if (p_value<cells[p_column].min)
		p_value=cells[p_column].min;
	if (p_value>cells[p_column].max)
		p_value=cells[p_column].max;

	cells[p_column].val=p_value;
	_changed_notify(p_column);

}

double TreeItem::get_range(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), 0 );
	return cells[p_column].val;
}


bool TreeItem::is_range_exponential(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false);
	return cells[p_column].expr;

}
void TreeItem::set_range_config(int p_column,double p_min,double p_max,double p_step,bool p_exp) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].min=p_min;
	cells[p_column].max=p_max;
	cells[p_column].step=p_step;
	cells[p_column].expr=p_exp;
	_changed_notify(p_column);

}

void TreeItem::get_range_config(int p_column,double& r_min,double& r_max,double &r_step) const {

	ERR_FAIL_INDEX( p_column, cells.size() );
	r_min=cells[p_column].min;
	r_max=cells[p_column].max;
	r_step=cells[p_column].step;

}

void TreeItem::set_metadata(int p_column,const Variant& p_meta) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].meta=p_meta;

}

Variant TreeItem::get_metadata(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), Variant() );

	return cells[p_column].meta;
}

void TreeItem::set_custom_draw(int p_column,Object *p_object,const StringName& p_callback) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	ERR_FAIL_NULL(p_object);

	cells[p_column].custom_draw_obj=p_object->get_instance_ID();
	cells[p_column].custom_draw_callback=p_callback;

}

void TreeItem::set_collapsed(bool p_collapsed) {

	if (collapsed==p_collapsed)
		return;
	collapsed=p_collapsed;
	TreeItem *ci = tree->selected_item;
	if (ci) {

		while (ci && ci!=this) {

			ci=ci->parent;
		}
		if (ci) { // collapsing cursor/selectd, move it!

			if (tree->select_mode==Tree::SELECT_MULTI) {

				tree->selected_item=this;
				emit_signal("cell_selected");
			} else {

				select(tree->selected_col);
			}

			tree->update();
		}

	}

	_changed_notify();
	if (tree)
		tree->emit_signal("item_collapsed",this);

}

bool TreeItem::is_collapsed() {

	return collapsed;
}


TreeItem *TreeItem::get_next() {

	return next;
}

TreeItem *TreeItem::get_prev() {

	if (!parent || parent->childs==this)
		return NULL;

	TreeItem *prev = parent->childs;
	while(prev && prev->next!=this)
		prev=prev->next;

	return prev;
}

TreeItem *TreeItem::get_parent() {

	return parent;
}

TreeItem *TreeItem::get_children() {

	return childs;
}


TreeItem *TreeItem::get_prev_visible() {

	TreeItem *current=this;

	TreeItem *prev = current->get_prev();


	if (!prev) {

		current=current->parent;
		if (!current || (current==tree->root && tree->hide_root))
			return NULL;
	} else {


		current=prev;
		while( !current->collapsed && current->childs ) {
			//go to the very end

			current = current->childs;
			while (current->next)
				current=current->next;
		}


	}

	return current;
}


TreeItem *TreeItem::get_next_visible() {

	TreeItem *current=this;


	if (!current->collapsed && current->childs) {

		current=current->childs;

	} else if (current->next) {

		current=current->next;
	} else {

		while(current && !current->next) {

			current=current->parent;
		}

		if (current==NULL)
			return NULL;
		else
			current=current->next;
	}

	return current;
}

void TreeItem::remove_child(TreeItem *p_item) {

	ERR_FAIL_NULL(p_item);
	TreeItem **c=&childs;

	while (*c) {

		if ( (*c) == p_item ) {

			TreeItem *aux = *c;

			*c=(*c)->next;

			aux->parent = NULL;
			return;
		}

		c=&(*c)->next;
	}

	ERR_FAIL();
}


void TreeItem::set_selectable(int p_column,bool p_selectable) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].selectable=p_selectable;
}

bool TreeItem::is_selectable(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false );
	return cells[p_column].selectable;

}

bool TreeItem::is_selected(int p_column) {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false );
	return cells[p_column].selectable && cells[p_column].selected;
}

void TreeItem::set_as_cursor(int p_column) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	if (!tree)
		return;
	if (tree->select_mode!=Tree::SELECT_MULTI)
		return;
	tree->selected_item=this;
	tree->selected_col=p_column;
	tree->update();
}

void TreeItem::select(int p_column) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	_cell_selected(p_column);
}

void TreeItem::deselect(int p_column) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	_cell_deselected(p_column);
}

void TreeItem::add_button(int p_column, const Ref<Texture>& p_button, int p_id, bool p_disabled) {


	ERR_FAIL_INDEX( p_column, cells.size() );
	ERR_FAIL_COND(!p_button.is_valid());
	TreeItem::Cell::Button button;
	button.texture=p_button;
	if (p_id<0)
		p_id=cells[p_column].buttons.size();
	button.id=p_id;
	button.disabled=p_disabled;
	cells[p_column].buttons.push_back(button);
	_changed_notify(p_column);
}

int TreeItem::get_button_count(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), -1 );
	return cells[p_column].buttons.size();

}
Ref<Texture> TreeItem::get_button(int p_column,int p_idx) const {
	ERR_FAIL_INDEX_V( p_column, cells.size(), Ref<Texture>() );
	ERR_FAIL_INDEX_V( p_idx, cells[p_column].buttons.size(), Ref<Texture>() );
	return cells[p_column].buttons[p_idx].texture;

}
int TreeItem::get_button_id(int p_column,int p_idx) const {
	ERR_FAIL_INDEX_V( p_column, cells.size(), -1 );
	ERR_FAIL_INDEX_V( p_idx, cells[p_column].buttons.size(), -1 );
	return cells[p_column].buttons[p_idx].id;

}
void TreeItem::erase_button(int p_column,int p_idx) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	ERR_FAIL_INDEX( p_idx, cells[p_column].buttons.size() );
	cells[p_column].buttons.remove(p_idx);
	_changed_notify(p_column);
}

int TreeItem::get_button_by_id(int p_column,int p_id) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(),-1 );
	for(int i=0;i<cells[p_column].buttons.size();i++) {

		if (cells[p_column].buttons[i].id==p_id)
			return i;
	}

	return -1;
}

bool TreeItem::is_button_disabled(int p_column, int p_idx) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false );
	ERR_FAIL_INDEX_V( p_idx, cells[p_column].buttons.size(), false );

	return cells[p_column].buttons[p_idx].disabled;

}
void TreeItem::set_button(int p_column,int p_idx,const Ref<Texture>& p_button){

	ERR_FAIL_COND(  p_button.is_null() );
	ERR_FAIL_INDEX( p_column, cells.size() );
	ERR_FAIL_INDEX( p_idx, cells[p_column].buttons.size() );
	cells[p_column].buttons[p_idx].texture=p_button;
	_changed_notify(p_column);

}

void TreeItem::set_button_color(int p_column,int p_idx,const Color& p_color) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	ERR_FAIL_INDEX( p_idx, cells[p_column].buttons.size() );
	cells[p_column].buttons[p_idx].color=p_color;
	_changed_notify(p_column);

}

void TreeItem::set_editable(int p_column,bool p_editable) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].editable=p_editable;
	_changed_notify(p_column);
}

bool TreeItem::is_editable(int p_column) {

	ERR_FAIL_INDEX_V( p_column, cells.size(), false );
	return cells[p_column].editable;
}


void TreeItem::set_custom_color(int p_column,const Color& p_color) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].custom_color=true;
	cells[p_column].color=p_color;
	_changed_notify(p_column);
}
Color TreeItem::get_custom_color(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), Color() );
	if (!cells[p_column].custom_color)
		return Color();
	return cells[p_column].color;

}
void TreeItem::clear_custom_color(int p_column) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].custom_color=false;
	cells[p_column].color=Color();;
	_changed_notify(p_column);
}


void TreeItem::set_tooltip(int p_column, const String& p_tooltip) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].tooltip=p_tooltip;

}

String TreeItem::get_tooltip(int p_column) const{

	ERR_FAIL_INDEX_V( p_column, cells.size(), "" );
	return cells[p_column].tooltip;
}

void TreeItem::set_custom_bg_color(int p_column,const Color& p_color,bool p_bg_outline) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].custom_bg_color=true;
	cells[p_column].custom_bg_outline=p_bg_outline;
	cells[p_column].bg_color=p_color;
	_changed_notify(p_column);
}

void TreeItem::clear_custom_bg_color(int p_column) {

	ERR_FAIL_INDEX( p_column, cells.size() );
	cells[p_column].custom_bg_color=false;
	cells[p_column].bg_color=Color();;
	_changed_notify(p_column);
}

Color TreeItem::get_custom_bg_color(int p_column) const {

	ERR_FAIL_INDEX_V( p_column, cells.size(), Color() );
	if (!cells[p_column].custom_bg_color)
		return Color();
	return cells[p_column].bg_color;

}

void TreeItem::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("set_cell_mode","column","mode"),&TreeItem::set_cell_mode);
	ObjectTypeDB::bind_method(_MD("get_cell_mode","column"),&TreeItem::get_cell_mode);

	ObjectTypeDB::bind_method(_MD("set_checked","column","checked"),&TreeItem::set_checked);
	ObjectTypeDB::bind_method(_MD("is_checked","column"),&TreeItem::is_checked);

	ObjectTypeDB::bind_method(_MD("set_text","column","text"),&TreeItem::set_text);
	ObjectTypeDB::bind_method(_MD("get_text","column"),&TreeItem::get_text);

	ObjectTypeDB::bind_method(_MD("set_icon","column","texture:Texture"),&TreeItem::set_icon);
	ObjectTypeDB::bind_method(_MD("get_icon:Texture","column"),&TreeItem::get_icon);

	ObjectTypeDB::bind_method(_MD("set_icon_region","column","region"),&TreeItem::set_icon_region);
	ObjectTypeDB::bind_method(_MD("get_icon_region","column"),&TreeItem::get_icon_region);

	ObjectTypeDB::bind_method(_MD("set_icon_max_width","column","width"),&TreeItem::set_icon_max_width);
	ObjectTypeDB::bind_method(_MD("get_icon_max_width","column"),&TreeItem::get_icon_max_width);

	ObjectTypeDB::bind_method(_MD("set_range","column","value"),&TreeItem::set_range);
	ObjectTypeDB::bind_method(_MD("get_range","column"),&TreeItem::get_range);
	ObjectTypeDB::bind_method(_MD("set_range_config","column","min","max","step","expr"),&TreeItem::set_range_config,DEFVAL(false));
	ObjectTypeDB::bind_method(_MD("get_range_config","column"),&TreeItem::_get_range_config);

	ObjectTypeDB::bind_method(_MD("set_metadata","column","meta"),&TreeItem::set_metadata);
	ObjectTypeDB::bind_method(_MD("get_metadata","column"),&TreeItem::get_metadata);

	ObjectTypeDB::bind_method(_MD("set_custom_draw","column","object","callback"),&TreeItem::set_custom_draw);

	ObjectTypeDB::bind_method(_MD("set_collapsed","enable"),&TreeItem::set_collapsed);
	ObjectTypeDB::bind_method(_MD("is_collapsed"),&TreeItem::is_collapsed);

	ObjectTypeDB::bind_method(_MD("get_next:TreeItem"),&TreeItem::get_next);
	ObjectTypeDB::bind_method(_MD("get_prev:TreeItem"),&TreeItem::get_prev);
	ObjectTypeDB::bind_method(_MD("get_parent:TreeItem"),&TreeItem::get_parent);
	ObjectTypeDB::bind_method(_MD("get_children:TreeItem"),&TreeItem::get_children);

	ObjectTypeDB::bind_method(_MD("get_next_visible:TreeItem"),&TreeItem::get_next_visible);
	ObjectTypeDB::bind_method(_MD("get_prev_visible:TreeItem"),&TreeItem::get_prev_visible);

	ObjectTypeDB::bind_method(_MD("remove_child:TreeItem","child"),&TreeItem::_remove_child);

	ObjectTypeDB::bind_method(_MD("set_selectable","column","selectable"),&TreeItem::set_selectable);
	ObjectTypeDB::bind_method(_MD("is_selectable","column"),&TreeItem::is_selectable);

	ObjectTypeDB::bind_method(_MD("is_selected","column"),&TreeItem::is_selected);
	ObjectTypeDB::bind_method(_MD("select","column"),&TreeItem::select);
	ObjectTypeDB::bind_method(_MD("deselect","column"),&TreeItem::deselect);

	ObjectTypeDB::bind_method(_MD("set_editable","column","enabled"),&TreeItem::set_editable);
	ObjectTypeDB::bind_method(_MD("is_editable","column"),&TreeItem::is_editable);

	ObjectTypeDB::bind_method(_MD("set_custom_color","column","color"),&TreeItem::set_custom_color);
	ObjectTypeDB::bind_method(_MD("clear_custom_color","column"),&TreeItem::clear_custom_color);

	ObjectTypeDB::bind_method(_MD("set_custom_bg_color","column","color","just_outline"),&TreeItem::set_custom_bg_color,DEFVAL(false));
	ObjectTypeDB::bind_method(_MD("clear_custom_bg_color","column"),&TreeItem::clear_custom_bg_color);
	ObjectTypeDB::bind_method(_MD("get_custom_bg_color","column"),&TreeItem::get_custom_bg_color);

	ObjectTypeDB::bind_method(_MD("add_button","column","button:Texture","button_idx","disabled"),&TreeItem::add_button,DEFVAL(-1),DEFVAL(false));
	ObjectTypeDB::bind_method(_MD("get_button_count","column"),&TreeItem::get_button_count);
	ObjectTypeDB::bind_method(_MD("get_button:Texture","column","button_idx"),&TreeItem::get_button);
	ObjectTypeDB::bind_method(_MD("set_button","column","button_idx","button:Texture"),&TreeItem::set_button);
	ObjectTypeDB::bind_method(_MD("erase_button","column","button_idx"),&TreeItem::erase_button);
	ObjectTypeDB::bind_method(_MD("is_button_disabled","column","button_idx"),&TreeItem::is_button_disabled);

	ObjectTypeDB::bind_method(_MD("set_tooltip","column","tooltip"),&TreeItem::set_tooltip);
	ObjectTypeDB::bind_method(_MD("get_tooltip","column"),&TreeItem::get_tooltip);

	ObjectTypeDB::bind_method(_MD("move_to_top"),&TreeItem::move_to_top);
	ObjectTypeDB::bind_method(_MD("move_to_bottom"),&TreeItem::move_to_bottom);

	BIND_CONSTANT( CELL_MODE_STRING );
	BIND_CONSTANT( CELL_MODE_CHECK );
	BIND_CONSTANT( CELL_MODE_RANGE );
	BIND_CONSTANT( CELL_MODE_RANGE_EXPRESSION );
	BIND_CONSTANT( CELL_MODE_ICON );
	BIND_CONSTANT( CELL_MODE_CUSTOM );


}

void TreeItem::clear_children() {

	TreeItem *c=childs;
	while (c) {

		TreeItem *aux=c;
		c=c->get_next();
		aux->parent=0; // so it wont try to recursively autoremove from me in here
		memdelete( aux );
	}

	childs = 0;
};

TreeItem::TreeItem(Tree *p_tree) {

	tree=p_tree;
	collapsed=false;

	parent=0; // parent item
	next=0; // next in list
	childs=0; //child items

}

TreeItem::~TreeItem() {

	clear_children();

	if (parent)
		parent->remove_child(this);

	if (tree && tree->root==this) {

		tree->root=0;
	}

	if (tree && tree->popup_edited_item==this) {
		tree->popup_edited_item=NULL;
		tree->pressing_for_editor=false;

	}

	if (tree && tree->selected_item==this)
		tree->selected_item=NULL;


	if (tree && tree->drop_mode_over==this)
		tree->drop_mode_over=NULL;

	if (tree && tree->single_select_defer==this)
		tree->single_select_defer=NULL;

	if (tree && tree->edited_item==this) {
		tree->edited_item=NULL;
		tree->pressing_for_editor=false;
	}


}

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/**********************************************/





void Tree::update_cache() {

	cache.font = get_font("font");
	cache.tb_font = get_font("title_button_font");
	cache.bg = get_stylebox("bg");
	cache.selected= get_stylebox("selected");
	cache.selected_focus= get_stylebox("selected_focus");
	cache.cursor = get_stylebox("cursor");
	cache.cursor_unfocus = get_stylebox("cursor_unfocused");
	cache.button_pressed= get_stylebox("button_pressed");

	cache.checked=get_icon("checked");
	cache.unchecked=get_icon("unchecked");
	cache.arrow_collapsed=get_icon("arrow_collapsed");
	cache.arrow =get_icon("arrow");
	cache.select_arrow =get_icon("select_arrow");
	cache.updown=get_icon("updown");

	cache.font_color=get_color("font_color");
	cache.font_color_selected=get_color("font_color_selected");
	cache.guide_color=get_color("guide_color");
	cache.drop_position_color=get_color("drop_position_color");
	cache.hseparation=get_constant("hseparation");
	cache.vseparation=get_constant("vseparation");
	cache.item_margin=get_constant("item_margin");
	cache.button_margin=get_constant("button_margin");
	cache.guide_width=get_constant("guide_width");
	cache.draw_relationship_lines=get_constant("draw_relationship_lines");
	cache.relationship_line_color=get_color("relationship_line_color");
	cache.scroll_border=get_constant("scroll_border");
	cache.scroll_speed=get_constant("scroll_speed");

	cache.title_button = get_stylebox("title_button_normal");
	cache.title_button_pressed = get_stylebox("title_button_pressed");
	cache.title_button_hover = get_stylebox("title_button_hover");
	cache.title_button_color = get_color("title_button_color");

	v_scroll->set_custom_step(cache.font->get_height());

}

int Tree::compute_item_height(TreeItem *p_item) const {

	if (p_item==root && hide_root)
		return 0;

	int height=cache.font->get_height();


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


		for(int j=0;j<p_item->cells[i].buttons.size();j++) {


			Size2i s;// = cache.button_pressed->get_minimum_size();
			s+= p_item->cells[i].buttons[j].texture->get_size();
			if (s.height>height)
				height=s.height;
		}

		switch(p_item->cells[i].mode) {

			case TreeItem::CELL_MODE_CHECK: {

				int check_icon_h = cache.checked->get_height();
				if (height<check_icon_h)
					height=check_icon_h;



			}
			case TreeItem::CELL_MODE_STRING:
			case TreeItem::CELL_MODE_CUSTOM:
			case TreeItem::CELL_MODE_ICON: {

				Ref<Texture> icon = p_item->cells[i].icon;
				if (!icon.is_null()) {

					Size2i s = p_item->cells[i].get_icon_size();
					if (p_item->cells[i].icon_max_w>0 && s.width > p_item->cells[i].icon_max_w ) {
						s.height=s.height * p_item->cells[i].icon_max_w / s.width;
					}
					if (s.height > height )
						height=s.height;
				}

			} break;
			default: {}
		}
	}


	height += cache.vseparation;

	return height;

}

int Tree::get_item_height(TreeItem *p_item) const {

	int height=compute_item_height(p_item);
	height+=cache.vseparation;

	if (!p_item->collapsed) { /* if not collapsed, check the childs */

		TreeItem *c=p_item->childs;

		while (c) {

			height += get_item_height( c );

			c=c->next;
		}
	}

	return height;
}


void Tree::draw_item_rect(const TreeItem::Cell& p_cell,const Rect2i& p_rect,const Color& p_color) {

	Rect2i rect=p_rect;

	RID ci = get_canvas_item();
	if (!p_cell.icon.is_null()) {
		Size2i bmsize = p_cell.get_icon_size();

		if (p_cell.icon_max_w>0 && bmsize.width > p_cell.icon_max_w) {
			bmsize.height = bmsize.height * p_cell.icon_max_w / bmsize.width;
			bmsize.width=p_cell.icon_max_w;
		}

		p_cell.draw_icon(ci,rect.pos + Size2i(0,Math::floor((rect.size.y-bmsize.y)/2)),bmsize);
		rect.pos.x+=bmsize.x+cache.hseparation;
		rect.size.x-=bmsize.x+cache.hseparation;

	}

//	if (p_tool)
//		rect.size.x-=Math::floor(rect.size.y/2);

	Ref<Font> font = cache.font;

	rect.pos.y+=Math::floor((rect.size.y-font->get_height())/2.0) +font->get_ascent();
	font->draw(ci,rect.pos,p_cell.text,p_color,rect.size.x);

}

#if 0
void Tree::draw_item_text(String p_text,const Ref<Texture>& p_icon,int p_icon_max_w,bool p_tool,Rect2i p_rect,const Color& p_color) {

	RID ci = get_canvas_item();
	if (!p_icon.is_null()) {
		Size2i bmsize = p_icon->get_size();
		if (p_icon_max_w>0 && bmsize.width > p_icon_max_w) {
			bmsize.height = bmsize.height * p_icon_max_w / bmsize.width;
			bmsize.width=p_icon_max_w;
		}

		draw_texture_rect(p_icon,Rect2(p_rect.pos + Size2i(0,Math::floor((p_rect.size.y-bmsize.y)/2)),bmsize));
		p_rect.pos.x+=bmsize.x+cache.hseparation;
		p_rect.size.x-=bmsize.x+cache.hseparation;

	}

	if (p_tool)
		p_rect.size.x-=Math::floor(p_rect.size.y/2);

	Ref<Font> font = cache.font;

	p_rect.pos.y+=Math::floor((p_rect.size.y-font->get_height())/2.0) +font->get_ascent();
	font->draw(ci,p_rect.pos,p_text,p_color,p_rect.size.x);
}
#endif
int Tree::draw_item(const Point2i& p_pos,const Point2& p_draw_ofs, const Size2& p_draw_size,TreeItem *p_item) {

	if (p_pos.y-cache.offset.y > (p_draw_size.height))
		return -1; //draw no more!

	RID ci = get_canvas_item();

	int htotal=0;

	int label_h=compute_item_height( p_item );

	/* Calculate height of the label part */
	label_h+=cache.vseparation;

	/* Draw label, if height fits */


		bool skip=(p_item==root && hide_root);


	if (!skip && (p_pos.y+label_h-cache.offset.y)>0) {

		if (!hide_folding && p_item->childs) { //has childs, draw the guide box

			Ref<Texture> arrow;

			if (p_item->collapsed) {

				arrow=cache.arrow_collapsed;
			} else {
				arrow=cache.arrow;

			}

			arrow->draw( ci , p_pos+p_draw_ofs+Point2i(0,(label_h-arrow->get_height())/2)-cache.offset);


		}

		//draw separation.
//		if (p_item->get_parent()!=root || !hide_root)

		Ref<Font> font = cache.font;

		int font_ascent=font->get_ascent();

		int ofs = p_pos.x + (hide_folding?cache.hseparation:cache.item_margin);
		for (int i=0;i<columns.size();i++) {

			int w = get_column_width(i);

			if (i==0) {

				w-=ofs;

				if (w<=0) {

					ofs=get_column_width(0);
					continue;
				}
			} else {

				ofs+=cache.hseparation;
				w-=cache.hseparation;
			}

			int bw=0;
			for(int j=p_item->cells[i].buttons.size()-1;j>=0;j--) {
				Ref<Texture> b=p_item->cells[i].buttons[j].texture;
				Size2 s = b->get_size() + cache.button_pressed->get_minimum_size();

				Point2i o = Point2i( ofs+w-s.width, p_pos.y )-cache.offset+p_draw_ofs;

				if (cache.click_type==Cache::CLICK_BUTTON && cache.click_item==p_item && cache.click_column==i && cache.click_index==j && !p_item->cells[i].buttons[j].disabled) {
					//being pressed
					cache.button_pressed->draw(get_canvas_item(),Rect2(o,s));
				}

				o.y+=(label_h-s.height)/2;
				o+=cache.button_pressed->get_offset();

				b->draw(ci,o,p_item->cells[i].buttons[j].disabled?Color(1,1,1,0.5):p_item->cells[i].buttons[j].color);
				w-=s.width+cache.button_margin;
				bw+=s.width+cache.button_margin;
			}

			Rect2i item_rect = Rect2i( Point2i( ofs, p_pos.y )-cache.offset+p_draw_ofs, Size2i( w, label_h ));
			Rect2i cell_rect=item_rect;
			if (i!=0) {
				cell_rect.pos.x-=cache.hseparation;
				cell_rect.size.x+=cache.hseparation;
			}



			VisualServer::get_singleton()->canvas_item_add_line(ci,Point2i(cell_rect.pos.x,cell_rect.pos.y+cell_rect.size.height),cell_rect.pos+cell_rect.size,cache.guide_color,1);

			if (i==0) {

				if (p_item->cells[0].selected && select_mode==SELECT_ROW) {
					Rect2i row_rect = Rect2i( Point2i( cache.bg->get_margin(MARGIN_LEFT), item_rect.pos.y), Size2i( get_size().width-cache.bg->get_minimum_size().width, item_rect.size.y ));
					//Rect2 r = Rect2i(row_rect.pos,row_rect.size);
					//r.grow(cache.selected->get_margin(MARGIN_LEFT));
					if (has_focus())
						cache.selected_focus->draw(ci,row_rect );
					else
						cache.selected->draw(ci,row_rect );
				}

			}

			if (p_item->cells[i].selected && select_mode!=SELECT_ROW) {

				Rect2i r(item_rect.pos,item_rect.size);
				if (p_item->cells[i].text.size() > 0){
					float icon_width = p_item->cells[i].get_icon_size().width;
					r.pos.x += icon_width;
					r.size.x -= icon_width;
				}
				//r.grow(cache.selected->get_margin(MARGIN_LEFT));
				if (has_focus()){
					cache.selected_focus->draw(ci,r );
					p_item->set_meta("__focus_rect", Rect2(r.pos,r.size));
				} else {
					cache.selected->draw(ci,r );
				}
				if (text_editor->is_visible()){
					text_editor->set_pos(get_global_pos() + r.pos);
				}
			}

			if (p_item->cells[i].custom_bg_color) {

				Rect2 r=cell_rect;
				r.pos.x-=cache.hseparation;
				r.size.x+=cache.hseparation;
				if (p_item->cells[i].custom_bg_outline) {
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y,r.size.x,1),p_item->cells[i].bg_color);
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y+r.size.y-1,r.size.x,1),p_item->cells[i].bg_color);
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y,1,r.size.y),p_item->cells[i].bg_color);
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x+r.size.x-1,r.pos.y,1,r.size.y),p_item->cells[i].bg_color);
				} else {
					VisualServer::get_singleton()->canvas_item_add_rect(ci,r,p_item->cells[i].bg_color);
				}
			}

			if (drop_mode_flags && drop_mode_over==p_item) {

				Rect2 r=cell_rect;

				if (drop_mode_section==-1 || drop_mode_section==0) {
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y,r.size.x,1),cache.drop_position_color);

				}

				if (drop_mode_section==0) {
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y,1,r.size.y),cache.drop_position_color);
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x+r.size.x-1,r.pos.y,1,r.size.y),cache.drop_position_color);

				}

				if (drop_mode_section==1 || drop_mode_section==0) {
					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2(r.pos.x,r.pos.y+r.size.y,r.size.x,1),cache.drop_position_color);
				}
			}

			Color col=p_item->cells[i].custom_color?p_item->cells[i].color:get_color( p_item->cells[i].selected?"font_color_selected":"font_color");

			Point2i text_pos=item_rect.pos;
			text_pos.y+=Math::floor((item_rect.size.y-font->get_height())/2) + font_ascent;

			switch (p_item->cells[i].mode) {

				case TreeItem::CELL_MODE_STRING: {

					draw_item_rect(p_item->cells[i],item_rect,col);
				} break;
				case TreeItem::CELL_MODE_CHECK: {

					Ref<Texture> checked = cache.checked;
					Ref<Texture> unchecked = cache.unchecked;
					Point2i check_ofs=item_rect.pos;
					check_ofs.y+=Math::floor((item_rect.size.y-checked->get_height())/2);

					if (p_item->cells[i].checked) {

						checked->draw( ci, check_ofs );
					} else {
						unchecked->draw( ci, check_ofs );

					}

					int check_w = checked->get_width()+cache.hseparation;

					text_pos.x+=check_w;

					item_rect.size.x-=check_w;
					item_rect.pos.x+=check_w;

					draw_item_rect(p_item->cells[i],item_rect,col);

					//font->draw( ci, text_pos, p_item->cells[i].text, col,item_rect.size.x-check_w );

				} break;
				case TreeItem::CELL_MODE_RANGE:
				case TreeItem::CELL_MODE_RANGE_EXPRESSION: {

					if (p_item->cells[i].text!="") {

						if (!p_item->cells[i].editable)
							break;

						int option = (int)p_item->cells[i].val;

						String s = p_item->cells[i].text;
						s=s.get_slicec(',',option);

						Ref<Texture> downarrow = cache.select_arrow;

						font->draw(ci, text_pos, s, col,item_rect.size.x-downarrow->get_width() );

						//?
						Point2i arrow_pos=item_rect.pos;
						arrow_pos.x+=item_rect.size.x-downarrow->get_width();
						arrow_pos.y+=Math::floor(((item_rect.size.y-downarrow->get_height()))/2.0);

						downarrow->draw( ci, arrow_pos );
					} else {

						Ref<Texture> updown = cache.updown;

						String valtext = String::num( p_item->cells[i].val, Math::step_decimals( p_item->cells[i].step ) );
						//String valtext = rtos( p_item->cells[i].val );
						font->draw( ci, text_pos, valtext, col, item_rect.size.x-updown->get_width());

						if (!p_item->cells[i].editable)
							break;

						Point2i updown_pos=item_rect.pos;
						updown_pos.x+=item_rect.size.x-updown->get_width();
						updown_pos.y+=Math::floor(((item_rect.size.y-updown->get_height()))/2.0);

						updown->draw( ci, updown_pos );
					}

				} break;
				case TreeItem::CELL_MODE_ICON: {

					if (p_item->cells[i].icon.is_null())
						break;
					Size2i icon_size = p_item->cells[i].get_icon_size();
					if (p_item->cells[i].icon_max_w>0 && icon_size.width >p_item->cells[i].icon_max_w) {
						icon_size.height = icon_size.height * p_item->cells[i].icon_max_w / icon_size.width;
						icon_size.width=p_item->cells[i].icon_max_w;
					}

					Point2i icon_ofs = (item_rect.size-icon_size)/2;
					icon_ofs+=item_rect.pos;


					draw_texture_rect(p_item->cells[i].icon,Rect2(icon_ofs,icon_size));;
					//p_item->cells[i].icon->draw(ci, icon_ofs);

				} break;
				case TreeItem::CELL_MODE_CUSTOM: {

	//				int option = (int)p_item->cells[i].val;



					if (p_item->cells[i].custom_draw_obj) {

						Object* cdo = ObjectDB::get_instance(p_item->cells[i].custom_draw_obj);
						if (cdo)
							cdo->call(p_item->cells[i].custom_draw_callback,p_item,Rect2(item_rect));
					}

					if (!p_item->cells[i].editable) {

						draw_item_rect(p_item->cells[i],item_rect,col);
						break;
					}

					Ref<Texture> downarrow = cache.select_arrow;

					Rect2i ir=item_rect;
					ir.size.width-=downarrow->get_width();
					draw_item_rect(p_item->cells[i],ir,col);

					Point2i arrow_pos=item_rect.pos;
					arrow_pos.x+=item_rect.size.x-downarrow->get_width();
					arrow_pos.y+=Math::floor(((item_rect.size.y-downarrow->get_height()))/2.0);

					downarrow->draw( ci, arrow_pos );

				} break;
			}

			if (i==0) {

				ofs=get_column_width(0);
			} else {

				ofs+=w+bw;
			}

			if (select_mode==SELECT_MULTI && selected_item==p_item && selected_col==i) {

				if (has_focus())
					cache.cursor->draw(ci,cell_rect);
				else
					cache.cursor_unfocus->draw(ci,cell_rect);
			}

		}

		//separator
		//get_painter()->draw_fill_rect( Point2i(0,pos.y),Size2i(get_size().width,1),color( COLOR_TREE_GRID) );

		//pos=p_pos; //reset pos

	}


	Point2 children_pos=p_pos;

	if (!skip) {
		children_pos.x+=cache.item_margin;
		htotal+=label_h;
		children_pos.y+=htotal;

	}


	if (!p_item->collapsed) { /* if not collapsed, check the childs */

		TreeItem *c=p_item->childs;

		while (c) {

			if (cache.draw_relationship_lines == 1){
				int root_ofs = children_pos.x + (hide_folding?cache.hseparation:cache.item_margin);
				int parent_ofs = p_pos.x + (hide_folding?cache.hseparation:cache.item_margin);
				Point2i root_pos = Point2i(root_ofs, children_pos.y + label_h/2)-cache.offset+p_draw_ofs;
				if (c->get_children() != NULL)
					root_pos -= Point2i(cache.arrow->get_width(),0);

				Point2i parent_pos = Point2i(parent_ofs - cache.arrow->get_width()/2, p_pos.y + label_h/2 + cache.arrow->get_height()/2)-cache.offset+p_draw_ofs;
				VisualServer::get_singleton()->canvas_item_add_line(ci, root_pos, Point2i(parent_pos.x, root_pos.y), cache.relationship_line_color);
				VisualServer::get_singleton()->canvas_item_add_line(ci, Point2i(parent_pos.x, root_pos.y), parent_pos, cache.relationship_line_color);
			}

			int child_h=draw_item(children_pos, p_draw_ofs, p_draw_size, c );

			if (child_h<0 && cache.draw_relationship_lines == 0)
				return -1; // break, stop drawing, no need to anymore

			htotal+=child_h;
			children_pos.y+=child_h;
			c=c->next;
		}
	}


	return htotal;


}

int Tree::_count_selected_items(TreeItem* p_from) const {

	int count=0;
	for(int i=0;i<columns.size();i++) {
		if (p_from->is_selected(i))
			count++;
	}

	if (p_from->get_children()) {
		count+=_count_selected_items(p_from->get_children());
	}

	if (p_from->get_next()) {
		count+=_count_selected_items(p_from->get_next());
	}

	return count;

}
void Tree::select_single_item(TreeItem *p_selected, TreeItem *p_current, int p_col, TreeItem *p_prev, bool *r_in_range, bool p_force_deselect) {

	TreeItem::Cell &selected_cell=p_selected->cells[p_col];

	bool switched=false;
	if (r_in_range && !*r_in_range && (p_current==p_selected || p_current==p_prev)) {
		*r_in_range=true;
		switched=true;
	}

	bool emitted_row=false;

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

		TreeItem::Cell &c=p_current->cells[i];

		if (!c.selectable)
			continue;

		if (select_mode==SELECT_ROW) {

			if (p_selected==p_current && !c.selected) {
					c.selected=true;
					selected_item=p_selected;
					selected_col=0;
					selected_item=p_selected;
					if (!emitted_row) {
						emit_signal("item_selected");
						emitted_row=true;
					}
					//if (p_col==i)
					 //	p_current->selected_signal.call(p_col);

			} else if (c.selected) {

					c.selected=false;
					//p_current->deselected_signal.call(p_col);
			}
		} else if (select_mode==SELECT_SINGLE || select_mode==SELECT_MULTI) {

			if (!r_in_range && &selected_cell==&c) {

				if (!selected_cell.selected) {

					selected_cell.selected=true;

					selected_item=p_selected;
					selected_col=i;

					emit_signal("cell_selected");
					if (select_mode==SELECT_MULTI)
						emit_signal("multi_selected",p_current,i,true);
					else if(select_mode == SELECT_SINGLE)
						emit_signal("item_selected");

				} else if (select_mode==SELECT_MULTI && (selected_item!=p_selected || selected_col!=i)) {

					selected_item=p_selected;
					selected_col=i;
					emit_signal("cell_selected");

				}
			} else {


				if (r_in_range && *r_in_range && !p_force_deselect) {


					if (!c.selected && c.selectable) {
						c.selected=true;
						emit_signal("multi_selected",p_current,i,true);
					}

				} else if (!r_in_range || p_force_deselect){
					if (select_mode==SELECT_MULTI && c.selected)
						emit_signal("multi_selected",p_current,i,false);
					c.selected=false;
				}
				//p_current->deselected_signal.call(p_col);
			}
		}

	}

	if (!switched && r_in_range && *r_in_range && (p_current==p_selected || p_current==p_prev)) {
		*r_in_range=false;
	}

	TreeItem *c=p_current->childs;

	while (c) {

		select_single_item(p_selected,c,p_col,p_prev,r_in_range,p_current->is_collapsed() || p_force_deselect);
		c=c->next;
	}

}


Rect2 Tree::search_item_rect(TreeItem *p_from, TreeItem *p_item) {


	return Rect2();
}


void Tree::_range_click_timeout() {

	if (range_item_last && !range_drag_enabled && Input::get_singleton()->is_mouse_button_pressed(BUTTON_LEFT)) {

		Point2 pos = get_local_mouse_pos()-cache.bg->get_offset();
		if (show_column_titles) {
			pos.y-=_get_title_button_height();

			if (pos.y<0) {
				range_click_timer->stop();
				return;
			}
		}

		click_handled=false;
		InputModifierState mod = InputModifierState(); // should be irrelevant..

		blocked++;
		propagate_mouse_event(pos+cache.offset, 0, 0, false, root, BUTTON_LEFT, mod);
		blocked--;

		if (range_click_timer->is_one_shot()) {
			range_click_timer->set_wait_time(0.05);
			range_click_timer->set_one_shot(false);
			range_click_timer->start();
		}

		if (!click_handled)
			range_click_timer->stop();

	} else {
		range_click_timer->stop();
	}
}


int Tree::propagate_mouse_event(const Point2i &p_pos,int x_ofs,int y_ofs,bool p_doubleclick,TreeItem *p_item,int p_button,const InputModifierState& p_mod) {

	int item_h=compute_item_height( p_item )+cache.vseparation;

	bool skip=(p_item==root && hide_root);

	if (!skip && p_pos.y<item_h) {
		// check event!

		if (range_click_timer->get_time_left() > 0 && p_item != range_item_last) {
			return -1;
		}

		if (!hide_folding && (p_pos.x >=x_ofs && p_pos.x < (x_ofs+cache.item_margin) )) {


			if (p_item->childs)
				p_item->set_collapsed( ! p_item->is_collapsed() );

			return -1; //handled!
		}

		int x=p_pos.x;
		/* find clicked column */
		int col=-1;
		int col_ofs=0;
		int col_width=0;
		for (int i=0;i<columns.size();i++) {

			col_width=get_column_width(i);
			if (x>col_width) {
				col_ofs+=col_width;
				x-=col_width;
				continue;
			}

			col=i;
			break;
		}



		if (col==-1)
			return -1;
		else if (col==0) {
			int margin=x_ofs+cache.item_margin;//-cache.hseparation;
			//int lm = cache.bg->get_margin(MARGIN_LEFT);
			col_width-=margin;
			col_ofs+=margin;
			x-=margin;
		} else {

			col_width-=cache.hseparation;
			x-=cache.hseparation;

		}

		TreeItem::Cell &c = p_item->cells[col];


		bool already_selected=c.selected;
		bool already_cursor=(p_item==selected_item) && col == selected_col;


		for(int j=c.buttons.size()-1;j>=0;j--) {
			Ref<Texture> b=c.buttons[j].texture;
			int w = b->get_size().width + cache.button_pressed->get_minimum_size().width;

			if (x>col_width-w) {
				if (c.buttons[j].disabled) {
					pressed_button=-1;
					cache.click_type=Cache::CLICK_NONE;
					return -1;
				}
				pressed_button=j;
				cache.click_type=Cache::CLICK_BUTTON;
				cache.click_index=j;
				cache.click_id=c.buttons[j].id;
				cache.click_item=p_item;
				cache.click_column=col;
				cache.click_pos=get_global_mouse_pos()-get_global_pos();
				update();
				//emit_signal("button_pressed");
				return -1;
			}
			col_width-=w+cache.button_margin;
		}

		if (p_button==BUTTON_LEFT || (p_button==BUTTON_RIGHT && allow_rmb_select)) {
			/* process selection */

			if (p_doubleclick && (!c.editable || c.mode==TreeItem::CELL_MODE_CUSTOM || c.mode==TreeItem::CELL_MODE_ICON /*|| c.mode==TreeItem::CELL_MODE_CHECK*/)) { //it' s confusing for check

				emit_signal("item_activated");
				return -1;
			}

			if (select_mode==SELECT_MULTI && p_mod.command && c.selectable) {

				if (!c.selected || p_button==BUTTON_RIGHT) {

					p_item->select(col);
					emit_signal("multi_selected",p_item,col,true);
					if (p_button==BUTTON_RIGHT) {
						emit_signal("item_rmb_selected",get_local_mouse_pos());
					}


					//p_item->selected_signal.call(col);
				} else {

					p_item->deselect(col);
					emit_signal("multi_selected",p_item,col,false);
					//p_item->deselected_signal.call(col);
				}

			} else {

				if (c.selectable) {

					if (select_mode==SELECT_MULTI && p_mod.shift && selected_item && selected_item!=p_item) {

						bool inrange=false;

						select_single_item( p_item, root, col,selected_item,&inrange );
						if (p_button==BUTTON_RIGHT) {
							emit_signal("item_rmb_selected",get_local_mouse_pos());
						}
					} else {

						int icount = _count_selected_items(root);

						if (select_mode==SELECT_MULTI && icount>1 && p_button!=BUTTON_RIGHT) {
							single_select_defer=p_item;
							single_select_defer_column=col;
						} else {

							if (p_button!=BUTTON_RIGHT || !c.selected) {
								select_single_item( p_item, root, col );
							}

							if (p_button==BUTTON_RIGHT) {
								emit_signal("item_rmb_selected",get_local_mouse_pos());
							}
						}
					}

					//if (!c.selected && select_mode==SELECT_MULTI) {
					//	emit_signal("multi_selected",p_item,col,true);
					//}
					update();
				}


			}
		}



		if (!c.editable)
			return -1; // if cell is not editable, don't bother

		/* editing */

		bool bring_up_editor=force_select_on_already_selected ? (c.selected && already_selected) : c.selected;
		String editor_text=c.text;

		switch (c.mode) {

			case TreeItem::CELL_MODE_STRING: {
				//nothing in particular

				if (select_mode==SELECT_MULTI && (get_tree()->get_last_event_id() == focus_in_id || !already_cursor)) {
					bring_up_editor=false;
				}

			} break;
			case TreeItem::CELL_MODE_CHECK: {

				Ref<Texture> checked = cache.checked;
				bring_up_editor=false; //checkboxes are not edited with editor
				if (x>=0 && x<= checked->get_width()+cache.hseparation ) {


					p_item->set_checked(col,!c.checked);
					item_edited(col,p_item);
					click_handled=true;
					//p_item->edited_signal.call(col);
				}

			} break;
			case TreeItem::CELL_MODE_RANGE:
			case TreeItem::CELL_MODE_RANGE_EXPRESSION: {


				if (c.text!="") {
					//if (x >= (get_column_width(col)-item_h/2)) {

					popup_menu->clear();
					for (int i=0;i<c.text.get_slice_count(",");i++) {

						String s = c.text.get_slicec(',',i);
						popup_menu->add_item(s,i);

					}

					popup_menu->set_size(Size2(col_width,0));
					popup_menu->set_pos( get_global_pos() + Point2i(col_ofs,_get_title_button_height()+y_ofs+item_h)-cache.offset );
					popup_menu->popup();
					popup_edited_item=p_item;
					popup_edited_item_col=col;
					//}
					bring_up_editor=false;
				} else {

					if (x >= (col_width-item_h/2)) {

						/* touching the combo */
						bool up=p_pos.y < (item_h /2);

						if (p_button==BUTTON_LEFT) {

							if (range_click_timer->get_time_left() == 0) {

								range_item_last=p_item;
								range_up_last=up;

								range_click_timer->set_wait_time(0.6);
								range_click_timer->set_one_shot(true);
								range_click_timer->start();

							} else if (up != range_up_last) {

								return -1; // break. avoid changing direction on mouse held
							}

							p_item->set_range( col, c.val + (up?1.0:-1.0) * c.step );

							item_edited(col,p_item);

						} else if (p_button==BUTTON_RIGHT) {

							p_item->set_range( col, (up?c.max:c.min) );
							item_edited(col,p_item);
						} else if (p_button==BUTTON_WHEEL_UP) {

							p_item->set_range( col, c.val + c.step );
							item_edited(col,p_item);
						} else if (p_button==BUTTON_WHEEL_DOWN) {

							p_item->set_range( col, c.val - c.step );
							item_edited(col,p_item);
						}

						//p_item->edited_signal.call(col);
						bring_up_editor=false;


					}  else {

						editor_text=String::num( p_item->cells[col].val, Math::step_decimals( p_item->cells[col].step ) );
						if (select_mode==SELECT_MULTI && get_tree()->get_last_event_id() == focus_in_id)
							bring_up_editor=false;

					}

				}
				click_handled=true;

			} break;
			case TreeItem::CELL_MODE_ICON: {
				bring_up_editor=false;
			} break;
			case TreeItem::CELL_MODE_CUSTOM: {
				edited_item=p_item;
				edited_col=col;
				custom_popup_rect=Rect2i(get_global_pos() + Point2i(col_ofs,_get_title_button_height()+y_ofs+item_h-cache.offset.y), Size2(get_column_width(col),item_h));
				emit_signal("custom_popup_edited",((bool)(x >= (col_width-item_h/2))));

				bring_up_editor=false;
				item_edited(col,p_item);
				click_handled=true;
				return -1;
			} break;

		};

		if (!bring_up_editor || p_button!=BUTTON_LEFT)
			return -1;



		click_handled=true;
		popup_edited_item=p_item;
		popup_edited_item_col=col;

		pressing_item_rect=Rect2(get_global_pos() + Point2i(col_ofs,_get_title_button_height()+y_ofs)-cache.offset,Size2(col_width,item_h));
		pressing_for_editor_text=editor_text;
		pressing_for_editor=true;

		return -1; //select
	} else {

		Point2i new_pos=p_pos;

		if (!skip) {
			x_ofs+=cache.item_margin;
			//new_pos.x-=cache.item_margin;
			y_ofs+=item_h;
			new_pos.y-=item_h;
		}


		if (!p_item->collapsed) { /* if not collapsed, check the childs */

			TreeItem *c=p_item->childs;

			while (c) {

				int child_h=propagate_mouse_event( new_pos,x_ofs,y_ofs,p_doubleclick,c,p_button,p_mod);

				if (child_h<0)
					return -1; // break, stop propagating, no need to anymore

				new_pos.y-=child_h;
				y_ofs+=child_h;
				c=c->next;
				item_h+=child_h;
			}
		}



	}

	return item_h; // nothing found

}


void Tree::_text_editor_modal_close() {

	if ( Input::get_singleton()->is_key_pressed(KEY_ESCAPE) ||
	     Input::get_singleton()->is_key_pressed(KEY_ENTER) ||
	     Input::get_singleton()->is_key_pressed(KEY_RETURN) ) {

		return;
	}

	if (value_editor->has_point(value_editor->get_local_mouse_pos()))
		return;

	text_editor_enter(text_editor->get_text());
}


void Tree::text_editor_enter(String p_text) {


	text_editor->hide();
	value_editor->hide();

	if (!popup_edited_item)
		return;

	if (popup_edited_item_col<0 || popup_edited_item_col>columns.size())
		return;

	TreeItem::Cell &c=popup_edited_item->cells[popup_edited_item_col];
	switch( c.mode ) {

		case TreeItem::CELL_MODE_STRING: {

			c.text=p_text;
			//popup_edited_item->edited_signal.call( popup_edited_item_col );
		} break;
		case TreeItem::CELL_MODE_RANGE: {

			c.val=p_text.to_double();
			if (c.step>0)
				c.val=Math::stepify(c.val,c.step);
			if (c.val<c.min)
				c.val=c.min;
			else if (c.val>c.max)
				c.val=c.max;

			//popup_edited_item->edited_signal.call( popup_edited_item_col );
		} break;
		case TreeItem::CELL_MODE_RANGE_EXPRESSION: {

			if(evaluator)
				c.val=evaluator->eval(p_text);
			else
				c.val=p_text.to_double();
		} break;
	default: { ERR_FAIL(); }
	}

	item_edited(popup_edited_item_col,popup_edited_item);
	update();

}

void Tree::value_editor_changed(double p_value) {

	if (updating_value_editor) {
		return;
	}
	if (!popup_edited_item) {
		return;
	}

	TreeItem::Cell &c=popup_edited_item->cells[popup_edited_item_col];
	c.val=p_value;
	item_edited(popup_edited_item_col,popup_edited_item);
	update();
}

void Tree::popup_select(int p_option) {

	if (!popup_edited_item)
		return;

	if (popup_edited_item_col<0 || popup_edited_item_col>columns.size())
		return;


	popup_edited_item->cells[popup_edited_item_col].val=p_option;
	//popup_edited_item->edited_signal.call( popup_edited_item_col );
	update();
	item_edited(popup_edited_item_col,popup_edited_item);
}



void Tree::_input_event(InputEvent p_event) {

	switch (p_event.type) {

		case InputEvent::KEY: {

			if (!p_event.key.pressed)
				break;
			if (p_event.key.mod.alt || p_event.key.mod.command || (p_event.key.mod.shift && p_event.key.unicode==0) || p_event.key.mod.meta)
				break;
			if (!root)
				return;

			if (hide_root && !root->get_next_visible())
				return;

			switch(p_event.key.scancode) {
#define EXIT_BREAK { if (!cursor_can_exit_tree) accept_event(); break; }
				case KEY_RIGHT: {

					//TreeItem *next = NULL;
					if (!selected_item)
						break;
					if (select_mode==SELECT_ROW)
						EXIT_BREAK;
					if (selected_col>=(columns.size()-1))
						EXIT_BREAK;
					if (select_mode==SELECT_MULTI) {
						selected_col++;
						emit_signal("cell_selected");
					} else {

						selected_item->select(selected_col+1);
					}

					update();
					ensure_cursor_is_visible();
					accept_event();

				} break;
				case KEY_LEFT: {

//					TreeItem *next = NULL;
					if (!selected_item)
						break;
					if (select_mode==SELECT_ROW)
						EXIT_BREAK;
					if (selected_col<=0)
						EXIT_BREAK;
					if (select_mode==SELECT_MULTI) {
						selected_col--;
						emit_signal("cell_selected");
					} else {

						selected_item->select(selected_col-1);
					}

					update();
					accept_event();

				} break;
				case KEY_DOWN: {

					TreeItem *next = NULL;
					if (!selected_item) {

						next=hide_root?root->get_next_visible():root;
						selected_item=0;
					} else {

						next=selected_item->get_next_visible();

//						if (diff < uint64_t(GLOBAL_DEF("gui/incr_search_max_interval_msec",2000))) {
						if (last_keypress!=0) {
							//incr search next
							int col;
							next=_search_item_text(next,incr_search,&col,true);
							if (!next) {
								accept_event();
								return;
							}

						}
					}

					if (select_mode==SELECT_MULTI) {

						if (!next)
							EXIT_BREAK;

						selected_item=next;
						emit_signal("cell_selected");
						update();
					} else {

						int col=selected_col<0?0:selected_col;

						while (next && !next->cells[col].selectable)
							next=next->get_next_visible();
						if (!next)
							EXIT_BREAK; // do nothing..
						next->select(col);

					}

					ensure_cursor_is_visible();
					accept_event();

				} break;
				case KEY_UP: {

						TreeItem *prev = NULL;
						if (!selected_item) {
							prev = get_last_item();
							selected_col=0;
						} else {

							prev=selected_item->get_prev_visible();
							if (last_keypress!=0) {
								//incr search next
								int col;
								prev=_search_item_text(prev,incr_search,&col,true,true);
								if (!prev) {
									accept_event();
									return;
								}

							}

						}

						if (select_mode==SELECT_MULTI) {


							if (!prev)
								break;
							selected_item=prev;
							emit_signal("cell_selected");
							update();
						} else {

							int col=selected_col<0?0:selected_col;
							while (prev && !prev->cells[col].selectable)
								prev=prev->get_prev_visible();
							if (!prev)
								break; // do nothing..
							prev->select(col);

						}

						ensure_cursor_is_visible();
						accept_event();

				} break;
				case KEY_PAGEDOWN: {

					TreeItem *next = NULL;
					if (!selected_item)
						break;
					next=selected_item;

					for(int i=0;i<10;i++) {

						TreeItem *_n = next->get_next_visible();
						if (_n) {
							next=_n;
						} else {

							break;
						}
					}
					if (next==selected_item)
						break;

					if (select_mode==SELECT_MULTI) {


						selected_item=next;
						emit_signal("cell_selected");
						update();
					} else {

						while (next && !next->cells[selected_col].selectable)
							next=next->get_next_visible();
						if (!next)
							EXIT_BREAK; // do nothing..
						next->select(selected_col);

					}

					ensure_cursor_is_visible();
				   } break;
				case KEY_PAGEUP: {

					TreeItem *prev = NULL;
					if (!selected_item)
						break;
					prev=selected_item;

					for(int i=0;i<10;i++) {

						TreeItem *_n = prev->get_prev_visible();
						if (_n) {
							prev=_n;
						} else {

							break;
						}
					}
					if (prev==selected_item)
						break;

					if (select_mode==SELECT_MULTI) {


						selected_item=prev;
						emit_signal("cell_selected");
						update();
					} else {

						while (prev && !prev->cells[selected_col].selectable)
							prev=prev->get_prev_visible();
						if (!prev)
							EXIT_BREAK; // do nothing..
						prev->select(selected_col);

					}

					ensure_cursor_is_visible();

				} break;
				case KEY_F2:
				case KEY_RETURN:
				case KEY_ENTER: {

					if (selected_item) {
						//bring up editor if possible
						if (!edit_selected()) {
							emit_signal("item_activated");
						}

					}
					accept_event();

				} break;
				case KEY_SPACE: {
					if (select_mode==SELECT_MULTI) {
						if (!selected_item)
							break;
						if (selected_item->is_selected(selected_col)) {
							selected_item->deselect(selected_col);
							emit_signal("multi_selected",selected_item,selected_col,false);
						} else if (selected_item->is_selectable(selected_col)) {
							selected_item->select(selected_col);
							emit_signal("multi_selected",selected_item,selected_col,true);
						}
					}
					accept_event();

				} break;
				default: {

					if (p_event.key.unicode>0) {

						_do_incr_search(String::chr(p_event.key.unicode));
						accept_event();

						return;
					} else {
						if (p_event.key.scancode!=KEY_SHIFT)
							last_keypress=0;
					}
				} break;

				last_keypress=0;
			}

		} break;

		case InputEvent::MOUSE_MOTION: {

			if (cache.font.is_null()) // avoid a strange case that may fuckup stuff
				update_cache();
			const InputEventMouseMotion& b=p_event.mouse_motion;

			Ref<StyleBox> bg = cache.bg;

			Point2 pos = Point2(b.x,b.y) - bg->get_offset();

			Cache::ClickType old_hover = cache.hover_type;
			int old_index = cache.hover_index;

			cache.hover_type=Cache::CLICK_NONE;
			cache.hover_index=0;
			if (show_column_titles) {
				pos.y-=_get_title_button_height();
				if (pos.y<0) {
					pos.x+=cache.offset.x;
					int len=0;
					for(int i=0;i<columns.size();i++) {

						len+=get_column_width(i);
						if (pos.x<len) {

							cache.hover_type=Cache::CLICK_TITLE;
							cache.hover_index=i;
							update();
							break;
						}
					}

				}

			}

			if (drop_mode_flags && root) {

				Point2 mpos=Point2(b.x,b.y);
				mpos -= cache.bg->get_offset();
				mpos.y-=_get_title_button_height();
				if (mpos.y>=0) {

					if (h_scroll->is_visible())
						mpos.x+=h_scroll->get_val();
					if (v_scroll->is_visible())
						mpos.y+=v_scroll->get_val();

					int col,h,section;
					TreeItem *it = _find_item_at_pos(root,mpos,col,h,section);

					if (it!=drop_mode_over || section!=drop_mode_section) {
						drop_mode_over=it;
						drop_mode_section=section;
						update();
					}
				}
			}



			if (cache.hover_type!=old_hover || cache.hover_index!=old_index) {
				update();
			}

			if (pressing_for_editor && popup_edited_item &&	(popup_edited_item->get_cell_mode(popup_edited_item_col)==TreeItem::CELL_MODE_RANGE || popup_edited_item->get_cell_mode(popup_edited_item_col)==TreeItem::CELL_MODE_RANGE_EXPRESSION)) {
				//range drag

				if (!range_drag_enabled) {

					Vector2 cpos = Vector2(b.x,b.y);
					if (cpos.distance_to(pressing_pos)>2) {
						range_drag_enabled=true;
						range_drag_capture_pos=cpos;
						range_drag_base=popup_edited_item->get_range(popup_edited_item_col);
						Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_CAPTURED);
					}
				} else {

					TreeItem::Cell &c=popup_edited_item->cells[popup_edited_item_col];
					float diff_y = -b.relative_y;
					diff_y=Math::pow(ABS(diff_y),1.8)*SGN(diff_y);
					diff_y*=0.1;
					range_drag_base=CLAMP(range_drag_base + c.step * diff_y, c.min, c.max);
					popup_edited_item->set_range(popup_edited_item_col,range_drag_base);
					item_edited(popup_edited_item_col,popup_edited_item);

				}

			}

			if (drag_touching && ! drag_touching_deaccel) {


				drag_accum-=b.relative_y;
				v_scroll->set_val(drag_from+drag_accum);
				drag_speed=-b.speed_y;

			}
		} break;
		case InputEvent::MOUSE_BUTTON: {



			if (cache.font.is_null()) // avoid a strange case that may fuckup stuff
				update_cache();
			const InputEventMouseButton& b=p_event.mouse_button;


			if (!b.pressed) {

				if (b.button_index==BUTTON_LEFT) {


					if (single_select_defer) {
						select_single_item( single_select_defer, root, single_select_defer_column );
						single_select_defer=NULL;
					}

					range_click_timer->stop();

					if (pressing_for_editor) {

						if (range_drag_enabled) {

							range_drag_enabled=false;
							Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_VISIBLE);
							warp_mouse(range_drag_capture_pos);
						} else
							edit_selected();

						pressing_for_editor=false;

					}



					if (cache.click_type==Cache::CLICK_BUTTON) {
						// make sure in case of wrong reference after reconstructing whole TreeItems
						cache.click_item=get_item_at_pos(cache.click_pos);
						emit_signal("button_pressed",cache.click_item,cache.click_column,cache.click_id);

					}
					cache.click_type=Cache::CLICK_NONE;
					cache.click_index=-1;
					cache.click_id=-1;
					cache.click_item=NULL;
					cache.click_column=0;

					if (drag_touching) {


						if (drag_speed==0) {
							drag_touching_deaccel=false;
							drag_touching=false;
							set_fixed_process(false);
						} else {

							drag_touching_deaccel=true;
						}

					}
					update();
				}
				break;

			}

			if (range_drag_enabled)
				break;

			switch(b.button_index) {
				case BUTTON_RIGHT:
				case BUTTON_LEFT: {
					Ref<StyleBox> bg = cache.bg;

					Point2 pos = Point2(b.x,b.y) - bg->get_offset();
					cache.click_type=Cache::CLICK_NONE;
					if (show_column_titles && b.button_index==BUTTON_LEFT) {
						pos.y-=_get_title_button_height();

						if (pos.y<0) {
							pos.x+=cache.offset.x;
							int len=0;
							for(int i=0;i<columns.size();i++) {

								len+=get_column_width(i);
								if (pos.x<len) {

									cache.click_type=Cache::CLICK_TITLE;
									cache.click_index=i;
									//cache.click_id=;
									update();
									break;
								}
							}
							break;
						}

					}
					if (!root || (!root->get_children() && hide_root)) {
						if (b.button_index==BUTTON_RIGHT && allow_rmb_select) {
							emit_signal("empty_tree_rmb_selected",get_local_mouse_pos());
						}
						break;
					}

					click_handled=false;
					pressing_for_editor=false;

					blocked++;
					bool handled = propagate_mouse_event(pos+cache.offset,0,0,b.doubleclick,root,b.button_index,b.mod);
					blocked--;

					if (pressing_for_editor) {
						pressing_pos=Point2(b.x,b.y);
					}


					if (b.button_index==BUTTON_RIGHT)
						break;

					if (drag_touching) {
						set_fixed_process(false);
						drag_touching_deaccel=false;
						drag_touching=false;
						drag_speed=0;
						drag_from=0;
					}

					if (!click_handled) {
						drag_speed=0;
						drag_accum=0;
//						last_drag_accum=0;
						drag_from=v_scroll->get_val();
						drag_touching=OS::get_singleton()->has_touchscreen_ui_hint();
						drag_touching_deaccel=false;
						if (drag_touching) {
							set_fixed_process(true);
						}
					}


				} break;
				case BUTTON_WHEEL_UP: {

					v_scroll->set_val( v_scroll->get_val()-v_scroll->get_page()/8 );
				} break;
				case BUTTON_WHEEL_DOWN: {

					v_scroll->set_val( v_scroll->get_val()+v_scroll->get_page()/8 );
				} break;
			}

		} break;
	}

}


bool Tree::edit_selected() {

	TreeItem *s = get_selected();
	ERR_EXPLAIN("No item selected!");
	ERR_FAIL_COND_V(!s,false);
	ensure_cursor_is_visible();
	int col = get_selected_column();
	ERR_EXPLAIN("No item column selected!");
	ERR_FAIL_INDEX_V(col,columns.size(),false);

	if (!s->cells[col].editable)
		return false;

	Rect2 rect = s->get_meta("__focus_rect");

	popup_edited_item=s;
	popup_edited_item_col=col;

	TreeItem::Cell &c = s->cells[col];

	if (c.mode==TreeItem::CELL_MODE_CHECK) {

		s->set_checked(col, !c.checked);
		item_edited(col,s);
		return true;
	} else if (c.mode==TreeItem::CELL_MODE_CUSTOM) {

		edited_item=s;
		edited_col=col;
		custom_popup_rect=Rect2i( get_global_pos() + rect.pos, rect.size );
		emit_signal("custom_popup_edited",false);
		item_edited(col,s);

		return true;
	} else if ((c.mode==TreeItem::CELL_MODE_RANGE||c.mode==TreeItem::CELL_MODE_RANGE_EXPRESSION) && c.text!="") {

		popup_menu->clear();
		for (int i=0;i<c.text.get_slice_count(",");i++) {

			String s = c.text.get_slicec(',',i);
			popup_menu->add_item(s,i);

		}

		popup_menu->set_size(Size2(rect.size.width,0));
		popup_menu->set_pos( get_global_pos() + rect.pos + Point2i(0,rect.size.height) );
		popup_menu->popup();
		popup_edited_item=s;
		popup_edited_item_col=col;
		return true;

	} else if (c.mode==TreeItem::CELL_MODE_STRING || c.mode==TreeItem::CELL_MODE_RANGE || c.mode==TreeItem::CELL_MODE_RANGE_EXPRESSION ) {

		Point2i textedpos=get_global_pos() + rect.pos;
		text_editor->set_pos( textedpos );
		text_editor->set_size( rect.size);
		text_editor->clear();
		text_editor->set_text( c.mode==TreeItem::CELL_MODE_STRING?c.text:String::num( c.val, Math::step_decimals( c.step ) ) );
		text_editor->select_all();

		if (c.mode==TreeItem::CELL_MODE_RANGE || c.mode==TreeItem::CELL_MODE_RANGE_EXPRESSION ) {

			value_editor->set_pos(textedpos + Point2i(0,text_editor->get_size().height) );
			value_editor->set_size( Size2(rect.size.width,1));
			value_editor->show_modal();
			updating_value_editor=true;
			value_editor->set_min( c.min );
			value_editor->set_max( c.max );
			value_editor->set_step( c.step );
			value_editor->set_val( c.val );
			value_editor->set_exp_unit_value( c.expr );
			updating_value_editor=false;
		}

		text_editor->show_modal();
		text_editor->grab_focus();
		return true;
	}

	return false;
}

Size2 Tree::get_internal_min_size() const {

	Size2i size=cache.bg->get_offset();
	if (root)
		size.height+=get_item_height(root);
	for (int i=0;i<columns.size();i++) {

		size.width+=columns[i].min_width;
	}

	return size;
}

void Tree::update_scrollbars() {

	Size2 size = get_size();
	int tbh;
	if (show_column_titles) {
		tbh=_get_title_button_height();
	} else {

		tbh=0;
	}

	Size2 hmin = h_scroll->get_combined_minimum_size();
	Size2 vmin = v_scroll->get_combined_minimum_size();



	v_scroll->set_begin( Point2(size.width - vmin.width , cache.bg->get_margin(MARGIN_TOP)) );
	v_scroll->set_end( Point2(size.width, size.height-cache.bg->get_margin(MARGIN_TOP)-cache.bg->get_margin(MARGIN_BOTTOM)) );

	h_scroll->set_begin( Point2( 0, size.height - hmin.height) );
	h_scroll->set_end( Point2(size.width-vmin.width, size.height) );


	Size2 min = get_internal_min_size();

	if (min.height < size.height - hmin.height) {

		v_scroll->hide();
		cache.offset.y=0;
	} else {

		v_scroll->show();
		v_scroll->set_max(min.height);
		v_scroll->set_page(size.height - hmin.height - tbh);
		cache.offset.y=v_scroll->get_val();
	}

	if (min.width < size.width - vmin.width) {

		h_scroll->hide();
		cache.offset.x=0;
	} else {

		h_scroll->show();
		h_scroll->set_max(min.width);
		h_scroll->set_page(size.width - vmin.width);
		cache.offset.x=h_scroll->get_val();
	}
}


int Tree::_get_title_button_height() const {

	return show_column_titles?cache.font->get_height() + cache.title_button->get_minimum_size().height:0;
}

void Tree::_notification(int p_what) {

	if (p_what==NOTIFICATION_FOCUS_ENTER) {

		focus_in_id=get_tree()->get_last_event_id();
	}
	if (p_what==NOTIFICATION_MOUSE_EXIT) {

		if (cache.hover_type!=Cache::CLICK_NONE) {
			cache.hover_type=Cache::CLICK_NONE;
			update();
		}
	}

	if (p_what==NOTIFICATION_VISIBILITY_CHANGED) {

		drag_touching=false;
	}

	if (p_what==NOTIFICATION_ENTER_TREE) {

		update_cache();;
	}
	if (p_what==NOTIFICATION_DRAG_END) {

		drop_mode_flags=0;
		scrolling = false;
		set_fixed_process(false);
		update();
	}
	if (p_what==NOTIFICATION_DRAG_BEGIN) {

		single_select_defer=NULL;
		if (cache.scroll_speed > 0 && get_rect().has_point(get_viewport()->get_mouse_pos() - get_global_pos())) {
			scrolling = true;
			set_fixed_process(true);
		}
	}
	if (p_what==NOTIFICATION_FIXED_PROCESS) {

		if (drag_touching)  {

			if (drag_touching_deaccel) {

				float pos = v_scroll->get_val();
				pos+=drag_speed*get_fixed_process_delta_time();

				bool turnoff=false;
				if (pos<0) {
					pos=0;
					turnoff=true;
					set_fixed_process(false);
					drag_touching=false;
					drag_touching_deaccel=false;
				}
				if (pos > (v_scroll->get_max()-v_scroll->get_page())) {
					pos=v_scroll->get_max()-v_scroll->get_page();
					turnoff=true;

				}

				v_scroll->set_val(pos);
				float sgn = drag_speed<0? -1 : 1;
				float val = Math::abs(drag_speed);
				val-=1000*get_fixed_process_delta_time();

				if (val<0) {
					turnoff=true;
				}
				drag_speed=sgn*val;

				if (turnoff) {
					set_fixed_process(false);
					drag_touching=false;
					drag_touching_deaccel=false;
				}


			} else {

			}
		}
		
		if (scrolling) {
			Point2 point = get_viewport()->get_mouse_pos() - get_global_pos();
			if (point.x < cache.scroll_border) {
				point.x -= cache.scroll_border;
			} else if (point.x > get_size().width - cache.scroll_border) {
				point.x -= get_size().width - cache.scroll_border;
			} else {
				point.x = 0;
			}
			if (point.y < cache.scroll_border) {
				point.y -= cache.scroll_border;
			} else if (point.y > get_size().height - cache.scroll_border) {
				point.y -= get_size().height - cache.scroll_border;
			} else {
				point.y = 0;
			}
			point *= cache.scroll_speed * get_fixed_process_delta_time();
			point += get_scroll();
			h_scroll->set_val(point.x);
			v_scroll->set_val(point.y);
		}
	}

	if (p_what==NOTIFICATION_DRAW) {

		update_cache();
		update_scrollbars();
		RID ci = get_canvas_item();

		VisualServer::get_singleton()->canvas_item_set_clip(ci,true);

		Ref<StyleBox> bg = cache.bg;
		Ref<StyleBox> bg_focus = get_stylebox("bg_focus");

		Point2 draw_ofs;
		draw_ofs+=bg->get_offset();
		Size2 draw_size=get_size()-bg->get_minimum_size();

		bg->draw( ci, Rect2( Point2(), get_size()) );
		if (has_focus()) {
			VisualServer::get_singleton()->canvas_item_add_clip_ignore(ci,true);
			bg_focus->draw( ci, Rect2( Point2(), get_size()) );
			VisualServer::get_singleton()->canvas_item_add_clip_ignore(ci,false);
		}

		int tbh = _get_title_button_height();

		draw_ofs.y+=tbh;
		draw_size.y-=tbh;

		if (root) {


			draw_item( Point2(),draw_ofs,draw_size,root);

		}

		int ofs=0;
//		int from_y=exposed.pos.y+bg->get_margin(MARGIN_TOP);
//		int size_y=exposed.size.height-bg->get_minimum_size().height;

		for (int i=0;i<(columns.size()-1-1);i++) {

			ofs+=get_column_width(i);
			//get_painter()->draw_fill_rect( Point2(ofs+cache.hseparation/2, from_y), Size2( 1, size_y ),color( COLOR_TREE_GRID) );
		}

		if (show_column_titles) {

			//title butons
			int ofs=cache.bg->get_margin(MARGIN_LEFT);
			for(int i=0;i<columns.size();i++) {

				Ref<StyleBox> sb = (cache.click_type==Cache::CLICK_TITLE && cache.click_index==i)?cache.title_button_pressed:((cache.hover_type==Cache::CLICK_TITLE && cache.hover_index==i)?cache.title_button_hover:cache.title_button);
				Ref<Font> f = cache.tb_font;
				Rect2 tbrect = Rect2(ofs - cache.offset.x,bg->get_margin(MARGIN_TOP),get_column_width(i),tbh);
				sb->draw(ci,tbrect);
				ofs+=tbrect.size.width;
				//text
				int clip_w = tbrect.size.width - sb->get_minimum_size().width;
				f->draw_halign(ci,tbrect.pos+Point2i(sb->get_offset().x,(tbrect.size.height-f->get_height())/2+f->get_ascent()),HALIGN_CENTER,clip_w,columns[i].title,cache.title_button_color);
			}
		}
	}

	if (p_what==NOTIFICATION_THEME_CHANGED) {
		update_cache();
	}

}




Size2 Tree::get_minimum_size() const {

	return Size2(1,1);
}

TreeItem *Tree::create_item(TreeItem *p_parent) {

	ERR_FAIL_COND_V(blocked>0,NULL);

	TreeItem *ti = memnew( TreeItem(this) );

	ti->cells.resize( columns.size() );
	ERR_FAIL_COND_V(!ti,NULL);

	if (p_parent) {

		/* Always append at the end */

		TreeItem *last=0;
		TreeItem *c=p_parent->childs;

		while(c) {

			last=c;
			c=c->next;
		}

		if (last) {

			last->next=ti;
		} else {

			p_parent->childs=ti;
		}
		ti->parent=p_parent;

	} else {

		if (root)
			ti->childs=root;

		root=ti;

	}


	return ti;
}

TreeItem* Tree::get_root() {

	return root;
}
TreeItem* Tree::get_last_item() {

	TreeItem *last=root;

	while(last) {

		if (last->next)
			last=last->next;
		else if (last->childs)
			last=last->childs;
		else
			break;
	}

	return last;
}

void Tree::item_edited(int p_column,TreeItem *p_item) {

	edited_item=p_item;
	edited_col=p_column;
	emit_signal("item_edited");
}

void Tree::item_changed(int p_column,TreeItem *p_item) {

	update();
}

void Tree::item_selected(int p_column,TreeItem *p_item) {


	if (select_mode==SELECT_MULTI) {

		if (!p_item->cells[p_column].selectable)
			return;

		p_item->cells[p_column].selected=true;
		//emit_signal("multi_selected",p_item,p_column,true); - NO this is for TreeItem::select

	} else {
		select_single_item(p_item,root,p_column);
	}
	update();
}

void Tree::item_deselected(int p_column,TreeItem *p_item) {

	if (select_mode==SELECT_MULTI || select_mode == SELECT_SINGLE) {
		p_item->cells[p_column].selected=false;
	}
	update();
}


void Tree::set_select_mode(SelectMode p_mode) {

	select_mode=p_mode;
}

void Tree::clear() {

	if (blocked>0) {

		ERR_FAIL_COND(blocked>0);
	}

	if (pressing_for_editor) {
		if (range_drag_enabled) {
			range_drag_enabled = false;
			Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_VISIBLE);
			warp_mouse(range_drag_capture_pos);
		}
		pressing_for_editor = false;
	}

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

	selected_item=NULL;
	edited_item=NULL;
	popup_edited_item=NULL;

	update();
};



void Tree::set_hide_root(bool p_enabled) {



	hide_root=p_enabled;
	update();
}

void Tree::set_column_min_width(int p_column,int p_min_width) {


	ERR_FAIL_INDEX(p_column,columns.size());

	if (p_min_width<1)
		return;
	columns[p_column].min_width=p_min_width;
	update();

}
void Tree::set_column_expand(int p_column,bool p_expand) {

	ERR_FAIL_INDEX(p_column,columns.size());

	columns[p_column].expand=p_expand;
	update();
}

TreeItem *Tree::get_selected() const {

	return selected_item;
}

int Tree::get_selected_column() const {

	return selected_col;
}

TreeItem *Tree::get_edited() const {

	return edited_item;
}

int Tree::get_edited_column() const {

	return edited_col;
}

TreeItem* Tree::get_next_selected( TreeItem* p_item) {

	//if (!p_item)
	//	return NULL;
	if (!root)
		return NULL;

	while(true) {


		if (!p_item) {
			p_item=root;
		} else {

			if (p_item->childs) {

				p_item=p_item->childs;

			} else if (p_item->next) {

				p_item=p_item->next;
			} else {

				while(!p_item->next) {

					p_item=p_item->parent;
					if (p_item==NULL)
						return NULL;
				}

				p_item=p_item->next;
			}

		}

		for (int i=0;i<columns.size();i++)
			if (p_item->cells[i].selected)
				return p_item;
	}

	return NULL;
}

int Tree::get_column_width(int p_column) const {

	ERR_FAIL_INDEX_V(p_column,columns.size(),-1);


	if (!columns[p_column].expand)
		return columns[p_column].min_width;

	Ref<StyleBox> bg = cache.bg;

	int expand_area=get_size().width-(bg->get_margin(MARGIN_LEFT)+bg->get_margin(MARGIN_RIGHT));

	if (v_scroll->is_visible())
		expand_area-=v_scroll->get_combined_minimum_size().width;

	int expanding_columns=0;
	int expanding_total=0;

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

		if (!columns[i].expand) {
			expand_area-=columns[i].min_width;
		} else {
			expanding_total+=columns[i].min_width;
			expanding_columns++;
		}
	}

	if (expand_area<expanding_total)
		return columns[p_column].min_width;

	ERR_FAIL_COND_V(expanding_columns==0,-1); // shouldnt happen

	return expand_area * columns[p_column].min_width / expanding_total;
}

void Tree::propagate_set_columns(TreeItem *p_item) {

	p_item->cells.resize( columns.size() );

	TreeItem *c = p_item->get_children();
	while(c) {

		propagate_set_columns(c);
		c=c->get_next();
	}
}

void Tree::set_columns(int p_columns) {

	ERR_FAIL_COND(p_columns<1);
	ERR_FAIL_COND(blocked>0);
	columns.resize(p_columns);

	if (root)
		propagate_set_columns(root);
	if (selected_col>=p_columns)
		selected_col=p_columns-1;
	update();

}

int Tree::get_columns() const {

	return columns.size();
}

void Tree::_scroll_moved(float) {

	update();
}

Rect2 Tree::get_custom_popup_rect() const {

	return custom_popup_rect;
}

int Tree::get_item_offset(TreeItem *p_item) const {

	TreeItem *it=root;
	int ofs=_get_title_button_height();
	if (!it)
		return 0;

	while(true) {

		if (it==p_item)
			return ofs;

		ofs+=compute_item_height(it)+cache.vseparation;

		if (it->childs && !it->collapsed) {

			it=it->childs;

		} else if (it->next) {

			it=it->next;
		} else {

			while(!it->next) {

				it=it->parent;
				if (it==NULL)
					return 0;
			}

			it=it->next;
		}
	}

	return -1; //not found
}

void Tree::ensure_cursor_is_visible() {

	if (!is_inside_tree())
		return;

	TreeItem *selected = get_selected();
	if (!selected)
		return;
	int ofs = get_item_offset(selected);
	if (ofs==-1)
		return;
	int h = compute_item_height(selected)+cache.vseparation;
	int screenh=get_size().height-h_scroll->get_combined_minimum_size().height;

	if (ofs+h>v_scroll->get_val()+screenh)
		v_scroll->call_deferred("set_val", ofs-screenh+h);
	else if (ofs < v_scroll->get_val())
		v_scroll->set_val(ofs);
}

int Tree::get_pressed_button() const {

	return pressed_button;
}


Rect2 Tree::get_item_rect(TreeItem *p_item,int p_column) const {

	ERR_FAIL_NULL_V(p_item,Rect2());
	ERR_FAIL_COND_V(p_item->tree!=this,Rect2());
	if (p_column!=-1) {
		ERR_FAIL_INDEX_V(p_column,columns.size(),Rect2());
	}

	int ofs = get_item_offset(p_item);
	int height = compute_item_height(p_item);
	Rect2 r;
	r.pos.y=ofs;
	r.size.height=height;

	if (p_column==-1) {
		r.pos.x=0;
		r.size.x=get_size().width;
	} else {

		int accum=0;
		for(int i=0;i<p_column;i++) {
			accum+=get_column_width(i);
		}
		r.pos.x=accum;
		r.size.x=get_column_width(p_column);
	}

	return r;
}

void Tree::set_column_titles_visible(bool p_show) {

	show_column_titles=p_show;
	update();
}

bool Tree::are_column_titles_visible() const {

	return show_column_titles;
}

void Tree::set_column_title(int p_column,const String& p_title) {

	ERR_FAIL_INDEX(p_column,columns.size());
	columns[p_column].title=p_title;
	update();
}

String Tree::get_column_title(int p_column) const {

	ERR_FAIL_INDEX_V(p_column,columns.size(),"");
	return columns[p_column].title;
}

Point2 Tree::get_scroll() const {

	Point2 ofs;
	if (h_scroll->is_visible())
		ofs.x=h_scroll->get_val();
	if (v_scroll->is_visible())
		ofs.y=v_scroll->get_val();
	return ofs;

}

TreeItem* Tree::_search_item_text(TreeItem *p_at, const String& p_find,int *r_col,bool p_selectable,bool p_backwards) {



	while(p_at) {

		for(int i=0;i<columns.size();i++) {
			if (p_at->get_text(i).findn(p_find)==0 && (!p_selectable || p_at->is_selectable(i))) {
				if (r_col)
					*r_col=i;
				return p_at;
			}
		}

		if (p_backwards)
			p_at=p_at->get_prev_visible();
		else
			p_at=p_at->get_next_visible();
	}

	return NULL;

}


TreeItem* Tree::search_item_text(const String& p_find,int *r_col,bool p_selectable) {

	if (!root)
		return NULL;

	return _search_item_text(root,p_find,r_col,p_selectable);

}

void Tree::_do_incr_search(const String& p_add) {

	uint64_t time = OS::get_singleton()->get_ticks_usec() / 1000; // convert to msec
	uint64_t diff = time - last_keypress;
	if (diff > uint64_t(GLOBAL_DEF("gui/incr_search_max_interval_msec",2000)))
		incr_search=p_add;
	else
		incr_search+=p_add;


	last_keypress=time;
	int col;
	TreeItem *item = search_item_text(incr_search,&col,true);
	if (!item)
		return;

	item->select(col);
	ensure_cursor_is_visible();


}

TreeItem* Tree::_find_item_at_pos(TreeItem*p_item, const Point2& p_pos,int& r_column,int &h,int &section) const {

	Point2 pos = p_pos;


	if (root!=p_item || ! hide_root) {

		h = compute_item_height(p_item)+cache.vseparation;;
		if (pos.y<h) {

			if (drop_mode_flags==DROP_MODE_ON_ITEM) {
				section=0;
			} else if (drop_mode_flags==DROP_MODE_INBETWEEN) {
				section=pos.y<h/2?-1:1;
			} else if (pos.y<h/4) {
				section=-1;
			} else if (pos.y>=(h*3/4)) {
				section=1;
			} else {
				section=0;
			}

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

				int w = get_column_width(i);
				if (pos.x < w) {
					r_column=i;


					return p_item;
				}
				pos.x-=w;
			}




			return NULL;
		} else {

			pos.y-=h;
		}
	} else {

		h=0;
	}

	if (p_item->is_collapsed())
		return NULL; // do not try childs, it's collapsed

	TreeItem *n = p_item->get_children();
	while(n) {


		int ch;
		TreeItem *r = _find_item_at_pos(n,pos,r_column,ch,section);
		pos.y-=ch;
		h+=ch;
		if (r)
			return r;
		n=n->get_next();
	}

	return NULL;

}

int Tree::get_column_at_pos(const Point2& p_pos) const {

	if (root) {

		Point2 pos=p_pos;
		pos -= cache.bg->get_offset();
		pos.y-=_get_title_button_height();
		if (pos.y<0)
			return -1;

		if (h_scroll->is_visible())
			pos.x+=h_scroll->get_val();
		if (v_scroll->is_visible())
			pos.y+=v_scroll->get_val();

		int col,h,section;
		TreeItem *it = _find_item_at_pos(root,pos,col,h,section);

		if (it) {
			return col;
		}
	}

	return -1;

}

int Tree::get_drop_section_at_pos(const Point2& p_pos) const {

	if (root) {

		Point2 pos=p_pos;
		pos -= cache.bg->get_offset();
		pos.y-=_get_title_button_height();
		if (pos.y<0)
			return -100;

		if (h_scroll->is_visible())
			pos.x+=h_scroll->get_val();
		if (v_scroll->is_visible())
			pos.y+=v_scroll->get_val();

		int col,h,section;
		TreeItem *it = _find_item_at_pos(root,pos,col,h,section);

		if (it) {
			return section;
		}
	}

	return -100;

}
TreeItem* Tree::get_item_at_pos(const Point2& p_pos) const {


	if (root) {

		Point2 pos=p_pos;
		pos -= cache.bg->get_offset();
		pos.y-=_get_title_button_height();
		if (pos.y<0)
			return NULL;

		if (h_scroll->is_visible())
			pos.x+=h_scroll->get_val();
		if (v_scroll->is_visible())
			pos.y+=v_scroll->get_val();

		int col,h,section;
		TreeItem *it = _find_item_at_pos(root,pos,col,h,section);

		if (it) {

			return it;
		}
	}

	return NULL;

}

String Tree::get_tooltip(const Point2& p_pos) const {

	if (root) {

		Point2 pos=p_pos;
		pos -= cache.bg->get_offset();
		pos.y-=_get_title_button_height();
		if (pos.y<0)
			return Control::get_tooltip(p_pos);

		if (h_scroll->is_visible())
			pos.x+=h_scroll->get_val();
		if (v_scroll->is_visible())
			pos.y+=v_scroll->get_val();

		int col,h,section;
		TreeItem *it = _find_item_at_pos(root,pos,col,h,section);


		if (it) {

			String ret;
			if (it->get_tooltip(col)=="")
				ret=it->get_text(col);
			else
				ret=it->get_tooltip(col);
			return ret;
		}
	}

	return Control::get_tooltip(p_pos);
}

void Tree::set_cursor_can_exit_tree(bool p_enable) {

	cursor_can_exit_tree=p_enable;
}

bool Tree::can_cursor_exit_tree() const {

	return cursor_can_exit_tree;
}

void Tree::set_hide_folding(bool p_hide) {
	hide_folding=p_hide;
	update();
}

bool Tree::is_folding_hidden() const {

	return hide_folding;
}

void Tree::set_value_evaluator(ValueEvaluator *p_evaluator) {
	evaluator = p_evaluator;
}

void Tree::set_drop_mode_flags(int p_flags) {
	if (drop_mode_flags==p_flags)
		return;
	drop_mode_flags=p_flags;
	if (drop_mode_flags==0) {
		drop_mode_over=NULL;
	}

	update();
}

int Tree::get_drop_mode_flags() const {

	return drop_mode_flags;
}

void Tree::set_single_select_cell_editing_only_when_already_selected(bool p_enable) {

	force_select_on_already_selected=p_enable;
}

bool Tree::get_single_select_cell_editing_only_when_already_selected() const {

	return force_select_on_already_selected;
}


void Tree::set_allow_rmb_select(bool p_allow) {

	allow_rmb_select=p_allow;
}

bool Tree::get_allow_rmb_select() const{

	return allow_rmb_select;
}

void Tree::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("_range_click_timeout"),&Tree::_range_click_timeout);
	ObjectTypeDB::bind_method(_MD("_input_event"),&Tree::_input_event);
	ObjectTypeDB::bind_method(_MD("_popup_select"),&Tree::popup_select);
	ObjectTypeDB::bind_method(_MD("_text_editor_enter"),&Tree::text_editor_enter);
	ObjectTypeDB::bind_method(_MD("_text_editor_modal_close"),&Tree::_text_editor_modal_close);
	ObjectTypeDB::bind_method(_MD("_value_editor_changed"),&Tree::value_editor_changed);
	ObjectTypeDB::bind_method(_MD("_scroll_moved"),&Tree::_scroll_moved);

	ObjectTypeDB::bind_method(_MD("clear"),&Tree::clear);
	ObjectTypeDB::bind_method(_MD("create_item:TreeItem","parent:TreeItem"),&Tree::_create_item,DEFVAL(Variant()));

	ObjectTypeDB::bind_method(_MD("get_root:TreeItem"),&Tree::get_root);
	ObjectTypeDB::bind_method(_MD("set_column_min_width","column","min_width"),&Tree::set_column_min_width);
	ObjectTypeDB::bind_method(_MD("set_column_expand","column","expand"),&Tree::set_column_expand);
	ObjectTypeDB::bind_method(_MD("get_column_width","column"),&Tree::get_column_width);

	ObjectTypeDB::bind_method(_MD("set_hide_root","enable"),&Tree::set_hide_root);
	ObjectTypeDB::bind_method(_MD("get_next_selected:TreeItem","from:TreeItem"),&Tree::_get_next_selected);
	ObjectTypeDB::bind_method(_MD("get_selected:TreeItem"),&Tree::get_selected);
	ObjectTypeDB::bind_method(_MD("get_selected_column"),&Tree::get_selected_column);
	ObjectTypeDB::bind_method(_MD("get_pressed_button"),&Tree::get_pressed_button);
	ObjectTypeDB::bind_method(_MD("set_select_mode","mode"),&Tree::set_select_mode);

	ObjectTypeDB::bind_method(_MD("set_columns","amount"),&Tree::set_columns);
	ObjectTypeDB::bind_method(_MD("get_columns"),&Tree::get_columns);

	ObjectTypeDB::bind_method(_MD("get_edited:TreeItem"),&Tree::get_edited);
	ObjectTypeDB::bind_method(_MD("get_edited_column"),&Tree::get_edited_column);
	ObjectTypeDB::bind_method(_MD("get_custom_popup_rect"),&Tree::get_custom_popup_rect);
	ObjectTypeDB::bind_method(_MD("get_item_area_rect","item:TreeItem","column"),&Tree::_get_item_rect,DEFVAL(-1));
	ObjectTypeDB::bind_method(_MD("get_item_at_pos:TreeItem","pos"),&Tree::get_item_at_pos);
	ObjectTypeDB::bind_method(_MD("get_column_at_pos","pos"),&Tree::get_column_at_pos);

	ObjectTypeDB::bind_method(_MD("ensure_cursor_is_visible"),&Tree::ensure_cursor_is_visible);

	ObjectTypeDB::bind_method(_MD("set_column_titles_visible","visible"),&Tree::set_column_titles_visible);
	ObjectTypeDB::bind_method(_MD("are_column_titles_visible"),&Tree::are_column_titles_visible);

	ObjectTypeDB::bind_method(_MD("set_column_title","column","title"),&Tree::set_column_title);
	ObjectTypeDB::bind_method(_MD("get_column_title","column"),&Tree::get_column_title);
	ObjectTypeDB::bind_method(_MD("get_scroll"),&Tree::get_scroll);

	ObjectTypeDB::bind_method(_MD("set_hide_folding","hide"),&Tree::set_hide_folding);
	ObjectTypeDB::bind_method(_MD("is_folding_hidden"),&Tree::is_folding_hidden);

	ObjectTypeDB::bind_method(_MD("set_drop_mode_flags","flags"),&Tree::set_drop_mode_flags);
	ObjectTypeDB::bind_method(_MD("get_drop_mode_flags"),&Tree::get_drop_mode_flags);

	ObjectTypeDB::bind_method(_MD("set_allow_rmb_select","allow"),&Tree::set_allow_rmb_select);
	ObjectTypeDB::bind_method(_MD("get_allow_rmb_select"),&Tree::get_allow_rmb_select);


	ObjectTypeDB::bind_method(_MD("set_single_select_cell_editing_only_when_already_selected","enable"),&Tree::set_single_select_cell_editing_only_when_already_selected);
	ObjectTypeDB::bind_method(_MD("get_single_select_cell_editing_only_when_already_selected"),&Tree::get_single_select_cell_editing_only_when_already_selected);

	ADD_SIGNAL( MethodInfo("item_selected"));
	ADD_SIGNAL( MethodInfo("cell_selected"));
	ADD_SIGNAL( MethodInfo("multi_selected",PropertyInfo(Variant::OBJECT,"item"),PropertyInfo(Variant::INT,"column"),PropertyInfo(Variant::BOOL,"selected")) );
	ADD_SIGNAL( MethodInfo("item_rmb_selected",PropertyInfo(Variant::VECTOR2,"pos")));
	ADD_SIGNAL( MethodInfo("empty_tree_rmb_selected",PropertyInfo(Variant::VECTOR2,"pos")));
	ADD_SIGNAL( MethodInfo("item_edited"));
	ADD_SIGNAL( MethodInfo("item_collapsed",PropertyInfo(Variant::OBJECT,"item")));
	//ADD_SIGNAL( MethodInfo("item_doubleclicked" ) );
	ADD_SIGNAL( MethodInfo("button_pressed",PropertyInfo(Variant::OBJECT,"item"),PropertyInfo(Variant::INT,"column"),PropertyInfo(Variant::INT,"id")));
	ADD_SIGNAL( MethodInfo("custom_popup_edited",PropertyInfo(Variant::BOOL,"arrow_clicked") ) );
	ADD_SIGNAL( MethodInfo("item_activated"));

	BIND_CONSTANT( SELECT_SINGLE );
	BIND_CONSTANT( SELECT_ROW );
	BIND_CONSTANT( SELECT_MULTI );

	BIND_CONSTANT( DROP_MODE_DISABLED );
	BIND_CONSTANT( DROP_MODE_ON_ITEM );
	BIND_CONSTANT( DROP_MODE_INBETWEEN );

}

Tree::Tree() {

	selected_col=0;
	columns.resize(1);
	selected_item=NULL;
	edited_item=NULL;
	selected_col=-1;
	edited_col=-1;

	hide_root=false;
	select_mode=SELECT_SINGLE;
	root=0;
	popup_menu=NULL;
	popup_edited_item=NULL;
	text_editor=NULL;
	set_focus_mode(FOCUS_ALL);


	popup_menu = memnew( PopupMenu );
	popup_menu->hide();
	add_child(popup_menu);
	popup_menu->set_as_toplevel(true);
	text_editor = memnew( LineEdit );
	add_child(text_editor);
	text_editor->set_as_toplevel(true);
	text_editor->hide();
	value_editor = memnew( HSlider );
	add_child(value_editor);
	value_editor->set_as_toplevel(true);
	value_editor->hide();

	h_scroll = memnew( HScrollBar );
	v_scroll = memnew( VScrollBar );

	add_child(h_scroll);
	add_child(v_scroll);

	range_click_timer = memnew( Timer );
	range_click_timer->connect("timeout",this,"_range_click_timeout");
	add_child(range_click_timer);

	h_scroll->connect("value_changed", this,"_scroll_moved");
	v_scroll->connect("value_changed", this,"_scroll_moved");
	text_editor->connect("text_entered", this,"_text_editor_enter");
	text_editor->connect("modal_close", this,"_text_editor_modal_close");
	popup_menu->connect("item_pressed", this,"_popup_select");
	value_editor->connect("value_changed", this,"_value_editor_changed");

	value_editor->set_as_toplevel(true);
	text_editor->set_as_toplevel(true);

	updating_value_editor=false;
	pressed_button=-1;
	show_column_titles=false;

	cache.click_type = Cache::CLICK_NONE;
	cache.hover_type = Cache::CLICK_NONE;
	cache.hover_index = -1;
	cache.click_index=-1;
	cache.click_id=-1;
	cache.click_item=NULL;
	cache.click_column=0;
	last_keypress=0;
	focus_in_id=0;

	blocked=0;

	cursor_can_exit_tree=true;
	set_stop_mouse(true);

	drag_speed=0;
	drag_touching=false;
	drag_touching_deaccel=false;
	pressing_for_editor=false;
	range_drag_enabled=false;

	hide_folding=false;

	evaluator=NULL;

	drop_mode_flags=0;
	drop_mode_over=NULL;
	drop_mode_section=0;
	single_select_defer=NULL;
	force_select_on_already_selected=false;

	allow_rmb_select=false;
}


Tree::~Tree() {

	if (root) {
		memdelete( root );
	}

}