/****************************************************************************
 * Copyright 2017 EPAM Systems
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ***************************************************************************/

var ReObject = require('./reobject');
var Box2Abs = require('../../util/box2abs');
var Vec2 = require('../../util/vec2');
var draw = require('../draw');
var util = require('../util');
var scale = require('../../util/scale');

function ReRxnArrow(/* chem.RxnArrow*/arrow) {
	this.init('rxnArrow');

	this.item = arrow;
}
ReRxnArrow.prototype = new ReObject();
ReRxnArrow.isSelectable = function () {
	return true;
};

ReRxnArrow.prototype.highlightPath = function (render) {
	var p = scale.obj2scaled(this.item.pp, render.options);
	var s = render.options.scale;
	return render.paper.rect(p.x - s, p.y - s / 4, 2 * s, s / 2, s / 8); // eslint-disable-line no-mixed-operators
};

ReRxnArrow.prototype.drawHighlight = function (render) {
	var ret = this.highlightPath(render).attr(render.options.highlightStyle);
	render.ctab.addReObjectPath('highlighting', this.visel, ret);
	return ret;
};

ReRxnArrow.prototype.makeSelectionPlate = function (restruct, paper, styles) {
	return this.highlightPath(restruct.render).attr(styles.selectionStyle);
};

ReRxnArrow.prototype.show = function (restruct, id, options) {
	var render = restruct.render;
	var centre = scale.obj2scaled(this.item.pp, options);
	var path = draw.arrow(render.paper,
		new Vec2(centre.x - options.scale, centre.y),
		new Vec2(centre.x + options.scale, centre.y),
		options);
	var offset = options.offset;
	if (offset != null)
		path.translateAbs(offset.x, offset.y);
	this.visel.add(path, Box2Abs.fromRelBox(util.relBox(path.getBBox())));
};

module.exports = ReRxnArrow;