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/** * Copyright (c) 2017 ~ present NAVER Corp. * billboard.js project is licensed under the MIT license */import {isNumber, setTextValue} from "../../module/util";import {$TEXT} from "../../config/classes";
/** * Get the text position * @param {string} pos right, left or center * @param {number} width chart width * @returns {string|number} text-anchor value or position in pixel * @private */function getTextPos(pos = "left", width?: number | any): number | "start" | "middle" | "end" {	const isNum = isNumber(width);	let position;
	if (pos.indexOf("center") > -1) {		position = isNum ? width / 2 : "middle";	} else if (pos.indexOf("right") > -1) {		position = isNum ? width : "end";	} else {		position = isNum ? 0 : "start";	}
	return position;}
export default {	/**	 * Initializes the title	 * @private	 */	initTitle(): void {		const $$ = this;		const {config, $el} = $$;
		if (config.title_text) {			$el.title = $el.svg.append("g");
			const text = $el.title				.append("text")				.style("text-anchor", getTextPos(config.title_position))				.attr("class", $TEXT.title);
			setTextValue(text, config.title_text, [0.3, 1.5]);		}	},
	/**	 * Redraw title	 * @private	 */	redrawTitle(): void {		const $$ = this;		const {config, state: {current}, $el: {title}} = $$;
		if (title) {			const y = $$.yForTitle.call($$);
			if (/g/i.test(title.node().tagName)) {				title.attr("transform", `translate(${getTextPos(config.title_position, current.width)}, ${y})`);			} else {				title.attr("x", $$.xForTitle.call($$)).attr("y", y);			}		}	},
	/**	 * Returns the x attribute value of the title	 * @returns {number} x attribute value	 * @private	 */	xForTitle(): number {		const $$ = this;		const {config, state: {current}} = $$;		const position = config.title_position || "left";		const textRectWidth = $$.getTextRect($$.$el.title, $TEXT.title).width;		let x;
		if (/(right|center)/.test(position)) {			x = current.width - textRectWidth;
			if (position.indexOf("right") >= 0) {				x = current.width - textRectWidth - config.title_padding.right;			} else if (position.indexOf("center") >= 0) {				x = (current.width - textRectWidth) / 2;			}		} else { // left			x = (config.title_padding.left || 0);		}
		return x;	},
	/**	 * Returns the y attribute value of the title	 * @returns {number} y attribute value	 * @private	 */	yForTitle(): number {		const $$ = this;
		return ($$.config.title_padding.top || 0) +			$$.getTextRect($$.$el.title, $TEXT.title).height;	},
	/**	 * Get title padding	 * @returns {number} padding value	 * @private	 */	getTitlePadding(): number {		const $$ = this;
		return $$.yForTitle() + ($$.config.title_padding.bottom || 0);	},};