Method indexOf

tiling.js:1316–1322

(metaWindow)

    }

    indexOf(metaWindow) {
        for (let i = 0; i < this.length; i++) {
            if (this[i].includes(metaWindow))
                return i;
        }
        return -1;
    }

    rowOf(metaWindow) {
        let column = this[this.indexOf(metaWindow)];