nehan/dist/dom-token-list.js

Html layout engine for paged-media written in Typescript

export class DomTokenList {
    constructor(items) {
        this.tokens = items || [];
    }
    get length() {
        return this.tokens.length;
    }
    item(index) {
        return this.tokens[index];
    }
    contains(token) {
        return this.tokens.some((t) => {
            return t === token;
        });
    }
    add(token) {
        this.tokens.push(token);
    }
    remove(token) {
        return this.tokens = this.tokens.filter((t) => {
            return t !== token;
        });
    }
    replace(old_token, new_token) {
        return this.tokens = this.tokens.map((t) => {
            return (t === old_token) ? new_token : t;
        });
    }
    supports(token) {
        throw new Error("Sorry, not implemented yet");
    }
    toggle(token, force) {
        let contains = this.contains(token);
        if (force === true) {
            if (contains === false) {
                this.add(token);
            }
            return true;
        }
        if (force === false) {
            if (contains === true) {
                this.remove(token);
            }
            return false;
        }
        if (contains === true) {
            this.remove(token);
            return false;
        }
        this.add(token);
        return true;
    }
    entries() {
        return this.tokens;
    }
    keys() {
        return Object.keys(this.tokens);
    }
    values() {
        return this.tokens;
    }
    forEach(callback) {
        Array.prototype.forEach.call(this.tokens, callback);
    }
}
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