the-obelisk/app/Elements/Classes/Say/SayIf.ts

/// <reference path="../Say.ts" />
class SayIf extends Say {
    private condition : () => boolean;
    public constructor (condition : () => boolean, ...objs : Array<any>) {
        super(...objs);
        this.condition = condition != undefined ? condition : () => { return true; };
    }

    public async getPureElements () : Promise<Array<Element | Text>> {
        if (this.condition()) {
            let paragraphs = await  this.getParagraphs();
            return paragraphs.length == 1 ? paragraphs[0] : Array.prototype.concat.apply([], paragraphs);
        }
        return [];
    }
}