import FGUtil from "./FGUtil";
import SKTimeUtil from "../util/SKTimeUtil";

export default class FGHUD {

    private static shared = new FGHUD();
    static packageName: string = "main_ui";
    static resName: string = "loading_main";

    main: fgui.GComponent;
    title: fgui.GTextField;
    handle: number = 0;

    constructor() {
    }

    static showLoading(text: string = "", timeout: number = 15000) {
        this.shared.showLoading(text, timeout);
    }

    static hideLoading() {
        this.shared.hideLoading();
    }

    private showLoading(text: string, timeout: number) {
        if (!this.main) {
            this.main = FGUtil.create(FGHUD.packageName, FGHUD.resName);
            this.title = FGUtil.getTextField(this.main, "title");
        }
        if (!this.main) {
cc.log(`找不到GUI資源:${FGHUD.packageName}:${FGHUD.resName}`);
            return;
        }
        this.handle = SKTimeUtil.cancelDelay(this.handle);
        if (!this.main.parent) {
            let root = FGUtil.root();
            if (root) {
                if (this.title) {
                    if (text.length > 0) {
                        this.title.text = text;
                        this.title.visible = true;
                    } else {
                        this.title.text = "";
                        this.title.visible = false;
                    }
                }
                root.addChild(this.main);
                FGUtil.fitScreen(this.main);
            }
        }
        this.handle = SKTimeUtil.delay(this.hideLoading.bind(this), timeout);
    }

    private hideLoading() {
        if (this.main == null) {
            return;
        }
        if (this.main.parent) {
            if (this.title) {
                this.title.text = "";
                this.title.visible = false;
            }
            this.main.removeFromParent();
        }
    }
}