ohos-xournalpp/entry/src/main/ets/components/Menubar.ets

import { UIComponent, analysisXML } from "../utils/XMLHandler";
import { common } from '@kit.AbilityKit';
import { util } from '@kit.ArkTS';
import { BusinessError } from '@kit.BasicServicesKit';



@ComponentV2


export struct Menubar {
    private content: common.UIAbilityContext = this.getUIContext().getHostContext() as common.UIAbilityContext;
    @Local ui_components: UIComponent[] = [];

    aboutToAppear() {
        const xml_string = this.getXML();
        this.ui_components = analysisXML(xml_string);
    }

    getXML(): string {
        try {
            let data: Uint8Array = this.content.resourceManager.getRawFileContentSync("mainmenubar.xml");
            let text_decoder: util.TextDecoder = util.TextDecoder.create("utf-8", { ignoreBOM: true });
            let xml_string: string = text_decoder.decodeToString(data, { stream: false });
            return xml_string;
        } catch (err) {
            let code: number = (err as BusinessError).code;
            let message: string = (err as BusinessError).message;
            console.log(`[Error](${code}): ${message}`);
            return "";
        }
    }

    @Builder
    buildMenu(items: UIComponent[]) {
        Menu() {
        ForEach(items, (item: UIComponent) => {
            if (item.isSection === true) {
                MenuItemGroup() {
                    ForEach(item.children || [], (sub: UIComponent) => {
                        this.buildMenuItem(sub);
                    }, (sub: UIComponent, idx) => idx.toString())
                }
            } else {
                this.buildMenuItem(item);
            }
        }, (item: UIComponent, idx) => idx.toString());
        }
    }

    @Builder
    buildMenuItem(item: UIComponent) {
        if (item.children && item.children?.length > 0) {
            MenuItem({ content: item.label, labelInfo: item.accel }) {
                this.buildSubMenu(item.children || []);
            }
        } else {
            MenuItem({ content: item.label, labelInfo: item.accel });
        }
    }

    @Builder
    buildSubMenu(items: UIComponent[]) {
        Menu() {
        ForEach(items, (sub: UIComponent) => {
        if (sub.children && sub.children?.length > 0) {
            MenuItem({ content: sub.label, labelInfo: sub.accel }) {
                this.buildSubMenu(sub.children || []);
            }
        } else {
            MenuItem({ content: sub.label, labelInfo: sub.accel });
        }
        }, (sub: UIComponent, idx) => idx.toString())
        }
    }

    build() {
        Row() {
            ForEach(this.ui_components, (menu: UIComponent) => {
                Text(menu.label)
                .bindMenu(this.buildMenu(menu.children || []))
                .padding('10vp')
            }, (menu: UIComponent, idx) => idx.toString())
        }
    }
}