Notes/src/public/app/widgets/right_panel_widget.ts

import BasicWidget from "./basic_widget.js";
import AbstractButtonWidget from "./buttons/abstract_button.js";
import NoteContextAwareWidget from "./note_context_aware_widget.js";

const WIDGET_TPL = `
<div class="card widget">
    <div class="card-header">
        <div class="card-header-title"></div>
        <div class="card-header-buttons"></div>
    </div>

    <div id="[to be set]" class="body-wrapper">
        <div class="card-body"></div>
    </div>
</div>`;

/**
 * This widget manages rendering panels in the right-hand pane.
 */
class RightPanelWidget extends NoteContextAwareWidget {
    private $bodyWrapper!: JQuery<HTMLElement>;
    $body!: JQuery<HTMLElement>;
    private $title!: JQuery<HTMLElement>;
    private $buttons!: JQuery<HTMLElement>;

    /** Title to show in the panel. */
    get widgetTitle() {
        return "Untitled widget";
    }

    get widgetButtons(): AbstractButtonWidget<any>[] {
        return [];
    }

    get help() {
        return {};
    }

    constructor() {
        super();

        this.child(...this.widgetButtons);
    }

    /**
     * Do not override this method unless you know what you're doing.
     * Do not override this method unless you know what you're doing.
     */
    doRender() {
        this.$widget = $(WIDGET_TPL);
        this.contentSized();
        this.$widget.find("[data-target]").attr("data-target", `#${this.componentId}`);

        this.$bodyWrapper = this.$widget.find(".body-wrapper");
        this.$bodyWrapper.attr("id", this.componentId); // for toggle to work we need id

        this.$body = this.$bodyWrapper.find(".card-body");

        this.$title = this.$widget.find(".card-header .card-header-title");
        this.$title.text(this.widgetTitle);

        this.$buttons = this.$widget.find(".card-header .card-header-buttons");
        this.$buttons.empty();

        for (const buttonWidget of this.children) {
            this.$buttons.append((buttonWidget as BasicWidget).render());
        }

        this.initialized = this.doRenderBody().catch((e) => {
            this.logRenderingError(e);
        });
    }

    /**
     * Method used for rendering the body of the widget (via existing this.$body)
     *
     * Your class should override this method.
     * @returns {Promise|undefined} if widget needs async operation to initialize, it can return a Promise
     */
    async doRenderBody() {}
}

export default RightPanelWidget;