@jupyter-widgets/base/lib/errorwidget.js

import { DOMWidgetModel, DOMWidgetView, } from './widget';
import { JUPYTER_WIDGETS_VERSION } from './version';
import { BROKEN_FILE_SVG_ICON } from './utils';
// create a Widget Model that captures an error object
export function createErrorWidgetModel(error, msg) {
    class ErrorWidget extends DOMWidgetModel {
        constructor(attributes, options) {
            attributes = Object.assign(Object.assign({}, attributes), { _view_name: 'ErrorWidgetView', _view_module: '@jupyter-widgets/base', _model_module_version: JUPYTER_WIDGETS_VERSION, _view_module_version: JUPYTER_WIDGETS_VERSION, msg: msg, error: error });
            super(attributes, options);
            this.comm_live = true;
        }
    }
    return ErrorWidget;
}
export class ErrorWidgetView extends DOMWidgetView {
    generateErrorMessage() {
        return {
            msg: this.model.get('msg'),
            stack: String(this.model.get('error').stack),
        };
    }
    render() {
        const { msg, stack } = this.generateErrorMessage();
        this.el.classList.add('jupyter-widgets');
        const content = document.createElement('div');
        content.classList.add('jupyter-widgets-error-widget', 'icon-error');
        content.innerHTML = BROKEN_FILE_SVG_ICON;
        const text = document.createElement('pre');
        text.style.textAlign = 'center';
        text.innerText = 'Click to show javascript error.';
        content.append(text);
        this.el.appendChild(content);
        let width;
        let height;
        this.el.onclick = () => {
            if (content.classList.contains('icon-error')) {
                height = height || content.clientHeight;
                width = width || content.clientWidth;
                content.classList.remove('icon-error');
                content.innerHTML = `
        <pre>[Open Browser Console for more detailed log - Double click to close this message]\n${msg}\n${stack}</pre>
        `;
                content.style.height = `${height}px`;
                content.style.width = `${width}px`;
                content.classList.add('text-error');
            }
        };
        this.el.ondblclick = () => {
            if (content.classList.contains('text-error')) {
                content.classList.remove('text-error');
                content.innerHTML = BROKEN_FILE_SVG_ICON;
                content.append(text);
                content.classList.add('icon-error');
            }
        };
    }
}
export function createErrorWidgetView(error, msg) {
    return class InnerErrorWidgetView extends ErrorWidgetView {
        generateErrorMessage() {
            return {
                msg,
                stack: String(error instanceof Error ? error.stack : error),
            };
        }
    };
}
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