Demo class widget

This sample demonstrates how to create a widget using a class component.

How to use the sample

Clone the sample repo and copy this widget's folder (within widgets) to the client/your-extensions/widgets folder of your Experience Builder installation.

How it works

This example creates a simple class widget to highlight some of the props you can use from a theme to return a widgets props. It also demonstrates how to style a button and component. The widget extends the React.PureComponent class with the types AllWidgetProps and IMConfig. The AllWidgetProps uses props of the widget and props injected by the jimu framework. The IMConfig is used to work with the config.ts.

The render method is used to call what the widget needs to display. For example, StyledButton uses the color variable from the Theme variables to style a button. StyledBSButton uses the button component from the Experience Builder framework. propsTr will return the props of the widget.

  render(){
    const StyledButton = styled.button`
      color: white;
      background-color: ${this.props.theme.colors.primary};
      transition: 0.15s ease-in all;
      &:hover {
        background-color: ${this.props.theme.colors.danger};
      }
    `;

    const StyledBSButton = styled(Button)`
      background-color: hotpink !important;
      border: 0 !important;
      transition: 0.15s ease-in all;
      &:hover {
        background-color: purple !important;
      }
    `;
 
    const propsTr = Object.keys(this.props).map((prop, i) => {
      if(['manifest', 'user', 'intl'].indexOf(prop) > -1
        || typeof this.props[prop] === 'string'){
        return <tr key={i}><td>{prop}</td><td>{this.props[prop] && this.props[prop].toString()}</td></tr>;
      }

      return <tr key={i}>
        <td>{prop}</td>
        <td>
          {
            JSON.stringify(this.props[prop], null, 2)
          }
        </td></tr>;
    });

The return statement is in the render method and is the output. Additionally, this shows how to use Theme variables within the markup and making use of a jimuCoreDefaultMessage and an example of formatting a default message as a FormattedMessage.

    return <div className="widget-demo jimu-widget" style={{ overflow: 'auto' }}>
      <Tabs>
        <Tab id="widgetProperties" title={this.nls('widgetProperties')} defaultActive={true}>
          <div className="title font-weight-bold">NLS messages from jimu-core (OK)</div>
          <div className="content"><FormattedMessage id="ok" defaultMessage={jimuCoreDefaultMessage.ok}></FormattedMessage></div>
          <hr />
          {/* demo how to use theme variables */}
          <div css={styleLiteral}><span css={styleObject}>Theme danger color</span></div>
          <br />

          <StyledButton>A styled HTML Button</StyledButton>
          <br />
          <br />

          <StyledBSButton>A Re-styled Button Component</StyledBSButton>
          <br />
          <br />

          <div css={rtlStyle}>right to left demo</div>
          <br />
          <br />

          <style>
            {styleTag}
          </style>
          <p className="danger-color">
            Text color is from a named CSS class
          </p>
          {/* demo how to format string by call API */}
          <div className="title font-weight-bold"><FormattedMessage id="widgetName" defaultMessage={defaultMessages.widgetName} /></div>
          <div className="content">{this.props.intl.formatMessage({ id: '_widgetLabel', defaultMessage: defaultMessages._widgetLabel })}</div>

          <div className="title font-weight-bold"><FormattedMessage id="widgetProps" defaultMessage={defaultMessages.widgetProps} /></div>
          <div className="content">
            <table>
              <tbody>{propsTr}</tbody>
            </table>
          </div>
        </Tab>
        <Tab id="widgetFunctions" title={this.nls('widgetFunctions')}>
          <p>TODO</p>
        </Tab>
      </Tabs>
    </div>;
  }
}

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