sendMessageToParentWindow()

in lex-web-ui/src/store/actions.js [1077:1117]

• 41 lines of code
• 7 McCabe index (conditional complexity)

  sendMessageToParentWindow(context, message) {
    if (!context.state.isRunningEmbedded) {
      return new Promise((resolve, reject) => {
        try {
          const myEvent = new CustomEvent('fullpagecomponent', { detail: message });
          document.dispatchEvent(myEvent);
          resolve(myEvent);
        } catch (err) {
          reject(err);
        }
      });
    }
    return new Promise((resolve, reject) => {
      const messageChannel = new MessageChannel();
      messageChannel.port1.onmessage = (evt) => {
        messageChannel.port1.close();
        messageChannel.port2.close();
        if (evt.data.event === 'resolve') {
          resolve(evt.data);
        } else {
          const errorMessage =
            `error in sendMessageToParentWindow: ${evt.data.error}`;
          reject(new Error(errorMessage));
        }
      };
      let target = context.state.config.ui.parentOrigin;
      if (target !== window.location.origin) {
        // simple check to determine if a region specific path has been provided
        const p1 = context.state.config.ui.parentOrigin.split('.');
        const p2 = window.location.origin.split('.');
        if (p1[0] === p2[0]) {
          target = window.location.origin;
        }
      }
      window.parent.postMessage(
        { source: 'lex-web-ui', ...message },
        target,
        [messageChannel.port2],
      );
    });
  },