Function clickMenuCallback

chrome-extension/src/service_worker.js:32–46

* What action to take when someone clicks the right-click menu option. * Here it takes the url of the right-clicked image and the current tabId, and * send them to the content script where the ImageData will be retrieved and * sent back here. After that, imageClassifier's analyzeImage method.

(info, tab)

 * sent back here. After that, imageClassifier's analyzeImage method.
 */
function clickMenuCallback(info, tab) {
  const message = { action: 'IMAGE_CLICKED', url: info.srcUrl };
  chrome.tabs.sendMessage(tab.id, message, (resp) => {
    if (!resp.rawImageData) {
      console.error(
        'Failed to get image data. ' +
        'The image might be too small or failed to load. ' +
        'See console logs for errors.');
      return;
    }
    const imageData = new ImageData(
      Uint8ClampedArray.from(resp.rawImageData), resp.width, resp.height);
    imageClassifier.analyzeImage(imageData, info.srcUrl, tab.id);
  });
}

/**
 * Adds a right-click menu option to trigger classifying the image.