get method

ResourceContent? get(Object? resource)

Returns a ResourceContent using resource as key.

If the cache already have a resolved ResourceContent will prioritize it and return it.

resource can be of type Resource, ResourceContent, Uri or Uri string.

Implementation

ResourceContent? get(Object? resource) {
  if (resource == null) return null;

  var resourceContent = ResourceContent.from(resource)!;

  var cacheKey = _cacheKey(resourceContent);
  if (cacheKey == null) return resourceContent;

  var cached = _resources[cacheKey];
  if (cached != null) {
    if (identical(cached, resourceContent)) return resourceContent;

    if (resourceContent.hasContent && !cached.hasContent) {
      var content = resourceContent._content;

      cached._content = content;
      cached.onLoad.add(content);
    }

    return cached;
  }

  _resources[cacheKey] = resourceContent;

  return resourceContent;
}