6/17/2023 0 Comments Iframe onloadorigin-when-cross-origin: The referrer sent to other origins will be limited to the scheme, the host, and the port.origin: The sent referrer will be limited to the origin of the referring page: its scheme, host, and port.no-referrer-when-downgrade: The Referer header will not be sent to origins without TLS ( HTTPS).no-referrer: The Referer header will not be sent.Indicates which referrer to send when fetching the frame's resource: This can be used in the target attribute of the, , or elements the formtarget attribute of the or elements or the windowName parameter in the window.open() method. lazy: Defer loading of the iframe until it reaches a calculated distance from the viewport, as defined by the browser.Ī targetable name for the embedded browsing context.eager: Load the iframe immediately, regardless if it is outside the visible viewport (this is the default value).Indicates how the browser should load the iframe: csp ExperimentalĪ Content Security Policy enforced for the embedded resource. See IFrame credentialless for more details. In return, the Cross-Origin-Embedder-Policy (COEP) embedding rules can be lifted, so documents with COEP set can embed third-party documents that do not. It uses a new context local to the top-level document lifetime. It doesn't have access to the network, cookies, and storage data associated with its origin. Set to true to make the credentialless, meaning that its content will be loaded in a new, ephemeral context. Note: This attribute is considered a legacy attribute and redefined as allow="payment". Allowing cross-origin use of images and canvas.HTML table advanced features and accessibility.From object to iframe - other embedding technologies.Assessment: Structuring a page of content.the images in the page are loaded or not, it might not be enough as images are loaded async as well. This approach works well with RWA pages with lists to understand if e.g. This is how the app understands that the content of the iframe is fully loaded and ready for the subsequent work. In the other screen with the iframe, after I assign the URL of the page-to-be-printed to the src of the iframe, I check if the same message ('iframe-loaded') is received or not if received, I send the content of the iframe to print dialog: This is to understand if loading of the page is finished so there is a counterpart "window.onmessage" in the other screen where this page-to-be-printed is loaded into an iframe, to catch this message. I check whether the last item of the list is loaded or not, with the following container:Īnd in the ComponentDidMount handler, I post a message like this: In my case, the RWA page that needs to be fully loaded consists only of a list with many items. So I resorted on the "componentDidMount" JS event approach. This approach doesn't work good with RWA pages as they work with async calls (and the real "render finish" of it is not detectable by the iframe.onload event). When the page is fully loaded (by checking with the JS onload function as suggested above), I would transfer the content of the iframe to the print dialog. Normally, I would render the page to be printed in a hidden iframe (that is located in the screen where the print dialog will be opened). My scenario is actually that I need to send the content of a RWA page to the print dialog. For future reference, I would like to share what I did to solve this issue.
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