Howard M. Lewis Ship created TAP5-2371:
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Summary: Prevent interaction with page until fully loaded
Key: TAP5-2371
URL: https://issues.apache.org/jira/browse/TAP5-2371
Project: Tapestry 5
Issue Type: New Feature
Components: tapestry-core
Affects Versions: 5.4
Reporter: Howard M. Lewis Ship
With the emphasis on JavaScript, there is an issue where a user on a slow
connection interacts with the page before the page has fully loaded its
JavaScript and run initializations. This can lead to client-side JavaScript
exceptions, or server-side failures (when ordinary requests are sent to URLs
that expect an Ajax/XHR request).
The right solution is for Tapestry to provide a "pageloading mask", a div that
masks the entire page from user input (and provides a loading image) until page
initializations complete.
The implementaton of this uses a <script> tag, with document.write, to
introduce the mask element at the top of the page (so that
non-JavaScript-enabled clients will be able to interact with the page to some
degree).
CSS animations are used to fade in the mask after a delay. The presentation of
the mask can be modified via CSS overrides. By default, it is black with 50%
opacity.
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