The Portal In-Line Progress Bar, one of FileMaker 15's new performance-based features, brings with it the separation of a layout's non-portal and portal rendering tasks. This means users are no longer forced to wait for cumbersome portals to load before being able to interact with a window's content. It also means developers can now feel more confident in deploying portals once considered off limits due to their long load times.
Watch on Youtube: FileMaker 15 - Portal In-Line Progress Bar
As represented by the new Portal In-Line Progress Bar, FileMaker 15's asynchronous loading of portals means developers can now reconsider utilizing a portal's sort and find functionality because deploying such a portal isn't going to automatically lock users out of a layout while they wait for it to load.
Layout access is impossible until all layout elements are loaded.
Partial layout access is possible once all elements, aside from portals and containers, which now now display the new In-Line Progress Bar, have loaded.
Bear in mind, contextual changes made while a portal is loading, like switching records or modes, will cancel the loading process. Also note that any loading portals are "off limits" when it comes to active object tabbing (a loading portal will be skipped & the next active object will be entered) and scripts & triggers (a script will be blocked until the portal is loaded and available).
All in all, while the Portal In-Line Progress Bar may appear to be a minor change, it actually brings with it some great benefits and potential for both users and developers alike.
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