Advanced MVVM by Josh Smith

By Josh Smith

This ebook is for WPF and Silverlight builders trying to take their Model-View-ViewModel talents to the following point. It reports how the MVVM layout trend was once used to create a enjoyable and addictive online game that gives a chic person adventure. learn this ebook to achieve insights from Josh Smith, an well-known professional in WPF, Silverlight, and MVVM, on the best way to safely layout advanced View and ViewModel architectures. how you can help limitless undo, coordinate lively transitions, regulate modal conversation packing containers from a ViewModel, and masses extra.

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I would also like to thank all of the musicians I listened to who performed the music with such passion and elegance. com ], the BubbleBurst game would not be nearly as attractive and usable as it is. I also appreciate the visual design input that my friend Grant Hinkson gave me, which helped me add an extra bit of polish to the UI. I take full responsibility for any blemishes in the BubbleBurst user interface. Another person who deserves credit is Andrew Whiddett, CTO of IdentityMine. He gave me an insightful code review and suggested some brilliant ideas for improving the architecture.

ViewModel objects should not trust that Views will behave properly. ViewModels must take precautions against poorly written Views. Exceptions should be thrown when Views invoke ViewModel methods at the wrong time, or with invalid arguments. Collections of data should be exposed as read-only collections, such as ReadOnlyObservableCollection, whenever possible. What we have not yet seen is how the Storyboards that move BubbleViews are created. That is the responsibility of BubblesTaskStoryboardFactory.

Since it is a child element of BubbleBurstView, it must be collapsed while the user is playing a game. Once the game comes to an end, the GameOverView’s Visibility property is set to Visible. ContextMenu> Notice that the GameOverView is declared after/below the BubbleMatrixView. This ensures that it will render on top of the BubbleMatrixView, with respect to Z-order. Now let’s take a closer look at how the visibility of GameOverView is controlled.

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