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Goals
Magnolia has to show messages related to specific attributes of items in lists, trees and grids. An example of this is the inline editing in trees, which allows me a user to change e.g. the page name without having to open the page properties edit dialog first.
For errors, I the user usually have has to fix the error in order to successfully complete an ongoing operation to complete. Alternatively, I he may choose to not fix the problem and cancel the operation entirely. If I he decides to cancel the operation, all previously stored values are restored, if they exist.
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Concept
Validation messages inform of a problem caused by an input operation of the user.
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