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object --+ | IContainer --+ | IFilterable
Interface that is implemented by containers which allow reducing their visible contents based on a set of filters.
When a set of filters are set, only items that match all the filters are included in the visible contents of the container. Still new items that do not match filters can be added to the container. Multiple filters can be added and the container remembers the state of the filters. When multiple filters are added, all filters must match for an item to be visible in the container.
When an IOrdered or IIndexed container is filtered, all operations of these
interfaces should only use the filtered and sorted contents and the
filtered indices to the container. Indices or item identifiers in the
public API refer to the visible view unless otherwise stated. However,
the addItem*()
methods may add items that will be filtered
out after addition or moved to another position based on sorting.
How filtering is performed when a IHierarchical container implements IFilterable is implementation specific and should be documented in the implementing class.
Adding items (if supported) to a filtered IOrdered or IIndexed container should insert them immediately after the indicated visible item. However, the unfiltered position of items added at index 0, at index IContainer.size or at an undefined position is up to the implementation.
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Inherited from Inherited from |
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Inherited from |
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Adds a filter for the container. If a container has multiple filters, only items accepted by all filters are visible.
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Removes a filter from the container. This requires that the |
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