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com.vaadin.flow.data.selection.
Class MultiSelectionEvent<C extends Component,T>
- java.lang.Object
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- java.util.EventObject
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- com.vaadin.flow.component.ComponentEvent<C>
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- com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<C,Set<T>>
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- com.vaadin.flow.data.selection.MultiSelectionEvent<C,T>
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Type Parameters:
C- the selection component typeT- the type of the selected itemAll Implemented Interfaces:
HasValue.ValueChangeEvent<Set<T>>, SelectionEvent<C,T>, Serializable
public class MultiSelectionEvent<C extends Component,T> extends AbstractField.ComponentValueChangeEvent<C,Set<T>> implements SelectionEvent<C,T>Fired when the selection changes in a listing component that supports multiple item selection.
Since:
1.0.
Author:
Vaadin Ltd
See Also:
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Field Summary
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Fields inherited from class java.util.EventObject
source
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Constructor Summary
Constructors Constructor and Description MultiSelectionEvent(C listing, HasValue<AbstractField.ComponentValueChangeEvent<C,Set<T>>,Set<T>> source, Set<T> oldSelection, boolean userOriginated)Creates a new multi selection change event in a component.
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Method Summary
All Methods Modifier and Type Method and Description Set<T>getAddedSelection()Gets the items that were added to selection.
Set<T>getAllSelectedItems()Gets all the currently selected items.
Optional<T>getFirstSelectedItem()Get first selected data item.
Set<T>getNewSelection()Gets the new selection.
Set<T>getOldSelection()Gets the old selection.
Set<T>getRemovedSelection()Gets the items that were removed from selection.
Set<T>getValue()Gets the current selection.
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Methods inherited from class com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent
getHasValue, getOldValue, toString
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Methods inherited from class com.vaadin.flow.component.ComponentEvent
getSource, isFromClient, unregisterListener
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.vaadin.flow.data.selection.SelectionEvent
getSource, isFromClient
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Methods inherited from interface com.vaadin.flow.component.HasValue.ValueChangeEvent
isFromClient
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Constructor Detail
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MultiSelectionEvent
public MultiSelectionEvent(C listing, HasValue<AbstractField.ComponentValueChangeEvent<C,Set<T>>,Set<T>> source, Set<T> oldSelection, boolean userOriginated)Creates a new multi selection change event in a component.
Parameters:
listing- the listing component where the event originatedsource- the single select sourceoldSelection- the item that was previously selecteduserOriginated-trueif this event originates from the client,falseotherwise.
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Method Detail
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getFirstSelectedItem
public Optional<T> getFirstSelectedItem()Description copied from interface:
SelectionEventGet first selected data item.
This is the same as
SingleSelectionEvent.getSelectedItem()in case of single selection.Specified by:
getFirstSelectedItemin interfaceSelectionEvent<C extends Component,T>Returns:
the first selected item.
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getAllSelectedItems
public Set<T> getAllSelectedItems()Description copied from interface:
SelectionEventGets all the currently selected items.
This method applies more to multiselection - for single select it returns either an empty set or a set containing the only selected item.
Specified by:
getAllSelectedItemsin interfaceSelectionEvent<C extends Component,T>Returns:
return all the selected items, if any, never
null
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getValue
public Set<T> getValue()Gets the current selection.
Specified by:
getValuein interfaceHasValue.ValueChangeEvent<Set<T>>Overrides:
getValuein classAbstractField.ComponentValueChangeEvent<C extends Component,Set<T>>Returns:
an unmodifiable set of items selected after the selection was changed
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getNewSelection
public Set<T> getNewSelection()Gets the new selection.
The result is the current selection of the source listing. So it's always exactly the same as
getValue().Returns:
an unmodifiable set of items selected after the selection was changed
See Also:
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getOldSelection
public Set<T> getOldSelection()Gets the old selection.
Returns:
an unmodifiable set of items selected before the selection was changed
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getRemovedSelection
public Set<T> getRemovedSelection()Gets the items that were removed from selection.
This is just a convenience method for checking what was previously selected in
getOldSelection()but not selected anymore ingetNewSelection().Returns:
the items that were removed from selection
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getAddedSelection
public Set<T> getAddedSelection()Gets the items that were added to selection.
This is just a convenience method for checking what is new selected in
getNewSelection()and wasn't selected ingetOldSelection().Returns:
the items that were removed from selection
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