Sven Meier created WICKET-6348:
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Summary: extract #onSelectionChange() from choices to behavior
Key: WICKET-6348
URL: https://issues.apache.org/jira/browse/WICKET-6348
Project: Wicket
Issue Type: Improvement
Components: wicket
Affects Versions: 8.0.0-M4
Reporter: Sven Meier
Assignee: Sven Meier
Priority: Minor
Several choice components support notification via normal HTTP request when
their value changes in the browser:
- DropDownChoice
- RadioChoice
- CheckGroup/Check
- RadioGroup/Radio
I'd propose to move support for this feature into a new behavior.
This has the following advantages:
- having to override #wantOnSelectionChangedNotifications() for
#onSelectionChanged() to be triggered wasn't very intuitive anyway
- we minimize the API of these components
- we can simplify these components by removing from them this non-core concern
(a legacy from the pre-Ajax era)
- to use the feature users can add a behavior instead to have a notification
triggered on *that* behavior (similar to
AjaxFormComponentUpdatingBehavior/AjaxFormChoiceComponentUpdatingBehavior)
I reused IFormSubmitter (for SubmitLink too) so we can now simplify Form:
- no need for the hidden field "_hf_0" (the form's action is changed instead)
- no need for #dispatchEvent()
- #getJsForInterfaceUrl() (now #getJsForListenerUrl()) is greatly simplified
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