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https://issues.apache.org/jira/browse/ISIS-764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dan Haywood updated ISIS-764:
-----------------------------
Description:
In comparison to the drop-down support we have for value types
(ValueChoicesSelect2Panel), with reference types we have two widgets:
ReferencePanel and EntityLinkSelect2Panel. These should be combined into one.
This is a useful prereq to ISIS-785 (support for multi-select).
was:
As an Isis user
I want to pass as an action parameter a collection of entities
In order to avoid repetitive work to the end-user
The idea is to being able to annotate one of the action params with a new
annotation, named @BulkParam, such as in:
public class TodoItem {
...
private TodoItem parentTodoItem;
....
public void addRelatedTodo(@Named("To-Do Item") @BulkParam TodoItem todoItem,
@Named("Comments") String comments) {
....
}
...
}
Where the viewer founds it, instead of asking for one TodoItem, it will allow
the user to select multiple items.
Once done, it will execute the action multiple times, passing each time one of
the TodoItem selected.
If there are other params, the viewer will pass on each action invokation the
same value for all them.
Only one param can be annotated with @BulkParam, for avoiding combinatorial
explosion (10 items selected of one param, 10 items on the other param would
require to be execute 100 times, one for each combination).
The User Interface could be adapted to the choices or autocomplete parameter
facets, for easing the work of the user.
If "choices", there can be alternative displays (see
https://plugins.jquery.com/tag/multiselect/):
1. the viewer can present the user a grid or checkbox (like the one in
http://liveline.github.io/jquery-checkallbox/) with all choices, and the user
can check any of them. Alternative:
http://www.ryancramer.com/journal/entries/select_multiple/
2. multi-select drop-down, like this ones: http://ivaynberg.github.io/select2/,
http://harvesthq.github.io/chosen/,
https://github.com/ehynds/jquery-ui-multiselect-widget,
http://www.droplist.vinmein.com/. They require minimal changes on the current
actions dialog, but does not allow to always view all choices selected (I could
live with it).
If "autocomplete":
1. It could be based on a two panels disposition, left and right, where the
user incrementally searches on an edit box placed over the left panel, similar
to current autocomplete implementation, but placing on the left panel :
http://quasipartikel.at/multiselect_next/
2. Similar approach to the "choices" one, also with this same widget that
admits remote dataset loading and min number of chars entered:
http://ivaynberg.github.io/select2/
As seen, a widget like http://ivaynberg.github.io/select2/ would allow to solve
both situations without requiring much changes on the viewer’s action dialog.
> Combine ReferencePanel and EntityLink2SelectPanel
> -------------------------------------------------
>
> Key: ISIS-764
> URL: https://issues.apache.org/jira/browse/ISIS-764
> Project: Isis
> Issue Type: Improvement
> Components: Core, Viewer: Wicket
> Reporter: Oscar Bou
> Assignee: Dan Haywood
> Fix For: viewer-wicket-1.4.2
>
>
> In comparison to the drop-down support we have for value types
> (ValueChoicesSelect2Panel), with reference types we have two widgets:
> ReferencePanel and EntityLinkSelect2Panel. These should be combined into
> one.
> This is a useful prereq to ISIS-785 (support for multi-select).
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