On Wednesday, November 4, 2015 at 10:15:07 AM UTC-8, Matthew Lauber wrote: > > I'd like to have a select widget that uses the multiple property of the > base html select widget, and when selected, updates a list field with all > the selected values. Is this something someone has seen/done before, or am > I in new territory? >
The $select widget doesn't currently support the "multiple" property. To make it capable of handling multiple values, there are two functions in $:/core/modules/widgets/select.js that need to be extended: * SelectWidget.prototype.handleChangeEvent() currently just assigns the DOM element's .value attribute (the "current selection") to the target tiddler field/index. To support multi-select, this function needs to iterate over all the items in the DOM element's .options array and concatenate all the selected items into a single space-separated, bracketed list that it can then write into the target tiddler field/index. * SelectWidget.prototype.setSelectValue() currently just takes the stored value from the tiddler field/index, and sets it into the DOM element's .value attribute. To support multi-select, this function needs to split a space-separated, bracketed value stored in the tiddler field/index into separate items that can then be individually selected in the DOM element. Both of these enhancements would only be triggered when the "multiple" attribute is used in the <$select> widget, so that the widget behavior would be unchanged for all current uses, so this would be a 100% backward-compatible improvement to the core functionality. -e -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/7b547f2e-3276-40fd-8f72-77c0d42508c2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
