behavior: select-dropdown

select-dropdown is what is known as COMBOBOX in Windows.

that have this behavior applied by default (see master style sheet):

• <select>…</select>
• <widget type=“select”></widget>

In h-smile <select> can have any arbitrary markup inside but following elements have special meaning:

• <option>…</option> - option element - item of the list.
• <options>…</options> - container of other option and/or options - node of the tree.
• <optgroup>…</optgroup> - container of options - grouping element.

this behavior knows about:

• size=“N” - number of visible itemsin the list.
• multiple - if defined allows to select more than one item.
• multiple=“checks” - allows to select more than one item and <option>s rnedered with check marks.

Besides of standard set of events (mouse, keyboard, focus) behavior:select generates:

• SELECT_SELECTION_CHANGED event - selection was changed due to user interaction.
• SELECT_STATE_CHANGED event - state of <options> (tree node) was changed: collapsed or expanded. Field target of event structure is a reference to the node element that was changed.

• single selectable lists - value is value of the selected <option> - either content of value attribute or text of the <option>.
• multi-selectable lists - value is an array of values of selected <option>s.

• LEFT - for nodes, collapse current node (options element);
• RIGHT - for nodes, expand current node (options element);
• UP / PAGE-UP - previous item;
• DOWN / PAGE-DOWN- next item;
• SHIFT + UP/PAGE-UP - same as above but with selection;
• SHIFT + UP/PAGE-DOWN - same as above but with selection;
• HOME - first item in the list;
• END - last item in the list;