Adding ressorts for multi-selection of entries

We use combo-boxes for editing the ressorts and subressorts.

States

By using stateChanged, the combo-box offers two states:

The combo-box shows the ressort (resp. subressort) when all the entries in selection have same ressort (resp. subressort) value.
If one or more entries have different ressort (resp. subressort) values then "<various values>" is displayed.

Note that if the ressorts of the selected entries are not equal, the subressorts are reset.

Example Configuration

CODE

{{#form-container legacyController=legacyController 
				  $changePerfect=false 
				  $changeReady=false 
				  $changeNoDelete=false 
				  $changeInvalid=false
				  $changeDeleteDate=false
				  $changeBroadcastDate=false
				  $changeRessort=false
				  $changeSubressort=false
				  $changeAuthor=false
				  $changeEditor=false as |form|}}

	{{#if editable}} 
		<table class="modern-table"> 
			<tbody>
                <tr><td>{{check-box checked=$changeRessort}}<label>Change Ressort:</label></td><td class="editable-field">
                    {{combo-box
                        stateChanged=$changeRessort
                        model=editModelArray
                        field="ressortObject"
                        options=legacyController.selectedTable.ressortsCache
                        optionIdPath="RessortNr"
                        optionLabelPath="Name"
                        mode="select"
                        ariaLabel="Select Ressort"
                    }}
                </td></tr>
                <tr><td>{{check-box checked=$changeSubressort}}<label>Change Subressort:</label></td><td class="editable-field">
                    {{combo-box 
                        stateChanged=$changeSubressort
                        model=editModelArray
                        field="subRessortObject"
                        options=editModel.ressortObject.Children
                        optionIdPath="RessortNr"
                        optionLabelPath="Name"
                        mode="select"
                        ariaLabel="Select Subressort"
                    }}
                </td></tr>
			</tbody>
		</table>
	{{else}}
		<table class="modern-table">
			<tbody>
				<tr><td>Ressort:</td><td>{{bulk-text-box model=model field="Ressort" readonly=true}}</td></tr>
				<tr><td>Subressort:</td><td>{{bulk-text-box model=model field="SubRessort" readonly=true}}</td></tr>
			</tbody>
		</table>
	{{/if}}
{{/form-container}}