batch-processing checkbox in custom components

There's no component for that, you would need to rebuild the logic to check if batchprocessing is enabled or not (rest 

/users/id/${user.id}/settings/name/layout.show_batch_checkboxes) and recreate the <input> checkbox element with the correct value (board relative message id and board id, url encoded) and class.

Thank you for your help

here is my implementation to help someone else

step 1 : create a macro to get the state of the checkbox

<#macro batchProcessingCheckbox userId>
<#assign isCheckBoxActivated = rest("/users/id/${userId}/settings/name/layout.show_batch_checkboxes").value />
</#macro>

Step 2 : create a macro to display the checkbox

<#macro batchProcessingCheckboxUI relativeMessageId boardId isCheckBoxActivated>
<input name="bm" type="checkbox" value="${relativeMessageId}%3A${boardId}" title="Sélectionner " class="BatchProcessing <#if !isCheckBoxActivated?boolean>hide</#if> ">
</#macro>

Step 3 : in custom component, just include différent calls

<@batchProcessingCheckbox userId=user.id />

 in the #list topics as topic bloc of code, include the ui

<@batchProcessingCheckboxUI relativeMessageId=messageRelativeId boardId=message.board.id isCheckBoxActivated=isCheckBoxActivated />

Finally add a little js script at the end of your component to show/hide checkbox on click on the menu

<@liaAddScript>
;(function($){
	$('.hide-batch-checkboxes-link').click(function() {
		$('.BatchProcessing').addClass('hide');
	});
	$('.show-batch-checkboxes-link').click(function() {
		$('.BatchProcessing').removeClass("hide");
	});
})(LITHIUM.jQuery);
</@liaAddScript>