clipboard_helper.php
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	<?php

	class kClipboardHelper extends kHelper {

	/**
	* Set's clipboard mode
	*
	* @param kEvent $event
	* @param string $mode
	*/
	function setClipboard(&$event, $mode, $ids)
	{
	// clipboard = { prefix1 = { cut = {idsA}, copy = {idsB} }, ... prefixN = { cut = {idsC}, copy = {idsD} } }
	$object = $event->getObject();

	$clipboard = $this->Application->RecallVar('clipboard');
	$clipboard = $clipboard ? unserialize($clipboard) : Array();

	$prefix = $event->getPrefixSpecial();

	// 1. add $ids to mode key for prefix (make sure the unique)
	$this_mode_ids =& $clipboard[$prefix][$mode];
	if (!is_array($this_mode_ids)) {
	$this_mode_ids = $ids;
	}
	else {
	$this_mode_ids = array_unique( array_merge($this_mode_ids, $ids) );
	}

	// 2. remove that ids from all other modes
	$other_mode_ids =& $clipboard[$prefix][$mode == 'cut' ? 'copy' : 'cut'];
	if (!is_array($other_mode_ids)) {
	$other_mode_ids = Array();
	}
	else {
	$other_mode_ids = array_diff($other_mode_ids, $this_mode_ids);
	}

	$this->Application->StoreVar('clipboard', serialize($clipboard));

	/*// do not go up - STAY
	$event->SetRedirectParam('opener', 's');
	$event->SetRedirectParam('pass_events', true);*/
	}
	}


	?>