system/modules/short_urls/dca/tl_short_urls.php
public function pagePicker(DataContainer $dc)
    {
        return ' <a href="contao/page.php?do=' . Input::get('do') . '&amp;table=' . $dc->table . '&amp;field=' . $dc->field . '&amp;value=' . str_replace(array('{{link_url::', '}}'), '', $dc->value) . '&amp;switch=1' . '" title="' . specialchars($GLOBALS['TL_LANG']['MSC']['pagepicker']) . '" onclick="Backend.getScrollOffset();Backend.openModalSelector({\'width\':768,\'title\':\'' . specialchars(str_replace("'", "\\'", $GLOBALS['TL_LANG']['MOD']['page'][0])) . '\',\'url\':this.href,\'id\':\'' . $dc->field . '\',\'tag\':\'ctrl_'. $dc->field . ((Input::get('act') == 'editAll') ? '_' . $dc->id : '') . '\',\'self\':this});return false">' . Image::getHtml('pickpage.gif', $GLOBALS['TL_LANG']['MSC']['pagepicker'], 'style="vertical-align:top;cursor:pointer"') . '</a>';
    }
public function pagePicker(DataContainer $dc)
    {
        return ' <a href="contao/page.php?do=' . Input::get('do') . '&amp;table=' . $dc->table . '&amp;field=' . $dc->field . '&amp;value=' . str_replace(array('{{link_url::', '}}'), '', $dc->value) . '&amp;switch=1' . '" title="' . specialchars($GLOBALS['TL_LANG']['MSC']['pagepicker']) . '" onclick="Backend.getScrollOffset();Backend.openModalSelector({\'width\':768,\'title\':\'' . specialchars(str_replace("'", "\\'", $GLOBALS['TL_LANG']['MOD']['page'][0])) . '\',\'url\':this.href,\'id\':\'' . $dc->field . '\',\'tag\':\'ctrl_'. $dc->field . ((Input::get('act') == 'editAll') ? '_' . $dc->id : '') . '\',\'self\':this});return false">' . Image::getHtml('pickpage.gif', $GLOBALS['TL_LANG']['MSC']['pagepicker'], 'style="vertical-align:top;cursor:pointer"') . '</a>';
    }
Generate the page picker link

@param DataContainer $dc

@return string