HOWTO: Adding your own ListView action items - Part 1

gistfile1.php

<?php

require_once('include/MVC/View/views/view.list.php');

class CustomAccountsViewList extends ViewList
{
    /**
     * @see ViewList::preDisplay()
     */
    public function preDisplay()
    {
        parent::preDisplay();

        $this->lv->actionsMenuExtraItems[] = $this->buildMyMenuItem();
    }

    /**
     * @return string HTML
     */
    protected function buildMyMenuItem()
    {
        global $app_strings;
    
        return <<<EOHTML
<a class="menuItem" style="width: 150px;" href="#" onmouseover='hiliteItem(this,"yes");' 
        onmouseout='unhiliteItem(this);' 
        onclick="sugarListView.get_checks();
        if(sugarListView.get_checks_count() &lt; 1) {
            alert('{$app_strings['LBL_LISTVIEW_NO_SELECTED']}');
            return false;
        }
        document.MassUpdate.action.value='displaypassedids';
        document.MassUpdate.submit();">Send records to a new view!</a>
EOHTML;
    }
}

From https://web.archive.org/web/20150727073955/http://developer.sugarcrm.com/2010/11/22/howto-adding-your-own-listview-action-items/

To be saved as
custom/modules/Accounts/views/view.list.php