/var-www-hotglue/hotglue.org-test/dev/module_iframe.inc.php

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<?php

/**
 *      module_iframe.inc.php
 *      Module for embedding iframe elements
 *
 *      Copyright Gottfried Haider, Danja Vasiliev 2010.
 *      This source code is licensed under the GNU General Public License.
 *      See the file COPYING for more details.
 */

@require_once('config.inc.php');
require_once('html.inc.php');
require_once('html_parse.inc.php');
require_once('modules.inc.php');
// module glue gets loaded on demand


// module_image.inc.php has more information on what's going on inside modules 
// (they can be easier than that one though)


function iframe_alter_save($args)
{
        $elem = $args['elem'];
        $obj = &$args['obj'];
        if (!elem_has_class($elem, 'iframe')) {
                return false;
        }
        
        // parse children elements to find iframe
        $childs = html_parse(elem_val($elem));
        $i = false;
        foreach ($childs as $c) {
                if (elem_tag($c) == 'iframe') {
                        $i = $c;
                        break;
                }
        }
        if (!$i) {
                log_msg('warn', 'iframe_alter_save: no iframe element found, inner html is '.var_dump_inl($childs));
                return false;
        }
        
        // url
        if (elem_attr($i, 'src') !== NULL) {
                $obj['iframe-url'] = elem_attr($i, 'src');
        } else {
                unset($obj['iframe-url']);
        }
        // scrolling
        if (elem_css($i, 'overflow') == 'hidden' || (elem_css($i, 'overflow-x') == 'hidden' && elem_css($i, 'overflow-y') == 'hidden')) {
                unset($obj['iframe-scroll']);
        } else {
                $obj['iframe-scroll'] = 'scroll';
        }
        
        return true;
}


function iframe_alter_render_early($args)
{
        $elem = &$args['elem'];
        $obj = $args['obj'];
        if (!elem_has_class($elem, 'iframe')) {
                return false;
        }
        
        // add iframe
        $i = elem('iframe');
        // frameborder is not valid html5
        //if (!$args['edit'] && IE8_COMPAT) {
        //      elem_attr($i, 'frameborder', '0');
        //}
        // set the name attribute
        elem_attr($i, 'name', $obj['name']);
        if (!$args['edit']) {
                // try to lift any restrictions
                elem_attr($i, 'sandbox', 'allow-forms allow-same-origin allow-scripts allow-top-navigation');
        }
        elem_css($i, 'background-color', 'transparent');
        elem_css($i, 'border-width', '0px');
        elem_css($i, 'height', '100%');
        elem_css($i, 'position', 'absolute');
        elem_css($i, 'width', '100%');
        // url
        if (!empty($obj['iframe-url'])) {
                elem_attr($i, 'src', $obj['iframe-url']);
        } else {
                elem_attr($i, 'src', '');
        }
        // scrolling
        if (isset($obj['iframe-scroll']) && $obj['iframe-scroll'] == 'scroll') {
                elem_css($i, 'overflow', 'auto');
                // attribute scrolling is not available in html5 but this effectivly 
                // removes the scrollbars on Chrome, so..
                elem_attr($i, 'scrolling', 'auto');
        } else {
                elem_css($i, 'overflow', 'hidden');
                elem_attr($i, 'scrolling', 'no');
                elem_attr($i, 'seamless', 'seamless');
        }
        elem_append($elem, $i);
        if ($args['edit']) {
                // add shield as well
                $s = elem('div');
                elem_add_class($s, 'glue-iframe-shield');
                elem_add_class($s, 'glue-ui');
                elem_css($s, 'height', '100%');
                elem_css($s, 'position', 'absolute');
                elem_css($s, 'width', '100%');
                elem_attr($s, 'title', 'visitors will be able to interact with the webpage below');
                elem_append($elem, $s);
        }
        
        return true;
}


function iframe_render_object($args)
{
        $obj = $args['obj'];
        if (!isset($obj['type']) || $obj['type'] != 'iframe') {
                return false;
        }
        
        $e = elem('div');
        elem_attr($e, 'id', $obj['name']);
        elem_add_class($e, 'iframe');
        elem_add_class($e, 'resizable');
        elem_add_class($e, 'object');
        
        // hooks
        invoke_hook_first('alter_render_early', 'iframe', array('obj'=>$obj, 'elem'=>&$e, 'edit'=>$args['edit']));
        $html = elem_finalize($e);
        invoke_hook_last('alter_render_late', 'iframe', array('obj'=>$obj, 'html'=>&$html, 'elem'=>$e, 'edit'=>$args['edit']));
        
        return $html;
}


function iframe_render_page_early($args)
{
        if ($args['edit']) {
                if (USE_MIN_FILES) {
                        html_add_js(base_url().'modules/iframe/iframe-edit.min.js');
                } else {
                        html_add_js(base_url().'modules/iframe/iframe-edit.js');
                }
                html_add_css(base_url().'modules/iframe/iframe-edit.css');
        }
}


function iframe_save_state($args)
{
        $elem = $args['elem'];
        $obj = $args['obj'];
        if (array_shift(elem_classes($elem)) != 'iframe') {
                return false;
        }
        
        // make sure the type is set
        $obj['type'] = 'iframe';
        $obj['module'] = 'iframe';
        
        // hook
        invoke_hook('alter_save', array('obj'=>&$obj, 'elem'=>$elem));
        
        load_modules('glue');
        $ret = save_object($obj);
        if ($ret['#error']) {
                log_msg('error', 'iframe_save_state: save_object returned '.quot($ret['#data']));
                return false;
        } else {
                return true;
        }
}

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