public static function get_title() {

return get_string('title', 'blocktype.groupviewsimage');

}

public static function get_description() {

return get_string('description', 'blocktype.groupviewsimage');

}

public static function single_only() {

return false;

}

public static function get_categories() {

return array('general');

}

public static function get_viewtypes() {

return array('grouphomepage');

}

public static function hide_title_on_empty_content() {

return true;

}

public static function has_instance_config() {

return true;

}

public static function get_instance_title() {

return get_string('title', 'blocktype.groupviewsimage');

}

public static function instance_config_form($instance) {

$configdata = $instance->get('configdata');

return array(

'showsharedviews' => array(

'type' => 'radio',

'title' => get_string('displaysharedviews', 'blocktype.groupviewsimage'),

'description' => get_string('displaysharedviewsdesc', 'blocktype.groupviewsimage'),

'options' => array(

1 => get_string('yes'),

0 => get_string('no'),

),

'separator' => '<br>',

'defaultvalue' => isset($configdata['showsharedviews']) ? $configdata['showsharedviews'] : 1,

),

);

}

public static function default_copy_type() {

return 'shallow';

}

public static function render_instance(BlockInstance $instance, $editing=false) {

//Default limit and offset. This was copied from Mike Kelly's code

$offset = 0;

$limit = 10;

$groupid = $instance->get_view()->get('group');

if (!$groupid) {

return '';

}

//returns an array of all views for a group id. This uses the groupviews method that was copied acrossed

$items = self::get_data($groupid, $offset, $limit);

//calls Mike Kelly's method to build the objects to be displayed

self::build_browse_list_html($items);

if(empty($items) || !isset($items)){

//20150723 JW changed the return message so if there are no pages to display it says that rather you don't have access

return "No pages to display";

}

//Not sure what this does

$js = <<< EOF

addLoadEvent(function () {

{$items['pagination_js']}

});

EOF;

//neededJS and neededCSS are files required to render the page properly. They are done this way so it is easier to read

$neededJS = array(

get_config('wwwroot').'blocktype/groupviewsimage/js/chosen.jquery.js',

get_config('wwwroot').'blocktype/groupviewsimage/js/browse.js'

);

$neededCSS = array(

get_config('wwwroot')."blocktype/groupviewsimage/js/jquery-ui/css/custom-theme/jquery-ui-1.8.20.custom.css",

get_config('wwwroot')."blocktype/groupviewsimage/theme/raw/static/style/chosen.css",

get_config('wwwroot')."blocktype/groupviewsimage/theme/raw/static/style/style.css"

);

//calls smarty and feeds the data to be render via the tpl file

$dwoo = smarty_core();

//adds the javascript and css files into the template to be rendered

$dwoo->assign('JAVASCRIPT', $neededJS);

$dwoo->assign('STYLESHEETLIST', $neededCSS);

$dwoo->assign('INLINEJAVASCRIPT', $js); //????

//20150723 JW added extra entry to check if jquery is loaded, if not then load the below jquery

$dwoo->assign('JQUERYPATH', get_config('wwwroot').'blocktype/groupviewsimage/js/jquery-ui/js/jquery-ui-1.8.19.custom.min.js');

//adds the items into the templated to be rendered

$dwoo->assign_by_ref('items', $items);

//returns the template as text so mahara can render the block

return $dwoo->fetch('blocktype:groupviewsimage:index.tpl');

}

/** Code copied from blocktype::groupviews **/

public static function get_data($groupid, $offset=0, $limit=20) {

global $USER;

$texttitletrim = 20;

$items2 = null;

if(!defined('GROUP')) {

define('GROUP', $groupid);

}

// get the currently requested group

$group = group_current_group();

$role = group_user_access($group->id);

if ($role) {

// For group members, display a list of views that others have shared to the group

// Params for get_sharedviews_data is $limit=0,$offset=0, $groupid

$data['sharedviews'] = View::get_sharedviews_data($limit, $offset, $group->id);

/*

foreach ($data['sharedviews']->data as &$view) {

if (isset($view['template']) && $view['template']) {

$view['form'] = pieform(create_view_form($group, null, $view->id));

}

}

*/

//the array that is returned from View::get_sharedviews_data($limit, $offset, $group->id)

//contains a few other things but we just wanted to focus on sharedviews

//the foreach below will loop through all views shared with the group

foreach($data['sharedviews'] as $aView){

if(is_array($aView)){

//20140909 JW sort the array returned by View::get_sharedviews_data($limit, $offset, $group->id)

//by ctime, this requires the query within get_sharedviews_data to have ctime in its select string

$aView = self::array_msort($aView, array('ctime'=>SORT_DESC));

//the foreach below will loop through all the properties for a view (returned by get_data method) and assigns them to the required variables

foreach($aView as $aViewProperty){

//get the view

$viewID = $aViewProperty['id']; //the page shared

$fullurl = $aViewProperty['fullurl']; //full url of the page shared

$viewTitle = str_shorten_text($aViewProperty['displaytitle'], $texttitletrim, true); //view's title

//get the owner of the view

$viewOwnerName = $aViewProperty['user']->firstname." ".$aViewProperty['user']->lastname; //owner of the view's name

$userobj = new User();

$userobj->find_by_id($aViewProperty['user']->id);

$profileurl = profile_url($userobj); //owner of the view's proflie page

$avatarurl = profile_icon_url($aViewProperty['user']->id,50,50); //owner of the view's profile picture

//get the artefact id of an image in the view

$theView = new View($aViewProperty['id']); //create the view

$artefactInView = $theView->get_artefact_instances(); //get all artefacts in the view 20170224 JW v16.10.2 uses get_artefact_instances()

foreach($artefactInView as $anArtefact){ //for each artefact

//20170224 JW v16.10.2 uses get_artefact_instances() which means all fields need to use the get('field_name') to get value

if($anArtefact->get('artefacttype') == 'image'){

$artefactID = $anArtefact->get('id'); //if it is an image artefact assign the id and break the loop

break;

}

//20150331 JW added that if page contains a folder with images (galleries count as folders)

//it will pull an image from that folder and use it as the cover

if($anArtefact->get('artefacttype') == 'folder'){

$query = "SELECT id FROM {artefact} where parent = ? AND artefacttype = 'image'";

$imagesInAFolder = get_records_sql_array($query,array($anArtefact->get('id')));

//only assign the id of an image if the folder contains at least 1 image

if(!empty($imagesInAFolder)){

$artefactID = $imagesInAFolder[0]->id;

break;

}

}

//20140903 JW if there are no images on the page then set to artefactID to 0

//this way, when display each page, instead of a blank box it will show a place holder image

$artefactID = 0;

}

//the items variable below requires the contents array to be in this format

$contents['photos'][] = array(

"image" => array (

"id" => $artefactID,

"view" => $viewID

),

"type" => "photo",

"page" => array(

"url" => $fullurl,

"title" => $viewTitle

),

"owner" => array(

"name" => $viewOwnerName,

"profileurl" => $profileurl,

"avatarurl" => $avatarurl

)

);

}

}

}

//20150723 JW added the if statement to check if $content is set, if not then skip

if(isset($contents)){

$items2 = array(

'count' => $data['sharedviews']->count,

'data' => $contents,

'offset' => $offset,

'limit' => $limit,

);

}

}

//$data['group'] = $group;

return $items2;

}

/** End of code copied from blocktype::groupviews **/

/**

* 20140909 JW

* array_msort copied from http://php.net/manual/en/function.array-multisort.php

* This is used to sort array returned by View::get_sharedviews_data($limit, $offset, $group->id)

*/

private static function array_msort($array, $cols){

$colarr = array();

foreach ($cols as $col => $order) {

$colarr[$col] = array();

foreach ($array as $k => $row) { $colarr[$col]['_'.$k] = strtolower($row[$col]); }

}

$eval = 'array_multisort(';

foreach ($cols as $col => $order) {

$eval .= '$colarr[\''.$col.'\'],'.$order.',';

}

$eval = substr($eval,0,-1).');';

eval($eval);

$ret = array();

foreach ($colarr as $col => $arr) {

foreach ($arr as $k => $v) {

$k = substr($k,1);

if (!isset($ret[$k])) $ret[$k] = $array[$k];

$ret[$k][$col] = $array[$k][$col];

}

}

return $ret;

}

/**

* Start of Mike Kelly's code

*/

public static function build_browse_list_html(&$items) {

//20140627 JW added if set so it does not display anything if the user is not a group member

if(isset($items)){

$smarty = smarty_core();

$smarty->assign_by_ref('items', $items);

$smarty->assign('wwwroot', get_config('wwwroot'));

$items['tablerows'] = $smarty->fetch('blocktype:groupviewsimage:browselist.tpl'); // the 'tablerows' naming is required for pagination script

$pagination = self::build_browse_pagination(array(

'id' => 'browselist_pagination',

'url' => get_config('wwwroot') . 'blocktype/groupviewsimage/lib.php',

'jsonscript' => 'blocktype/groupviewsimage/browse.json.php',

'datatable' => 'browselist', // the pagination script expects a table with this id

'count' => $items['count'],

'limit' => $items['limit'],

'offset' => $items['offset'],

'firsttext' => '',

'previoustext' => '',

'nexttext' => '',

'lasttext' => '',

'numbersincludefirstlast' => false,

'resultcounttextsingular' => 'Item', //get_string('plan', 'artefact.plans'),

'resultcounttextplural' => 'Items', //get_string('plans', 'artefact.plans'),

));

$items['pagination'] = $pagination['html'];

$items['pagination_js'] = $pagination['javascript'];

}

}

/**

* Builds pagination links for HTML display.

*

* @param array $params Options for the pagination

*/

function build_browse_pagination($params) {

// Bail if the required attributes are not present

$required = array('url', 'count', 'limit', 'offset');

foreach ($required as $option) {

if (!isset($params[$option])) {

throw new ParameterException('You must supply option "' . $option . '" to build_pagination');

}

}

// Work out default values for parameters

if (!isset($params['id'])) {

$params['id'] = substr(md5(microtime()), 0, 4);

}

$params['offsetname'] = (isset($params['offsetname'])) ? $params['offsetname'] : 'offset';

if (isset($params['forceoffset']) && !is_null($params['forceoffset'])) {

$params['offset'] = (int) $params['forceoffset'];

}

else if (!isset($params['offset'])) {

$params['offset'] = param_integer($params['offsetname'], 0);

}

// Correct for odd offsets

$params['offset'] -= $params['offset'] % $params['limit'];

$params['firsttext'] = (isset($params['firsttext'])) ? $params['firsttext'] : get_string('first');

$params['previoustext'] = (isset($params['previoustext'])) ? $params['previoustext'] : get_string('previous');

$params['nexttext'] = (isset($params['nexttext'])) ? $params['nexttext'] : get_string('next');

$params['resultcounttextsingular'] = (isset($params['resultcounttextsingular'])) ? $params['resultcounttextsingular'] : get_string('result');

$params['resultcounttextplural'] = (isset($params['resultcounttextplural'])) ? $params['resultcounttextplural'] : get_string('results');

if (!isset($params['numbersincludefirstlast'])) {

$params['numbersincludefirstlast'] = true;

}

if (!isset($params['numbersincludeprevnext'])) {

$params['numbersincludeprevnext'] = true;

}

if (!isset($params['extradata'])) {

$params['extradata'] = null;

}

// Begin building the output

$output = '<div id="' . $params['id'] . '" class="pagination';

if (isset($params['class'])) {

$output .= ' ' . hsc($params['class']);

}

$output .= '">';

//20140630 JW removed <= and added <

if ($params['limit'] < $params['count']) {

$pages = ceil($params['count'] / $params['limit']);

$page = $params['offset'] / $params['limit'];

$last = $pages - 1;

if (!empty($params['lastpage'])) {

$page = $last;

}

$next = min($last, $page + 1);

$prev = max(0, $page - 1);

// Build a list of what pagenumbers will be put between the previous/next links

$pagenumbers = array();

if ($params['numbersincludefirstlast']) {

$pagenumbers[] = 0;

}

if ($params['numbersincludeprevnext']) {

$pagenumbers[] = $prev;

}

$pagenumbers[] = $page;

if ($params['numbersincludeprevnext']) {

$pagenumbers[] = $next;

}

if ($params['numbersincludefirstlast']) {

$pagenumbers[] = $last;

}

$pagenumbers = array_unique($pagenumbers);

// Build the first/previous links

$isfirst = $page == 0;

$setlimit = true;

$output .= self::build_browse_pagination_pagelink('first',

$params['url'],

$setlimit,

$params['limit'],

0,

'&laquo; First ' . $params['firsttext'],

get_string('firstpage'),

$isfirst,

$params['offsetname']

);

$output .= self::build_browse_pagination_pagelink('prev',

$params['url'],

$setlimit,

$params['limit'],

$params['limit'] * $prev,

'&larr; Previous ' . $params['previoustext'],

get_string('prevpage'),

$isfirst,

$params['offsetname']

);

// Build the pagenumbers in the middle

foreach ($pagenumbers as $k => $i) {

if ($k != 0 && $prevpagenum < $i - 1) {

$output .= 'É';

}

if ($i == $page) {

$output .= '<span class="selected">' . ($i + 1) . '</span>';

}

else {

$output .= self::build_browse_pagination_pagelink('',

$params['url'],

$setlimit,

$params['limit'],

$params['limit'] * $i,

$i + 1,

'',

false,

$params['offsetname']

);

}

$prevpagenum = $i;

}

// Build the next/last links

$islast = $page == $last;

$output .= self::build_browse_pagination_pagelink('next',

$params['url'],

$setlimit,

$params['limit'],

$params['limit'] * $next,

$params['nexttext'] . ' Next &rarr;',

get_string('nextpage'),

$islast, $params['offsetname']

);

}

$js = '';

// Close the container div

$output .= '</div>';

return array('html' => $output, 'javascript' => $js);

}

function build_browse_pagination_pagelink($class, $url, $setlimit, $limit, $offset, $text, $title, $disabled=false, $offsetname='offset') {

$url = "javascript:Browse.filtercontent('recentwork'," . $limit . "," . $offset . ");";

//$url = "javascript:groupviewsimage.filtercontent('recentwork'," . $limit . "," . $offset . ");";

if ($disabled) {

//20140627 JW display nothing if the button is disabled

//$return = '<span class="pagination';

//$return .= ($class) ? " $class" : '';

//$return .= ' disabled">' . $text . '</span>';

}

else {

$return = '<span class="pagination';

$return .= ($class) ? " $class" : '';

$return .= '">'

. '<a href="' . $url . '" title="' . $title

. '">' . $text . '</a></span>';

}

return $return;

}

/** End of Mike Kelly's code **/