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<?php
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/**
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* Implementation of hook_views_style_plugins.
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*
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* Add this type to the view style drop down (adds to both Page and Block type)
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*/
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function ajax_views_views_style_plugins() {
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return array(
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'ajax_view' => array(
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'name' => t('AJAX Paging Block View'),
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'theme' => 'views_ajax',
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'validate' => 'ajax_views_plugin_validate',
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'weight' => -12,
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),
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);
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}
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/**
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* Add this argument to the arguments drop down.
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*/
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function ajax_views_views_arguments() {
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$arguments = array(
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'ajax_response' => array(
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'name' => t('AJAX Views: AJAX Selector'),
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'handler' => 'views_handler_arg_ajax',
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'option' => 'string',
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'help' => t('This argument specifies an AJAX selector (/ajax).'),
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),
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);
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return $arguments;
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}
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/**
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* Ajax views validation callback.
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*
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* Makes sure that the Paged Block is only specifed on the Block group.
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*/
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function ajax_views_plugin_validate($type, $view, $form) {
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// Ensure AJAX Block is not specified as a Page Type
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if ($view['page_type'] == 'ajax_view') {
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form_error($form["$type-info"]['page_type'], t('AJAX Paging Block View can only be specified on a Block.'));
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}
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// Ensure AJAX Block is specified as a Block Type, that the AJAX Selector is also specified
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if ($view['block_type'] == 'ajax_view') {
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$has_ajax_argument = false;
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foreach ($view['argument'] as $argument) {
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if($argument['type'] == 'ajax_response') {
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$has_ajax_argument = true;
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break;
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}
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}
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if(!$has_ajax_argument) {
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form_error($form["$type-info"]['block_type'], t('If you specify AJAX Paging Block View, then you must also add the AJAX Selector as an argument.'));
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}
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}
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}
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/**
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* Handler for our own ajax_views argument; mimics the feed selector
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*/
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function views_handler_arg_ajax($op, &$query, $argtype, $arg = '') {
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switch($op) {
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case 'summary':
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case 'sort':
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case 'link':
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case 'title':
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break;
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case 'filter':
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// This is a clone of the default selector, but it just invokes ours
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// rather than calling all of them.
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ajax_views_ajax_argument('argument', $GLOBALS['current_view'], $arg, $argtype);
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}
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}
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/**
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* Ajax/Feed argument hook that will convert us to an Ajax page or RSS Feed.
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* the 4th argument isn't part of the hook, but we use it to differentiate
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* when called as a hook or when called manually from views_rss_views_post_view
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*/
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function ajax_views_ajax_argument($op, &$view, $arg, $argdata = NULL) {
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if ($op == 'argument' && $arg == 'ajax') {
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if($arg == 'ajax') {
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$view->page_type = 'ajax_view';
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$view->pager_limit = $view->nodes_per_block;
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}
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if ($argdata['options']) {
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$view->description = $argdata['options'];
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}
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// reset the 'real url' to the URL without the ajax argument.
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$view_args = array();
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$max = count($view->args);
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foreach ($view->args as $id => $view_arg) {
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++$count;
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if ($view_arg == $arg && $view->argument[$id]['id'] == $argdata['id']) {
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if ($count != $max) {
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$view_args[] = $argdata['wildcard'];
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}
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}
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else {
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$view_args[] = $view_arg;
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}
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}
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$view->feed_url = views_get_url($view, $view_args);
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}
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}
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/**
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* Main theme function for ajax views. This will get called for any block that has
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* the AJAX View type specified, or for any page with the AJAX View Argument (/ajax)
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* specified. So this is a traffic cop to render both the block wrapper, and the ajax
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* content that is held within the wrapper.
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*
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* You can simply override views_ajax_block or views_ajax_page to control the style
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* of these rendering across the entire site, or you can append the view name to the
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* end to customize specific renderings, for example: views_ajax_page_press_releases for
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* a view with the name press_releases.
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*
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* @param $view The View
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* @param $nodes An array of nodes to render
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* @param $type The type of view (in this case 'page')
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* @return The themed content.
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*/
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function theme_views_ajax($view, $nodes, $type) {
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if($type == 'block') {
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$function = 'views_ajax_block';
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}
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else if($type == 'page') {
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$function = 'views_ajax_page';
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}
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else {
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return;
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}
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if (!($func = theme_get_function($function . "_" . $view->name))) {
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$func = theme_get_function($function);
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}
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if ($func) {
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$args = func_get_args();
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return call_user_func_array($func, $args);
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}
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return;
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}
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/**
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* Generate the appropriate ajax url, inserting wildcards for all things
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* except our ajax selector.
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*/
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function _generate_ajax_url($view) {
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$url .= "$view->url";
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$i = 0;
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foreach ($view->argument as $argument) {
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if($argument['type'] == 'ajax_response') {
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$url .= "/ajax";
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}
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else if ($view->args[$i]){
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$url .= '/' . $view->args[$i];
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}
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else if ($argument['wildcard']) {
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$url .= '/' . $argument['wildcard'];
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}
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else {
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$url .= "/*";
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}
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$i++;
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}
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return url($url);
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}
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/**
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* Theme function to render the body of the ajax-ified block. This default returns a div
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* and some javascript to load the first page via jQuery.
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*
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* @param $view The View
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* @param $nodes An array of nodes to render
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* @param $type The type of view (in this case 'page')
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* @return The content of the block.
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*/
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function theme_views_ajax_block($view, $nodes, $type) {
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$ajax_url = _generate_ajax_url($view);
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$view_css = views_css_safe("ajax-view-block-$view->name");
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drupal_add_css(drupal_get_path('module', 'ajax_views') . '/ajax_views.css');
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drupal_add_js(drupal_get_path('module', 'ajax_views') . '/ajax_views.js');
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drupal_add_js("$(document).ready(function() {
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$.get('$ajax_url', {page: 0}, function(data, status) {
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$('.$view_css').html(data);
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});
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})", "inline");
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$output .= "<div class='$view_css'>";
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$output .= theme_image('misc/progress.gif', 'Progress') . " Loading content for $view->page_title";
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$output .= "</div>";
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return $output;
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}
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/**
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* Theme function to render the dynamic ajax page that is served to the block. This function
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* exits so it will not get wrapped by page.tpl.php.
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*
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* @param $view The View
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* @param $nodes An array of nodes to render
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* @param $type The type of view (in this case 'page')
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*/
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function theme_views_ajax_page($view, $nodes, $type) {
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//$output .= '<pre>' . print_r($view->args, true) . '</pre>';
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$output .= '<div class="ajax_views_headers">';
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$output .= '<div class="title">' . l($view->page_title, $view->url) . '</div>';
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if ( _has_feed_argument($view) ) {
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$output .= '<div class="rss">' . theme_image('misc/feed.png') . ' ' . l("RSS", "$view->url/feed") . '</div>';
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}
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$output .= '<div style="clear:both;"></div>';
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$output .= '</div>';
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$output .= "<div class='ajax_views_body'>";
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if (count($nodes)) {
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$function = "views_ajax_page_item";
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if (!($func = theme_get_function($function . "_" . $view->name))) {
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$func = theme_get_function($function);
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}
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$rendered_nodes = array();
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foreach($nodes as $node) {
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$current = node_load($node->nid);
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$rendered_nodes[] = call_user_func($func, $current);
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}
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$output .= theme('item_list', $rendered_nodes);
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}
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else
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$output .= views_get_textarea($view, 'block', 'empty');
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$output .= "</div>";
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$output .= theme('views_ajax_block_pager', $view);
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drupal_set_header('Content-Type: text/html; charset=utf-8');
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print $output;
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module_invoke_all('exit');
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exit;
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}
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/**
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* Theme function to render the dynamic ajax page individual items that are served to the block.
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*
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* @param $node The nodes to render
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*/
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function theme_views_ajax_page_item($node) {
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//return '<pre>' . print_r($node, true) . '</pre>';
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return l($node->title, "node/$node->nid");
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}
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function theme_views_ajax_block_pager($view) {
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$ajax_url = _generate_ajax_url($view);
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$view_css = views_css_safe("ajax-view-block-$view->name");
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$total_pages = ceil($view->total_rows / $view->pager_limit);
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$current_page = isset($_GET['page']) ? $_GET['page'] : 0;
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$output .= '<div class="ajax_views_footers">';
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$output .= '<div class="ajax_pager_link ajax_prev"> ';
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if ($current_page > 0) {
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$onclick = "return fetchPage('.$view_css', '$ajax_url', " . ($current_page - 1) . ")";
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$output .= l(t('< Previous'), '', array('onclick' => $onclick));
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}
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$output .= '</div>';
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$output .= "<div class='ajax_pages'> ";
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if ($total_pages > 1) {
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$readable_page = $current_page + 1;
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$output .= "$readable_page of $total_pages";
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}
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$output .= "</div>";
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$output .= '<div class="ajax_pager_link ajax_next"> ';
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if ($current_page + 1 < $total_pages) {
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$onclick = "return fetchPage('.$view_css', '$ajax_url', " . ($current_page + 1) . ")";
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$output .= l(t('Next >'), '', array('onclick' => $onclick));
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}
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$output .= '</div>';
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$output .= '</div>';
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return $output;
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}
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/**
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* Returns true if the provided view has the rss_feed argument configured.
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*/
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function _has_feed_argument($view) {
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foreach ($view->argument as $argument) {
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if($argument['type'] == 'rss_feed') {
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return true;
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}
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}
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return false;
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}
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