Cleaned up and moved grid/list display logic into islandora, since its now used in several modules.

css/islandora.objects.css

@@ -0,0 +1,39 @@
+/**
+ * @file
+ * Styles for rendering grids/lists of objects.
+ */
+.islandora-objects-display-switch {
+  float: right;
+}
+.islandora-objects-grid-item {
+  display: inline-block;
+  width: 20%;
+  min-width: 100px;
+  min-height: 180px;
+  display: -moz-inline-stack;
+  display: inline-block;
+  vertical-align: top;
+  margin: 1.5em 1.84%;
+  zoom: 1;
+  *display: inline;
+  _height: 180px;
+}
+.islandora-objects-list-item {
+  padding-bottom: 1.5em;
+  border-bottom: 1px solid #ddd;
+}
+.islandora-objects-list-item .islandora-object-thumb {
+  clear: left;
+  float: left;
+  padding: 3px 0 0;
+  text-align: center;
+  width: 100px;
+}
+.islandora-objects-list-item .islandora-object-caption, .islandora-objects-list-item .islandora-object-description {
+  margin: 0 0 0 130px;
+  padding-top: 2px;
+  padding-bottom: 2px;
+}
+.islandora-object-thumb img {
+  width: 100%;
+}

islandora.module

@@ -286,6 +286,29 @@ function islandora_theme() {
       'file' => 'theme/theme.inc',
       'variables' => array('object' => NULL, 'content' => array()),
     ),
+    // Render a bunch of objects as either a grid or a list.
+    'islandora_objects' => array(
+      'file' => 'theme/theme.inc',
+      'template' => 'theme/islandora-objects',
+      'variables' => array(
+        'objects' => NULL,
+        'display' => NULL,
+        'page_size' => 20,
+        'limit' => 10,
+      ),
+    ),
+    // Render a bunch of objects as a grid.
+    'islandora_objects_grid' => array(
+      'file' => 'theme/theme.inc',
+      'template' => 'theme/islandora-objects-grid',
+      'variables' => array('objects' => NULL),
+    ),
+    // Render a bunch of objects as a list.
+    'islandora_objects_list' => array(
+      'file' => 'theme/theme.inc',
+      'template' => 'theme/islandora-objects-list',
+      'variables' => array('objects' => NULL),
+    ),
   );
 }
 

theme/islandora-objects-grid.tpl.php

@@ -0,0 +1,17 @@
+<?php
+
+/**
+ * @file
+ * Render a bunch of objects in a list or grid view.
+ */
+?>
+<div class="islandora-objects-grid clearfix">
+ <?php foreach($objects as $object): ?>
+   <div class="islandora-objects-grid-item clearfix">
+     <dl class="islandora-object <?php print $object['class']; ?>">
+       <dt class="islandora-object-thumb"><?php print $object['thumb']; ?></dt>
+       <dd class="islandora-object-caption"><?php print $object['link']; ?></dd>
+     </dl>
+   </div>
+ <?php endforeach; ?>
+</div>

theme/islandora-objects-list.tpl.php

@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * @file
+ * Render a bunch of objects in a list or grid view.
+ */
+?>
+<div class="islandora-objects-list">
+  <?php $row_field = 0; ?>
+  <?php foreach($objects as $object): ?>
+    <?php $first = ($row_field == 0) ? 'first' : ''; ?>
+    <div class="islandora-objects-list-item clearfix">
+      <dl class="islandora-object <?php print $object['class']; ?>">
+        <dt class="islandora-object-thumb">
+          <?php print $object['thumb']; ?>
+        </dt>
+        <dd class="islandora-object-caption <?php print $object['class']?> <?php print $first; ?>">
+          <strong>
+            <?php print $object['link']; ?>
+          </strong>
+        </dd>
+        <dd class="islandora-object-description">
+          <?php print $object['description']; ?>
+        </dd>
+      </dl>
+    </div>
+    <?php $row_field++; ?>
+  <?php endforeach; ?>
+</div>

theme/islandora-objects.tpl.php

@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * @file
+ * Render a bunch of objects in a list or grid view.
+ */
+?>
+<div class="islandora-objects clearfix">
+  <span class="islandora-objects-display-switch">
+    <?php print theme('links', array('links' => $display_links, 'attributes' => array('class' => array('links', 'inline')))); ?>
+  </span>
+  <?php print $pager; ?>
+  <?php print $content; ?>
+  <?php print $pager; ?>
+</div>

theme/theme.inc

@@ -157,3 +157,64 @@ function islandora_preprocess_islandora_object_print(array &$variables) {
 function theme_islandora_object_print(array &$variables) {
   return drupal_render($variables['content']);
 }
+
+/**
+ * Implements hook_preprocess_theme().
+ */
+function islandora_preprocess_islandora_objects(array &$variables) {
+  module_load_include('inc', 'islandora_paged_content', 'includes/utilities');
+  $display = (empty($_GET['display'])) ? 'grid' : $_GET['display'];
+  $grid_display = $display == 'grid';
+  $list_display = !$grid_display;
+  $query_params = drupal_get_query_parameters($_GET);
+  $variables['display_links'] = array(
+    array(
+      'title' => t('Grid view'),
+      'href' => url($_GET['q'], array('absolute' => TRUE)),
+      'attributes' => array(
+        'class' => $grid_display ? 'active' : '',
+      ),
+      'query' => array('display' => 'grid') + $query_params,
+    ),
+    array(
+      'title' => t('List view'),
+      'href' => url($_GET['q'], array('absolute' => TRUE)),
+      'attributes' => array(
+        'class' => $list_display ? 'active' : '',
+      ),
+      'query' => array('display' => 'list') + $query_params,
+    ),
+  );
+  // Pager.
+  $objects = $variables['objects'];
+  $limit = $variables['limit'];
+  $page_size = $variables['page_size'];
+  $page = pager_default_initialize(count($objects), $limit);
+  $objects = array_slice($objects, $page * $limit, $limit);
+  $variables['pager'] = theme('pager', array('quantity' => 10));
+  // Content.
+  $map_objects = function($o) {
+    $o = islandora_object_load($o);
+    $url = "islandora/object/{$o->id}";
+    $link_options = array('html' => TRUE, 'attributes' => array('title' => $o->label));
+    $img = theme_image(array('path' => url("$url/datastream/TN/view"), 'attributes' => array()));
+    $description = NULL;
+    $dc = DublinCore::importFromXMLString($o['DC']->content);
+    if ($dc) {
+      $dc = $dc->asArray();
+      $description = $dc['dc:description']['value'];
+    }
+    return array(
+      'label' => $o->label,
+      'class' => drupal_strtolower(preg_replace('/[^A-Za-z0-9]/', '-', $o->id)),
+      'link' => l($o->label, $url, $link_options),
+      'thumb' => l($img, $url, $link_options),
+      'description' => $description,
+    );
+  };
+  $objects = array_map($map_objects, $objects);
+  $theme = $grid_display ? 'islandora_objects_grid' : 'islandora_objects_list';
+  $variables['content'] = theme($theme, array('objects' => $objects));
+  $module_path = drupal_get_path('module', 'islandora');
+  drupal_add_css("$module_path/css/islandora.objects.css");
+}