function wff_group_creation_button()
    {
        if (bp_is_groups_component() && bp_is_directory() && is_user_logged_in() && bp_user_can_create_groups()) {
            ?>

			<div class="btn btn-primary create-group-button hidden-xs">
				<i class="fa fa-user-plus"></i> <?php 
            bp_group_create_button();
            ?>
			</div>

		<?php 
        }
    }

	<?php 
do_action('bp_before_directory_groups_page');
?>

		<div class="padder">

		<?php 
do_action('bp_before_directory_groups');
?>

		<form action="" method="post" id="groups-directory-form" class="dir-form">

			<h3><?php 
_e('Groups Directory', 'buddypress');
if (is_user_logged_in() && bp_user_can_create_groups()) {
    ?>
 &nbsp;<a class="button" href="<?php 
    echo trailingslashit(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create');
    ?>
"><?php 
    _e('Create a Group', 'buddypress');
    ?>
</a><?php 
}
?>
</h3>

			<?php 
do_action('bp_before_directory_groups_content');
?>

/**
 * Display the Groups admin index screen.
 *
 * This screen contains a list of all BuddyPress groups.
 *
 * @since 1.7.0
 *
 * @global BP_Groups_List_Table $bp_groups_list_table Group screen list table.
 * @global string $plugin_page Currently viewed plugin page.
 */
function bp_groups_admin_index()
{
    global $bp_groups_list_table, $plugin_page;
    $messages = array();
    // If the user has just made a change to a group, build status messages
    if (!empty($_REQUEST['deleted'])) {
        $deleted = !empty($_REQUEST['deleted']) ? (int) $_REQUEST['deleted'] : 0;
        if ($deleted > 0) {
            $messages[] = sprintf(_n('%s group has been permanently deleted.', '%s groups have been permanently deleted.', $deleted, 'buddypress'), number_format_i18n($deleted));
        }
    }
    // Prepare the group items for display
    $bp_groups_list_table->prepare_items();
    /**
     * Fires before the display of messages for the edit form.
     *
     * Useful for plugins to modify the messages before display.
     *
     * @since 1.7.0
     *
     * @param array $messages Array of messages to be displayed.
     */
    do_action('bp_groups_admin_index', $messages);
    ?>

	<div class="wrap">
		<?php 
    screen_icon('buddypress-groups');
    ?>
		<h2>
			<?php 
    _e('Groups', 'buddypress');
    ?>

			<?php 
    if (is_user_logged_in() && bp_user_can_create_groups()) {
        ?>
				<a class="add-new-h2" href="<?php 
        echo trailingslashit(bp_get_groups_directory_permalink() . 'create');
        ?>
"><?php 
        _e('Add New', 'buddypress');
        ?>
</a>
			<?php 
    }
    ?>

			<?php 
    if (!empty($_REQUEST['s'])) {
        ?>
				<span class="subtitle"><?php 
        printf(__('Search results for &#8220;%s&#8221;', 'buddypress'), wp_html_excerpt(esc_html(stripslashes($_REQUEST['s'])), 50));
        ?>
</span>
			<?php 
    }
    ?>
		</h2>

		<?php 
    // If the user has just made a change to an group, display the status messages
    ?>
		<?php 
    if (!empty($messages)) {
        ?>
			<div id="moderated" class="<?php 
        echo !empty($_REQUEST['error']) ? 'error' : 'updated';
        ?>
"><p><?php 
        echo implode("<br/>\n", $messages);
        ?>
</p></div>
		<?php 
    }
    ?>

		<?php 
    // Display each group on its own row
    ?>
		<?php 
    $bp_groups_list_table->views();
    ?>

		<form id="bp-groups-form" action="" method="get">
			<?php 
    $bp_groups_list_table->search_box(__('Search all Groups', 'buddypress'), 'bp-groups');
    ?>
			<input type="hidden" name="page" value="<?php 
    echo esc_attr($plugin_page);
//.........这里部分代码省略.........

/**
 * Get the Create a Group button.
 *
 * @since BuddyPress (2.0.0)
 *
 * @return string
 */
function bp_get_group_create_button()
{
    if (!is_user_logged_in()) {
        return false;
    }
    if (!bp_user_can_create_groups()) {
        return false;
    }
    $button_args = array('id' => 'create_group', 'component' => 'groups', 'link_text' => __('Create a Group', 'buddypress'), 'link_title' => __('Create a Group', 'buddypress'), 'link_class' => 'button group-create bp-title-button', 'link_href' => trailingslashit(bp_get_root_domain()) . trailingslashit(bp_get_groups_root_slug()) . trailingslashit('create'), 'wrapper' => false);
    return bp_get_button(apply_filters('bp_get_group_create_button', $button_args));
}

/**
 * Get the Create a Group button.
 *
 * @since 2.0.0
 *
 * @return string
 */
function bp_get_group_create_button()
{
    if (!is_user_logged_in()) {
        return false;
    }
    if (!bp_user_can_create_groups()) {
        return false;
    }
    $button_args = array('id' => 'create_group', 'component' => 'groups', 'link_text' => __('Create a Group', 'buddypress'), 'link_title' => __('Create a Group', 'buddypress'), 'link_class' => 'group-create no-ajax', 'link_href' => trailingslashit(bp_get_groups_directory_permalink() . 'create'), 'wrapper' => false, 'block_self' => false);
    /**
     * Filters the HTML button for creating a group.
     *
     * @since 2.0.0
     *
     * @param string $button HTML button for creating a group.
     */
    return bp_get_button(apply_filters('bp_get_group_create_button', $button_args));
}

<?php 
do_action('bp_before_directory_groups_page');
?>

<section id="grouptitle">
    <div class="container">
        <div class="row">
            <div class="col-md-9 col-sm-8">
                <div class="pagetitle">
                    <h1>Courses</h1>
                </div>
            </div>
            <div class="col-md-3 col-sm-4">
            	<?php 
if (is_user_logged_in() && bp_user_can_create_groups() && !newwriting_is_lurker()) {
    ?>
					&nbsp;
					<a class="button create-group-button full" href="<?php 
    echo trailingslashit(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create');
    ?>
"><?php 
    _e('Create a Course', 'vibe');
    ?>
</a>
				<?php 
}
?>
            </div>
        </div>
    </div>

/**
 * Check the current user's capability to edit an avatar for a given object.
 *
 * @since  2.3.0
 *
 * @param  string $capability The capability to check.
 * @param  array  $args       An array containing the item_id and the object to check.
 *
 * @return bool
 */
function bp_attachments_current_user_can($capability, $args = array())
{
    $can = false;
    if ('edit_avatar' === $capability || 'edit_cover_image' === $capability) {
        /**
         * Needed avatar arguments are set.
         */
        if (isset($args['item_id']) && isset($args['object'])) {
            // Group profile photo
            if (bp_is_active('groups') && 'group' === $args['object']) {
                if (bp_is_group_create()) {
                    $can = (bool) groups_is_user_creator(bp_loggedin_user_id(), $args['item_id']) || bp_current_user_can('bp_moderate');
                } else {
                    $can = (bool) groups_is_user_admin(bp_loggedin_user_id(), $args['item_id']) || bp_current_user_can('bp_moderate');
                }
                // User profile photo
            } elseif (bp_is_active('xprofile') && 'user' === $args['object']) {
                $can = bp_loggedin_user_id() === (int) $args['item_id'] || bp_current_user_can('bp_moderate');
            }
            /**
             * No avatar arguments, fallback to bp_user_can_create_groups()
             * or bp_is_item_admin()
             */
        } else {
            if (bp_is_group_create()) {
                $can = bp_user_can_create_groups();
            } else {
                $can = bp_is_item_admin();
            }
        }
    }
    return apply_filters('bp_attachments_current_user_can', $can, $capability, $args);
}

 /**
  * Set up the component entries in the WordPress Admin Bar.
  *
  * @see BP_Component::setup_nav() for a description of the $wp_admin_nav
  *      parameter array.
  *
  * @param array $wp_admin_nav See BP_Component::setup_admin_bar() for a description.
  */
 public function setup_admin_bar($wp_admin_nav = array())
 {
     // Menus for logged in user.
     if (is_user_logged_in()) {
         // Setup the logged in user variables.
         $groups_link = trailingslashit(bp_loggedin_user_domain() . bp_get_groups_slug());
         // Pending group invites.
         $count = groups_get_invite_count_for_user();
         $title = _x('Groups', 'My Account Groups', 'buddypress');
         $pending = _x('No Pending Invites', 'My Account Groups sub nav', 'buddypress');
         if (!empty($count['total'])) {
             $title = sprintf(_x('Groups <span class="count">%s</span>', 'My Account Groups nav', 'buddypress'), bp_core_number_format($count));
             $pending = sprintf(_x('Pending Invites <span class="count">%s</span>', 'My Account Groups sub nav', 'buddypress'), bp_core_number_format($count));
         }
         // Add the "My Account" sub menus.
         $wp_admin_nav[] = array('parent' => buddypress()->my_account_menu_id, 'id' => 'my-account-' . $this->id, 'title' => $title, 'href' => $groups_link);
         // My Groups.
         $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-memberships', 'title' => _x('Memberships', 'My Account Groups sub nav', 'buddypress'), 'href' => $groups_link);
         // Invitations.
         $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-invites', 'title' => $pending, 'href' => trailingslashit($groups_link . 'invites'));
         // Create a Group.
         if (bp_user_can_create_groups()) {
             $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-create', 'title' => _x('Create a Group', 'My Account Groups sub nav', 'buddypress'), 'href' => trailingslashit(bp_get_groups_directory_permalink() . 'create'));
         }
     }
     parent::setup_admin_bar($wp_admin_nav);
 }

/**
 * Catch and process group creation form submissions.
 */
function groups_action_create_group()
{
    global $bp;
    // If we're not at domain.org/groups/create/ then return false
    if (!bp_is_groups_component() || !bp_is_current_action('create')) {
        return false;
    }
    if (!is_user_logged_in()) {
        return false;
    }
    if (!bp_user_can_create_groups()) {
        bp_core_add_message(__('Sorry, you are not allowed to create groups.', 'buddypress'), 'error');
        bp_core_redirect(trailingslashit(bp_get_root_domain() . '/' . bp_get_groups_root_slug()));
    }
    // Make sure creation steps are in the right order
    groups_action_sort_creation_steps();
    // If no current step is set, reset everything so we can start a fresh group creation
    $bp->groups->current_create_step = bp_action_variable(1);
    if (!bp_get_groups_current_create_step()) {
        unset($bp->groups->current_create_step);
        unset($bp->groups->completed_create_steps);
        setcookie('bp_new_group_id', false, time() - 1000, COOKIEPATH);
        setcookie('bp_completed_create_steps', false, time() - 1000, COOKIEPATH);
        $reset_steps = true;
        $keys = array_keys($bp->groups->group_creation_steps);
        bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/step/' . array_shift($keys) . '/');
    }
    // If this is a creation step that is not recognized, just redirect them back to the first screen
    if (bp_get_groups_current_create_step() && empty($bp->groups->group_creation_steps[bp_get_groups_current_create_step()])) {
        bp_core_add_message(__('There was an error saving group details. Please try again.', 'buddypress'), 'error');
        bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/');
    }
    // Fetch the currently completed steps variable
    if (isset($_COOKIE['bp_completed_create_steps']) && !isset($reset_steps)) {
        $bp->groups->completed_create_steps = json_decode(base64_decode(stripslashes($_COOKIE['bp_completed_create_steps'])));
    }
    // Set the ID of the new group, if it has already been created in a previous step
    if (isset($_COOKIE['bp_new_group_id'])) {
        $bp->groups->new_group_id = (int) $_COOKIE['bp_new_group_id'];
        $bp->groups->current_group = groups_get_group(array('group_id' => $bp->groups->new_group_id));
        // Only allow the group creator to continue to edit the new group
        if (!bp_is_group_creator($bp->groups->current_group, bp_loggedin_user_id())) {
            bp_core_add_message(__('Only the group creator may continue editing this group.', 'buddypress'), 'error');
            bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/');
        }
    }
    // If the save, upload or skip button is hit, lets calculate what we need to save
    if (isset($_POST['save'])) {
        // Check the nonce
        check_admin_referer('groups_create_save_' . bp_get_groups_current_create_step());
        if ('group-details' == bp_get_groups_current_create_step()) {
            if (empty($_POST['group-name']) || empty($_POST['group-desc']) || !strlen(trim($_POST['group-name'])) || !strlen(trim($_POST['group-desc']))) {
                bp_core_add_message(__('Please fill in all of the required fields', 'buddypress'), 'error');
                bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/step/' . bp_get_groups_current_create_step() . '/');
            }
            $new_group_id = isset($bp->groups->new_group_id) ? $bp->groups->new_group_id : 0;
            if (!($bp->groups->new_group_id = groups_create_group(array('group_id' => $new_group_id, 'name' => $_POST['group-name'], 'description' => $_POST['group-desc'], 'slug' => groups_check_slug(sanitize_title(esc_attr($_POST['group-name']))), 'date_created' => bp_core_current_time(), 'status' => 'public')))) {
                bp_core_add_message(__('There was an error saving group details, please try again.', 'buddypress'), 'error');
                bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/step/' . bp_get_groups_current_create_step() . '/');
            }
        }
        if ('group-settings' == bp_get_groups_current_create_step()) {
            $group_status = 'public';
            $group_enable_forum = 1;
            if (!isset($_POST['group-show-forum'])) {
                $group_enable_forum = 0;
            } else {
                // Create the forum if enable_forum = 1
                if (bp_is_active('forums') && !groups_get_groupmeta($bp->groups->new_group_id, 'forum_id')) {
                    groups_new_group_forum();
                }
            }
            if ('private' == $_POST['group-status']) {
                $group_status = 'private';
            } else {
                if ('hidden' == $_POST['group-status']) {
                    $group_status = 'hidden';
                }
            }
            if (!($bp->groups->new_group_id = groups_create_group(array('group_id' => $bp->groups->new_group_id, 'status' => $group_status, 'enable_forum' => $group_enable_forum)))) {
                bp_core_add_message(__('There was an error saving group details, please try again.', 'buddypress'), 'error');
                bp_core_redirect(bp_get_root_domain() . '/' . bp_get_groups_root_slug() . '/create/step/' . bp_get_groups_current_create_step() . '/');
            }
            // Set the invite status
            // Checked against a whitelist for security
            $allowed_invite_status = apply_filters('groups_allowed_invite_status', array('members', 'mods', 'admins'));
            $invite_status = !empty($_POST['group-invite-status']) && in_array($_POST['group-invite-status'], (array) $allowed_invite_status) ? $_POST['group-invite-status'] : 'members';
            groups_update_groupmeta($bp->groups->new_group_id, 'invite_status', $invite_status);
        }
        if ('group-invites' === bp_get_groups_current_create_step()) {
            if (!empty($_POST['friends'])) {
                foreach ((array) $_POST['friends'] as $friend) {
                    groups_invite_user(array('user_id' => $friend, 'group_id' => $bp->groups->new_group_id));
                }
            }
            groups_send_invites(bp_loggedin_user_id(), $bp->groups->new_group_id);
        }
//.........这里部分代码省略.........

 /**
  * Set up the Toolbar
  *
  * @global BuddyPress $bp The one true BuddyPress instance
  */
 public function setup_admin_bar($wp_admin_nav = array())
 {
     global $bp;
     // Prevent debug notices
     $wp_admin_nav = array();
     // Menus for logged in user
     if (is_user_logged_in()) {
         // Setup the logged in user variables
         $user_domain = bp_loggedin_user_domain();
         $groups_link = trailingslashit($user_domain . $this->slug);
         // Pending group invites
         $count = groups_get_invites_for_user(bp_loggedin_user_id());
         $title = __('Groups', 'buddypress');
         $pending = __('No Pending Invites', 'buddypress');
         if (!empty($count['total'])) {
             $title = sprintf(__('Groups <span class="count">%s</span>', 'buddypress'), $count['total']);
             $pending = sprintf(__('Pending Invites <span class="count">%s</span>', 'buddypress'), $count['total']);
         }
         // Add the "My Account" sub menus
         $wp_admin_nav[] = array('parent' => $bp->my_account_menu_id, 'id' => 'my-account-' . $this->id, 'title' => $title, 'href' => trailingslashit($groups_link));
         // My Groups
         $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-memberships', 'title' => __('Memberships', 'buddypress'), 'href' => trailingslashit($groups_link));
         // Invitations
         $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-invites', 'title' => $pending, 'href' => trailingslashit($groups_link . 'invites'));
         // Create a Group
         if (bp_user_can_create_groups()) {
             $wp_admin_nav[] = array('parent' => 'my-account-' . $this->id, 'id' => 'my-account-' . $this->id . '-create', 'title' => __('Create a Group', 'buddypress'), 'href' => trailingslashit(bp_get_groups_directory_permalink() . 'create'));
         }
     }
     parent::setup_admin_bar($wp_admin_nav);
 }

    function display($page = 1)
    {
        global $bp, $groups_template;
        $parent_template = $groups_template;
        $hide_button = false;
        if (isset($_REQUEST['grpage'])) {
            $page = (int) $_REQUEST['grpage'];
        } else {
            if (!is_numeric($page)) {
                $page = 1;
            } else {
                $page = (int) $page;
            }
        }
        /** Respect BuddyPress group creation restriction */
        if (function_exists('bp_user_can_create_groups')) {
            $hide_button = !bp_user_can_create_groups();
        }
        bp_has_groups_hierarchy(array('type' => 'alphabetical', 'parent_id' => $bp->groups->current_group->id, 'page' => $page));
        ?>
		<div class="group">

			<?php 
        if (($bp->is_item_admin || $bp->groups->current_group->can_create_subitems) && !$hide_button) {
            ?>
			<div class="generic-button group-button">
				<a title="<?php 
            printf(__('Create a %s', 'bp-group-hierarchy'), __('Member Group', 'bp-group-hierarchy'));
            ?>
" href="<?php 
            echo $bp->root_domain . '/' . bp_get_groups_root_slug() . '/' . 'create' . '/?parent_id=' . $bp->groups->current_group->id;
            ?>
"><?php 
            printf(__('Create a %s', 'bp-group-hierarchy'), __('Member Group', 'bp-group-hierarchy'));
            ?>
</a>
			</div><br /><br />
			<?php 
        }
        ?>

		<?php 
        if ($groups_template && count($groups_template->groups) > 0) {
            ?>

			<div id="pag-top" class="pagination">
				<div class="pag-count" id="group-dir-count-top">
					<?php 
            bp_groups_pagination_count();
            ?>
				</div>
		
				<div class="pagination-links" id="group-dir-pag-top">
					<?php 
            bp_groups_pagination_links();
            ?>
				</div>
			</div>
	
			<ul id="groups-list" class="item-list">
				<?php 
            while (bp_groups()) {
                bp_the_group();
                ?>
				<?php 
                $subgroup = $groups_template->group;
                ?>
				<?php 
                if ($subgroup->status == 'hidden' && !(groups_is_user_member($bp->loggedin_user->id, $subgroup->id) || groups_is_user_admin($bp->loggedin_user->id, $bp->groups->current_group->id))) {
                    continue;
                }
                ?>
				<li id="tree-childof_<?php 
                bp_group_id();
                ?>
">
					<div class="item-avatar">
						<a href="<?php 
                bp_group_permalink();
                ?>
"><?php 
                bp_group_avatar('type=thumb&width=50&height=50');
                ?>
</a>
					</div>
		
					<div class="item">
						<div class="item-title"><a href="<?php 
                bp_group_permalink();
                ?>
"><?php 
                bp_group_name();
                ?>
</a></div>
						<div class="item-meta"><span class="activity"><?php 
                printf(__('active %s', 'buddypress'), bp_get_group_last_active());
                ?>
</span></div>
						<div class="item-desc"><?php 
                bp_group_description_excerpt();
//.........这里部分代码省略.........

 /**
  * Update the global $post with create screen data
  *
  * @since BuddyPress (1.7)
  */
 public function create_dummy_post()
 {
     // Title based on ability to create groups
     if (is_user_logged_in() && bp_user_can_create_groups()) {
         $title = '<a class="button" href="' . trailingslashit(bp_get_root_domain() . '/' . bp_get_groups_root_slug()) . '">' . __('Groups', 'buddypress') . '</a>&nbsp;' . __('Create a Group', 'buddypress');
     } else {
         $title = __('Groups', 'buddypress');
     }
     bp_theme_compat_reset_post(array('ID' => 0, 'post_title' => $title, 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => 'bp_group', 'post_status' => 'publish', 'is_archive' => true, 'comment_status' => 'closed'));
 }

 function bp_group_create_get_output()
 {
     if (!bp_user_can_create_groups()) {
         return false;
     }
     $this->_show_group_maps_admin_body();
 }