/**
 *  *********************************
 *  Display list of latest blog posts
 *  *********************************
 */
class MW_Widget_Latest_Posts extends MW_Widget
{
    public $isCachable = TRUE;
    public $wpCacheKey = 'mw_widget_recent_posts';

    /**
     * Widget setup.
     */
    public function MW_Widget_Latest_Posts ()
    {
        $this->setupWidget(array(
            'name' => __('MW - Latest Blog Posts', 'mw_frm'),
            'description' => __("Display most recent blog posts", 'mw_frm'),
            'classname' => 'mw-widget-recent-posts',
            'id_base' => 'mw-widget-recent-posts'
        ));

        $this->default = array(
            'title' => __('Recent blog posts', 'mw_frm'),
            'category' => -1, // All categories
            'number' => 5,
            'thumbs' => 'yes',
            'show_boxed' => 'no',
            'set_custom_styles' => 'no',
            'bg_color' => $this->get_default_widget_style('widget_bg_col'),
            'border_color' => $this->get_default_widget_style('widget_border_col')
        );
    }

    /**
     * Display widget on the frontend.
     */
    public function widget ($sidebarArgs, $instance)
    {
        $this->getCachableWidget( $instance, $sidebarArgs ); // uses the getWidgetContent method below to get the actual widget content
    }

    /**
     * Get the content for the widget
     */
    public function getWidgetContent ($instance)
    {
        $instance = $this->setDefalutValues( $instance );

        $widgetContent = '';
        $queryArgs = array('showposts' => $instance['number'], 'nopaging' => 0, 'post_status' => 'publish', 'caller_get_posts' => 1);
        if ( $instance['category'] != -1 ) {
            $queryArgs['cat'] = $instance['category'];
        }
        $r = new WP_Query($queryArgs);
        if ($r->have_posts()) {
            while ($r->have_posts()) {
                $r->the_post();
                $permalink = get_permalink();
                $postID = get_the_ID();
                $postTitle = esc_attr( get_the_title() ? get_the_title() : $postID );
                $postLink = sprintf('<a href="%s" title="%s" class="post-link">%s</a>', $permalink, $postTitle, $postTitle);
                $thumbnail = '';
                $postDate = '';
                if ( $instance['thumbs'] == 'yes' ) {
                    $postDate = sprintf( '<span class="widget-post-meta">%s &bull; %s</span>', get_the_author_link(), get_the_time(get_option('date_format')) );
                }
                if ( $instance['thumbs'] == 'yes' && has_post_thumbnail() ) {
                    $thumbnail = get_the_post_thumbnail( $postID, 'post-thumbnail-small', array('class'=>'thumbnail') );
                    $thumbnail = sprintf('<a href="%1$s" class="thumb-post-link">%2$s</a>', $permalink, $thumbnail);
                }
                $widgetContent .=  '<li>' . $thumbnail . $postLink . $postDate . '</li>';
            }
            $thumbsClass = ( $instance['thumbs'] == 'yes' ) ? ' with-thumbnails' : ' no-thumb';
            $widgetContent = sprintf('<ul class="mw-widget-recent-posts-list%s">%s</ul>', $thumbsClass, $widgetContent);
            wp_reset_postdata();
        }
        return $widgetContent;
    }

    /**
     * Update the widget settings.
     */
    public function update ($newIns, $oldIns)
    {
        $newIns['number'] = is_numeric($newIns['number']) ? absint($newIns['number']) : $this->default['number'];
        $newIns['thumbs'] = isset($newIns['thumbs']) && $newIns['thumbs'] == 'yes' ? 'yes' : 'no';

        if ( $newIns['number'] < 1 )
            $newIns['number'] = 1;
        elseif ( $newIns['number'] > 50 )
            $newIns['number'] = 50;

        $instance = $oldIns;
        $instance['title'] = $newIns['title'];
        $instance['number'] = (int) $newIns['number'];
        $instance['thumbs'] = $newIns['thumbs'];
        $instance['category'] = $newIns['category'];
        $instance = $this->updateWidgetDisplayOptions($instance, $newIns);
        $this->flushWidgetCache();
        return $instance;
    }

    /**
     * Display widget settings controls on the widget panel.
     */
    public function form ($instance)
    {
        $instance = $this->setDefalutValues( $instance );
        $checkedThumbs = $instance['thumbs'] == 'yes' ? TRUE : FALSE;

        $cat_dropdown = wp_dropdown_categories(array(
            'show_option_none' => __('-- All categories --', 'mw_frm'),
            'echo'         => 0,
            'orderby'      => 'name',
            'hide_empty'   => 0,
            'hierarchical' => 1,
            'selected'     => $instance['category'],
            'name'         => $this->fnm('category'),
            'id'           => $this->fid('category'),
            'class'        => 'widefat',
            'taxonomy'     => 'category'
        ));

        $html  = '<p>';
        $html .= form_label(__('Title:', 'mw_frm'), $this->fid('title'), NULL, TRUE);
        $html .= form_input($this->fnm('title'), $instance['title'], array('id'=>$this->fid('title'), 'class'=>'widefat'), TRUE);
        $html .= '</p><p>';
        $html .= form_label(__('Select category:', 'mw_frm'), $this->fid('wp_page'), NULL, TRUE);
        $html .= $cat_dropdown;
        $html .= '</p><p>';
        $html .= form_label(__('Number of posts to show:', 'mw_frm'), $this->fid('number'), NULL, TRUE) . ' ';
        $html .= form_input($this->fnm('number'), $instance['number'], array('id'=>$this->fid('number'), 'size'=>'3'), TRUE);
        $html .= '</p><p>';
        $html .= form_checkbox_labeled($this->fnm('thumbs'), 'yes', __('Show thumbnails', 'mw_frm'), $this->fid('thumbs'), $checkedThumbs, NULL, TRUE);
        $html .= '</p>';
        $html .= $this->widgetDisplayOptionsForm($instance);
        $this->outputWidgetControl($html);
    }
}