Goal Tracker

enqueue-list-style.php

add_action( 'admin_enqueue_scripts', 'gt_post_list_style' );
function gt_post_list_style() {
	$screen = get_current_screen();
	if( 'edit-post' == $screen->id ) {
		wp_enqueue_style( 'gt-post-list-style', get_stylesheet_directory_uri() . '/post-list.css' );
	}
}

functions.php

<?php

add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
function theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );

}

get-field.php

$glasses = get_field( 'glasses_today', 3727 );
if( !empty( $glasses ) ) {
	echo "<span class='glasses'>".$glasses." glasses</span>";
}

get_habit_status.php

function get_habit_status() {
	global $post;
	$habit_status = get_category_by_slug( 'habit-status' );
	
	if( empty( $habit_status ) ) {
		return false;
	}

	$habit_statuses = get_categories(array(
		"child_of" => $habit_status->term_id
	));

	if( empty( $habit_statuses ) ) {
		return false;
	}

	$habit_status_ids = array();
	$habit_list = array();

	foreach( $habit_statuses as $status ) {
		$habit_list[$status->term_id] = $status;
		$habit_status_ids[] = $status->term_id;
	}

	$categories = wp_get_post_categories( $post->ID );

	if( empty( $categories ) ) {
		return false;
	}

	$shared = array_intersect( $categories, $habit_status_ids );

	if( empty( $shared ) ) {
		return false;
	}

	$status_id = array_shift( $shared );


	return $habit_list[$status_id];
	
}

glasses.css

.glasses {
	margin-right:1em;
}

habit-status-display.php

$habit_status = get_habit_status();
if( !empty( $habit_status ) ) {
	echo "<span class='habit-status-indicator " . $habit_status->slug . "'></span>";
}

habit-status.css

.habit-status-indicator {
	display:inline-block;
	width:20px;
	height:20px;
	border-radius:40px;
	position:absolute;
	left:2.5%;
}

.habit-status-indicator.complete {
	background: #3eeb4e;
}

.habit-status-indicator.incomplete {
	background: #e66e6e;
}

post-list.css

.fixed .column-categories {
	width: 30%;
}

register-widget.php

include( "gt-stats.class.php" );
add_action( 'widgets_init', 'gt_stat_widget_init' );
function gt_stat_widget_init() {
    register_widget( 'GT_Stats' );
}

remove-columns.php

add_filter('manage_post_posts_columns', 'gt_post_columns');
function gt_post_columns( $defaults ) {
    $defaults['habit_status']  = 'Habit Status';
    unset( $defaults['author'], $defaults['tags'], $defaults['comments'] );
    return $defaults;
}

remove-habit-status.php

add_filter( 'the_category_list', 'gt_category_filter', 10, 2 );
function gt_category_filter( $categories, $post_id ) {
	$habit_status = get_category_by_slug( 'habit-status' );
	if( !empty( $habit_status ) ) {
		foreach( $categories as $i => $category ) {
			if( $category->parent == $habit_status->term_id ) {
				unset( $categories[$i] );
			}
		}
	}
	return $categories;
}

style.css

/*
 Theme Name:   Goal Tracker
 Theme URI:    http://danielpataki.com
 Description:  A little goal tracking application built in WordPress. A child theme of Twenty Fifteen.
 Author:       Daniel Pataki
 Author URI:   http://danielpataki.com
 Template:     twentyfifteen
 Version:      1.0.0
 License:      GNU General Public License v2 or later
 License URI:  http://www.gnu.org/licenses/gpl-2.0.html
 Text Domain:  twentysixteen-chirstmas-edition
*/

twentyfifteen_entry_meta.php

function twentyfifteen_entry_meta() {
	if ( is_sticky() && is_home() && ! is_paged() ) {
		printf( '<span class="sticky-post">%s</span>', __( 'Featured', 'twentyfifteen' ) );
	}

	$format = get_post_format();
	if ( current_theme_supports( 'post-formats', $format ) ) {
		printf( '<span class="entry-format">%1$s<a href="%2$s">%3$s</a></span>',
			sprintf( '<span class="screen-reader-text">%s </span>', _x( 'Format', 'Used before post format.', 'twentyfifteen' ) ),
			esc_url( get_post_format_link( $format ) ),
			get_post_format_string( $format )
		);
	}

	if ( in_array( get_post_type(), array( 'post', 'attachment' ) ) ) {
		$time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';

		if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
			$time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
		}

		$time_string = sprintf( $time_string,
			esc_attr( get_the_date( 'c' ) ),
			get_the_date(),
			esc_attr( get_the_modified_date( 'c' ) ),
			get_the_modified_date()
		);

		printf( '<span class="posted-on"><span class="screen-reader-text">%1$s </span><a href="%2$s" rel="bookmark">%3$s</a></span>',
			_x( 'Posted on', 'Used before publish date.', 'twentyfifteen' ),
			esc_url( get_permalink() ),
			$time_string
		);
	}

	if ( 'post' == get_post_type() ) {
		if ( is_singular() || is_multi_author() ) {
			printf( '<span class="byline"><span class="author vcard"><span class="screen-reader-text">%1$s </span><a class="url fn n" href="%2$s">%3$s</a></span></span>',
				_x( 'Author', 'Used before post author name.', 'twentyfifteen' ),
				esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
				get_the_author()
			);
		}

		$categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
		if ( $categories_list && twentyfifteen_categorized_blog() ) {
			printf( '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
				_x( 'Categories', 'Used before category names.', 'twentyfifteen' ),
				$categories_list
			);
		}

		$tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
		if ( $tags_list ) {
			printf( '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
				_x( 'Tags', 'Used before tag names.', 'twentyfifteen' ),
				$tags_list
			);
		}
	}

	if ( is_attachment() && wp_attachment_is_image() ) {
		// Retrieve attachment metadata.
		$metadata = wp_get_attachment_metadata();

		printf( '<span class="full-size-link"><span class="screen-reader-text">%1$s </span><a href="%2$s">%3$s &times; %4$s</a></span>',
			_x( 'Full size', 'Used before full size attachment link.', 'twentyfifteen' ),
			esc_url( wp_get_attachment_url() ),
			$metadata['width'],
			$metadata['height']
		);
	}

}

widget-basics.php

<?php

 
class GT_Stats extends WP_Widget
{
 
    public function __construct()
    {
        $widget_details = array(
            'classname' => 'gt_stats',
            'description' => 'A small statistics widget for my goals'
        );
 
        parent::__construct( 'gt_stats', 'Goal Stats', $widget_details );
 
    }
 
  
    public function form( $instance ) {

    }

    public function widget( $args, $instance ) {

    }
 
}

widget.php

class GT_Stats extends WP_Widget
{
 
    public function __construct()
    {
        $widget_details = array(
            'classname' => 'gt_stats',
            'description' => 'A small statistics widget for my goals'
        );
 
        parent::__construct( 'gt_stats', 'Goal Stats', $widget_details );
 
    }
 
  
    public function form( $instance ) {
        $title = '';
        if( !empty( $instance['title'] ) ) {
            $title = $instance['title'];
        }

        ?>

            <p>
                <label for="<?php echo $this->get_field_name( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
                <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" />
            </p>

        <?php
    }

    public function widget( $args, $instance ) {
        $habit_status = get_category_by_slug( 'habit-status' );
    
        if( empty( $habit_status ) ) {
            return false;
        }

        $habit_statuses = get_categories(array(
            "child_of" => $habit_status->term_id
        ));

        if( !empty( $habit_statuses ) ) {

            echo $args['before_widget'];

            echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ) . $args['after_title'];

            echo "<ul>";
            foreach( $habit_statuses as $status ) {
                echo "<li>" . $status->name . ": " . $status->count . "</li>";
            }
            echo "</ul>";

            echo $args['after_widget'];

        }

    }
 
}