| 1 |
<?php |
| 2 |
|
| 3 |
class M_Chart_Highcharts { |
| 4 |
public $library = 'highcharts'; |
| 5 |
public $value_labels_limit = 15; |
| 6 |
public $value_labels_div = 10; |
| 7 |
public $original_labels; |
| 8 |
public $post; |
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public $post_meta; |
| 10 |
public $args; |
| 11 |
public $type_options = array( |
| 12 |
'line', |
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'spline', |
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'area', |
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'column', |
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'bar', |
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'pie', |
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); |
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public $theme_directories; |
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|
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/** |
| 22 |
* Constructor |
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*/ |
| 24 |
public function __construct() { |
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add_action( 'm_chart_update_post_meta', array( $this, 'm_chart_update_post_meta' ), 10, 2 ); |
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|
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$this->theme_directories = array( |
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get_stylesheet_directory() . '/m-chart-highcharts-themes/', // Child theme |
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get_template_directory() . '/m-chart-highcharts-themes/', // Parent theme |
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__DIR__ . '/highcharts-themes/', |
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); |
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} |
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|
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/** |
| 35 |
* Get the necessary chart data for a given chart and assign it the right class vars |
| 36 |
* |
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* @param int $post_id the WP ID for the chart post |
| 38 |
* @param array $args any args we want to override the defaults for |
| 39 |
*/ |
| 40 |
public function get_chart_data( $post_id, $args ) { |
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$this->args = wp_parse_args( $args, m_chart()->get_chart_default_args ); |
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$this->post = get_post( $post_id ); |
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$this->post_meta = m_chart()->get_post_meta( $this->post->ID ); |
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} |
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|
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/** |
| 47 |
* Get the chart options |
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* |
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* @return array an array of Highcharts wide options we want to set |
| 50 |
*/ |
| 51 |
public function get_chart_options() { |
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$chart_options = array( |
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'lang' => array( |
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'numericSymbols' => array( |
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/* Thousands */ |
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'K', |
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/* Millions */ |
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'M', |
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/* Billions */ |
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'B', |
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/* Trillions */ |
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'T', |
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), |
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'thousandsSep' => array( |
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',', |
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), |
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), |
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); |
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|
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return apply_filters( 'm_chart_chart_options', $chart_options, $this->library ); |
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} |
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|
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/** |
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* Returns an arary of all settings and data needed to build a chart |
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* |
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* @param int $post_id WP post ID of the post you want chart args for |
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* @param array $args any args we want to override the defaults for |
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* @param bool $force optional param to force a rebuild of the data even if a cache was found |
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* @param bool $cache optional param to override the default behavior to cache the results |
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* |
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* @return string URL to the plugin directory with path if parameter was passed |
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*/ |
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public function get_chart_args( $post_id, $args, $force = false, $cache = true ) { |
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// There's a ton of work that goes into generating the chart args so we cache them |
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$cache_key = $post_id . '-chart-args'; |
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|
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if ( ! $force && $chart_args = wp_cache_get( $cache_key, m_chart()->slug ) ) { |
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// The width can be set via the args so we'll override whatever the cache has with the arg value |
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$chart_args['graph']['width'] = is_numeric( $this->args['width'] ) ? $this->args['width'] : ''; |
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return $chart_args; |
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} |
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|
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if ( ! $this->args || ! $this->post || ! $this->post_meta ) { |
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$this->get_chart_data( $post_id, $args ); |
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} |
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|
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// Run the parse class on the data |
| 98 |
m_chart()->parse()->parse_data( $this->post_meta['data'], $this->post_meta['parse_in'] ); |
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|
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$chart_args = array( |
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'chart' => array( |
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'type' => $this->post_meta['type'], |
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'show_labels' => $this->post_meta['labels'] ? true : false, |
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'renderTo' => 'm-chart-' . $this->post->ID, |
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'height' => $this->post_meta['height'], |
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), |
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'title' => array( |
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'text' => $this->esc_title( apply_filters( 'the_title', $this->post->post_title ) ), |
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), |
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'subtitle' => array( |
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'text' => $this->esc_title( $this->post_meta['subtitle'] ), |
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), |
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'legend' => array( |
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'enabled' => $this->post_meta['legend'] ? true : false, |
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), |
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'credits' => array( |
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'href' => $this->post_meta['source_url'], |
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'text' => $this->post_meta['source'], |
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), |
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'exporting' => array( |
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'enabled' => false, |
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), |
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'plotOptions' => array( |
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'series' => array( |
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'dataLabels' => array( |
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'enabled' => $this->post_meta['labels'] ? true : false, |
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), |
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'connectNulls' => true, |
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), |
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$this->post_meta['type'] => array( |
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'dataLabels' => array( |
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'enabled' => $this->post_meta['labels'] ? true : false, |
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), |
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), |
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), |
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); |
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|
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// We don't want to set a width unless an explicit width was given |
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if ( is_numeric( $this->args['width'] ) ) { |
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$chart_args['chart']['width'] = $this->args['width']; |
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} |
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|
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// Forcing a minimum value of 0 prevents the built in fudging which sometimes looks weird |
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if ( $this->post_meta['y_min'] ) { |
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$chart_args['yAxis']['min'] = 0; |
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} |
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|
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// The x axis values need to be set or else you end up with a single notch :P |
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$chart_args['xAxis']['categories'] = $this->get_value_labels_array(); |
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|
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$chart_args = $this->add_axis_labels( $chart_args ); |
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$chart_args = $this->add_data_sets( $chart_args ); |
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|
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// Add prefix/suffix if appropriate |
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if ( '' != m_chart()->parse()->data_prefix ) { |
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$chart_args['tooltip']['valuePrefix'] = m_chart()->parse()->data_prefix; |
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} |
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|
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if ( '' != m_chart()->parse()->data_suffix ) { |
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$chart_args['tooltip']['valueSuffix'] = m_chart()->parse()->data_suffix; |
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} |
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|
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$chart_args['plotOptions']['series']['dataLabels']['format'] = m_chart()->parse()->data_prefix . '{y:,f}' . m_chart()->parse()->data_suffix; |
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|
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// Apply the theme |
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if ( $theme = $this->get_theme( $this->post_meta['theme'] ) ) { |
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$chart_args = array_merge( $chart_args, $theme ); |
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} |
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|
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$chart_args = apply_filters( 'm_chart_chart_args', $chart_args, $this->post, $this->post_meta, $this->args ); |
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|
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// Set the cache, we'll regenerate this when someone updates the post |
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if ( $cache ) { |
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wp_cache_set( $cache_key, $chart_args, m_chart()->slug ); |
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} |
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|
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// Clear out all of the class vars so the next chart instance starts fresh |
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unset( $this->args, $this->post, $this->post_meta ); |
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|
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return $chart_args; |
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} |
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|
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/** |
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* Hook to the m_chart_update_post_meta action and refresh the chart args cache |
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* |
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* @param int $post_id WP post ID of the post you want chart args for |
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* @param array $parsed_meta the parsed chart meta passed by the action hook |
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*/ |
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public function m_chart_update_post_meta( $post_id, $parsed_meta ) { |
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// Refresh arg cache |
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$this->args = $this->get_chart_default_args; |
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$this->post = (object) array( |
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'ID' => $post_id, |
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); |
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$this->post_meta = $parsed_meta; |
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|
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$this->get_chart_args( $post_id, array(), true ); |
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} |
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|
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/** |
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* Returns the value labels array |
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* |
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* @return array an array of the value labels need for the active chart |
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*/ |
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|
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public function get_value_labels_array() { |
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$value_labels = m_chart()->parse()->value_labels; |
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|
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if ( isset( $value_labels['first_column'] ) ) { |
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$label_key = 'rows' == $this->post_meta['parse_in'] ? 'first_row' : 'first_column'; |
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|
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return $value_labels[ $label_key ]; |
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} |
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|
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return $value_labels; |
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} |
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|
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/** |
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* Handle adding units to axis labels and/or flipping axis labels on bar chart |
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* |
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* @param array the current array of chart args |
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* |
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* @return array the chart args array with axis labels (and units) added to it |
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*/ |
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public function add_axis_labels( $chart_args ) { |
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$chart_args['xAxis']['title']['text'] = $this->esc_title( $this->post_meta['x_title'] ); |
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|
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// We've got x axis units so we'll add them to the axis label |
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if ( '' != $this->post_meta['x_units'] ) { |
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$units = get_term_by( 'slug', $this->post_meta['x_units'], m_chart()->slug . '-units' ); |
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$x_units = '' != $this->post_meta['x_title'] ? ' (' . $units->name . ')' : $units->name; |
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|
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$chart_args['xAxis']['title']['text'] .= $x_units; |
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} |
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|
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$chart_args['yAxis']['title']['text'] = $this->esc_title( $this->post_meta['y_title'] ); |
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|
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// We've got y axis units so we'll add them to the axis label |
| 239 |
if ( $this->post_meta['y_units'] != '' ) { |
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$units = get_term_by( 'slug', $this->post_meta['y_units'], m_chart()->slug . '-units' ); |
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$y_units = '' != $this->post_meta['y_title'] ? ' (' . $units->name . ')' : $units->name; |
| 242 |
|
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$chart_args['yAxis']['title']['text'] .= $y_units; |
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} |
| 245 |
|
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// Bar charts are just rotated column charts in Highcharts so we flip things around to keep the UI consistent |
| 247 |
if ( 'bar' == $this->post_meta['type'] ) { |
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$x_title = $chart_args['xAxis']['title']['text']; |
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|
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$chart_args['xAxis']['title']['text'] = $chart_args['yAxis']['title']['text']; |
| 251 |
$chart_args['yAxis']['title']['text'] = $x_title; |
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} |
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|
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return $chart_args; |
| 255 |
} |
| 256 |
|
| 257 |
/** |
| 258 |
* Handle adding data sets (series in Highcharts terminology) to the chart args |
| 259 |
* |
| 260 |
* @param array the current array of chart args |
| 261 |
* |
| 262 |
* @return array the chart args array with data sets added to it |
| 263 |
*/ |
| 264 |
public function add_data_sets( $chart_args ) { |
| 265 |
// When Highcharts encounters an empty data value it stops so we set them to NULL |
| 266 |
$data_array = array_map( array( $this, 'fix_null_values' ), m_chart()->parse()->set_data ); |
| 267 |
|
| 268 |
if ( 'pie' != $this->post_meta['type'] && 'both' == m_chart()->parse()->value_labels_position ) { |
| 269 |
$set_data = array(); |
| 270 |
|
| 271 |
$label_key = ( $this->post_meta['parse_in'] == 'rows' ) ? 'first_column' : 'first_row'; |
| 272 |
|
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foreach ( $data_array as $key => $data_chunk ) { |
| 274 |
$set_data[ $key ] = array( |
| 275 |
'name' => m_chart()->parse()->value_labels[ $label_key ][ $key ], |
| 276 |
'data' => array(), |
| 277 |
); |
| 278 |
|
| 279 |
foreach ( $data_chunk as $data ) { |
| 280 |
$set_data[ $key ]['data'][] = $data; |
| 281 |
} |
| 282 |
} |
| 283 |
|
| 284 |
$chart_args['series'] = $set_data; |
| 285 |
} |
| 286 |
else |
| 287 |
{ |
| 288 |
$new_data_array = array(); |
| 289 |
|
| 290 |
foreach ( $chart_args['xAxis']['categories'] as $key => $label ) { |
| 291 |
$new_data_array[ $key ] = array( |
| 292 |
$label, |
| 293 |
$data_array[ $key ], |
| 294 |
); |
| 295 |
} |
| 296 |
|
| 297 |
if ( 'pie' == $this->post_meta['type'] ) { |
| 298 |
// Don't need these anymore for pie charts |
| 299 |
unset( $chart_args['xAxis']['categories'] ); |
| 300 |
} |
| 301 |
|
| 302 |
$chart_args['series'] = array( |
| 303 |
array( |
| 304 |
'type' => $this->post_meta['type'], |
| 305 |
'showInLegend' => true, |
| 306 |
'data' => $new_data_array, |
| 307 |
), |
| 308 |
); |
| 309 |
|
| 310 |
$chart_args['tooltip'] = array( |
| 311 |
'pointFormat' => '<b>{point.y}</b>', |
| 312 |
); |
| 313 |
} |
| 314 |
|
| 315 |
return $chart_args; |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Helper function escapes and modifies text/title values so they work in Highcharts |
| 320 |
* |
| 321 |
* @param string an string you want to use in Highcharts |
| 322 |
* |
| 323 |
* @return string an escaped and modified string |
| 324 |
*/ |
| 325 |
public function esc_title( $string ) { |
| 326 |
$string = html_entity_decode( $string, ENT_QUOTES ); |
| 327 |
|
| 328 |
$find = array( |
| 329 |
"\n", |
| 330 |
"\r", |
| 331 |
'<br><br>', |
| 332 |
'—', |
| 333 |
'–', |
| 334 |
); |
| 335 |
|
| 336 |
$replace = array( |
| 337 |
'<br />', |
| 338 |
'<br />', |
| 339 |
'<br />', |
| 340 |
'-', |
| 341 |
'-', |
| 342 |
); |
| 343 |
|
| 344 |
$string = str_replace( $find, $replace, $string ); |
| 345 |
|
| 346 |
// @TODO: See if this addslashes/stripslashes is still necessary (need to remember why I did it first...) |
| 347 |
return addslashes( stripslashes( $string ) ); |
| 348 |
} |
| 349 |
|
| 350 |
/** |
| 351 |
* Helper function sets empty values to NULL so that Highcharts handles them correctly. |
| 352 |
* |
| 353 |
* @param string/int a data value |
| 354 |
* |
| 355 |
* @return int/null the integer value or NULL if the value was not numeric |
| 356 |
*/ |
| 357 |
public function fix_null_values( $value ) { |
| 358 |
if ( is_array( $value ) ) { |
| 359 |
return array_map( array( $this, 'fix_null_values' ), $value ); |
| 360 |
} |
| 361 |
|
| 362 |
if ( ! is_numeric( $value ) ) { |
| 363 |
return null; |
| 364 |
} |
| 365 |
|
| 366 |
return $value; |
| 367 |
} |
| 368 |
|
| 369 |
public function get_themes() { |
| 370 |
$themes = array(); |
| 371 |
|
| 372 |
foreach ( $this->theme_directories as $directory ) { |
| 373 |
$themes = array_merge( $themes, $this->_get_themes_readdir( $directory ) ); |
| 374 |
} |
| 375 |
|
| 376 |
return $themes; |
| 377 |
} |
| 378 |
|
| 379 |
private function get_theme( $slug ) { |
| 380 |
foreach ( $this->theme_directories as $directory ) { |
| 381 |
if ( ! $themes = $this->_get_themes_readdir( $directory ) ) { |
| 382 |
continue; |
| 383 |
} // END if |
| 384 |
|
| 385 |
foreach ( $themes as $theme ) |
| 386 |
{ |
| 387 |
if ( $theme->slug == $slug ) |
| 388 |
{ |
| 389 |
return $theme->options; |
| 390 |
} // END if |
| 391 |
} // END foreach |
| 392 |
} // END foreach |
| 393 |
|
| 394 |
return false; |
| 395 |
} |
| 396 |
|
| 397 |
private function _get_themes_readdir( $theme_base ) { |
| 398 |
// Sanity check to make sure we have a real directory |
| 399 |
if ( ! is_dir( $theme_base ) ) { |
| 400 |
return array(); |
| 401 |
} |
| 402 |
|
| 403 |
$theme_dir = new DirectoryIterator( $theme_base ); |
| 404 |
$themes = array(); |
| 405 |
|
| 406 |
foreach ( $theme_dir as $file ) { |
| 407 |
if ( ! $file->isFile() || 'php' != $file->getExtension() ) { |
| 408 |
continue; |
| 409 |
} |
| 410 |
|
| 411 |
$theme_data = implode( '', file( $theme_base . $file ) ); |
| 412 |
|
| 413 |
if ( preg_match( '|Theme Name:(.*)$|mi', $theme_data, $name ) ) { |
| 414 |
$name = trim( _cleanup_header_comment( $name[1] ) ); |
| 415 |
} // END if |
| 416 |
|
| 417 |
if ( isset( $name ) && '' != $name ) |
| 418 |
{ |
| 419 |
$file = basename( $file ); |
| 420 |
|
| 421 |
$themes[ $file ] = (object) array( |
| 422 |
'name' => $name, |
| 423 |
'slug' => substr( $file, 0, -4 ), |
| 424 |
'file' => $file, |
| 425 |
'options' => require $theme_base . $file, |
| 426 |
); |
| 427 |
} // END if |
| 428 |
} // END foreach |
| 429 |
|
| 430 |
return $themes; |
| 431 |
} |
| 432 |
} |
