File: /home/p/e/r/perditaeyz/www/wp-content/plugins/my-calendar/my-calendar-styles.php
<?php
/**
* Manage My Calendar styles.
*
* @category Core
* @package My Calendar
* @author Joe Dolson
* @license GPLv2 or later
* @link https://www.joedolson.com/my-calendar/
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Generate stylesheet editor
*/
function my_calendar_style_edit() {
$edit_files = true;
if ( defined( 'DISALLOW_FILE_EDIT' ) && DISALLOW_FILE_EDIT === true ) {
$edit_files = false;
mc_show_error( __( 'File editing is disallowed in your WordPress installation. Edit your stylesheets offline.', 'my-calendar' ) );
}
if ( isset( $_POST['mc_edit_style'] ) ) {
$nonce = $_REQUEST['_wpnonce'];
if ( ! wp_verify_nonce( $nonce, 'my-calendar-nonce' ) ) {
die( 'Security check failed' );
}
$my_calendar_style = ( isset( $_POST['style'] ) ) ? stripcslashes( $_POST['style'] ) : false;
$mc_css_file = stripcslashes( $_POST['mc_css_file'] );
if ( $edit_files ) {
$stylefile = mc_get_style_path( $mc_css_file );
$wrote_styles = ( false !== $my_calendar_style ) ? mc_write_styles( $stylefile, $my_calendar_style ) : 'disabled';
} else {
$wrote_styles = false;
}
if ( 'disabled' === $wrote_styles ) {
$message = '<p>' . __( 'Styles are disabled, and were not edited.', 'my-calendar' ) . '</p>';
} else {
$message = ( true === $wrote_styles ) ? '<p>' . __( 'The stylesheet has been updated.', 'my-calendar' ) . '</p>' : '<p><strong>' . __( 'Write Error! Please verify write permissions on the style file.', 'my-calendar' ) . '</strong></p>';
}
$mc_show_css = ( empty( $_POST['mc_show_css'] ) ) ? '' : stripcslashes( $_POST['mc_show_css'] );
update_option( 'mc_show_css', $mc_show_css );
$use_styles = ( empty( $_POST['use_styles'] ) ) ? '' : 'true';
update_option( 'mc_use_styles', $use_styles );
if ( ! empty( $_POST['reset_styles'] ) ) {
$stylefile = mc_get_style_path();
$styles = mc_default_style();
$wrote_old_styles = mc_write_styles( $stylefile, $styles );
if ( $wrote_old_styles ) {
$message .= '<p>' . __( 'Stylesheet reset to default.', 'my-calendar' ) . '</p>';
}
}
if ( ! empty( $_POST['style_vars'] ) ) {
$styles = get_option( 'mc_style_vars' );
if ( isset( $_POST['new_style_var'] ) ) {
$key = $_POST['new_style_var']['key'];
$val = $_POST['new_style_var']['val'];
if ( $key && $val ) {
if ( 0 !== strpos( $key, '--' ) ) {
$key = '--' . $key;
}
$styles[ $key ] = $val;
}
}
foreach ( $_POST['style_vars'] as $key => $value ) {
if ( '' !== trim( $value ) ) {
$styles[ $key ] = $value;
}
}
if ( isset( $_POST['delete_var'] ) ) {
$delete = $_POST['delete_var'];
unset( $styles[ $delete ] );
}
update_option( 'mc_style_vars', $styles );
}
$message .= '<p><strong>' . __( 'Style Settings Saved', 'my-calendar' ) . '.</strong></p>';
echo "<div id='message' class='updated fade'>$message</div>";
}
if ( isset( $_POST['mc_choose_style'] ) ) {
$nonce = $_REQUEST['_wpnonce'];
if ( ! wp_verify_nonce( $nonce, 'my-calendar-nonce' ) ) {
die( 'Security check failed' );
}
$mc_css_file = stripcslashes( $_POST['mc_css_file'] );
update_option( 'mc_css_file', $mc_css_file );
$message = '<p><strong>' . __( 'New theme selected.', 'my-calendar' ) . '</strong></p>';
echo "<div id='message' class='updated fade'>$message</div>";
}
$mc_show_css = get_option( 'mc_show_css' );
$stylefile = mc_get_style_path();
if ( $stylefile ) {
$f = fopen( $stylefile, 'r' );
$size = ( 0 === filesize( $stylefile ) ) ? 1 : filesize( $stylefile );
$file = fread( $f, $size );
$my_calendar_style = $file;
fclose( $f );
$mc_current_style = mc_default_style();
} else {
$mc_current_style = '';
$my_calendar_style = __( 'Sorry. The file you are looking for doesn\'t appear to exist. Please check your file name and location!', 'my-calendar' );
}
?>
<div class="wrap my-calendar-admin">
<h1><?php _e( 'My Calendar Styles', 'my-calendar' ); ?></h1>
<div class="postbox-container jcd-wide">
<div class="metabox-holder">
<div class="ui-sortable meta-box-sortables">
<div class="postbox">
<h2><?php _e( 'Calendar Style Settings', 'my-calendar' ); ?></h2>
<div class="inside">
<form method="post" action="<?php echo admin_url( 'admin.php?page=my-calendar-styles' ); ?>">
<input type="hidden" name="_wpnonce" value="<?php echo wp_create_nonce( 'my-calendar-nonce' ); ?>"/>
<input type="hidden" value="true" name="mc_edit_style"/>
<input type="hidden" name="mc_css_file" value="<?php echo esc_attr( get_option( 'mc_css_file' ) ); ?>"/>
<fieldset style="position:relative;">
<legend><?php _e( 'CSS Style Options', 'my-calendar' ); ?></legend>
<p>
<label for="mc_show_css"><?php _e( 'Apply CSS on these pages (comma separated IDs)', 'my-calendar' ); ?></label>
<input type="text" id="mc_show_css" name="mc_show_css" value="<?php echo esc_attr( $mc_show_css ); ?>" />
</p>
<p>
<input type="checkbox" id="reset_styles" name="reset_styles" <?php echo ( mc_is_custom_style( get_option( 'mc_css_file' ) ) ) ? "disabled='disabled'" : ''; ?> /> <label for="reset_styles"><?php _e( 'Reset to default', 'my-calendar' ); ?></label>
<input type="checkbox" id="use_styles" name="use_styles" <?php mc_is_checked( 'mc_use_styles', 'true' ); ?> />
<label for="use_styles"><?php _e( 'Disable My Calendar Stylesheet', 'my-calendar' ); ?></label>
</p>
<p>
<?php
if ( mc_is_custom_style( get_option( 'mc_css_file' ) ) ) {
_e( 'The editor is not available for custom CSS files. Edit your custom CSS locally, then upload your changes.', 'my-calendar' );
} else {
$disabled = ( $edit_files || get_option( 'mc_use_styles' ) === 'true' ) ? '' : ' disabled="disabled"';
?>
<label for="style"><?php _e( 'Edit the stylesheet for My Calendar', 'my-calendar' ); ?></label><br/><textarea <?php echo $disabled; ?> class="style-editor" id="style" name="style" rows="30" cols="80"><?php echo $my_calendar_style; ?></textarea>
<?php
}
?>
</p>
<fieldset>
<legend><?php _e( 'CSS Variables', 'my-calendar' ); ?></legend>
<?php
$output = '';
$styles = get_option( 'mc_style_vars' );
foreach ( $styles as $var => $style ) {
$var_id = 'mc' . sanitize_key( $var );
if ( ! in_array( $var, array( '--primary-dark', '--primary-light', '--secondary-light', '--secondary-dark', '--highlight-dark', '--highlight-light' ), true ) ) {
$delete = " <input type='checkbox' id='delete_var_$var_id' name='delete_var' value='" . esc_attr( $var ) . "' /><label for='delete_var_$var_id'>" . __( 'Delete', 'my-calendar' ) . '</label>';
} else {
$delete = '';
}
$output .= "<li><label for='$var_id'>" . esc_html( $var ) . "</label> <input type='text' id='$var_id' name='style_vars[$var]' value='" . esc_attr( $style ) . "' /><span aria-hidden='true' class='variable-color' style='background-color: " . esc_attr( $style ) . "'></span>$delete</li>";
}
if ( $output ) {
echo "<ul class='checkboxes'>$output</ul>";
}
?>
<p>
<label for='new_style_var_key'><?php _e( 'New variable:', 'my-calendar' ); ?></label>
<input type='text' name='new_style_var[key]' id='new_style_var_key' /> <label for='new_style_var_val'><?php _e( 'Value:', 'my-calendar' ); ?></label>
<input type='text' name='new_style_var[val]' id='new_style_var_val' />
</p>
</fieldset>
<p>
<input type="submit" name="save" class="button-primary button-adjust" value="<?php _e( 'Save Changes', 'my-calendar' ); ?>" />
</p>
</fieldset>
</form>
<?php
$left_string = normalize_whitespace( $my_calendar_style );
$right_string = normalize_whitespace( $mc_current_style );
if ( $right_string ) { // If right string is blank, there is no default.
if ( isset( $_GET['diff'] ) ) {
echo '<div class="wrap my-calendar-admin" id="diff">';
echo mc_text_diff(
$left_string,
$right_string,
array(
'title' => __( 'Comparing Your Style with latest installed version of My Calendar', 'my-calendar' ),
'title_right' => __( 'Latest (from plugin)', 'my-calendar' ),
'title_left' => __( 'Current (in use)', 'my-calendar' ),
)
);
echo '</div>';
} elseif ( trim( $left_string ) !== trim( $right_string ) ) {
echo '<div class="wrap my-calendar-admin">';
mc_show_notice( __( 'There have been updates to the stylesheet.', 'my-calendar' ) . ' <a href="' . admin_url( 'admin.php?page=my-calendar-styles&diff#diff' ) . '">' . __( 'Compare Your Stylesheet with latest installed version of My Calendar.', 'my-calendar' ) . '</a>' );
echo '</div>';
} else {
echo '
<div class="wrap my-calendar-admin">
<p>' . __( 'Your stylesheet matches that included with My Calendar.', 'my-calendar' ) . '</p>
</div>';
}
}
?>
</div>
</div>
<p><?php _e( 'Resetting your stylesheet will set your stylesheet to the version currently distributed with the plug-in.', 'my-calendar' ); ?></p>
</div>
</div>
</div>
<?php
$selector = mc_stylesheet_selector();
mc_show_sidebar( '', $selector );
?>
</div>
<?php
}
/**
* Display stylesheet selector as added component in sidebar.
*
* @return string
*/
function mc_stylesheet_selector() {
$dir = plugin_dir_path( __FILE__ );
$options = '';
$return = '
<form method="post" action="' . admin_url( 'admin.php?page=my-calendar-styles' ) . '">
<div><input type="hidden" name="_wpnonce" value="' . wp_create_nonce( 'my-calendar-nonce' ) . '"/></div>
<div><input type="hidden" value="true" name="mc_choose_style"/></div>';
$custom_directory = str_replace( '/my-calendar/', '', $dir ) . '/my-calendar-custom/styles/';
$directory = dirname( __FILE__ ) . '/styles/';
$files = mc_css_list( $custom_directory );
if ( ! empty( $files ) ) {
$options .= '<optgroup label="' . __( 'Your Custom Stylesheets', 'my-calendar' ) . '">';
foreach ( $files as $value ) {
$test = 'mc_custom_' . $value;
$filepath = mc_get_style_path( $test );
$path = pathinfo( $filepath );
if ( 'css' === $path['extension'] ) {
$selected = ( get_option( 'mc_css_file' ) === $test ) ? ' selected="selected"' : '';
$options .= "<option value='mc_custom_$value'$selected>$value</option>\n";
}
}
$options .= '</optgroup>';
}
$files = mc_css_list( $directory );
$options .= '<optgroup label="' . __( 'Installed Stylesheets', 'my-calendar' ) . '">';
foreach ( $files as $value ) {
$filepath = mc_get_style_path( $value );
$path = pathinfo( $filepath );
if ( 'css' === $path['extension'] ) {
$selected = ( get_option( 'mc_css_file' ) === $value ) ? ' selected="selected"' : '';
$options .= "<option value='$value'$selected>$value</option>\n";
}
}
$options .= '</optgroup>';
$return .= '
<fieldset>
<p>
<label for="mc_css_file">' . __( 'Select My Calendar Theme', 'my-calendar' ) . '</label>
<select name="mc_css_file" id="mc_css_file">' . $options . '</select>
</p>
<p>
<input type="submit" name="save" class="button-primary" value="' . __( 'Choose Style', 'my-calendar' ) . '"/>
</p>
</fieldset>
</form>';
return array( __( 'Select Stylesheet', 'my-calendar' ) => $return );
}
/**
* Get path for given filename or current selected stylesheet.
*
* @param string $filename File name.
* @param string $type path or url.
*
* @return mixed string/boolean
*/
function mc_get_style_path( $filename = false, $type = 'path' ) {
$url = plugin_dir_url( __FILE__ );
$dir = plugin_dir_path( __FILE__ );
if ( ! $filename ) {
$filename = get_option( 'mc_css_file' );
}
if ( ! $filename ) {
// If no value is saved, return default.
$filename = 'twentytwenty.css';
}
if ( 0 === strpos( $filename, 'mc_custom_' ) ) {
$filename = str_replace( 'mc_custom_', '', $filename );
$stylefile = ( 'path' === $type ) ? str_replace( '/my-calendar/', '', $dir ) . '/my-calendar-custom/styles/' . $filename : str_replace( '/my-calendar/', '', $url ) . '/my-calendar-custom/styles/' . $filename;
} else {
$stylefile = ( 'path' === $type ) ? dirname( __FILE__ ) . '/styles/' . $filename : plugins_url( 'styles', __FILE__ ) . '/' . $filename;
}
if ( 'path' === $type ) {
if ( is_file( $stylefile ) ) {
return $stylefile;
} else {
return false;
}
} else {
return $stylefile;
}
}
/**
* Identify whether a given file is a custom style or a core style
*
* @param string $filename File name..
*
* @return boolean
*/
function mc_is_custom_style( $filename ) {
if ( 0 === strpos( $filename, 'mc_custom_' ) ) {
return true;
} else {
return false;
}
}
/**
* Fetch the styles for the current selected style
*
* @param string $filename File name.
* @param string $return content or filename.
*
* @return string
*/
function mc_default_style( $filename = false, $return = 'content' ) {
if ( ! $filename ) {
$mc_css_file = get_option( 'mc_css_file' );
} else {
$mc_css_file = $filename;
}
$mc_current_file = dirname( __FILE__ ) . '/templates/' . $mc_css_file;
if ( file_exists( $mc_current_file ) ) {
$f = fopen( $mc_current_file, 'r' );
$file = fread( $f, filesize( $mc_current_file ) );
$mc_current_style = $file;
fclose( $f );
switch ( $return ) {
case 'content':
return $mc_current_style;
break;
case 'path':
return $mc_current_file;
break;
case 'both':
return array( $mc_current_file, $mc_current_style );
break;
}
}
return '';
}
/**
* List CSS files in a directory
*
* @param string $directory File directory.
*
* @return array list of CSS files
*/
function mc_css_list( $directory ) {
if ( ! file_exists( $directory ) ) {
return array();
}
$results = array();
$handler = opendir( $directory );
// Keep going until all files in directory have been read.
while ( false !== ( $file = readdir( $handler ) ) ) { // phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition
// If $file isn't this directory or parent, add it to the results array.
if ( '.' !== $file && '..' !== $file ) {
$results[] = $file;
}
}
closedir( $handler );
sort( $results, SORT_STRING );
return $results;
}
/**
* Write updated styles to file
*
* @param string $file File to write to.
* @param string $style New styles to write.
*
* @return boolean;
*/
function mc_write_styles( $file, $style ) {
if ( defined( 'DISALLOW_FILE_EDIT' ) && DISALLOW_FILE_EDIT === true ) {
return false;
}
$standard = dirname( __FILE__ ) . '/styles/';
$files = mc_css_list( $standard );
foreach ( $files as $f ) {
$filepath = mc_get_style_path( $f );
$path = pathinfo( $filepath );
if ( 'css' === $path['extension'] ) {
$styles_whitelist[] = $filepath;
}
}
if ( in_array( $file, $styles_whitelist, true ) ) {
if ( function_exists( 'wp_is_writable' ) ) {
$is_writable = wp_is_writable( $file );
} else {
$is_writable = is_writeable( $file );
}
if ( $is_writable ) {
$f = fopen( $file, 'w+' );
fwrite( $f, $style ); // number of bytes to write, max.
fclose( $f );
return true;
} else {
return false;
}
}
return false;
}
/**
* Check diff between current styles and shipped styles
*
* @param string $left_string Currently installed.
* @param string $right_string Shipped.
* @param mixed array/null $args Function table rendered arguments.
*
* @return string
*/
function mc_text_diff( $left_string, $right_string, $args = null ) {
$defaults = array(
'title' => '',
'title_left' => '',
'title_right' => '',
);
$args = wp_parse_args( $args, $defaults );
if ( ! class_exists( 'WP_Text_Diff_Renderer_Table' ) ) {
require( ABSPATH . WPINC . '/wp-diff.php' );
}
$left_string = normalize_whitespace( $left_string );
$right_string = normalize_whitespace( $right_string );
$left_lines = explode( "\n", $left_string );
$right_lines = explode( "\n", $right_string );
$text_diff = new Text_Diff( $left_lines, $right_lines );
$renderer = new WP_Text_Diff_Renderer_Table( $args );
$diff = $renderer->render( $text_diff );
$r = '';
if ( ! $diff ) {
return '';
}
if ( $args['title'] ) {
$r .= "<h2>$args[title]</h2>\n";
}
$r .= "<table class='diff'>\n";
$r .= "<col class='content diffsplit left' /><col class='content diffsplit middle' /><col class='content diffsplit right' />";
if ( $args['title'] || $args['title_left'] || $args['title_right'] ) {
$r .= '<thead>';
}
if ( $args['title_left'] || $args['title_right'] ) {
$r .= "<tr class='diff-sub-title'>\n";
$r .= "\t<th scope='col'>$args[title_left]</th><td></td>\n";
$r .= "\t<th scope='col'>$args[title_right]</th>\n";
$r .= "</tr>\n";
}
if ( $args['title'] || $args['title_left'] || $args['title_right'] ) {
$r .= "</thead>\n";
}
$r .= "<tbody>\n$diff\n</tbody>\n";
$r .= '</table>';
return $r;
}
add_action(
'admin_enqueue_scripts',
function() {
if ( ! function_exists( 'wp_enqueue_code_editor' ) ) {
return;
}
if ( sanitize_title( __( 'My Calendar', 'my-calendar' ) ) . '_page_my-calendar-styles' !== get_current_screen()->id ) {
return;
}
// Enqueue code editor and settings for manipulating HTML.
$settings = wp_enqueue_code_editor( array( 'type' => 'text/css' ) );
// Bail if user disabled CodeMirror.
if ( false === $settings ) {
return;
}
wp_add_inline_script(
'code-editor',
sprintf(
'jQuery( function() { wp.codeEditor.initialize( "style", %s ); } );',
wp_json_encode( $settings )
)
);
}
);