759 lines
19 KiB
PHP
759 lines
19 KiB
PHP
<?php
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/**
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* Infinite Scroll Presets Interface
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*
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* Stores theme-specific presets for CSS Selectors to aid with setup. Pulls community presets from CSV
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* stored in the plugin's SVN repo.
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*
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* The csv from the repo is cached for 24 hours as a site-transient (available to all sites on a network install)
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*
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* Custom presets (beyond the SVN CSV) are stored as a site option (also available to all sites on network)
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*
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* On a single site install, settings available to all admins.
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* On a network install, settings available only to super-admins (but site-admins can load those presets)
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*
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* If a user hasn't chosen CSS selectors for there theme and a preset exists, the plugin will
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* default to the preset (thus in many cases, no need to adjust any settings or know this exists).
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*
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* Hierarchy of presets: 1) User specified, 2) (admin specified) custom preset, 3) community specified preset
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*
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* @subpackage Presets
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* @package Infinite_Scroll
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*/
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require_once(ABSPATH . "/wp-admin/includes/theme.php");
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class Infinite_Scroll_Presets {
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private $parent;
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// public $preset_url = 'http://plugins.svn.wordpress.org/infinite-scroll/branches/PresetDB/presets.csv';
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public $preset_url = 'https://raw.github.com/benbalter/Infinite-Scroll/presetDB/presets.csv';
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public $custom_preset_key = 'infinite_scroll_presets';
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public $ttl = 86000; //TTL of transient cache in seconds, 1 day = 86400 = 60*60*24
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public $keys = array( 'theme', 'contentSelector', 'navSelector', 'itemSelector', 'nextSelector' );
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/**
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* Register hooks with WordPress API
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*
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* @param object $parent (reference) the parent class
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*/
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function __construct( &$parent ) {
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$this->parent = &$parent;
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add_action( 'admin_init', array( &$this, 'set_presets' ) );
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add_action( 'wp_ajax_infinite-scroll-edit-preset', array( &$this, 'process_ajax_edit' ) );
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add_action( 'wp_ajax_infinite-scroll-delete-preset', array( &$this, 'process_ajax_delete' ) );
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add_filter( $this->parent->prefix . 'presets', array( &$this, 'merge_custom_presets' ) );
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add_filter( $this->parent->prefix . 'options', array( &$this, 'default_to_presets'), 9 );
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add_action( $this->parent->prefix . 'refresh_cache', array( &$this, 'get_presets' ) );
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}
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/**
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* Allow for class overloading
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* @param string $preset the theme slug to retrieve
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* @return array|bool the presets or false on failure
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*/
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function __get( $preset ) {
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return $this->get_preset( $preset );
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}
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function getThemes($args) {
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if (function_exists("wp_get_themes")) {
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return wp_get_themes($args);
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} else {
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return get_themes();
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}
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}
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function getTheme($theme) {
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if (function_exists("wp_get_theme")) {
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return wp_get_theme($theme);
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} else {
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return get_theme($theme);
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}
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}
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/**
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* Pulls preset array from cache, or retrieves and parses
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* @return array an array of preset objects
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* @todo Consider using TLC Transients in case cron isn't working
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*/
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function get_presets() {
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//check cache
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if ( $cache = get_transient( $this->parent->prefix . 'presets' ) )
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return apply_filters( $this->parent->prefix . 'presets', $cache );
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$data = wp_remote_get( $this->preset_url );
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if ( is_wp_error( $data ) )
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return array();
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$data = wp_remote_retrieve_body( $data );
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//parse CSV string into array
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$presets = $this->parse_csv( $data );
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//sort by key alpha ascending
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asort( $presets );
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set_transient( $this->parent->prefix . 'presets', $presets, $this->ttl );
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return apply_filters( $this->parent->prefix . 'presets', $presets );
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}
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/**
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* Return a theme's preset object
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* @param string $theme the slug of theme to retrieve
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* @return object the preset object
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*/
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function get_preset( $theme = null ) {
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if ( $theme == null )
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$theme = get_stylesheet();
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$presets = $this->get_presets();
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//direct match found, return
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if ( array_key_exists( $theme, $presets ) )
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return $presets[ $theme ];
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//no direct match found, permahps this is a child theme?
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//theme isn't installed, no way to know if it's a child, so skip
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if ( !$this->theme_installed( $theme ) )
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return false;
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//WP version 3.4+, use the new wp_get_themes function
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if ( function_exists( 'wp_get_theme' ) ) {
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$theme = $this->getTheme($theme);
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//not a theme or not a child
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if ( is_wp_error( $theme ) || !is_object( $theme->parent() ) )
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return false;
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return $this->get_preset( $theme->parent()->stylesheet );
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}
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//pre 3.4 back compat..
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//get theme by slug
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$name = $this->get_name( $theme );
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$themes = $this->getThemes(array());
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$child = $themes[ $name ];
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//not a child theme
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if ( !isset( $child['Template'] ) || empty( $child['Template'] ) || $child['Template'] == $child['Stylesheet'] )
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return false;
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//pull up parent data to get its name
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$parent = $themes[$name]['Template'];
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$parent = get_theme_data( get_theme_root( $child['Template'] ) . '/' . $child['Template'] . '/style.css' );
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$preset = $this->get_preset( $parent['Stylesheet'] );
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//no parent preset
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if ( !$preset )
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return false;
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//rename the theme of the parent preset object for consistent return
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$preset->theme = $theme;
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$preset->parentPreset = $parent['Stylesheet'];
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return $preset;
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}
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/**
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* On plugin activation register with WP_Cron API to asynchronously refresh cache every 24 hours
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* This will also asynchronously prime the cache on activation
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*/
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function schedule() {
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wp_schedule_event( time(), 'daily', $this->parent->prefix . 'refresh_cache' );
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}
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/**
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* Clear chron schedule on deactivation
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*/
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function unschedule() {
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wp_clear_scheduled_hook( $this->parent->prefix . 'refresh_cache' );
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}
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/**
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* Conditionally prompts users on options page to use the default selectors
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* @uses get_preset
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*/
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function preset_prompt() {
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$preset = $this->get_preset( );
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if ( !$preset )
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return;
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unset( $preset->theme );
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unset( $preset->parentPreset );
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//if they are already using the preset, don't prompt
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$using_default = true;
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foreach ( $preset as $key => $value ) {
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if ( $this->parent->options->$key != $value )
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$using_default = false;
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}
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if ( $using_default )
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return;
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require dirname( $this->parent->file ) . '/templates/preset-prompt.php';
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}
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/**
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* Reset selectors to default
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*/
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function set_presets() {
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if ( !isset( $_GET['set_presets'] ) )
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return;
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if ( !current_user_can( 'manage_options' ) )
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return;
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check_admin_referer( 'infinite-scroll-presets', 'nonce' );
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//don't delete options if we don't have a preset
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$preset = $this->get_preset( );
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if ( !$preset )
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return;
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foreach ( $this->keys as $key )
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$this->parent->options->$key = null;
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wp_redirect( admin_url( 'options-general.php?page=infinite_scroll_options&settings-updated=true' ) );
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exit();
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}
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/**
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* Handles AJAX edits from the manage presets form
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*/
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function process_ajax_edit() {
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if ( !current_user_can( 'manage_options' ) )
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wp_die( -1 );
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if ( is_multisite() && !is_super_admin() )
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wp_die( -1 );
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$data = new stdClass;
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foreach ( $this->keys as $key )
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$data->$key = addslashes( trim( $_POST[ $key . '_column-' . $key ] ) );
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$this->set_custom_preset( $data->theme, $data );
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wp_die( 1 );
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}
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/**
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* Handles AJAX requests to delete presets from the manage presets form
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*/
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function process_ajax_delete() {
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if ( !current_user_can( 'manage_options' ) )
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wp_die( -1 );
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if ( is_multisite() && !is_super_admin() )
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wp_die( -1 );
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if ( !isset( $_GET['theme'] ) )
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wp_die( -1 );
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$this->delete_custom_preset( $_GET['theme'] );
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}
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/**
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* Retreive global custom presets
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* @return array the custom preset array
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*/
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function get_custom_presets( ) {
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$presets = get_site_option( $this->custom_preset_key, array(), true );
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return apply_filters( $this->parent->prefix . 'custom_presets', $presets );
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}
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/**
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* Update global custom presets
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* @param array $presets the presets (all)
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* @return bool success/fail
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*/
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function set_custom_presets( $presets ) {
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return update_site_option( $this->custom_preset_key, $presets );
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}
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/**
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* Store a theme's global presets
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* @param string $theme the theme name
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* @param array $preset the presets
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* @return bool success/fail
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*/
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function set_custom_preset( $theme, $preset ) {
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$presets = $this->get_custom_presets();
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$presets[ $theme ] = $preset;
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return $this->set_custom_presets( $presets );
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}
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/**
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* Removes a custom preset from the database
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* @param string $theme the theme to remove
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* @return bool success/fail
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*/
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function delete_custom_preset( $theme ) {
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$presets = $this->get_custom_presets();
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unset( $presets[ $theme ] );
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return $this->set_custom_presets( $presets );
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}
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/**
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* Allow custom presets to merge/override community presets
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* @param unknown $presets
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* @return unknown
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*/
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function merge_custom_presets( $presets ) {
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// 2nd array overrides keys that overlap with first array
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$presets = array_merge( $presets, $this->get_custom_presets() );
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//sort by key alpha ascending
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asort( $presets );
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return $presets;
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}
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/**
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* If a selector is not set, try to grab a preset to save the user trouble
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* @param array $options the options array
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* @return array the defaulted options array
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*/
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function default_to_presets( $options ) {
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//we don't have a preset, no need to go any further
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if ( !( $preset = $this->get_preset( ) ) )
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return $options;
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foreach ( $this->keys as $key ) {
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if ( empty( $options[$key] ) )
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$options[$key] = $preset->$key;
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}
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return $options;
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}
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/**
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* Converts legacy csv.php format
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* Removes first two lines and last line
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* @param string $data the contents of the CSV (usually via wp_remote_get)
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* @param string the equivalent standard CSV
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*/
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function parse_legacy_csv( $data ) {
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if ( is_string( $data ) )
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$data = explode( "\n", $data );
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//remove first two lines
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$data = array_slice( $data, 2 );
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//remove the last line
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array_pop( $data );
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$presets = $this->parse_csv( $data );
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$output = array();
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//convert Theme Name to stylesheet and stuff into output array
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foreach( $presets as $theme ) {
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$theme->theme = $this->get_stylesheet( $theme->theme );
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$output[ $theme->theme ] = $theme;
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}
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return $output;
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}
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/**
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* Parse CSV into array of preset objects
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* @param string|array the CSV data, either as a string or as an array of lines
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* @return array array of preset objects
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*/
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function parse_csv( $data ) {
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if ( is_string( $data ) )
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$data = explode( "\n", $data );
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//php 5.3+
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if ( function_exists( 'str_getcsv' ) ) {
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foreach ( $data as &$line )
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$line = str_getcsv( $line );
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//php 5.2
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// fgetcsv needs a file handle,
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// so write the string to a temp file before parsing
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} else {
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$fh = tmpfile();
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fwrite( $fh, implode( "\n", $data ) );
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fseek( $fh, 0 );
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$data = array();
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while( $line = fgetcsv( $fh ) )
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$data[] = $line;
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fclose( $fh );
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}
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$presets = array();
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//build preset objects and stuff into keyed array
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foreach ( $data as &$line ) {
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$lineObj = new stdClass;
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foreach ( $this->keys as $id => $key )
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$lineObj->$key = $line[ $id ];
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$presets[ $lineObj->theme ] = $lineObj;
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}
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return $presets;
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}
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/**
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* Return object representing current theme's selectors
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* @return object the same as would be returned from get_preset()
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*/
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function current_selectors() {
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$theme = new stdClass();
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foreach ( $this->keys as $key )
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$theme->$key = $this->parent->options->$key;
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$theme->theme = get_stylesheet();
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return $theme;
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}
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/**
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* Export CSS Selectors as CSV
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* @param bool $all (optional) whether to include community selectors in output
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* @return string CSV of selectors
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*/
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function export( $all = false ) {
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$presets = array();
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//if the current theme is not a known preset or they want all
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if ( !$this->get_preset( ) || $all )
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$presets[ get_stylesheet() ] = $this->current_selectors();
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//user has access to global custom presets
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if ( is_multisite() && is_super_admin() ) {
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if ( $custom = $this->get_custom_presets() );
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$presets = array_merge( $presets, $custom );
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}
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//include community presets, if asked
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if ( $all )
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$presets = array_merge( $this->get_presets(), $presets );
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asort( $presets );
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//workaround because fputcsv needs a file handle by default
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$fh = tmpfile();
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$length = 0;
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foreach ( $presets as &$preset )
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$length += fputcsv( $fh, (array) $preset );
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if ( $length == 0 )
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return false;
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fseek( $fh, 0 );
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$csv = fread( $fh, $length );
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fclose( $fh );
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return $csv;
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}
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/**
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* Migrates legacy csv.php files to 2.5's custom presets format
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* @uses parse_legacy_csv
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*/
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function migrate() {
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//no preset file to migrate
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if ( !file_exists( dirname( $this->parent->file ) . '/PresetDB.csv.php' ) )
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return;
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$data = file_get_contents( dirname( $this->parent->file ) . '/PresetDB.csv.php' );
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$presets = $this->parse_legacy_csv( $data );
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//this wiill override any existing presets,
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// but is okay as is only being fired when no presets exist
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$this->set_custom_presets( $presets );
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return $presets;
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}
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/**
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* Determines whether a given theme is installed
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* @param string|object $theme either the theme slug or the preset object
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* @return bool true if insalled, otherwise false
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*/
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function theme_installed( $theme ) {
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// get theme name if $theme is an preset object
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if ( is_object( $theme ) ) {
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$theme = $theme->theme;
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}
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//3.4+
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if ( function_exists( 'wp_get_theme' ) ) {
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return wp_get_theme( $theme )->exists();
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} else {
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//pre 3.4
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$themes = get_themes();
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$name = $this->get_name( $theme );
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return array_key_exists( $name, $themes );
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}
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}
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/**
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* Given a theme name, returns the coresponding theme stylesheet
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*
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* Used for converting legacy CSVs which were name based to new CSVs which are stylesheet based
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* since 3.4 returns themes keyed to stylesheets, not names as it did pre-3.4
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*
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* @param string $theme the theme name
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* @return string the stylesheet
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*/
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function get_stylesheet( $name ) {
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//pre 3.4
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if ( !function_exists( 'wp_get_themes' ) ) {
|
|
|
|
if ( $theme = get_theme( $name ) )
|
|
return $theme->stylesheet;
|
|
|
|
//3.4+
|
|
} else {
|
|
|
|
//we can't use wp_filter_list_object with WP_Theme objects, so filter manually
|
|
foreach ( $this->getThemes(null) as $theme )
|
|
if ( $theme->name = $name )
|
|
return $theme->stylesheet;
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
/**
|
|
* Given a theme stylesheet, return the coresponding theme name
|
|
*
|
|
* Used to normalize data between 3.3 and 3.4 where keying of themes switched from name to stylesheet
|
|
*
|
|
* @param string $stylesheet the theme stylesheet (slug)
|
|
* @return string the theme name
|
|
*/
|
|
function get_name( $stylesheet ) {
|
|
|
|
//3.4+
|
|
if ( function_exists( 'wp_get_theme' ) ) {
|
|
|
|
if ( $theme = wp_get_theme( $stylesheet ) )
|
|
return $theme->name;
|
|
|
|
|
|
//pre 3.4
|
|
} else {
|
|
|
|
foreach ( get_themes() as $theme )
|
|
if ( $theme->stylesheet == $stylesheet )
|
|
return $theme->name;
|
|
|
|
}
|
|
|
|
//theme isn't installed, use the WP.org API to grab the name rather than risk losing data on upgrade
|
|
$api = themes_api( 'theme_information', array( 'slug' => $stylesheet, 'fields' => array( 'sections' => false, 'tags' => false ) ) );
|
|
|
|
if ( is_wp_error( $api ) )
|
|
return false;
|
|
|
|
return $api->name;
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
if (!class_exists('WP_List_Table')) {
|
|
require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
|
|
}
|
|
|
|
/**
|
|
* List table for manage custom presets page
|
|
*/
|
|
class Infinite_Scroll_Presets_Table extends WP_List_Table {
|
|
|
|
/**
|
|
* Register with Parent
|
|
*/
|
|
function __construct( $args = array() ) {
|
|
|
|
parent::__construct( array(
|
|
'singular' => 'preset',
|
|
'plural' => 'presets',
|
|
'ajax' => true,
|
|
) );
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Default column callback
|
|
* @param object $item the item to display
|
|
* @param string $column_name the column name
|
|
* @return string the HTML to display
|
|
*/
|
|
function column_default( $item, $column_name ) {
|
|
return $item->$column_name;
|
|
}
|
|
|
|
|
|
/**
|
|
* Callback to display the theme column
|
|
* @param object $item the preset object
|
|
* @return string the HTML to display
|
|
*/
|
|
function column_theme( $item ) {
|
|
global $infinite_scroll;
|
|
|
|
$s = '<strong><a href="#" class="theme-name">' . $item->theme . '</a></strong>';
|
|
$s .= '<div class="edit edit-link" style="visibility:hidden;"><a href="#">' . __( 'Edit', 'infinite-scroll' ) . '</a> | <span class="delete"><a href="#">' . __( 'Delete', 'infinite-scroll' ) . '</a></span></div>';
|
|
$s .= '<div class="save save-link" style="display:none; padding-top:5px;"><a href="#" class="button-primary">' . __( 'Save', 'infinite-scroll' ) . '</a> <a href="#" class="cancel">' . __( 'Cancel', 'infinite-scroll' ) . '</a> <img class="loader" style="display:none;" src="'. admin_url( '/images/loading.gif' ) .'" /></div>';
|
|
return $s;
|
|
}
|
|
|
|
|
|
/**
|
|
* Callaback to return list of columns to display
|
|
* @return array the columns to display
|
|
*/
|
|
function get_columns() {
|
|
return array(
|
|
'theme' => 'Theme',
|
|
'contentSelector' => 'Content Selector',
|
|
'navSelector' => 'Navigation Selector',
|
|
'nextSelector' => 'Next Selector',
|
|
'itemSelector' => 'Item Selector',
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
* Grab data and filter prior to passing to table class
|
|
*/
|
|
function prepare_items() {
|
|
global $infinite_scroll;
|
|
|
|
$per_page = 25;
|
|
|
|
$columns = $this->get_columns();
|
|
$hidden = array();
|
|
$sortable = array();
|
|
|
|
$this->_column_headers = array($columns, $hidden, $sortable);
|
|
|
|
$data = $infinite_scroll->presets->get_presets();
|
|
|
|
//only display installed themes
|
|
$data = array_filter( $data, array( &$infinite_scroll->presets, 'theme_installed' ) );
|
|
|
|
//merge in themes
|
|
$themes = $infinite_scroll->presets->getThemes(null);
|
|
|
|
foreach ( $themes as $theme => $theme_data ) {
|
|
|
|
if ( array_key_exists( $theme, $data) )
|
|
continue;
|
|
|
|
//check for parent theme's preset, if any
|
|
if ( $preset = $infinite_scroll->presets->get_preset( $theme ) ) {
|
|
$data[ $theme ] = $preset;
|
|
continue;
|
|
}
|
|
|
|
$themeObj = new stdClass;
|
|
|
|
foreach ( $infinite_scroll->presets->keys as $key )
|
|
$themeObj->$key = null;
|
|
|
|
$themeObj->theme = $theme;
|
|
|
|
$data[ $theme ] = $themeObj;
|
|
|
|
}
|
|
|
|
asort( $data );
|
|
|
|
$current_page = $this->get_pagenum();
|
|
|
|
$total_items = count($data);
|
|
|
|
$data = array_slice($data, (($current_page-1)*$per_page), $per_page);
|
|
|
|
$this->items = $data;
|
|
|
|
$this->set_pagination_args( array(
|
|
'total_items' => $total_items, //WE have to calculate the total number of items
|
|
'per_page' => $per_page, //WE have to determine how many items to show on a page
|
|
'total_pages' => ceil($total_items/$per_page) //WE have to calculate the total number of pages
|
|
) );
|
|
|
|
}
|
|
|
|
}
|