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| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName,Squiz.Commenting.FileComment.Missing |
| 2 | |
| 3 | /** |
| 4 | * Core Background Override class. |
| 5 | */ |
| 6 | class Core_Bg_Override { |
| 7 | |
| 8 | /** |
| 9 | * Holds the theme mods before the Customizer saves |
| 10 | * |
| 11 | * @var array |
| 12 | */ |
| 13 | private $mods = array(); |
| 14 | |
| 15 | /** |
| 16 | * The Core Background properties we're interested in |
| 17 | * |
| 18 | * @var array |
| 19 | */ |
| 20 | private $props = array( |
| 21 | 'background_image', |
| 22 | 'background_color', |
| 23 | 'background_repeat', |
| 24 | 'background_position_x', |
| 25 | 'background_attachment', |
| 26 | 'background_image_thumb', |
| 27 | ); |
| 28 | |
| 29 | /** |
| 30 | * The name of the theme_mod we'll save our background properties in |
| 31 | * |
| 32 | * @var string |
| 33 | */ |
| 34 | private $post_upgrade_parity_mod = 'custom-colors-parity'; |
| 35 | |
| 36 | /** |
| 37 | * Crude constructor. Sets up the actions for whether we're in a save override context |
| 38 | * or the default display override context |
| 39 | * |
| 40 | * @param boolean $save_overrides Whether or not we're in "save override" context. |
| 41 | */ |
| 42 | public function __construct( $save_overrides = false ) { |
| 43 | $this->mods = get_theme_mods(); |
| 44 | |
| 45 | if ( $save_overrides ) { |
| 46 | add_action( 'shutdown', array( $this, 'restore_theme_mods' ) ); |
| 47 | } else { |
| 48 | foreach ( $this->props as $prop ) { |
| 49 | add_filter( "theme_mod_$prop", array( $this, $prop ) ); |
| 50 | } |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Called when we want the user upgrades to Custom Design. Permanently sets the parity |
| 56 | * we were heretofore achieving with filters. |
| 57 | * |
| 58 | * @return void |
| 59 | */ |
| 60 | public function do_upgrade() { |
| 61 | // first, let's ditch those filters that we don't need, however this was invoked. |
| 62 | remove_action( 'shutdown', array( $this, 'restore_theme_mods' ) ); |
| 63 | foreach ( $this->props as $prop ) { |
| 64 | remove_filter( "theme_mod_$prop", array( $this, $prop ) ); |
| 65 | } |
| 66 | |
| 67 | // now, time for parity |
| 68 | $previewed_bg_mods = get_theme_mod( $this->post_upgrade_parity_mod, false ); |
| 69 | // nothing set? bail. |
| 70 | if ( ! is_array( $previewed_bg_mods ) ) { |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | // if the preview mod had it active, set it. otherwise, remove it |
| 75 | foreach ( $this->props as $prop ) { |
| 76 | if ( isset( $previewed_bg_mods[ $prop ] ) ) { |
| 77 | set_theme_mod( $prop, $previewed_bg_mods[ $prop ] ); |
| 78 | } else { |
| 79 | remove_theme_mod( $prop ); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | // background_image is a special case - we need to set it to a blank string |
| 84 | // even if we didn't have something - otherwise we might get stuck with a default bg image |
| 85 | if ( ! isset( $previewed_bg_mods['background_image'] ) ) { |
| 86 | set_theme_mod( 'background_image', '' ); |
| 87 | } |
| 88 | |
| 89 | // remove our preview mod |
| 90 | remove_theme_mod( $this->post_upgrade_parity_mod ); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * This is where we restore the background theme mods that were saved |
| 95 | * while previewing Colors and save the previewed mods for future display parity. |
| 96 | * |
| 97 | * @return void |
| 98 | */ |
| 99 | public function restore_theme_mods() { |
| 100 | $pre_save = $this->mods; |
| 101 | $post_save = get_theme_mods(); |
| 102 | $post_upgrade_parity = array(); |
| 103 | |
| 104 | foreach ( $this->props as $prop ) { |
| 105 | |
| 106 | // we're going to store the saved value for usage after the upgrade has been purchased. |
| 107 | if ( isset( $post_save[ $prop ] ) ) { |
| 108 | $post_upgrade_parity[ $prop ] = $post_save[ $prop ]; |
| 109 | } |
| 110 | |
| 111 | if ( ! isset( $pre_save[ $prop ] ) ) { |
| 112 | // case 1: it wasn't set originally. unset it again. |
| 113 | remove_theme_mod( $prop ); |
| 114 | } elseif ( $post_save[ $prop ] !== $pre_save[ $prop ] ) { |
| 115 | // case 2: the value has changed. change it back. |
| 116 | set_theme_mod( $prop, $pre_save[ $prop ] ); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | set_theme_mod( $this->post_upgrade_parity_mod, $post_upgrade_parity ); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Magic method for our preview filters for all core bg theme_mods. DRY FTW. |
| 125 | * |
| 126 | * @param string $name The method we're faking. Conveniently also the property we're overriding. |
| 127 | * We do this for all members of $this->props. |
| 128 | * @param array $args The arguments called on the method. |
| 129 | * @return mixed string|bool The overridden value, if one is applicable, otherwise false. |
| 130 | */ |
| 131 | public function __call( $name, $args ) { |
| 132 | $value = $args[0]; |
| 133 | $overrides = get_theme_mod( $this->post_upgrade_parity_mod, false ); |
| 134 | // we don't have any overrides. Just return |
| 135 | if ( ! is_array( $overrides ) ) { |
| 136 | return $value; |
| 137 | } |
| 138 | return $overrides[ $name ] ?? $value; |
| 139 | } |
| 140 | } |