From 2cf775d1948deb977ee8afe94884e7b269d00eb6 Mon Sep 17 00:00:00 2001 From: "Anthony G. Basile" Date: Mon, 17 Feb 2020 12:03:54 -0500 Subject: Add classic-editor 1.5 Signed-off-by: Anthony G. Basile --- plugins/classic-editor/LICENSE.md | 400 ++++++++++ plugins/classic-editor/classic-editor.php | 941 +++++++++++++++++++++++ plugins/classic-editor/js/block-editor-plugin.js | 23 + plugins/classic-editor/readme.txt | 119 +++ 4 files changed, 1483 insertions(+) create mode 100644 plugins/classic-editor/LICENSE.md create mode 100644 plugins/classic-editor/classic-editor.php create mode 100644 plugins/classic-editor/js/block-editor-plugin.js create mode 100644 plugins/classic-editor/readme.txt diff --git a/plugins/classic-editor/LICENSE.md b/plugins/classic-editor/LICENSE.md new file mode 100644 index 00000000..26279ac8 --- /dev/null +++ b/plugins/classic-editor/LICENSE.md @@ -0,0 +1,400 @@ +### WordPress - Web publishing software + + Copyright 2011-2019 by the contributors + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +This program incorporates work covered by the following copyright and +permission notices: + + b2 is (c) 2001, 2002 Michel Valdrighi - m@tidakada.com - + http://tidakada.com + + Wherever third party code has been used, credit has been given in the code's + comments. + + b2 is released under the GPL + +and + + WordPress - Web publishing software + + Copyright 2003-2010 by the contributors + + WordPress is released under the GPL + +--- + +### GNU GENERAL PUBLIC LICENSE + +Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +### Preamble + +The licenses for most software are designed to take away your freedom +to share and change it. By contrast, the GNU General Public License is +intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + +When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + +To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if +you distribute copies of the software, or if you modify it. + +For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + +We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + +Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, +we want its recipients to know that what they have is not the +original, so that any problems introduced by others will not reflect +on the original authors' reputations. + +Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at +all. + +The precise terms and conditions for copying, distribution and +modification follow. + +### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + +**0.** This License applies to any program or other work which +contains a notice placed by the copyright holder saying it may be +distributed under the terms of this General Public License. The +"Program", below, refers to any such program or work, and a "work +based on the Program" means either the Program or any derivative work +under copyright law: that is to say, a work containing the Program or +a portion of it, either verbatim or with modifications and/or +translated into another language. (Hereinafter, translation is +included without limitation in the term "modification".) Each licensee +is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the Program +(independent of having been made by running the Program). Whether that +is true depends on what the Program does. + +**1.** You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a +fee. + +**2.** You may modify your copy or copies of the Program or any +portion of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + +**a)** You must cause the modified files to carry prominent notices +stating that you changed the files and the date of any change. + + +**b)** You must cause any work that you distribute or publish, that in +whole or in part contains or is derived from the Program or any part +thereof, to be licensed as a whole at no charge to all third parties +under the terms of this License. + + +**c)** If the modified program normally reads commands interactively +when run, you must cause it, when started running for such interactive +use in the most ordinary way, to print or display an announcement +including an appropriate copyright notice and a notice that there is +no warranty (or else, saying that you provide a warranty) and that +users may redistribute the program under these conditions, and telling +the user how to view a copy of this License. (Exception: if the +Program itself is interactive but does not normally print such an +announcement, your work based on the Program is not required to print +an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + +**3.** You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + +**a)** Accompany it with the complete corresponding machine-readable +source code, which must be distributed under the terms of Sections 1 +and 2 above on a medium customarily used for software interchange; or, + + +**b)** Accompany it with a written offer, valid for at least three +years, to give any third party, for a charge no more than your cost of +physically performing source distribution, a complete machine-readable +copy of the corresponding source code, to be distributed under the +terms of Sections 1 and 2 above on a medium customarily used for +software interchange; or, + + +**c)** Accompany it with the information you received as to the offer +to distribute corresponding source code. (This alternative is allowed +only for noncommercial distribution and only if you received the +program in object code or executable form with such an offer, in +accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + +**4.** You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt otherwise +to copy, modify, sublicense or distribute the Program is void, and +will automatically terminate your rights under this License. However, +parties who have received copies, or rights, from you under this +License will not have their licenses terminated so long as such +parties remain in full compliance. + +**5.** You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + +**6.** Each time you redistribute the Program (or any work based on +the Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + +**7.** If, as a consequence of a court judgment or allegation of +patent infringement or for any other reason (not limited to patent +issues), conditions are imposed on you (whether by court order, +agreement or otherwise) that contradict the conditions of this +License, they do not excuse you from the conditions of this License. +If you cannot distribute so as to satisfy simultaneously your +obligations under this License and any other pertinent obligations, +then as a consequence you may not distribute the Program at all. For +example, if a patent license would not permit royalty-free +redistribution of the Program by all those who receive copies directly +or indirectly through you, then the only way you could satisfy both it +and this License would be to refrain entirely from distribution of the +Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + +**8.** If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + +**9.** The Free Software Foundation may publish revised and/or new +versions of the General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Program does not specify a +version number of this License, you may choose any version ever +published by the Free Software Foundation. + +**10.** If you wish to incorporate parts of the Program into other +free programs whose distribution conditions are different, write to +the author to ask for permission. For software which is copyrighted by +the Free Software Foundation, write to the Free Software Foundation; +we sometimes make exceptions for this. Our decision will be guided by +the two goals of preserving the free status of all derivatives of our +free software and of promoting the sharing and reuse of software +generally. + +**NO WARRANTY** + +**11.** BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + +**12.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + +### END OF TERMS AND CONDITIONS + +### How to Apply These Terms to Your New Programs + +If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these +terms. + +To do so, attach the following notices to the program. It is safest to +attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + one line to give the program's name and an idea of what it does. + Copyright (C) yyyy name of author + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +Also add information on how to contact you by electronic and paper +mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details + type `show w'. This is free software, and you are welcome + to redistribute it under certain conditions; type `show c' + for details. + +The hypothetical commands \`show w' and \`show c' should show the +appropriate parts of the General Public License. Of course, the +commands you use may be called something other than \`show w' and +\`show c'; they could even be mouse-clicks or menu items--whatever +suits your program. + +You should also get your employer (if you work as a programmer) or +your school, if any, to sign a "copyright disclaimer" for the program, +if necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright + interest in the program `Gnomovision' + (which makes passes at compilers) written + by James Hacker. + + signature of Ty Coon, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, +you may consider it more useful to permit linking proprietary +applications with the library. If this is what you want to do, use the +[GNU Lesser General Public +License](http://www.gnu.org/licenses/lgpl.html) instead of this +License. diff --git a/plugins/classic-editor/classic-editor.php b/plugins/classic-editor/classic-editor.php new file mode 100644 index 00000000..afac3c20 --- /dev/null +++ b/plugins/classic-editor/classic-editor.php @@ -0,0 +1,941 @@ + 'classic', // Accepted values: 'classic', 'block'. + * 'allow-users' => false, + * + * @param boolean To override the settings return an array with the above keys. + */ + $settings = apply_filters( 'classic_editor_plugin_settings', false ); + + if ( is_array( $settings ) ) { + return array( + 'editor' => ( isset( $settings['editor'] ) && $settings['editor'] === 'block' ) ? 'block' : 'classic', + 'allow-users' => ! empty( $settings['allow-users'] ), + 'hide-settings-ui' => true, + ); + } + + if ( ! empty( self::$settings ) && $refresh === 'no' ) { + return self::$settings; + } + + if ( is_multisite() ) { + $defaults = array( + 'editor' => get_network_option( null, 'classic-editor-replace' ) === 'block' ? 'block' : 'classic', + 'allow-users' => false, + ); + + /** + * Filters the default network options. + * + * @param array $defaults The default options array. See `classic_editor_plugin_settings` for supported keys and values. + */ + $defaults = apply_filters( 'classic_editor_network_default_settings', $defaults ); + + if ( get_network_option( null, 'classic-editor-allow-sites' ) !== 'allow' ) { + // Per-site settings are disabled. Return default network options nad hide the settings UI. + $defaults['hide-settings-ui'] = true; + return $defaults; + } + + // Override with the site options. + $editor_option = get_option( 'classic-editor-replace' ); + $allow_users_option = get_option( 'classic-editor-allow-users' ); + + if ( $editor_option ) { + $defaults['editor'] = $editor_option; + } + if ( $allow_users_option ) { + $defaults['allow-users'] = ( $allow_users_option === 'allow' ); + } + + $editor = ( isset( $defaults['editor'] ) && $defaults['editor'] === 'block' ) ? 'block' : 'classic'; + $allow_users = ! empty( $defaults['allow-users'] ); + } else { + $allow_users = ( get_option( 'classic-editor-allow-users' ) === 'allow' ); + $option = get_option( 'classic-editor-replace' ); + + // Normalize old options. + if ( $option === 'block' || $option === 'no-replace' ) { + $editor = 'block'; + } else { + // empty( $option ) || $option === 'classic' || $option === 'replace'. + $editor = 'classic'; + } + } + + // Override the defaults with the user options. + if ( ( ! isset( $GLOBALS['pagenow'] ) || $GLOBALS['pagenow'] !== 'options-writing.php' ) && $allow_users ) { + $user_options = get_user_option( 'classic-editor-settings' ); + + if ( $user_options === 'block' || $user_options === 'classic' ) { + $editor = $user_options; + } + } + + self::$settings = array( + 'editor' => $editor, + 'hide-settings-ui' => false, + 'allow-users' => $allow_users, + ); + + return self::$settings; + } + + private static function is_classic( $post_id = 0 ) { + if ( ! $post_id ) { + $post_id = self::get_edited_post_id(); + } + + if ( $post_id ) { + $settings = self::get_settings(); + + if ( $settings['allow-users'] && ! isset( $_GET['classic-editor__forget'] ) ) { + $which = get_post_meta( $post_id, 'classic-editor-remember', true ); + + if ( $which ) { + // The editor choice will be "remembered" when the post is opened in either Classic or Block editor. + if ( 'classic-editor' === $which ) { + return true; + } elseif ( 'block-editor' === $which ) { + return false; + } + } + + return ( ! self::has_blocks( $post_id ) ); + } + } + + if ( isset( $_GET['classic-editor'] ) ) { + return true; + } + + return false; + } + + /** + * Get the edited post ID (early) when loading the Edit Post screen. + */ + private static function get_edited_post_id() { + if ( + ! empty( $_GET['post'] ) && + ! empty( $_GET['action'] ) && + $_GET['action'] === 'edit' && + ! empty( $GLOBALS['pagenow'] ) && + $GLOBALS['pagenow'] === 'post.php' + ) { + return (int) $_GET['post']; // post_ID + } + + return 0; + } + + public static function register_settings() { + // Add an option to Settings -> Writing + register_setting( 'writing', 'classic-editor-replace', array( + 'sanitize_callback' => array( __CLASS__, 'validate_option_editor' ), + ) ); + + register_setting( 'writing', 'classic-editor-allow-users', array( + 'sanitize_callback' => array( __CLASS__, 'validate_option_allow_users' ), + ) ); + + add_option_whitelist( array( + 'writing' => array( 'classic-editor-replace', 'classic-editor-allow-users' ), + ) ); + + $heading_1 = __( 'Default editor for all users', 'classic-editor' ); + $heading_2 = __( 'Allow users to switch editors', 'classic-editor' ); + + add_settings_field( 'classic-editor-1', $heading_1, array( __CLASS__, 'settings_1' ), 'writing' ); + add_settings_field( 'classic-editor-2', $heading_2, array( __CLASS__, 'settings_2' ), 'writing' ); + } + + public static function save_user_settings( $user_id ) { + if ( + isset( $_POST['classic-editor-user-settings'] ) && + isset( $_POST['classic-editor-replace'] ) && + wp_verify_nonce( $_POST['classic-editor-user-settings'], 'allow-user-settings' ) + ) { + $user_id = (int) $user_id; + + if ( $user_id !== get_current_user_id() && ! current_user_can( 'edit_user', $user_id ) ) { + return; + } + + $editor = self::validate_option_editor( $_POST['classic-editor-replace'] ); + update_user_option( $user_id, 'classic-editor-settings', $editor ); + } + } + + /** + * Validate + */ + public static function validate_option_editor( $value ) { + if ( $value === 'block' ) { + return 'block'; + } + + return 'classic'; + } + + public static function validate_option_allow_users( $value ) { + if ( $value === 'allow' ) { + return 'allow'; + } + + return 'disallow'; + } + + public static function settings_1() { + $settings = self::get_settings( 'refresh' ); + + ?> +
+

+ /> + +

+

+ /> + +

+
+ + +
+

+ /> + +

+

+ /> + +

+
+ + + + + + +
+ + +
+ + +

+ + + + + + + + + + +
+

+ /> + +

+

+ /> + +

+
+ > + +

+
+ + + ID, 'classic-editor' ); + } + } + + /** + * Remember when the Block Editor was used to edit a post. + */ + public static function remember_block_editor( $editor_settings, $post ) { + $post_type = get_post_type( $post ); + + if ( $post_type && self::can_edit_post_type( $post_type ) ) { + self::remember( $post->ID, 'block-editor' ); + } + + return $editor_settings; + } + + private static function remember( $post_id, $editor ) { + if ( get_post_meta( $post_id, 'classic-editor-remember', true ) !== $editor ) { + update_post_meta( $post_id, 'classic-editor-remember', $editor ); + } + } + + /** + * Choose which editor to use for a post. + * + * Passes through `$which_editor` for Block Editor (it's sets to `true` but may be changed by another plugin). + * + * @uses `use_block_editor_for_post` filter. + * + * @param boolean $use_block_editor True for Block Editor, false for Classic Editor. + * @param WP_Post $post The post being edited. + * @return boolean True for Block Editor, false for Classic Editor. + */ + public static function choose_editor( $use_block_editor, $post ) { + $settings = self::get_settings(); + $editors = self::get_enabled_editors_for_post( $post ); + + // If no editor is supported, pass through `$use_block_editor`. + if ( ! $editors['block_editor'] && ! $editors['classic_editor'] ) { + return $use_block_editor; + } + + // Open the default editor when no $post and for "Add New" links, + // or the alternate editor when the user is switching editors. + if ( empty( $post->ID ) || $post->post_status === 'auto-draft' ) { + if ( + ( $settings['editor'] === 'classic' && ! isset( $_GET['classic-editor__forget'] ) ) || // Add New + ( isset( $_GET['classic-editor'] ) && isset( $_GET['classic-editor__forget'] ) ) // Switch to Classic Editor when no draft post. + ) { + $use_block_editor = false; + } + } elseif ( self::is_classic( $post->ID ) ) { + $use_block_editor = false; + } + + // Enforce the editor if set by plugins. + if ( $use_block_editor && ! $editors['block_editor'] ) { + $use_block_editor = false; + } elseif ( ! $use_block_editor && ! $editors['classic_editor'] && $editors['block_editor'] ) { + $use_block_editor = true; + } + + return $use_block_editor; + } + + /** + * Keep the `classic-editor` query arg through redirects when saving posts. + */ + public static function redirect_location( $location ) { + if ( + isset( $_REQUEST['classic-editor'] ) || + ( isset( $_POST['_wp_http_referer'] ) && strpos( $_POST['_wp_http_referer'], '&classic-editor' ) !== false ) + ) { + $location = add_query_arg( 'classic-editor', '', $location ); + } + + return $location; + } + + /** + * Keep the `classic-editor` query arg when looking at revisions. + */ + public static function get_edit_post_link( $url ) { + $settings = self::get_settings(); + + if ( isset( $_REQUEST['classic-editor'] ) || $settings['editor'] === 'classic' ) { + $url = add_query_arg( 'classic-editor', '', $url ); + } + + return $url; + } + + public static function add_meta_box( $post_type, $post ) { + $editors = self::get_enabled_editors_for_post( $post ); + + if ( ! $editors['block_editor'] || ! $editors['classic_editor'] ) { + // Editors cannot be switched. + return; + } + + $id = 'classic-editor-switch-editor'; + $title = __( 'Editor', 'classic-editor' ); + $callback = array( __CLASS__, 'do_meta_box' ); + $args = array( + '__back_compat_meta_box' => true, + ); + + add_meta_box( $id, $title, $callback, null, 'side', 'default', $args ); + } + + public static function do_meta_box( $post ) { + $edit_url = get_edit_post_link( $post->ID, 'raw' ); + + // Switching to Block Editor. + $edit_url = remove_query_arg( 'classic-editor', $edit_url ); + // Forget the previous value when going to a specific editor. + $edit_url = add_query_arg( 'classic-editor__forget', '', $edit_url ); + + ?> +

+ +

+ __( 'Switch to Classic Editor', 'classic-editor' ) ) + ); + } + + /** + * Add a link to the settings on the Plugins screen. + */ + public static function add_settings_link( $links, $file ) { + $settings = self::get_settings(); + + if ( $file === 'classic-editor/classic-editor.php' && ! $settings['hide-settings-ui'] && current_user_can( 'manage_options' ) ) { + if ( current_filter() === 'plugin_action_links' ) { + $url = admin_url( 'options-writing.php#classic-editor-options' ); + } else { + $url = admin_url( '/network/settings.php#classic-editor-options' ); + } + + // Prevent warnings in PHP 7.0+ when a plugin uses this filter incorrectly. + $links = (array) $links; + $links[] = sprintf( '%s', $url, __( 'Settings', 'classic-editor' ) ); + } + + return $links; + } + + private static function can_edit_post_type( $post_type ) { + $can_edit = false; + + if ( function_exists( 'gutenberg_can_edit_post_type' ) ) { + $can_edit = gutenberg_can_edit_post_type( $post_type ); + } elseif ( function_exists( 'use_block_editor_for_post_type' ) ) { + $can_edit = use_block_editor_for_post_type( $post_type ); + } + + return $can_edit; + } + + /** + * Checks which editors are enabled for the post type. + * + * @param string $post_type The post type. + * @return array Associative array of the editors and whether they are enabled for the post type. + */ + private static function get_enabled_editors_for_post_type( $post_type ) { + if ( isset( self::$supported_post_types[ $post_type ] ) ) { + return self::$supported_post_types[ $post_type ]; + } + + $classic_editor = post_type_supports( $post_type, 'editor' ); + $block_editor = self::can_edit_post_type( $post_type ); + + $editors = array( + 'classic_editor' => $classic_editor, + 'block_editor' => $block_editor, + ); + + /** + * Filters the editors that are enabled for the post type. + * + * @param array $editors Associative array of the editors and whether they are enabled for the post type. + * @param string $post_type The post type. + */ + $editors = apply_filters( 'classic_editor_enabled_editors_for_post_type', $editors, $post_type ); + self::$supported_post_types[ $post_type ] = $editors; + + return $editors; + } + + /** + * Checks which editors are enabled for the post. + * + * @param WP_Post $post The post object. + * @return array Associative array of the editors and whether they are enabled for the post. + */ + private static function get_enabled_editors_for_post( $post ) { + $post_type = get_post_type( $post ); + + if ( ! $post_type ) { + return array( + 'classic_editor' => false, + 'block_editor' => false, + ); + } + + $editors = self::get_enabled_editors_for_post_type( $post_type ); + + /** + * Filters the editors that are enabled for the post. + * + * @param array $editors Associative array of the editors and whether they are enabled for the post. + * @param WP_Post $post The post object. + */ + return apply_filters( 'classic_editor_enabled_editors_for_post', $editors, $post ); + } + + /** + * Adds links to the post/page screens to edit any post or page in + * the Classic Editor or Block Editor. + * + * @param array $actions Post actions. + * @param WP_Post $post Edited post. + * @return array Updated post actions. + */ + public static function add_edit_links( $actions, $post ) { + // This is in Gutenberg, don't duplicate it. + if ( array_key_exists( 'classic', $actions ) ) { + unset( $actions['classic'] ); + } + + if ( ! array_key_exists( 'edit', $actions ) ) { + return $actions; + } + + $edit_url = get_edit_post_link( $post->ID, 'raw' ); + + if ( ! $edit_url ) { + return $actions; + } + + $editors = self::get_enabled_editors_for_post( $post ); + + // Do not show the links if only one editor is available. + if ( ! $editors['classic_editor'] || ! $editors['block_editor'] ) { + return $actions; + } + + // Forget the previous value when going to a specific editor. + $edit_url = add_query_arg( 'classic-editor__forget', '', $edit_url ); + + // Build the edit actions. See also: WP_Posts_List_Table::handle_row_actions(). + $title = _draft_or_post_title( $post->ID ); + + // Link to the Block Editor. + $url = remove_query_arg( 'classic-editor', $edit_url ); + $text = _x( 'Edit (Block Editor)', 'Editor Name', 'classic-editor' ); + /* translators: %s: post title */ + $label = sprintf( __( 'Edit “%s” in the Block Editor', 'classic-editor' ), $title ); + $edit_block = sprintf( '%s', esc_url( $url ), esc_attr( $label ), $text ); + + // Link to the Classic Editor. + $url = add_query_arg( 'classic-editor', '', $edit_url ); + $text = _x( 'Edit (Classic Editor)', 'Editor Name', 'classic-editor' ); + /* translators: %s: post title */ + $label = sprintf( __( 'Edit “%s” in the Classic Editor', 'classic-editor' ), $title ); + $edit_classic = sprintf( '%s', esc_url( $url ), esc_attr( $label ), $text ); + + $edit_actions = array( + 'classic-editor-block' => $edit_block, + 'classic-editor-classic' => $edit_classic, + ); + + // Insert the new Edit actions instead of the Edit action. + $edit_offset = array_search( 'edit', array_keys( $actions ), true ); + array_splice( $actions, $edit_offset, 1, $edit_actions ); + + return $actions; + } + + /** + * Show the editor that will be used in a "post state" in the Posts list table. + */ + public static function add_post_state( $post_states, $post ) { + if ( get_post_status( $post ) === 'trash' ) { + return $post_states; + } + + $editors = self::get_enabled_editors_for_post( $post ); + + if ( ! $editors['classic_editor'] && ! $editors['block_editor'] ) { + return $post_states; + } elseif ( $editors['classic_editor'] && ! $editors['block_editor'] ) { + // Forced to Classic Editor. + $state = '' . _x( 'Classic Editor', 'Editor Name', 'classic-editor' ) . ''; + } elseif ( ! $editors['classic_editor'] && $editors['block_editor'] ) { + // Forced to Block Editor. + $state = '' . _x( 'Block Editor', 'Editor Name', 'classic-editor' ) . ''; + } else { + $last_editor = get_post_meta( $post->ID, 'classic-editor-remember', true ); + + if ( $last_editor ) { + $is_classic = ( $last_editor === 'classic-editor' ); + } elseif ( ! empty( $post->post_content ) ) { + $is_classic = ! self::has_blocks( $post->post_content ); + } else { + $settings = self::get_settings(); + $is_classic = ( $settings['editor'] === 'classic' ); + } + + $state = $is_classic ? _x( 'Classic Editor', 'Editor Name', 'classic-editor' ) : _x( 'Block Editor', 'Editor Name', 'classic-editor' ); + } + + // Fix PHP 7+ warnings if another plugin returns unexpected type. + $post_states = (array) $post_states; + $post_states['classic-editor-plugin'] = $state; + + return $post_states; + } + + public static function add_edit_php_inline_style() { + ?> + + post_content; + } + } + + return false !== strpos( (string) $post, '