File Editors: Introduce sandboxed live editing of PHP files with rollbacks for both themes and plugins.
- Edits to active plugins which cause PHP fatal errors will no longer auto-deactivate the plugin. Supersedes #39766.
- Introduce sandboxed PHP file edits for active themes, preventing accidental whitescreening of a user's site when introducing a fatal error.
- After writing a change to a PHP file for an active theme or plugin, perform loopback requests on the file editor admin screens and the homepage to check for fatal errors. If a fatal error is encountered, roll back the edited file and display the error to the user to fix and try again.
- Introduce a secure way to scrape PHP fatal errors from a site via
wp_start_scraping_edited_file_errors() and wp_finalize_scraping_edited_file_errors().
- Moves file modifications from
theme-editor.php and plugin-editor.php to common wp_edit_theme_plugin_file() function.
- Refactor themes and plugin editors to submit file changes via Ajax instead of doing full page refreshes when JS is available.
- Use
get method for theme/plugin dropdowns.
- Improve styling of plugin editors, including width of plugin/theme dropdowns.
- Improve notices API for theme/plugin editor JS component.
- Strip common base directory from plugin file list. See #24048.
- Factor out functions to list editable file types in
wp_get_theme_file_editable_extensions() and wp_get_plugin_file_editable_extensions().
- Scroll to line in editor that has linting error when attempting to save. See #41886.
- Add checkbox to dismiss lint errors to proceed with saving. See #41887.
- Only style the Update File button as disabled instead of actually disabling it for accessibility reasons.
- Ensure that value from CodeMirror is used instead of
textarea when CodeMirror is present.
- Add "Are you sure?" check when leaving editor when there are unsaved changes.
Supersedes [41560].
See #39766, #24048, #41886.
Props westonruter, Clorith, melchoyce, johnbillion, jjj, jdgrimes, azaozz.
Fixes #21622, #41887.