Allow Theme Editor to Ignore Parent Templates

[GamajoTech]

When a child theme is set to be edited in the Theme Editor, a list of templates from the parent will appear, if not overwritten by identical filenames in the child theme.

However, for theme frameworks, where editing the parent theme templates is bad (as the theme framework may update at any time), there's no way for the parent theme to specify not to include its templates within the list for editing.

Could there be some option for parent themes to specify that their templates should not be available to the Editor, either completely by an option, or by some optional comment tag at the top of each out-of-bounds template file?

Actually, this may not be needed, as it's technically possible already it seems (props to @CharlesClarkson):

// Add to your functions.php child theme.
add_action('admin_notices', 'theme_files_to_edit');
function theme_files_to_edit() {
    global $themes, $theme, $parent_file, $title;

    // Check to see if we are on the editor page.
    if ( __('Edit Themes') == $title && 'themes.php' == $parent_file ) {

        // Remove the genesis files from the files lists.
        $themes[$theme]['Template Files']   = preg_grep('|/parent-theme/|', $themes[$theme]['Template Files'],   PREG_GREP_INVERT);
        $themes[$theme]['Stylesheet Files'] = preg_grep('|/parent-theme/|', $themes[$theme]['Stylesheet Files'], PREG_GREP_INVERT);

    }
}  

See #15672 - we're no longer showing parent templates.