WordPress 3.9 – Trouble Editing TinyMCE 4.0

With WordPress 3.9 coming soon it’s bringing along TinyMCE 4.0. I’m running my plugins and functions through some testing and found that one of my functions seems broken / not working with the new TinyMCE

function myformatTinyMCE( $in )
{
    $in['theme_advanced_buttons1'] = 'bold';
    $in['theme_advanced_buttons2'] = 'formatselect';
    $in['wordpress_adv_hidden'] = false;
    return $in; 
}
add_filter( 'tiny_mce_before_init', 'myformatTinyMCE' );

The above function used to limit the buttons in the tinyMCE to specific buttons, I’ve simplified it a bit to make it easier for testing. If I print out $in it shows the correct values in the correct spots, but when I actually load up a page it just defaults to the normal buttons.

I’ve also tried to use the example in the TinyMCE Codex which also didn’t seem to have any effect.

I’m using the WordPress Beta Tester Plugin and I do have TinyMCE Advanced installed but disabled.

With the new TinyMCE how can I continue using / customizing, and are there any ‘Gotchas’ that have changed from the previous TinyMCE Version?

EDIT

Looks like $in['wordpress_adv_hidden'] = false; is not longer being used – No idea how to unhide the Kitchen Sink.

The strings was new, not more for your requirements.

This is the new content of the hook.

array (
  'selector' => '#content',
  'resize' => 'vertical',
  'menubar' => false,
  'wpautop' => true,
  'indent' => false,
  'toolbar1' => 'template,|,bold,italic,strikethrough,bullist,numlist,blockquote,hr,alignleft,aligncenter,alignright,link,unlink,wp_more,spellchecker,wp_fullscreen,wp_adv',
  'toolbar2' => 'formatselect,underline,alignjustify,forecolor,pastetext,removeformat,charmap,outdent,indent,undo,redo,wp_help',
  'toolbar3' => '',
  'toolbar4' => '',
  'tabfocus_elements' => 'insert-media-button,save-post',
  'body_class' => 'content post-type-post post-status-draft post-format-standard',
)

Also change the strings inside the array in your source to:

function myformatTinyMCE( $in ) {

    $in['toolbar1'] = 'bold';
    $in['toolbar2'] = 'formatselect';

    return $in; 
}
add_filter( 'tiny_mce_before_init', 'myformatTinyMCE' );

But see also this test plugin Gist 9758082 and this thread for WP 3.9 and the new TinyMCE 4.0 to understand the topic.

Forcing Toolbar2

To show always the toolbar 2, without use the button wp_adv add the follow source to a plugin.

add_action( 'plugins_loaded', 'fb_force_show_toolbar2' );
function fb_force_show_toolbar2() {
    set_user_setting( 'hidetb', 1 );
}

BUT, now the hint for the value wordpress_adv_hidden. In the next WordPress version, after 3.9 will restore the old hook wordpress_adv_hidden to toggle the toolbar, see ticket 27963. Then is possible to to use the follow source. $in['wordpress_adv_hidden'] = FALSE;

add_filter( 'tiny_mce_before_init', 'myformatTinyMCE' );
function myformatTinyMCE( $in ) {

    $in['wordpress_adv_hidden'] = FALSE;

    return $in; 
}