How to set default font family and size in draft.js

I am learning draft.js editor and can't find how to configure default font-family and font size.

I tried this way:

let editorState = EditorState.createEmpty();

let newState = RichUtils.toggleBlockType(
    editorState,
    'aligncenter'
);

newState = RichUtils.toggleInlineStyle(
    newState,
    'FONT_SIZE_36'
);
newState = RichUtils.toggleInlineStyle(
    newState,
    'TIMES_NEW_ROMAN'
);

What is weird, aligncenter style works fine, but font size and family disappears when component gets focus.

Can you please suggest correct way how to do it?

Solution

Using RichUtils.toggleInlineStyle() is for modifying the currently selected range of text (or setting the inline style for text that will be entered at the current cursor position). There is not a way to use this to set the default inline styles for the entire document (nor is this recommended).

To get default styles, you should use CSS and set the styles you want for the entire editor. Then you should override those styles for specific text ranges using toggleInlineStyle when the user wants a non-default style (for instance selecting font-size from a dropdown).

Here's the catch. Currently you can pre-define these inline styles using styleMap but you can't really create them on-the-fly as a user chooses an arbitrary font-family (or size or color).

I have been struggling with this also while trying to implement a color-picker for react-rte.org.

(Technically, you can add styles on the fly, but it won't trigger a re-render, so that's not really usable.)

There is an open issue for this here: https://github.com/facebook/draft-js/issues/52

I expect this will be resolved within a week or so and I can edit this answer with example code to accomplish what you're after.