Juan Tejada b223a38b73 fix(mail-merge/preview): Don't unmount components when toggling preview ... Summary: See edgehill revision: https://phab.nylas.com/D3160 - CustomContenteditableComponents.get now takes a single component to register as an overlaid component, and this component will be passed a prop `{isPreview: true}` when it is meant to be rendered as a preview. Update scheduler and mail-merge to use this new api. - This prevents the mail merge state from being incorrectly updated when we toggled preview mode -- previously, it believed that the tokens had been unmounted when toggling preview, so they were incorrectly removed from the mail merge state. - Additionally, makes sure that tokens are correctly added to the mail merge state whenever a token is rendered via componentDidMount -- previously, we only added the token to state when a token was dropped on the contenteditable, however, a token might be pasted or an anchor node might be added by any other means, in which case we want the mail merge state to reflect that. (Adds docs about this) Test Plan: Manual Reviewers: jackie, evan Reviewed By: jackie, evan Differential Revision: https://phab.nylas.com/D3161		2016-08-16 13:21:41 -07:00
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composer.less	fix(mail-merge/preview): Don't unmount components when toggling preview	2016-08-16 13:21:41 -07:00