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Fix getting started link #1
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Thanks for the heads up! |
facebook-github-bot
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Summary: bypass-lint ignore-conflict-markers ignore-signed-source ignore-nocommit Reviewed By: avikchaudhuri fbshipit-source-id: 7aec3d925c8b0c4d9b45c372d99ab67179ad2ece
facebook-github-bot
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Feb 16, 2018
Summary: **tldr;** Handlers can get called after cWU and before cDU, and they use the cached 'latestEditorState'. For them to get the fresh version of the state, we need to update 'latestEditorState' in 'render' because that happens before the handlers get called. **The whole story;** We are trying to remove cWU from `DraftEditor.react.js`. One thing which currently happens there is that `latestEditorState` gets set to the nextProps.editorState, so whatever is passed in by the parent. For more context on the initial attempt at changing this, see https://our.intern.facebook.com/intern/diff/D6873303/ This change introduced one bug that manifested in various ways - see T26034821 and T26020049. I'll focus on T26020049, which broke `<AdsBulkTokenizedTextInputWithFieldsSelector>`. `<AdsBulkTok...FieldsSelection>` has a button for adding a new token, and when you hit that button it passes `<DraftEditor>` an updated editorState as a prop. This triggers render #1, and during that render we update the browser selection, which triggers `focus` and `blur` events. These each trigger another render of `<DraftEditor>`; renders #2 and #3. Here is how it looks on a timeline: ``` render #1 + | | cWU -> latestEditorState = FRESH_STATE | | render -> this.props.editorState = FRESH_STATE | + | | | +--> triggers 'focus' event, calling 'handleFocus' with latestEditorState | + | | +>cDU fires | the 'handleFocus' call schedules render #2 | with latestEditorState, which is FRESH_STATE | render #2 <--------+ + | | cWU -> latestEditorState = FRESH_STATE | | render -> this.props.editorState = FRESH_STATE | +>cDU fires ``` When we move the update of latestEditorState to cDM, things go awry like this; ``` render #1 + | | cWU -> Nothing ... latestEditorState = STALE_STATE :( | | render -> this.props.editorState = FRESH_STATE | + | | | +--> triggers 'focus' event, calling 'handleFocus' with latestEditorState | + | | +>cDU -> latestEditorState = FRESH_STATE | the 'handleFocus' call schedules render #2 | with latestEditorState, which is STALE_STATE :( | render #2 <--------------------------------------+ + | | cWU -> nothing updates | | render -> this.props.editorState = STALE_STATE :( because this was passed in above | +>cDU fires and resets latestEditorState = STALE_STATE :( ``` So we can fix things by updating latestEditorState inside the `render` method, like so; ``` render #1 + | | cWU -> Nothing ... latestEditorState = STALE_STATE :( | | render -> this.props.editorState = FRESH_STATE | + *and* set latestEditorState = FRESH_STATE | | | | +--> triggers 'focus' event, calling 'handleFocus' with latestEditorState | + | | +>cDU -> latestEditorState = FRESH_STATE | the 'handleFocus' call schedules render #2 | with latestEditorState, which is FRESH_STATE | render #2 <--------------------------------------+ + | | cWU -> nothing updates | | render -> this.props.editorState = FRESH_STATE which was passed in above | +>cDU fires and resets latestEditorState = FRESH_STATE ``` One possible issue would be if `render` fired and then was never completed, in async. mode, but since Draft is intended to always be run in sync. mode I'm not worried about that. Reviewed By: mitermayer Differential Revision: D6994261 fbshipit-source-id: 80986b853a57f64aa5aafbe667b4d94171d5271c
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This link is broken again — thought of commenting here instead of creating a new issue. |
burdell
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Aug 27, 2018
notherno
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in pixiv/draft-js
Oct 25, 2018
* Add state for editor to restore partial blocks * Partially update block with focus * Update all blocks in selection * Add console.log to debug * Use Array.from() * Fix condition for invariant * Update single block, otherwise whole contents * Remove console.log * Remove invariant * Pass options to update editorState * Inverse condition and add comment * Add comments and use default editorState
pablopunk
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Sep 17, 2020
…erscript Merge draft-js/master
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The "Learn how to use Draft.js in your own project." link is broken.
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