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Android: Expose textBreakStrategy on Text and TextInput

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Summary:
Android has a text API called breakStrategy for controlling how paragraphs are broken up into lines. For example, some modes support automatically hyphenating words so a word can be split across lines while others do not.

One source of complexity is that Android provides different defaults for `breakStrategy` for `TextView` vs `EditText`. `TextView`'s default is `BREAK_STRATEGY_HIGH_QUALITY` while `EditText`'s default is `BREAK_STRATEGY_SIMPLE`.

In addition to exposing `textBreakStrategy`, this change also fixes a couple of rendering glitches with `Text` and `TextInput`. `TextView` and `EditText` have different default values for `breakStrategy` and `hyphenationFrequency` than `StaticLayout`. Consequently, we were using different parameters for measuring and rendering. Whenever measuring and rendering parameters are inconsistent, it can result in visual glitches such as the text taking up too much space or being clipped.

This change fixes these inconsistencies by setting `breakStrategy` and `hyphenat
Closes https://github.com/facebook/react-native/pull/11007

Differential Revision: D4227495

Pulled By: lacker

fbshipit-source-id: c2d96bd0ddc7bd315fda016fb4f1b5108a2e35cf
This commit is contained in:
Adam Comella
2016-12-16 01:19:16 -08:00
committed by Facebook Github Bot
parent c93643c079
commit c0ea23cfb0
8 changed files with 151 additions and 13 deletions
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7
Libraries/Components/TextInput/TextInput.js
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@@ -330,6 +330,12 @@ const TextInput = React.createClass({
* The default value is `false`.
*/
multiline: PropTypes.bool,
/**
* Set text break strategy on Android API Level 23+, possible values are `simple`, `highQuality`, `balanced`
* The default value is `simple`.
* @platform android
*/
textBreakStrategy: React.PropTypes.oneOf(['simple', 'highQuality', 'balanced']),
/**
* Callback that is called when the text input is blurred.
*/
@@ -724,6 +730,7 @@ const TextInput = React.createClass({
text={this._getText()}
children={children}
disableFullscreenUI={this.props.disableFullscreenUI}
textBreakStrategy={this.props.textBreakStrategy}
/>;
return (