-
Notifications
You must be signed in to change notification settings - Fork 24.1k
/
Text.js
331 lines (316 loc) · 10.7 KB
/
Text.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule Text
* @flow
*/
'use strict';
const NativeMethodsMixin = require('react/lib/NativeMethodsMixin');
const Platform = require('Platform');
const React = require('React');
const ReactNativeViewAttributes = require('ReactNativeViewAttributes');
const StyleSheetPropType = require('StyleSheetPropType');
const TextStylePropTypes = require('TextStylePropTypes');
const Touchable = require('Touchable');
const createReactNativeComponentClass =
require('react/lib/createReactNativeComponentClass');
const merge = require('merge');
const stylePropType = StyleSheetPropType(TextStylePropTypes);
const viewConfig = {
validAttributes: merge(ReactNativeViewAttributes.UIView, {
isHighlighted: true,
numberOfLines: true,
lineBreakMode: true,
allowFontScaling: true,
selectable: true,
}),
uiViewClassName: 'RCTText',
};
/**
* A React component for displaying text.
*
* `Text` supports nesting, styling, and touch handling.
*
* In the following example, the nested title and body text will inherit the `fontFamily` from
*`styles.baseText`, but the title provides its own additional styles. The title and body will
* stack on top of each other on account of the literal newlines:
*
* ```ReactNativeWebPlayer
* import React, { Component } from 'react';
* import { AppRegistry, Text, StyleSheet } from 'react-native';
*
* class TextInANest extends Component {
* constructor(props) {
* super(props);
* this.state = {
* titleText: "Bird's Nest",
* bodyText: 'This is not really a bird nest.'
* };
* }
*
* render() {
* return (
* <Text style={styles.baseText}>
* <Text style={styles.titleText} onPress={this.onPressTitle}>
* {this.state.titleText}<br /><br />
* </Text>
* <Text numberOfLines={5}>
* {this.state.bodyText}
* </Text>
* </Text>
* );
* }
* }
*
* const styles = StyleSheet.create({
* baseText: {
* fontFamily: 'Cochin',
* },
* titleText: {
* fontSize: 20,
* fontWeight: 'bold',
* },
* });
*
* // App registration and rendering
* AppRegistry.registerComponent('TextInANest', () => TextInANest);
* ```
*/
const Text = React.createClass({
propTypes: {
/**
* Line Break mode. This can be one of the following values:
*
* - `head` - The line is displayed so that the end fits in the container and the missing text
* at the beginning of the line is indicated by an ellipsis glyph. e.g., "...wxyz"
* - `middle` - The line is displayed so that the beginning and end fit in the container and the
* missing text in the middle is indicated by an ellipsis glyph. "ab...yz"
* - `tail` - The line is displayed so that the beginning fits in the container and the
* missing text at the end of the line is indicated by an ellipsis glyph. e.g., "abcd..."
* - `clip` - Lines are not drawn past the edge of the text container.
*
* The default is `tail`.
*
* `numberOfLines` must be set in conjunction with this prop.
*
* > `clip` is working only for iOS
*/
lineBreakMode: React.PropTypes.oneOf(['head', 'middle', 'tail', 'clip']),
/**
* Used to truncate the text with an ellipsis after computing the text
* layout, including line wrapping, such that the total number of lines
* does not exceed this number.
*
* This prop is commonly used with `lineBreakMode`.
*/
numberOfLines: React.PropTypes.number,
/**
* Invoked on mount and layout changes with
*
* `{nativeEvent: {layout: {x, y, width, height}}}`
*/
onLayout: React.PropTypes.func,
/**
* This function is called on press.
*
* e.g., `onPress={() => console.log('1st')}``
*/
onPress: React.PropTypes.func,
/**
* This function is called on long press.
*
* e.g., `onLongPress={this.increaseSize}>``
*/
onLongPress: React.PropTypes.func,
/**
* Lets the user select text, to use the native copy and paste functionality.
*
* @platform android
*/
selectable: React.PropTypes.bool,
/**
* When `true`, no visual change is made when text is pressed down. By
* default, a gray oval highlights the text on press down.
*
* @platform ios
*/
suppressHighlighting: React.PropTypes.bool,
style: stylePropType,
/**
* Used to locate this view in end-to-end tests.
*/
testID: React.PropTypes.string,
/**
* Specifies whether fonts should scale to respect Text Size accessibility setting on iOS. The
* default is `true`.
*
* @platform ios
*/
allowFontScaling: React.PropTypes.bool,
/**
* When set to `true`, indicates that the view is an accessibility element. The default value
* for a `Text` element is `true`.
*
* See the
* [Accessibility guide](/react-native/docs/accessibility.html#accessible-ios-android)
* for more information.
*/
accessible: React.PropTypes.bool,
},
getDefaultProps(): Object {
return {
accessible: true,
allowFontScaling: true,
lineBreakMode: 'tail',
};
},
getInitialState: function(): Object {
return merge(Touchable.Mixin.touchableGetInitialState(), {
isHighlighted: false,
});
},
mixins: [NativeMethodsMixin],
viewConfig: viewConfig,
getChildContext(): Object {
return {isInAParentText: true};
},
childContextTypes: {
isInAParentText: React.PropTypes.bool
},
contextTypes: {
isInAParentText: React.PropTypes.bool
},
/**
* Only assigned if touch is needed.
*/
_handlers: (null: ?Object),
_hasPressHandler(): boolean {
return !!this.props.onPress || !!this.props.onLongPress;
},
/**
* These are assigned lazily the first time the responder is set to make plain
* text nodes as cheap as possible.
*/
touchableHandleActivePressIn: (null: ?Function),
touchableHandleActivePressOut: (null: ?Function),
touchableHandlePress: (null: ?Function),
touchableHandleLongPress: (null: ?Function),
touchableGetPressRectOffset: (null: ?Function),
render(): ReactElement<any> {
let newProps = this.props;
if (this.props.onStartShouldSetResponder || this._hasPressHandler()) {
if (!this._handlers) {
this._handlers = {
onStartShouldSetResponder: (): bool => {
const shouldSetFromProps = this.props.onStartShouldSetResponder &&
this.props.onStartShouldSetResponder();
const setResponder = shouldSetFromProps || this._hasPressHandler();
if (setResponder && !this.touchableHandleActivePressIn) {
// Attach and bind all the other handlers only the first time a touch
// actually happens.
for (const key in Touchable.Mixin) {
if (typeof Touchable.Mixin[key] === 'function') {
(this: any)[key] = Touchable.Mixin[key].bind(this);
}
}
this.touchableHandleActivePressIn = () => {
if (this.props.suppressHighlighting || !this._hasPressHandler()) {
return;
}
this.setState({
isHighlighted: true,
});
};
this.touchableHandleActivePressOut = () => {
if (this.props.suppressHighlighting || !this._hasPressHandler()) {
return;
}
this.setState({
isHighlighted: false,
});
};
this.touchableHandlePress = () => {
this.props.onPress && this.props.onPress();
};
this.touchableHandleLongPress = () => {
this.props.onLongPress && this.props.onLongPress();
};
this.touchableGetPressRectOffset = function(): RectOffset {
return PRESS_RECT_OFFSET;
};
}
return setResponder;
},
onResponderGrant: function(e: SyntheticEvent, dispatchID: string) {
this.touchableHandleResponderGrant(e, dispatchID);
this.props.onResponderGrant &&
this.props.onResponderGrant.apply(this, arguments);
}.bind(this),
onResponderMove: function(e: SyntheticEvent) {
this.touchableHandleResponderMove(e);
this.props.onResponderMove &&
this.props.onResponderMove.apply(this, arguments);
}.bind(this),
onResponderRelease: function(e: SyntheticEvent) {
this.touchableHandleResponderRelease(e);
this.props.onResponderRelease &&
this.props.onResponderRelease.apply(this, arguments);
}.bind(this),
onResponderTerminate: function(e: SyntheticEvent) {
this.touchableHandleResponderTerminate(e);
this.props.onResponderTerminate &&
this.props.onResponderTerminate.apply(this, arguments);
}.bind(this),
onResponderTerminationRequest: function(): bool {
// Allow touchable or props.onResponderTerminationRequest to deny
// the request
var allowTermination = this.touchableHandleResponderTerminationRequest();
if (allowTermination && this.props.onResponderTerminationRequest) {
allowTermination = this.props.onResponderTerminationRequest.apply(this, arguments);
}
return allowTermination;
}.bind(this),
};
}
newProps = {
...this.props,
...this._handlers,
isHighlighted: this.state.isHighlighted,
};
}
if (Touchable.TOUCH_TARGET_DEBUG && newProps.onPress) {
newProps = {
...newProps,
style: [this.props.style, {color: 'magenta'}],
};
}
if (this.context.isInAParentText) {
return <RCTVirtualText {...newProps} />;
} else {
return <RCTText {...newProps} />;
}
},
});
type RectOffset = {
top: number;
left: number;
right: number;
bottom: number;
}
var PRESS_RECT_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
var RCTText = createReactNativeComponentClass(viewConfig);
var RCTVirtualText = RCTText;
if (Platform.OS === 'android') {
RCTVirtualText = createReactNativeComponentClass({
validAttributes: merge(ReactNativeViewAttributes.UIView, {
isHighlighted: true,
}),
uiViewClassName: 'RCTVirtualText',
});
}
module.exports = Text;