about summary refs log tree commit diff
path: root/app/javascript/flavours/glitch/features/compose/components/dropdown_menu.js
blob: 60fee9b7f9593f12fcda6ec49c684870055e521b (plain) (blame)
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
//  Package imports.
import PropTypes from 'prop-types';
import React from 'react';
import spring from 'react-motion/lib/spring';
import Toggle from 'react-toggle';
import ImmutablePureComponent from 'react-immutable-pure-component';
import classNames from 'classnames';

//  Components.
import Icon from 'flavours/glitch/components/icon';

//  Utils.
import { withPassive } from 'flavours/glitch/util/dom_helpers';
import Motion from 'flavours/glitch/util/optional_motion';
import { assignHandlers } from 'flavours/glitch/util/react_helpers';

//  The spring to use with our motion.
const springMotion = spring(1, {
  damping: 35,
  stiffness: 400,
});

//  The component.
export default class ComposerOptionsDropdownContent extends React.PureComponent {

  static propTypes = {
    items: PropTypes.arrayOf(PropTypes.shape({
      icon: PropTypes.string,
      meta: PropTypes.node,
      name: PropTypes.string.isRequired,
      on: PropTypes.bool,
      text: PropTypes.node,
    })),
    onChange: PropTypes.func.isRequired,
    onClose: PropTypes.func.isRequired,
    style: PropTypes.object,
    value: PropTypes.string,
    openedViaKeyboard: PropTypes.bool,
  };

  static defaultProps = {
    style: {},
  };

  state = {
    mounted: false,
    value: this.props.openedViaKeyboard ? this.props.items[0].name : undefined,
  };

  //  When the document is clicked elsewhere, we close the dropdown.
  handleDocumentClick = (e) => {
    if (this.node && !this.node.contains(e.target)) {
      this.props.onClose();
    }
  }

  //  Stores our node in `this.node`.
  handleRef = (node) => {
    this.node = node;
  }

  //  On mounting, we add our listeners.
  componentDidMount () {
    document.addEventListener('click', this.handleDocumentClick, false);
    document.addEventListener('touchend', this.handleDocumentClick, withPassive);
    if (this.focusedItem) {
      this.focusedItem.focus();
    } else {
      this.node.firstChild.focus();
    }
    this.setState({ mounted: true });
  }

  //  On unmounting, we remove our listeners.
  componentWillUnmount () {
    document.removeEventListener('click', this.handleDocumentClick, false);
    document.removeEventListener('touchend', this.handleDocumentClick, withPassive);
  }

  handleClick = (e) => {
    const name = e.currentTarget.getAttribute('data-index');

    const {
      onChange,
      onClose,
      items,
    } = this.props;

    const { on } = this.props.items.find(item => item.name === name);
    e.preventDefault();  //  Prevents change in focus on click
    if ((on === null || typeof on === 'undefined')) {
      onClose();
    }
    onChange(name);
  }

  // Handle changes differently whether the dropdown is a list of options or actions
  handleChange = (name) => {
    if (this.props.value) {
      this.props.onChange(name);
    } else {
      this.setState({ value: name });
    }
  }

  handleKeyDown = e => {
    const { items } = this.props;
    const name = e.currentTarget.getAttribute('data-index');
    const index = items.findIndex(item => {
      return (item.name === name);
    });
    let element;

    switch(e.key) {
    case 'Escape':
      this.props.onClose();
      break;
    case 'Enter':
    case ' ':
      this.handleClick(e);
      break;
    case 'ArrowDown':
      element = this.node.childNodes[index + 1];
      if (element) {
        element.focus();
        this.handleChange(element.getAttribute('data-index'));
      }
      break;
    case 'ArrowUp':
      element = this.node.childNodes[index - 1];
      if (element) {
        element.focus();
        this.handleChange(element.getAttribute('data-index'));
      }
      break;
    case 'Tab':
      if (e.shiftKey) {
        element = this.node.childNodes[index - 1] || this.node.lastChild;
      } else {
        element = this.node.childNodes[index + 1] || this.node.firstChild;
      }
      if (element) {
        element.focus();
        this.handleChange(element.getAttribute('data-index'));
        e.preventDefault();
        e.stopPropagation();
      }
      break;
    case 'Home':
      element = this.node.firstChild;
      if (element) {
        element.focus();
        this.handleChange(element.getAttribute('data-index'));
      }
      break;
    case 'End':
      element = this.node.lastChild;
      if (element) {
        element.focus();
        this.handleChange(element.getAttribute('data-index'));
      }
      break;
    }
  }

  setFocusRef = c => {
    this.focusedItem = c;
  }

  renderItem = (item) => {
    const { name, icon, meta, on, text } = item;

    const active = (name === (this.props.value || this.state.value));

    const computedClass = classNames('composer--options--dropdown--content--item', {
      active,
      lengthy: meta,
      'toggled-off': !on && on !== null && typeof on !== 'undefined',
      'toggled-on': on,
      'with-icon': icon,
    });

    let prefix = null;

    if (on !== null && typeof on !== 'undefined') {
      prefix = <Toggle checked={on} onChange={this.handleClick} />;
    } else if (icon) {
      prefix = <Icon className='icon' fixedWidth id={icon} />
    }

    return (
      <div
        className={computedClass}
        onClick={this.handleClick}
        onKeyDown={this.handleKeyDown}
        role='option'
        tabIndex='0'
        key={name}
        data-index={name}
        ref={active ? this.setFocusRef : null}
      >
        {prefix}

        <div className='content'>
          <strong>{text}</strong>
          {meta}
        </div>
      </div>
    );
  }

  //  Rendering.
  render () {
    const { mounted } = this.state;
    const {
      items,
      onChange,
      onClose,
      style,
    } = this.props;

    //  The result.
    return (
      <Motion
        defaultStyle={{
          opacity: 0,
          scaleX: 0.85,
          scaleY: 0.75,
        }}
        style={{
          opacity: springMotion,
          scaleX: springMotion,
          scaleY: springMotion,
        }}
      >
        {({ opacity, scaleX, scaleY }) => (
          // It should not be transformed when mounting because the resulting
          // size will be used to determine the coordinate of the menu by
          // react-overlays
          <div
            className='composer--options--dropdown--content'
            ref={this.handleRef}
            role='listbox'
            style={{
              ...style,
              opacity: opacity,
              transform: mounted ? `scale(${scaleX}, ${scaleY})` : null,
            }}
          >
            {!!items && items.map(item => this.renderItem(item))}
          </div>
        )}
      </Motion>
    );
  }

}