All files / app/assets/javascripts/test_utils simulate_drag.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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
function simulateEvent(el, type, options = {}) {
  let event;
  if (!el) return null;
 
  if (/^(pointer|mouse)/.test(type)) {
    event = el.ownerDocument.createEvent('MouseEvent');
    event.initMouseEvent(
      type,
      true,
      true,
      el.ownerDocument.defaultView,
      options.button,
      options.screenX,
      options.screenY,
      options.clientX,
      options.clientY,
      options.ctrlKey,
      options.altKey,
      options.shiftKey,
      options.metaKey,
      options.button,
      el,
    );
  } else {
    event = el.ownerDocument.createEvent('CustomEvent');
 
    event.initCustomEvent(
      type,
      true,
      true,
      el.ownerDocument.defaultView,
      options.button,
      options.screenX,
      options.screenY,
      options.clientX,
      options.clientY,
      options.ctrlKey,
      options.altKey,
      options.shiftKey,
      options.metaKey,
      options.button,
      el,
    );
 
    event.dataTransfer = {
      data: {},
 
      setData(key, val) {
        this.data[key] = val;
      },
 
      getData(key) {
        return this.data[key];
      },
    };
  }
 
  if (el.dispatchEvent) {
    el.dispatchEvent(event);
  } else if (el.fireEvent) {
    el.fireEvent(`on${type}`, event);
  }
 
  return event;
}
 
function isLast(target) {
  const el =
    typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
  const { children } = el;
 
  return children.length - 1 === target.index;
}
 
function getTarget(target) {
  const el =
    typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
  const { children } = el;
 
  return (
    children[target.index] ||
    children[target.index === 'first' ? 0 : -1] ||
    children[target.index === 'last' ? children.length - 1 : -1] ||
    el
  );
}
 
function getRect(el) {
  const rect = el.getBoundingClientRect();
  const width = rect.right - rect.left;
  const height = rect.bottom - rect.top + 10;
 
  return {
    x: rect.left,
    y: rect.top,
    cx: rect.left + width / 2,
    cy: rect.top + height / 2,
    w: width,
    h: height,
    hw: width / 2,
    wh: height / 2,
  };
}
 
export default function simulateDrag(options) {
  const { to, from } = options;
  to.el = to.el || from.el;
 
  const fromEl = getTarget(from);
  const toEl = getTarget(to);
  const firstEl = getTarget({
    el: to.el,
    index: 'first',
  });
  const lastEl = getTarget({
    el: options.to.el,
    index: 'last',
  });
 
  const fromRect = getRect(fromEl);
  const toRect = getRect(toEl);
  const firstRect = getRect(firstEl);
  const lastRect = getRect(lastEl);
 
  const duration = options.duration || 1000;
 
  simulateEvent(fromEl, 'pointerdown', {
    button: 0,
    clientX: fromRect.cx,
    clientY: fromRect.cy,
  });
 
  if (options.ontap) options.ontap();
  window.SIMULATE_DRAG_ACTIVE = 1;
 
  if (options.to.index === 0) {
    toRect.cy = firstRect.y;
  } else if (isLast(options.to)) {
    toRect.cy = lastRect.y + lastRect.h + 50;
  }
 
  let startTime;
 
  // Called within dragFn when the drag should finish
  const finishFn = () => {
    if (options.ondragend) options.ondragend();
 
    if (options.performDrop) {
      simulateEvent(toEl, 'mouseup');
    }
 
    window.SIMULATE_DRAG_ACTIVE = 0;
  };
 
  const dragFn = (timestamp) => {
    if (!startTime) {
      startTime = timestamp;
    }
 
    const elapsed = timestamp - startTime;
 
    // Make sure that progress maxes at 1
    const progress = Math.min(elapsed / duration, 1);
    const x = fromRect.cx + (toRect.cx - fromRect.cx) * progress;
    const y = fromRect.cy + (toRect.cy - fromRect.cy + options.extraHeight) * progress;
    const overEl = fromEl.ownerDocument.elementFromPoint(x, y);
 
    simulateEvent(overEl, 'pointermove', {
      clientX: x,
      clientY: y,
    });
 
    if (progress >= 1) {
      // finish on next frame, so we can pause in the correct position for a frame
      requestAnimationFrame(finishFn);
    } else {
      requestAnimationFrame(dragFn);
    }
  };
 
  // Start the drag animation
  requestAnimationFrame(dragFn);
 
  return {
    target: fromEl,
    fromList: fromEl.parentNode,
    toList: toEl.parentNode,
  };
}