summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/permissions-policy/experimental-features/vertical-scroll-touch-block-manual.tentative.html
blob: 341e5439349c9592b0374db20a9cbd28080d130c (plain)
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
<!doctype html>
<title>vertical-scroll test for touch-action</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/permissions-policy/experimental-features/resources/common.js"></script>
<script src="/permissions-policy/experimental-features/resources/vertical-scroll.js"></script>
<style>
html, body {
  height: 100%;
  width: 100%;
}

iframe {
  width: 90%;
  height: 90%;
  margin: 0;
  padding: 0;
}

.spacer {
  width: 100%;
  height: 100%;
  margin: 100%;
}
</style>
<iframe></iframe>
<br/>
<p>Spacers below to make page scrollable</p>
<br/>
<div class="spacer"></div>
<div class="spacer"></div>
<p> EOF </p>

<script>
  "use strict";

  let url = url_base + "vertical-scroll-touch-block.html";
  let iframeElement = document.querySelector("iframe");

  // Wait for the helper scripts to load.
  promise_test(async() => {
    if (window.input_api_ready)
      return Promise.resolve();
    await new Promise( (r) => {
      window.resolve_on_input_api_ready = r;
    });

  }, "Make sure input injection API is ready.");

  // Sanity-check: Verify we can scroll using the test-API. The <iframe> with no
  // query arguments would not preventDefault() any events.
  promise_test(async() => {
    window.scrollTo(0, 0);
    await loadUrlInIframe(iframeElement, url);

    await inject_scroll("down");
    assert_greater_than(window.scrollY, 0, "Page must have scrolled down.");

    await inject_scroll("right");
    assert_greater_than(window.scrollX, 0, "Page must have scrolled right.");
  }, "Verify that the page normally scrolls.");

  // Enable 'vertical-scroll': Blocking "touchstart" can block scrolling.
  promise_test(async() => {
    window.scrollTo(0, 0);
    setFeatureState(iframeElement, "vertical-scroll", "*");
    await loadUrlInIframe(iframeElement, url);
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: true
                                    });

    await inject_scroll("down");
    assert_equals(window.scrollY,
                  0,
                  "Main frame must not scroll vertically.");
  }, "Calling 'preventDefault' on 'touchstart' blocks vertical scroll when " +
     " the feature is enabled.");

  // Disable 'vertical-scroll': Blocking "touchstart" cannot block vertical
  // scroll.
  promise_test(async() => {
    window.scrollTo(0, 0);
    setFeatureState(iframeElement, "vertical-scroll", "'none'");
    await loadUrlInIframe(iframeElement, url);
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: true
                                    });

    await inject_scroll("down");
    assert_greater_than(window.scrollY,
                        0,
                        "Main frame must scroll vertically.");

    // Horizontal scrolling must still be blocked.
    window.scrollTo(0, 0);
    await inject_scroll("right");
    assert_equals(window.scrollX,
                  0,
                  "Main frame must not scroll horizontally.");
  }, "When feature is disabled, calling 'preventDefault' on 'touchstart' does" +
     " not block vertical scroll, but still bocks horizontal scroll.");

  // Enable 'vertical-scroll': Blocking "touchmove" can block scrolling.
  promise_test(async() => {
    // Make sure <window> can scroll both towards right and bottom.
    window.scrollTo(0, 0);
    setFeatureState(iframeElement, "vertical-scroll", "*");
    await loadUrlInIframe(iframeElement, url);
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchmove",
                                      query: "#blocker",
                                      prevent: true
                                    });

    await inject_scroll("down");
    assert_equals(window.scrollY,
                  0,
                  "Main frame must not scroll vertically");
  }, "Calling 'preventDefault' on 'touchmove' blocks vertical scroll when " +
     "the feature is enabled.");

  // Disable 'vertical-scroll': Blocking "touchmove" cannot block vertical
  // scroll.
  promise_test(async() => {
    window.scrollTo(0, 0);
    setFeatureState(iframeElement, "vertical-scroll", "'none'");
    await loadUrlInIframe(iframeElement, url);
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchmove",
                                      query: "#blocker",
                                      prevent: true
                                    });
    await new Promise((r) => {
      window.setTimeout(r, 100);
    });

    await inject_scroll("down");
    assert_greater_than(window.scrollY,
                        0,
                        "Main frame must scroll vertically.");
  }, "When feature is disabled, calling 'preventDefault' on 'touchmove' does" +
     " not block vertical scroll.");

  // Disable 'vertical-scroll': Add a non-preventing handler, and then a
  // preventing handler and verify vertical scroll is possible and horizontal
  // is blocked.
  promise_test(async() => {
    setFeatureState(iframeElement, "vertical-scroll", "'none'");
    await loadUrlInIframe(iframeElement, url);

    // Add a non-blocking handler.
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: false
                                    });

    window.scrollTo(0, 0);
    await inject_scroll("down");
    assert_greater_than(window.scrollY, 0, "Page must have scrolled down.");

    window.scrollTo(0, 0);
    await inject_scroll("right");
    assert_greater_than(window.scrollX, 0, "Page must have scrolled right.");

    // Add a blocking handler.
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: true
                                    });
    window.scrollTo(0, 0);
    await inject_scroll("down");
    assert_greater_than(window.scrollY,
                        0,
                        "Page must have scrolled down (preventing handler).");

    window.scrollTo(0, 0);
    await inject_scroll("right");
    assert_equals(window.scrollX,
                  0,
                  "Page must not have scrolled horizontally.");
  }, "Verify that starting with a non-preventing listener and then switching" +
     " to a preventing one works as intended.");

  // Disable 'vertical-scroll': A preventing 'touchstart' handler does not allow
  // other multi-touch actions such as 'pinch-zoom'.
  promise_test(async() => {
    assert_true(!!window.visualViewport,
                "'visualViewport' is needed for this test.");

    setFeatureState(iframeElement, "vertical-scroll", "'none'");
    await loadUrlInIframe(iframeElement, url);
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: false
                                    });

    // Sanity check: Pinch zoom in should work since 'touchstart' is not
    // preventing.
    let current_scale_factor = window.visualViewport.scale;
    await inject_zoom("in");
    let new_scale_factor = window.visualViewport.scale;
    assert_greater_than(
        new_scale_factor,
        current_scale_factor,
        "Pinch zoom should work since 'touchstart' is not prevented.");

    // Add a preventing handler and verify pinch zoom is now blocked.
    await sendMessageAndGetResponse(iframeElement.contentWindow,
                                    {
                                      event_type: "touchstart",
                                      query: "#blocker",
                                      prevent: true
                                    });
    current_scale_factor = new_scale_factor;
    await inject_zoom("out");
    new_scale_factor = window.visualViewport.scale;
    assert_equals(
        new_scale_factor,
        current_scale_factor,
        "Pinch zoom must be blocked.");
  }, "Verify that pinch zoom is blocked in frames with 'vertical-scroll' none'" +
     " where 'touchstart' is prevent defaulted.");
</script>