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| 1 <!DOCTYPE html> |
| 2 <script src='../resources/testharness.js'></script> |
| 3 <script src='../resources/testharnessreport.js'></script> |
| 4 <script src='resources/shadow-dom.js'></script> |
| 5 <style> |
| 6 .container { position: relative; } |
| 7 </style> |
| 8 |
| 9 <!-- |
| 10 When both the context object and the real offset parent is in the same |
| 11 node tree, offsetParent doesn't perform any adjustment. |
| 12 --> |
| 13 <div id='host_open0'> |
| 14 <template data-mode='open' data-expose-as='root_open0'> |
| 15 <div id='container' style='position: relative;'> |
| 16 <div id='inner_node'>X</div> |
| 17 </div> |
| 18 </template> |
| 19 </div> |
| 20 |
| 21 <div id='host_closed0'> |
| 22 <template data-mode='closed' data-expose-as='root_closed0'> |
| 23 <div id='container' style='position: relative;'> |
| 24 <div id='inner_node'>X</div> |
| 25 </div> |
| 26 </template> |
| 27 </div> |
| 28 |
| 29 <script> |
| 30 test(() => { |
| 31 convertTemplatesToShadowRootsWithin(host_open0); |
| 32 let container = root_open0.querySelector('#container'); |
| 33 let inner_node = root_open0.querySelector('#inner_node'); |
| 34 assert_equals(inner_node.offsetParent, container); |
| 35 }, 'offsetParent should return node in the same node tree in open shadow root.')
; |
| 36 |
| 37 test(() => { |
| 38 convertTemplatesToShadowRootsWithin(host_closed0); |
| 39 let container = root_closed0.querySelector('#container'); |
| 40 let inner_node = root_closed0.querySelector('#inner_node'); |
| 41 assert_equals(inner_node.offsetParent, container); |
| 42 }, 'offsetParent should return node in the same node tree in closed shadow root.
'); |
| 43 </script> |
| 44 |
| 45 <!-- |
| 46 Even when the real offsetParent is in a closed shadow tree, |
| 47 if it is unclosed to the context object, that parent should be returned. |
| 48 --> |
| 49 <div id='host_open1'> |
| 50 <template data-mode='open' data-expose-as='root_open1'> |
| 51 <div id='inner_host' style='position: relative'> |
| 52 <template data-mode='closed' data-expose-as='root_closed_inner1'> |
| 53 <div id='inner_node'>X</div> |
| 54 </template> |
| 55 </div> |
| 56 </template> |
| 57 </div> |
| 58 |
| 59 <div id='host_closed1'> |
| 60 <template data-mode='closed' data-expose-as='root_closed1'> |
| 61 <div id='inner_host' style='position: relative;'> |
| 62 <template data-mode='open' data-expose-as='root_open_inner1'> |
| 63 <div id='inner_node'>X</div> |
| 64 </template> |
| 65 </div> |
| 66 </template> |
| 67 </div> |
| 68 |
| 69 <script> |
| 70 test(() => { |
| 71 convertTemplatesToShadowRootsWithin(host_open1); |
| 72 let inner_host = root_open1.querySelector('#inner_host'); |
| 73 let inner_node = root_closed_inner1.querySelector('#inner_node'); |
| 74 assert_equals(inner_node.offsetParent, inner_host); |
| 75 }, 'offsetParent should return an unclosed node in a open shadow from closed sha
dow.'); |
| 76 |
| 77 test(() => { |
| 78 convertTemplatesToShadowRootsWithin(host_closed1); |
| 79 let inner_host = root_closed1.querySelector('#inner_host'); |
| 80 let inner_node = root_open_inner1.querySelector('#inner_node'); |
| 81 assert_equals(inner_node.offsetParent, inner_host); |
| 82 }, 'offsetParent should return an unclosed node in a closed shadow from open sha
dow.'); |
| 83 </script> |
| 84 |
| 85 <!-- |
| 86 #host_open2 and #host_closed2 have the same structure, and #target_open2 / |
| 87 #target_closed2 are slotted into each shadow slot, then real offsetParent would |
| 88 be in the shadow. For the closed shadow, such element should not leak to the |
| 89 light DOM, so it is adjusted to the nearest unclosed offsetParent. |
| 90 |
| 91 See also |
| 92 https://github.com/w3c/webcomponents/issues/497 |
| 93 https://github.com/w3c/csswg-drafts/issues/159 |
| 94 --> |
| 95 <div id='host_open2' class='container'> |
| 96 <template data-mode='open' data-expose-as='root_open2'> |
| 97 <div id='container_open' style='position: relative;'> |
| 98 <slot name='x'></slot> |
| 99 </div> |
| 100 </template> |
| 101 <span id='target_open2' slot='x'>X</span> |
| 102 </div> |
| 103 |
| 104 <div id='host_closed2' class='container'> |
| 105 <template data-mode='closed' data-expose-as='root_closed2'> |
| 106 <div id='container_closed' style='position: relative;'> |
| 107 <slot name='x'></slot> |
| 108 </div> |
| 109 </template> |
| 110 <span id='target_closed2' slot='x'>X</span> |
| 111 </div> |
| 112 |
| 113 <script> |
| 114 test(() => { |
| 115 convertTemplatesToShadowRootsWithin(host_open2); |
| 116 convertTemplatesToShadowRootsWithin(host_closed2); |
| 117 |
| 118 assert_equals(target_open2.offsetParent.id, 'container_open'); |
| 119 assert_equals(target_closed2.offsetParent.id, 'host_closed2'); |
| 120 }, 'offsetParent should return an unclosed node.'); |
| 121 </script> |
| 122 |
| 123 <!-- |
| 124 Check if offsetParent can properly traverse up to find unclosed node. |
| 125 In the following example, #target_closed3 will distributed to slot y, |
| 126 but its offsetParent should neither return #inner_node nor #inner_host. |
| 127 --> |
| 128 <div id='host_closed3' class='container'> |
| 129 <template data-mode='closed' data-expose-as='root_closed3'> |
| 130 <div id='inner_host' style='position: relative;'> |
| 131 <template data-mode='closed' data-expose-as='root_closed_inner3'> |
| 132 <div id='inner_node' style='position: relative;'> |
| 133 <slot name='y'></slot> |
| 134 </div> |
| 135 </template> |
| 136 <slot name='x' slot='y'></slot> |
| 137 </div> |
| 138 </template> |
| 139 <span id='target_closed3' slot='x'>X</span> |
| 140 </div> |
| 141 |
| 142 <script> |
| 143 test(() => { |
| 144 convertTemplatesToShadowRootsWithin(host_closed3); |
| 145 let slot_y = root_closed_inner3.querySelector('slot[name=y]'); |
| 146 assert_array_equals(slot_y.assignedNodes({flatten: true}), [target_closed3]); |
| 147 assert_equals(target_closed3.offsetParent.id, 'host_closed3'); |
| 148 }, 'offsetParent should skip any non-unclosed nodes.'); |
| 149 </script> |
| 150 |
| 151 <!-- |
| 152 Yet another test case if the check for unclosed node is working as expected. |
| 153 inner_node.offsetParent should neither return #host_closed4 (unclosed, but its |
| 154 position is static) nor #host_open4 (as #container is the closer unclosed parent
). |
| 155 As #container is unclosed to #inner_node, inner_node.offsetParent should return |
| 156 #container. |
| 157 --> |
| 158 <div id='host_open4' class='container'> |
| 159 <template data-mode='open' data-expose-as='root_open4'> |
| 160 <div id='container' style='position: relative;'> |
| 161 <slot name='x'></slot> |
| 162 </div> |
| 163 </template> |
| 164 <div id='host_closed4' slot='x'> |
| 165 <template data-mode='closed' data-expose-as='root_closed4'> |
| 166 <div id='inner_node'>X</div> |
| 167 </template> |
| 168 </div> |
| 169 </div> |
| 170 |
| 171 <script> |
| 172 test(() => { |
| 173 convertTemplatesToShadowRootsWithin(host_open4); |
| 174 let container = root_open4.querySelector('#container'); |
| 175 let inner_node = root_closed4.querySelector('#inner_node'); |
| 176 assert_equals(inner_node.offsetParent, container); |
| 177 }, 'offsetParent should return node in the open shadow root because it is unclos
ed.'); |
| 178 </script> |
| 179 |
| 180 <!-- |
| 181 Quoted from https://github.com/w3c/csswg-drafts/issues/159 |
| 182 When the real offsetParent is 'position: fixed' but not unclosed, do not travers
e up to |
| 183 find unclosed ancestor, but should return null. If it is unclosed, return it. |
| 184 --> |
| 185 <div id='host_closed5'> |
| 186 <template data-mode='closed'> |
| 187 <div id='container' style='position: fixed;'> |
| 188 <slot name='x'></slot> |
| 189 </div> |
| 190 </template> |
| 191 <div id='inner_node5' slot='x'>X</div> |
| 192 </div> |
| 193 |
| 194 <div id='host_open5'> |
| 195 <template data-mode='open'> |
| 196 <div id='container' style='position: fixed;'> |
| 197 <slot name='x'></slot> |
| 198 </div> |
| 199 </template> |
| 200 <div id='inner_node5_open' slot='x'>X</div> |
| 201 </div> |
| 202 |
| 203 <script> |
| 204 test(() => { |
| 205 convertTemplatesToShadowRootsWithin(host_closed5); |
| 206 assert_equals(inner_node5.offsetParent, null); |
| 207 |
| 208 convertTemplatesToShadowRootsWithin(host_open5); |
| 209 let container = host_open5.shadowRoot.querySelector('#container'); |
| 210 assert_equals(inner_node5_open.offsetParent, container); |
| 211 }, 'offsetParent should return null in case position:fixed offsetParent is not u
nclosed.'); |
| 212 </script> |
| 213 |
| 214 <!-- |
| 215 Check if all position: static elements are properly skipped in searching offsetP
arent. |
| 216 --> |
| 217 <div id='host_open6'> |
| 218 <template data-mode='open' data-expose-as='root_open6'> |
| 219 <div id='static1'> |
| 220 <div id='relative' style='position: relative;'> |
| 221 <div id='static2'> |
| 222 <template data-mode='open'> |
| 223 <div id='inner-static'> |
| 224 <slot name='y'></slot> |
| 225 </div> |
| 226 </template> |
| 227 <slot name='x' slot='y'></slot> |
| 228 </div> |
| 229 </div> |
| 230 </div> |
| 231 </template> |
| 232 <div id='lightdom-static' slot='x'> |
| 233 <div id='inner_node6'>X</div> |
| 234 </div> |
| 235 </div> |
| 236 |
| 237 <script> |
| 238 test(() => { |
| 239 convertTemplatesToShadowRootsWithin(host_open6); |
| 240 assert_not_equals(inner_node6.offsetParent, null); |
| 241 let relative = root_open6.querySelector('#relative'); |
| 242 assert_equals(inner_node6.offsetParent, relative); |
| 243 }, 'All position:static elements should be skipped for offsetParent.'); |
| 244 </script> |
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Chromium Code Reviews
Issue 2051703002:
Implement closed shadow adjustment for Element.offsetParent (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master