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Unified Diff: third_party/WebKit/LayoutTests/shadow-dom/offsetParent.html

Issue 2051703002: Implement closed shadow adjustment for Element.offsetParent (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 6 months ago
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Index: third_party/WebKit/LayoutTests/shadow-dom/offsetParent.html
diff --git a/third_party/WebKit/LayoutTests/shadow-dom/offsetParent.html b/third_party/WebKit/LayoutTests/shadow-dom/offsetParent.html
new file mode 100644
index 0000000000000000000000000000000000000000..734298a55f6ae0eddf498c7d2568375626c76a3f
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/shadow-dom/offsetParent.html
@@ -0,0 +1,175 @@
+<!DOCTYPE html>
+<script src='../resources/testharness.js'></script>
+<script src='../resources/testharnessreport.js'></script>
+<script src='resources/shadow-dom.js'></script>
+<style>
+.container { position: relative; }
+</style>
+
+<!--
+When the context object is in a closed shadow tree, it can return the real
+offset parent above the shadow tree, as it is unclosed.
+-->
+<div id='host_open0'>
+ <template data-mode='open' data-expose-as='root_open0'>
+ <style>.container { position: relative; }</style>
+ <div id='container' class='container'>
+ <div id='inner_node'>X</div>
+ </div>
+ </template>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_open0);
+
+test(() => {
+ let container = root_open0.querySelector('#container');
+ let inner_node = root_open0.querySelector('#inner_node');
+ assert_equals(inner_node.offsetParent, container);
+}, 'offsetParent should return node in the same node tree in open shadow root.');
+</script>
+
+<!--
+When the real offsetParent is in a closed shadow tree, if it is unclosed to the
+context object, that parent should be returned.
+-->
+<div id='host_closed0'>
+ <template data-mode='closed' data-expose-as='root_closed0'>
+ <style>.container { position: relative; }</style>
+ <div id='container' class='container'>
+ <div id='inner_node'>X</div>
+ </div>
+ </template>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_closed0);
+
+test(() => {
+ let container = root_closed0.querySelector('#container');
+ let inner_node = root_closed0.querySelector('#inner_node');
+ assert_equals(inner_node.offsetParent, container);
+}, 'offsetParent should return node in the same node tree in closed shadow root.');
+</script>
+
+<!--
+When the real offsetParent is in a closed shadow tree, if it is unclosed to the
+context object, that parent should be returned.
+-->
+<div id='host_closed1'>
+ <template data-mode='closed' data-expose-as='root_closed1'>
+ <style>.container { position: relative; }</style>
+ <div id='inner_host' class='container'>
+ <template data-mode='open' data-expose-as='root_open_inner1'>
+ <div id='inner_node'>X</div>
+ </template>
+ </div>
+ </template>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_closed1);
+
+test(() => {
+ let inner_host = root_closed1.querySelector('#inner_host');
+ let inner_node = root_open_inner1.querySelector('#inner_node');
+ assert_equals(inner_node.offsetParent, inner_host);
+}, 'offsetParent should return an unclosed node in a closed shadow from open shadow.');
+</script>
+
+<!--
+When the context object is in a closed shadow tree, it can return the real
+offset parent above the shadow tree, as it is unclosed.
+-->
+<div id='host_open1'>
+ <template data-mode='open' data-expose-as='root_open1'>
+ <style>.container { position: relative; }</style>
+ <div id='inner_host' class='container'>
+ <template data-mode='closed' data-expose-as='root_closed_inner1'>
+ <div id='inner_node'>X</div>
+ </template>
+ </div>
+ </template>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_open1);
+
+test(() => {
+ let inner_host = root_open1.querySelector('#inner_host');
+ let inner_node = root_closed_inner1.querySelector('#inner_node');
+ assert_equals(inner_node.offsetParent, inner_host);
+}, 'offsetParent should return an unclosed node in a open shadow from closed shadow.');
+</script>
+
+<!--
+#host_open and #host_closed have the same structure, and #target_open /
+#target_closed are slotted into each shadow slot, then real offsetParent would
+be in the shadow. For the closed shadow, such element should not leak to the
+light DOM, so it is adjusted to the nearest unclosed offsetParent.
+
+See also
+https://github.com/w3c/webcomponents/issues/497
+https://github.com/w3c/csswg-drafts/issues/159
+-->
+<div id='host_open2' class='container'>
+ <template data-mode='open' data-expose-as='root_open2'>
+ <style>.container { position: relative; }</style>
+ <div id='container_open' class='container'>
+ <slot name='x'></slot>
+ </div>
+ </template>
+ <span id='target_open' slot='x'>X</span>
+</div>
+
+<div id='host_closed2' class='container'>
+ <template data-mode='closed' data-expose-as='root_closed2'>
+ <style>.container { position: relative; }</style>
+ <div id='container_closed' class='container'>
+ <slot name='x'></slot>
+ </div>
+ </template>
+ <span id='target_closed' slot='x'>Y</span>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_open2);
+convertTemplatesToShadowRootsWithin(host_closed2);
+
+test(() => {
+ assert_equals(target_open.offsetParent.id, 'container_open');
+ assert_equals(target_closed.offsetParent.id, 'host_closed2');
+}, 'offsetParent should return an unclosed node.');
+</script>
+
+<!--
+Check if offsetParent can properly traverse up to find unclosed node.
+In the following example, #target_closed3 will distributed to slot y,
+but its offsetParent should neither return #inner_node nor #inner_host.
+-->
+
+<div id='host_closed3' class='container'>
+ <template data-mode='closed' data-expose-as='root_closed3'>
+ <style>.container { position: relative; }</style>
+ <div id='inner_host' class='container'>
+ <template data-mode='closed' data-expose-as='root_closed_inner3'>
+ <style>.container { position: relative; }</style>
+ <div id='inner_node' class='container'>
+ <slot name='y'></slot>
+ </div>
+ </template>
+ <slot name='x' slot='y'></slot>
+ </div>
+ </template>
+ <span id='target_closed3' slot='x'>Z</span>
+</div>
+
+<script>
+convertTemplatesToShadowRootsWithin(host_closed3);
+
+test(() => {
+ let slot_y = root_closed_inner3.querySelector('slot[name=y]');
+ assert_array_equals(slot_y.assignedNodes({flatten: true}), [target_closed3]);
+ assert_equals(target_closed3.offsetParent.id, 'host_closed3');
+}, 'offsetParent should skip any non-unclosed nodes.');
+</script>
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