Add ability to clone a template containing declarative Shadow DOM #23359
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Prior to this CL, this would not work correctly:
<template id=target>
<div>
<template shadowroot=open>Content</template>
</div>
</template>
<script>
document.body.appendChild(target.content.cloneNode(true));
</script>
The inner declarative Shadow DOM (<template shadowroot>) would not get
cloned from the template content to the clone. With this CL, it now
works correctly. Several tests were added to test nested template
and declarative Shadow DOM nodes.
This CL mirrors the DOM spec changes made in [1].
[1] whatwg/dom#858
Bug: 1042130
Change-Id: I05792e038dc694ac00d13531c657afaed754f747
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2175062
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Commit-Queue: Mason Freed <masonfreed@chromium.org>
Auto-Submit: Mason Freed <masonfreed@chromium.org>
Cr-Commit-Position: refs/heads/master@{#766528}
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Prior to this CL, this would not work correctly:
<template id=target>
<div>
<template shadowroot=open>Content</template>
</div>
</template>
<script>
document.body.appendChild(target.content.cloneNode(true));
</script>
The inner declarative Shadow DOM (<template shadowroot>) would not get
cloned from the template content to the clone. With this CL, it now
works correctly. Several tests were added to test nested template
and declarative Shadow DOM nodes.
This CL mirrors the DOM spec changes made in [1].
[1] whatwg/dom#858
Bug: 1042130
Change-Id: I05792e038dc694ac00d13531c657afaed754f747
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2175062
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Commit-Queue: Mason Freed <masonfreed@chromium.org>
Auto-Submit: Mason Freed <masonfreed@chromium.org>
Cr-Commit-Position: refs/heads/master@{#766528}