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Remove duplicate Service Worker inline issue #286

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Sep 26, 2017
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Remove duplicate Service Worker inline issue #286

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6 changes: 0 additions & 6 deletions index.bs
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Expand Up @@ -378,12 +378,6 @@ To mitigate this threat, the user agent should check if it [=can expose sensor r
whose [=active document=]'s [=steps to determine the visibility state|visibility state=]
is "visible".

Issue: certain use cases require sensors to have background access.
Using a more complex {{PermissionDescriptor}}.
(e.g. with a boolean `allowBackgroundUsage = false`; [=dictionary member=]),
might be the solution to relax this restriction.


<h4 id="permissions" oldids="permissioning">Permissions API</h4>

Access to [=sensor readings=] are controlled by the Permissions API [[!PERMISSIONS]].
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10 changes: 3 additions & 7 deletions index.html
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Expand Up @@ -1843,10 +1843,6 @@ <h4 class="heading settled" data-level="4.2.3" id="losing-focus"><span class="se
<h4 class="heading settled" data-level="4.2.4" id="visibility-state"><span class="secno">4.2.4. </span><span class="content">Visibility State</span><a class="self-link" href="#visibility-state"></a></h4>
<p><a data-link-type="dfn" href="#sensor-readings" id="ref-for-sensor-readings⑨">Sensor readings</a> are only available in <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#top-level-browsing-context" id="ref-for-top-level-browsing-context③">browsing contexts</a>,
whose <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#active-document" id="ref-for-active-document">active document</a>'s <a data-link-type="dfn" href="https://w3c.github.io/page-visibility#dfn-steps-to-determine-the-visibility-state" id="ref-for-dfn-steps-to-determine-the-visibility-state">visibility state</a> is "visible".</p>
<p class="issue" id="issue-a175b438"><a class="self-link" href="#issue-a175b438"></a> certain use cases require sensors to have background access.
Using a more complex <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dictdef-permissiondescriptor" id="ref-for-dictdef-permissiondescriptor">PermissionDescriptor</a></code>.
(e.g. with a boolean <code>allowBackgroundUsage = false</code>; <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-dictionary-member" id="ref-for-dfn-dictionary-member">dictionary member</a>),
might be the solution to relax this restriction.</p>
<h4 class="heading settled" data-level="4.2.5" id="permissions"><span class="secno">4.2.5. </span><span class="content">Permissions API</span><span id="permissioning"></span><a class="self-link" href="#permissions"></a></h4>
<p>Access to <a data-link-type="dfn" href="#sensor-readings" id="ref-for-sensor-readings①⓪">sensor readings</a> are controlled by the Permissions API <a data-link-type="biblio" href="#biblio-permissions">[PERMISSIONS]</a>.
User agents use a <a data-link-type="dfn" href="https://w3c.github.io/permissions/#new-information-about-the-users-intent" id="ref-for-new-information-about-the-users-intent">number of criteria</a> to grant access to the <a data-link-type="dfn" href="#sensor-readings" id="ref-for-sensor-readings①①">readings</a>.
Expand Down Expand Up @@ -2225,7 +2221,7 @@ <h4 class="heading settled" data-level="7.1.2" id="sensor-internal-slots"><span
It is initially false.
<tr>
<td><dfn class="dfn-paneled idl-code" data-dfn-for="Sensor" data-dfn-type="attribute" data-export="" id="dom-sensor-identifyingparameters-slot"><code>[[identifyingParameters]]</code></dfn>
<td> A <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type②⑥">sensor type</a>-specific group of <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-dictionary-member" id="ref-for-dfn-dictionary-member①">dictionary members</a> used to select the correct <a data-link-type="dfn" href="#concept-platform-sensor" id="ref-for-concept-platform-sensor②②">platform sensor</a> to associate to this <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor①⓪">Sensor</a></code> object.
<td> A <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type②⑥">sensor type</a>-specific group of <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-dictionary-member" id="ref-for-dfn-dictionary-member">dictionary members</a> used to select the correct <a data-link-type="dfn" href="#concept-platform-sensor" id="ref-for-concept-platform-sensor②②">platform sensor</a> to associate to this <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor①⓪">Sensor</a></code> object.
</table>
<h4 class="heading settled" data-level="7.1.3" id="sensor-activated"><span class="secno">7.1.3. </span><span class="content">Sensor.activated</span><a class="self-link" href="#sensor-activated"></a></h4>
<div class="algorithm" data-algorithm="is sensor activated">
Expand Down Expand Up @@ -2904,7 +2900,7 @@ <h3 class="heading settled" data-level="9.6" id="definition-reqs"><span class="s
<p>A set of <a data-link-type="dfn" href="#identifying-parameters" id="ref-for-identifying-parameters②">identifying parameters</a>. TODO: replace that by an abstract operation.</p>
</ul>
<h3 class="heading settled" data-level="9.7" id="permission-api"><span class="secno">9.7. </span><span class="content">Extending the Permission API</span><a class="self-link" href="#permission-api"></a></h3>
<p>An implementation of the <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor③⓪">Sensor</a></code> interface for each <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type③④">sensor type</a> must protect its <a data-link-type="dfn" href="#sensor-readings" id="ref-for-sensor-readings④⑤">reading</a> by associated <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#enumdef-permissionname" id="ref-for-enumdef-permissionname⑥">PermissionName</a></code> or <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dictdef-permissiondescriptor" id="ref-for-dictdef-permissiondescriptor①">PermissionDescriptor</a></code>.
<p>An implementation of the <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor③⓪">Sensor</a></code> interface for each <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type③④">sensor type</a> must protect its <a data-link-type="dfn" href="#sensor-readings" id="ref-for-sensor-readings④⑤">reading</a> by associated <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#enumdef-permissionname" id="ref-for-enumdef-permissionname⑥">PermissionName</a></code> or <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dictdef-permissiondescriptor" id="ref-for-dictdef-permissiondescriptor">PermissionDescriptor</a></code>.
A <a data-link-type="dfn" href="#low-level" id="ref-for-low-level①②">Low-level</a> <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor③①">sensor</a></code> may use its interface name as a <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#enumdef-permissionname" id="ref-for-enumdef-permissionname⑦">PermissionName</a></code>,
for instance, "gyroscope" or "accelerometer". <a data-link-type="dfn" href="#sensor-fusion" id="ref-for-sensor-fusion⑨">Fusion sensors</a> must <a data-link-type="dfn" href="https://w3c.github.io/permissions/#request-permission-to-use" id="ref-for-request-permission-to-use①">request permission to access</a> each of the sensors that are
used as a source of fusion.</p>
Expand All @@ -2914,7 +2910,7 @@ <h3 class="heading settled" data-level="9.7" id="permission-api"><span class="se
therefore, these sensors must <a data-link-type="dfn" href="https://w3c.github.io/permissions/#request-permission-to-use" id="ref-for-request-permission-to-use②">request permission to use</a> magnetometer as it provides information about orientation of device in relation to Earth’s
magnetic field. In contrast, relative orientation sensor does not expose such information, thus,
it does not need to <a data-link-type="dfn" href="https://w3c.github.io/permissions/#request-permission-to-use" id="ref-for-request-permission-to-use③">request permission to use</a> magnetometer.</p>
<p><code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dictdef-permissiondescriptor" id="ref-for-dictdef-permissiondescriptor②">Permission descriptors</a></code> can also be used to set maximum allowed limits
<p><code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dictdef-permissiondescriptor" id="ref-for-dictdef-permissiondescriptor①">Permission descriptors</a></code> can also be used to set maximum allowed limits
for accuracy or <a data-link-type="dfn" href="#sampling-frequency" id="ref-for-sampling-frequency⑦">sampling frequency</a>. An example for a possible extension of the Permission API
for accelerometer sensor is given below.</p>
<pre class="example" id="example-6d08453b"><a class="self-link" href="#example-6d08453b"></a>dictionary AccelerometerPermissionDescriptor : PermissionDescriptor {
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