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@alancutter
alancutter committed Nov 8, 2022
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Expand Up @@ -286,17 +286,16 @@ <h2>
Launching a Web App with Handling
</h2>
<p>
This specification amends the existing algorithm to
<a data-cite="appmanifest#dfn-launch-a-web-application">launch a web
application</a> to include the behavior of [=manifest/launch_handler=]
This specification replaces the existing algorithm to [=launch a web
application=] to include the behavior of [=manifest/launch_handler=]
by replacing it with the steps to [=launch a web app with handling=].
</p>
<p>
The steps to <dfn>launch a web app with handling</dfn> are given by
the following algorithm. The algorithm takes a
<a data-cite="appmanifest#dfn-processed-manifest">processed manifest</a>
|manifest:processed manifest|, an optional [=URL=] or
{{LaunchParams}} |params| and an optional <a data-cite="html#post-resource">POST resource</a> |POST resource|.
The steps to <dfn data-export="">launch a web app with handling</dfn>
are given by the following algorithm. The algorithm takes a
[=Document/processed manifest=] |manifest:processed manifest|, an
optional [=URL=] or {{LaunchParams}} |params|, an optional [=POST
resource=] |POST resource| and returns an [=application context=].
</p>
<ol class="algorithm">
<li>If |params| is null, set |params| to
Expand All @@ -305,43 +304,37 @@ <h2>
<li>If |params| is a [=URL=], set |params| to a new {{LaunchParams}}
with {{LaunchParams/targetURL}} set to |params|.
</li>
<li>Set |client| to the result of running the steps to
[=prepare a web app launch client=] passing |manifest|, |params|
<li>Assert: |params|.{{LaunchParams/targetURL}} is [=manifest/within
scope=] of |manifest|.
</li>
<li>Set |application context| to the result of running the steps to
[=prepare an application context=] passing |manifest|, |params|
and |POST resource|.
</li>
<li>Append |params| to the [=unconsumed launch params=] of the
|client|'s document's {{Window/launchQueue}}.
|application context|'s document's {{Window/launchQueue}}.
</li>
<li>Run the steps to [=process unconsumed launch params=] on the
|client|'s document's {{Window/launchQueue}}.
|application context|'s [=navigable/active document=]'s
{{Window/launchQueue}}.
<p class="note">
|client| may be an existing [=web app launch client=] with
an [=assigned launch consumer=] hence it is necessary to process
|application context| may be an existing instance with an
[=assigned launch consumer=] hence it is necessary to process
the newly appended {{LaunchParams}}.
</p>
</li>
</ol>
</section>
<section>
<h2>
Preparing a [=Web App Launch Client=]
Preparing an [=application context=]
</h2>
<p>
A <dfn>web app launch client</dfn> is a
[=top-level browsing context=] associated with the web app.
</p>
<p class="note">
The exact form of this association is up to the user agent e.g. a
dedicated app window separate UI presentation from general hyperlink
browsing.
</p>
<p>
To <dfn>prepare a web app launch client</dfn> given a
<a data-cite="appmanifest#dfn-processed-manifest"> processed
manifest</a> |manifest|, a {{LaunchParams}}
|launch params:LaunchParams| and an optional
<a data-cite="html#post-resource">POST resource</a> |POST resource|,
run the following steps:
The steps to <dfn>prepare an application context</dfn> are given by
the following algorithm. The algorithm takes a
[=Document/processed manifest=] |manifest:processed manifest|, a
{{LaunchParams}} |launch params|, an optional [=POST
resource=] |POST resource| and returns an [=application context=].
</p>
<ol class="algorithm">
<li>Let [=client mode target=] |client_mode| be
Expand All @@ -358,63 +351,43 @@ <h2>
<dt>[=client mode/navigate-new=]</code>
<dd>
<ol class="algorithm">
<li>Return the result of running the steps to [=prepare a new
web app launch client=] passing |manifest|,
|launch params| and |POST resource|.
<li>Return the result of running the steps to [=create a new
application context=] passing |manifest|, |launch
params|.{{LaunchParams/targetURL}} and |POST resource|.
</li>
</ol>
<dt>[=client mode/navigate-existing=] or
[=client mode/focus-existing=]</code>
<dd>
<ol class="algorithm">
<li>If there is no [=top-level browsing context=] for
the web app, return the result of running the steps to
[=prepare a new web app launch client=] passing |manifest|
|target URL|.
<li>If there is no [=application context=] that has |manifest|
[=applied=], return the result of running the steps to
[=create a new application context=] passing |manifest|,
|launch params|.{{LaunchParams/targetURL}} and |POST
resource|.
</li>
<li>Let |application context| be an [=application context=]
that has |manifest| [=applied=], the user agent selects
the most appropriate one if there are multiple.
<p class="note">
An appropriate selection strategy would be to pick the
one that was most recently in focus.
</p>
</li>
<li>Let |client| be a [=top-level browsing context=]
for the web app, the exact selection algorithm is decided
by the user agent.
<li>Bring |application context|'s viewport into focus.
</li>
<li>If |client mode| is [=client mode/navigate-existing=],
run the steps to <a data-cite="html#navigate">navigate</a>
|client| to |launch params|.{{LaunchParams/targetURL}}
passing |POST resource|.
[=navigate=] |application context| to |launch
params|.{{LaunchParams/targetURL}} passing |POST
resource|.
</li>
<li>Return |client|.
<li>Return |application context|.
</li>
</ol>
</dl>
</li>
</ol>
</section>
<section>
<h2>
Preparing a new [=Web App Launch Client=]
</h2>
<p>
To <dfn>prepare a new web app launch client</dfn> given a
<a data-cite="appmanifest#dfn-processed-manifest">processed
manifest</a> |manifest:processed manifest|, {{LaunchParams}}
|launch params:LaunchParams| and optional
<a data-cite="html#post-resource">POST resource</a> |POST resource|,
run the following steps:
</p>
<ol class="algorithm">
<li>Let |traversable| be the result of
<a data-cite="html#create-a-fresh-top-level-traversable">
creating a fresh top-level traversable</a> passing
|launch params|.{{LaunchParams/targetURL}} and |POST resource|.
</li>
<li>Let |browsing context| be the |traversable|'s
<a data-cite="html#nav-bc">active browsing context</a>.
</li>
<li>[=Apply=] |manifest| to |browsing context|.
</li>
<li>Return |browsing context|.
</li>
</ol>
</section>
<section>
<h2>
Processing [=unconsumed launch params=]
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