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<!--
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<title>WebKitWebProcessExtension.WebFormManager::will-submit-form</title>
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<h3><a href="index.html">WebKitWebProcessExtension</a></h3>
<p>API Version: 6.0</p>
<p>Library Version: 2.50.1</p>
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<div class="section">
<h5>Type</h5>
<div class="links">
<a href="class.WebFormManager.html">WebFormManager</a>
</div>
</div>
<div class="section">
<h5>Signals</h5>
<div class="links">
<a class="signal" href="signal.WebFormManager.form-controls-associated.html">form-controls-associated</a>
<a class="signal" href="signal.WebFormManager.will-send-submit-event.html">will-send-submit-event</a>
<a class="signal current" href="signal.WebFormManager.will-submit-form.html">will-submit-form</a>
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<h3>Signal</h3>
<h1><a href="index.html">WebKitWebProcessExtension</a><span class="sep"></span><a href="class.WebFormManager.html">WebFormManager</a>::will-submit-form</h1>
</header>
<section>
<div class="docblock">
<p><span class="emblem available">since: 2.40</span></p>
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<div class="declaration toggle-wrapper">
<h4 id="declaration">
Declaration
<a href="#declaration" class="anchor"></a>
</h4>
<div class="docblock">
<pre><code><div class="highlight"><pre><span></span><span class="kt">void</span>
<span class="n">will_submit_form</span><span class="w"> </span><span class="p">(</span>
<span class="w"> </span><span class="n">WebKitWebFormManager</span><span class="o">*</span><span class="w"> </span><span class="n">self</span><span class="p">,</span>
<span class="w"> </span><span class="n">JSCValue</span><span class="o">*</span><span class="w"> </span><span class="n">form</span><span class="p">,</span>
<span class="w"> </span><span class="n">WebKitFrame</span><span class="o">*</span><span class="w"> </span><span class="n">source_frame</span><span class="p">,</span>
<span class="w"> </span><span class="n">WebKitFrame</span><span class="o">*</span><span class="w"> </span><span class="n">target_frame</span><span class="p">,</span>
<span class="w"> </span><span class="n">gpointer</span><span class="w"> </span><span class="n">user_data</span>
<span class="p">)</span>
</pre></div>
</code></pre>
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<h4 id="description" style="display:flex;">
Description
<a href="#description" class="anchor"></a>
<a class="srclink" title="go to source location" href="https://github.com/WebKit/WebKit/tree/main/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebFormManager.cpp#L124">[src]</a>
</h4>
<div class="docblock">
<p>This signal is emitted when <code>form</code> will imminently be submitted. It can no longer
be cancelled. This event always occurs immediately before a form is submitted to
its target, so use this event to reliably detect when a form is submitted. This
signal is emitted after <code>WebKitWebFormManager::will-send-submit-event</code> if that
signal is emitted.</p>
</div>
<div class="docblock">
<table>
<tr><td>Default handler: <p>The default handler is called after the handlers added via <code>g_signal_connect()</code>.</p></td></tr>
<tr><td>Available since: 2.40</td></tr>
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<h4 id="parameters">
Parameters
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</h4>
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<dl class="arguments">
<dt class="arg-name"><code>form</code></dt>
<dd class="arg-description">
<p><em>Type:</em> <a href="javascript:void(0)" data-link="class.Value.html" data-namespace="JavaScriptCore" class="external"><code>JSCValue</code></a></p>
<p>The <code>JSCValue</code> to be submitted, which will always correspond to an HTMLFormElement.</p>
<table>
<tr><td title="transfer: none">The data is owned by the caller of the function.</td></tr>
</table>
</dd>
<dt class="arg-name"><code>source_frame</code></dt>
<dd class="arg-description">
<p><em>Type:</em> <a href="class.Frame.html"><code>WebKitFrame</code></a></p>
<p>The <code>WebKitFrame</code> containing the form to be submitted.</p>
<table>
<tr><td title="transfer: none">The data is owned by the caller of the function.</td></tr>
</table>
</dd>
<dt class="arg-name"><code>target_frame</code></dt>
<dd class="arg-description">
<p><em>Type:</em> <a href="class.Frame.html"><code>WebKitFrame</code></a></p>
<p>The <code>WebKitFrame</code> containing the form’s target,
which may be the same as <code>source_frame</code> if no target was specified.</p>
<table>
<tr><td title="transfer: none">The data is owned by the caller of the function.</td></tr>
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</dd>
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