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<span>dupeGuru 4.0.3 documentation</span></a></h1>
<h2 class="heading"><span>hscommon.gui.base</span></h2>
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<div class="section" id="module-hscommon.gui.base">
<span id="hscommon-gui-base"></span><h1>hscommon.gui.base<a class="headerlink" href="#module-hscommon.gui.base" title="Permalink to this headline"></a></h1>
<table border="1" class="longtable docutils">
<colgroup>
<col width="10%" />
<col width="90%" />
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<tbody valign="top">
<tr class="row-odd"><td><a class="reference internal" href="#hscommon.gui.base.GUIObject" title="hscommon.gui.base.GUIObject"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GUIObject</span></code></a>([multibind])</td>
<td>Cross-toolkit “model” representation of a GUI layer object.</td>
</tr>
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<dl class="class">
<dt id="hscommon.gui.base.GUIObject">
<em class="property">class </em><code class="descclassname">hscommon.gui.base.</code><code class="descname">GUIObject</code><span class="sig-paren">(</span><em>multibind=False</em><span class="sig-paren">)</span><a class="headerlink" href="#hscommon.gui.base.GUIObject" title="Permalink to this definition"></a></dt>
<dd><p>Cross-toolkit “model” representation of a GUI layer object.</p>
<p>A <code class="docutils literal notranslate"><span class="pre">GUIObject</span></code> is a cross-toolkit “model” representation of a GUI layer object, for example, a
table. It acts as a cross-toolkit interface to what we call here a <a class="reference internal" href="#hscommon.gui.base.GUIObject.view" title="hscommon.gui.base.GUIObject.view"><code class="xref py py-attr docutils literal notranslate"><span class="pre">view</span></code></a>. That
view is a toolkit-specific controller to the actual view (an <code class="docutils literal notranslate"><span class="pre">NSTableView</span></code>, a <code class="docutils literal notranslate"><span class="pre">QTableView</span></code>,
etc.). In our GUIObject, we need a reference to that toolkit-specific controller because some
actions have effects on it (for example, prompting it to refresh its data). The <code class="docutils literal notranslate"><span class="pre">GUIObject</span></code>
is typically instantiated before its <a class="reference internal" href="#hscommon.gui.base.GUIObject.view" title="hscommon.gui.base.GUIObject.view"><code class="xref py py-attr docutils literal notranslate"><span class="pre">view</span></code></a>, that is why we set it to <code class="docutils literal notranslate"><span class="pre">None</span></code> on init.
However, the GUI layer is supposed to set the view as soon as its toolkit-specific controller is
instantiated.</p>
<p>When you subclass <code class="docutils literal notranslate"><span class="pre">GUIObject</span></code>, you will likely want to update its view on instantiation. That
is why we call <code class="docutils literal notranslate"><span class="pre">self.view.refresh()</span></code> in <a class="reference internal" href="#hscommon.gui.base.GUIObject._view_updated" title="hscommon.gui.base.GUIObject._view_updated"><code class="xref py py-meth docutils literal notranslate"><span class="pre">_view_updated()</span></code></a>. If you need another type of
action on view instantiation, just override the method.</p>
<p>Most of the time, you will only one to bind a view once in the lifetime of your GUI object.
That is why there are safeguards, when setting <code class="docutils literal notranslate"><span class="pre">view</span></code> to ensure that we dont double-assign.
However, sometimes you want to be able to re-bind another view. In this case, set the
<code class="docutils literal notranslate"><span class="pre">multibind</span></code> flag to <code class="docutils literal notranslate"><span class="pre">True</span></code> and the safeguard will be disabled.</p>
<dl class="method">
<dt id="hscommon.gui.base.GUIObject._view_updated">
<code class="descname">_view_updated</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#hscommon.gui.base.GUIObject._view_updated" title="Permalink to this definition"></a></dt>
<dd><p>(Virtual) Called after <a class="reference internal" href="#hscommon.gui.base.GUIObject.view" title="hscommon.gui.base.GUIObject.view"><code class="xref py py-attr docutils literal notranslate"><span class="pre">view</span></code></a> has been set.</p>
<p>Doing nothing by default, this method is called after <a class="reference internal" href="#hscommon.gui.base.GUIObject.view" title="hscommon.gui.base.GUIObject.view"><code class="xref py py-attr docutils literal notranslate"><span class="pre">view</span></code></a> has been set (it isnt
called when its unset, however). Use this for initialization code that requires a view
(which is often the whole of the initialization code).</p>
</dd></dl>
<dl class="attribute">
<dt id="hscommon.gui.base.GUIObject.view">
<code class="descname">view</code><a class="headerlink" href="#hscommon.gui.base.GUIObject.view" title="Permalink to this definition"></a></dt>
<dd><p>A reference to our toolkit-specific view controller.</p>
<p><em>view answering to GUIObject sublasss view protocol</em>. <em>get/set</em></p>
<p>This view starts as <code class="docutils literal notranslate"><span class="pre">None</span></code> and has to be set “manually”. Theres two times at which we set
the view property: On initialization, where we set the view that well use for our lifetime,
and just before the view is deallocated. We need to unset our view at that time to avoid
calls to a deallocated instance (which means a crash).</p>
<p>To unset our view, we simple assign it to <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
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