<table><tr><td style="">anthonyfieroni added inline comments.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D8493" rel="noreferrer">View Revision</a></tr></table><br /><div><strong>INLINE COMMENTS</strong><div><div style="margin: 6px 0 12px 0;"><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D8493#inline-37919" rel="noreferrer">View Inline</a><span style="color: #4b4d51; font-weight: bold;">foldermodel.cpp:163-164</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span style="color: #aa4000">if</span> <span class="p">(</span><span class="n">m_screenMapper</span><span class="p">)</span> <span class="p">{</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">disconnect</span><span class="p">(</span><span class="n">m_screenMapper</span><span class="p">,</span> <span style="color: #aa2211">&</span><span class="n">ScreenMapper</span><span style="color: #aa2211">::</span><span class="n">screensChanged</span><span class="p">,</span> <span style="color: #aa4000">this</span><span class="p">,</span> <span style="color: #aa2211">&</span><span class="n">FolderModel</span><span style="color: #aa2211">::</span><span class="n">invalidateFilter</span><span class="p">);</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">disconnect</span><span class="p">(</span><span class="n">m_screenMapper</span><span class="p">,</span> <span style="color: #aa2211">&</span><span class="n">ScreenMapper</span><span style="color: #aa2211">::</span><span class="n">screenMappingChanged</span><span class="p">,</span> <span style="color: #aa4000">this</span><span class="p">,</span> <span style="color: #aa2211">&</span><span class="n">FolderModel</span><span style="color: #aa2211">::</span><span class="n">invalidateFilter</span><span class="p">);</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">m_screenMapper</span><span style="color: #aa2211">-></span><span class="n">removeScreen</span><span class="p">(</span><span class="n">m_screen</span><span class="p">,</span> <span class="n">url</span><span class="p">());</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">When QObject dies it's disconnected to all signal/slots. In this case if you want to not notify FolderModel you can use</p>

<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">m_screenMapper->disconnect(this);</pre></div></div></div><br /><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D8493#inline-37918" rel="noreferrer">View Inline</a><span style="color: #4b4d51; font-weight: bold;">foldermodel.cpp:1673-1674</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);"><span class="p">{</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span style="color: #aa4000">if</span> <span class="p">(</span><span class="n">m_screenMapper</span> <span style="color: #aa2211">==</span> <span class="n">screenMapper</span><span class="p">)</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span style="color: #aa4000">return</span><span class="p">;</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">{} braces even on one line, done it on all places.</p></div></div><br /><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D8493#inline-37920" rel="noreferrer">View Inline</a><span style="color: #4b4d51; font-weight: bold;">screenmapper.cpp:32-36</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span style="color: #aa4000">if</span> <span class="p">(</span><span class="n">s_instance</span><span class="p">)</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span style="color: #aa4000">return</span> <span class="n">s_instance</span><span class="p">;</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span class="n">s_instance</span> <span style="color: #aa2211">=</span> <span style="color: #aa4000">new</span> <span class="n">ScreenMapper</span><span class="p">();</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span style="color: #aa4000">return</span> <span class="n">s_instance</span><span class="p">;</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">When you use singleton it's better to make variable construction in one line</p>

<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">static ScreenMapper *s_instance = new ScreenMapper();
return s_instance;</pre></div>

<p style="padding: 0; margin: 8px;">or</p>

<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">static ScreenMapper s_instance;
return &s_instance;</pre></div>

<p style="padding: 0; margin: 8px;">In this way you don't have unwanted check for creation and variable at class scope.</p></div></div></div></div></div><br /><div><strong>REPOSITORY</strong><div><div>R119 Plasma Desktop</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D8493" rel="noreferrer">https://phabricator.kde.org/D8493</a></div></div><br /><div><strong>To: </strong>amantia, Plasma, ervin, mlaurent, dvratil, hein, aacid, davidedmundson, apol, mwolff<br /><strong>Cc: </strong>anthonyfieroni, ngraham, mwolff, davidedmundson, broulik, mart, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol<br /></div>