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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/123705/">https://git.reviewboard.kde.org/r/123705/</a>
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<p style="margin-top: 0;">On May 9th, 2015, 7:42 p.m. UTC, <b>David Faure</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">With this API change, I wonder if it makes sense for kconfiggui.cpp to retain ownership of the KConfig object. Wouldn't it be safer if the caller got ownership of it, saved into it, and then discarded the KConfig instance? Then we wouldn't have this "lose unsaved changes" code path. Or is the idea that multiple parts of the code could connect to the qApp signal, so they should share the same KConfig instance?</p></pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I understood that KConfigGui is responsible for the applications' session configuration. I.e. there are the following situations:</p>
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<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">application started without -session command line argumen:t KConfigGui::sessionConfig() must never be called. That's what canBeRestored() is all about.</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">application started with -session command line argument: KConfig::sessionConfig() needs to create KConfig object based on that name so that the application can restore its state.</li>
<li style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">session manager emits saveStateRequest signal. At this point the old session config file has become obsolete and a new one needs to be generated -> KConfigGui::sessionConfig(&sm). The application must file that KConfig object with the new status. If code calls KConfigGui::sessionConfig() it must return the new object.</li>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I agree that if kxmlgui KMainWindow is the only user of KConfigGui then the code could be refactored to squash KConfigGui into KMainWindow. But IMHO that is beyond the scope of this bug/review.</p></pre>
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<p style="margin-top: 0;">On May 9th, 2015, 7:42 p.m. UTC, <b>David Faure</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/123705/diff/1/?file=367967#file367967line58" style="color: black; font-weight: bold; text-decoration: underline;">src/gui/kconfiggui.cpp</a>
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(Diff revision 1)
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="c1">// delete old config object without storing it to disk</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This looks dangerous. Are we 100% sure that this is safe?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">To ask this otherwise: how can this config object actually have any uncommitted changes? It's only used during session saving, no?</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Moved to the change in review /r/123706 instead</p></pre>
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<p style="margin-top: 0;">On May 9th, 2015, 7:42 p.m. UTC, <b>David Faure</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/123705/diff/1/?file=367967#file367967line78" style="color: black; font-weight: bold; text-decoration: underline;">src/gui/kconfiggui.cpp</a>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cp">#ifdef QT_NO_SESSIONMANAGER</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">ensureSessionConfig</span><span class="p">();</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">why not just return sessionConfig()->name() ?
Then there's no need for the separate ensureSessionConfig() (which always has the risk that someone forgets to call it, after a refactoring).</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Thanks, my brain was still stuck in the old code structure, which of course now is obsolete.</p></pre>
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<p>- Stefan</p>
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<p>On May 10th, 2015, 10:30 a.m. UTC, Stefan Becker wrote:</p>
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<div>Review request for KDE Frameworks and Rex Dieter.</div>
<div>By Stefan Becker.</div>
<p style="color: grey;"><i>Updated May 10, 2015, 10:30 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://bugs.kde.org/show_bug.cgi?id=346768">346768</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kconfig
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">When the application receives a saveState signal it needs to replace the current KConfig object with a new one based on the QSessionManager information. Add a new variant that accepts the session manager object.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">On F22 with kwrite & konsole</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>src/gui/kconfiggui.h <span style="color: grey">(173400f)</span></li>
<li>src/gui/kconfiggui.cpp <span style="color: grey">(0048c60)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/123705/diff/" style="margin-left: 3em;">View Diff</a></p>
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