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List: kde-core-devel
Subject: Re: Review Request 111585: Don't update clipboard before cut/paste KIO operation succeeds
From: "Dawit Alemayehu" <adawit () kde ! org>
Date: 2013-07-19 23:56:18
Message-ID: 20130719235618.24474.46386 () vidsolbach ! de
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> On July 19, 2013, 6:25 p.m., David Faure wrote:
> > You mention running tests, but it doesn't really count since no test is testing \
> > this clipboard stuff at the moment :-)
Sorry. I attached an earlier version of the patch by mistake. :( I will attach the \
right one after making the changes you suggested.
> On July 19, 2013, 6:25 p.m., David Faure wrote:
> > kio/kio/updateclipboard_p.h, line 30
> > <http://git.reviewboard.kde.org/r/111585/diff/1/?file=172221#file172221line30>
> >
> > The class name is a verb, this is a bit unusual. Maybe call it ClipboardUpdater, \
> > rather?
> >
> > Could you document what the class does?
> > OverwriteContent replaces source urls with destination urls after a copy job is \
> > done. What does UpdateContent do?
> >
> >
> > What about the case where CopyJob needed some user intervention? E.g. if you get \
> > an "overwrite/rename" dialog, you can choose a different destination than \
> > initially planned. Does this update the desturl, i.e. the clipboard updater will \
> > do the right thing?
"UpdateContent" preserves the urls in the clipboard and only updates those that \
changed where as "OverwriteContent" simply overwrites what is in the clipboard with a \
new set of urls. Anyhow, I have added documentation with specific use case examples \
and simplified the code a bit to make even more clearer.
As far as the updater doing the right thing when a user intervention is required, it \
will do the right if the job itself gets updated with the changed destination url. \
Since we connect to the result signal and carry out the change only upon successful \
completion, the changes always reflect the state of the job itself when the result \
signal is emitted. Is it an incorrect assumption that the job will reflect the \
changed destination url?
- Dawit
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/111585/#review36168
-----------------------------------------------------------
On July 19, 2013, 1:17 p.m., Dawit Alemayehu wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/111585/
> -----------------------------------------------------------
>
> (Updated July 19, 2013, 1:17 p.m.)
>
>
> Review request for kdelibs and David Faure.
>
>
> Description
> -------
>
> The attached patch fixes a bug where the contents of the clipboard are prematurely \
> updated during a cut and paste operation. In the process I also discovered that \
> undoing the operation does not update the clipboard either. Hence that too is fixed \
> by this patch.
> Please note that this patch does not address all the cases where the content of the \
> clipboard is not updated after a KIO operation. More specifically the clipboard \
> content will be out of sync if the user performs the following operations:
> - copy/cut a file or a directory and rename it
> - copy/cut a file or a directory and move it
> - copy/cut a file or a directory and delete it.
>
> In fact there is a ticket for the copy/cut and rename file/directory scenario (bug# \
> 134960). However, addressing these issues require a careful consideration of how to \
> do it since delete/rename/move operations can be done outside of KDE's control. Do \
> we simply fix the KIO jobs to handle this or do we address it the KDirWatch level \
> so we catch all the scenarios? Probably the latter. Anyhow, that can wait until for \
> the 134960 fix.
>
> This addresses bug 318757.
> http://bugs.kde.org/show_bug.cgi?id=318757
>
>
> Diffs
> -----
>
> kio/CMakeLists.txt f7a3767
> kio/kio/fileundomanager.cpp 9f76fef
> kio/kio/paste.cpp ca451fb
> kio/kio/updateclipboard.cpp PRE-CREATION
> kio/kio/updateclipboard_p.h PRE-CREATION
>
> Diff: http://git.reviewboard.kde.org/r/111585/diff/
>
>
> Testing
> -------
>
> Unit and manual tests.
>
>
> Thanks,
>
> Dawit Alemayehu
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/111585/">http://git.reviewboard.kde.org/r/111585/</a>
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<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;"> <p style="margin-top: 0;">On July 19th, 2013, 6:25 p.m. UTC, <b>David \
Faure</b> wrote:</p> <blockquote style="margin-left: 1em; border-left: 2px solid \
#d0d0d0; padding-left: 10px;"> <pre style="white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">You mention running tests, but it doesn't really count since no test \
is testing this clipboard stuff at the moment :-)</pre> </blockquote>
</blockquote>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Sorry. I attached an \
earlier version of the patch by mistake. :( I will attach the right one after making \
the changes you suggested.</pre> <br />
<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;"> <p style="margin-top: 0;">On July 19th, 2013, 6:25 p.m. UTC, <b>David \
Faure</b> wrote:</p> <blockquote style="margin-left: 1em; border-left: 2px solid \
#d0d0d0; padding-left: 10px;">
<table width="100%" border="0" bgcolor="white" style="border: 1px solid #C0C0C0; \
border-collapse: collapse; margin: 2px padding: 2px;"> <thead>
<tr>
<th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid #C0C0C0; \
font-size: 9pt; padding: 4px 8px; text-align: left;"> <a \
href="http://git.reviewboard.kde.org/r/111585/diff/1/?file=172221#file172221line30" \
style="color: black; font-weight: bold; text-decoration: \
underline;">kio/kio/updateclipboard_p.h</a> <span style="font-weight: normal;">
(Diff revision 1)
</span>
</th>
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</thead>
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<th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th> <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td> <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">30</font></th> <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span \
class="n">class</span> <span class="n">UpdateClipboard</span> <span \
class="o">:</span> <span class="n">public</span> <span \
class="n">QObject</span></pre></td> </tr>
</tbody>
</table>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The class name is a \
verb, this is a bit unusual. Maybe call it ClipboardUpdater, rather?
Could you document what the class does?
OverwriteContent replaces source urls with destination urls after a copy job is done.
What does UpdateContent do?
What about the case where CopyJob needed some user intervention? E.g. if you get an \
"overwrite/rename" dialog, you can choose a different destination than \
initially planned. Does this update the desturl, i.e. the clipboard updater will do \
the right thing?</pre> </blockquote>
</blockquote>
<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;">"UpdateContent" preserves the urls in the clipboard and only \
updates those that changed where as "OverwriteContent" simply overwrites \
what is in the clipboard with a new set of urls. Anyhow, I have added documentation \
with specific use case examples and simplified the code a bit to make even more \
clearer.
As far as the updater doing the right thing when a user intervention is required, it \
will do the right if the job itself gets updated with the changed destination url. \
Since we connect to the result signal and carry out the change only upon successful \
completion, the changes always reflect the state of the job itself when the result \
signal is emitted. Is it an incorrect assumption that the job will reflect the \
changed destination url?</pre> <br />
<p>- Dawit</p>
<br />
<p>On July 19th, 2013, 1:17 p.m. UTC, Dawit Alemayehu wrote:</p>
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<div>Review request for kdelibs and David Faure.</div>
<div>By Dawit Alemayehu.</div>
<p style="color: grey;"><i>Updated July 19, 2013, 1:17 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0"> <tr>
<td>
<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;">The attached patch fixes a bug where the contents of the clipboard are \
prematurely updated during a cut and paste operation. In the process I also \
discovered that undoing the operation does not update the clipboard either. Hence \
that too is fixed by this patch.
Please note that this patch does not address all the cases where the content of the \
clipboard is not updated after a KIO operation. More specifically the clipboard \
content will be out of sync if the user performs the following operations:
- copy/cut a file or a directory and rename it
- copy/cut a file or a directory and move it
- copy/cut a file or a directory and delete it.
In fact there is a ticket for the copy/cut and rename file/directory scenario (bug# \
134960). However, addressing these issues require a careful consideration of how to \
do it since delete/rename/move operations can be done outside of KDE's control. \
Do we simply fix the KIO jobs to handle this or do we address it the KDirWatch level \
so we catch all the scenarios? Probably the latter. Anyhow, that can wait until for \
the 134960 fix.</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0"> <tr>
<td>
<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;">Unit and manual tests.</pre> </td>
</tr>
</table>
<div style="margin-top: 1.5em;">
<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="http://bugs.kde.org/show_bug.cgi?id=318757">318757</a>
</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>kio/CMakeLists.txt <span style="color: grey">(f7a3767)</span></li>
<li>kio/kio/fileundomanager.cpp <span style="color: grey">(9f76fef)</span></li>
<li>kio/kio/paste.cpp <span style="color: grey">(ca451fb)</span></li>
<li>kio/kio/updateclipboard.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>kio/kio/updateclipboard_p.h <span style="color: grey">(PRE-CREATION)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/111585/diff/" style="margin-left: \
3em;">View Diff</a></p>
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