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List: kde-core-devel
Subject: Re: Review Request: New action class proposal: KDualAction
From: Aurélien Gâteau <agateau () kde ! org>
Date: 2010-10-14 8:36:53
Message-ID: 20101014083653.10794.82679 () vidsolbach ! de
[Download RAW message or body]
> On 2010-10-13 22:53:42, Christoph Feck wrote:
> > trunk/KDE/kdelibs/kdeui/actions/kdualaction.h, line 147
> > <http://svn.reviewboard.kde.org/r/5396/diff/3/?file=39188#file39188line147>
> >
> > Shouldn't this be "setCurrentState(State state)" after your bool->enum \
> > conversion?
While I agree that setTextForState(true, i18n("Hide Sidebar")) is less intuitive than \
setTextForState(KDualAction::ActiveState, i18n("Hide Sidebar")), I think \
setActive(true) is as intuitive as setState(KDualAction::ActiveState). It also has \
the advantage of being easier to use as a slot, since it uses a bool instead of a \
class-specific enum.
For this reason I would like to keep setActive(bool). For completeness I could add \
setState(KDualAction::State), but it feels redundant. An alternative solution is to \
get rid of the enum and create explicit setter and getter methods. That is, replacing \
setTextForState(KDualAction::State, QString) with setTextForInactiveState(QString) \
and setTextForActiveState(QString).
On 2010-10-13 22:53:42, Aurélien Gâteau wrote:
> > Additionally, please add a KDualAction camelcased header. Thanks.
Just added it.
- Aurélien
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://svn.reviewboard.kde.org/r/5396/#review8128
-----------------------------------------------------------
On 2010-10-12 15:32:08, Aurélien Gâteau wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://svn.reviewboard.kde.org/r/5396/
> -----------------------------------------------------------
>
> (Updated 2010-10-12 15:32:08)
>
>
> Review request for kdelibs.
>
>
> Summary
> -------
>
> This review-request introduces a new class named KDualAction. The goal of this \
> class is to make it easy to create a dual-state action: an action which represents \
> two actions, switching from one to the other whenever it is triggered. KDualAction \
> can be used to implement actions such as the Play/Pause action of a media player or \
> the Reload/Stop action of a web browser.
> Right now some applications mis-use KToggleAction to implement such dual-state \
> actions: They set the first action as the unchecked state and provide an \
> alternative KGuiItem for the checked state with KToggleAction::setCheckedState(). \
> This is wrong because when the user clicks a button representing the action in a \
> toolbar, the button stays down. The appropriate use cases for toggle buttons (and \
> thus KToggleAction) are documented in a recent addition to the HIG: \
> http://techbase.kde.org/Projects/Usability/HIG/Toggle_Buttons
> Potential users for this class:
>
> - Dragon, Juk, Amarok to implement their Play/Pause action.
>
> - Rekonq to implement its Reload/Stop action. Konqueror could also use this but it \
> does not feature a dual reload/stop action as far as I know.
> - Dolphin could maybe use it to implement its Split/Close action (although it's a \
> bit more involved in this case because the close action changes depending on which \
> panel it is going to close)
> - Any application which incorrectly uses KToggleAction + setCheckedState() to \
> show/hide a UI element (a search on lxr.kde.org shows quite a lot of misuse: \
> http://lxr.kde.org/ident?i=setCheckedState )
>
> Diffs
> -----
>
> trunk/KDE/kdelibs/kdeui/CMakeLists.txt 1180870
> trunk/KDE/kdelibs/kdeui/actions/kdualaction.h PRE-CREATION
> trunk/KDE/kdelibs/kdeui/actions/kdualaction.cpp PRE-CREATION
> trunk/KDE/kdelibs/kdeui/actions/kdualaction_p.h PRE-CREATION
> trunk/KDE/kdelibs/kdeui/tests/CMakeLists.txt 1180870
> trunk/KDE/kdelibs/kdeui/tests/kdualactiontest.cpp PRE-CREATION
>
> Diff: http://svn.reviewboard.kde.org/r/5396/diff
>
>
> Testing
> -------
>
> The class comes with unit-tests. I tested the API made sense by porting Dragon, \
> Konqueror and creating a showHideMenubar action in KStandardAction (review requests \
> to come if the class is accepted).
>
> Thanks,
>
> Aurélien
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://svn.reviewboard.kde.org/r/5396/">http://svn.reviewboard.kde.org/r/5396/</a>
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<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;"> <p style="margin-top: 0;">On October 13th, 2010, 10:53 p.m., <b>Christoph \
Feck</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; \
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<th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid #C0C0C0; \
font-size: 9pt; padding: 4px 8px; text-align: left;"> <a \
href="http://svn.reviewboard.kde.org/r/5396/diff/3/?file=39188#file39188line147" \
style="color: black; font-weight: bold; text-decoration: \
underline;">trunk/KDE/kdelibs/kdeui/actions/kdualaction.h</a> <span \
style="font-weight: normal;">
(Diff revision 3)
</span>
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<tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: center;">
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<td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: 0; \
"></pre></td> <td colspan="2"><pre style="font-size: 8pt; line-height: 140%; margin: \
0; ">public Q_SLOTS:</pre></td>
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</tbody>
<tbody>
<tr>
<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">147</font></th> <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span \
class="kt">void</span> <span class="n">setActive</span><span class="p">(</span><span \
class="n">bool</span> <span class="n">state</span><span \
class="p">);</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;">Shouldn't this be \
"setCurrentState(State state)" after your bool->enum conversion?</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;">While I \
agree that setTextForState(true, i18n("Hide Sidebar")) is less intuitive \
than setTextForState(KDualAction::ActiveState, i18n("Hide Sidebar")), I \
think setActive(true) is as intuitive as setState(KDualAction::ActiveState). It also \
has the advantage of being easier to use as a slot, since it uses a bool instead of a \
class-specific enum.
For this reason I would like to keep setActive(bool). For completeness I could add \
setState(KDualAction::State), but it feels redundant. An alternative solution is to \
get rid of the enum and create explicit setter and getter methods. That is, replacing \
setTextForState(KDualAction::State, QString) with setTextForInactiveState(QString) \
and setTextForActiveState(QString). </pre>
<br />
<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;"> <p style="margin-top: 0;">On October 13th, 2010, 10:53 p.m., <b>Christoph \
Feck</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;">Additionally, please add a KDualAction camelcased header. Thanks.</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;">Just added it.</pre> <br \
/>
<p>- Aurélien</p>
<br />
<p>On October 12th, 2010, 3:32 p.m., Aurélien Gâteau wrote:</p>
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" \
style="background-image: \
url('http://svn.reviewboard.kde.orgrb/images/review_request_box_top_bg.png'); \
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solid;"> <tr>
<td>
<div>Review request for kdelibs.</div>
<div>By Aurélien Gâteau.</div>
<p style="color: grey;"><i>Updated 2010-10-12 15:32:08</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;">This review-request introduces a new class named KDualAction. The goal \
of this class is to make it easy to create a dual-state action: an action which \
represents two actions, switching from one to the other whenever it is triggered. \
KDualAction can be used to implement actions such as the Play/Pause action of a media \
player or the Reload/Stop action of a web browser.
Right now some applications mis-use KToggleAction to implement such dual-state \
actions: They set the first action as the unchecked state and provide an alternative \
KGuiItem for the checked state with KToggleAction::setCheckedState(). This is wrong \
because when the user clicks a button representing the action in a toolbar, the \
button stays down. The appropriate use cases for toggle buttons (and thus \
KToggleAction) are documented in a recent addition to the HIG: \
http://techbase.kde.org/Projects/Usability/HIG/Toggle_Buttons
Potential users for this class:
- Dragon, Juk, Amarok to implement their Play/Pause action.
- Rekonq to implement its Reload/Stop action. Konqueror could also use this but it \
does not feature a dual reload/stop action as far as I know.
- Dolphin could maybe use it to implement its Split/Close action (although it's a \
bit more involved in this case because the close action changes depending on which \
panel it is going to close)
- Any application which incorrectly uses KToggleAction + setCheckedState() to \
show/hide a UI element (a search on lxr.kde.org shows quite a lot of misuse: \
http://lxr.kde.org/ident?i=setCheckedState )</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;">The class comes with unit-tests. I tested the API made sense by porting \
Dragon, Konqueror and creating a showHideMenubar action in KStandardAction (review \
requests to come if the class is accepted).</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>trunk/KDE/kdelibs/kdeui/CMakeLists.txt <span style="color: \
grey">(1180870)</span></li>
<li>trunk/KDE/kdelibs/kdeui/actions/kdualaction.h <span style="color: \
grey">(PRE-CREATION)</span></li>
<li>trunk/KDE/kdelibs/kdeui/actions/kdualaction.cpp <span style="color: \
grey">(PRE-CREATION)</span></li>
<li>trunk/KDE/kdelibs/kdeui/actions/kdualaction_p.h <span style="color: \
grey">(PRE-CREATION)</span></li>
<li>trunk/KDE/kdelibs/kdeui/tests/CMakeLists.txt <span style="color: \
grey">(1180870)</span></li>
<li>trunk/KDE/kdelibs/kdeui/tests/kdualactiontest.cpp <span style="color: \
grey">(PRE-CREATION)</span></li>
</ul>
<p><a href="http://svn.reviewboard.kde.org/r/5396/diff/" style="margin-left: \
3em;">View Diff</a></p>
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