Review Request 127263: Add Wireless Energy Saving action

Lamarque Souza lamarque at kde.org
Thu Mar 3 13:58:11 UTC 2016 


> On March 3, 2016, 12:35 p.m., Lamarque Souza wrote:
> > daemon/actions/bundled/wirelesspowersaving.cpp, line 49
> > <https://git.reviewboard.kde.org/r/127263/diff/1/?file=447897#file447897line49>
> >
> >     This and the next two if are a bit strange. Shouldn't this be:
> >     
> >     if (m_lastWifiState != m_currentProfileDisableWifi) {
> 
> Jan Grulich wrote:
>     Nope, it's correct. While the configuration checks whether it should be disabled, the NM::isWifiEnabled() returns if it's enabled, so when comparing "enabled" vs "disabled" I need to adjust one of them.

Ok about that being correct, but then the syntax is kind of unusual. You have three negations in that if expression: operator !=, operator ! and the "Disable" word in m_currentProfileDisableWifi. That makes the code difficult to read. It is because situations like that that I do not like using negative words in variable's name. That line could be:

if (m_lastWifiState != m_currentProfileEnableWifi) {

which is cleaner in my oppinion. Of course, you will have to change your code to cope with changing of m_currentProfileDisableWifi to m_currentProfileEnableWifi. That is just a suggestion, Powerdevil's maintainer has the final word about that.


- Lamarque


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On March 3, 2016, 1:30 p.m., Jan Grulich wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/127263/
> -----------------------------------------------------------
> 
> (Updated March 3, 2016, 1:30 p.m.)
> 
> 
> Review request for Plasma, Solid, KDE Usability, and Kai Uwe Broulik.
> 
> 
> Repository: powerdevil
> 
> 
> Description
> -------
> 
> This action adds an option to turn off wifi/wwan/bt once you switch profile (e.g you unplugg the power cable and start running on battery).
> 
> One more thing. Due to usage of NetworkManagerQt I had to add add_definitions(-DQT_NO_KEYWORDS) into CMakeLists.txt  like we do in plasma-nm to avoid compilation error (thanks to NetworkManager) and replace all keywords by their Qt equivalent (e.g signals ? Q_SIGNALS).
> 
> How it behaves:
> 1) Switching from "AC" profile to "battery" (or from "battery" to "low battery" which is the same situation):
>    a) When the action is enabled in "AC" profile and options to turn off wifi/wwan/bt are enabled
>       x) Switching to a profile where the action is enabled too and options are turned on ? will do nothing as they should be already turned off
>       y) Switching to a profile where the action is enabled too but options are turned off ? will do nothing as the "battery" profile is more conservative and we have those devices disabled already in less conservative profile
>       z) Switching to a profile where the action is disabled ? will do nothing as there is nothing to do
>    b) When the action is enabled in "AC" profile and options to turn off wifi/wwan/bt are disabled
>       ? this should behave according to the more conservative profile, if the options are enabled then all devices will be disabled too
>    C) When the action is disabled in "AC" profile
>       ? should behave as in the case 1-b
> 2) Switching from "battery" profile to "AC" profile (or from "low battery" to "battery" which is the same situation):
>    a) When the action is enabled in "battery" profile and options to turn off wifi/wwan/bt are enabled
>       x) Switching to a profile where the action is enabled too and options are turned on ? will do nothing as it's same setup
>       y) Switching to a profile where the action is enabled too and options are turned off ? will turn on the wifi/wwan/bt
>       z) Switching to a profile where the action is disabled ? will recover the previous state of the wifi/wwan/bt
>    b) When the action is enabled in "battery" profile and options to turn off wifi/wwan/bt are disabled
>       x) Switching to a profile where the action is enabled too and options are turned on ? will do nothing as the option in "battery" should be ignored in this case due to more conservative profile
>       y) Switching to a profile where the action is enabled too and options are turned off ? will do nothing, same configuration
>       z) Switching to a profile where the action is disabled ? will recover the previous state of the wifi/wwan/bt
>    c) When the action is diabled in "battery" profile
>       ? will just recover the previous state of the wifi/wwan/bt as there is nothing to change according to the new profile
> 
> 
> Diffs
> -----
> 
>   CMakeLists.txt e7fff17 
>   daemon/CMakeLists.txt bbfe191 
>   daemon/actions/bundled/CMakeLists.txt 45abea3 
>   daemon/actions/bundled/handlebuttonevents.h 5d602d7 
>   daemon/actions/bundled/handlebuttonevents.cpp 7e1d16e 
>   daemon/actions/bundled/handlebuttoneventsconfig.cpp b1d4ef0 
>   daemon/actions/bundled/org.kde.Solid.PowerManagement.Actions.WirelessPowerSaving.xml PRE-CREATION 
>   daemon/actions/bundled/powerdevilwirelesspowersavingaction.desktop PRE-CREATION 
>   daemon/actions/bundled/suspendsession.h d0fc78d 
>   daemon/actions/bundled/wirelesspowersaving.h PRE-CREATION 
>   daemon/actions/bundled/wirelesspowersaving.cpp PRE-CREATION 
>   daemon/actions/bundled/wirelesspowersavingconfig.h PRE-CREATION 
>   daemon/actions/bundled/wirelesspowersavingconfig.cpp PRE-CREATION 
>   daemon/backends/upower/backlighthelper.h b5ce7dc 
>   daemon/backends/upower/backlighthelper.cpp 58b82be 
>   daemon/backends/upower/powerdevilupowerbackend.h 32f0ee4 
>   daemon/backends/upower/powerdevilupowerbackend.cpp 6133887 
>   daemon/backends/upower/udevqtclient.cpp 52b17f6 
>   daemon/kwinkscreenhelpereffect.h bc1c21b 
>   daemon/kwinkscreenhelpereffect.cpp dec5d65 
>   daemon/powerdevilactionconfig.cpp 2565b0d 
>   daemon/powerdevilactionpool.cpp 2091879 
>   daemon/powerdevilbackendinterface.cpp 7aadb01 
>   daemon/powerdevilcore.cpp f02d474 
>   daemon/powerdevilfdoconnector.cpp d9a3ee6 
>   daemon/powerdevilpolicyagent.cpp e0d1ec6 
>   daemon/powerdevilprofilegenerator.cpp cff3120 
>   kcmodule/activities/activitypage.cpp ec18dee 
>   kcmodule/activities/activitywidget.cpp 5992a4d 
>   kcmodule/common/actioneditwidget.cpp 216399c 
>   kcmodule/global/GeneralPage.h a34d54f 
>   kcmodule/global/GeneralPage.cpp b2d9767 
>   kcmodule/profiles/EditPage.h 4791017 
>   kcmodule/profiles/EditPage.cpp 30973b2 
> 
> Diff: https://git.reviewboard.kde.org/r/127263/diff/
> 
> 
> Testing
> -------
> 
> I did some basic testing like (un)plugging the power cable and checking whether it applied the correct configuration.
> 
> 
> Thanks,
> 
> Jan Grulich
> 
>

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