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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/126895/">https://git.reviewboard.kde.org/r/126895/</a>
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<p style="margin-top: 0;">On January 26th, 2016, 6:40 p.m. UTC, <b>Aleix Pol Gonzalez</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;">Hi,
I'm a bit afraid of all these ifndef. Do you think it would make sense to abstract out the KGlobalAccel usage?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Otherwise, would it be possible to make KGlobalAccel useful (or just dumb) on Windows?</p></pre>
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<p>On January 26th, 2016, 6:53 p.m. UTC, <b>Boudewijn Rempt</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;">I would say: most applications do not need global accelerators, so making kglobalaccel functional on windows is not really relevant, you wouldn't want that dependency anyway because it doesn't add functionality. And building a library and including it is always a burden, so I would say it's much better to make it optional.</p></pre>
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<p>On January 26th, 2016, 6:55 p.m. UTC, <b>Andre Heinecke</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;">Hi,</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Abstracting it out would also be quite invasive imho. And from my experience abstraced (optional) features are even harder to maintain then ifdefs where you can easily see the codepath taken when something is not available. While side effects through abstraction are harder to see when hacking on code.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">As for the other point:
- GlobalAccel means that you basically need to have a keylogger on your platform. I don't want that. There are system ways on Windows to create global shortcuts already. Not as fine grained as KDE Actions but you could use them to do command line calls.
- I don't really see this as a Windows only thing. KXmlGui provides very useful features even without Global Shortcuts. And as for making KGlobalAccel just dumb on Windows. While I think this would generally be a good idea I expect that others (from Kde-Windows) who provide several KDE applications and stuff like Systemsettings on Windows would disagree.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">We could add a dummy class in KXmlGui thats used if KGlobalAccel is not available? This could avoid lots of ifdefs. But this would add a bit maintenance cost when new API is used. While the IFDEFS make it quite transparent to hackers that if you do thomething with GlobalAccel "please guard it".</p></pre>
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<p>On January 27th, 2016, 12:42 a.m. UTC, <b>Aleix Pol Gonzalez</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;">@boud, yes, I also thought about your RR, in fact I looked it up but couldn't find it.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Ok, maybe it's actually the way to make xmlgui viable to deploy.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Take this as a +1 by me.</p></pre>
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<p>On January 27th, 2016, 7:06 a.m. UTC, <b>Martin Gräßlin</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;">Could we maybe continue the route I went with making sure that kglobalaccel doesn't start? I'm quite concerned about the ifdefs. If there are still situations where kglobalacceld is started without being needed, let's fix that. Let's make it a proper runtime thing instead of an ifdef messery nobody will check.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I'm quite concerned about making the change optional as that's a route to breakage with distros and as the maintainer of kglobalaccel I'm not looking forward to those bug reports.</p></pre>
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<p>On January 27th, 2016, 7:37 a.m. UTC, <b>Boudewijn Rempt</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;">Well, part of the point, for me at least, is not having the dependency at all. Any extra library, especially one that adds no functionality but is just present, is a burden just like #idefs are a burden.</p></pre>
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<p>On January 27th, 2016, 8:06 a.m. UTC, <b>Martin Gräßlin</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;">What can we do to make the burden not so hard on your side without adding the ifdefs? KGlobalaccel is basically a tier 1 - the higher number is due to the runtime part. Would it help to make the runtime part optional? Would it help to have a BC drop in replacement which just no-ops?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">By doing the change as suggested here new burden is created and moved to the shoulders of others. E.g. all Linux distributions which now have to be more careful with packaging. So we need to find the right balance.</p></pre>
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<p>On January 27th, 2016, 8:40 a.m. UTC, <b>Boudewijn Rempt</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;">Well, for me personally it's water under the bridge. On the other hand, I don't think that it's a burden for distributions: distributions always install every dependency, even if it's optional. That is the big problem that has led over the years to people complaining that Krita needed Marble, for instance.</p></pre>
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<p>On January 27th, 2016, 8:49 a.m. UTC, <b>Andre Heinecke</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;">For me the build problem with KGlobalAccel is the build dependency to DBus. BC drop in with No ops would help (in which case the configuration entries should be completly hidden in the gui). But would a KGlobalAccel without DBus / No-Ops be easier to maintain?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">And the best thing for me is that If I don't want some features to be able not to build them at all instead of a replacement library. And a KGlobalAccel "Dummy" as part of KXmlGui also appears wrong to me.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Also my other two patches make DBus and KTextWidgets optional. For these I definetly think that Ifdefs are the right way to go.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">By doing the change as suggested here new burden is created and moved to the shoulders of others. E.g. all Linux distributions which now have to be more careful with packaging. So we need to find the right balance.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I have to agree with Boudewijn there. We could of course only make it optional on Windows but I would like to avoid making it a platform issue.</p></pre>
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<p>On January 27th, 2016, 9:15 a.m. UTC, <b>Martin Gräßlin</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;"><blockquote style="text-rendering: inherit;padding: 0 0 0 1em;border-left: 1px solid #bbb;white-space: normal;margin: 0 0 0 0.5em;line-height: inherit;">
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">But would a KGlobalAccel without DBus / No-Ops be easier to maintain?</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">if KGlobalAccel in it's current state is so bad that it needs to be patched out of other frameworks, then yes KGlobalAccel needs to be modified. Which is what I already did in the past, when it was brought to my attention that just using xmlgui results in the runtime being started.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Does it make sense to have a DBus free kglobalaccel? Certainly, on non-Linux it doesn't make sense to use DBus.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">So the question to me is: is a stripped down KGlobalAccel (no DBus, no runtime) sufficient to not get it patched out of other frameworks. If yes I think that's the way to go. Is it work? Yes it is, but not that much. It's only one source file with around 700 lines of code.</p></pre>
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<p>On January 27th, 2016, 9:17 a.m. UTC, <b>Boudewijn Rempt</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;">Well, what I am trying to say is that it's wrong to have a depedency on a library, a chunk of code, that doesn't add functionality to the application.</p></pre>
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<p>On January 27th, 2016, 9:28 a.m. UTC, <b>Martin Gräßlin</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;"><blockquote style="text-rendering: inherit;padding: 0 0 0 1em;border-left: 1px solid #bbb;white-space: normal;margin: 0 0 0 0.5em;line-height: inherit;">
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">it's wrong to have a depedency on a library, a chunk of code, that doesn't add functionality to the application.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">aye, but this goes both sides. I could also say that it's wrong to have the ifdefs. This is a balancing act. Adding ifdefs adds costs just like adding the "chunk of code" adds costs. The question is which one adds less. I'd argue that by adding ifdefs to all places which use kglobalaccel you add more costs for the community (we need multiple CI build setups, we need to handle distro issues, making code more difficult to read, more difficult to test). Thus I suggest that we improve the other side. Get kglobalaccel into a state where you don't care that you have that code around. If you absolute insist on your position: yay less work for me.</p></pre>
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<p>On January 27th, 2016, 9:33 a.m. UTC, <b>Andre Heinecke</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;">My point agains this is the same as Boudewijn. Why would we want to create a defunct GlobalAccel package?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">GloabAccel currently provides a useful feature. Global Shortcuts. I would like to see this feature optional in KXMLGui. There are use cases for XMLGui without Global Shortcuts.
Why should we include, build, distribute, include the License etc. Of a chunk of code that adds no functionality to our software?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">And if we wen't that rode wouldn't be the conclusion of this to also create a KTextWidgets package that adds no Features to make this optional?
Or a Dbus package without Dbus that does not add Interprocess communication?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Regarding the CI / Community Overhead you would also have this is you want to really test every variant. Then you would also have to test against a "defunct" KGlobalAccel package or handle reports about issues caused by KGlobalAccel not behaving as expected as it misses runtime parts.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Would it help If I would rework the patch to use a dummy class and reduce ifdef's that way? Might make sense here although I personally find code with Ifdefs clearer to understand then code that behaves differently in the background.</p></pre>
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<p>On January 27th, 2016, 9:59 a.m. UTC, <b>Martin Gräßlin</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;"><blockquote style="text-rendering: inherit;padding: 0 0 0 1em;border-left: 1px solid #bbb;white-space: normal;margin: 0 0 0 0.5em;line-height: inherit;">
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Why should we include, build, distribute, include the License etc. Of a chunk of code that adds no functionality to our software?</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Well it does. The only problem is that this feature is non-functional on Windows, because it uses DBus and nobody ported the runtime part. Both is fixable. On Windows it could use whatever Windows needs and you have working global shortcuts. So of course it adds features. Which is also why I don't buy into it's a disfunctional KGlobalAccel if we make it not depend on DBus. It's a step towards working global shortcuts on Windows.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Would it help If I would rework the patch to use a dummy class and reduce ifdef's that way?</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Less ifdefs is in my opinion always an improvement. My main concern in this review is the ifdef overhead and the danger on breaking on Linux due to making the dependency optional (sorry I'm a burnt child in that regard, have seen it happen too often over the last two years even if sent a dedicated mail to release team to point out about it). Concerning the latter I would rather go for a no-DBus profile or something like that. A global cmake switch to build without DBus and disable all frameworks which need DBus. Similar what we did to disable finding X11 on non-Linux. That way on Linux the dependency would still be required, because you build with DBus support.</p></pre>
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<p>On January 27th, 2016, 5 p.m. UTC, <b>Andre Heinecke</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;"><blockquote style="text-rendering: inherit;padding: 0 0 0 1em;border-left: 1px solid #bbb;white-space: normal;margin: 0 0 0 0.5em;line-height: inherit;">
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Well it does. The only problem is that this feature is non-functional on Windows, because it uses DBus and nobody ported the runtime part. Both is fixable. On Windows it could use whatever Windows needs and you have working global shortcuts. So of course it adds features. Which is also why I don't buy into it's a disfunctional KGlobalAccel if we make it not depend on DBus. It's a step towards working global shortcuts on Windows.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">But I would like to build an KXMLGui application without GlobalShortcut even if they would work. We could implement them for Windows (without dbus) but you still would need to have some process handling them. (Even if its the application itself). I do not want to have that and I do not see that this is useful to have on Windows for the users of Kleopatra. There are already ways for Windows how you could do global shortcuts that would work even if the Application is not running. To include this from a KDE Library would have us maintain windows specific shortcut code and I don't see anyone who would be willing to maintain / test / develop something like that. And it's not really needed there and whatever it would do would be foreign to the platform afaik.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Less ifdefs is in my opinion always an improvement.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I've taken a look at this. Adding a subdirectory kglobalaccel_dummy with a kglobalaccel.h thats included by cmake in case kglobalaccel is not found. But I find this worse then then 29 ifdef's currently added. Dummy subclasses for optional packages are not a pattern we should not establish. I'm not sure for example how kde apidocs would react to a kglobalaccel class in kxmlgui for example. Ifdefs make it more clear if some codepaths are optional. </p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">My main concern in this review is the ifdef overhead.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">29 ifdefs in ~15k lines of code are not that exccessive.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">and the danger on breaking on Linux due to making the dependency optional (sorry I'm a burnt child in that regard, have seen it happen too often over the last two years even if sent a dedicated mail to release team to point out about it).</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Well it is reccommended, as it was a hard depdenency before and is not a new dependency most packagers would have to actively disable that. If they do that and loose global shortcuts. Ok. That's their freedom I guess and not your problem.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Concerning the latter I would rather go for a no-DBus profile or something like that. A global cmake switch to build without DBus and disable all frameworks which need DBus. Similar what we did to disable finding X11 on non-Linux. That way on Linux the dependency would still be required, because you build with DBus support.</p>
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<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">For me it's slightly important that this is not Windows specific so that I can develop / test with it even under GNU/Linux. And generally DBus still also makes sense for usecases on Windows. E.g. a Kontact on Windows would still need functional DBus and such. I think optional is the right way.
CI only for the "recommended" / all optionals found use case would be fine with me but I think this is unrelated.</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;">whether kglobalshortcuts is functional or not is besides the point: the point is that whether it works or not it doesn't add any functionality to the average application. Global shortcuts are useful only for a very limited set of applications, so it should always have been an optional dependency.</p></pre>
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<p>- Boudewijn</p>
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<p>On January 27th, 2016, 8:53 a.m. UTC, Andre Heinecke wrote:</p>
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<div>Review request for KDE Frameworks.</div>
<div>By Andre Heinecke.</div>
<p style="color: grey;"><i>Updated Jan. 27, 2016, 8:53 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kxmlgui
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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;">This is part of a three patch series that aims to allow a "leightweight" build of KXmlGui without DBus and KService dependencies. I've added the patches to: https://phabricator.kde.org/T1390 I'm not sure if I can create reviews that depend on changes from another review, I'll try and if it does not work I'll open one after another.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Global shortcuts are a nice optional feature to have. But as they are not strictly neccessary for the core functionality of KXmlGui, as I see it, and pull in an extra dependency to DBus and need runtime support on the target platform they should be optional.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This (and the other changes) add lots of unloved ifdefs, I could understand if thats disliked. But let me explain the background of this change:</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">I'm currently updating Kleopatra in Gpg4win to a KDE Frameworks based build. This is nice. Frameworks are awesome, I can just pick what I need and don't have dependencies to lots of things that are actually not needed.
Then comes KXmlGui, adds 20 Framework dependencies, and I don't know what to do.
I want:
- configureable "KDE Style" GUI
- configurable Shortcuts
- KDE Standardactions (e.g. Help / WhatsThis)
- kbugreport
- KDE Integration in an KDE Environment</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">But I don't want:
- Global Shortcuts (we don't have kded so this won't work for us anyway)
- DBus (our dbus is directory scoped and there are no other applications using dbus installed by us)
- KService dependency (System configuration has been troublesome in the past on Windows and is not neccessary if we provide just a single installation)</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">So these Patches are my way out of this Problem. Without the optional packages KXmlGui provides what I want and does not depend on what I don't want.</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;">Compiled with and without dependency. Tested Kleopatra against it.
Not yet tested on Windows, will do so in the next days.</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>CMakeLists.txt <span style="color: grey">(9d79619)</span></li>
<li>src/CMakeLists.txt <span style="color: grey">(58f0c7a)</span></li>
<li>src/config-xmlgui.h.cmake <span style="color: grey">(07c882f)</span></li>
<li>src/kactioncollection.cpp <span style="color: grey">(9c45725)</span></li>
<li>src/kkeysequencewidget.cpp <span style="color: grey">(b2e2b6a)</span></li>
<li>src/kshortcuteditwidget.cpp <span style="color: grey">(670d031)</span></li>
<li>src/kshortcutseditor.cpp <span style="color: grey">(99dfb3d)</span></li>
<li>src/kshortcutseditoritem.cpp <span style="color: grey">(461a90c)</span></li>
<li>src/kxmlguifactory.cpp <span style="color: grey">(2767e69)</span></li>
</ul>
<p><a href="https://git.reviewboard.kde.org/r/126895/diff/" style="margin-left: 3em;">View Diff</a></p>
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