[SailfishDevel] Bug in the Silica Reference docs and possible bug in the Dialog component

Superpelican superpelican at zoho.com
Mon Aug 12 09:57:51 UTC 2013

Hello Matthew,

Thanks a lot for your quick reply!

The acceptDestinationAction property is exactly what I'm looking for. :) 
The dialog on the pageStack should indeed be replaced with the 
questionPage. I already had the acceptDestination set to questionPage, 
but wasn't aware of the existence of the acceptDestinationAction property.

Thanks for all your help,


On 08/12/2013 12:58 AM, Matthew Vogt wrote:
> Hi Superpelican, thanks for the explanation.
> What you want is for the dialog which selects the multiplier to be 
> transitory, right?  So the page sequence will be: initial-page 
> ->dialog -> question-page  -> base-page.
> In this case, you need to use the 'acceptDestination' property of the 
> dialog: 
> https://sailfishos.org/sailfish-silica/qml-sailfishsilica-dialog.html#acceptDestination-prop
> If you set the question-page as the 'acceptDestination' and set the 
> 'acceptDestinationAction' property to 'PageStackAction.Replace', then 
> the effect of accepting the dialog will be to replace the dialog on 
> the stack top with question-page.  The pageStack state will transition 
> directly from [ initial-page, dialog] to [ initial-page, question-page 
> ], and returning from question-page will then go directly back to 
> initial-page.
> Note that you must provide the instance or component for the 
> 'acceptDestination' page before the user has accepted the dialog 
> (because we need to be able to show that page when the user starts to 
> drag right-to-left).  This means you may need to communicate the 
> dialog state at acceptance to the already instantiated question-page, 
> by some means.
> Hope that helps,
> Matt
> ------------------------------------------------------------------------
> *From:* Superpelican [superpelican at zoho.com]
> *Sent:* Monday, August 12, 2013 4:45 AM
> *To:* Matthew Vogt
> *Cc:* devel at lists.sailfishos.org
> *Subject:* Re: [SailfishDevel] Bug in the Silica Reference docs and 
> possible bug in the Dialog component
> Hello Matthew,
> Sorry for my late reply.
> I believe you misunderstood me. I'm not developing a custom Sailfish 
> Dialog component, but creating a Sailfish app.
> The sources can be found here 
> <https://bitbucket.org/Superpelican/quick_clamshell/src>.
> My intent is also not to explicitly pop the dialog of the pageStack, 
> but I was forced to do this, because the dialog doesn't do it itself!
> BTW I have already removed the code that should explicitly pop the 
> dialog of the pageStack because it didn't work.
> >Also, as the implementor of the Dialog, you should use the onDone() 
> handler to react to the user's actions, leaving the accepted() signal 
> to be handled by users of >your dialog.
> Because I'm not creating a custom dialog component, I am actually the 
> user of the dialog, so that's why I'm handling the onAccepted() signal. ;)
> I've demonstrated what I'm experiencing in this video: 
> http://ubuntuone.com/71UqvktzqGWMvukeVTW8Qy 
> <http://ubuntuone.com/71UqvktzqGWMvukeVTW8Qy> (should be viewable in 
> any HTML5 video supporting browser, that supports WebM, like Firefox 
> and Chromium).
> Kind Regards,
> Superpelican
> On 08/05/2013 01:38 PM, Matthew Vogt wrote:
>> Hi Superpelican.
>> Thanks for catching the errors in the Dialog documentation, I will 
>> correct them.
>> In your Clamshell dialog, you do not need to explicitly pop() the 
>> dialog page in response to the accept action; it is popped by the 
>> user's interaction (either a drag or an 'Accept' click), and the 
>> accepted signal is generated in response to this event.
>> Also, as the implementor of the Dialog, you should use the onDone() 
>> handler to react to the user's actions, leaving the accepted() signal 
>> to be handled by users of your dialog.
>> Thanks,
>> Matt
>> ------------------------------------------------------------------------
>> *From:* devel-bounces at lists.sailfishos.org 
>> [devel-bounces at lists.sailfishos.org] on behalf of Superpelican 
>> [superpelican at zoho.com]
>> *Sent:* Sunday, August 04, 2013 8:42 PM
>> *To:* devel at lists.sailfishos.org
>> *Subject:* [SailfishDevel] Bug in the Silica Reference docs and 
>> possible bug in the Dialog component
>> Hello,
>> Sfiet_Konstantin and I have had another debugging session on IRC 
>> recently with my app.
>> (http://merproject.org/logs/%23sailfishos/%23sailfishos.2013-08-03.log)
>> I had defined a handler that would be called when the user accepted a 
>> dialog. However
>> we saw that the handler was never called. Then I noticed that the 
>> documentation page
>> on the Silica Reference about the Dialog component has an error in 
>> it. The description part
>> of the page described that an user can accept a dialog by pushing it 
>> *from right
>> to left*.
>> But the onAccepted() signal hander description described that the 
>> user could accept a dialog
>> by pushing it *from left to right*. Well I tested it in the emulator 
>> and the description of the
>> Dialog component at the top of the page is correct. However the 
>> description of the onAccepted()
>> signal handler is incorrect. Instead when you push the dialog *from 
>> left to right* you *reject it*!
>> So every time I thought I was accepting the dialog, I actually 
>> rejected it! ;) I had only read the wrong part
>> of the documentation page.
>> The onRejected() signal handler description is incorrect too. It says 
>> you can reject a dialog by pushing it
>> *from right to left*. Which actually accepts the dialog.
>> I hope someone can edit the Silica Reference, so that not more 
>> developers read the wrong part and wonder
>> why their defined action doesn't occur! ;)
>> Also we noticed that when a dialog is accepted, it isn't popped from 
>> the pageStack. While according to Sfiet_Konstantin
>> this should happen. This is especially a problem in my app, where the 
>> app has a homescreen where a mode is chosen.
>> Then when a particular mode is chosen the user is first prompted for 
>> a dialog, to enter information that is required for
>> that mode to operate. After the user has accepted the dialog, the 
>> mode begins. The user can quit the mode and return
>> to the homescreen by simply pushing away the "mode page".
>> However when the user does that, the dialog is still there and he/she
>> will have to reject the dialog too and will then finally return to 
>> the homescreen. Not only does this require another action from the user,
>> it can also be confusing to see a dialog with the previously entered 
>> value still in it. Some users will think they need to accept the dialog.
>> But if they do, they'll return to the "mode page", not the 
>> homescreen. This can be very confusing.
>> This can all be seen in this video: 
>> http://ubuntuone.com/7MIfo6vKsdqg9PmgSQ9iH4 
>> <http://ubuntuone.com/7MIfo6vKsdqg9PmgSQ9iH4> (note: this requires a 
>> browser that supports HTML5, otherwise
>> you'll need to download the video and play it in your local video 
>> player). Unfortunately the video has a very low framerate. 
>> Sfiet_Konstantin and I
>> don't know whether this is due to my laptop not being particulary 
>> highly spec'd or Wayland causing the low framerate. I can remember 
>> recording
>> applications and games with another recordmydesktop frontend on a 
>> much lower spec'd computer, so I doubt that computer is too slow.
>> The source code of my app can be found at 
>> http://bitbucket.org/Superpelican/quick_clamshell/src/
>> I hope this is helpful for the sailors/Jollaians,
>> Superpelican

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