> On May 9, 2012, 6:30 p.m., Mark Gaiser wrote:
> > Ehh optional perhaps?
> > I've seen forms behave like this before and back then when i first saw it i 
> > tried to delete the text.. Which obviously didn't happen. The text just 
> > disappears as soon as i start typing. I kinda dislike that behavior. I 
> > mean, there is a big fat blue focus border that has the purpose of telling 
> > the user that the one with the blue border (style dependent) is the one 
> > that currently has focus. The blinking cursor is yet another indication 
> > that the field has focus. I think that is enough.
> > 
> > Perhaps optional, but please not by default. This is just my opinion and i 
> > don't maintain plasma components (nor anything in KDE for that matter). 
> > You'd have to wait for a reply from some of the plasma component 
> > maintainers to get a final word on this.
> 
> Sebastian Kügler wrote:
>     This just fixes a race condition, I don't quite understand your 
> reservation, Mark?
> 
> David Edmundson wrote:
>     No it doesn't. Currently if you give an item focus you hide the 
> placeholder text. In this patch it only hides placeholder text after you 
> start typing.
> 
> David Edmundson wrote:
>      ^ That reply was at Sebastian where he says it's a fix, where it's 
> actually a large visual change. (reviewboard doesn't really show that very 
> well)
> 
> Sebastian Kügler wrote:
>     Funny, because I ran into this exact behaviour last night, and to make it 
> work well, I had to resort to using a Timer which calls forceActiveFocus() on 
> the TextArea, not quite intuitive either.
>     
>     Does anyone have a suggestion which satisfies both usecase without hacks?
> 
> Sebastian Gottfried wrote:
>     Using a timer to give a text field the focus sounds really strange in my 
> ears.
>     
>     We could obviously extend the API of the text fields with a boolean 
> property "showPlaceholderWhileFocused" and give the responsibility to decide 
> on the wanted behaviour to the application developer. But at least me would 
> prefer a consistent behaviour for all text fields.
> 
> Mark Gaiser wrote:
>     The behavior is consistent right now. The defacto "standard" on the 
> internet right now for forms seems to be to have a placeholder text and 
> remove the placeholder as soon as the field gets focus. However, lately there 
> have been more sites that do keep the placeholder even while focused and only 
> moves away if you start typing. Like for example the twitter login page 
> (though that does make the placeholder text a bit more transparent when you 
> have the focus).
>     
>     I think both options should be provided, but the default should be to 
> remove the placeholder as soon as it gets focus.
>     
>     Yet again just my opinion.
> 
> Mathias Kraus wrote:
>     How about the following:
>     - pre-focused text field shows the placeholder
>     - if the user press any key (e.g. Esc, arrow keys, backspace) or starts 
> typing, the placeholder disappears and does't appear again, even if the text 
> field is empty
>     - it the user clicks into a text field, the placeholder also disappears 
> immediatelly
> 
> Laszlo Papp wrote:
>     I do not have too strong opinions about either way; just some additional 
> data fwiw:
>     
>     1) QLineEdit - clear for focus
>     http://qt-project.org/doc/qt-4.8/qlineedit.html#placeholderText-prop
>     
>     2) KLineEdit - most likely the same since there is no such an addition 
> for KLineEdit, but inherits this from QLineEdit
>     
>     3) Harmattan components: clear for typing
>     
>     4) Symbian components: 
> http://doc.qt.nokia.com/qt-components-symbian/qml-textfield.html#placeholderText-prop
>     
>     5) Interesting that the following html practice shares the opinions as 
> well:
>     
> http://www.w3schools.com/html5/tryit.asp?filename=tryhtml5_input_placeholder
>     
>     On Linux with firefox, rekonq and so forth, it produces the behavior that 
> the placeholder is gone for focus. On the contrary, the form keeps the 
> placeholder until typing on Windows.
> 
> Thomas Lübking wrote:
>     The reason for the "clear on focus" behavior is to not confuse the user 
> about the content as soon as the entry is focused ("about to be used")
>     
>     The "legacy" way in this regard (pre-focused & hinting lineedits) was to 
> also prefill the lineedit with the hint and pre-select the entire text 
> (especially if you really just want some input here or assume a "Cancel" 
> otherwise)
>     Maybe -and if an empty string is no valid entry- one could merge those - 
> start with the prefilled selection, remove it and show the hint when the 
> focus is lost w/o typing.
>     No idea whether this can be done in a purely declarative way, though.
>     
>     As for changing the focus with a timer, ie. while the event chain is 
> running - a hack that would QTimer::singleShot(3, this, SLOT) to cross some 
> queued init code is one thing (not deterministic but may still do the job) - 
> stuff like QTimer::singleShot(5000, this, SLOT) to show the hint for some 
> seconds and then activate the linenedit means tricking the user (you could 
> usually as well QTimer::singleShot(randomTime, this, randomSlot) - good way 
> to piss users ;-)

Little bit off-topic, so pardon me. I have just come across (again) our KDE Api 
site:
http://api.kde.org

1) Search field on the left
2) "search term" placeholder
3) I can paste a text from the clipboard in there, and the placeholder still 
remains.

I have not used the Plasma Components much, but I hope there are no such 
situations whatever the decision will be. :-)


- Laszlo


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http://git.reviewboard.kde.org/r/104895/#review13617
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On May 9, 2012, 4:53 p.m., Sebastian Gottfried wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/104895/
> -----------------------------------------------------------
> 
> (Updated May 9, 2012, 4:53 p.m.)
> 
> 
> Review request for KDE Runtime.
> 
> 
> Description
> -------
> 
> Rationale: This allows the application to pre-focus a text field with a
> placeholder text for the user. In the version before this would have
> hidden the placeholder text and it may not have been obvious for user
> what he was expected to enter in the text field.
> 
> 
> Diffs
> -----
> 
>   plasma/declarativeimports/plasmacomponents/qml/TextArea.qml 2d9e89f 
>   plasma/declarativeimports/plasmacomponents/qml/TextField.qml 4ed15d9 
> 
> Diff: http://git.reviewboard.kde.org/r/104895/diff/
> 
> 
> Testing
> -------
> 
> Used it in ktouch/next, works fine.
> 
> 
> Screenshots
> -----------
> 
> Form in KTouch
>   http://git.reviewboard.kde.org/r/104895/s/562/
> 
> 
> Thanks,
> 
> Sebastian Gottfried
> 
>

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