Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-14 Thread Matthias Kuhn
Hi Bernhard,

On 14.10.2014 07:36, Bernhard Ströbl wrote:
 Hi Matthias,

 thank you for your work!

Thank you for the review
 However I have some small issues and a bug [1]
 - I do not see any notification when not in edit mode but my action
 requires edit mode (edit mode is turned on, though, when clicking OK)

That was just fixed
 - shouldn't create virtual field be the default when layer is not in
 edit mode?

I think it's more predictable (and therefore increases usability) for
users if it's either always on or always off by default. Don't you think?

 - could the check box create virtual field be placed to the right of
 create a new field?

Create a new field is a group box.
Would you create another group box with all field type widgets? I doubt
it's easy to place it in the group box header as well. But I could
easily take it to the top, just below the header.

Best regards
Matthias

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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-14 Thread Matthias Kuhn
Hi Bernhard

 - shouldn't create virtual field be the default when layer is not in
 edit mode?

 I think it's more predictable (and therefore increases usability) for
 users if it's either always on or always off by default. Don't you
 think?

 Ok, agreed, so I opt for always on because it will always work

It should be always on for providers that do not allow to add
attributes. For others both options always work and I prefer to keep the
previous behavior (without broad agreement that this should be changed,
if you convince some people I may change my mind ;-) ).



 - could the check box create virtual field be placed to the right of
 create a new field?

 Create a new field is a group box.
 Would you create another group box with all field type widgets?

 No of course not :-) I was not aware of the group box. I just had the
 impression it should be there, so moving it on top seems adequate.

Done!

Cheers
Matthias

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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-14 Thread Bernhard Ströbl

Hi Matthias,

Am 14.10.2014 09:56, schrieb Matthias Kuhn:

Hi Bernhard


- shouldn't create virtual field be the default when layer is not in
edit mode?


I think it's more predictable (and therefore increases usability) for
users if it's either always on or always off by default. Don't you
think?


Ok, agreed, so I opt for always on because it will always work


It should be always on for providers that do not allow to add
attributes.


But thus the behaviour is not predictable either (from a user's point of 
view, who is just loading data into his/her project). Virtual field will 
_always_ work, no matter which provider.


For others both options always work and I prefer to keep the

previous behavior (without broad agreement that this should be changed,
if you convince some people I may change my mind ;-) ).


Anybody has an opinion on this?

Bernhard







- could the check box create virtual field be placed to the right of
create a new field?


Create a new field is a group box.
Would you create another group box with all field type widgets?


No of course not :-) I was not aware of the group box. I just had the
impression it should be there, so moving it on top seems adequate.


Done!

Cheers
Matthias





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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-13 Thread Matthias Kuhn

Hi all,

The changes have been merged to master today.

 * Virtual fields are now defined from the field calculator.
 * The field calculator is always available, regardless of provider 
support and edit mode.
 * If an action from the field calculator requires to turn edit mode 
on, the user will be notified on the field calculator dialog that this 
will happen automatically when clicking ok.


Please test this and open issue reports if things are not working as 
expected. Thank you very much.


Matthias
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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-13 Thread Bernhard Ströbl

Hi Matthias,

thank you for your work!
However I have some small issues and a bug [1]
- I do not see any notification when not in edit mode but my action 
requires edit mode (edit mode is turned on, though, when clicking OK)
- shouldn't create virtual field be the default when layer is not in 
edit mode?
- could the check box create virtual field be placed to the right of 
create a new field?


all the best

Bernhard

[1] http://hub.qgis.org/issues/11403

Am 13.10.2014 18:11, schrieb Matthias Kuhn:

Hi all,

The changes have been merged to master today.

  * Virtual fields are now defined from the field calculator.
  * The field calculator is always available, regardless of provider
support and edit mode.
  * If an action from the field calculator requires to turn edit mode
on, the user will be notified on the field calculator dialog that this
will happen automatically when clicking ok.

Please test this and open issue reports if things are not working as
expected. Thank you very much.

Matthias



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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Bernhard Ströbl

Hi Matthias,

there seems to be a small bug in the add field stuff: scenario
1) add a virtual field
2) add a permanent field = field is added but marked as virtual 
(symbol) and name is that of the virtual field added in step 1) BUG!
3) close and reopen layer properties = field from step 2) is displayed 
as it should, so the bug is on the display side only


tested with e5850f3

to your question: I think the current editing-mode behavior is 
intuitive. What is not intuitive is that the expression editor can only 
be launched when adding a virtual field. I am aware that I can add a 
(permanent) field with the field calculator but this whole business is 
IMHO not consistent.

This would be consistent:
1) in field calculator if choosing to add a new field offer to make it 
virtual or permanent (permanent being default)
2) make add-field dialog be the same no matter if adding a permanent or 
virtual field.


regards

Bernhard

Am 06.10.2014 21:12, schrieb Matthias Kuhn:

Hi,

I merged a commit today that fixes some problems with virtual fields, in
particular a crash when removing a virtual field.
As the virtual fields do not work on the data provider, they are not
directly linked to edit mode being turned on. This also allows to add
virtual fields on data providers that do not allow to add additional
fields. This led to a change in the GUI, that you are also allowed to
add fields when edit mode is turned off. I added an info, that editing
mode will be turned on, when adding real (provider) fields on the add
field dialog.
However, I am not sure how intuitive the current behavior is. As we are
approaching the final release date, I thought I'd explicitly point out
this change and ask for feedback so we can take measures if there is
hesitation to this approach.

Please share your impression and if you disagree with the current
approach it would be highly welcome if you could outline an improved way
of tackling this.

Matthias



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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Matthias Kuhn
Thank you for testing Bernhard,


On 07.10.2014 10:06, Bernhard Ströbl wrote:
 Hi Matthias,

 there seems to be a small bug in the add field stuff: scenario
 1) add a virtual field
 2) add a permanent field = field is added but marked as virtual
 (symbol) and name is that of the virtual field added in step 1) BUG!
 3) close and reopen layer properties = field from step 2) is
 displayed as it should, so the bug is on the display side only

Could you open an issue report for this so we don't forget? Thank you.


 tested with e5850f3

 to your question: I think the current editing-mode behavior is
 intuitive. What is not intuitive is that the expression editor can
 only be launched when adding a virtual field. I am aware that I can
 add a (permanent) field with the field calculator but this whole
 business is IMHO not consistent.
 This would be consistent:
 1) in field calculator if choosing to add a new field offer to make it
 virtual or permanent (permanent being default)

It could go there indeed, good idea.

 2) make add-field dialog be the same no matter if adding a permanent
 or virtual field.

I don't completely follow. Do you propose to remove the virtual field
from the add field in favor of 1) or is the intention something else?

Best
Matthias

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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Bernhard Ströbl

Hi Matthias

Am 07.10.2014 14:06, schrieb Matthias Kuhn:

Thank you for testing Bernhard,


On 07.10.2014 10:06, Bernhard Ströbl wrote:

Hi Matthias,

there seems to be a small bug in the add field stuff: scenario
1) add a virtual field
2) add a permanent field = field is added but marked as virtual
(symbol) and name is that of the virtual field added in step 1) BUG!
3) close and reopen layer properties = field from step 2) is
displayed as it should, so the bug is on the display side only


Could you open an issue report for this so we don't forget? Thank you.


done : http://hub.qgis.org/issues/11342
I assigned it to you




tested with e5850f3

to your question: I think the current editing-mode behavior is
intuitive. What is not intuitive is that the expression editor can
only be launched when adding a virtual field. I am aware that I can
add a (permanent) field with the field calculator but this whole
business is IMHO not consistent.
This would be consistent:
1) in field calculator if choosing to add a new field offer to make it
virtual or permanent (permanent being default)


It could go there indeed, good idea.


will the field calcuator be active all the time then?
just thinking of consequences




2) make add-field dialog be the same no matter if adding a permanent
or virtual field.


I don't completely follow. Do you propose to remove the virtual field
from the add field in favor of 1) or is the intention something else?


no, proposals 1) and 2) are independent from each other.
proposal 2) means, that the expression builder should be offered when 
adding a permanent field, too, thus not changing the dialog when user 
changes his choice of permanent/virtual.
Scenario is: user wants to add a permanent field and fill it with an 
expression. Now it is either

1) add field and accept
2) open calculator, choose field
3) define expression and accept
or:
1) set editable
2) open calculator
3) define expression and accept

future behaviour would be:
1) add field
2) define expression and accept

Bernhard



Best
Matthias




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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Matthias Kuhn
Hi Bernhard,

On 07.10.2014 14:28, Bernhard Ströbl wrote:



 tested with e5850f3

 to your question: I think the current editing-mode behavior is
 intuitive. What is not intuitive is that the expression editor can
 only be launched when adding a virtual field. I am aware that I can
 add a (permanent) field with the field calculator but this whole
 business is IMHO not consistent.
 This would be consistent:
 1) in field calculator if choosing to add a new field offer to make it
 virtual or permanent (permanent being default)

 It could go there indeed, good idea.

 will the field calcuator be active all the time then?
 just thinking of consequences

Yes


 2) make add-field dialog be the same no matter if adding a permanent
 or virtual field.

 I don't completely follow. Do you propose to remove the virtual field
 from the add field in favor of 1) or is the intention something else?

 no, proposals 1) and 2) are independent from each other.
 proposal 2) means, that the expression builder should be offered when
 adding a permanent field, too, thus not changing the dialog when user
 changes his choice of permanent/virtual.
 Scenario is: user wants to add a permanent field and fill it with an
 expression. Now it is either
 1) add field and accept
 2) open calculator, choose field
 3) define expression and accept
 or:
 1) set editable
 2) open calculator
 3) define expression and accept

 future behaviour would be:
 1) add field
 2) define expression and accept

I think if the user wants to add a permanent field with the help of an
expression the current solution with the field calculator is fine. I
don't see any benefit that the add field dialog would have over that.
On the other hand defining the virtual fields in the field calculator
(and removing them from add field) could make things more coherent.

Any opinions about this?

Matthias

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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Bernhard Ströbl

Hi Matthias,

Am 07.10.2014 14:40, schrieb Matthias Kuhn:

Hi Bernhard,

On 07.10.2014 14:28, Bernhard Ströbl wrote:






tested with e5850f3

to your question: I think the current editing-mode behavior is
intuitive. What is not intuitive is that the expression editor can
only be launched when adding a virtual field. I am aware that I can
add a (permanent) field with the field calculator but this whole
business is IMHO not consistent.
This would be consistent:
1) in field calculator if choosing to add a new field offer to make it
virtual or permanent (permanent being default)


It could go there indeed, good idea.


will the field calcuator be active all the time then?
just thinking of consequences


Yes





2) make add-field dialog be the same no matter if adding a permanent
or virtual field.


I don't completely follow. Do you propose to remove the virtual field
from the add field in favor of 1) or is the intention something else?


no, proposals 1) and 2) are independent from each other.
proposal 2) means, that the expression builder should be offered when
adding a permanent field, too, thus not changing the dialog when user
changes his choice of permanent/virtual.
Scenario is: user wants to add a permanent field and fill it with an
expression. Now it is either
1) add field and accept
2) open calculator, choose field
3) define expression and accept
or:
1) set editable
2) open calculator
3) define expression and accept

future behaviour would be:
1) add field
2) define expression and accept


I think if the user wants to add a permanent field with the help of an
expression the current solution with the field calculator is fine. I
don't see any benefit that the add field dialog would have over that.


it does not really have any, but I was wondering why I can use an 
expression for virtual fields and not for permanent fields



On the other hand defining the virtual fields in the field calculator
(and removing them from add field) could make things more coherent.


+1, this would make the expression thing in the add field dialog needless
add/remove field would be only for working on the data structure; the 
layer must be in editing mode, which makes your original question 
obolete :) or now it is applicable to the calculator


all the best

Bernhard



Any opinions about this?

Matthias



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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Matthias Kuhn
Hi
On 07.10.2014 14:56, Bernhard Ströbl wrote:

 I think if the user wants to add a permanent field with the help of an
 expression the current solution with the field calculator is fine. I
 don't see any benefit that the add field dialog would have over that.

 it does not really have any, but I was wondering why I can use an
 expression for virtual fields and not for permanent fields

 On the other hand defining the virtual fields in the field calculator
 (and removing them from add field) could make things more coherent.

 +1, this would make the expression thing in the add field dialog
 needless
 add/remove field would be only for working on the data structure; the
 layer must be in editing mode, which makes your original question
 obolete :) or now it is applicable to the calculator

Remove field would still be available out of edit mode to remove virtual
fields.
Add field would only be available in edit mode. But the field calculator
instead available out of edit mode.


Best
Matthias
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Re: [Qgis-developer] Virtual Fields - Allow adding fields out of edit mode

2014-10-07 Thread Bernhard Ströbl



Am 07.10.2014 15:07, schrieb Matthias Kuhn:

Hi
On 07.10.2014 14:56, Bernhard Ströbl wrote:



I think if the user wants to add a permanent field with the help of an
expression the current solution with the field calculator is fine. I
don't see any benefit that the add field dialog would have over that.


it does not really have any, but I was wondering why I can use an
expression for virtual fields and not for permanent fields


On the other hand defining the virtual fields in the field calculator
(and removing them from add field) could make things more coherent.


+1, this would make the expression thing in the add field dialog
needless
add/remove field would be only for working on the data structure; the
layer must be in editing mode, which makes your original question
obolete :) or now it is applicable to the calculator


Remove field would still be available out of edit mode to remove virtual
fields.
Add field would only be available in edit mode. But the field calculator
instead available out of edit mode.


ok, sounds good

Bernhard




Best
Matthias


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