Review Request 130180: Make advanced options of "open with" dialog collabsible and hidden by default

[Simone Gaiarin]

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https://git.reviewboard.kde.org/r/130180/
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Review request for KDE Frameworks.


Bugs: 359233
    https://bugs.kde.org/show_bug.cgi?id=359233


Repository: kio


Description
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The current "open with" dialog implementation does not follow the KDE principle "Simple by default, powerful when needed" for the following reasons:
- The "run in terminal" and "keep terminal open" options are advanced options and should not be exposed by default
- The primary goal of the dialog should be to select an application from the app tree, running command is an advanced feature

My patch changes the behavior as follow:

- Put the two options in a KCollapsibleComboBox collapsed by default
- The user can expand it only if he needs to use a command line command


Implementation details:
- When the KCollapsibleComboBox is clicked it is expanded upward keeping the dialog size fixed and compressing the treeview, I'm not sure this is the best approach, but to make it expand downwards we need to fix the size of the dialog with setSizeConstraint(QLayout::SetFixedSize); which may not be desiderable. Maybe there is a way to keep the dialog resizable and expand the combobox downwards, but I couldn't find it.
- I've increased the vertical size of the dialog (which I think it was too small) also to accomodate the upward expansion which otherwise would make the app tree almost disappear


Relevant discussions:
https://bugs.kde.org/show_bug.cgi?id=359233
https://forum.kde.org/viewtopic.php?f=285&t=131014


Diffs
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  src/widgets/kopenwithdialog.cpp b28c5b05186bc77413524c99ef61b7967b0ec8b9 

Diff: https://git.reviewboard.kde.org/r/130180/diff/


Testing
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Thanks,

Simone Gaiarin

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