D10862: Konsole: Add read-only mode

[Joshua Noack]

jnoack planned changes to this revision.
jnoack added a comment.


  In D10862#214408 <https://phabricator.kde.org/D10862#214408>, @ngraham wrote:
  
  > Putting on my VDG hat: we definitely need a visible UI during read-only mode that tells you that the terminal is read-only, or else there is a near-100% chance that people will file bugs after they turn on read-only mode by accident or forget that it's on.
  >
  > Konsole already shows a yellow-colored contextual bar that appears near the top of the window in various other contexts; maybe we could re-use that here?
  
  
  Konsole uses a QLabel to show the bar at the top, which isn't resuable at all without refactoring (I refer to the bar which pops up when CTRL+S is pressed).
  
  Instead I tried to use the KMessageWidget, which looks quite ok imo:
  F5733073: Screenshot_20180228_004027.png <https://phabricator.kde.org/F5733073>
  
  What do you think? Furthermore, once this is ready I would like to port the QLabel-"bar" to the KMessageWidget in another revision as well if nothing speaks against it. Then I can share most of the code.

REPOSITORY
  R319 Konsole

REVISION DETAIL
  https://phabricator.kde.org/D10862

To: jnoack
Cc: ngraham, #konsole, hindenburg
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