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[Calculator] Further steps

 

Hi, All,

Here is my current proposal:
http://i.imgur.com/HcrFN7u.png

"C" - cleans current calculation and adds to history. Shouldn't add to
history. Riccardo could you fix that?

"←" -backspace button. Not working yet. (again task for Riccardo)

"=" - cleans current calculation and adds to history

"+-" button not used as it has low value.

Ignore colors as for now.

Other design decisions (tasks) to discuss from:
http://design.canonical.com/2013/03/app-patterns-applied-calculator-key-journeys/

"Start a new calculation"

There are several reasons not to implement this:
1. We calculate automatically.
2. "=" button starts new calculation.
3. It is non intuitive.
4. It is complicated to implement as it conflicts with numpad being footer
of history listview.

"Delete a calculation"

Temirlan, are you still willing to implement this?

Riccardo, I have written one bug to you.

I will look into dependency bug.

Regards,
Dalius

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