Task Description:
Simulate third party provider which calculates the operations:
add
subtract
divide
multiply
It would accept (val1
, val2
, "operation") and return the result
- Communicates with the Provider
- sends (
val1
,val2
, "operation") from Parser - reacts on the
result
from the Provider
- sends to the DataFacade (
val1
,val2
, "operation") - reacts on the
result
from the DataFacade
Accepts values from StateStore
It has controllers which take the raw values and format them to (val1
, val2
, "operation")
click
andkey
event Listeners- Listeners will send values to the Parser
For example,
2 5 = +
reacts on the result
- buttons and screen
- reacts on the
result
and renders in the screen
- Has to work with integer and decimal numbers in this format:
354
,0.233
,.233
,(87 + .44)
- Operation with only two numbers (
2+6=8
,4*10=40
) - Must be able to input negative numbers:
-2 + -5
- Must have a Clear button: clears everything and resets to
0
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