Else, there would be a problem with sequence_toolbox, where not all
toolbox leaves are message trees.
Change-Id: Ib4968aad37f6a835b1ea4d77efac2ae1bd19c7ce
The cursor now goes either after the first open parenthesis or at the
end of the command.
Fixed z.real and z.imag.
Change-Id: I46ca3be0415832fd91273ca7fed12ed3d6f125dc
Removed some constants by computing the text to insert in the textfield from the command
with arguments. Used the TextToInsertForCommandMessage method from
toolbox_helpers.h.
Change-Id: I864ad886fb74882f476d74160e427595be27df40
