/**
* Inserts text into the formula EditText. If an equation was recently solved, it will replace the
* formula's text instead of appending.
*/
protected void insert(String text) {
// Add left parenthesis after functions.
if (mCurrentState.equals(CalculatorState.INPUT)
|| mCurrentState.equals(CalculatorState.GRAPHING)
|| mFormulaEditText.isCursorModified()) {
mFormulaEditText.insert(text);
} else {
mFormulaEditText.setText(text);
incrementGroupId();
}
}
public void onButtonClick(View view) {
mCurrentButton = view;
switch (view.getId()) {
case R.id.eq:
onEquals();
break;
case R.id.del:
onDelete();
break;
case R.id.clr:
onClear();
break;
case R.id.parentheses:
mFormulaEditText.setText('(' + mFormulaEditText.getCleanText() + ')');
break;
case R.id.fun_cos:
case R.id.fun_sin:
case R.id.fun_tan:
case R.id.fun_ln:
case R.id.fun_log:
case R.id.fun_det:
case R.id.fun_transpose:
case R.id.fun_inverse:
case R.id.fun_trace:
case R.id.fun_norm:
case R.id.fun_polar:
// Add left parenthesis after functions.
insert(((Button) view).getText() + "(");
break;
case R.id.op_add:
case R.id.op_sub:
case R.id.op_mul:
case R.id.op_div:
case R.id.op_fact:
case R.id.op_pow:
mFormulaEditText.insert(((Button) view).getText().toString());
break;
default:
insert(((Button) view).getText().toString());
break;
}
}