qcubed/framework

<?php
require_once('../qcubed.inc.php');

class CalculatorForm extends QForm {

    // Our Calculator needs 2 Textboxes (one for each operand)
    // A listbox of operations to choose from
    // A button to execute the calculation
    // And a label to output the result
    protected $txtValue1;
    protected $txtValue2;
    protected $lstOperation;
    protected $btnCalculate;
    protected $lblResult;

    // Define all the QContrtol objects for our Calculator
    protected function Form_Create() {
        $this->txtValue1 = new QTextBox($this);

        $this->txtValue2 = new QTextBox($this);

        $this->lstOperation = new QListBox($this);
        $this->lstOperation->AddItem('+', 'add');
        $this->lstOperation->AddItem('-', 'subtract');
        $this->lstOperation->AddItem('*', 'multiply');
        $this->lstOperation->AddItem('/', 'divide');

        $this->btnCalculate = new QButton($this);
        $this->btnCalculate->Text = 'Calculate';
        $this->btnCalculate->AddAction(new QClickEvent(), new QServerAction('btnCalculate_Click'));

        $this->lblResult = new QLabel($this);
        $this->lblResult->HtmlEntities = false;
    }

    // Perform the necessary operations on the operands, and output the value to the lblResult
    protected function btnCalculate_Click($strFormId, $strControlId, $strParameter) {
        switch ($this->lstOperation->SelectedValue) {
            case 'add':
                $mixResult = $this->txtValue1->Text + $this->txtValue2->Text;
                break;
            case 'subtract':
                $mixResult = $this->txtValue1->Text - $this->txtValue2->Text;
                break;
            case 'multiply':
                $mixResult = $this->txtValue1->Text * $this->txtValue2->Text;
                break;
            case 'divide':
                $mixResult = $this->txtValue1->Text / $this->txtValue2->Text;
                break;
            default:
                throw new Exception('Invalid Action');
        }

        $this->lblResult->Text = '<b>Your Result:</b> ' . $mixResult;
    }
}

// And now run our defined form
CalculatorForm::Run('CalculatorForm');
?>