/**
* This method process the command given by the user and call the right action to be applied.
* @param Array $command
* @param string $canvas_string
* @return string
*/
public function process_command()
{
//Obj to handle messages
$messages = new messages();
if ($this->values_ok) {
switch (strtoupper($this->command_array[0])) {
//Create a Canvas
case 'C':
if (count($this->command_array) == 3) {
$command = $this->command_array;
$this->canvas = new canvas($command[1], $command[2]);
$messages->set_message('general-ok-0');
} else {
$messages->set_message('general-error-0');
$messages->is_reload();
}
break;
//Print a Line
//Print a Line
case 'L':
if (!$this->canvas->get_canvas_state()) {
$messages->set_message('line-error-1');
} elseif (count($this->command_array) == 5) {
$command = $this->command_array;
$this->canvas->draw_line(array($command[1], $command[2]), array($command[3], $command[4]), $messages);
$messages->set_message('general-ok-0');
} else {
$messages->set_message('general-error-0');
}
break;
//Print a Rectangle
//Print a Rectangle
case 'R':
if (!$this->canvas->get_canvas_state()) {
$messages->set_message('rec-error-0');
} elseif (count($this->command_array) == 5) {
$command = $this->command_array;
$this->canvas->draw_rectangle(array($command[1], $command[2]), array($command[3], $command[4]));
$messages->set_message('general-ok-0');
} else {
$messages->set_message('general-error-0');
}
break;
//Bucket fill action
//Bucket fill action
case 'B':
if (!$this->canvas->get_canvas_state()) {
$messages->set_message('line-error-1');
} elseif (count($this->command_array) == 4) {
$command = $this->command_array;
$this->canvas->bucket_fill(array($command[1], $command[2]), $command[3]);
$messages->set_message('general-ok-0');
} else {
$messages->set_message('general-error-0');
}
break;
//Restart the app
//Restart the app
case 'Q':
$messages->set_message('general-ok-0');
$messages->is_reload();
break;
default:
break;
}
} else {
return false;
}
return $this->canvas->get_canvas_string($messages) . '<br/>' . $messages->get_current_message();
}
