sintonia/airtime_mvc/application/forms/StreamSetting.php

<?php

class Application_Form_StreamSetting extends Zend_Form
{
    private $setting;

    public function init()
    {

    }

    public function setSetting($setting){
        $this->setting = $setting;
    }

    public function startFrom() {
        $setting = $this->setting;
        if(Application_Model_Preference::GetPlanLevel() == 'disabled'){
            $output_sound_device = new Zend_Form_Element_Checkbox('output_sound_device');
            $output_sound_device->setLabel('Hardware Audio Output')
                                ->setRequired(false)
                                ->setValue(($setting['output_sound_device'] == "true")?1:0)
                                ->setDecorators(array('ViewHelper'));
            if (Application_Model_Preference::GetEnableStreamConf() == "false"){
                $output_sound_device->setAttrib("readonly", true);
            }
            $this->addElement($output_sound_device);

            $output_types = array("ALSA"=>"ALSA", "AO"=>"AO", "OSS"=>"OSS", "Portaudio"=>"Portaudio", "Pulseaudio"=>"Pulseaudio");
            $output_type = new Zend_Form_Element_Select('output_sound_device_type');
            $output_type->setLabel("Output Type")
                    ->setMultiOptions($output_types)
                    ->setValue($setting['output_sound_device_type'])
                    ->setDecorators(array('ViewHelper'));
            if($setting['output_sound_device'] != "true"){
                $output_type->setAttrib("disabled", "disabled");
            }
            $this->addElement($output_type);
        }

        # tooltip
        $description = 'This option enables metadata for OGG streams (stream
                    metadata is the track title, artist, and show name that is
                    displayed in an audio player). VLC and mplayer have a
                    serious bug when playing an OGG/VORBIS stream that has
                    metadata information enabled: they will disconnect from the
                    stream after every song. If you are using an OGG stream and
                    your listeners do not require support for these audio
                    players, then feel free to enable this option.';

        $icecast_vorbis_metadata = new Zend_Form_Element_Checkbox('icecast_vorbis_metadata');
        $icecast_vorbis_metadata->setLabel('Icecast Vorbis Metadata')
                                ->setDescription($description)
                                ->setRequired(false)
                                ->setValue(($setting['icecast_vorbis_metadata'] == "true")?1:0)
                                ->setDecorators(array('ViewHelper'));
        if (Application_Model_Preference::GetEnableStreamConf() == "false"){
            $icecast_vorbis_metadata->setAttrib("readonly", true);
        }
        $this->addElement($icecast_vorbis_metadata);

        $stream_format = new Zend_Form_Element_Radio('streamFormat');
        $stream_format->setLabel('Stream Label:');
        $stream_format->setMultiOptions(array("Artist - Title",
                                            "Show - Artist - Title",
                                            "Station name - Show name"));
        $stream_format->setValue(Application_Model_Preference::GetStreamLabelFormat());
        $stream_format->setDecorators(array('ViewHelper'));
        $this->addElement($stream_format);
    }

    public function isValid($data){
        if(isset($data['output_sound_device'])){
            $d = array();
            $d["output_sound_device"] = $data['output_sound_device'];
            $d["icecast_vorbis_metadata"] = $data['icecast_vorbis_metadata'];
            if(isset($data['output_sound_device_type'])){
                $d["output_sound_device_type"] = $data['output_sound_device_type'];
            }
            $d["streamFormat"] = $data['streamFormat'];
            $this->populate($d);
        }
        return true;
    }
}