<?php

/**

 * TbInput class file.

 * @author Christoffer Niska <ChristofferNiska@gmail.com>

 * @copyright Copyright &copy; Christoffer Niska 2011-

 * @license http://www.opensource.org/licenses/bsd-license.php New BSD License

 * @package bootstrap.widgets.input

 */



/**

 * Bootstrap input widget.

 * Used for rendering inputs according to Bootstrap standards.

 */

abstract class TbInput extends CInputWidget

{

	// The different input types.

	const TYPE_CHECKBOX = 'checkbox';

	const TYPE_CHECKBOXLIST = 'checkboxlist';

	const TYPE_CHECKBOXLIST_INLINE = 'checkboxlist_inline';

	const TYPE_DROPDOWN = 'dropdownlist';

	const TYPE_FILE = 'filefield';

	const TYPE_PASSWORD = 'password';

	const TYPE_RADIO = 'radiobutton';

	const TYPE_RADIOLIST = 'radiobuttonlist';

	const TYPE_RADIOLIST_INLINE = 'radiobuttonlist_inline';

	const TYPE_TEXTAREA = 'textarea';

	const TYPE_TEXT = 'textfield';

	const TYPE_CAPTCHA = 'captcha';

	const TYPE_UNEDITABLE = 'uneditable';



	/**

	 * @var TbActiveForm the associated form widget.

	 */

	public $form;

	/**

	 * @var string the input label text.

	 */

	public $label;

	/**

	 * @var string the input type.

	 * Following types are supported: checkbox, checkboxlist, dropdownlist, filefield, password,

	 * radiobutton, radiobuttonlist, textarea, textfield, captcha and uneditable.

	 */

	public $type;

	/**

	 * @var array the data for list inputs.

	 */

	public $data = array();

	/**

	 * @var string text to prepend.

	 */

	public $prependText;

	/**

	 * @var string text to append.

	 */

	public $appendText;

	/**

	 * @var string the hint text.

	 */

	public $hintText;

	/**

	 * @var array label html attributes.

	 */

	public $labelOptions = array();

	/**

	 * @var array prepend html attributes.

	 */

	public $prependOptions = array();

	/**

	 * @var array append html attributes.

	 */

	public $appendOptions = array();

	/**

	 * @var array hint html attributes.

	 */

	public $hintOptions = array();

	/**

	 * @var array error html attributes.

	 */

	public $errorOptions = array();

	/**

	 * @var array captcha html attributes.

	 */

	public $captchaOptions = array();



	/**

	 * Initializes the widget.

	 * @throws CException if the widget could not be initialized.

	 */

	public function init()

	{

		if (!isset($this->form))

			throw new CException(__CLASS__.': Failed to initialize widget! Form is not set.');



		if (!isset($this->model))

			throw new CException(__CLASS__.': Failed to initialize widget! Model is not set.');



		if (!isset($this->type))

			throw new CException(__CLASS__.': Failed to initialize widget! Input type is not set.');



		if ($this->type === self::TYPE_UNEDITABLE)

		{

			if (isset($this->htmlOptions['class']))

				$this->htmlOptions['class'] .= ' uneditable-input';

			else

				$this->htmlOptions['class'] = 'uneditable-input';

		}



		$this->processHtmlOptions();

	}



	/**

	 * Processes the html options.

	 */

	protected function processHtmlOptions()

	{

		if (isset($this->htmlOptions['prepend']))

		{

			$this->prependText = $this->htmlOptions['prepend'];

			unset($this->htmlOptions['prepend']);

		}



		if (isset($this->htmlOptions['append']))

		{

			$this->appendText = $this->htmlOptions['append'];

			unset($this->htmlOptions['append']);

		}



		if (isset($this->htmlOptions['hint']))

		{

			$this->hintText = $this->htmlOptions['hint'];

			unset($this->htmlOptions['hint']);

		}



		if (isset($this->htmlOptions['labelOptions']))

		{

			$this->labelOptions = $this->htmlOptions['labelOptions'];

			unset($this->htmlOptions['labelOptions']);

		}



		if (isset($this->htmlOptions['prependOptions']))

		{

			$this->prependOptions = $this->htmlOptions['prependOptions'];

			unset($this->htmlOptions['prependOptions']);

		}



		if (isset($this->htmlOptions['appendOptions']))

		{

			$this->appendOptions = $this->htmlOptions['appendOptions'];

			unset($this->htmlOptions['appendOptions']);

		}



		if (isset($this->htmlOptions['hintOptions']))

		{

			$this->hintOptions = $this->htmlOptions['hintOptions'];

			unset($this->htmlOptions['hintOptions']);



		}



		if (isset($this->htmlOptions['errorOptions']))

		{

			$this->errorOptions = $this->htmlOptions['errorOptions'];

			unset($this->htmlOptions['errorOptions']);

		}



		if (isset($this->htmlOptions['captchaOptions']))

		{

			$this->captchaOptions = $this->htmlOptions['captchaOptions'];

			unset($this->htmlOptions['captchaOptions']);

		}

	}



	/**

	 * Runs the widget.

	 * @throws CException if the widget type is invalid.

	 */

	public function run()

	{

		switch ($this->type)

		{

			case self::TYPE_CHECKBOX:

				$this->checkBox();

				break;



			case self::TYPE_CHECKBOXLIST:

				$this->checkBoxList();

				break;



			case self::TYPE_CHECKBOXLIST_INLINE:

				$this->checkBoxListInline();

				break;



			case self::TYPE_DROPDOWN:

				$this->dropDownList();

				break;



			case self::TYPE_FILE:

				$this->fileField();

				break;



			case self::TYPE_PASSWORD:

				$this->passwordField();

				break;



			case self::TYPE_RADIO:

				$this->radioButton();

				break;



			case self::TYPE_RADIOLIST:

				$this->radioButtonList();

				break;



			case self::TYPE_RADIOLIST_INLINE:

				$this->radioButtonListInline();

				break;



			case self::TYPE_TEXTAREA:

				$this->textArea();

				break;



			case self::TYPE_TEXT:

				$this->textField();

				break;



			case self::TYPE_CAPTCHA:

				$this->captcha();

				break;



			case self::TYPE_UNEDITABLE:

				$this->uneditableField();

				break;



			default:

				throw new CException(__CLASS__.': Failed to run widget! Type is invalid.');

		}

	}



	/**

	 * Returns the label for the input.

	 * @return string the label

	 */

	protected function getLabel()

	{

		if ($this->label !== false && !in_array($this->type, array('checkbox', 'radio')) && $this->hasModel())

			return $this->form->labelEx($this->model, $this->attribute, $this->labelOptions);

		else if ($this->label !== null)

			return $this->label;

		else

			return '';

	}



	/**

	 * Returns the prepend element for the input.

	 * @return string the element

	 */

	protected function getPrepend()

	{

		if ($this->hasAddOn())

		{

			$htmlOptions = $this->prependOptions;



			if (isset($htmlOptions['class']))

				$htmlOptions['class'] .= ' add-on';

			else

				$htmlOptions['class'] = 'add-on';



			ob_start();

			echo '<div class="'.$this->getAddonCssClass().'">';

			if (isset($this->prependText))

				echo CHtml::tag('span', $htmlOptions, $this->prependText);



			return ob_get_clean();

		}

		else

			return '';

	}



	/**

	 * Returns the append element for the input.

	 * @return string the element

	 */

	protected function getAppend()

	{

		if ($this->hasAddOn())

		{

			$htmlOptions = $this->appendOptions;



			if (isset($htmlOptions['class']))

				$htmlOptions['class'] .= ' add-on';

			else

				$htmlOptions['class'] = 'add-on';



			ob_start();

			if (isset($this->appendText))

				echo CHtml::tag('span', $htmlOptions, $this->appendText);



			echo '</div>';

			return ob_get_clean();

		}

		else

			return '';

	}

	

	/**

	 * Returns the id that should be used for the specified attribute

	 * @param string $attribute the attribute

	 * @return string the id 

	 */

	protected function getAttributeId($attribute) 

	{

		return isset($this->htmlOptions['id'])

				? $this->htmlOptions['id']

				: CHtml::getIdByName(CHtml::resolveName($this->model, $attribute));

	}



	/**

	 * Returns the error text for the input.

	 * @return string the error text

	 */

	protected function getError()

	{

		return $this->form->error($this->model, $this->attribute, $this->errorOptions);

	}



	/**

	 * Returns the hint text for the input.

	 * @return string the hint text

	 */

	protected function getHint()

	{

		if (isset($this->hintText))

		{

			$htmlOptions = $this->hintOptions;



			if (isset($htmlOptions['class']))

				$htmlOptions['class'] .= ' help-block';

			else

				$htmlOptions['class'] = 'help-block';



			return CHtml::tag('p', $htmlOptions, $this->hintText);

		}

		else

			return '';

	}



	/**

	 * Returns the container CSS class for the input.

	 * @return string the CSS class

	 */

	protected function getContainerCssClass()

	{

		$attribute = $this->attribute;

		return $this->model->hasErrors(CHtml::resolveName($this->model, $attribute)) ? CHtml::$errorCss : '';

	}



	/**

	 * Returns the input container CSS classes.

	 * @return string the CSS class

	 */

	protected function getAddonCssClass()

	{

		$classes = array();

		if (isset($this->prependText))

			$classes[] = 'input-prepend';

		if (isset($this->appendText))

			$classes[] = 'input-append';



		return implode(' ', $classes);

	}



	/**

	 * Returns whether the input has an add-on (prepend and/or append).

	 * @return boolean the result

	 */

	protected function hasAddOn()

	{

		return isset($this->prependText) || isset($this->appendText);

	}



	/**

	 * Renders a checkbox.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function checkBox();



	/**

	 * Renders a list of checkboxes.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function checkBoxList();



	/**

	 * Renders a list of inline checkboxes.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function checkBoxListInline();



	/**

	 * Renders a drop down list (select).

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function dropDownList();



	/**

	 * Renders a file field.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function fileField();



	/**

	 * Renders a password field.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function passwordField();



	/**

	 * Renders a radio button.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function radioButton();



	/**

	 * Renders a list of radio buttons.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function radioButtonList();



	/**

	 * Renders a list of inline radio buttons.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function radioButtonListInline();



	/**

	 * Renders a textarea.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function textArea();



	/**

	 * Renders a text field.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function textField();



	/**

	 * Renders a CAPTCHA.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function captcha();



	/**

	 * Renders an uneditable field.

	 * @return string the rendered content

	 * @abstract

	 */

	abstract protected function uneditableField();

}