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<?php

class acf_field_radio extends acf_field
{
	/*
	*  __construct
	*
	*  Set name / label needed for actions / filters
	*
	*  @since	3.6
	*  @date	23/01/13
	*/
	
	function __construct()
	{
		// vars
		$this->name = 'radio';
		$this->label = __("Radio Button",'acf');
		$this->category = __("Choice",'acf');
		$this->defaults = array(
			'layout'			=>	'vertical',
			'choices'			=>	array(),
			'default_value'		=>	'',
			'other_choice'		=>	0,
			'save_other_choice'	=>	0,
		);
		
		
		// do not delete!
    	parent::__construct();
  
	}
	
		
	/*
	*  create_field()
	*
	*  Create the HTML interface for your field
	*
	*  @param	$field - an array holding all the field's data
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*/
	
	function create_field( $field )
	{
		// vars
		$i = 0;
		$e = '<ul class="acf-radio-list ' . esc_attr($field['class']) . ' ' . esc_attr($field['layout']) . '">';

// add choices
		if( is_array($field['choices']) )
		{
			foreach( $field['choices'] as $key => $value )
			{
				// vars
				$i++;
				$atts = '';
				
				
				// if there is no value and this is the first of the choices, select this on by default
				if( $field['value'] === false )
				{
					if( $i === 1 )
					{
						$atts = 'checked="checked" data-checked="checked"';
					}
				}
				else
				{
					if( strval($key) === strval($field['value']) )
					{
						$atts = 'checked="checked" data-checked="checked"';
					}
				}
				
				
				// HTML
				$e .= '<li><label><input id="' . esc_attr($field['id']) . '-' . esc_attr($key) . '" type="radio" name="' . esc_attr($field['name']) . '" value="' . esc_attr($key) . '" ' . esc_attr( $atts ) . ' />' . $value . '</label></li>';
			}
		}
		
		
		// other choice
		if( $field['other_choice'] )
		{
			// vars
			$atts = '';
			$atts2 = 'name="" value="" style="display:none"';
			
			
			if( !isset($field['choices'][ $field['value'] ]) )
			{
				$atts = 'checked="checked" data-checked="checked"';
				$atts2 = 'name="' . esc_attr($field['name']) . '" value="' . esc_attr($field['value']) . '"' ;
			}
			
			
			$e .= '<li><label><input id="' . esc_attr($field['id']) . '-other" type="radio" name="' . esc_attr($field['name']) . '" value="other" ' . $atts . ' />' . __("Other", 'acf') . '</label> <input type="text" ' . $atts2 . ' /></li>';
		}

$e .= '</ul>';
		
		echo $e;
		
	}
	
	
	/*
	*  create_options()
	*
	*  Create extra options for your field. This is rendered when editing a field.
	*  The value of $field['name'] can be used (like bellow) to save extra data to the $field
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field	- an array holding all the field's data
	*/
	
	function create_options( $field )
	{
		// vars
		$key = $field['name'];
		
		// implode checkboxes so they work in a textarea
		if( is_array($field['choices']) )
		{		
			foreach( $field['choices'] as $k => $v )
			{
				$field['choices'][ $k ] = $k . ' : ' . $v;
			}
			$field['choices'] = implode("\n", $field['choices']);
		}
		
		?>
		<tr class="field_option field_option_<?php echo $this->name; ?>">
			<td class="label">
				<label for=""><?php _e("Choices",'acf'); ?></label>
				<p class="description"><?php _e("Enter your choices one per line",'acf'); ?><br />
				<br />
				<?php _e("Red",'acf'); ?><br />
				<?php _e("Blue",'acf'); ?><br />
				<br />
				<?php _e("red : Red",'acf'); ?><br />
				<?php _e("blue : Blue",'acf'); ?><br />
				</p>
			</td>
			<td>
				<?php
				
				do_action('acf/create_field', array(
					'type'	=>	'textarea',
					'class' => 	'textarea field_option-choices',
					'name'	=>	'fields['.$key.'][choices]',
					'value'	=>	$field['choices'],
				));
				
				?>
				<div class="radio-option-other_choice">
				<?php
				
				do_action('acf/create_field', array(
					'type'		=>	'true_false',
					'name'		=>	'fields['.$key.'][other_choice]',
					'value'		=>	$field['other_choice'],
					'message'	=>	__("Add 'other' choice to allow for custom values", 'acf')
				));
				
				?>
				</div>
				<div class="radio-option-save_other_choice" <?php if( !$field['other_choice'] ): ?>style="display:none"<?php endif; ?>>
				<?php
				
				do_action('acf/create_field', array(
					'type'		=>	'true_false',
					'name'		=>	'fields['.$key.'][save_other_choice]',
					'value'		=>	$field['save_other_choice'],
					'message'	=>	__("Save 'other' values to the field's choices", 'acf')
				));
				
				?>
				</div>
			</td>
		</tr>
		<tr class="field_option field_option_<?php echo $this->name; ?>">
			<td class="label">
				<label><?php _e("Default Value",'acf'); ?></label>
			</td>
			<td>
				<?php
				
				do_action('acf/create_field', array(
					'type'	=>	'text',
					'name'	=>	'fields['.$key.'][default_value]',
					'value'	=>	$field['default_value'],
				));
				
				?>
			</td>
		</tr>
		<tr class="field_option field_option_<?php echo $this->name; ?>">
			<td class="label">
				<label for=""><?php _e("Layout",'acf'); ?></label>
			</td>
			<td>
				<?php
				
				do_action('acf/create_field', array(
					'type'	=>	'radio',
					'name'	=>	'fields['.$key.'][layout]',
					'value'	=>	$field['layout'],
					'layout' => 'horizontal', 
					'choices' => array(
						'vertical' => __("Vertical",'acf'), 
						'horizontal' => __("Horizontal",'acf')
					)
				));
				
				?>
			</td>
		</tr>
		<?php
		
	}
	
	
	/*
	*  update_value()
	*
	*  This filter is appied to the $value before it is updated in the db
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$value - the value which will be saved in the database
	*  @param	$post_id - the $post_id of which the value will be saved
	*  @param	$field - the field array holding all the field options
	*
	*  @return	$value - the modified value
	*/
	
	function update_value( $value, $post_id, $field )
	{
		// validate
		if( $field['save_other_choice'] )
		{
			// value isn't in choices yet
			if( !isset($field['choices'][ $value ]) )
			{
				// update $field
				$field['choices'][ $value ] = $value;
				
				
				// can save
				if( isset($field['field_group']) )
				{
					do_action('acf/update_field', $field, $field['field_group']);
				}
				
			}
		}		
		
		return $value;
	}
	
}

new acf_field_radio();