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refactored Carousel.

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This commit is contained in:
Qiang Xue
2013-05-22 19:52:31 -04:00
parent 1d90ee390f
commit 210faf787e
1 changed files with 52 additions and 49 deletions
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101
framework/yii/bootstrap/Carousel.php
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@@ -7,8 +7,7 @@
namespace yii\bootstrap;
use Yii;
use yii\base\Model;
use yii\base\InvalidConfigException;
use yii\helpers\base\ArrayHelper;
use yii\helpers\Html;
@@ -20,10 +19,13 @@ use yii\helpers\Html;
* ```php
* echo Carousel::widget(array(
* 'items' => array(
* // the item contains only the image
* '<img src="http://twitter.github.io/bootstrap/assets/img/bootstrap-mdo-sfmoma-01.jpg"/>',
* // equivalent to the above
* array(
* 'content' => '<img src="http://twitter.github.io/bootstrap/assets/img/bootstrap-mdo-sfmoma-02.jpg"/>',
* ),
* // the item contains both the image and the caption
* array(
* 'content' => '<img src="http://twitter.github.io/bootstrap/assets/img/bootstrap-mdo-sfmoma-03.jpg"/>',
* 'caption' => '<h4>This is title</h4><p>This is the caption text</p>',
@@ -40,20 +42,22 @@ use yii\helpers\Html;
class Carousel extends Widget
{
/**
* @var array indicates what labels should be displayed on next and previous carousel controls. If [[controls]] is
* set to `false` the controls will not be displayed.
* @var array|boolean the labels for the previous and the next control buttons.
* If false, it means the previous and the next control buttons should not be displayed.
*/
public $controls = array('&lsaquo;', '&rsaquo;');
/**
* @var array list of images to appear in the carousel. If this property is empty,
* the widget will not render anything. Each array element represents a single image in the carousel
* with the following structure:
* @var array list of slides in the carousel. Each array element represents a single
* slide with the following structure:
*
* ```php
* array(
* 'content' => 'html, for example image', // required
* 'caption'=> ['html attributes of the image'], // optional
* 'options' => ['html attributes of the item'], // optional
* // required, slide content (HTML), such as an image tag
* 'content' => '<img src="http://twitter.github.io/bootstrap/assets/img/bootstrap-mdo-sfmoma-01.jpg"/>',
* // optional, the caption (HTML) of the slide
* 'caption'=> '<h4>This is title</h4><p>This is the caption text</p>',
* // optional the HTML attributes of the slide container
* 'options' => array(),
* )
* ```
*/
@@ -74,90 +78,84 @@ class Carousel extends Widget
*/
public function run()
{
if (empty($this->items)) {
return;
}
echo Html::beginTag('div', $this->options) . "\n";
echo $this->renderIndicators() . "\n";
echo $this->renderItems() . "\n";
echo $this->renderPreviousAndNext() . "\n";
echo $this->renderControls() . "\n";
echo Html::endTag('div') . "\n";
$this->registerPlugin('carousel');
}
/**
* Renders carousel indicators
* Renders carousel indicators.
* @return string the rendering result
*/
public function renderIndicators()
{
ob_start();
echo Html::beginTag('ol', array('class' => 'carousel-indicators')) . "\n";
$indicators = array();
for ($i = 0, $count = count($this->items); $i < $count; $i++) {
$options = array('data-target' => '#' . $this->options['id'], 'data-slide-to' => $i);
if ($i === 0) {
$this->addCssClass($options, 'active');
}
echo Html::tag('li', '', $options) . "\n";
$indicators[] = Html::tag('li', '', $options);
}
echo Html::endTag('ol') . "\n";
return ob_get_clean();
return Html::tag('ol', implode("\n", $indicators), array('class' => 'carousel-indicators'));
}
/**
* Renders carousel items as specified on [[items]]
* Renders carousel items as specified on [[items]].
* @return string the rendering result
*/
public function renderItems()
{
ob_start();
echo Html::beginTag('div', array('class' => 'carousel-inner')) . "\n";
$items = array();
for ($i = 0, $count = count($this->items); $i < $count; $i++) {
$this->renderItem($this->items[$i], $i);
$items[] = $this->renderItem($this->items[$i], $i);
}
echo Html::endTag('div') . "\n";
return ob_get_clean();
return Html::tag('div', implode("\n", $items), array('class' => 'carousel-inner'));
}
/**
* Renders a single carousel item
* @param mixed $item a single item from [[items]]
* @param string|array $item a single item from [[items]]
* @param integer $index the item index as the first item should be set to `active`
* @return string the rendering result
* @throws InvalidConfigException if the item is invalid
*/
public function renderItem($item, $index)
{
if (is_string($item)) {
$itemContent = $item;
$itemCaption = null;
$itemOptions = array();
$content = $item;
$caption = null;
$options = array();
} elseif (isset($item['content'])) {
$content = $item['content'];
$caption = ArrayHelper::getValue($item, 'caption');
if ($caption !== null) {
$caption = Html::tag('div', $caption, array('class' => 'carousel-caption'));
}
$options = ArrayHelper::getValue($item, 'options', array());
} else {
$itemContent = $item['content']; // if not string, must be array, force required key
$itemCaption = ArrayHelper::getValue($item, 'caption');
$itemOptions = ArrayHelper::getValue($item, 'options', array());
throw new InvalidConfigException('The "content" option is required.');
}
$this->addCssClass($itemOptions, 'item');
$this->addCssClass($options, 'item');
if ($index === 0) {
$this->addCssClass($itemOptions, 'active');
$this->addCssClass($options, 'active');
}
echo Html::beginTag('div', $itemOptions) . "\n";
echo $itemContent . "\n";
if ($itemCaption !== null) {
echo Html::tag('div', $itemCaption, array('class' => 'carousel-caption')) . "\n";
}
echo Html::endTag('div') . "\n";
return Html::tag('div', $content . "\n" . $caption, $options);
}
/**
* Renders previous and next button if [[displayPreviousAndNext]] is set to `true`
* Renders previous and next control buttons.
* @throws InvalidConfigException if [[controls]] is invalid.
*/
public function renderPreviousAndNext()
public function renderControls()
{
if ($this->controls === false || !(isset($this->controls[0], $this->controls[1]))) {
return;
}
echo Html::a($this->controls[0], '#' . $this->options['id'], array(
if (isset($this->controls[0], $this->controls[1])) {
return Html::a($this->controls[0], '#' . $this->options['id'], array(
'class' => 'left carousel-control',
'data-slide' => 'prev',
)) . "\n"
@@ -165,5 +163,10 @@ class Carousel extends Widget
'class' => 'right carousel-control',
'data-slide' => 'next',
));
} elseif ($this->controls === false) {
return '';
} else {
throw new InvalidConfigException('The "controls" property must be either false or an array of two elements.');
}
}
}