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UserAdminV2
Commit d8eba638 by Taylor Otwell
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moved asset_container into asset.php

parent 83ace2de
Showing with 263 additions and 264 deletions
system/asset.php
<?php namespace System;
use System\HTML;
class Asset {
/**
......@@ -33,4 +35,264 @@ class Asset {
return call_user_func_array(array(static::container(), $method), $parameters);
}
}
class Asset_Container {
/**
* The asset container name.
*
* @var string
*/
public $name;
/**
* All of the registered assets.
*
* @var array
*/
public $assets = array();
/**
* Create a new asset container instance.
*
* @param string $name
* @return void
*/
public function __construct($name)
{
$this->name = $name;
}
/**
* Add an asset to the container.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function add($name, $source, $dependencies = array(), $attributes = array())
{
return call_user_func(array($this, (\System\File::extension($source) == 'css') ? 'style' : 'script'), $name, $source, $dependencies, $attributes);
}
/**
* Add CSS to the registered assets.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function style($name, $source, $dependencies = array(), $attributes = array())
{
if ( ! array_key_exists('media', $attributes))
{
$attributes['media'] = 'all';
}
$this->register('style', $name, $source, $dependencies, $attributes);
}
/**
* Add JavaScript to the registered assets.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function script($name, $source, $dependencies = array(), $attributes = array())
{
$this->register('script', $name, $source, $dependencies, $attributes);
}
/**
* Add an asset to the registered assets.
*
* @param string $type
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
private function register($type, $name, $source, $dependencies, $attributes)
{
$dependencies = (array) $dependencies;
$this->assets[$type][$name] = compact('source', 'dependencies', 'attributes');
}
/**
* Get all of the registered CSS assets.
*
* @return string
*/
public function styles()
{
return $this->get_group('style');
}
/**
* Get all of the registered JavaScript assets.
*
* @return string
*/
public function scripts()
{
return $this->get_group('script');
}
/**
* Get all of the registered assets for a given group.
*
* @param string $group
* @return string
*/
private function get_group($group)
{
if ( ! isset($this->assets[$group]) or count($this->assets[$group]) == 0) return '';
$assets = '';
foreach ($this->arrange($this->assets[$group]) as $name => $data)
{
$assets .= $this->get_asset($group, $name);
}
return $assets;
}
/**
* Get a registered CSS asset.
*
* @param string $name
* @return string
*/
public function get_style($name)
{
return $this->get_asset('style', $name);
}
/**
* Get a registered JavaScript asset.
*
* @param string $name
* @return string
*/
public function get_script($name)
{
return $this->get_asset('script', $name);
}
/**
* Get a registered asset.
*
* @param string $group
* @param string $name
* @return string
*/
private function get_asset($group, $name)
{
if ( ! isset($this->assets[$group][$name]))
{
return '';
}
$asset = $this->assets[$group][$name];
return HTML::$group($asset['source'], $asset['attributes']);
}
/**
* Sort and retrieve assets based on their dependencies
*
* @param array $assets
* @return array
*/
private function arrange($assets)
{
list($original, $sorted) = array($assets, array());
while (count($assets) > 0)
{
foreach ($assets as $asset => $value)
{
$this->evaluate_asset($asset, $value, $original, $sorted, $assets);
}
}
return $sorted;
}
/**
* Evaluate an asset and its dependencies.
*
* @param string $asset
* @param string $value
* @param array $original
* @param array $sorted
* @param array $assets
* @return void
*/
private function evaluate_asset($asset, $value, $original, &$sorted, &$assets)
{
// If the asset has no more dependencies, we can add it to the sorted list
// and remove it from the array of assets. Otherwise, we will not verify
// the asset's dependencies and determine if they have already been sorted.
if (count($assets[$asset]['dependencies']) == 0)
{
$sorted[$asset] = $value;
unset($assets[$asset]);
}
else
{
foreach ($assets[$asset]['dependencies'] as $key => $dependency)
{
if ( ! $this->dependency_is_valid($asset, $dependency, $original, $assets))
{
unset($assets[$asset]['dependencies'][$key]);
continue;
}
// If the dependency has not yet been added to the sorted list, we can not
// remove it from this asset's array of dependencies. We'll try again on
// the next trip through the loop.
if ( ! isset($sorted[$dependency])) continue;
unset($assets[$asset]['dependencies'][$key]);
}
}
}
/**
* Check that a dependency is valid.
*
* @param string $asset
* @param string $dependency
* @param array $original
* @param array $assets
* @return bool
*/
private function dependency_is_valid($asset, $dependency, $original, $assets)
{
if ( ! isset($original[$dependency]))
{
return false;
}
elseif ($dependency === $asset)
{
throw new \Exception("Asset [$asset] is dependent on itself.");
}
elseif (isset($assets[$dependency]) and in_array($asset, $assets[$dependency]['dependencies']))
{
throw new \Exception("Assets [$asset] and [$dependency] have a circular dependency.");
}
}
}
\ No newline at end of file
system/asset_container.php deleted 100644 → 0
<?php namespace System;
use System\HTML;
class Asset_Container {
/**
* The asset container name.
*
* @var string
*/
public $name;
/**
* All of the registered assets.
*
* @var array
*/
public $assets = array();
/**
* Create a new asset container instance.
*
* @param string $name
* @return void
*/
public function __construct($name)
{
$this->name = $name;
}
/**
* Add an asset to the container.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function add($name, $source, $dependencies = array(), $attributes = array())
{
return call_user_func(array($this, (\System\File::extension($source) == 'css') ? 'style' : 'script'), $name, $source, $dependencies, $attributes);
}
/**
* Add CSS to the registered assets.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function style($name, $source, $dependencies = array(), $attributes = array())
{
if ( ! array_key_exists('media', $attributes))
{
$attributes['media'] = 'all';
}
$this->register('style', $name, $source, $dependencies, $attributes);
}
/**
* Add JavaScript to the registered assets.
*
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
public function script($name, $source, $dependencies = array(), $attributes = array())
{
$this->register('script', $name, $source, $dependencies, $attributes);
}
/**
* Add an asset to the registered assets.
*
* @param string $type
* @param string $name
* @param string $source
* @param array $dependencies
* @param array $attributes
* @return void
*/
private function register($type, $name, $source, $dependencies, $attributes)
{
$dependencies = (array) $dependencies;
$this->assets[$type][$name] = compact('source', 'dependencies', 'attributes');
}
/**
* Get all of the registered CSS assets.
*
* @return string
*/
public function styles()
{
return $this->get_group('style');
}
/**
* Get all of the registered JavaScript assets.
*
* @return string
*/
public function scripts()
{
return $this->get_group('script');
}
/**
* Get all of the registered assets for a given group.
*
* @param string $group
* @return string
*/
private function get_group($group)
{
if ( ! isset($this->assets[$group]) or count($this->assets[$group]) == 0) return '';
$assets = '';
foreach ($this->arrange($this->assets[$group]) as $name => $data)
{
$assets .= $this->get_asset($group, $name);
}
return $assets;
}
/**
* Get a registered CSS asset.
*
* @param string $name
* @return string
*/
public function get_style($name)
{
return $this->get_asset('style', $name);
}
/**
* Get a registered JavaScript asset.
*
* @param string $name
* @return string
*/
public function get_script($name)
{
return $this->get_asset('script', $name);
}
/**
* Get a registered asset.
*
* @param string $group
* @param string $name
* @return string
*/
private function get_asset($group, $name)
{
if ( ! isset($this->assets[$group][$name]))
{
return '';
}
$asset = $this->assets[$group][$name];
return HTML::$group($asset['source'], $asset['attributes']);
}
/**
* Sort and retrieve assets based on their dependencies
*
* @param array $assets
* @return array
*/
private function arrange($assets)
{
list($original, $sorted) = array($assets, array());
while (count($assets) > 0)
{
foreach ($assets as $asset => $value)
{
$this->evaluate_asset($asset, $value, $original, $sorted, $assets);
}
}
return $sorted;
}
/**
* Evaluate an asset and its dependencies.
*
* @param string $asset
* @param string $value
* @param array $original
* @param array $sorted
* @param array $assets
* @return void
*/
private function evaluate_asset($asset, $value, $original, &$sorted, &$assets)
{
// If the asset has no more dependencies, we can add it to the sorted list
// and remove it from the array of assets. Otherwise, we will not verify
// the asset's dependencies and determine if they have already been sorted.
if (count($assets[$asset]['dependencies']) == 0)
{
$sorted[$asset] = $value;
unset($assets[$asset]);
}
else
{
foreach ($assets[$asset]['dependencies'] as $key => $dependency)
{
if ( ! $this->dependency_is_valid($asset, $dependency, $original, $assets))
{
unset($assets[$asset]['dependencies'][$key]);
continue;
}
// If the dependency has not yet been added to the sorted list, we can not
// remove it from this asset's array of dependencies. We'll try again on
// the next trip through the loop.
if ( ! isset($sorted[$dependency])) continue;
unset($assets[$asset]['dependencies'][$key]);
}
}
}
/**
* Check that a dependency is valid.
*
* @param string $asset
* @param string $dependency
* @param array $original
* @param array $assets
* @return bool
*/
private function dependency_is_valid($asset, $dependency, $original, $assets)
{
if ( ! isset($original[$dependency]))
{
return false;
}
elseif ($dependency === $asset)
{
throw new \Exception("Asset [$asset] is dependent on itself.");
}
elseif (isset($assets[$dependency]) and in_array($asset, $assets[$dependency]['dependencies']))
{
throw new \Exception("Assets [$asset] and [$dependency] have a circular dependency.");
}
}
}
\ No newline at end of file
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