1<?php
2
3/*
4 * This file is part of the Assetic package, an OpenSky project.
5 *
6 * (c) 2010-2014 OpenSky Project Inc
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12namespace Assetic\Asset;
13
14use Assetic\AssetManager;
15use Assetic\Filter\FilterInterface;
16
17/**
18 * A reference to an asset in the asset manager.
19 *
20 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
21 */
22class AssetReference implements AssetInterface
23{
24    private $am;
25    private $name;
26    private $filters = array();
27    private $clone = false;
28    private $asset;
29
30    public function __construct(AssetManager $am, $name)
31    {
32        $this->am = $am;
33        $this->name = $name;
34    }
35
36    public function __clone()
37    {
38        $this->clone = true;
39
40        if ($this->asset) {
41            $this->asset = clone $this->asset;
42        }
43    }
44
45    public function ensureFilter(FilterInterface $filter)
46    {
47        $this->filters[] = $filter;
48    }
49
50    public function getFilters()
51    {
52        $this->flushFilters();
53
54        return $this->callAsset(__FUNCTION__);
55    }
56
57    public function clearFilters()
58    {
59        $this->filters = array();
60        $this->callAsset(__FUNCTION__);
61    }
62
63    public function load(FilterInterface $additionalFilter = null)
64    {
65        $this->flushFilters();
66
67        return $this->callAsset(__FUNCTION__, array($additionalFilter));
68    }
69
70    public function dump(FilterInterface $additionalFilter = null)
71    {
72        $this->flushFilters();
73
74        return $this->callAsset(__FUNCTION__, array($additionalFilter));
75    }
76
77    public function getContent()
78    {
79        return $this->callAsset(__FUNCTION__);
80    }
81
82    public function setContent($content)
83    {
84        $this->callAsset(__FUNCTION__, array($content));
85    }
86
87    public function getSourceRoot()
88    {
89        return $this->callAsset(__FUNCTION__);
90    }
91
92    public function getSourcePath()
93    {
94        return $this->callAsset(__FUNCTION__);
95    }
96
97    public function getSourceDirectory()
98    {
99        return $this->callAsset(__FUNCTION__);
100    }
101
102    public function getTargetPath()
103    {
104        return $this->callAsset(__FUNCTION__);
105    }
106
107    public function setTargetPath($targetPath)
108    {
109        $this->callAsset(__FUNCTION__, array($targetPath));
110    }
111
112    public function getLastModified()
113    {
114        return $this->callAsset(__FUNCTION__);
115    }
116
117    public function getVars()
118    {
119        return $this->callAsset(__FUNCTION__);
120    }
121
122    public function getValues()
123    {
124        return $this->callAsset(__FUNCTION__);
125    }
126
127    public function setValues(array $values)
128    {
129        $this->callAsset(__FUNCTION__, array($values));
130    }
131
132    // private
133
134    private function callAsset($method, $arguments = array())
135    {
136        $asset = $this->resolve();
137
138        return call_user_func_array(array($asset, $method), $arguments);
139    }
140
141    private function flushFilters()
142    {
143        $asset = $this->resolve();
144
145        while ($filter = array_shift($this->filters)) {
146            $asset->ensureFilter($filter);
147        }
148    }
149
150    private function resolve()
151    {
152        if ($this->asset) {
153            return $this->asset;
154        }
155
156        $asset = $this->am->get($this->name);
157
158        if ($this->clone) {
159            $asset = $this->asset = clone $asset;
160        }
161
162        return $asset;
163    }
164}
165