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| Rev | Author | Line No. | Line |
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| 27 | PointedEar | 1 | <?php |
| 2 | |||
| 3 | require_once 'Application.php'; |
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| 4 | require_once 'AbstractModel.php'; |
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| 5 | |||
| 6 | /** |
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| 7 | * A general view handled by a controller according to the MVC pattern |
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| 8 | * |
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| 9 | * @author tlahn |
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| 10 | */ |
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| 11 | class View |
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| 12 | { |
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| 13 | /** |
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| 14 | * Default template resource path |
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| 15 | * |
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| 16 | * @var string |
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| 17 | */ |
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| 18 | protected $_template = ''; |
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| 19 | |||
| 20 | /** |
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| 21 | * Content that can be inserted in the template |
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| 22 | * |
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| 23 | * @var string |
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| 24 | */ |
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| 25 | protected $_content = ''; |
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| 26 | |||
| 27 | /** |
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| 28 | * Template variables. The variable name serves as item key, the item's value |
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| 29 | * is the variable value. |
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| 30 | * |
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| 31 | * @var array |
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| 32 | */ |
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| 33 | protected $_template_vars = array(); |
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| 34 | |||
| 35 | /** |
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| 36 | * Creates a new view |
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| 37 | * |
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| 38 | * @param string $template |
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| 39 | * Template resource path |
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| 40 | */ |
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| 41 | public function __construct($template) |
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| 42 | { |
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| 43 | $this->_template = $template; |
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| 44 | } |
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| 45 | |||
| 46 | /** |
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| 47 | * Magic setter method used for defining template variables |
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| 48 | * |
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| 49 | * @param string $name |
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| 50 | * Variable name |
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| 51 | * @param mixed $value |
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| 52 | * Variable value |
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| 53 | */ |
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| 54 | public function __set($name, $value) |
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| 55 | { |
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| 56 | $this->_template_vars[$name] = $value; |
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| 57 | } |
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| 58 | |||
| 59 | /** |
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| 60 | * Magic getter method used for retrieving values of template variables |
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| 61 | * |
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| 62 | * @param string $name |
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| 63 | * Variable name |
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| 64 | */ |
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| 65 | public function __get($name) |
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| 66 | { |
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| 67 | return $this->_template_vars[$name]; |
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| 68 | } |
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| 69 | |||
| 70 | /** |
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| 71 | * Returns <var>$v</var> with occurences of '&' (ampersand), '"' (double quote), |
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| 72 | * "'" (single quote), '<' (less than), and '>' (greater than) replaced by their |
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| 73 | * HTML character entity references, if any, or their numeric HTML character |
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| 74 | * reference (as required primarily in HTML for attribute values and element |
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| 75 | * content). |
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| 76 | * |
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| 77 | * @param mixed $value |
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| 78 | */ |
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| 79 | public function escape($value) |
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| 80 | { |
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| 81 | if (is_array($value)) |
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| 82 | { |
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| 83 | return array_map(array('self', 'escape'), $value); |
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| 84 | } |
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| 85 | else if (is_object($value)) |
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| 86 | { |
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| 87 | if ($value instanceof AbstractModel) |
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| 88 | { |
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| 89 | foreach ($value->getPropertyVars() as $varName) |
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| 90 | { |
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| 91 | $value->$varName = self::escape($value->$varName); |
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| 92 | } |
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| 93 | } |
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| 94 | |||
| 95 | return $value; |
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| 96 | } |
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| 97 | else |
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| 98 | { |
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| 99 | if (is_string($value)) |
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| 100 | { |
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| 101 | $encoding = mb_detect_encoding($value); |
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| 102 | if ($encoding === 'ASCII') |
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| 103 | { |
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| 104 | $encoding = 'ISO-8859-1'; |
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| 105 | } |
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| 106 | return htmlspecialchars($value, ENT_QUOTES, $encoding); |
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| 107 | } |
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| 108 | |||
| 109 | return $value; |
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| 110 | } |
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| 111 | } |
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| 112 | |||
| 113 | /** |
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| 114 | * Assigns a value to a template variable |
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| 115 | * |
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| 116 | * @param string $name |
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| 117 | * Variable name |
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| 118 | * @param mixed $value |
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| 119 | * Variable value |
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| 120 | * @param bool $escape |
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| 121 | * If <code>true</code>, replace all potentially conflicting characters |
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| 122 | * in <var>$value</var> with their HTML entity references. The default is |
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| 123 | * <code>false</code>. |
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| 124 | * @return mixed The assigned value (after possible HTML encoding) |
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| 125 | * @see View::escape() |
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| 126 | */ |
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| 127 | public function assign($name, $value, $escape = false) |
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| 128 | { |
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| 129 | if ($escape) |
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| 130 | { |
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| 131 | $value = $this->escape($value); |
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| 132 | } |
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| 133 | |||
| 134 | $this->$name = $value; |
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| 135 | return $value; |
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| 136 | } |
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| 137 | |||
| 138 | /** |
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| 139 | * Renders the view by including a template |
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| 140 | * |
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| 141 | * @param string $template |
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| 142 | * Optional alternative template resource path. |
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| 143 | * If not provided, the default template ($template property) will be used. |
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| 144 | * @throws Exception if no template has been defined before |
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| 145 | */ |
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| 146 | public function render($template = null, $content = null) |
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| 147 | { |
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| 148 | if (!is_null($content)) |
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| 149 | { |
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| 150 | ob_start(); |
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| 151 | require_once $content; |
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| 152 | $this->_content = ob_get_contents(); |
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| 153 | ob_end_clean(); |
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| 154 | } |
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| 155 | |||
| 156 | if (!is_null($template)) |
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| 157 | { |
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| 158 | require $template; |
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| 159 | } |
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| 160 | elseif ($this->_template) |
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| 161 | { |
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| 162 | require $this->_template; |
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| 163 | } |
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| 164 | else |
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| 165 | { |
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| 166 | throw new Exception('No template defined'); |
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| 167 | } |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * Returns the content for insertion into the template |
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| 172 | */ |
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| 173 | public function getContent() |
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| 174 | { |
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| 175 | return $this->_content; |
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| 176 | } |
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| 177 | |||
| 178 | /** |
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| 179 | * @param string[optional] $controller |
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| 180 | * @param string[optional] $action |
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| 181 | * @param int[optional] $id |
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| 182 | * @see Application::getURL() |
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| 183 | */ |
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| 184 | public function getURL($controller = null, $action = null, $id = null) |
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| 185 | { |
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| 186 | return Application::getInstance()->getURL($controller, $action, $id); |
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| 187 | } |
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| 188 | } |
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| 189 | |||
| 190 | ?> |