|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Yiisoft\Widget; |
|
6
|
|
|
|
|
7
|
|
|
use RuntimeException; |
|
8
|
|
|
use Yiisoft\Definitions\ArrayDefinition; |
|
9
|
|
|
use Yiisoft\Definitions\Exception\CircularReferenceException; |
|
10
|
|
|
use Yiisoft\Definitions\Exception\InvalidConfigException; |
|
11
|
|
|
use Yiisoft\Definitions\Exception\NotInstantiableException; |
|
12
|
|
|
use Yiisoft\Definitions\Helpers\ArrayDefinitionHelper; |
|
13
|
|
|
use Yiisoft\Factory\NotFoundException; |
|
14
|
|
|
use Yiisoft\Html\NoEncodeStringableInterface; |
|
15
|
|
|
|
|
16
|
|
|
use function array_pop; |
|
17
|
|
|
use function sprintf; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* Widget generates a string content based on some logic and input data. |
|
21
|
|
|
* These are typically used in templates to conceal complex HTML rendering logic. |
|
22
|
|
|
* |
|
23
|
|
|
* This is the base class that is meant to be inherited when implementing your own widgets. |
|
24
|
|
|
*/ |
|
25
|
|
|
abstract class Widget implements NoEncodeStringableInterface |
|
26
|
|
|
{ |
|
27
|
|
|
/** |
|
28
|
|
|
* The widgets that are currently opened and not yet closed. |
|
29
|
|
|
* This property is maintained by {@see begin()} and {@see end()} methods. |
|
30
|
|
|
* |
|
31
|
|
|
* @var static[] |
|
32
|
|
|
*/ |
|
33
|
|
|
private static array $stack = []; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* Used to open a wrapping widget (the one with begin/end). |
|
37
|
|
|
* |
|
38
|
|
|
* When implementing this method, don't forget to call `parent::begin()`. |
|
39
|
|
|
* |
|
40
|
|
|
* @return string|null Opening part of widget markup. |
|
41
|
|
|
*/ |
|
42
|
4 |
|
public function begin(): ?string |
|
43
|
|
|
{ |
|
44
|
4 |
|
self::$stack[] = $this; |
|
45
|
4 |
|
return null; |
|
46
|
|
|
} |
|
47
|
|
|
|
|
48
|
|
|
/** |
|
49
|
|
|
* Checks that the widget was opened with {@see begin()}. If so, runs it and returns content generated. |
|
50
|
|
|
* |
|
51
|
|
|
* @throws RuntimeException |
|
52
|
|
|
*/ |
|
53
|
7 |
|
final public static function end(): string |
|
54
|
|
|
{ |
|
55
|
7 |
|
if (self::$stack === []) { |
|
56
|
3 |
|
throw new RuntimeException(sprintf( |
|
57
|
3 |
|
'Unexpected "%s::end()" call. A matching "%s::begin()" is not found.', |
|
58
|
3 |
|
static::class, |
|
59
|
3 |
|
static::class, |
|
60
|
3 |
|
)); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
4 |
|
$widget = array_pop(self::$stack); |
|
64
|
4 |
|
$widgetClass = $widget::class; |
|
65
|
|
|
|
|
66
|
4 |
|
if ($widgetClass !== static::class) { |
|
67
|
1 |
|
throw new RuntimeException(sprintf( |
|
68
|
1 |
|
'Expecting "%s::end()" call, found "%s::end()".', |
|
69
|
1 |
|
$widgetClass, |
|
70
|
1 |
|
static::class, |
|
71
|
1 |
|
)); |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
3 |
|
return $widget->render(); |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
|
|
/** |
|
78
|
|
|
* Creates a widget instance. |
|
79
|
|
|
* |
|
80
|
|
|
* @param array $constructorArguments The constructor arguments. |
|
81
|
|
|
* @param array $config The configuration for creating a widget. For a description of the configuration syntax, see |
|
82
|
|
|
* array definitions documentation in the Yii Definitions by link |
|
83
|
|
|
* {@link https://github.com/yiisoft/definitions#arraydefinition). |
|
84
|
|
|
* |
|
85
|
|
|
* @throws InvalidConfigException |
|
86
|
|
|
* @throws CircularReferenceException |
|
87
|
|
|
* @throws NotInstantiableException |
|
88
|
|
|
* @throws NotFoundException |
|
89
|
|
|
* |
|
90
|
|
|
* @return static The widget instance. |
|
91
|
|
|
*/ |
|
92
|
17 |
|
final public static function widget(array $constructorArguments = [], array $config = []): static |
|
93
|
|
|
{ |
|
94
|
17 |
|
$config = ArrayDefinitionHelper::merge( |
|
95
|
17 |
|
static::getDefaultConfig(), |
|
96
|
17 |
|
$config, |
|
97
|
17 |
|
empty($constructorArguments) ? [] : [ArrayDefinition::CONSTRUCTOR => $constructorArguments], |
|
98
|
17 |
|
); |
|
99
|
|
|
|
|
100
|
16 |
|
$config[ArrayDefinition::CLASS_NAME] = static::class; |
|
101
|
|
|
|
|
102
|
16 |
|
return WidgetFactory::createWidget($config); |
|
103
|
|
|
} |
|
104
|
|
|
|
|
105
|
17 |
|
protected static function getDefaultConfig(): array |
|
106
|
|
|
{ |
|
107
|
17 |
|
return []; |
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
/** |
|
111
|
|
|
* Allows not to call `->render()` explicitly: |
|
112
|
|
|
* |
|
113
|
|
|
* ```php |
|
114
|
|
|
* <?= MyWidget::widget(); ?> |
|
115
|
|
|
* ``` |
|
116
|
|
|
*/ |
|
117
|
1 |
|
final public function __toString(): string |
|
118
|
|
|
{ |
|
119
|
1 |
|
return $this->render(); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* Renders widget content. |
|
124
|
|
|
* |
|
125
|
|
|
* This method must be overridden when implementing concrete widget. |
|
126
|
|
|
* |
|
127
|
|
|
* @return string The result of widget execution to be outputted. |
|
128
|
|
|
*/ |
|
129
|
|
|
abstract public function render(): string; |
|
130
|
|
|
} |
|
131
|
|
|
|
yiisoft /
widget
