Class luya\theme\Theme
Inheritance | luya\theme\Theme » yii\base\Theme » yii\base\Component » yii\base\BaseObject |
---|---|
Implements | yii\base\Configurable |
Available since version | 1.0.21 |
Source Code | https://github.com/luyadev/luya/blob/master/core/theme/Theme.php |
Extend the yii2 theme component and build up the $pathMap
depends on given {{\luya\theme\ThemeConfig}} which include parents inheritance.
See also luya\theme\ThemeConfig.
Public Properties
Property | Type | Description | Defined By |
---|---|---|---|
$basePath | string | The root path of this theme. | yii\base\Theme |
$baseUrl | string | The base URL (without ending slash) for this theme. | yii\base\Theme |
$behaviors | yii\base\Behavior[] | List of behaviors attached to this component. | yii\base\Component |
$config | luya\theme\ThemeConfig | luya\theme\Theme | |
$layout | string | luya\theme\Theme | |
$layoutPath | string | luya\theme\Theme | |
$pathMap | array|null | The mapping between view directories and their corresponding themed versions. | yii\base\Theme |
$resourcePath | string | luya\theme\Theme | |
$viewPath | string | luya\theme\Theme |
Protected Properties
Property | Type | Description | Defined By |
---|---|---|---|
$_layout | luya\theme\Theme |
Public Methods
Method | Description | Defined By |
---|---|---|
__call() | Calls the named method which is not a class method. | yii\base\Component |
__clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
__construct() | Theme constructor with a configuration as {{\luya\theme\ThemeConfig}} object. | luya\theme\Theme |
__get() | Returns the value of a component property. | yii\base\Component |
__isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Component |
__set() | Sets the value of a component property. | yii\base\Component |
__unset() | Sets a component property to be null. | yii\base\Component |
applyTo() | Converts a file to a themed file if possible. | yii\base\Theme |
attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\Component |
canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Component |
className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
getBasePath() | yii\base\Theme | |
getBaseUrl() | yii\base\Theme | |
getBehavior() | Returns the named behavior object. | yii\base\Component |
getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
getConfig() | Theme configuration that contains the base theme information. | luya\theme\Theme |
getLayout() | The name of the layout to be applied to this theme views. | luya\theme\Theme |
getLayoutPath() | Path to the directory that contains the theme layouts. | luya\theme\Theme |
getPath() | Converts a relative file path into an absolute one using $basePath. | yii\base\Theme |
getUrl() | Converts a relative URL into an absolute URL using $baseUrl. | yii\base\Theme |
getViewPath() | Path to the directory that contains the theme views. | luya\theme\Theme |
hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component |
hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
init() | Initialize the theme. | luya\theme\Theme |
off() | Detaches an existing event handler from this component. | yii\base\Component |
on() | Attaches an event handler to an event. | yii\base\Component |
setBasePath() | yii\base\Theme | |
setBaseUrl() | yii\base\Theme | |
trigger() | Triggers an event. | yii\base\Component |
Protected Methods
Method | Description | Defined By |
---|---|---|
getAdditionalPathMap() | luya\theme\Theme | |
initPathMap() | Init the path mapping include the parent themes | luya\theme\Theme |
Constants
Constant | Value | Description | Defined By |
---|---|---|---|
LAYOUTS_PATH | 'layouts' | luya\theme\Theme |
Property Details
Method Details
Defined in: yii\base\Component::__call()
Calls the named method which is not a class method.
This method will check if any attached behavior has the named method and will execute it if available.
Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.
public mixed __call ( $name, $params ) | ||
$name | string |
The method name |
$params | array |
Method parameters |
return | mixed |
The method return value |
---|---|---|
throws | yii\base\UnknownMethodException |
when calling unknown method |
public function __call($name, $params)
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $object) {
if ($object->hasMethod($name)) {
return call_user_func_array([$object, $name], $params);
}
}
throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}
Defined in: yii\base\Component::__clone()
This method is called after the object is created by cloning an existing one.
It removes all behaviors because they are attached to the old object.
public void __clone ( ) |
public function __clone()
{
$this->_events = [];
$this->_eventWildcards = [];
$this->_behaviors = null;
}
Theme constructor with a configuration as {{\luya\theme\ThemeConfig}} object.
public void __construct ( luya\theme\ThemeConfig $config ) | ||
$config | luya\theme\ThemeConfig |
Configuration for this theme. |
public function __construct(ThemeConfig $config)
{
$this->_config = $config;
parent::__construct(['basePath' => $config->getBasePath()]);
}
Defined in: yii\base\Component::__get()
Returns the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a getter: return the getter result
- a property of a behavior: return the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $value = $component->property;
.
See also __set().
public mixed __get ( $name ) | ||
$name | string |
The property name |
return | mixed |
The property value or the value of a behavior's property |
---|---|---|
throws | yii\base\UnknownPropertyException |
if the property is not defined |
throws | yii\base\InvalidCallException |
if the property is write-only. |
public function __get($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
// read property, e.g. getName()
return $this->$getter();
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name;
}
}
if (method_exists($this, 'set' . $name)) {
throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__isset()
Checks if a property is set, i.e. defined and not null.
This method will check in the following order and act accordingly:
- a property defined by a setter: return whether the property is set
- a property of a behavior: return whether the property is set
- return
false
for non existing properties
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing isset($component->property)
.
public boolean __isset ( $name ) | ||
$name | string |
The property name or the event name |
return | boolean |
Whether the named property is set |
---|
public function __isset($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter() !== null;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name !== null;
}
}
return false;
}
Defined in: yii\base\Component::__set()
Sets the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value
- an event in the format of "on xyz": attach the handler to the event "xyz"
- a behavior in the format of "as xyz": attach the behavior named as "xyz"
- a property of a behavior: set the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $component->property = $value;
.
See also __get().
public void __set ( $name, $value ) | ||
$name | string |
The property name or the event name |
$value | mixed |
The property value |
throws | yii\base\UnknownPropertyException |
if the property is not defined |
---|---|---|
throws | yii\base\InvalidCallException |
if the property is read-only. |
public function __set($name, $value)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
// set property
$this->$setter($value);
return;
} elseif (strncmp($name, 'on ', 3) === 0) {
// on event: attach event handler
$this->on(trim(substr($name, 3)), $value);
return;
} elseif (strncmp($name, 'as ', 3) === 0) {
// as behavior: attach behavior
$name = trim(substr($name, 3));
$this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = $value;
return;
}
}
if (method_exists($this, 'get' . $name)) {
throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property)
.
public void __unset ( $name ) | ||
$name | string |
The property name |
throws | yii\base\InvalidCallException |
if the property is read only. |
---|
public function __unset($name)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter(null);
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = null;
return;
}
}
throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Theme::applyTo()
Converts a file to a themed file if possible.
If there is no corresponding themed file, the original file will be returned.
public string applyTo ( $path ) | ||
$path | string |
The file to be themed |
return | string |
The themed file, or the original file if the themed version is not available. |
---|---|---|
throws | yii\base\InvalidConfigException |
if $basePath is not set |
public function applyTo($path)
{
$pathMap = $this->pathMap;
if (empty($pathMap)) {
if (($basePath = $this->getBasePath()) === null) {
throw new InvalidConfigException('The "basePath" property must be set.');
}
$pathMap = [Yii::$app->getBasePath() => [$basePath]];
}
$path = FileHelper::normalizePath($path);
foreach ($pathMap as $from => $tos) {
$from = FileHelper::normalizePath(Yii::getAlias($from)) . DIRECTORY_SEPARATOR;
if (strpos($path, $from) === 0) {
$n = strlen($from);
foreach ((array) $tos as $to) {
$to = FileHelper::normalizePath(Yii::getAlias($to)) . DIRECTORY_SEPARATOR;
$file = $to . substr($path, $n);
if (is_file($file)) {
return $file;
}
}
}
}
return $path;
}
Defined in: yii\base\Component::attachBehavior()
Attaches a behavior to this component.
This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.
See also detachBehavior().
public yii\base\Behavior attachBehavior ( $name, $behavior ) | ||
$name | string |
The name of the behavior. |
$behavior | string|array|yii\base\Behavior |
The behavior configuration. This can be one of the following:
|
return | yii\base\Behavior |
The behavior object |
---|
public function attachBehavior($name, $behavior)
{
$this->ensureBehaviors();
return $this->attachBehaviorInternal($name, $behavior);
}
Defined in: yii\base\Component::attachBehaviors()
Attaches a list of behaviors to the component.
Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.
See also attachBehavior().
public void attachBehaviors ( $behaviors ) | ||
$behaviors | array |
List of behaviors to be attached to the component |
public function attachBehaviors($behaviors)
{
$this->ensureBehaviors();
foreach ($behaviors as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
Defined in: yii\base\Component::behaviors()
Returns a list of behaviors that this component should behave as.
Child classes may override this method to specify the behaviors they want to behave as.
The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:
'behaviorName' => [
'class' => 'BehaviorClass',
'property1' => 'value1',
'property2' => 'value2',
]
Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.
Behaviors declared in this method will be attached to the component automatically (on demand).
public array behaviors ( ) | ||
return | array |
The behavior configurations. |
---|
public function behaviors()
{
return [];
}
Defined in: yii\base\Component::canGetProperty()
Returns a value indicating whether a property can be read.
A property can be read if:
- the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a readable property of the given name (when
$checkBehaviors
is true).
See also canSetProperty().
public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be read |
---|
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::canSetProperty()
Returns a value indicating whether a property can be set.
A property can be written if:
- the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a writable property of the given name (when
$checkBehaviors
is true).
See also canGetProperty().
public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be written |
---|
public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
::class
instead.
Defined in: yii\base\BaseObject::className()
Returns the fully qualified name of this class.
public static string className ( ) | ||
return | string |
The fully qualified name of this class. |
---|
public static function className()
{
return get_called_class();
}
Defined in: yii\base\Component::detachBehavior()
Detaches a behavior from the component.
The behavior's yii\base\Behavior::detach() method will be invoked.
public yii\base\Behavior|null detachBehavior ( $name ) | ||
$name | string |
The behavior's name. |
return | yii\base\Behavior|null |
The detached behavior. Null if the behavior does not exist. |
---|
public function detachBehavior($name)
{
$this->ensureBehaviors();
if (isset($this->_behaviors[$name])) {
$behavior = $this->_behaviors[$name];
unset($this->_behaviors[$name]);
$behavior->detach();
return $behavior;
}
return null;
}
Defined in: yii\base\Component::detachBehaviors()
Detaches all behaviors from the component.
public void detachBehaviors ( ) |
public function detachBehaviors()
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $name => $behavior) {
$this->detachBehavior($name);
}
}
Defined in: yii\base\Component::ensureBehaviors()
Makes sure that the behaviors declared in behaviors() are attached to this component.
public void ensureBehaviors ( ) |
public function ensureBehaviors()
{
if ($this->_behaviors === null) {
$this->_behaviors = [];
foreach ($this->behaviors() as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
}
protected array getAdditionalPathMap ( luya\theme\ThemeConfig $themeConfig ) | ||
$themeConfig | luya\theme\ThemeConfig | |
throws | yii\base\InvalidConfigException | |
---|---|---|
throws | luya\Exception |
protected function getAdditionalPathMap(ThemeConfig $themeConfig)
{
$pathMap = $themeConfig->pathMap;
$parentConfig = $themeConfig->getParent();
if ($parentConfig) {
$pathMap = array_merge($pathMap, $this->getAdditionalPathMap($parentConfig));
}
return $pathMap;
}
public string getBasePath ( ) | ||
return | string |
The root path of this theme. All resources of this theme are located under this directory. |
---|
public function getBasePath()
{
return $this->_basePath;
}
Defined in: yii\base\Theme::getBaseUrl()
public string getBaseUrl ( ) | ||
return | string |
The base URL (without ending slash) for this theme. All resources of this theme are considered to be under this base URL. |
---|
public function getBaseUrl()
{
return $this->_baseUrl;
}
Defined in: yii\base\Component::getBehavior()
Returns the named behavior object.
public yii\base\Behavior|null getBehavior ( $name ) | ||
$name | string |
The behavior name |
return | yii\base\Behavior|null |
The behavior object, or null if the behavior does not exist |
---|
public function getBehavior($name)
{
$this->ensureBehaviors();
return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
Defined in: yii\base\Component::getBehaviors()
Returns all behaviors attached to this component.
public yii\base\Behavior[] getBehaviors ( ) | ||
return | yii\base\Behavior[] |
List of behaviors attached to this component |
---|
public function getBehaviors()
{
$this->ensureBehaviors();
return $this->_behaviors;
}
Theme configuration that contains the base theme information.
public luya\theme\ThemeConfig getConfig ( ) |
public function getConfig()
{
return $this->_config;
}
The name of the layout to be applied to this theme views.
public string getLayout ( ) | ||
return | string |
Default |
---|
public function getLayout()
{
return $this->_layout;
}
Path to the directory that contains the theme layouts.
public string getLayoutPath ( ) |
public function getLayoutPath()
{
return $this->viewPath . '/' . self::LAYOUTS_PATH;
}
Defined in: yii\base\Theme::getPath()
Converts a relative file path into an absolute one using $basePath.
public string getPath ( $path ) | ||
$path | string |
The relative file path to be converted. |
return | string |
The absolute file path |
---|---|---|
throws | yii\base\InvalidConfigException |
if $basePath is not set |
public function getPath($path)
{
if (($basePath = $this->getBasePath()) !== null) {
return $basePath . DIRECTORY_SEPARATOR . ltrim($path, '/\\');
}
throw new InvalidConfigException('The "basePath" property must be set.');
}
Defined in: yii\base\Theme::getUrl()
Converts a relative URL into an absolute URL using $baseUrl.
public string getUrl ( $url ) | ||
$url | string |
The relative URL to be converted. |
return | string |
The absolute URL |
---|---|---|
throws | yii\base\InvalidConfigException |
if $baseUrl is not set |
public function getUrl($url)
{
if (($baseUrl = $this->getBaseUrl()) !== null) {
return $baseUrl . '/' . ltrim($url, '/');
}
throw new InvalidConfigException('The "baseUrl" property must be set.');
}
Path to the directory that contains the theme views.
public string getViewPath ( ) |
public function getViewPath()
{
return $this->getConfig()->getViewPath();
}
Defined in: yii\base\Component::hasEventHandlers()
Returns a value indicating whether there is any handler attached to the named event.
public boolean hasEventHandlers ( $name ) | ||
$name | string |
The event name |
return | boolean |
Whether there is any handler attached to the event. |
---|
public function hasEventHandlers($name)
{
$this->ensureBehaviors();
if (!empty($this->_events[$name])) {
return true;
}
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
return true;
}
}
return Event::hasHandlers($this, $name);
}
Defined in: yii\base\Component::hasMethod()
Returns a value indicating whether a method is defined.
A method is defined if:
- the class has a method with the specified name
- an attached behavior has a method with the given name (when
$checkBehaviors
is true).
public boolean hasMethod ( $name, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkBehaviors | boolean |
Whether to treat behaviors' methods as methods of this component |
return | boolean |
Whether the method is defined |
---|
public function hasMethod($name, $checkBehaviors = true)
{
if (method_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->hasMethod($name)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::hasProperty()
Returns a value indicating whether a property is defined for this component.
A property is defined if:
- the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a property of the given name (when
$checkBehaviors
is true).
See also:
public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property is defined |
---|
public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
Initialize the theme.
public void init ( ) | ||
throws | yii\base\InvalidConfigException |
---|
public function init()
{
if ($this->getBasePath() === null) {
throw new InvalidConfigException("Property base path must be set");
}
$this->initPathMap($this->_config);
parent::init();
}
Init the path mapping include the parent themes
protected void initPathMap ( luya\theme\ThemeConfig $themeConfig ) | ||
$themeConfig |
protected function initPathMap(ThemeConfig $themeConfig)
{
$pathMap = ['@app/views', $themeConfig->getViewPath()];
$viewPath = $this->getViewPath();
$this->pathMap[$viewPath] = &$pathMap;
foreach ($themeConfig->getParents() as $parentConfig) {
$pathMap[] = $parentConfig->getViewPath();
$this->pathMap[$parentConfig->getViewPath()] = &$pathMap;
}
$additionalPathMap = $this->getAdditionalPathMap($themeConfig);
foreach ($additionalPathMap as $from) {
$this->pathMap[$from] = $pathMap;
}
$pos = strpos($viewPath, '/');
$rootPath = $pos === false ? $viewPath : (substr($viewPath, 0, $pos) . '/views');
$this->pathMap[$rootPath] = $pathMap;
$this->pathMap['@app/views'] = $pathMap;
}
Defined in: yii\base\Component::off()
Detaches an existing event handler from this component.
This method is the opposite of on().
Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.
See also on().
public boolean off ( $name, $handler = null ) | ||
$name | string |
Event name |
$handler | callable|null |
The event handler to be removed. If it is null, all handlers attached to the named event will be removed. |
return | boolean |
If a handler is found and detached |
---|
public function off($name, $handler = null)
{
$this->ensureBehaviors();
if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
return false;
}
if ($handler === null) {
unset($this->_events[$name], $this->_eventWildcards[$name]);
return true;
}
$removed = false;
// plain event names
if (isset($this->_events[$name])) {
foreach ($this->_events[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_events[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_events[$name] = array_values($this->_events[$name]);
return true;
}
}
// wildcard event names
if (isset($this->_eventWildcards[$name])) {
foreach ($this->_eventWildcards[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_eventWildcards[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
// remove empty wildcards to save future redundant regex checks:
if (empty($this->_eventWildcards[$name])) {
unset($this->_eventWildcards[$name]);
}
}
}
return $removed;
}
Defined in: yii\base\Component::on()
Attaches an event handler to an event.
The event handler must be a valid PHP callback. The following are some examples:
function ($event) { ... } // anonymous function
[$object, 'handleClick'] // $object->handleClick()
['Page', 'handleClick'] // Page::handleClick()
'handleClick' // global function handleClick()
The event handler must be defined with the following signature,
function ($event)
where $event
is an yii\base\Event object which includes parameters associated with the event.
Since 2.0.14 you can specify event name as a wildcard pattern:
$component->on('event.group.*', function ($event) {
Yii::trace($event->name . ' is triggered.');
});
See also off().
public void on ( $name, $handler, $data = null, $append = true ) | ||
$name | string |
The event name |
$handler | callable |
The event handler |
$data | mixed |
The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data. |
$append | boolean |
Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list. |
public function on($name, $handler, $data = null, $append = true)
{
$this->ensureBehaviors();
if (strpos($name, '*') !== false) {
if ($append || empty($this->_eventWildcards[$name])) {
$this->_eventWildcards[$name][] = [$handler, $data];
} else {
array_unshift($this->_eventWildcards[$name], [$handler, $data]);
}
return;
}
if ($append || empty($this->_events[$name])) {
$this->_events[$name][] = [$handler, $data];
} else {
array_unshift($this->_events[$name], [$handler, $data]);
}
}
public void setBasePath ( $path ) | ||
$path | string |
The root path or path alias of this theme. All resources of this theme are located under this directory. |
public function setBasePath($path)
{
$this->_basePath = Yii::getAlias($path);
}
Defined in: yii\base\Theme::setBaseUrl()
public void setBaseUrl ( $url ) | ||
$url | string |
The base URL or path alias for this theme. All resources of this theme are considered to be under this base URL. |
public function setBaseUrl($url)
{
$this->_baseUrl = $url === null ? null : rtrim(Yii::getAlias($url), '/');
}
Defined in: yii\base\Component::trigger()
Triggers an event.
This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.
public void trigger ( $name, yii\base\Event $event = null ) | ||
$name | string |
The event name |
$event | yii\base\Event|null |
The event instance. If not set, a default yii\base\Event object will be created. |
public function trigger($name, Event $event = null)
{
$this->ensureBehaviors();
$eventHandlers = [];
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (StringHelper::matchWildcard($wildcard, $name)) {
$eventHandlers[] = $handlers;
}
}
if (!empty($this->_events[$name])) {
$eventHandlers[] = $this->_events[$name];
}
if (!empty($eventHandlers)) {
$eventHandlers = call_user_func_array('array_merge', $eventHandlers);
if ($event === null) {
$event = new Event();
}
if ($event->sender === null) {
$event->sender = $this;
}
$event->handled = false;
$event->name = $name;
foreach ($eventHandlers as $handler) {
$event->data = $handler[1];
call_user_func($handler[0], $event);
// stop further handling if the event is handled
if ($event->handled) {
return;
}
}
}
// invoke class-level attached handlers
Event::trigger($this, $name, $event);
}