Merge pull request #3978 from owncloud/forwarding-emitter
add forwarding emitter for agregating multiple emitters
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commit
d134ba9a82
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@ -13,7 +13,7 @@ abstract class BasicEmitter implements Emitter {
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/**
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/**
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* @var (callable[])[] $listeners
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* @var (callable[])[] $listeners
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*/
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*/
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private $listeners = array();
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protected $listeners = array();
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/**
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/**
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* @param string $scope
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* @param string $scope
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@ -0,0 +1,50 @@
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<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Hooks;
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/**
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* Class ForwardingEmitter
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*
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* allows forwarding all listen calls to other emitters
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*
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* @package OC\Hooks
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*/
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abstract class ForwardingEmitter extends BasicEmitter {
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/**
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* @var \OC\Hooks\Emitter[] array
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*/
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private $forwardEmitters = array();
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/**
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* @param string $scope
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* @param string $method
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* @param callable $callback
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*/
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public function listen($scope, $method, $callback) {
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parent::listen($scope, $method, $callback);
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foreach ($this->forwardEmitters as $emitter) {
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$emitter->listen($scope, $method, $callback);
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}
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}
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/**
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* @param \OC\Hooks\Emitter $emitter
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*/
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protected function forward($emitter) {
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$this->forwardEmitters[] = $emitter;
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//forward all previously connected hooks
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foreach ($this->listeners as $key => $listeners) {
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list($scope, $method) = explode('::', $key, 2);
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foreach ($listeners as $listener) {
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$emitter->listen($scope, $method, $listener);
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}
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}
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}
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}
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@ -0,0 +1,74 @@
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<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace Test\Hooks;
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use OC\Hooks\PublicEmitter;
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class DummyForwardingEmitter extends \OC\Hooks\ForwardingEmitter {
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public function emitEvent($scope, $method, $arguments = array()) {
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$this->emit($scope, $method, $arguments);
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}
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/**
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* @param \OC\Hooks\Emitter $emitter
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*/
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public function forward($emitter) {
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parent::forward($emitter);
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}
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}
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/**
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* Class ForwardingEmitter
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*
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* allows forwarding all listen calls to other emitters
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*
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* @package OC\Hooks
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*/
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class ForwardingEmitter extends BasicEmitter {
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public function testSingleForward() {
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$baseEmitter = new PublicEmitter();
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$forwardingEmitter = new DummyForwardingEmitter();
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$forwardingEmitter->forward($baseEmitter);
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$hookCalled = false;
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$forwardingEmitter->listen('Test', 'test', function () use (&$hookCalled) {
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$hookCalled = true;
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});
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$baseEmitter->emit('Test', 'test');
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$this->assertTrue($hookCalled);
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}
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public function testMultipleForwards() {
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$baseEmitter1 = new PublicEmitter();
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$baseEmitter2 = new PublicEmitter();
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$forwardingEmitter = new DummyForwardingEmitter();
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$forwardingEmitter->forward($baseEmitter1);
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$forwardingEmitter->forward($baseEmitter2);
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$hookCalled = 0;
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$forwardingEmitter->listen('Test', 'test1', function () use (&$hookCalled) {
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$hookCalled++;
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});
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$forwardingEmitter->listen('Test', 'test2', function () use (&$hookCalled) {
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$hookCalled++;
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});
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$baseEmitter1->emit('Test', 'test1');
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$baseEmitter1->emit('Test', 'test2');
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$this->assertEquals(2, $hookCalled);
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}
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public function testForwardExistingHooks() {
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$baseEmitter = new PublicEmitter();
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$forwardingEmitter = new DummyForwardingEmitter();
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$hookCalled = false;
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$forwardingEmitter->listen('Test', 'test', function () use (&$hookCalled) {
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$hookCalled = true;
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});
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$forwardingEmitter->forward($baseEmitter);
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$baseEmitter->emit('Test', 'test');
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$this->assertTrue($hookCalled);
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}
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}
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