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README.md

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+SimpleGUI
+===================
+
+__The GUI SDK based on php-gui for SimpleFramework(CLI)__
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Introduction
+-------------
+With this SDK, you can create a visual window quickly and easily.
+
+Get SimpleGUI
+-------------
+__[Releases](https://github.com/PeratX/SimpleGUI/releases)__

info.json

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+{
+  "name": "SimpleGUI",
+  "version": "1.0.0",
+  "api": 2,
+  "description": "The GUI SDK based on php-gui for SimpleFramework.",
+  "author": "PeratX",
+  "main": "SimpleGUI\\Main",
+  "order": 0,
+  "website": "https://github.com/PeratX/SimpleGUI"
+}

src/Evenement/EventEmitter.php

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+<?php
+
+/*
+ * This file is part of Evenement.
+ *
+ * (c) Igor Wiedler <igor@wiedler.ch>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Evenement;
+
+class EventEmitter implements EventEmitterInterface
+{
+    use EventEmitterTrait;
+}

src/Evenement/EventEmitterInterface.php

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+<?php
+
+/*
+ * This file is part of Evenement.
+ *
+ * (c) Igor Wiedler <igor@wiedler.ch>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Evenement;
+
+interface EventEmitterInterface
+{
+    public function on($event, callable $listener);
+    public function once($event, callable $listener);
+    public function removeListener($event, callable $listener);
+    public function removeAllListeners($event = null);
+    public function listeners($event);
+    public function emit($event, array $arguments = []);
+}

src/Evenement/EventEmitterTrait.php

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+<?php
+
+/*
+ * This file is part of Evenement.
+ *
+ * (c) Igor Wiedler <igor@wiedler.ch>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Evenement;
+
+trait EventEmitterTrait
+{
+    protected $listeners = [];
+
+    public function on($event, callable $listener)
+    {
+        if (!isset($this->listeners[$event])) {
+            $this->listeners[$event] = [];
+        }
+
+        $this->listeners[$event][] = $listener;
+    }
+
+    public function once($event, callable $listener)
+    {
+        $onceListener = function () use (&$onceListener, $event, $listener) {
+            $this->removeListener($event, $onceListener);
+
+            call_user_func_array($listener, func_get_args());
+        };
+
+        $this->on($event, $onceListener);
+    }
+
+    public function removeListener($event, callable $listener)
+    {
+        if (isset($this->listeners[$event])) {
+            $index = array_search($listener, $this->listeners[$event], true);
+            if (false !== $index) {
+                unset($this->listeners[$event][$index]);
+            }
+        }
+    }
+
+    public function removeAllListeners($event = null)
+    {
+        if ($event !== null) {
+            unset($this->listeners[$event]);
+        } else {
+            $this->listeners = [];
+        }
+    }
+
+    public function listeners($event)
+    {
+        return isset($this->listeners[$event]) ? $this->listeners[$event] : [];
+    }
+
+    public function emit($event, array $arguments = [])
+    {
+        foreach ($this->listeners($event) as $listener) {
+            call_user_func_array($listener, $arguments);
+        }
+    }
+}