1 files changed, 83 insertions, 0 deletions
diff --git a/Source/WebCore/Modules/modern-media-controls/controls/button.js b/Source/WebCore/Modules/modern-media-controls/controls/button.js
new file mode 100644
index 000000000..6df091699
--- /dev/null
+++ b/Source/WebCore/Modules/modern-media-controls/controls/button.js
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+class Button extends LayoutItem
+{
+
+    constructor(layoutDelegate)
+    {
+        super({
+            element: "<button />",
+            layoutDelegate
+        });
+
+        this._enabled = true;
+
+        if (GestureRecognizer.SupportsTouches)
+            this._tapGestureRecognizer = new TapGestureRecognizer(this.element, this);
+        else
+            this.element.addEventListener("click", this);
+    }
+
+    // Public
+
+    get enabled()
+    {
+        return this._enabled;
+    }
+
+    set enabled(flag)
+    {
+        if (this._enabled === flag)
+            return;
+
+        this._enabled = flag;
+        if (this.layoutDelegate && typeof this.layoutDelegate.layout === "function")
+            this.layoutDelegate.layout();
+    }
+
+    // Protected
+
+    handleEvent(event)
+    {
+        if (event.type === "click" && event.currentTarget === this.element)
+            this._notifyDelegateOfActivation();
+    }
+
+    gestureRecognizerStateDidChange(recognizer)
+    {
+        if (this._tapGestureRecognizer === recognizer && recognizer.state === GestureRecognizer.States.Recognized)
+            this._notifyDelegateOfActivation();
+    }
+
+    // Private
+
+    _notifyDelegateOfActivation()
+    {
+        if (this._enabled && this.uiDelegate && typeof this.uiDelegate.buttonWasPressed === "function")
+            this.uiDelegate.buttonWasPressed(this);
+    }
+
+}