Add initial Screen Orientation API support: IDL changes

Source/modules/screen_orientation/ScreenOrientation.cpp

Index: Source/modules/screen_orientation/ScreenOrientation.cpp
diff --git a/Source/modules/screen_orientation/ScreenOrientation.cpp b/Source/modules/screen_orientation/ScreenOrientation.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..cc003c6e63029c876646bc8eae3bfe5e622c79b5
--- /dev/null
+++ b/Source/modules/screen_orientation/ScreenOrientation.cpp
@@ -0,0 +1,82 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "ScreenOrientation.h"
+
+#include "core/dom/Document.h"
+#include "core/frame/DOMWindow.h"
+#include "core/frame/Frame.h"
+#include "core/frame/Screen.h"
+
+namespace WebCore {
+
+ScreenOrientation::ScreenOrientation(Screen* screen)
+    : ActiveDOMObject(screen->frame()->document())
+{
+}
+
+const char* ScreenOrientation::supplementName()
+{
+    return "ScreenOrientation";
+}
+
+ScreenOrientation* ScreenOrientation::from(Screen* screen)
+{
+    ScreenOrientation* supplement = static_cast<ScreenOrientation*>(Supplement<Screen>::from(screen, supplementName()));
+    if (!supplement) {
+        ASSERT(screen);
+        ASSERT(screen->frame());
+        supplement = new ScreenOrientation(screen);
+        supplement->suspendIfNeeded();

[abarth-chromium, 2014/02/16 04:03:48]

These should be in a static create function.

However, once you move to DOMWindowProperty, you won't have this problem.

[Inactive, 2014/02/16 04:35:56]

Done.

+        provideTo(screen, supplementName(), adoptPtr(supplement));
+    }
+    return supplement;
+}
+
+ScreenOrientation::~ScreenOrientation()
+{
+

[abarth-chromium, 2014/02/16 04:03:48]

You've got an extra blank line here.

[Inactive, 2014/02/16 04:35:56]

Done.

+}
+
+Screen* ScreenOrientation::screen() const
+{
+    Document* document = toDocument(executionContext());
+    ASSERT(document);
+    DOMWindow* window = document->domWindow();
+    ASSERT(window);
+    return window->screen();

[abarth-chromium, 2014/02/16 04:03:48]

Once you're a DOMWindowProperty, this will change a bit too.

[Inactive, 2014/02/16 04:35:56]

Done.

+}
+
+const AtomicString& ScreenOrientation::orientation(Screen* screen)
+{
+    // FIXME: Implement.
+    DEFINE_STATIC_LOCAL(const AtomicString, portraitPrimary, ("portrait-primary", AtomicString::ConstructFromLiteral));
+    return portraitPrimary;
+}
+
+bool ScreenOrientation::lockOrientation(Screen* screen, const Vector<String>& orientations)
+{
+    // FIXME: Implement.
+    return false;
+}
+
+bool ScreenOrientation::lockOrientation(Screen* screen, const AtomicString& orientation)
+{
+    // FIXME: Implement.
+    return false;
+}
+
+void ScreenOrientation::unlockOrientation(Screen* screen)
+{
+    // FIXME: Implement.
+}
+
+void ScreenOrientation::orientationChanged()
+{
+    ASSERT(screen());
+    screen()->dispatchEvent(Event::create(EventTypeNames::orientationchange));
+}

[abarth-chromium, 2014/02/16 04:03:48]

This function don't appear to have any callers.  Can we hold off on adding it
until we add the first caller?  That will help remind me to check whether we
really want to dispatch the event synchronously.

[Inactive, 2014/02/16 04:35:56]

Done.

+
+} // namespace WebCore