Bindings for CSSOM View smooth scroll API

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 12 matching lines @@
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/dom/Element.h"
 
 #include "CSSValueKeywords.h"
 #include "RuntimeEnabledFeatures.h"
 #include "SVGNames.h"
 #include "XMLNames.h"
+#include "bindings/v8/Dictionary.h"
 #include "bindings/v8/ExceptionState.h"
 #include "core/accessibility/AXObjectCache.h"
 #include "core/animation/DocumentTimeline.h"
 #include "core/animation/css/CSSAnimations.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/CSSValuePool.h"
 #include "core/css/PropertySetCSSStyleDeclaration.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/parser/BisonCSSParser.h"
 #include "core/css/resolver/StyleResolver.h"
@@ skipping 45 matching lines @@
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "core/page/PointerLockController.h"
 #include "core/rendering/FlowThreadController.h"
 #include "core/rendering/RenderNamedFlowFragment.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/RenderWidget.h"
 #include "core/svg/SVGDocumentExtensions.h"
 #include "core/svg/SVGElement.h"
+#include "platform/scroll/ScrollableArea.h"
 #include "wtf/BitVector.h"
 #include "wtf/HashFunctions.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextPosition.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 using namespace XMLNames;
@@ skipping 629 matching lines @@
         if (!frame)
             return;
         FrameView* view = frame->view();
         if (!view)
             return;
 
         view->setScrollPosition(IntPoint(static_cast<int>(newLeft * frame->pageZoomFactor()), view->scrollY()));
     }
 }
 
+void Element::setScrollLeft(const Dictionary& scrollOptionsHorizontal, ExceptionState& exceptionState)
+{
+    String scrollBehaviorString;
+    ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
+    if (scrollOptionsHorizontal.get("behavior", scrollBehaviorString)) {
+        if (!ScrollableArea::scrollBehaviorFromString(scrollBehaviorString, scrollBehavior)) {
+            exceptionState.throwTypeError("The ScrollBehavior provided is invalid.");
+            return;
+        }
+    }
+
+    int position;
+    if (!scrollOptionsHorizontal.get("x", position)) {
+        exceptionState.throwTypeError("ScrollOptionsHorizontal must include an 'x' member.");
+        return;
+    }
+
+    // FIXME: Use scrollBehavior to decide whether to scroll smoothly or instantly.
+    setScrollLeft(position);
+}
+
 void Element::setScrollTop(int newTop)
 {
     document().updateLayoutIgnorePendingStylesheets();
 
     if (document().documentElement() != this) {
         if (RenderBox* rend = renderBox())
             rend->setScrollTop(static_cast<int>(newTop * rend->style()->effectiveZoom()));
         return;
     }
 
     if (RuntimeEnabledFeatures::scrollTopLeftInteropEnabled()) {
         if (document().inQuirksMode())
             return;
 
         Frame* frame = document().frame();
         if (!frame)
             return;
         FrameView* view = frame->view();
         if (!view)
             return;
 
         view->setScrollPosition(IntPoint(view->scrollX(), static_cast<int>(newTop * frame->pageZoomFactor())));
     }
 }
 
+void Element::setScrollTop(const Dictionary& scrollOptionsVertical, ExceptionState& exceptionState)
+{
+    String scrollBehaviorString;
+    ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
+    if (scrollOptionsVertical.get("behavior", scrollBehaviorString)) {
+        if (!ScrollableArea::scrollBehaviorFromString(scrollBehaviorString, scrollBehavior)) {
+            exceptionState.throwTypeError("The ScrollBehavior provided is invalid.");
+            return;
+        }
+    }
+
+    int position;
+    if (!scrollOptionsVertical.get("y", position)) {
+        exceptionState.throwTypeError("ScrollOptionsVertical must include a 'y' member.");
+        return;
+    }
+
+    // FIXME: Use scrollBehavior to decide whether to scroll smoothly or instantly.
+    setScrollTop(position);
+}
+
 int Element::scrollWidth()
 {
     document().updateLayoutIgnorePendingStylesheets();
     if (RenderBox* rend = renderBox())
         return adjustForAbsoluteZoom(rend->scrollWidth(), rend);
     return 0;
 }
 
 int Element::scrollHeight()
 {
@@ skipping 2856 matching lines @@
     // Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
     // and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
     if (hasTagName(optionTag) || hasTagName(optgroupTag))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore