Expose minContentWidth/maxContentWidth and a callback for computing them.

sky/engine/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 927 matching lines @@
         return box->height();
     return 0;
 }
 
 void Element::setHeight(double height)
 {
     if (RenderBox* box = renderBox())
         return box->setHeight(height);
 }
 
+double Element::minContentWidth() const
+{
+    if (RenderBox* box = renderBox())
+        return box->minPreferredLogicalWidth();
+    return 0;
+}
+
+void Element::setMinContentWidth(double width)
+{
+    if (RenderBox* box = renderBox())
+        return box->setMinPreferredLogicalWidth(width);
+}
+
+double Element::maxContentWidth() const
+{
+    if (RenderBox* box = renderBox())
+        return box->maxPreferredLogicalWidth();
+    return 0;
+}
+
+void Element::setMaxContentWidth(double width)
+{
+    if (RenderBox* box = renderBox())
+        return box->setMaxPreferredLogicalWidth(width);
+}
+
 void Element::setNeedsLayout()
 {
     if (RenderBox* box = renderBox())
         box->setNeedsLayout();
 }
 
 void Element::layout()
 {
     if (RenderBox* box = renderBox())
         box->layoutIfNeeded();
 }
 
 LayoutCallback* Element::layoutManager() const
 {
     return m_layoutManager.get();
 }
 
-void Element::setLayoutManager(PassOwnPtr<LayoutCallback> callback)
+LayoutCallback* Element::intrinsicWidthsComputer() const
+{
+    return m_intrinsicWidthsComputer.get();
+}
+
+void Element::setLayoutManager(PassOwnPtr<LayoutCallback> layoutManager,
+    PassOwnPtr<LayoutCallback> intrinsicWidthsComputer)
 {
     bool isAlreadyCustomLayout = renderer() && renderer()->isRenderCustomLayout();
-    bool requiresCustomLayout = callback;
+    bool requiresCustomLayout = layoutManager;
     if (requiresCustomLayout != isAlreadyCustomLayout) {
         // We don't go through the normal reattach codepaths because
         // those are all tied to changes to the RenderStyle.
         markAncestorsWithChildNeedsStyleRecalc();
         detach();
-    } else if (callback.get() != m_layoutManager) {
+    } else if (layoutManager.get() != m_layoutManager) {
         setNeedsLayout();
     }
-    m_layoutManager = callback;
+    m_layoutManager = layoutManager;
+    m_intrinsicWidthsComputer = intrinsicWidthsComputer;
 }
 
 void Element::childrenChanged(const ChildrenChange& change)
 {
     ContainerNode::childrenChanged(change);
 
     if (ElementShadow* shadow = this->shadow())
         shadow->setNeedsDistributionRecalc();
 }
 
@@ skipping 658 matching lines @@
         return false;
     if (treeScope().scopedStyleResolver().hasSelectorForId(idValue))
         return true;
     // Host rules could also have effects.
     if (ShadowRoot* shadowRoot = this->shadowRoot())
         return shadowRoot->scopedStyleResolver().hasSelectorForId(idValue);
     return false;
 }
 
 } // namespace blink