Add a StyleValueFactory that converts CSSValues to StyleValues.

BUG=545318

Review URL: https://codereview.chromium.org/1752173002

Cr-Commit-Position: refs/heads/master@{#378958}

5 files changed, 53 insertions, 7 deletions

diff --git a/third_party/WebKit/Source/core/core.gypi b/third_party/WebKit/Source/core/core.gypi
index 4b1018d..27c2390 100644
--- a/third_party/WebKit/Source/core/core.gypi
+++ b/third_party/WebKit/Source/core/core.gypi
@@ -1320,6 +1320,8 @@
             'css/cssom/StylePropertyMap.h',
             'css/cssom/StyleValue.cpp',
             'css/cssom/StyleValue.h',
+            'css/cssom/StyleValueFactory.cpp',
+            'css/cssom/StyleValueFactory.h',
             'css/cssom/TransformComponent.h',
             'css/cssom/TransformValue.cpp',
             'css/cssom/TransformValue.h',
diff --git a/third_party/WebKit/Source/core/css/cssom/StyleValue.cpp b/third_party/WebKit/Source/core/css/cssom/StyleValue.cpp
index e91a459..4b168d6 100644
--- a/third_party/WebKit/Source/core/css/cssom/StyleValue.cpp
+++ b/third_party/WebKit/Source/core/css/cssom/StyleValue.cpp
@@ -5,15 +5,10 @@
 #include "core/css/cssom/StyleValue.h"
 
 #include "bindings/core/v8/ScriptValue.h"
+#include "core/css/cssom/SimpleLength.h"
 
 namespace blink {
 
-StyleValue* StyleValue::create(const CSSValue& val)
-{
-    // TODO: implement.
-    return nullptr;
-}
-
 ScriptValue StyleValue::parse(ScriptState* state, const String& property, const String& cssText)
 {
     // TODO: implement.
diff --git a/third_party/WebKit/Source/core/css/cssom/StyleValue.h b/third_party/WebKit/Source/core/css/cssom/StyleValue.h
index 9f90924..726518b 100644
--- a/third_party/WebKit/Source/core/css/cssom/StyleValue.h
+++ b/third_party/WebKit/Source/core/css/cssom/StyleValue.h
@@ -27,7 +27,6 @@ public:
 
     virtual StyleValueType type() const = 0;
 
-    static StyleValue* create(const CSSValue&);
     static ScriptValue parse(ScriptState*, const String& property, const String& cssText);
 
     virtual PassRefPtrWillBeRawPtr<CSSValue> toCSSValue() const = 0;
diff --git a/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
new file mode 100644
index 0000000..2a0a0a7
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
@@ -0,0 +1,25 @@
+// Copyright 2016 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 "core/css/cssom/StyleValueFactory.h"
+
+#include "core/css/CSSValue.h"
+#include "core/css/cssom/SimpleLength.h"
+#include "core/css/cssom/StyleValue.h"
+
+namespace blink {
+
+StyleValue* StyleValueFactory::create(CSSPropertyID propertyID, const CSSValue& value)
+{
+    if (value.isPrimitiveValue()) {
+        const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
+        if (primitiveValue.isLength() && !primitiveValue.isCalculated()) {
+            return SimpleLength::create(primitiveValue.getDoubleValue(), primitiveValue.typeWithCalcResolved());
+        }
+    }
+    // TODO(meade): Implement the rest.
+    return nullptr;
+}
+
+} // namespace blink
diff --git a/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.h b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.h
new file mode 100644
index 0000000..36a4437
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.h
@@ -0,0 +1,25 @@
+// Copyright 2016 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.
+
+#ifndef StyleValueFactory_h
+#define StyleValueFactory_h
+
+#include "core/CSSPropertyNames.h"
+#include "wtf/Allocator.h"
+
+namespace blink {
+
+class CSSValue;
+class StyleValue;
+
+class StyleValueFactory {
+    STATIC_ONLY(StyleValueFactory);
+
+public:
+    static StyleValue* create(CSSPropertyID, const CSSValue&);
+};
+
+} // namespace blink
+
+#endif