Devtools Animations: Add method to fetch CSS keyframed animations

third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
index ccabca73f8025629b7aead76fc05749f2ed7e002..e59106162c90a26d14ebf64b98c0087d2d4b49fe 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorCSSAgent.cpp
@@ -33,6 +33,7 @@
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/CSSDefaultStyleSheets.h"
 #include "core/css/CSSImportRule.h"
+#include "core/css/CSSKeyframeRule.h"
 #include "core/css/CSSMediaRule.h"
 #include "core/css/CSSRule.h"
 #include "core/css/CSSRuleList.h"
@@ -788,6 +789,33 @@ void InspectorCSSAgent::getMatchedStylesForNode(ErrorString* errorString, int no
     inheritedEntries = entries.release();
 }
 
+void InspectorCSSAgent::getCSSAnimationsForNode(ErrorString* errorString, int nodeId, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframesRule>>& cssKeyframesRules)
+{
+    Element* element = elementForId(errorString, nodeId);
+    if (!element) {
+        *errorString = "Node not found";
+        return;
+    }
+
+    PseudoId elementPseudoId = element->pseudoId();
+    if (elementPseudoId) {
+        element = element->parentOrShadowHostElement();
+        if (!element) {
+            *errorString = "Pseudo element has no parent";
+            return;
+        }
+    }
+
+    Document* ownerDocument = element->ownerDocument();
+    // A non-active document has no styles.
+    if (!ownerDocument->isActive())
+        return;
+
+    StyleResolver& styleResolver = ownerDocument->ensureStyleResolver();
+    RefPtrWillBeRawPtr<CSSRuleList> keyframesRules = styleResolver.keyframesRulesForElement(element);
+    cssKeyframesRules = buildArrayForKeyframesRules(keyframesRules.get());
+}
+
 void InspectorCSSAgent::getInlineStylesForNode(ErrorString* errorString, int nodeId, RefPtr<TypeBuilder::CSS::CSSStyle>& inlineStyle, RefPtr<TypeBuilder::CSS::CSSStyle>& attributesStyle)
 {
     Element* element = elementForId(errorString, nodeId);
@@ -1485,6 +1513,36 @@ PassRefPtr<TypeBuilder::Array<TypeBuilder::CSS::RuleMatch> > InspectorCSSAgent::
     return result;
 }
 
+PassRefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframesRule>> InspectorCSSAgent::buildArrayForKeyframesRules(CSSRuleList* ruleList)
+{
+    RefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframesRule>> result = TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframesRule>::create();
+    if (!ruleList)
+        return result.release();
+
+    // TODO(samli): Filter for unique animations.
+    for (unsigned i = 0; i < ruleList->length(); ++i) {
+        CSSKeyframesRule* rule = toCSSKeyframesRule(ruleList->item(i));
+        RefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframeRule>> keyframes = TypeBuilder::Array<TypeBuilder::CSS::CSSKeyframeRule>::create();
+        for (unsigned j = 0; j < rule->length(); ++j)
+            keyframes->addItem(buildObjectForKeyframeRule(rule->item(j)));
+        RefPtr<TypeBuilder::CSS::CSSKeyframesRule> keyframesRule = TypeBuilder::CSS::CSSKeyframesRule::create()
+            .setAnimationName(rule->name())
+            .setKeyframes(keyframes);
+        result->addItem(keyframesRule);
+    }
+
+    return result;
+}
+
+PassRefPtr<TypeBuilder::CSS::CSSKeyframeRule> InspectorCSSAgent::buildObjectForKeyframeRule(CSSKeyframeRule* keyframeRule)
+{
+    RefPtrWillBeRawPtr<InspectorStyle> inspectorStyle = InspectorStyle::create(keyframeRule->style(), nullptr, nullptr);
+    RefPtr<TypeBuilder::CSS::CSSKeyframeRule> object = TypeBuilder::CSS::CSSKeyframeRule::create()
+        .setKeyText(keyframeRule->keyText())
+        .setStyle(inspectorStyle->buildObjectForStyle());
+    return object;
+}
+
 PassRefPtr<TypeBuilder::CSS::CSSStyle> InspectorCSSAgent::buildObjectForAttributesStyle(Element* element)
 {
     if (!element->isStyledElement())