// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/svg/svg_animated_string.h"

#include "third_party/blink/renderer/bindings/core/v8/v8_union_string_trustedscripturl.h"
#include "third_party/blink/renderer/core/svg/svg_element.h"
#include "third_party/blink/renderer/core/trustedtypes/trusted_script_url.h"
#include "third_party/blink/renderer/core/trustedtypes/trusted_types_util.h"
#include "third_party/blink/renderer/core/xlink_names.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"

namespace blink {

String SVGAnimatedString::baseVal() {
  return SVGAnimatedProperty<SVGString>::baseVal();
}

void SVGAnimatedString::setBaseVal(const V8UnionStringOrTrustedScriptURL* value,
                                   ExceptionState& exception_state) {
  DCHECK(value);

  // https://github.com/w3c/svgwg/pull/934, and formerly
  // https://w3c.github.io/trusted-types/dist/spec/#integration-with-svg
  String string;
  switch (value->GetContentType()) {
    case V8UnionStringOrTrustedScriptURL::ContentType::kString:
      string = value->GetAsString();
      if (ContextElement()->IsScriptElement()) {
        // Newer updates to Trusted Types are more specific on which values to
        // check and how to name them. Until the TrustedTypesHTML flag can be
        // removed, we need to support both ways:
        if (RuntimeEnabledFeatures::TrustedTypesHTMLEnabled()) {
          // https://github.com/w3c/svgwg/pull/934
          if (AttributeName() == svg_names::kHrefAttr ||
              AttributeName() == xlink_names::kHrefAttr) {
            string = TrustedTypesCheckForScriptURL(
                string, ContextElement()->GetExecutionContext(),
                trusted_types_names::kSVGScriptElement,
                trusted_types_names::kHref, exception_state);
          }
        } else {
          // https://w3c.github.io/trusted-types/dist/spec/#integration-with-svg
          // (Spec is no longer current.)
          string = TrustedTypesCheckForScriptURL(
              string, ContextElement()->GetExecutionContext(),
              trusted_types_names::kSVGAnimatedString,
              trusted_types_names::kBaseVal, exception_state);
        }
        if (exception_state.HadException())
          return;
      }
      break;
    case V8UnionStringOrTrustedScriptURL::ContentType::kTrustedScriptURL:
      string = value->GetAsTrustedScriptURL()->toString();
      break;
  }
  SVGAnimatedProperty<SVGString>::setBaseVal(string, exception_state);
}

String SVGAnimatedString::animVal() {
  return SVGAnimatedProperty<SVGString>::animVal();
}

void SVGAnimatedString::Trace(Visitor* visitor) const {
  SVGAnimatedProperty<SVGString>::Trace(visitor);
  ScriptWrappable::Trace(visitor);
}

}  // namespace blink