gecko-dev/layout/style/BindingStyleRule.h

62 строки
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_BindingStyleRule_h__
#define mozilla_BindingStyleRule_h__
#include "nscore.h"
#include "nsStringGlue.h"
#include "mozilla/css/Rule.h"
/**
* Shared superclass for mozilla::css::StyleRule and mozilla::ServoStyleRule,
* for use from bindings code.
*/
class nsICSSDeclaration;
namespace mozilla {
class BindingStyleRule : public css::Rule
{
protected:
BindingStyleRule(uint32_t aLineNumber, uint32_t aColumnNumber)
: css::Rule(aLineNumber, aColumnNumber)
{
}
BindingStyleRule(const BindingStyleRule& aCopy)
: css::Rule(aCopy)
{
}
virtual ~BindingStyleRule() {}
public:
// This is pure virtual because we have no members, and are an abstract class
// to start with. The fact that we have to have this declaration at all is
// kinda dumb. :(
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const override MOZ_MUST_OVERRIDE = 0;
// Likewise for this one. We have to override our superclass, but don't
// really need to do anything in this method.
virtual bool IsCCLeaf() const override MOZ_MUST_OVERRIDE = 0;
// WebIDL API
// For GetSelectorText/SetSelectorText, we purposefully use a signature that
// matches the nsIDOMCSSStyleRule one for now, so subclasses can just
// implement both at once. The actual implementations must never return
// anything other than NS_OK;
NS_IMETHOD GetSelectorText(nsAString& aSelectorText) = 0;
NS_IMETHOD SetSelectorText(const nsAString& aSelectorText) = 0;
virtual nsICSSDeclaration* Style() = 0;
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
};
} // namespace mozilla
#endif // mozilla_BindingStyleRule_h__