content/base/src/nsStyledElement.h
author David Anderson <danderson@mozilla.com>
Wed, 05 Oct 2011 18:37:11 -0700
changeset 105226 cad26d2fb5af799dfe030fd2a8948d617eac2f52
parent 77799 e7854b4d29ba905ae3994f821b160c989bac4260
child 105229 8cfeba5239a9e4f20c462d6fb20421b4e4e7c735
permissions -rw-r--r--
Backout merge.

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 * for the specific language governing rights and limitations under the
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 * The Original Code is Mozilla Communicator client code.
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 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Daniel Kraft <d@domob.eu>
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/**
 * nsStyledElement is the base for elements supporting styling via the
 * id/class/style attributes; it is a common base for their support in HTML,
 * SVG and MathML.
 */

#ifndef __NS_STYLEDELEMENT_H_
#define __NS_STYLEDELEMENT_H_

#include "nsString.h"
#include "nsGenericElement.h"
#include "nsDOMMemoryReporter.h"

namespace mozilla {
namespace css {
class StyleRule;
}
}

typedef nsGenericElement nsStyledElementBase;

class nsStyledElementNotElementCSSInlineStyle : public nsStyledElementBase
{

protected:

  inline nsStyledElementNotElementCSSInlineStyle(already_AddRefed<nsINodeInfo> aNodeInfo)
    : nsStyledElementBase(aNodeInfo)
  {}

public:

  NS_DECL_AND_IMPL_DOM_MEMORY_REPORTER_SIZEOF(nsStyledElementNotElementCSSInlineStyle,
                                              nsStyledElementBase)

  // nsIContent interface methods
  virtual nsIAtom* GetClassAttributeName() const;
  virtual nsIAtom* GetIDAttributeName() const;
  virtual nsIAtom* DoGetID() const;
  virtual const nsAttrValue* DoGetClasses() const;

  virtual mozilla::css::StyleRule* GetInlineStyleRule();
  NS_IMETHOD SetInlineStyleRule(mozilla::css::StyleRule* aStyleRule, PRBool aNotify);

  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                              nsIContent* aBindingParent,
                              PRBool aCompileEventHandlers);
  virtual void UnbindFromTree(PRBool aDeep, PRBool aNullParent);

  virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
                             PRBool aNotify);
  virtual nsresult AfterSetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
                                const nsAString* aValue, PRBool aNotify);

  nsIDOMCSSStyleDeclaration* GetStyle(nsresult* retval);

protected:

  /**
   * Parse a style attr value into a CSS rulestruct (or, if there is no
   * document, leave it as a string) and return as nsAttrValue.
   *
   * @param aValue the value to parse
   * @param aResult the resulting HTMLValue [OUT]
   */
  void ParseStyleAttribute(const nsAString& aValue,
                           nsAttrValue& aResult,
                           PRBool aForceInDataDoc);

  virtual PRBool ParseAttribute(PRInt32 aNamespaceID, nsIAtom* aAttribute,
                                const nsAString& aValue, nsAttrValue& aResult);

  /**
   * Create the style struct from the style attr.  Used when an element is
   * first put into a document.  Only has an effect if the old value is a
   * string.  If aForceInDataDoc is true, will reparse even if we're in a data
   * document.
   */
  nsresult  ReparseStyleAttribute(PRBool aForceInDataDoc);
};

class nsStyledElement : public nsStyledElementNotElementCSSInlineStyle {
public:
  NS_DECL_AND_IMPL_DOM_MEMORY_REPORTER_SIZEOF(nsStyledElement,
                                              nsStyledElementNotElementCSSInlineStyle)

protected:
  inline nsStyledElement(already_AddRefed<nsINodeInfo> aNodeInfo)
    : nsStyledElementNotElementCSSInlineStyle(aNodeInfo)
  {}
};

#endif // __NS_STYLEDELEMENT_H_