gecko/accessible/public/nsIAccessibilityService.idl

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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 * The Original Code is the Mozilla browser.
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 * The Initial Developer of the Original Code is
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#include "nsISupports.idl"
#include "nsIAccessibleRetrieval.idl"

interface nsIDocument;
interface nsIFrame;
interface nsObjectFrame;
interface nsIContent;

[uuid(e0498def-1552-4763-8c47-6c6cc36c7aa0)]
interface nsIAccessibilityService : nsIAccessibleRetrieval
{
  nsIAccessible createOuterDocAccessible(in nsIDOMNode aNode);
  nsIAccessible createRootAccessible(in nsIPresShell aShell, in nsIDocument aDocument);

  nsIAccessible createHTML4ButtonAccessible(in nsIFrame aFrame);
  nsIAccessible createHyperTextAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLBRAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLButtonAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLAccessibleByMarkup(in nsIFrame aFrame, in nsIWeakReference aWeakShell, in nsIDOMNode aDOMNode);
  nsIAccessible createHTMLLIAccessible(in nsIFrame aFrame, in nsIFrame aBulletFrame, in AString aBulletText);
  nsIAccessible createHTMLCheckboxAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLComboboxAccessible(in nsIDOMNode aNode, in nsIWeakReference aPresShell);
  nsIAccessible createHTMLGenericAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLGroupboxAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLHRAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLImageAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLLabelAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLListboxAccessible(in nsIDOMNode aNode, in nsIWeakReference aPresShell);
  nsIAccessible createHTMLMediaAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLObjectFrameAccessible(in nsObjectFrame aFrame);
  nsIAccessible createHTMLRadioButtonAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLSelectOptionAccessible(in nsIDOMNode aNode, in nsIAccessible aAccParent, in nsIWeakReference aPresShell);
  nsIAccessible createHTMLTableAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLTableCellAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLTextAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLTextFieldAccessible(in nsIFrame aFrame);
  nsIAccessible createHTMLCaptionAccessible(in nsIFrame aFrame);

  /**
   * Return an accessible for the given DOM node.
   *
   * @param  aNode       [in] the given node
   * @param  aPresShell  [in] the pres shell of the node
   * @param  aWeakShell  [in] the weak shell for the pres shell
   * @param  aFrameHint  [in] the frame of the given node
   * @param  aIsHidden   [out] indicates whether the node's frame is hidden
   */
  nsIAccessible getAccessible(in nsIDOMNode aNode, in nsIPresShell aPresShell,
                              in nsIWeakReference aWeakShell,
                              in nsIFrame aFrameHint, out boolean aIsHidden);

  // For gtk+ native window accessible
  nsIAccessible addNativeRootAccessible(in voidPtr aAtkAccessible);
  void removeNativeRootAccessible(in nsIAccessible aRootAccessible);

  /**
   * Used to describe sort of changes leading to accessible tree invalidation.
   */
  const unsigned long NODE_APPEND = 0x01;
  const unsigned long NODE_REMOVE = 0x02;
  const unsigned long NODE_SIGNIFICANT_CHANGE = 0x03;
  const unsigned long FRAME_SHOW = 0x04;
  const unsigned long FRAME_HIDE = 0x05;
  const unsigned long FRAME_SIGNIFICANT_CHANGE = 0x06;

  /**
   * Invalidate the accessible tree when DOM tree or frame tree is changed.
   *
   * @param aPresShell   [in] the presShell where changes occured
   * @param aContent     [in] the affected DOM content
   * @param aChangeType  [in] the change type (see constants declared above)
   */
  void invalidateSubtreeFor(in nsIPresShell aPresShell, in nsIContent aContent,
                            in PRUint32 aChangeType);

  /**
   * Notify accessibility that anchor jump has been accomplished to the given
   * target. Used by layout.
   */
  void notifyOfAnchorJumpTo(in nsIContent aTarget);

  /**
   * Fire accessible event of the given type for the given target.
   *
   * @param aEvent   [in] accessible event type
   * @param aTarget  [in] target of accessible event
   */
  void fireAccessibleEvent(in unsigned long aEvent, in nsIAccessible aTarget);
};


%{ C++

// for component registration
// {DE401C37-9A7F-4278-A6F8-3DE2833989EF}
#define NS_ACCESSIBILITY_SERVICE_CID \
{ 0xde401c37, 0x9a7f, 0x4278, { 0xa6, 0xf8, 0x3d, 0xe2, 0x83, 0x39, 0x89, 0xef } }

extern nsresult
NS_GetAccessibilityService(nsIAccessibilityService** aResult);

%}