gecko/accessible/src/xul/nsXULMenuAccessible.h

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 *   Author: Aaron Leventhal (aaronl@netscape.com)
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#ifndef _nsXULMenuAccessible_H_
#define _nsXULMenuAccessible_H_

#include "nsAccessibleWrap.h"
#include "nsIDOMXULSelectCntrlEl.h"

/**
 * The basic implementation of SelectAccessible for XUL select controls.
 */
class nsXULSelectableAccessible : public nsAccessibleWrap
{
public:
  nsXULSelectableAccessible(nsIContent *aContent, nsIWeakReference *aShell);
  virtual ~nsXULSelectableAccessible() {}

  // nsAccessNode
  virtual void Shutdown();

  // SelectAccessible
  virtual bool IsSelect();
  virtual already_AddRefed<nsIArray> SelectedItems();
  virtual PRUint32 SelectedItemCount();
  virtual nsAccessible* GetSelectedItem(PRUint32 aIndex);
  virtual bool IsItemSelected(PRUint32 aIndex);
  virtual bool AddItemToSelection(PRUint32 aIndex);
  virtual bool RemoveItemFromSelection(PRUint32 aIndex);
  virtual bool SelectAll();
  virtual bool UnselectAll();

  // Widgets
  virtual nsAccessible* CurrentItem();

protected:
  // nsIDOMXULMultiSelectControlElement inherits from this, so we'll always have
  // one of these if the widget is valid and not defunct
  nsCOMPtr<nsIDOMXULSelectControlElement> mSelectControl;
};

/**
 * Used for XUL menu, menuitem elements.
 */
class nsXULMenuitemAccessible : public nsAccessibleWrap
{
public:
  enum { eAction_Click = 0 };

  nsXULMenuitemAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsIAccessible
  NS_IMETHOD DoAction(PRUint8 index);
  NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);

  // nsAccessible
  virtual void Description(nsString& aDescription);
  virtual nsresult GetNameInternal(nsAString& aName);
  virtual PRUint32 NativeRole();
  virtual PRUint64 NativeState();
  virtual PRInt32 GetLevelInternal();
  virtual void GetPositionAndSizeInternal(PRInt32 *aPosInSet,
                                          PRInt32 *aSetSize);

  virtual bool GetAllowsAnonChildAccessibles();

  // ActionAccessible
  virtual PRUint8 ActionCount();
  virtual KeyBinding AccessKey() const;
  virtual KeyBinding KeyboardShortcut() const;

  // Widgets
  virtual bool IsActiveWidget() const;
  virtual bool AreItemsOperable() const;
  virtual nsAccessible* ContainerWidget() const;
};

/**
 * Used for XUL menuseparator element.
 */
class nsXULMenuSeparatorAccessible : public nsXULMenuitemAccessible
{
public:
  nsXULMenuSeparatorAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsIAccessible
  NS_IMETHOD DoAction(PRUint8 index);
  NS_IMETHOD GetActionName(PRUint8 aIndex, nsAString& aName);

  // nsAccessible
  virtual nsresult GetNameInternal(nsAString& aName);
  virtual PRUint32 NativeRole();
  virtual PRUint64 NativeState();

  // ActionAccessible
  virtual PRUint8 ActionCount();
};


/**
 * Used for XUL menupopup and panel.
 */
class nsXULMenupopupAccessible : public nsXULSelectableAccessible
{
public:
  nsXULMenupopupAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsAccessible
  virtual nsresult GetNameInternal(nsAString& aName);
  virtual PRUint32 NativeRole();
  virtual PRUint64 NativeState();

  // Widgets
  virtual bool IsWidget() const;
  virtual bool IsActiveWidget() const;
  virtual bool AreItemsOperable() const;

  virtual nsAccessible* ContainerWidget() const;
};

/**
 * Used for XUL menubar element.
 */
class nsXULMenubarAccessible : public nsAccessibleWrap
{
public:
  nsXULMenubarAccessible(nsIContent *aContent, nsIWeakReference *aShell);

  // nsAccessible
  virtual nsresult GetNameInternal(nsAString& aName);
  virtual PRUint32 NativeRole();
  virtual PRUint64 NativeState();

  // Widget
  virtual bool IsActiveWidget() const;
  virtual bool AreItemsOperable() const;
  virtual nsAccessible* CurrentItem();
};

#endif