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nsIRadioControlElement.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

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 * the Initial Developer. All Rights Reserved.
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#ifndef nsIRadioControlElement_h___
#define nsIRadioControlElement_h___

#include "nsISupports.h"
#include "nsIRadioGroupContainer.h"
class nsAString;
class nsIForm;

// IID for the nsIRadioControl interface
#define NS_IRADIOCONTROLELEMENT_IID \
{ 0x647dff84, 0x1dd2, 0x11b2, \
    { 0x95, 0xcf, 0xe5, 0x01, 0xa8, 0x54, 0xa6, 0x40 } }

/**
 * This interface is used for the text control frame to store its value away
 * into the content.
 */
00056 class nsIRadioControlElement : public nsISupports {
public:

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IRADIOCONTROLELEMENT_IID)

  /**
   * Set the radio button checked, but don't do any extra checks and don't
   * trigger "value changed".  This is for experts only.  Do not try this
   * at home.  Well, OK, try it at home, but not late at night.
   */
  NS_IMETHOD RadioSetChecked(PRBool aNotify) = 0;

  /**
   * Let this radio button know that the radio group's "checked" property has
   * been changed by JavaScript or by the user
   *
   * @param aCheckedChanged whether the checked property has been changed.
   * @param aOnlyOnThisRadioButton set to TRUE to only set the property only on
   *        the radio button in question; otherwise it will set the property on
   *        all other radio buttons in its group just to be sure they are
   *        consistent.
   */
  NS_IMETHOD SetCheckedChangedInternal(PRBool aCheckedChanged) = 0;

  /**
   * Let an entire radio group know that it's "checked" property has been
   * changed by JS or by the user (calls SetCheckedChangedInternal multiple
   * times via a visitor)
   *
   * @param aCheckedChanged whether the checked property has been changed.
   */
  NS_IMETHOD SetCheckedChanged(PRBool aCheckedChanged) = 0;

  /**
   * Find out whether this radio group's "checked" property has been changed by
   * JavaScript or by the user
   *
   * @param aCheckedChanged out param, whether the checked property has been
   *        changed.
   */
  NS_IMETHOD GetCheckedChanged(PRBool* aCheckedChanged) = 0;

  /**
   * Let this radio button know that state has been changed such that it has
   * been added to a group.
   */
  NS_IMETHOD AddedToRadioGroup(PRBool aNotify = PR_TRUE) = 0;

  /**
   * Let this radio button know that it is about to be removed from the radio
   * group it is currently in (the relevant properties should not have changed
   * yet).
   */
  NS_IMETHOD WillRemoveFromRadioGroup() = 0;

  /**
   * Get the radio group container for this radio button
   * @return the radio group container (or null if no container)
   */
  virtual already_AddRefed<nsIRadioGroupContainer> GetRadioGroupContainer() = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIRadioControlElement,
                              NS_IRADIOCONTROLELEMENT_IID)

#endif // nsIRadioControlElement_h___

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