RetroZilla/widget/public/nsIKBStateControl.h

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 * The Original Code is mozilla.org code.
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 * Contributor(s):
 *   Frank Tang <ftang@netscape.com>
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#ifndef nsIKBStateControl_h__
#define nsIKBStateControl_h__

#include "nsISupports.h"

// {6A9AC731-988A-11d3-86CC-005004832142}
#define NS_IKBSTATECONTROL_IID \
{ 0x6a9ac731, 0x988a, 0x11d3, \
{ 0x86, 0xcc, 0x0, 0x50, 0x4, 0x83, 0x21, 0x42 } }


/**
 * interface to control keyboard input state
 */
class nsIKBStateControl : public nsISupports {

  public:

    NS_DEFINE_STATIC_IID_ACCESSOR(NS_IKBSTATECONTROL_IID)

    /*
     * Force Input Method Editor to commit the uncommited input
     */
    NS_IMETHOD ResetInputState()=0;

    /*
     * Following methods relates to IME 'Opened'/'Closed' state.
     * 'Opened' means the user can input any character. I.e., users can input Japanese  
     * and other characters. The user can change the state to 'Closed'.
     * 'Closed' means the user can input ASCII characters only. This is the same as a
     * non-IME environment. The user can change the state to 'Opened'.
     * For more information is here.
     * http://bugzilla.mozilla.org/show_bug.cgi?id=16940#c48
     */

    /*
     * Set the state to 'Opened' or 'Closed'.
     * If aState is TRUE, IME open state is set to 'Opened'.
     * If aState is FALSE, set to 'Closed'.
     */
    NS_IMETHOD SetIMEOpenState(PRBool aState) = 0;

    /*
     * Get IME is 'Opened' or 'Closed'.
     * If IME is 'Opened', aState is set PR_TRUE.
     * If IME is 'Closed', aState is set PR_FALSE.
     */
    NS_IMETHOD GetIMEOpenState(PRBool* aState) = 0;

    /*
     * Destruct and don't commit the IME composition string.
     */
    NS_IMETHOD CancelIMEComposition() = 0;
};

#endif // nsIKBStateControl_h__