widget/public/nsIKBStateControl.h
author mats.palmgren@bredband.net
Thu, 17 May 2007 20:49:14 -0700
changeset 1585 633138510b5ae5e25a3bfe66d2db572dc361d448
parent 539 af6c1f09fe550b7e6d8f47eeffc7d17cbae0997d
child 2475 0a17dc8ef5f66f61a8153af03125189a95e29f93
permissions -rw-r--r--
Move nsIDocShellTreeItem::childOffset to nsDocShell and remove all uses except internally by nsDocShell (it should be removed eventually). b=376562 r=Olli.Pettay sr=bzbarsky

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Contributor(s):
 *   Frank Tang <ftang@netscape.com>
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#ifndef nsIKBStateControl_h__
#define nsIKBStateControl_h__

#include "nsISupports.h"

// {BC33E975-C433-4df5-B4BA-041CDE6D1A17}
#define NS_IKBSTATECONTROL_IID \
{ 0xbc33e975, 0xc433, 0x4df5, \
{ 0xb4, 0xba, 0x04, 0x1c, 0xde, 0x6d, 0x1a, 0x17 } }


#if defined(XP_MACOSX)
/*
 * If the all applications use same context for IME, i.e., When gecko changes
 * the state of IME, the same changes can be on other processes.
 * Then, NS_KBSC_USE_SHARED_CONTEXT should be defined.
 */
#define NS_KBSC_USE_SHARED_CONTEXT 1
#endif

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

  public:

    NS_DECLARE_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;

    /*
     * IME enabled states, the aState value of SetIMEEnabled/GetIMEEnabled
     * should be one value of following values.
     */
    enum {
      /*
       * 'Disabled' means the user cannot use IME. So, the open state should be
       * 'closed' during 'disabled'.
       */
      IME_STATUS_DISABLED = 0,
      /*
       * 'Enabled' means the user can use IME.
       */
      IME_STATUS_ENABLED = 1,
      /*
       * 'Password' state is a special case for the password editors.
       * E.g., on mac, the password editors should disable the non-Roman
       * keyboard layouts at getting focus. Thus, the password editor may have
       * special rules on some platforms.
       */
      IME_STATUS_PASSWORD = 2
    };

    /*
     * Set the state to 'Enabled' or 'Disabled' or 'Password'.
     */
    NS_IMETHOD SetIMEEnabled(PRUint32 aState) = 0;

    /*
     * Get IME is 'Enabled' or 'Disabled' or 'Password'.
     */
    NS_IMETHOD GetIMEEnabled(PRUint32* aState) = 0;

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

NS_DEFINE_STATIC_IID_ACCESSOR(nsIKBStateControl, NS_IKBSTATECONTROL_IID)

#endif // nsIKBStateControl_h__