axmol/cocos2dx/include/CCIMEDelegate.h

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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****************************************************************************/

#ifndef __CC_IME_DELEGATE_H__
#define __CC_IME_DELEGATE_H__

#include "CCGeometry.h"

NS_CC_BEGIN;

typedef struct
{
    CCRect  begin;              // the soft keyboard rectangle when animatin begin
    CCRect  end;                // the soft keyboard rectangle when animatin end
    float     duration;           // the soft keyboard animation duration
} CCIMEKeyboardNotificationInfo;

/**
@brief	Input method editor delegate.
*/
class CC_DLL CCIMEDelegate
{
public:
    virtual ~CCIMEDelegate();

    virtual bool attachWithIME();
    virtual bool detachWithIME();

protected:
    friend class CCIMEDispatcher;

    /**
    @brief	Decide the delegate instance is ready for receive ime message or not.

    Called by CCIMEDispatcher.
    */
    virtual bool canAttachWithIME() { return false; }
    /**
    @brief	When the delegate detach with IME, this method call by CCIMEDispatcher.
    */
    virtual void didAttachWithIME() {}

    /**
    @brief	Decide the delegate instance can stop receive ime message or not.
    */
    virtual bool canDetachWithIME() { return false; }

    /**
    @brief	When the delegate detach with IME, this method call by CCIMEDispatcher.
    */
    virtual void didDetachWithIME() {}

    /**
    @brief	Called by CCIMEDispatcher when some text input from IME.
    */
    virtual void insertText(const char * text, int len) {}

    /**
    @brief	Called by CCIMEDispatcher when user clicked the backward key.
    */
    virtual void deleteBackward() {}

    /**
    @brief	Called by CCIMEDispatcher for get text which delegate already has.
    */
    virtual const char * getContentText() { return 0; }

    //////////////////////////////////////////////////////////////////////////
    // keyboard show/hide notification
    //////////////////////////////////////////////////////////////////////////
    virtual void keyboardWillShow(CCIMEKeyboardNotificationInfo& info)   {}
    virtual void keyboardDidShow(CCIMEKeyboardNotificationInfo& info)    {}
    virtual void keyboardWillHide(CCIMEKeyboardNotificationInfo& info)   {}
    virtual void keyboardDidHide(CCIMEKeyboardNotificationInfo& info)    {}

protected:
    CCIMEDelegate();
};

NS_CC_END;

#endif	// __CC_IME_DELEGATE_H__