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/*
kopetepassword.h - Kopete Password
Copyright (c) 2004 by Richard Smith <[email protected]>
Kopete (c) 2002-2004 by the Kopete developers <[email protected]>
*************************************************************************
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
*************************************************************************
*/
#ifndef KOPETEPASSWORD_H
#define KOPETEPASSWORD_H
#include <tqobject.h>
#include "kopete_export.h"
namespace TDEWallet { class Wallet; }
class TQPixmap;
/** @internal */
class KopetePasswordGetRequest;
/** @internal */
class KopetePasswordSetRequest;
/** @internal */
class KopetePasswordClearRequest;
namespace Kopete
{
/**
* @author Richard Smith <[email protected]>
*
* The Kopete::Password object is responsible for storing and retrieving a
* password for a plugin or account object.
*
* If the TDEWallet is active, passwords will be stored in it, otherwise, they
* will be stored in the TDEConfig, in a slightly mangled form.
*/
class KOPETE_EXPORT Password : public TQObject
{
TQ_OBJECT
public:
/**
* Create a new Kopete::Password object.
*
* @param configGroup The configuration group to save passwords in.
* @param maxLength The maximum length of the password, or 0 if no maximum exists.
* @param name The name for this object
*
* @deprecated Use the constructor that specifies if a blank password is allowed
*/
explicit Password( const TQString &configGroup, uint maxLength = 0, const char *name = 0 );
/**
* Create a new Kopete::Password object.
*
* @param configGroup The configuration group to save passwords in.
* @param maxLength The maximum length of the password, or 0 if no maximum exists.
* @param allowBlankPassword If this password is allowed to be blank
* @param name The name for this object
*/
explicit Password( const TQString &configGroup, uint maxLength = 0,
bool allowBlankPassword = false, const char *name = 0 );
/**
* Create a shallow copy of this object
*/
Password( Password &other, const char *name = 0 );
~Password();
/**
* Assignment operator for passwords: make this object represent a different password
*/
Password &operator=( Password &other );
/**
* Returns the preferred size for images passed to the retrieve and request functions.
*/
static int preferredImageSize();
/**
* @brief Returns the maximum allowed length of the password, or 0 if there is no maximum.
*/
uint maximumLength();
/**
* Sets the maximum allowed length of the password.
* @param max The new maximum allowed length, or 0 if there is no maximum.
*/
void setMaximumLength( uint max );
/**
* @brief Returns whether the password currently stored by this object is known to be incorrect.
* This flag gets reset whenever the user enters a new password, and is
* expected to be set by the user of this class if it is detected that the
* password the user entered is wrong.
*/
bool isWrong();
/**
* Flag the password as being incorrect.
* @see isWrong
*/
void setWrong( bool bWrong = true );
/**
* Type of password request to perform:
* FromConfigOrUser : get the password from the config file, or from the user
* if no password in config.
* FromUser : always ask the user for a password (ie, if last password was
* wrong or you know the password has changed).
*/
enum PasswordSource { FromConfigOrUser, FromUser };
/**
* @brief Start an asynchronous call to get the password.
* Causes a password entry dialog to appear if the password is not set. Triggers
* a provided slot when done, but not until after this function has returned (you
* don't need to worry about reentrancy or nested event loops).
*
* @param receiver The object to notify when the password request finishes
* @param slot The slot on receiver to call at the end of the request. The signature
* of this function should be slot( const TQString &password ). password will
* be the password if successful, or TQString() if failed.
* @param image The icon to display in the dialog when asking for the password
* @param prompt The message to display to the user, asking for a
* password. Can be any TQt RichText string.
* @param source The source the password is taken from if a wrong or
* invalid password is entered or the password could not be found in the wallet
*/
void request( TQObject *receiver, const char *slot, const TQPixmap &image,
const TQString &prompt, PasswordSource source = FromConfigOrUser );
/**
* @brief Start an asynchronous password request without a prompt
*
* Starts an asynchronous password request. Does not pop up a password entry dialog
* if there is no password.
* @see request(TQObject*,const char*,const TQPixmap&,const TQString&,bool,unsigned int)
* The password given to the provided slot will be NULL if no password could be retrieved for
* some reason, such as the user declining to open the wallet, or no password being found.
*/
void requestWithoutPrompt( TQObject *receiver, const char *slot );
/**
* @return true if the password is remembered, false otherwise.
*
* If it returns false, calling @ref request() will
* pop up an Enter Password window.
*/
bool remembered();
/**
* @return true if you are allowed to have a blank password
*/
bool allowBlankPassword();
/**
* When a password request succeeds, the password is cached. This function
* returns the cached password, if there is one, or TQString() if there
* is not.
*/
TQString cachedValue();
public slots:
/**
* Set the password for this account.
* @param pass If set to TQString(), the password is forgotten unless you
* specified to allow blank passwords. Otherwise, sets the password to
* this value.
*
* Note: this function is asynchronous; changes will not be instant.
*/
void set( const TQString &pass = TQString() );
/**
* Unconditionally clears the stored password
*/
void clear();
private:
void readConfig();
void writeConfig();
class Private;
Private *d;
//TODO: can we rearrange things so these aren't friends?
friend class ::KopetePasswordGetRequest;
friend class ::KopetePasswordSetRequest;
friend class ::KopetePasswordClearRequest;
};
}
/**
* This class is an implementation detail of KopetePassword.
* @internal
* @see KopetePassword
*/
class KopetePasswordRequestBase : public virtual TQObject
{
TQ_OBJECT
signals:
void requestFinished( const TQString &password );
public slots:
virtual void walletReceived( TDEWallet::Wallet *wallet ) = 0;
virtual void slotOkPressed() = 0;
virtual void slotCancelPressed() = 0;
};
#endif
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