Controller Class Reference

Class for keeping app state. More...

#include <controller.h>

Inheritance diagram for Controller:

Collaboration diagram for Controller:

Public Slots
virtual void	exitApp ()
virtual void	displayAboutBox ()
virtual void	displayFront ()
virtual void	changeProfilePasswd ()
virtual void	createProfile ()
virtual void	deleteProfile ()
virtual void	selectProfile ()
virtual void	displaySettings ()
virtual void	displayStatus ()
virtual void	displaySearch ()
virtual void	handleError (MController::CAErrorSituation aError, const QString &aExplanation)
void	notifyOfContentReceived (const Hash &aHashOfContent, const ProtocolItemType aTypeOfReceivedContent)
void	notifyOfContentReceived (const Hash &aHashOfContent, const Hash &aHashOfClassification, const ProtocolItemType aTypeOfReceivedContent)
void	notifyOfContentNotReceived (const Hash &aHashOfContent, const ProtocolItemType aTypeOfNotReceivdContent)
virtual void	storePrivateDataOfSelectedProfile ()
virtual void	reStorePrivateDataOfSelectedProfile ()
virtual bool	isContactInContactList (const Hash &aFingerPrint) const
virtual QString	displayableNameForProfile (const Hash &aProfileFingerPrint) const
virtual void	offerDisplayNameForProfile (const Hash &aProfileFingerPrint, const QString &aDisplayName, const bool iUpdatePersistenStorage=false)
void	sendProfileUpdateQuery (const Hash &aProfileFingerPrint, const Hash &aProfileNodeFingerPrint=KNullHash)
Public Slots inherited from MController
virtual void	exitApp ()=0
virtual void	displayAboutBox ()=0
virtual void	displayFront ()=0
virtual void	handleError (MController::CAErrorSituation aError, const QString &aExplanation)=0
virtual void	storePrivateDataOfSelectedProfile ()=0
virtual void	reStorePrivateDataOfSelectedProfile ()=0
virtual bool	isContactInContactList (const Hash &aFingerPrint) const =0
virtual QString	displayableNameForProfile (const Hash &aProfileFingerPrint) const =0
virtual void	offerDisplayNameForProfile (const Hash &aProfileFingerPrint, const QString &aDisplayName, const bool iUpdatePersistenStorage=false)=0

Signals
void	userProfileSelected (const Hash &aProfile)
void	waitDialogToBeDismissed ()

Public Member Functions
	Controller (QApplication &app)
	~Controller ()
virtual void	startRetrievingContent (NetworkRequestExecutor::NetworkRequestQueueItem aReq, bool aIsBackgroundDl)
virtual void	userInterfaceAction (CAUserInterfaceRequest aRequest, const Hash &aHashConcerned=KNullHash, const Hash &aFetchFromNode=KNullHash)
virtual void	hideUI ()
virtual void	showUI ()
virtual void	setProfileInUse (const Hash &aProfileHash)
virtual const Hash &	profileInUse ()
virtual void	setContentKeyPasswd (QString aPasswd)
virtual QString	contentKeyPasswd () const
virtual Node &	getNode () const
virtual NetworkListener *	networkListener () const
virtual Model &	model () const

Private Member Functions
void	createMenus ()
int	createPidFile ()
void	deletePidFile ()

Private Attributes
QMainWindow *	iWin
FrontWidget *	iCurrentWidget
QApplication &	iApp
QBoxLayout *	iLayout
QMenu *	iFileMenu
QAction *	iExitAct
QAction *	iAboutAct
QAction *	iPwdChangeAct
QAction *	iProfileDeleteAct
QAction *	iProfileCreateAct
QAction *	iProfileSelectAct
QAction *	iDisplaySettingsAct
QAction *	iDisplayStatusAct
QAction *	iDisplaySearchAct
Node *	iNode
Model *	iModel
NetworkListener *	iListener
NetworkConnectorEngine *	iNetEngine
QString	iContentKeyPasswd
Hash	iProfileHash
PublishingEngine *	iPubEngine
RetrievalEngine *	iRetrievalEngine
ProtocolItemType	iTypeOfObjectBeingWaitedFor
Hash	iHashOfObjectBeingWaitedFor
Hash	iHashOfProfileCommentBeingWaitedFor
Hash	iNodeForCommentBeingWaitedFor
QMap< Hash, QString >	iHashDisplaynameMapping

Additional Inherited Members
Public Types inherited from MController
enum	CAErrorSituation {   OwnCertNotFound, DataBaseNotMountable, BadPassword, DbTransactionError,   ContentEncryptionError, FileOperationError }
enum	CAUserInterfaceRequest { ViewProfileDetails, ViewCa, ViewProfileComment }

Detailed Description

Class for keeping app state.

C of MVC-pattern is considered here. UI events are routed via this class and this implements scheduling of events so that things happen in correct order.

Constructor & Destructor Documentation

Controller::Controller

(

QApplication &

app

)

constructor

Controller::~Controller

(

)

Destructor

Member Function Documentation

virtual void Controller::changeProfilePasswd ( )

virtualslot

name says it all. initiates UI sequence

virtual QString Controller::contentKeyPasswd ( ) const

virtual

method for getting passwd of private content keys previously set, see method Controller::setContentKeyPasswd

Implements MController.

void Controller::createMenus ( )

private

menus here

int Controller::createPidFile ( )

private

virtual void Controller::createProfile ( )

virtualslot

Initiates UI sequence for new profile

void Controller::deletePidFile ( )

private

leave a mark to filesystem about instance

virtual void Controller::deleteProfile ( )

virtualslot

Initiates UI sequence for deleting profile

virtual QString Controller::displayableNameForProfile ( const Hash &  aProfileFingerPrint ) const

virtualslot

method for producing a displayable version of a profile. in practice this utilitizes the contacts of the selected profile and a cache that is collected from private messages, ads, profile comments and profiles

virtual void Controller::displayAboutBox ( )

virtualslot

bragging

virtual void Controller::displayFront ( )

virtualslot

this initializes the "normal" display

virtual void Controller::displaySearch ( )

virtualslot

Slot for displaying search dialog

virtual void Controller::displaySettings ( )

virtualslot

Slot for displaying node settings

virtual void Controller::displayStatus ( )

virtualslot

Slot for displaying network status

virtual void Controller::exitApp ( )

virtualslot

quitting

virtual Node& Controller::getNode ( ) const

virtual

Method for node ; this may be changed during startup-phase but not after that

Implements MController.

virtual void Controller::handleError ( MController::CAErrorSituation  aError, const QString &  aExplanation  )

virtualslot

Method for handling errors inside application.

Parameters

aError	Reason for error call, from error enum above
aExplanation	NULL or human-readable description about what went wrong.

virtual void Controller::hideUI ( )

virtual

method for hiding UI

Implements MController.

virtual bool Controller::isContactInContactList ( const Hash &  aFingerPrint ) const

virtualslot

method for checking if a profile is found from contact list of selected user

virtual Model& Controller::model ( ) const

virtual

method for getting datamodel

Implements MController.

virtual NetworkListener* Controller::networkListener ( ) const

virtual

method for network listener ; it is parent of all connections, also the outgoing

Implements MController.

void Controller::notifyOfContentNotReceived ( const Hash &  aHashOfContent, const ProtocolItemType  aTypeOfNotReceivdContent  )

slot

This is receiving slot of signals sent from retrieval engine; when we try to receive content and we do not get any, this notifies user that time-out is due

Parameters

aHashOfContent	item that was requested
aTypeOfNotReceivdContent	item type requested

void Controller::notifyOfContentReceived ( const Hash &  aHashOfContent, const ProtocolItemType  aTypeOfReceivedContent  )

slot

This is receiving slot of signals sent from actual content handlers ; when we receive new content, this method is hit, reason for this is that we may be waiting for specific content somewhere

Parameters

aHashOfContent	item that was requested
aTypeOfReceivedContent	item type requested

void Controller::notifyOfContentReceived ( const Hash &  aHashOfContent, const Hash &  aHashOfClassification, const ProtocolItemType  aTypeOfReceivedContent  )

slot

This is receiving slot of signals sent from actual content handlers ; when we receive new content, this method is hit, reason for this is that we may be waiting for specific content somewhere. This overload is mostly hit by classified ads.

Parameters

aHashOfContent	item that was requested
aHashOfClassification	of item that was requested
aTypeOfReceivedContent	item type requested

virtual void Controller::offerDisplayNameForProfile ( const Hash &  aProfileFingerPrint, const QString &  aDisplayName, const bool  iUpdatePersistenStorage = false  )

virtualslot

method for keeping profile hash<->displayname relation up to date. this is called when display names are seen in profiles, ads, private messages etc.

virtual const Hash& Controller::profileInUse ( )

virtual

method getting user profile in use.

Implements MController.

virtual void Controller::reStorePrivateDataOfSelectedProfile ( )

virtualslot

method for restoring private data of profile currently in use. shall be called after new profile is selected in frontwidget.

virtual void Controller::selectProfile ( )

virtualslot

Initiates UI sequence for selecting profile

void Controller::sendProfileUpdateQuery ( const Hash &  aProfileFingerPrint, const Hash &  aProfileNodeFingerPrint = KNullHash  )

slot

method for sending a poll around network regarding possible update for a profile and possible addition of comments about given profile.

datamodel should not be locked when this is called.

in practice this is called after user selects a profile to be viewed ; it could be called periodically too for selected profiles..

Parameters

aProfileFingerPrint	is fingerprint of the profile concerned.
aProfileNodeFingerPrint	fingerprint of node that is suspected to be the node where profile is published from. this is naturally good candidate for sending the query.

virtual void Controller::setContentKeyPasswd ( QString  aPasswd )

virtual

method for setting passwd used to open private content encryption rsa key. this password is stored in controller and is then used by content-open/sign-operations when crypto lib asks for password.

Implements MController.

virtual void Controller::setProfileInUse ( const Hash &  aProfileHash )

virtual

method selecting user profile in use.

Implements MController.

virtual void Controller::showUI ( )

virtual

method for showing UI

Implements MController.

virtual void Controller::startRetrievingContent ( NetworkRequestExecutor::NetworkRequestQueueItem  aReq, bool  aIsBackgroundDl  )

virtual

method that starts actions regarding content fetch from network

Parameters

aReq	specifies the content,at least iRequestType and iRequestedItem need to be there
aIsBackgroundDl	is true if the retrieval may be queued into background as a low-priority item

Implements MController.

virtual void Controller::storePrivateDataOfSelectedProfile ( )

virtualslot

Method for persisting profile private data inside datamodel. Tnis is supposed to be called every time after private data changes.

lock the datamodel before calling this method

virtual void Controller::userInterfaceAction ( CAUserInterfaceRequest  aRequest, const Hash &  aHashConcerned = KNullHash, const Hash &  aFetchFromNode = KNullHash  )

virtual

From MController.

Method for requesting different things to take place in UI. controller mostly routes these to FrontWidget but other actions may be in order too..

Parameters

aRequest	users orders
aHashConcerned	possible hash parameter ; can be null hash if action is not about specific hash
aFetchFromNode	possible node hash parameter ; if concerning item is not found from local storage, try to fetch it from given node ; is KNullHash, then just do fetch using normal algorithm.

Returns

none

Implements MController.

void Controller::userProfileSelected ( const Hash &  aProfile )

signal

void Controller::waitDialogToBeDismissed ( )

signal

used for signalling possible wait dialog about dismissal

Member Data Documentation

QAction* Controller::iAboutAct

private

QApplication& Controller::iApp

private

QString Controller::iContentKeyPasswd

private

FrontWidget* Controller::iCurrentWidget

private

normally points to "frontwidget" instance

QAction* Controller::iDisplaySearchAct

private

QAction* Controller::iDisplaySettingsAct

private

QAction* Controller::iDisplayStatusAct

private

QAction* Controller::iExitAct

private

QMenu* Controller::iFileMenu

private

QMap<Hash,QString> Controller::iHashDisplaynameMapping

private

profile hash<->display_name mapping

Hash Controller::iHashOfObjectBeingWaitedFor

private

hash of object that user needs to wait.

Hash Controller::iHashOfProfileCommentBeingWaitedFor

private

hash of profile comment that user needs to wait. This is used in two-stage fetch process of profile comment where the profile may need to be retrieved first, then the comment: we store there the profile comment hash for duration of profile fetch

QBoxLayout* Controller::iLayout

private

NetworkListener* Controller::iListener

private

Incoming connections handler, for ipv4

Model* Controller::iModel

private

data storage animal

NetworkConnectorEngine* Controller::iNetEngine

private

Outgoing connections handler

Node* Controller::iNode

private

our network presence object, there is single instance

Hash Controller::iNodeForCommentBeingWaitedFor

private

Node where to ask for profile comment once profile has been fetched

QAction* Controller::iProfileCreateAct

private

QAction* Controller::iProfileDeleteAct

private

Hash Controller::iProfileHash

private

passwd used to protect profile private RSA key fingerprint of profile currently in use

QAction* Controller::iProfileSelectAct

private

PublishingEngine* Controller::iPubEngine

private

Logic for handling content publish

QAction* Controller::iPwdChangeAct

private

RetrievalEngine* Controller::iRetrievalEngine

private

Logic for fetcing stuff from other nodes

ProtocolItemType Controller::iTypeOfObjectBeingWaitedFor

private

if user requests for item that we do not have, lets put a wait dialog in place and start wait for the object to appear from network. in order to properly dismiss the dialog, have here type (and later hash) of the objects that we're waiting for

QMainWindow* Controller::iWin

private

remove mark from filesystem about instance

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The documentation for this class was generated from the following file:

• /tmp/classified_ads/controller.h