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Alf::AlfWidget Class Reference

class Alf::AlfWidget : public Alf::IAlfContainerWidget

The base class for widgets. IAlfWidget IAlfContainerWidget IAlfHostApialfwidgetmodel.lib

Since: S60 ?S60_version Draft IAlfWidget , IAlfAttributeOwner , IAlfContainerWidget , IAlfWidgetControl , IAlfHostAPI , All interfaces returned by the elements associated with the widget's control, All interfaces returned by the layout manager associated widget control , All interfaces returned by the model assoiated with the widget.

Inherits from

Alf::AlfWidget
- Alf::IAlfContainerWidget
  - Alf::IAlfWidget
    - Alf::IAlfInterfaceBase

Public Member Functions
	AlfWidget (const char *, IAlfContainerWidget &, CAlfEnv &)
	AlfWidget (const char *)
	~AlfWidget ()
OSN_IMPORT void	addWidget ( IAlfWidget &)
OSN_IMPORT void	applyLayout ( IAlfLayoutManager &)
OSN_IMPORT CAlfWidgetControl *	control ()
OSN_IMPORT IAlfWidget *	getWidget (int)
OSN_IMPORT int	getWidgetIndex ( IAlfWidget &)
OSN_IMPORT IAlfInterfaceBase *	makeInterface ( AlfWidget *, const IfId &)
T *	makeInterface ( AlfWidget *)
OSN_IMPORT IAlfInterfaceBase *	makeInterface (const IfId &)
OSN_IMPORT IAlfModel *	model ()
OSN_IMPORT IAlfContainerWidget *	parent ()
void	removeWidget (int)
OSN_IMPORT void	removeWidget ( IAlfWidget &)
OSN_IMPORT void	setChildFocus (bool)
OSN_IMPORT void	setControl ( CAlfWidgetControl *, bool)
OSN_IMPORT void	setModel ( IAlfModel *, bool)
OSN_IMPORT void	setPresentation (const char *)
OSN_IMPORT int	widgetCount ()
OSN_IMPORT const char *	widgetName ()

Protected Member Functions
	AlfWidget ()

Private Member Functions
void	addCommonWidgetProperties ()
void	removeReferenceFromControl ()

Inherited Functions
	Alf::IAlfContainerWidget::type()
	Alf::IAlfContainerWidget::~IAlfContainerWidget()
	Alf::IAlfInterfaceBase::makeInterface(IAlfInterfaceBase *)
	Alf::IAlfInterfaceBase::~IAlfInterfaceBase()
	Alf::IAlfWidget::~IAlfWidget()

Private Attributes
auto_ptr< AlfWidgetImpl >	mImpl

Constructor & Destructor Documentation

AlfWidget(const char *, IAlfContainerWidget &, CAlfEnv &)

OSN_IMPORT	AlfWidget	(	const char *	aWidgetName,
			IAlfContainerWidget &	aContainer,
			CAlfEnv &	aEnv
		)

Constructor.

This will create a default control to the widget to enable the widget containment hierarchy from the beginning. User can replace the default control with custom control by calling the setControl() - method.

Exceptions

std::bad_alloc

setControl()

Parameters

const char * aWidgetName	The name of the widget.
IAlfContainerWidget & aContainer	Container widget that will contain this widget.
CAlfEnv & aEnv	Toolkit environment object that will be used to create the default control.

AlfWidget(const char *)

OSN_IMPORT

AlfWidget

(

const char *

aWidgetName

)

Constructor to be used only by view widget. All the other widgets should use the other public constructor to ensure widget hierarchy consistency from start.

Exceptions

std::bad_alloc

AlfWidget(const char*, IAlfContainerWidget&, CAlfEnv&)

Parameters

const char * aWidgetName

The name of the widget.

AlfWidget()

OSN_IMPORT

AlfWidget

(

)

[protected]

The protected constructor.

Since: S60 ?S60_version

~AlfWidget()

OSN_IMPORT

~AlfWidget

(

)

[virtual]

Destructor.

It also takes care that all the child widgets contained by this widget are destroyed correctly, provided that they have been instantiated correctly (e.g. through widget factory) and thus added to the ALF environment (CAlfEnv).

In other words, client code does not need to take care of destroying the child widgets contained by a container widget.

Member Functions Documentation

addCommonWidgetProperties()

void

addCommonWidgetProperties

(

)

[private]

Adds the Common Properties for the widget

Since: S60 ?S60_version

addWidget(IAlfWidget &)

OSN_IMPORT void

addWidget

(

IAlfWidget &

aWidget

)

[virtual]

Adds a child widget to the container.

Parameters

IAlfWidget & aWidget

Child widget to be added to container. return void

applyLayout(IAlfLayoutManager &)

OSN_IMPORT void

applyLayout

(

IAlfLayoutManager &

aLayout

)

[virtual]

Sets the base layout of container widget.

Parameters

IAlfLayoutManager & aLayout

New base layout of container widget. return void

control()

OSN_IMPORT CAlfWidgetControl *

control

(

)

const [virtual]

Constructor. The new widget is left on the cleanup stack.

Since: S60 ?S60_version

getWidget(int)

OSN_IMPORT IAlfWidget *

getWidget

(

int

aIndex

)

const [virtual]

Returns child widget at given index.If index is not found return null.

Parameters

int aIndex

Index of widget to be returned.

getWidgetIndex(IAlfWidget &)

OSN_IMPORT int

getWidgetIndex

(

IAlfWidget &

aWidget

)

const [virtual]

Returns the child index, when given the child widget.

Parameters

IAlfWidget & aWidget

child widget, which index is returned

makeInterface(AlfWidget *, const IfId &)

OSN_IMPORT IAlfInterfaceBase *	makeInterface	(	AlfWidget *	aWidget,
			const IfId &	aType
		)	[static]

Getter for interfaces provided by the widget, the control, or the model.

Since: S60 ?S60_version

Parameters

AlfWidget * aWidget	The widget to get the interface for.
const IfId & aType	The type id of the queried interface.

makeInterface(AlfWidget *)

T *

makeInterface

(

AlfWidget *

aWidget

)

[static]

Template getter for interfaces provided by the widget, the control, or the model. The type of the queried interface is specified by the template parameter.

Since: S60 ?S60_version

Parameters

AlfWidget * aWidget

The widget to get the interface for.

makeInterface(const IfId &)

OSN_IMPORT IAlfInterfaceBase *

makeInterface

(

const IfId &

aType

)

[virtual]

From IAlfInterfaceBase . Getter for interfaces provided by the widget classes. Derived classes should always call the base class method from the overridden MakeInterface.

Since: S60 ?S60_version

Parameters

const IfId & aType

A descriptor to identify the type of the queried interface.

model()

OSN_IMPORT IAlfModel *

model

(

)

[virtual]

Constructor. The new widget is left on the cleanup stack.

Since: S60 ?S60_version

parent()

OSN_IMPORT IAlfContainerWidget *

parent

(

)

const [virtual]

Getter for the parent container. The ownership is not passed.

removeReferenceFromControl()

void

removeReferenceFromControl

(

)

[private]

Removes reference from this widget's control to this widget.

removeWidget(int)

void

removeWidget

(

int

aIndex

)

[virtual]

Removes the child widget from given index.

Parameters

int aIndex

Index from which widget has to be removed. return void

removeWidget(IAlfWidget &)

OSN_IMPORT void

removeWidget

(

IAlfWidget &

aWidget

)

Removes the given widget from this widget's child widget array. Does not modify control connections or control group containment.

Does nothing if the given widget is not found from widget array.

Parameters

IAlfWidget & aWidget

Reference to a widget that is searched from the widget array of this widget and removed of found.

setChildFocus(bool)

OSN_IMPORT void

setChildFocus

(

bool

aFocus

)

[virtual]

Sets/Releases the Focus from child widget of container. Does not set the actual focused status in roster.

Since: S60 ?S60_version

Parameters

bool aFocus

boolean value for focused status return void

setControl(CAlfWidgetControl *, bool)

OSN_IMPORT void	setControl	(	CAlfWidgetControl *	aControl,
			bool	aDeletePreviousControl = true
		)	[virtual]

Sets new widget control to this widget.

Exceptions

osncore::AlfException

Thrown with error code osncore::EInvalidArgument if aControl is alreasy associated with another widget.

IAlfWidget::setControl()

Since: S60 ?S60_version

Parameters

CAlfWidgetControl * aControl	Control to be set to the widget.
bool aDeletePreviousControl = true	If true, the previous widget control is destroyed.

setModel(IAlfModel *, bool)

OSN_IMPORT void	setModel	(	IAlfModel *	aModel,
			bool	aTakeOwnerShip = true
		)	[virtual]

Sets the model for the Widget.

Since: S60 ?S60_version

Parameters

IAlfModel * aModel	Model to be set to this widget.
bool aTakeOwnerShip = true

setPresentation(const char *)

OSN_IMPORT void

setPresentation

(

const char *

aFilePath

)

[virtual]

Sets the presentation for the widget using presentation XML file. Destroys any existing presentation.

Exceptions

AlfWidgetException	if no visualization node available in Presentation XML or if no control is associated with the widget.
bad_alloc

Since: S60 ?S60_version

Parameters

const char * aFilePath

Path to XML file describing the presentation of the widget. Not Owned.

widgetCount()

OSN_IMPORT int

widgetCount

(

)

const [virtual]

Returns total number of widgets contained by this container.

widgetName()

OSN_IMPORT const char *

widgetName

(

)

const [virtual]

Constructor. The new widget is left on the cleanup stack.

Since: S60 ?S60_version

Member Data Documentation

auto_ptr< AlfWidgetImpl > mImpl

auto_ptr< AlfWidgetImpl >

mImpl

[private]