View container class. More...

#include <ilviews/gadgets/gadcont.h>

Inheritance diagram for IlvGadgetContainer:

Public Member Functions
	IlvGadgetContainer (IlvDisplay display, const char name, const char *title, const IlvRect &rect, IlBoolean useacc=IlFalse, IlBoolean visible=IlTrue)
	Constructor. More...

	IlvGadgetContainer (IlvDisplay display, const char name, const char *title, const IlvRect &rect, IlUInt properties, IlBoolean useacc=IlFalse, IlBoolean visible=IlTrue, IlvSystemView transientFor=0)
	Constructor. More...

	IlvGadgetContainer (IlvAbstractView *parent, const IlvRect &rect, IlBoolean useacc=IlFalse, IlBoolean visible=IlTrue)
	Constructor. More...

	IlvGadgetContainer (IlvDisplay *display, IlvSystemView parent, const IlvRect &rect, IlBoolean useacc=IlFalse, IlBoolean visible=IlTrue)
	Constructor. More...

	IlvGadgetContainer (IlvDisplay *display, IlvSystemView window, IlBoolean useacc=IlFalse)
	Constructor. More...

virtual IlBoolean	allowFocus (IlBoolean value)
	Specifies whether the container manages the focus. More...

virtual void	applyResize (IlFloat sx, IlFloat sy, IlBoolean redraw=IlTrue)
	Is called to carry out the resize events applying to the gadget container. More...

IlBoolean	autoResize (IlBoolean a)
	Sets the auto resize mode of the gadget container. More...

IlvButton *	getDefaultButton () const
	Returns the default button of the gadget container. More...

virtual IlvGraphic *	getFirstFocusGraphic () const
	Returns the first object that receives the focus in this container. More...

virtual IlvGraphic *	getFocus () const
	Returns the object that has the keyboard focus in the gadget container. More...

virtual IlvGraphic *	getGrab () const
	Returns the object that is currently grabbing events in the container. More...

virtual IlvGraphic *	getLastFocusGraphic () const
	Returns the last object that receives the focus in this container. More...

IlvLookFeelHandler *	getLookFeelHandler () const
	Returns the look and feel handler associated with this container. More...

virtual IlvGraphic *	getNextFocusGraphic (IlvGraphic *object) const
	Returns the next object that will receive the focus after the specified object. More...

IlvGraphic *	getOverriddenFocus () const
	Returns the object that will receive the focus after calling `setFocus`. More...

virtual IlvGraphic *	getPreviousFocusGraphic (IlvGraphic *object) const
	Returns the previous object that received the focus before the specified object. More...

IlBoolean	isAutoResizing () const
	Indicates whether the gadget container gets resized when loading a file. More...

virtual IlBoolean	isFocusAllowed () const
	Indicates whether the focus is allowed in the container. More...

virtual void	moveFocusAfter (IlBoolean redraw=IlTrue)
	Is called to find the next focusable object. More...

virtual void	moveFocusBefore (IlBoolean redraw=IlTrue)
	Is called to find the previous focusable object. More...

void	overrideFocus (IlvGraphic *obj)
	Sets the object that will receive the focus after calling `setFocus`. More...

virtual void	removeGrab ()
	Cancels the grabbing settings defined with `setGrab`. More...

void	setDefaultButton (IlvButton *, IlBoolean redraw=IlTrue)
	Sets the default button of the gadget container. More...

virtual void	setFocus (IlvGraphic *graphic=0, IlBoolean redraw=IlTrue)
	Sets the focus to the specified object of the gadget container. More...

virtual void	setGrab (IlvGraphic *object)
	Sets the specified object as the grabbing object. More...

void	setLookFeelHandler (IlvLookFeelHandler *lfh)
	Sets the look and feel handler of this container. More...

Detailed Description

View container class.

Library: ilvgadgt

IlvGadgetContainer is a predefined subtype of the IlvContainer class used for storing, displaying, and manipulating gadgets. It has special member functions for handling the keyboard focus, the grabbing of an object (so that the object interactor attached to the grabbing object receives every event). This class also manages the attachments of objects to the container. The keyboard focus determines which gadget must receive keyboard events when the view gets the focus. The IlvGadgetContainer class features a keyboard navigation mechanism that lets the end user give the keyboard focus to any gadget by cycling through the list of objects using the Tab key (and sometimes the arrow keys). The IlvGadgetContainer class determines which gadget will be the next to get the keyboard focus at each step of keyboard navigation; the default algorithm is based on the geometry of the gadgets (from left to right and from top to bottom). The programmer can force the container to use a given order in keyboard navigation, that is, define its own focus chain.

See Also: IlvGadget, IlvDialog

Constructor & Destructor Documentation

IlvGadgetContainer::IlvGadgetContainer	(	IlvDisplay *	display,
		const char *	name,
		const char *	title,
		const IlvRect &	rect,
		IlBoolean	useacc = `IlFalse`,
		IlBoolean	visible = `IlTrue`
	)

Constructor.

Initializes a new instance of the IlvGadgetContainer class as a top view.

Parameters

display	The connection to the display.
name	The name of the gadget container.
title	The title of the gadget container.
rect	The size and position of the gadget container.
useacc	A Boolean value specifying whether the gadget container should install the default keyboard accelerators.
visible	A Boolean value specifying whether the gadget container should be visible.

IlvGadgetContainer::IlvGadgetContainer	(	IlvDisplay *	display,
		const char *	name,
		const char *	title,
		const IlvRect &	rect,
		IlUInt	properties,
		IlBoolean	useacc = `IlFalse`,
		IlBoolean	visible = `IlTrue`,
		IlvSystemView	transientFor = `0`
	)

Constructor.

Initializes a new instance of the IlvGadgetContainer class as a top view.

Parameters

display	The connection to the display.
name	The name of the gadget container.
title	The title of the gadget container.
rect	The size and position of the gadget container.
properties	The properties of the gadget container. For more details, see the `IlvView` constructors.
useacc	A Boolean value specifying whether the gadget container should install the default keyboard accelerators.
visible	A Boolean value specifying whether the gadget container should be visible.
transientFor	A system view for which the gadget container is transient. For more details, see the `IlvView` constructors.

IlvGadgetContainer::IlvGadgetContainer	(	IlvAbstractView *	parent,
		const IlvRect &	rect,
		IlBoolean	useacc = `IlFalse`,
		IlBoolean	visible = `IlTrue`
	)

Constructor.

Initializes a new instance of the IlvGadgetContainer class as a child view of parent.

Parameters

parent	The parent view of the gadget container.
rect	The size and position of the gadget container.
useacc	A Boolean value specifying whether the gadget container should install the default keyboard accelerators.
visible	A Boolean value specifying whether the gadget container should be visible.

IlvGadgetContainer::IlvGadgetContainer	(	IlvDisplay *	display,
		IlvSystemView	parent,
		const IlvRect &	rect,
		IlBoolean	useacc = `IlFalse`,
		IlBoolean	visible = `IlTrue`
	)

Constructor.

Initializes a new instance of the IlvGadgetContainer class as a child view of the system view specified by parent.

Parameters

display	The connection to the display.
parent	The parent view of the gadget container.
rect	The size and position of the gadget container.
useacc	A Boolean value specifying whether the gadget container should install the default keyboard accelerators.
visible	A Boolean value specifying whether the gadget container should be visible.

IlvGadgetContainer::IlvGadgetContainer	(	IlvDisplay *	display,
		IlvSystemView	window,
		IlBoolean	useacc = `IlFalse`
	)

Constructor.

Initializes a new instance of the IlvGadgetContainer class mapped to the existing system view specified by parent.

Parameters

display	The connection to the display.
window	The system view to which the gadget container will be mapped.
useacc	A Boolean value specifying whether the gadget container should install the default keyboard accelerators.

Member Function Documentation

virtual IlBoolean IlvGadgetContainer::allowFocus ( IlBoolean value )

virtual

Specifies whether the container manages the focus.

Parameters

value A Boolean value specifying whether the container manages the focus (IlTrue).

See Also: isFocusAllowed, setFocus

virtual void IlvGadgetContainer::applyResize	(	IlFloat	sx,
		IlFloat	sy,
		IlBoolean	redraw = `IlTrue`
	)

virtual

Is called to carry out the resize events applying to the gadget container.

This method is called internally to carry out any resize events applying to the view, and to manage the objects changes according to their attachments. It deals with the old Rogue Wave Views attachment model. If you want to use the new one, see the IlvGraphicHolder::attach method.

Parameters

sx	The scale factor that applies to the container width.
sy	The scale factor that applies to the container height.
redraw	A Boolean value specifying whether the container should be redrawn.

See Also: IlvSetAttachment

IlBoolean IlvGadgetContainer::autoResize ( IlBoolean a )

Sets the auto resize mode of the gadget container.

Parameters

value A Boolean value specifying whether the gadget container should be resized automatically when data containing size information is loaded.

Returns: IlTrue if the container should be resized automatically and IlFalse otherwise.

See Also: isAutoResizing

IlvButton* IlvGadgetContainer::getDefaultButton ( ) const

Returns the default button of the gadget container.

Returns: A pointer to the default button of the gadget container, or 0 if this gadget container has no default button.

See Also: IlvGadgetContainer::setDefaultButton

virtual IlvGraphic* IlvGadgetContainer::getFirstFocusGraphic ( ) const

virtual

Returns the first object that receives the focus in this container.

Warning: [note] This member function links the objects using their names. Redefining them would break this mechanism.

Returns: The first object that receives the focus in this container. The object must satisfy the conditions listed in the description of IlvGadgetContainer::getNextFocusGraphic.

See Also: getPreviousFocusGraphic, getLastFocusGraphic

virtual IlvGraphic* IlvGadgetContainer::getFocus ( ) const

virtual

Returns the object that has the keyboard focus in the gadget container.

Returns: The object that has the keyboard focus in this gadget container or 0 if no object has the focus.

See Also: setFocus, allowFocus

virtual IlvGraphic* IlvGadgetContainer::getGrab ( ) const

virtual

Returns the object that is currently grabbing events in the container.

Returns: The object that is currently grabbing events in this container, or 0 if there is no grabbing object in this container.

See Also: setGrab, removeGrab

virtual IlvGraphic* IlvGadgetContainer::getLastFocusGraphic ( ) const

virtual

Returns the last object that receives the focus in this container.

Warning: [note] This member function links the objects using their names. Redefining them would break this mechanism.

Returns: The last object that receives the focus in this container. The object must satisfy the conditions listed in the description of IlvGadgetContainer::getNextFocusGraphic.

See Also: getNextFocusGraphic, getFirstFocusGraphic

IlvLookFeelHandler* IlvGadgetContainer::getLookFeelHandler ( ) const

Returns the look and feel handler associated with this container.

Returns: The look and feel handler associated with this container.

virtual IlvGraphic* IlvGadgetContainer::getNextFocusGraphic ( IlvGraphic * object ) const

virtual

Returns the next object that will receive the focus after the specified object.

By default, the focus chain goes from left to right and from top to bottom. The method looks for an object that satisfies the following conditions:

Is visible (method IlvContainer::isVisible)
Is sensitive (method IlvGraphic::isSensitive)
Has an associated interactor (or is active and focusable if the object is a gadget)

The search is performed down the focus chain, starting after object.

Warning: [note] This member function links the objects using their names. Redefining them would break this mechanism.

Parameters

object The graphic object.

Returns: The object that will receive the focus after object. The method returns IlvGadgetContainer::getFirstFocusGraphic when object is 0. If no valid object is found, the method returns 0.

See Also: getPreviousFocusGraphic, getFocus, getLastFocusGraphic

IlvGraphic* IlvGadgetContainer::getOverriddenFocus ( ) const

Returns the object that will receive the focus after calling setFocus.

Returns: The object that will receive the focus after calling setFocus.

See Also: overrideFocus, setFocus

virtual IlvGraphic* IlvGadgetContainer::getPreviousFocusGraphic ( IlvGraphic * object ) const

virtual

Returns the previous object that received the focus before the specified object.

By default, the focus chain goes from left to right and from top to bottom. The method looks for an object that satisfies the following conditions:

Is visible (method IlvContainer::isVisible)
Is sensitive (method IlvGraphic::isSensitive)
Has an associated interactor (or is active and focusable if the object is a gadget)

The search is performed up the focus chain, starting before object.

Warning: [note] This member function links the objects using their names. Redefining them would break this mechanism.

Parameters

object The graphic object.

Returns: The object that had the focus before object. The method returns IlvGadgetContainer::getFirstFocusGraphic when object is 0. If no valid object is found, the method returns 0.

See Also: getNextFocusGraphic, getFocus, getFirstFocusGraphic

IlBoolean IlvGadgetContainer::isAutoResizing ( ) const

Indicates whether the gadget container gets resized when loading a file.

Returns: IlTrue if this gadget container gets resized automatically when data containing size information is loaded. Otherwise, the container keeps its original dimensions.

See Also: autoResize

virtual IlBoolean IlvGadgetContainer::isFocusAllowed ( ) const

virtual

Indicates whether the focus is allowed in the container.

Returns: IlTrue if this gadget container handles the focus for the objects it stores and IlFalse otherwise.

See Also: setFocus, allowFocus

virtual void IlvGadgetContainer::moveFocusAfter ( IlBoolean redraw = IlTrue )

virtual

Is called to find the next focusable object.

Calls IlvGadgetContainer::getNextFocusGraphic with the object currently having the focus to get the next valid object in the focus chain, then calls IlvGadgetContainer::setFocus on it. If getNextFocusGraphic returns 0, the result of IlvGadgetContainer::getFirstFocusGraphic is used instead.

Parameters

redraw A Boolean value specifying whether the gadget container should be redrawn.

See Also: moveFocusBefore, getFirstFocusGraphic, getFocus

virtual void IlvGadgetContainer::moveFocusBefore ( IlBoolean redraw = IlTrue )

virtual

Is called to find the previous focusable object.

Calls IlvGadgetContainer::getPreviousFocusGraphic with the object currently having the focus to get the previous valid object in the focus chain, then calls IlvGadgetContainer::setFocus on it. If getPreviousFocusGraphic returns 0, the result of IlvGadgetContainer::getLastFocusGraphic is used instead.

Parameters

redraw A Boolean value specifying whether the gadget container should be redrawn.

See Also: moveFocusAfter, getLastFocusGraphic, getFocus

void IlvGadgetContainer::overrideFocus ( IlvGraphic * obj )

Sets the object that will receive the focus after calling setFocus.

Has no effect if it is not called from a Focus Out callback or from the IlvGadget::focusOut member function.

See Also: getOverriddenFocus, setFocus

virtual void IlvGadgetContainer::removeGrab ( )

virtual

Cancels the grabbing settings defined with setGrab.

See Also: getGrab, setGrab

void IlvGadgetContainer::setDefaultButton	(	IlvButton *	,
		IlBoolean	redraw = `IlTrue`
	)

Sets the default button of the gadget container.

The default button is triggered when the user presses the Return or Enter key in the dialog, even though it does not have the keyboard focus. Note that button doesn't need to be located in this gadget container.

Parameters

button	The new default button.
redraw	A Boolean value specifying whether the dialog should be redrawn.

See Also: IlvGadgetContainer::getDefaultButton, IlvGadget::usesDefaultButtonKeys

virtual void IlvGadgetContainer::setFocus	(	IlvGraphic *	graphic = `0`,
		IlBoolean	redraw = `IlTrue`
	)

virtual

Sets the focus to the specified object of the gadget container.

Sends an IlvKeyboardFocusOut event to the previous focused object, and an IlvKeyboardFocusIn event to graphic. If you set a Focus Out callback (see IlvGadget::setFocusOutCallback) on the previous focused object, It is possible inside this callback to tell the gadget container not to give the focus to graphic, but to another object by using the method IlvGadgetContainer::overrideFocus. This is useful if the "Focus Out" callback validates the previous focused object. In this case, if validation does not succeed, you may want to keep the focus on this object to give the user another try. If the focus mechanism has been disallowed, this method has no effect.

Parameters

graphic	The object that is given the keyboard focus.
redraw	A Boolean value specifying whether the gadget container should be redrawn.

See Also: getFocus, isFocusAllowed, IlvGadget::setFocusOutCallback, overrideFocus

virtual void IlvGadgetContainer::setGrab ( IlvGraphic * object )

virtual

Sets the specified object as the grabbing object.

Events will be sent to object. If this object has no associated interactor, the events will be lost.

Parameters

object The grabbing object.

See Also: getGrab, removeGrab

void IlvGadgetContainer::setLookFeelHandler ( IlvLookFeelHandler * lfh )

Sets the look and feel handler of this container.

Parameters

lfh	The new look and feel handler.

Rogue Wave ViewsGadgets Package API Reference Guide

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Rogue Wave Views
Gadgets Package API Reference Guide