Field class. More...

#include <ilviews/dataccess/fielditf.h>

Inheritance diagram for IliFieldItf:

Public Member Functions
void	f_applyReferences (IlvApplyObject f, IlAny a)
	Should be called when the `applyReferences()` member function, of the gadget class, is called. More...

virtual IlBoolean	f_complete ()
	Updates the internal value of the field, according to its current external representation and its foreign table, provided completion is enabled for the field. More...

virtual void	f_enableCompletion (IlBoolean flag)
	Sets the completion property of the field. More...

virtual IlBoolean	f_externalToInternal ()
	Updates the internal value of a field according to its current external representation. More...

virtual IlvAlignment	f_getAlignment () const
	Returns the text alignment of the field. More...

const IliDataSource *	f_getDataSource () const
	Returns the data source. More...

IliDataSource *	f_getDataSource ()
	Returns the data source. More...

const char *	f_getDataSourceColumnName () const
	Returns the name of the column. More...

const char *	f_getDataSourceName () const
	Returns the name of the data source, which this field is (or must be) connected to. More...

virtual const IliTablePropertyManager *	f_getEffectiveTablePropertyManager () const
	Returns the effective table property manager. More...

virtual IliTablePropertyManager *	f_getEffectiveTablePropertyManager ()
	Returns the effective table property manager. More...

const char *	f_getForeignDataSourceName () const
	Returns the name of the foreign data source. More...

const char *	f_getForeignDisplayColumnName () const
	Returns the name of the column of the foreign table that will serve as a result. More...

const IliTable *	f_getForeignTable () const
	Returns the foreign table. More...

IliTable *	f_getForeignTable ()
	Returns the foreign table. More...

const char *	f_getForeignValueColumnName () const
	Returns the name of the column of the foreign table that will serve as a key. More...

virtual const IliFormat &	f_getFormat () const
	Returns the format used to derive the external representation of the field from its internal value. More...

const IlvGadget *	f_getGadget () const
	Returns the constant gadget associated with this field through multiple inheritance. More...

IlvGadget *	f_getGadget ()
	Returns the gadget associated with this field through multiple inheritance. More...

const IlvGraphic *	f_getGraphic () const
	Returns the constant graphic associated with this field through multiple inheritance. More...

IlvGraphic *	f_getGraphic ()
	Returns the graphic associated with this field through multiple inheritance. More...

virtual const char *	f_getLabel () const
	Returns the label displayed by the field gadget. More...

virtual const IliInputMask &	f_getMask () const
	Returns the input mask used to edit values in the field. More...

virtual IlShort	f_getMaxLength () const
	Returns the maximum length allowed for the external representation of the field. More...

const char *	f_getTablePropertyManagerName () const
	Returns the name of the table property manager used by this field. More...

virtual const IliValue &	f_getValue (IlBoolean internal=IlFalse) const
	Returns the value of the field. More...

IlInt	f_getVisibleRowsCount () const
	Returns the number of rows that will be displayed when the foreign table is displayed. More...

virtual IlBoolean	f_hasLabel () const
	Returns `IlTrue` if the field gadget can display a label. More...

virtual void	f_ignoreModifiedState (IlBoolean ignore)
	Sets the ignore modified state attribute of the field. More...

virtual void	f_internalToExternal ()
	Updates the external representation of the field and its display according to its current internal value.

virtual IlBoolean	f_isAutoFitPullDown () const
	Returns `IlTrue` if the width of the pull-down menu is automatically computed so that its contents fit. More...

IlBoolean	f_isCompletionEnabled () const
	Returns `IlTrue` if completion is enabled. More...

IlBoolean	f_isConnectedToDataSource () const
	Returns `IlTrue` if the field is currently connected to a column of a data source. More...

virtual IlBoolean	f_isConsistent () const
	Returns `IlTrue` if the internal value of the field corresponds to its current external representation. More...

IlBoolean	f_isConstrained () const
	Returns `IlTrue` if the foreign table limits the set of possible internal values for this field. More...

IlBoolean	f_isDataSourceOwner () const
	Returns `IlTrue` if the field owns the data source. More...

IlBoolean	f_isForeignTableOwner () const
	Returns `IlTrue` if the field owns its foreign table. More...

virtual IlBoolean	f_isInputModified () const
	Returns `IlTrue` if the external representation has been edited by the end-user. More...

virtual IlBoolean	f_isModifiedStateIgnored () const
	Returns `IlTrue` if the modified states are ignored when the `f_setValue()` function is called. More...

virtual IlBoolean	f_isReadOnly () const
	Returns `IlTrue` if the field is read-only. More...

IlBoolean	f_isUsingTableProperties () const
	Returns `IlTrue` if the field uses table properties. More...

void	f_killFocus ()
	Should be called when the gadget loses the focus.

virtual void	f_selectTextForAppend ()
	Deselects all the text and positions the editing caret at the end of the text, provided the field gadget supports text selection.

virtual void	f_selectTextForOverwrite ()
	Selects all the text, provided the field gadget supports text selection.

virtual void	f_setAlignment (IlvAlignment align)
	Sets the text alignment of the field. More...

virtual void	f_setAutoFitPullDown (IlBoolean flag)
	Enables/disables the automatic width computing of the pull-down menu. More...

virtual void	f_setConstrained (IlBoolean flag)
	Sets the constrained property of the field. More...

virtual void	f_setDataSourceColumnName (const char *name)
	Sets the name of the column. More...

virtual void	f_setDataSourceName (const char *name)
	Sets the name of the data source. More...

void	f_setFocus ()
	Should be called when the gadget receives the focus.

virtual void	f_setForeignDataSourceName (const char *name)
	Sets the name of the foreign data source. More...

virtual void	f_setForeignDisplayColumnName (const char *name)
	Sets the name of the column of the foreign table that will serve as a result, when the table is used as a map to convert internal values into external representations. More...

virtual void	f_setForeignTable (IliTable *tbl, IlBoolean owner=IlFalse)
	Sets the foreign table of the field. More...

virtual void	f_setForeignValueColumnName (const char *name)
	Sets the name of the column of the foreign table that will serve as a key, when the table is used as a map to convert internal values into external representations. More...

virtual void	f_setFormat (const IliFormat &fmt)
	Sets the format used to derive the external representation of the field from its internal value. More...

virtual void	f_setInputModified (IlBoolean flag)
	Sets the input-modified attribute of the field. More...

virtual void	f_setLabel (const char *label)
	Sets the label of the field gadget. More...

virtual void	f_setMask (const IliInputMask &msk)
	Sets the input mask. More...

virtual void	f_setMaxLength (IlShort vmax)
	Sets the maximum length allowed for the external representation of the field. More...

virtual void	f_setReadOnly (IlBoolean flag)
	Sets the read-only property for the field. More...

virtual void	f_setTablePropertyManagerName (const char *name)
	Sets the name of the table property manager to use. More...

virtual IlBoolean	f_setValue (const IliValue &val, IlBoolean internal=IlFalse)
	Sets the value of the field. More...

virtual void	f_setVisibleRowsCount (IlInt count)
	Sets the number of rows to be displayed when the foreign table is displayed. More...

virtual IlBoolean	f_supportsTableProperties () const
	Returns `IlTrue` if this gadget supports table properties. More...

virtual void	f_useTableProperties (IlBoolean flag)
	Enables/Disables the use of the table properties. More...

Static Public Member Functions
static IlvSymbol *	InputModifiedSymbol ()
	Returns the name of the callback that the field gadget will invoke every time the field input-modified property changes from `IlFalse` to `IlTrue`. More...

Protected Member Functions
void	f_read (IlvInputFile &input)
	Should be called by the stream-based constructor of the gadget. More...

void	f_set (IlvGraphic *g, const IliFieldItf &other)
	Should be called by the copy constructor of the graphic class that is passed. More...

void	f_setGraphic (IlvGraphic *g)
	Should be called by all constructors of the graphic class (except the copy constructor). More...

void	f_subscribe ()
	Should be called after the `setHolder()` member function of the gadget class.

void	f_unsubscribe ()
	Should be called before the `setHolder()` member function of the gadget class. More...

void	f_write (IlvOutputFile &output) const
	Should be called by the `write()` member function of the gadget class. More...

Detailed Description

Field class.

Library: dataccess

This class defines the interface that is common to all data-source-aware gadgets. A data-source-aware gadget can connect to a data source and participate in the data source protocol. A data-source-aware gadget class is usually a subclass of both IlvGadget and IliFieldItf.

Warning: The IliFieldItf class also supports subclassing from the IlvGraphic class. But since it is most often used in conjunction with the IlvGadget class, we usually refer to such subclasses as data-source-aware gadgets.

A data-source-aware gadget (or field) has an internal value and an external representation. Sometimes the external representation corresponds exactly to the internal value. The end-user may then edit the external representation, therefore breaking the correspondence between them. At this point, it is possible to request that the field parse its external representation deriving a new internal value or, alternatively, that the end user edits are canceled and that the external representation is reset. The internal value is always represented as an instance of the IliValue class, whereas the external representation is specific to the gadget class. For instance, a text field will use a character string for its external representation, whereas a toggle field will use a shaded rectangle. The external representation is what the end-user sees; the internal value is what the application sees. A field can also be connected to a data source column. In this situation, the data source will set the internal value of the field each time a row change event occurs on the data source.

See also: IliDataSource, IliFormat, IliTable, IliValue, IlvGadget.

Accessors

Accessors provide a scriptable and uniform way to inspect and modify an object by using its base class methods IlvValueInterface::queryValue(), IlvValueInterface::queryValues(), IlvValueInterface::changeValue(), IlvValueInterface::changeValues(). This class defines the following accessors:

Data accessors

Name	Type	Equivalent methods
`alignment`	Direction	`f_getAlignment()`, `f_setAlignment()`. See [Alignment] below.
`columnName`	String	`f_getDataSourceColumnName()`, `f_setDataSourceColumnName()`. See [ColumnName] below.
`completion`	Boolean	`f_isCompletionEnabled()`, `f_enableCompletion()`. See [Completion] below.
`constrained`	Boolean	`f_isConstrained()`, `f_setConstrained()`. See [Contrained] below.
`dataSource`	Object	`f_getDataSource()`. See [DataSource]"</b> below. <tr><td>`dataSourceName` <td> String <td> `f_getDataSourceName()`, `f_setDataSourceName()`. See <b>\ref IliFieldItf_DataSource "[DataSource]"</b> below. <tr><td>`foreignDataSourceName` <td> String <td> `f_getForeignDataSourceName()`, `f_setForeignDataSourceName()`. See <b>\ref IliFieldItf_ForeignDataSourceName "[ForeignDataSourceName]"</b> below. <tr><td>`foreignDisplayColumnName` <td> String <td> `f_getForeignDisplayColumnName()`, `f_setForeignDisplayColumnName()`. See <b>\ref IliFieldItf_ForeignDisplayColumnName "[ForeignDisplayColumnName]"</b> below. <tr><td>`foreignTable` <td> Object <td> `f_getForeignTable()`, `f_setForeignTable()`. See <b>\ref IliFieldItf_ForeignTable "[ForeignTable]"</b> below. <tr><td>`foreignValueColumnName` <td> String <td> `f_getForeignValueColumnName()`, `f_setForeignValueColumnName()`. See <b>\ref IliFieldItf_ForeignValueColumnName "[ForeignValueColumnName]"</b> below. <tr><td>`format` <td> String <td> `f_getFormat()`, `f_setFormat()`. See <b>\ref IliFieldItf_Format "[Format]"</b> below. <tr><td>`inputModified` <td> Boolean <td> `f_isInputModified()`, `f_setInputModified()`. See <b>\ref IliFieldItf_InputModified "[InputModified]"</b> below. <tr><td>`label` <td> String <td> `f_getLabel()`, `f_setLabel()`. See <b>\ref IliFieldItf_Label "[Label]"</b> below. <tr><td>`mask` <td> String <td> `f_getMask()`, `f_setMask()`. See <b>\ref IliFieldItf_Mask "[Mask]"</b> below. <tr><td>`maxLength` <td> Int <td> `f_getMaxLength()`, `f_setMaxLength()`. See <b>\ref IliFieldItf_MaxLength "[MaxLength]"</b> below. <tr><td>`readOnly` <td> Boolean <td> `f_isReadOnly()`, `f_setReadOnly()`. See <b>\ref IliFieldItf_ReadOnly "[ReadOnly]"</b> below. <tr><td>`tablePropertyManagerName` <td> String <td> `f_getTablePropertyManagerName()`, `f_setTablePropertyManagerName()`. See <b>\ref IliFieldItf_TablePropertyManagerName "[TablePropertyManagerName]"</b> below. <tr><td>`useTableProperties` <td> Boolean <td> `f_isUsingTableProperties()`, `f_useTableProperties()`. See <b>\ref IliFieldItf_UseTableProperties "[UseTableProperties]"</b> below. <tr><td>`value` <td> Object <td> `f_getValue()`, `f_setValue()`. See <b>\ref IliFieldItf_Value "[Value]"</b> below. <tr><td>`visibleRowsCount` <td> Int <td> `f_getVisibleRowsCount()`, `f_setVisibleRowsCount()`. See <b>\ref IliFieldItf_VisibleRowsCount "[VisibleRowsCount]" below.

[Alignment]: available for IliDbField, IliDbPicture, IliEntryField only.

[ColumnName]: available for IliDbField, IliDbPicture, IliDbStringList, IliEntryField, IliDbOptionMenu, IliDbText, IliDbToggle, IliToggleSelector only.

[Completion]: available for IliDbField only.

[Contrained]: available for IliDbField only.

[DataSource]: available for IliDbField, IliEntryField, IliDbNavigator, IliDbOptionMenu, IliDbPicture, IliDbStringList, IliDbText, IliDbToggle, IliTableGadget, IliToggleSelector only.

[ForeignTable]: available for IliDbField, IliDbOptionMenu, IliDbStringList, IliDbToggle, IliToggleSelector only.

[ForeignDisplayColumnName]: available for IliDbField, IliDbOptionMenu, IliDbStringList, IliDbToggle, IliToggleSelector only.

[ForeignValueColumnName]: available for IliDbField, IliDbOptionMenu, IliDbStringList, IliDbToggle, IliToggleSelector only.

[Format]: available for IliDbField, IliEntryField only.

[InputModified]: available for IliEntryField, IliDbOptionMenu, IliDbPicture, IliDbStringList, IliDbText, IliDbToggle, IliTableGadget, IliToggleSelector only.

[Label]: available for IliDbField, IliDbToggle, IliToggleSelector only.

[Mask]: available for IliDbField, IliEntryField only.

[MaxLength]: available for IliDbField, IliEntryField, IliDbOptionMenu only.

[ReadOnly]: available for IliDbField, IliEntryField, IliDbOptionMenu, IliDbStringList, IliDbText, IliDbToggle, IliTableGadget, IliToggleSelector only.

[TablePropertyManagerName]: available for IliDbField, IliEntryField, IliDbOptionMenu, IliDbStringList, IliDbText, IliDbToggle, IliTableGadget, IliToggleSelector only.

[UseTableProperties]: available for IliDbField, IliEntryField, IliDbOptionMenu, IliDbStringList, IliDbText, IliDbToggle, IliTableGadget, IliToggleSelector only.

[Value]: available for IliDbField, IliEntryField, IliDbOptionMenu, IliDbPicture, IliDbStringList, IliDbText, IliDbToggle, IliToggleSelector only.

[VisibleRowsCount]: available for IliDbField only.

Member Function Documentation

void IliFieldItf::f_applyReferences	(	IlvApplyObject	f,
		IlAny	a
	)

Should be called when the applyReferences() member function, of the gadget class, is called.

Parameters

f	The function.
a	The user data.

virtual IlBoolean IliFieldItf::f_complete ( )

virtual

Updates the internal value of the field, according to its current external representation and its foreign table, provided completion is enabled for the field.

For more information on completion, see the f_iscompletionEnabled() member function.

Returns: IlTrue if successful.

Reimplemented in IliTableGadget, IliTableComboBox, IliDbField, and IliDbToggle.

virtual void IliFieldItf::f_enableCompletion ( IlBoolean flag )

virtual

Sets the completion property of the field.

Parameters

flag	If `IlTrue`, the completion property is on.

Reimplemented in IliDbField.

virtual IlBoolean IliFieldItf::f_externalToInternal ( )

virtual

Updates the internal value of a field according to its current external representation.

Returns: IlTrue if successful and IlFalse otherwise. Note that this may fail due to the fact that not all external representations can be converted to a value object. For example, this is especially true for text fields that are used to edit numeric or date values.

Reimplemented in IliTableGadget, IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliEntryField, IliDbPicture, IliDbStringList, IliDbOptionMenu, and IliDbText.

virtual IlvAlignment IliFieldItf::f_getAlignment ( ) const

virtual

Returns the text alignment of the field.

Returns: The alignment.

Reimplemented in IliDbField, IliDbPicture, and IliEntryField.

const IliDataSource* IliFieldItf::f_getDataSource ( ) const

Returns the data source.

Returns: The data source which this field is connected to, or 0, if it is not currently connected.

IliDataSource* IliFieldItf::f_getDataSource ( )

Returns the data source.

Returns: The data source which this field is connected to, or 0, if it is not currently connected.

const char* IliFieldItf::f_getDataSourceColumnName ( ) const

Returns the name of the column.

Returns: The name of the column which the field is (or must be) connected to.

const char* IliFieldItf::f_getDataSourceName ( ) const

Returns the name of the data source, which this field is (or must be) connected to.

Returns: The name of the data source.

virtual const IliTablePropertyManager* IliFieldItf::f_getEffectiveTablePropertyManager ( ) const

virtual

Returns the effective table property manager.

Returns

The effective table property manager that is obtained as follows:

If the useTableProperties property is IlFalse or if the data source to which the field is connected has its useTableProperties property set to IlFalse, this member function returns 0.
Otherwise, if the tablePropertyManagerName property is not empty, the table property manager with that name is returned.
Otherwise, if the data source to which the field is connected has a tablePropertyManagerName property that is not empty, the table property manager with that name is returned.
Otherwise, the table default property manager is returned.

Reimplemented in IliTableGadget.

virtual IliTablePropertyManager* IliFieldItf::f_getEffectiveTablePropertyManager ( )

virtual

Returns the effective table property manager.

Returns

The effective table property manager that is obtained as follows:

If the useTableProperties property is IlFalse or if the data source to which the field is connected has its useTableProperties property set to IlFalse, this member function returns 0.
Otherwise, if the tablePropertyManagerName property is not empty, the table property manager with that name is returned.
Otherwise, if the data source to which the field is connected has a tablePropertyManagerName property that is not empty, the table property manager with that name is returned.
Otherwise, the table default property manager is returned.

Reimplemented in IliTableGadget.

const char* IliFieldItf::f_getForeignDataSourceName ( ) const

Returns the name of the foreign data source.

Returns: The name.

const char* IliFieldItf::f_getForeignDisplayColumnName ( ) const

Returns the name of the column of the foreign table that will serve as a result.

Returns: The name of the column of the foreign table that will serve as a result, when the table is used as a map to convert internal values into external representations.

const IliTable* IliFieldItf::f_getForeignTable ( ) const

Returns the foreign table.

Returns: The foreign table.

IliTable* IliFieldItf::f_getForeignTable ( )

Returns the foreign table.

Returns: The foreign table.

const char* IliFieldItf::f_getForeignValueColumnName ( ) const

Returns the name of the column of the foreign table that will serve as a key.

Returns: The name of the column of the foreign table that will serve as a key, when the table is used as a map to convert internal values into external representations.

virtual const IliFormat& IliFieldItf::f_getFormat ( ) const

virtual

Returns the format used to derive the external representation of the field from its internal value.

Returns: The format.

Reimplemented in IliDbField, and IliEntryField.

const IlvGadget* IliFieldItf::f_getGadget ( ) const

Returns the constant gadget associated with this field through multiple inheritance.

Returns: The constant gadget associated with this field through multiple inheritance. If the graphic object which this field is associated with, is not a gadget, then this member function returns 0.

IlvGadget* IliFieldItf::f_getGadget ( )

Returns the gadget associated with this field through multiple inheritance.

Returns: The gadget associated with this field through multiple inheritance. If the graphic object which this field is associated with, is not a gadget, then this member function returns 0.

const IlvGraphic* IliFieldItf::f_getGraphic ( ) const

Returns the constant graphic associated with this field through multiple inheritance.

Returns: The graphic.

IlvGraphic* IliFieldItf::f_getGraphic ( )

Returns the graphic associated with this field through multiple inheritance.

Returns: The graphic.

virtual const char* IliFieldItf::f_getLabel ( ) const

virtual

Returns the label displayed by the field gadget.

Returns: The label.

Reimplemented in IliToggleSelector, IliDbField, and IliDbToggle.

virtual const IliInputMask& IliFieldItf::f_getMask ( ) const

virtual

Returns the input mask used to edit values in the field.

Currently, the classes that take into account the input mask are: IliEntryField and its subclasses.

Returns: The mask.

Reimplemented in IliDbField, and IliEntryField.

virtual IlShort IliFieldItf::f_getMaxLength ( ) const

virtual

Returns the maximum length allowed for the external representation of the field.

Returns: The maximum.

Reimplemented in IliDbField, and IliEntryField.

const char* IliFieldItf::f_getTablePropertyManagerName ( ) const

Returns the name of the table property manager used by this field.

Initially, this property is 0.

Returns: The name of the table property manager used by this field or 0 if the default table property manager is to be used.

virtual const IliValue& IliFieldItf::f_getValue ( IlBoolean internal = IlFalse ) const

virtual

Returns the value of the field.

Parameters

internal If IlTrue, the returned value does not necessarily reflect the state of the field as the user sees it.

Returns: The value.

Reimplemented in IliTableGadget, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbPicture, IliEntryField, IliDbStringList, IliDbOptionMenu, and IliDbText.

IlInt IliFieldItf::f_getVisibleRowsCount ( ) const

Returns the number of rows that will be displayed when the foreign table is displayed.

Returns: The number of rows that will be displayed when the foreign table is displayed. This is typically used for combo boxes.

virtual IlBoolean IliFieldItf::f_hasLabel ( ) const

virtual

Returns IlTrue if the field gadget can display a label.

Returns: IlTrue if the field gadget can display a label.

Reimplemented in IliToggleSelector, IliDbField, and IliDbToggle.

virtual void IliFieldItf::f_ignoreModifiedState ( IlBoolean ignore )

virtual

Sets the ignore modified state attribute of the field.

When the modified state are ignored, the input-modified attribute is not modified and the enterModifiedState callback is not called.

Parameters

ignore If the value is IlTrue then all modified state are ignored.

virtual IlBoolean IliFieldItf::f_isAutoFitPullDown ( ) const

virtual

Returns IlTrue if the width of the pull-down menu is automatically computed so that its contents fit.

Returns

IlTrue if the width of the pull-down menu is automatically computed so that its contents fit. The value returned by this virtual member function is currently meaningful only when the field gadget is one of the following:

IliTableComboBox
IliTableGadget

For a table gadget, this property applies to all table combo boxes contained in the table gadget.

Reimplemented in IliTableGadget, and IliTableComboBox.

IlBoolean IliFieldItf::f_isCompletionEnabled ( ) const

Returns IlTrue if completion is enabled.

Returns: IlTrue if completion is enabled for the field. Completion is the mechanism that allows an incomplete external representation to be completed using the foreign table to supply a valid external representation, and therefore the corresponding internal value. This allows the user to enter the initial characters of a word and have the field automatically complete the word.

IlBoolean IliFieldItf::f_isConnectedToDataSource ( ) const

Returns IlTrue if the field is currently connected to a column of a data source.

Returns: IlTrue if the field is currently connected to a column of a data source.

virtual IlBoolean IliFieldItf::f_isConsistent ( ) const

virtual

Returns IlTrue if the internal value of the field corresponds to its current external representation.

A return value of IlFalse means that the external representation of the field has been edited by the end-user since the last time one of the member functions, f_setValue(), f_externalToInternal(), f_internalToExternal() or f_complete() was successfully called.

Returns: IlTrue if the internal value of the field corresponds to its current external representation.

Reimplemented in IliTableGadget, IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbPicture, IliEntryField, IliDbStringList, IliDbOptionMenu, IliDbText, and IliSimpleToggle.

IlBoolean IliFieldItf::f_isConstrained ( ) const

Returns IlTrue if the foreign table limits the set of possible internal values for this field.

Returns: IlTrue if the foreign table limits the set of possible internal values for this field.

IlBoolean IliFieldItf::f_isDataSourceOwner ( ) const

Returns IlTrue if the field owns the data source.

Returns: IlTrue if the field owns the data source which it is connected to.

IlBoolean IliFieldItf::f_isForeignTableOwner ( ) const

Returns IlTrue if the field owns its foreign table.

Returns: IlTrue if the field owns its foreign table.

virtual IlBoolean IliFieldItf::f_isInputModified ( ) const

virtual

Returns IlTrue if the external representation has been edited by the end-user.

Returns: IlTrue if the external representation has been edited by the end-user since the last time one of the member functions, f_setValue(), f_externalToInternal(), f_internalToExternal(), or f_complete() was successfully called.

Reimplemented in IliTableGadget, and IliDbField.

virtual IlBoolean IliFieldItf::f_isModifiedStateIgnored ( ) const

virtual

Returns IlTrue if the modified states are ignored when the f_setValue() function is called.

For example: When you call the cancel() of the IliDataSource the modified state are ignored.

Returns: IlTrue if the modified states are ignored when the f_setValue() function is called. The default value is IlFalse.

virtual IlBoolean IliFieldItf::f_isReadOnly ( ) const

virtual

Returns IlTrue if the field is read-only.

Returns: IlTrue if the field is read-only.

Reimplemented in IliTableGadget, IliToggleSelector, IliDbField, IliDbToggle, IliAbstractComboBox, IliScrolledComboBox, IliDbPicture, IliEntryField, IliDbStringList, IliDbOptionMenu, and IliDbText.

IlBoolean IliFieldItf::f_isUsingTableProperties ( ) const

Returns IlTrue if the field uses table properties.

Returns: IlTrue if the field uses table properties. Note that for the field to effectively use table properties, this property must be IlTrue and the data source to which it is connected must also be using table properties. Initially, this property is true.

void IliFieldItf::f_read ( IlvInputFile & input )

protected

Should be called by the stream-based constructor of the gadget.

Parameters

input The input stream.

void IliFieldItf::f_set	(	IlvGraphic *	g,
		const IliFieldItf &	other
	)

protected

Should be called by the copy constructor of the graphic class that is passed.

Parameters

g	The object being constructed.
other	The object being copied.

virtual void IliFieldItf::f_setAlignment ( IlvAlignment align )

virtual

Sets the text alignment of the field.

Parameters

align The alignment.

Reimplemented in IliDbField, IliDbPicture, and IliEntryField.

virtual void IliFieldItf::f_setAutoFitPullDown ( IlBoolean flag )

virtual

Enables/disables the automatic width computing of the pull-down menu.

Parameters

flag	If `IlTrue`, the width of the pull-down menu is automatically computed so that its contents fit. See the description of `f_isAutoFitPullDown()` for more information on this property.

Reimplemented in IliTableGadget, and IliTableComboBox.

virtual void IliFieldItf::f_setConstrained ( IlBoolean flag )

virtual

Sets the constrained property of the field.

Parameters

flag	If `IlTrue` the constrained property is on.

Reimplemented in IliDbField.

virtual void IliFieldItf::f_setDataSourceColumnName ( const char * name )

virtual

Sets the name of the column.

Sets the name of the column which the field must connect to. In order for the field to be successfully connected, the column name must designate a valid column of the data source specified by the f_setDataSourceName() or f_setDataSource() member functions.

Parameters

name	The column name.

virtual void IliFieldItf::f_setDataSourceName ( const char * name )

virtual

Sets the name of the data source.

Sets the name of the data source, which this field must be connected to. To disconnect the field from a data source, the parameter can be passed as a 0. Note that actual connection to a data source occurs when the field is given a valid data source name and a valid column name.

Parameters

name	The data source name.

virtual void IliFieldItf::f_setForeignDataSourceName ( const char * name )

virtual

Sets the name of the foreign data source.

Parameters

name	The data source name.

virtual void IliFieldItf::f_setForeignDisplayColumnName ( const char * name )

virtual

Sets the name of the column of the foreign table that will serve as a result, when the table is used as a map to convert internal values into external representations.

Parameters

name	The column name.

Reimplemented in IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbStringList, and IliDbOptionMenu.

virtual void IliFieldItf::f_setForeignTable	(	IliTable *	tbl,
		IlBoolean	owner = `IlFalse`
	)

virtual

Sets the foreign table of the field.

Parameters

tbl	The table.
owner	Determines whether the field will own the table.

Reimplemented in IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbStringList, and IliDbOptionMenu.

virtual void IliFieldItf::f_setForeignValueColumnName ( const char * name )

virtual

Sets the name of the column of the foreign table that will serve as a key, when the table is used as a map to convert internal values into external representations.

Parameters

name	The column name.

Reimplemented in IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbStringList, and IliDbOptionMenu.

virtual void IliFieldItf::f_setFormat ( const IliFormat & fmt )

virtual

Sets the format used to derive the external representation of the field from its internal value.

Parameters

fmt	The format.

Reimplemented in IliDbField, and IliEntryField.

void IliFieldItf::f_setGraphic ( IlvGraphic * g )

protected

Should be called by all constructors of the graphic class (except the copy constructor).

Parameters

g	The object being constructed.

virtual void IliFieldItf::f_setInputModified ( IlBoolean flag )

virtual

Sets the input-modified attribute of the field.

This member function is presented here for completeness. However, it should be used with care since it may cause the field, and other related components, to be in error with regard to the current state of the field.

Parameters

flag	The input-modified attribute.

Reimplemented in IliTableGadget, IliDbField, and IliEntryField.

virtual void IliFieldItf::f_setLabel ( const char * label )

virtual

Sets the label of the field gadget.

Parameters

label The label.

Reimplemented in IliToggleSelector, IliDbField, and IliDbToggle.

virtual void IliFieldItf::f_setMask ( const IliInputMask & msk )

virtual

Sets the input mask.

Parameters

msk The mask.

Reimplemented in IliDbField, and IliEntryField.

virtual void IliFieldItf::f_setMaxLength ( IlShort vmax )

virtual

Sets the maximum length allowed for the external representation of the field.

Parameters

vmax	The maximum length.

Reimplemented in IliDbField, and IliEntryField.

virtual void IliFieldItf::f_setReadOnly ( IlBoolean flag )

virtual

Sets the read-only property for the field.

Parameters

flag	The read-only flag.

Reimplemented in IliTableGadget, IliToggleSelector, IliDbField, IliDbToggle, IliAbstractComboBox, IliScrolledComboBox, IliDbPicture, IliEntryField, IliDbStringList, IliDbOptionMenu, and IliDbText.

virtual void IliFieldItf::f_setTablePropertyManagerName ( const char * name )

virtual

Sets the name of the table property manager to use.

Parameters

name	The table property manager. If name is `0` or an empty string, the default table property manager is be used.

Reimplemented in IliTableGadget.

virtual IlBoolean IliFieldItf::f_setValue	(	const IliValue &	val,
		IlBoolean	internal = `IlFalse`
	)

virtual

Sets the value of the field.

Parameters

val	The value.
internal	If `IlFalse`, then the external representation and the display of the field are automatically updated.

Returns: IlTrue if successful, and IlFalse otherwise.

Reimplemented in IliTableGadget, IliTableComboBox, IliToggleSelector, IliDbField, IliDbToggle, IliScrolledComboBox, IliDbPicture, IliEntryField, IliDbStringList, IliDbOptionMenu, and IliDbText.

virtual void IliFieldItf::f_setVisibleRowsCount ( IlInt count )

virtual

Sets the number of rows to be displayed when the foreign table is displayed.

Parameters

count The row count.

Reimplemented in IliDbField.

virtual IlBoolean IliFieldItf::f_supportsTableProperties ( ) const

virtual

Returns IlTrue if this gadget supports table properties.

Returns: IlTrue if this gadget supports table properties.

Reimplemented in IliDbPicture.

void IliFieldItf::f_unsubscribe ( )

protected

Should be called before the setHolder() member function of the gadget class.

Example

Here is a synopsis of a minimal class of this nature:

class CustomFieldGadget
: public IlvGadget,
  public IliFieldItf
{
public:
    CustomFieldGadget(IlvDisplay* dpy, const IlvRect& rect)
    : IlvGadget(dpy, rect)
    {
        f_setGraphic(this);
    }
    CustomFieldGadget(IlvInputFile& is, IlvPalette* palette)
    : IlvGadget(is, palette)
    {
        f_setGraphic(this);
        f_read(is);
    }
    CustomFieldGadget(const CustomFieldGadget& o)
    : IlvGadget(o)
    {
        f_set(this, o);
    }
    void write(IlvOutputFile& os) const
    {
        IlvGadget::write(os);
        os.getStream() << ` `;
        f_write(os);
    }
    void setHolder(IlvGraphicHolder* holder)
    {
        f_unsubscribe();
        IlvGadget::setHolder(holder);
        f_subscribe();
    }
    void applyReferences(IlvApplyObject f, IlAny a)
    {
        IlvGadget::applyReferences(f, a);
        f_applyReferences(f, a);
    }
    IlBoolean handleEvent(IlvEvent& event)
    {
        if (event.type() == IlvKeyboardFocusOut) {
            f_killFocus();
        }
        IlBoolean ret = IlvGadget::handleEvent(event);
        if (event.type() == IlvKeyboardFocusIn) {
            f_setFocus();
        }
        return ret;
    }
};

virtual void IliFieldItf::f_useTableProperties ( IlBoolean flag )

virtual

Enables/Disables the use of the table properties.

Parameters

flag	If `IlTrue`, the field will use table properties.

Reimplemented in IliTableGadget.

void IliFieldItf::f_write ( IlvOutputFile & output ) const

protected

Should be called by the write() member function of the gadget class.

Parameters

output The output stream.

static IlvSymbol* IliFieldItf::InputModifiedSymbol ( )

static

Returns the name of the callback that the field gadget will invoke every time the field input-modified property changes from IlFalse to IlTrue.

Returns: The name of the callback that the field gadget will invoke every time the field input-modified property changes from IlFalse to IlTrue.

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Accessors

Data accessors

Member Function Documentation

Example