com.vaadin.ui
Class AbstractTextField

java.lang.Object
  com.vaadin.ui.AbstractComponent
      com.vaadin.ui.AbstractField
          com.vaadin.ui.AbstractTextField

All Implemented Interfaces:

Buffered, BufferedValidatable, Property, Property.Editor, Property.ReadOnlyStatusChangeListener, Property.ReadOnlyStatusChangeNotifier, Property.ValueChangeListener, Property.ValueChangeNotifier, Property.Viewer, Validatable, Action.ShortcutNotifier, FieldEvents.BlurNotifier, FieldEvents.FocusNotifier, FieldEvents.TextChangeNotifier, MethodEventSource, Paintable, Sizeable, VariableOwner, Component, Component.Focusable, Field, Serializable, EventListener

Direct Known Subclasses:

PasswordField, TextArea, TextField

public abstract class AbstractTextField
extends AbstractField
implements FieldEvents.BlurNotifier, FieldEvents.FocusNotifier, FieldEvents.TextChangeNotifier

See Also:

Serialized Form

Nested Class Summary

class	AbstractTextField.TextChangeEventImpl
static class	AbstractTextField.TextChangeEventMode Different modes how the TextField can trigger FieldEvents.TextChangeEvents.

Nested classes/interfaces inherited from class com.vaadin.ui.AbstractField

AbstractField.FocusShortcut, AbstractField.ReadOnlyStatusChangeEvent

Nested classes/interfaces inherited from class com.vaadin.ui.AbstractComponent

AbstractComponent.ComponentErrorEvent, AbstractComponent.ComponentErrorHandler

Nested classes/interfaces inherited from interface com.vaadin.ui.Field

Field.ValueChangeEvent

Nested classes/interfaces inherited from interface com.vaadin.data.Buffered

Buffered.SourceException

Nested classes/interfaces inherited from interface com.vaadin.data.Property

Property.ConversionException, Property.Editor, Property.ReadOnlyException, Property.ReadOnlyStatusChangeListener, Property.ReadOnlyStatusChangeNotifier, Property.ValueChangeListener, Property.ValueChangeNotifier, Property.Viewer

Constructor Summary

protected

AbstractTextField()

Method Summary

void	addListener(FieldEvents.BlurListener listener) Adds a BlurListener to the Component which gets fired when a Field loses keyboard focus.
void	addListener(FieldEvents.FocusListener listener) Adds a FocusListener to the Component which gets fired when a Field receives keyboard focus.
void	addListener(FieldEvents.TextChangeListener listener)
void	changeVariables(Object source, Map<String,Object> variables) Called when one or more variables handled by the implementing class are changed.
int	getColumns() Gets the number of columns in the editor.
int	getCursorPosition() Returns the last known cursor position of the field.
Format	getFormat() Deprecated. replaced by PropertyFormatter
protected String	getFormattedValue() Deprecated.
String	getInputPrompt() Gets the current input prompt.
int	getMaxLength() Returns the maximum number of characters in the field.
String	getNullRepresentation() Gets the null-string representation.
AbstractTextField.TextChangeEventMode	getTextChangeEventMode()
int	getTextChangeTimeout() Gets the timeout used to fire FieldEvents.TextChangeEvents when the getTextChangeEventMode() is AbstractTextField.TextChangeEventMode.LAZY or AbstractTextField.TextChangeEventMode.TIMEOUT.
Class	getType() Returns the type of the Property.
Object	getValue() Gets the current value of the field.
protected boolean	isEmpty() Is the field empty? In general, "empty" state is same as null.
boolean	isNullSettingAllowed() Is setting nulls with null-string representation allowed.
void	paintContent(PaintTarget target) Paints any needed component-specific things to the given UIDL stream.
void	removeListener(FieldEvents.BlurListener listener) Removes a BlurListener from the Component.
void	removeListener(FieldEvents.FocusListener listener) Removes a FocusListener from the Component.
void	removeListener(FieldEvents.TextChangeListener listener)
void	selectAll() Selects all text in the field.
void	setColumns(int columns) Sets the number of columns in the editor.
void	setCursorPosition(int pos) Sets the cursor position in the field.
void	setFormat(Format format) Deprecated. replaced by PropertyFormatter
void	setInputPrompt(String inputPrompt) Sets the input prompt - a textual prompt that is displayed when the field would otherwise be empty, to prompt the user for input.
protected void	setInternalValue(Object newValue) Sets the internal field value.
void	setMaxLength(int maxLength) Sets the maximum number of characters in the field.
void	setNullRepresentation(String nullRepresentation) Sets the null-string representation.
void	setNullSettingAllowed(boolean nullSettingAllowed) Sets the null conversion mode.
void	setSelectionRange(int pos, int length) Sets the range of text to be selected.
void	setTextChangeEventMode(AbstractTextField.TextChangeEventMode inputEventMode) Sets the mode how the TextField triggers FieldEvents.TextChangeEvents.
void	setTextChangeTimeout(int timeout) The text change timeout modifies how often text change events are communicated to the application when getTextChangeEventMode() is AbstractTextField.TextChangeEventMode.LAZY or AbstractTextField.TextChangeEventMode.TIMEOUT.
void	setValue(Object newValue) Sets the value of the field.

Methods inherited from class com.vaadin.ui.AbstractField

addListener, addListener, addShortcutListener, addValidator, attach, commit, constructField, detach, discard, fireReadOnlyStatusChange, fireValueChange, focus, getActionManager, getErrorMessage, getPropertyDataSource, getRequiredError, getTabIndex, getValidators, isInvalidAllowed, isInvalidCommitted, isModified, isReadOnly, isReadThrough, isRequired, isValid, isValidationVisible, isWriteThrough, readOnlyStatusChange, removeAllValidators, removeListener, removeListener, removeShortcutListener, removeValidator, setCurrentBufferedSourceException, setInvalidAllowed, setInvalidCommitted, setPropertyDataSource, setReadOnly, setReadThrough, setRequired, setRequiredError, setTabIndex, setValidationVisible, setValue, setWriteThrough, shouldHideErrors, toString, validate, valueChange

Methods inherited from class com.vaadin.ui.AbstractComponent

addListener, addListener, addListener, addListener, addListener, addStyleName, childRequestedRepaint, fireComponentErrorEvent, fireComponentEvent, fireEvent, getApplication, getCaption, getComponentError, getData, getDebugId, getDescription, getErrorHandler, getHeight, getHeightUnits, getIcon, getListeners, getLocale, getParent, getStyle, getStyleName, getWidth, getWidthUnits, getWindow, handleError, hasListeners, isEnabled, isImmediate, isVisible, paint, removeListener, removeListener, removeListener, removeListener, removeListener, removeListener, removeStyleName, requestRepaint, requestRepaintRequests, setCaption, setComponentError, setData, setDebugId, setDescription, setEnabled, setErrorHandler, setHeight, setHeight, setHeight, setHeightUnits, setIcon, setImmediate, setLocale, setParent, setSizeFull, setSizeUndefined, setStyle, setStyleName, setVisible, setWidth, setWidth, setWidth, setWidthUnits

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.vaadin.ui.Field

getDescription, setCaption, setDescription

Constructor Detail

AbstractTextField

protected AbstractTextField()

Method Detail

paintContent

public void paintContent(PaintTarget target)
                  throws PaintException

Description copied from class: AbstractComponent

Paints any needed component-specific things to the given UIDL stream. The more general AbstractComponent.paint(PaintTarget) method handles all general attributes common to all components, and it calls this method to paint any component-specific attributes to the UIDL stream.

Overrides:

paintContent in class AbstractField

Parameters:

target - the target UIDL stream where the component should paint itself to

Throws:

PaintException - if the paint operation failed.

getFormattedValue

@Deprecated
protected String getFormattedValue()

Deprecated.

Gets the formatted string value. Sets the field value by using the assigned Format.

Returns:

the Formatted value.

See Also:

setFormat(Format), Format

getValue

public Object getValue()

Description copied from class: AbstractField

Gets the current value of the field.

This is the visible, modified and possible invalid value the user have entered to the field. In the read-through mode, the abstract buffer is also updated and validation is performed.

Note that the object returned is compatible with getType(). For example, if the type is String, this returns Strings even when the underlying datasource is of some other type. In order to access the datasources native type, use getPropertyDatasource().getValue() instead.

Note that when you extend AbstractField, you must reimplement this method if datasource.getValue() is not assignable to class returned by getType() AND getType() is not String. In case of Strings, getValue() calls datasource.toString() instead of datasource.getValue().

Specified by:

getValue in interface Property

Overrides:

getValue in class AbstractField

Returns:

the current value of the field.

changeVariables

public void changeVariables(Object source,
                            Map<String,Object> variables)

Description copied from interface: VariableOwner

Called when one or more variables handled by the implementing class are changed.

Specified by:

changeVariables in interface VariableOwner

Overrides:

changeVariables in class AbstractField

Parameters:

source - the Source of the variable change. This is the origin of the event. For example in Web Adapter this is the request.

variables - the Mapping from variable names to new variable values.

getType

public Class getType()

Description copied from interface: Property

Returns the type of the Property. The methods getValue and setValue must be compatible with this type: one must be able to safely cast the value returned from getValue to the given type and pass any variable assignable to this type as an argument to setValue.

Specified by:

getType in interface Property

Specified by:

getType in class AbstractField

Returns:

type of the Property

getNullRepresentation

public String getNullRepresentation()

Gets the null-string representation.

The null-valued strings are represented on the user interface by replacing the null value with this string. If the null representation is set null (not 'null' string), painting null value throws exception.

The default value is string 'null'.

Returns:

the String Textual representation for null strings.

See Also:

isNullSettingAllowed()

isNullSettingAllowed

public boolean isNullSettingAllowed()

Is setting nulls with null-string representation allowed.

If this property is true, writing null-representation string to text field always sets the field value to real null. If this property is false, null setting is not made, but the null values are maintained. Maintenance of null-values is made by only converting the textfield contents to real null, if the text field matches the null-string representation and the current value of the field is null.

By default this setting is false

Returns:

boolean Should the null-string represenation be always converted to null-values.

See Also:

getNullRepresentation()

setNullRepresentation

public void setNullRepresentation(String nullRepresentation)

Sets the null-string representation.

The null-valued strings are represented on the user interface by replacing the null value with this string. If the null representation is set null (not 'null' string), painting null value throws exception.

The default value is string 'null'

Parameters:

nullRepresentation - Textual representation for null strings.

See Also:

setNullSettingAllowed(boolean)

setNullSettingAllowed

public void setNullSettingAllowed(boolean nullSettingAllowed)

Sets the null conversion mode.

If this property is true, writing null-representation string to text field always sets the field value to real null. If this property is false, null setting is not made, but the null values are maintained. Maintenance of null-values is made by only converting the textfield contents to real null, if the text field matches the null-string representation and the current value of the field is null.

By default this setting is false.

Parameters:

nullSettingAllowed - Should the null-string representation always be converted to null-values.

See Also:

getNullRepresentation()

getFormat

@Deprecated
public Format getFormat()

Deprecated. replaced by PropertyFormatter

Gets the value formatter of TextField.

Returns:

the Format used to format the value.

setFormat

@Deprecated
public void setFormat(Format format)

Deprecated. replaced by PropertyFormatter

Gets the value formatter of TextField.

Parameters:

format - the Format used to format the value. Null disables the formatting.

isEmpty

protected boolean isEmpty()

Description copied from class: AbstractField

Is the field empty? In general, "empty" state is same as null. As an exception, TextField also treats empty string as "empty".

Overrides:

isEmpty in class AbstractField

getMaxLength

public int getMaxLength()

Returns the maximum number of characters in the field. Value -1 is considered unlimited. Terminal may however have some technical limits.

Returns:

the maxLength

setMaxLength

public void setMaxLength(int maxLength)

Sets the maximum number of characters in the field. Value -1 is considered unlimited. Terminal may however have some technical limits.

Parameters:

maxLength - the maxLength to set

getColumns

public int getColumns()

Gets the number of columns in the editor. If the number of columns is set 0, the actual number of displayed columns is determined implicitly by the adapter.

Returns:

the number of columns in the editor.

setColumns

public void setColumns(int columns)

Sets the number of columns in the editor. If the number of columns is set 0, the actual number of displayed columns is determined implicitly by the adapter.

Parameters:

columns - the number of columns to set.

getInputPrompt

public String getInputPrompt()

Gets the current input prompt.

Returns:

the current input prompt, or null if not enabled

See Also:

setInputPrompt(String)

setInputPrompt

public void setInputPrompt(String inputPrompt)

Sets the input prompt - a textual prompt that is displayed when the field would otherwise be empty, to prompt the user for input.

Parameters:

inputPrompt -

setInternalValue

protected void setInternalValue(Object newValue)

Description copied from class: AbstractField

Sets the internal field value. This is purely used by AbstractField to change the internal Field value. It does not trigger valuechange events. It can be overridden by the inheriting classes to update all dependent variables.

Overrides:

setInternalValue in class AbstractField

Parameters:

newValue - the new value to be set.

setValue

public void setValue(Object newValue)
              throws Property.ReadOnlyException,
                     Property.ConversionException

Description copied from class: AbstractField

Sets the value of the field.

Specified by:

setValue in interface Property

Overrides:

setValue in class AbstractField

Parameters:

newValue - the New value of the field.

Throws:

Property.ReadOnlyException - if the object is in read-only mode

Property.ConversionException - if newValue can't be converted into the Property's native type directly or through String

setTextChangeEventMode

public void setTextChangeEventMode(AbstractTextField.TextChangeEventMode inputEventMode)

Sets the mode how the TextField triggers FieldEvents.TextChangeEvents.

Parameters:

inputEventMode - the new mode

See Also:

AbstractTextField.TextChangeEventMode

getTextChangeEventMode

public AbstractTextField.TextChangeEventMode getTextChangeEventMode()

Returns:

the mode used to trigger FieldEvents.TextChangeEvents.

addListener

public void addListener(FieldEvents.TextChangeListener listener)

Specified by:

addListener in interface FieldEvents.TextChangeNotifier

removeListener

public void removeListener(FieldEvents.TextChangeListener listener)

Specified by:

removeListener in interface FieldEvents.TextChangeNotifier

setTextChangeTimeout

public void setTextChangeTimeout(int timeout)

The text change timeout modifies how often text change events are communicated to the application when getTextChangeEventMode() is AbstractTextField.TextChangeEventMode.LAZY or AbstractTextField.TextChangeEventMode.TIMEOUT.

Parameters:

timeout - the timeout in milliseconds

See Also:

getTextChangeEventMode()

getTextChangeTimeout

public int getTextChangeTimeout()

Gets the timeout used to fire FieldEvents.TextChangeEvents when the getTextChangeEventMode() is AbstractTextField.TextChangeEventMode.LAZY or AbstractTextField.TextChangeEventMode.TIMEOUT.

Returns:

the timeout value in milliseconds

selectAll

public void selectAll()

Selects all text in the field.

Since:

6.4

setSelectionRange

public void setSelectionRange(int pos,
                              int length)

Sets the range of text to be selected. As a side effect the field will become focused.

Parameters:

pos - the position of the first character to be selected

length - the number of characters to be selected

Since:

6.4

setCursorPosition

public void setCursorPosition(int pos)

Sets the cursor position in the field. As a side effect the field will become focused.

Parameters:

pos - the position for the cursor

Since:

6.4

getCursorPosition

public int getCursorPosition()

Returns the last known cursor position of the field.

Note that due to the client server nature or the GWT terminal, Vaadin cannot provide the exact value of the cursor position in most situations. The value is updated only when the client side terminal communicates to TextField, like on ValueChangeEvents and FieldEvents.TextChangeEvent s. This may change later if a deep push integration is built to Vaadin.

Returns:

the cursor position

addListener

public void addListener(FieldEvents.FocusListener listener)

Description copied from interface: FieldEvents.FocusNotifier

Adds a FocusListener to the Component which gets fired when a Field receives keyboard focus.

Specified by:

addListener in interface FieldEvents.FocusNotifier

See Also:

FieldEvents.FocusListener

removeListener

public void removeListener(FieldEvents.FocusListener listener)

Description copied from interface: FieldEvents.FocusNotifier

Removes a FocusListener from the Component.

Specified by:

removeListener in interface FieldEvents.FocusNotifier

See Also:

FieldEvents.FocusListener

addListener

public void addListener(FieldEvents.BlurListener listener)

Description copied from interface: FieldEvents.BlurNotifier

Adds a BlurListener to the Component which gets fired when a Field loses keyboard focus.

Specified by:

addListener in interface FieldEvents.BlurNotifier

See Also:

FieldEvents.BlurListener

removeListener

public void removeListener(FieldEvents.BlurListener listener)

Description copied from interface: FieldEvents.BlurNotifier

Removes a BlurListener from the Component.

Specified by:

removeListener in interface FieldEvents.BlurNotifier

See Also:

FieldEvents.BlurListener