Wt  3.3.9
Public Types | Public Member Functions | Protected Member Functions | List of all members
Wt::WLineEdit Class Reference

A widget that provides a single line edit. More...

#include <Wt/WLineEdit>

Inheritance diagram for Wt::WLineEdit:
Inheritance graph
[legend]

Public Types

- Public Types inherited from Wt::WObject
typedef void(WObject::* Method) ()
 Typedef for a WObject method without arguments.
 

Public Member Functions

 WLineEdit (WContainerWidget *parent=0)
 Creates a line edit with empty content and optional parent.
 
 WLineEdit (const WString &content, WContainerWidget *parent=0)
 Creates a line edit with given content and optional parent.
 
void setTextSize (int chars)
 Specifies the width of the line edit in number of characters. More...
 
int textSize () const
 Returns the current width of the line edit in number of characters. More...
 
virtual void setText (const WString &text)
 Sets the content of the line edit. More...
 
const WStringtext () const
 Returns the current content. More...
 
WString displayText () const
 Returns the displayed text. More...
 
void setMaxLength (int length)
 Specifies the maximum length of text that can be entered. More...
 
int maxLength () const
 Returns the maximum length of text that can be entered. More...
 
void setEchoMode (EchoMode echoMode)
 Sets the echo mode. More...
 
EchoMode echoMode () const
 Returns the echo mode. More...
 
void setAutoComplete (bool enabled)
 Sets (built-in browser) autocomplete support. More...
 
bool autoComplete () const
 Returns auto-completion support. More...
 
int selectionStart () const
 Returns the current selection start. More...
 
WString selectedText () const
 Returns the currently selected text. More...
 
bool hasSelectedText () const
 Returns whether there is selected text. More...
 
void setSelection (int start, int length)
 Selects length characters starting from the start position. More...
 
int cursorPosition () const
 Returns the current cursor position. More...
 
virtual WString valueText () const
 Returns the current value. More...
 
virtual void setValueText (const WString &value)
 Sets the current value. More...
 
WString inputMask () const
 Returns the input mask. More...
 
void setInputMask (const WString &mask="", WFlags< InputMaskFlag > flags=0)
 Sets the input mask. More...
 
virtual WValidator::State validate ()
 Validates the field. More...
 
EventSignaltextInput ()
 Event signal emitted when the text in the input field changed. More...
 
- Public Member Functions inherited from Wt::WFormWidget
 WFormWidget (WContainerWidget *parent=0)
 Creates a WFormWidget with an optional parent.
 
 ~WFormWidget ()
 Destructor. More...
 
WLabellabel () const
 Returns the label associated with this widget. More...
 
virtual void setHidden (bool hidden, const WAnimation &animation=WAnimation())
 Sets the hidden state of this widget. More...
 
void setValidator (WValidator *validator)
 Sets a validator for this field. More...
 
virtual WValidatorvalidator () const
 Returns the validator.
 
void setEnabled (bool enabled)
 Sets whether the widget is enabled. More...
 
virtual void setReadOnly (bool readOnly)
 Sets the element read-only. More...
 
bool isReadOnly () const
 Returns whether the form element is read-only. More...
 
void setEmptyText (const WString &emptyText)
 Sets the placeholder text (deprecated). More...
 
const WStringemptyText () const
 Returns the placeholder text (deprecated). More...
 
virtual void setPlaceholderText (const WString &placeholder)
 Sets the placeholder text. More...
 
const WStringplaceholderText () const
 Returns the placeholder text. More...
 
EventSignalchanged ()
 Signal emitted when the value was changed. More...
 
EventSignalselected ()
 Signal emitted when ??
 
Signal< WValidator::Result > & validated ()
 Signal emitted when the widget is being validated. More...
 
virtual void refresh ()
 Refresh the widget. More...
 
virtual void setToolTip (const WString &text, TextFormat textFormat=PlainText)
 Sets a tooltip. More...
 
virtual bool canReceiveFocus () const
 Returns whether the widget can receive focus. More...
 
virtual int tabIndex () const
 Returns the tab index. More...
 
- Public Member Functions inherited from Wt::WInteractWidget
 WInteractWidget (WContainerWidget *parent=0)
 Create an InteractWidget with optional parent.
 
EventSignal< WKeyEvent > & keyWentDown ()
 Event signal emitted when a keyboard key is pushed down. More...
 
EventSignal< WKeyEvent > & keyPressed ()
 Event signal emitted when a "character" was entered. More...
 
EventSignal< WKeyEvent > & keyWentUp ()
 Event signal emitted when a keyboard key is released. More...
 
EventSignalenterPressed ()
 Event signal emitted when enter was pressed. More...
 
EventSignalescapePressed ()
 Event signal emitted when escape was pressed. More...
 
EventSignal< WMouseEvent > & clicked ()
 Event signal emitted when a mouse key was clicked on this widget. More...
 
EventSignal< WMouseEvent > & doubleClicked ()
 Event signal emitted when a mouse key was double clicked on this widget. More...
 
EventSignal< WMouseEvent > & mouseWentDown ()
 Event signal emitted when a mouse key was pushed down on this widget. More...
 
EventSignal< WMouseEvent > & mouseWentUp ()
 Event signal emitted when a mouse key was released on this widget. More...
 
EventSignal< WMouseEvent > & mouseWentOut ()
 Event signal emitted when the mouse went out of this widget. More...
 
EventSignal< WMouseEvent > & mouseWentOver ()
 Event signal emitted when the mouse entered this widget. More...
 
EventSignal< WMouseEvent > & mouseMoved ()
 Event signal emitted when the mouse moved over this widget. More...
 
EventSignal< WMouseEvent > & mouseDragged ()
 Event signal emitted when the mouse is dragged over this widget. More...
 
EventSignal< WMouseEvent > & mouseWheel ()
 Event signal emitted when the mouse scroll wheel was used. More...
 
EventSignal< WTouchEvent > & touchStarted ()
 Event signal emitted when a finger is placed on the screen. More...
 
EventSignal< WTouchEvent > & touchEnded ()
 Event signal emitted when a finger is removed from the screen. More...
 
EventSignal< WTouchEvent > & touchMoved ()
 Event signal emitted when a finger, which is already placed on the screen, is moved across the screen. More...
 
EventSignal< WGestureEvent > & gestureStarted ()
 Event signal emitted when a gesture is started. More...
 
EventSignal< WGestureEvent > & gestureChanged ()
 Event signal emitted when a gesture is changed. More...
 
EventSignal< WGestureEvent > & gestureEnded ()
 Event signal emitted when a gesture is ended. More...
 
void setDraggable (const std::string &mimeType, WWidget *dragWidget=0, bool isDragWidgetOnly=false, WObject *sourceWidget=0)
 Configure dragging for drag and drop. More...
 
void unsetDraggable ()
 Disable drag & drop for this widget. More...
 
void setMouseOverDelay (int delay)
 Sets a delay for the mouse over event. More...
 
int mouseOverDelay () const
 Returns the mouse over signal delay. More...
 
virtual void setPopup (bool popup)
 Lets the widget overlay over other sibling widgets. More...
 
virtual void load ()
 Loads content just before the widget is used. More...
 
virtual bool isEnabled () const
 Returns whether the widget is enabled. More...
 
- Public Member Functions inherited from Wt::WWebWidget
 WWebWidget (WContainerWidget *parent=0)
 Construct a WebWidget with a given parent. More...
 
virtual void setPositionScheme (PositionScheme scheme)
 Sets the CSS position scheme. More...
 
virtual PositionScheme positionScheme () const
 Returns the CSS position scheme. More...
 
virtual void setOffsets (const WLength &offset, WFlags< Side > sides=All)
 Sets CSS offsets for a non-statically positioned widget. More...
 
virtual WLength offset (Side s) const
 Returns a CSS offset. More...
 
virtual void resize (const WLength &width, const WLength &height)
 Resizes the widget. More...
 
virtual WLength width () const
 Returns the width. More...
 
virtual WLength height () const
 Returns the height. More...
 
virtual void setMinimumSize (const WLength &width, const WLength &height)
 Sets a minimum size. More...
 
virtual WLength minimumWidth () const
 Returns the minimum width. More...
 
virtual WLength minimumHeight () const
 Returns the minimum height. More...
 
virtual void setMaximumSize (const WLength &width, const WLength &height)
 Sets a maximum size. More...
 
virtual WLength maximumWidth () const
 Returns the maximum width. More...
 
virtual WLength maximumHeight () const
 Returns the maximum height. More...
 
virtual void setLineHeight (const WLength &height)
 Sets the CSS line height for contained text.
 
virtual WLength lineHeight () const
 Returns the CSS line height for contained text. More...
 
virtual void setFloatSide (Side s)
 Specifies a CSS float side. More...
 
virtual Side floatSide () const
 Returns the CSS float side. More...
 
virtual void setClearSides (WFlags< Side > sides)
 Sets the sides that should be cleared of floats. More...
 
virtual WFlags< SideclearSides () const
 Returns the sides that should remain empty. More...
 
virtual void setMargin (const WLength &margin, WFlags< Side > sides=All)
 Sets CSS margins around the widget. More...
 
virtual WLength margin (Side side) const
 Returns a CSS margin set. More...
 
virtual void setHiddenKeepsGeometry (bool enabled)
 Sets whether the widget keeps its geometry when hidden. More...
 
virtual bool hiddenKeepsGeometry () const
 Returns whether the widget keeps its geometry when hidden. More...
 
virtual bool isHidden () const
 Returns whether the widget is set hidden. More...
 
virtual bool isVisible () const
 Returns whether the widget is visible. More...
 
virtual void setDisabled (bool disabled)
 Sets whether the widget is disabled. More...
 
virtual bool isDisabled () const
 Returns whether the widget is set disabled. More...
 
virtual bool isPopup () const
 Returns whether the widget is overlayed. More...
 
virtual void setInline (bool isInline)
 Sets whether the widget is displayed inline or as a block. More...
 
virtual bool isInline () const
 Returns whether the widget is displayed inline or as block. More...
 
virtual void setDecorationStyle (const WCssDecorationStyle &style)
 Sets a CSS decoration style. More...
 
virtual WCssDecorationStyledecorationStyle ()
 Returns the decoration style of this widget. More...
 
virtual void setStyleClass (const WString &styleClass)
 Sets (one or more) CSS style classes. More...
 
virtual WString styleClass () const
 Returns the CSS style class. More...
 
virtual void addStyleClass (const WString &styleClass, bool force=false)
 Adds a CSS style class. More...
 
virtual void removeStyleClass (const WString &styleClass, bool force=false)
 Removes a CSS style class. More...
 
virtual bool hasStyleClass (const WString &styleClass) const
 Returns whether the widget has a style class.
 
virtual void setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength())
 Sets the vertical alignment. More...
 
virtual AlignmentFlag verticalAlignment () const
 Returns the vertical alignment. More...
 
virtual WLength verticalAlignmentLength () const
 Returns the fixed vertical alignment that was set. More...
 
virtual void setDeferredToolTip (bool enable, TextFormat textFormat=PlainText)
 Enable deferred tooltip. More...
 
virtual WString toolTip () const
 Returns the tooltip.
 
virtual void setAttributeValue (const std::string &name, const WString &value)
 Sets an attribute value. More...
 
virtual WString attributeValue (const std::string &name) const
 Returns an attribute value. More...
 
virtual void setJavaScriptMember (const std::string &name, const std::string &value)
 Sets a JavaScript member. More...
 
virtual std::string javaScriptMember (const std::string &name) const
 Returns the value of a JavaScript member. More...
 
virtual void callJavaScriptMember (const std::string &name, const std::string &args)
 Calls a JavaScript member. More...
 
virtual bool loaded () const
 Returns whether this widget has been loaded. More...
 
virtual void setId (const std::string &id)
 Sets the CSS Id. More...
 
virtual WWidgetfind (const std::string &name)
 Finds a descendent widget by name. More...
 
virtual WWidgetfindById (const std::string &id)
 Finds a descendent widget by id.
 
virtual void setSelectable (bool selectable)
 Sets as selectable. More...
 
virtual void doJavaScript (const std::string &javascript)
 Executes the given JavaScript statements when the widget is rendered or updated. More...
 
virtual const std::string id () const
 Returns the (unique) identifier for this object. More...
 
void setLoadLaterWhenInvisible (bool)
 Change the way the widget is loaded when invisible. More...
 
std::string htmlTagName () const
 returns the current html tag name More...
 
void setHtmlTagName (const std::string &tag)
 set the custom HTML tag name More...
 
const std::vector< WWidget * > & children () const
 Returns contained widgets. More...
 
SignalchildrenChanged ()
 Signal emitted when children have been added or removed. More...
 
virtual void setCanReceiveFocus (bool enabled)
 Sets whether the widget can receive focus. More...
 
virtual bool setFirstFocus ()
 Set focus on the widget's first descendant. More...
 
virtual void setFocus (bool focus)
 Sets focus. More...
 
virtual bool hasFocus () const
 Returns whether the widget currently has the focus.
 
virtual void setTabIndex (int index)
 Sets the tab index. More...
 
EventSignalblurred ()
 Signal emitted when the widget lost focus. More...
 
EventSignalfocussed ()
 Signal emitted when the widget recieved focus. More...
 
virtual bool scrollVisibilityEnabled () const WT_CXX11ONLY(finaloverride)
 Returns whether scroll visibility detection is enabled for this widget. More...
 
virtual void setScrollVisibilityEnabled (bool enabled) WT_CXX11ONLY(finaloverride)
 Sets whether scroll visibility detection is enabled for this widget. More...
 
virtual int scrollVisibilityMargin () const WT_CXX11ONLY(finaloverride)
 Returns the margin around the viewport within which the widget is considered visible. More...
 
virtual void setScrollVisibilityMargin (int margin) WT_CXX11ONLY(finaloverride)
 Sets the margin around the viewport within which the widget is considered visible. More...
 
virtual Signal< bool > & scrollVisibilityChanged () WT_CXX11ONLY(finaloverride)
 Signal triggered when the scroll visibility of this widget changes. More...
 
virtual bool isScrollVisible () const WT_CXX11ONLY(finaloverride)
 Returns whether this widget is currently considered scroll visible. More...
 
virtual void setThemeStyleEnabled (bool enabled)
 Sets whether theme styling for a widget is enabled or disabled. More...
 
virtual bool isThemeStyleEnabled () const
 Returns whether this widget is currently styled by the chosen theme. More...
 
- Public Member Functions inherited from Wt::WWidget
virtual ~WWidget ()
 Destructor. More...
 
WWidgetparent () const
 Returns the parent widget. More...
 
virtual void removeChild (WObject *child)
 Removes a child object. More...
 
void setWidth (const WLength &width)
 Sets the width. More...
 
void setHeight (const WLength &height)
 Sets the height. More...
 
virtual void positionAt (const WWidget *widget, Orientation orientation=Vertical)
 Positions a widget next to another widget. More...
 
virtual void toggleStyleClass (const WString &styleClass, bool add, bool force=false)
 Toggles a CSS style class.
 
std::string jsRef () const
 Returns a JavaScript expression to the corresponding DOM node. More...
 
void setFocus ()
 Sets focus. More...
 
virtual void acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString())
 Sets a mime type to be accepted for dropping. More...
 
virtual void stopAcceptDrops (const std::string &mimeType)
 Indicates that a mime type is no longer accepted for dropping. More...
 
virtual void setObjectName (const std::string &name)
 Sets an object name. More...
 
virtual void htmlText (std::ostream &out)
 Streams the (X)HTML representation. More...
 
bool isRendered () const
 Returns whether the widget is rendered. More...
 
void hide ()
 Hides the widget. More...
 
void animateHide (const WAnimation &animation)
 Hides the widget using an animation. More...
 
void show ()
 Shows the widget. More...
 
void animateShow (const WAnimation &animation)
 Shows the widget using an animation. More...
 
void enable ()
 Enables the widget. More...
 
void disable ()
 Disable thes widget. More...
 
bool layoutSizeAware () const
 Returns whether the widget is layout size aware. More...
 
- Public Member Functions inherited from Wt::WObject
 WObject (WObject *parent=0)
 Create a WObject with a given parent object. More...
 
virtual ~WObject ()
 Destructor. More...
 
virtual std::string objectName () const
 Returns the object name. More...
 
void resetLearnedSlots ()
 Resets learned stateless slot implementations. More...
 
template<class T >
void resetLearnedSlot (void(T::*method)())
 Resets a learned stateless slot implementation. More...
 
template<class T >
WStatelessSlot * implementStateless (void(T::*method)())
 Declares a slot to be stateless and learn client-side behaviour on first invocation. More...
 
template<class T >
WStatelessSlot * implementStateless (void(T::*method)(), void(T::*undoMethod)())
 Declares a slot to be stateless and learn client-side behaviour in advance. More...
 
void isNotStateless ()
 Marks the current function as not stateless. More...
 
template<class T >
WStatelessSlot * implementJavaScript (void(T::*method)(), const std::string &jsCode)
 Provides a JavaScript implementation for a method. More...
 
void addChild (WObject *child)
 Adds a child object. More...
 
const std::vector< WObject * > & children () const
 Returns the children.
 
WObjectparent () const
 Returns the parent object.
 

Protected Member Functions

virtual int boxPadding (Orientation orientation) const
 Returns the widget's built-in padding. More...
 
virtual int boxBorder (Orientation orientation) const
 Returns the widget's built-in border width. More...
 
virtual void render (WFlags< RenderFlag > flags)
 Renders the widget. More...
 
- Protected Member Functions inherited from Wt::WFormWidget
virtual void enableAjax ()
 Progresses to an Ajax-enabled widget. More...
 
virtual void propagateSetEnabled (bool enabled)
 Propagates that a widget was enabled or disabled through children. More...
 
- Protected Member Functions inherited from Wt::WWebWidget
virtual WStatelessSlot * getStateless (Method method)
 On-demand stateless slot implementation. More...
 
- Protected Member Functions inherited from Wt::WWidget
void setLayoutSizeAware (bool sizeAware)
 Sets the widget to be aware of its size set by a layout manager. More...
 
virtual void layoutSizeChanged (int width, int height)
 Virtual method that indicates a size change. More...
 
 WWidget (WContainerWidget *parent=0)
 Creates a widget. More...
 
virtual void dropEvent (WDropEvent dropEvent)
 Handles a drop event. More...
 
void scheduleRender (WFlags< RepaintFlag > flags=0)
 Schedules rerendering of the widget. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from Wt::WWebWidget
static WString escapeText (const WString &text, bool newlinesToo=false)
 Escape HTML control characters in the text, to display literally (deprecated). More...
 
static std::string & escapeText (std::string &text, bool newlinestoo=false)
 Escape HTML control characters in the text, to display literally (deprecated). More...
 
static bool removeScript (WString &text)
 Remove tags/attributes from text that are not passive (deprecated). More...
 
static std::string jsStringLiteral (const std::string &v, char delimiter= '\'')
 Turn a UTF8 encoded string into a JavaScript string literal. More...
 
- Static Public Member Functions inherited from Wt::WWidget
static WString tr (const char *key)
 Short hand for WString::tr() More...
 
- Static Protected Member Functions inherited from Wt::WObject
static WObjectsender ()
 Returns the sender of the current slot call. More...
 

Detailed Description

A widget that provides a single line edit.

To act upon text changes, connect a slot to the changed() signal. This signal is emitted when the user changed the content, and subsequently removes the focus from the line edit.

To act upon editing, connect a slot to the keyWentUp() signal because the keyPressed() signal is fired before the line edit has interpreted the keypress to change its text.

At all times, the current content may be accessed with the text() method.

You may specify a maximum length for the input using setMaxLength(). If you wish to provide more detailed input validation, you may set a validator using the setValidator(WValidator *) method. Validators provide, in general, both client-side validation (as visual feed-back only) and server-side validation when calling validate().

Usage example:

Wt::WLabel *label = new Wt::WLabel("Age:", w);
Wt::WLineEdit *edit = new Wt::WLineEdit("13", w);
edit->setValidator(new Wt::WIntValidator(0, 200));
label->setBuddy(edit);

The widget corresponds to the HTML <input type="text"> or <input type="password"> tag.

WLineEdit is an inline widget.

CSS

The emptyText style can be configured via .Wt-edit-emptyText, other styling can be done using inline or external CSS as appropriate.

See also
WTextArea

Member Enumeration Documentation

Enumeration that describes how the contents is displayed.

See also
setEchoMode(EchoMode)
Enumerator
Normal 

Characters are shown.

Password 

Hide the contents as for a password.

Enumeration that describes options for input masks.

See also
setInputMask()
Enumerator
KeepMaskWhileBlurred 

Keep the input mask when blurred.

Member Function Documentation

bool Wt::WLineEdit::autoComplete ( ) const

Returns auto-completion support.

See also
setAutoComplete()
int Wt::WLineEdit::boxBorder ( Orientation  orientation) const
protectedvirtual

Returns the widget's built-in border width.

This is used by the layout managers to correct for a built-in border which interferes with setting a widget's width (or height) to 100%.

A layout manager needs to set the width to 100% only for form widgets (WTextArea, WLineEdit, WComboBox, etc...). Therefore, only for those widgets this needs to return the border width (the default implementation returns 0).

For form widgets, the border width depends on the specific browser/platform combination, unless an explicit border is set for the widget.

When setting an explicit border for the widget using a style class, you will want to reimplement this method to return this border width, in case you want to set the widget inside a layout manager.

See also
boxPadding()

Reimplemented from Wt::WWidget.

int Wt::WLineEdit::boxPadding ( Orientation  orientation) const
protectedvirtual

Returns the widget's built-in padding.

This is used by the layout managers to correct for a built-in padding which interferes with setting a widget's width (or height) to 100%.

A layout manager needs to set the width to 100% only for form widgets (WTextArea, WLineEdit, WComboBox, etc...). Therefore, only for those widgets this needs to return the padding (the default implementation returns 0).

For form widgets, the padding depends on the specific browser/platform combination, unless an explicit padding is set for the widget.

When setting an explicit padding for the widget using a style class, you will want to reimplement this method to return this padding in case you want to set the widget inside a layout manager.

See also
boxBorder()

Reimplemented from Wt::WWidget.

Reimplemented in Wt::WAbstractSpinBox.

int Wt::WLineEdit::cursorPosition ( ) const

Returns the current cursor position.

Returns -1 if the widget does not have the focus.

WString Wt::WLineEdit::displayText ( ) const

Returns the displayed text.

If echoMode() is set to Normal, and no input mask is defined, this returns the same as text().

If an input mask is defined, then the text is returned including space characters.

If echoMode() is set to Password, then a string of asterisks is returned equal to the length of the text.

See also
setText()
EchoMode Wt::WLineEdit::echoMode ( ) const

Returns the echo mode.

See also
setEchoMode(EchoMode)
bool Wt::WLineEdit::hasSelectedText ( ) const

Returns whether there is selected text.

See also
selectedtext()
WString Wt::WLineEdit::inputMask ( ) const

Returns the input mask.

See also
setInputMask()
int Wt::WLineEdit::maxLength ( ) const

Returns the maximum length of text that can be entered.

See also
setMaxLength(int)
void Wt::WLineEdit::render ( WFlags< RenderFlag flags)
protectedvirtual

Renders the widget.

This function renders the widget (or an update for the widget), after this has been scheduled using scheduleRender().

The default implementation will render the widget by serializing changes to JavaScript and HTML. You may want to reimplement this widget if you have been postponing some of the layout / rendering implementation until the latest moment possible. In that case you should make sure you call the base implementation however.

Reimplemented from Wt::WFormWidget.

Reimplemented in Wt::WDateEdit, Wt::WTimeEdit, Wt::WDoubleSpinBox, and Wt::WAbstractSpinBox.

WString Wt::WLineEdit::selectedText ( ) const

Returns the currently selected text.

Returns an empty string if there is currently no selected text.

See also
hasSelectedText()
int Wt::WLineEdit::selectionStart ( ) const

Returns the current selection start.

Returns -1 if there is no selected text.

See also
hasSelectedText(), selectedText()
void Wt::WLineEdit::setAutoComplete ( bool  enabled)

Sets (built-in browser) autocomplete support.

Depending on the user agent, this may assist the user in filling in text for common input fields (e.g. address information) based on some heuristics.

The default value is true.

void Wt::WLineEdit::setEchoMode ( EchoMode  echoMode)

Sets the echo mode.

The default echo mode is Normal.

void Wt::WLineEdit::setInputMask ( const WString mask = "",
WFlags< InputMaskFlag flags = 0 
)

Sets the input mask.

If no input mask is supplied, or the given input mask is empty, no input mask is applied.

The following characters can be used in the input mask:

Character Description
A ASCII alphabetic character: A-Z, a-z (required)
a ASCII alphabetic character: A-Z, a-z (optional)
N ASCII alphanumeric character: A-Z, a-z, 0-9 (required)
n ASCII alphanumeric character: A-Z, a-z, 0-9 (optional)
XAny character (required)
xAny character (optional)
9Digit: 0-9 (required)
0Digit: 0-9 (optional)
DNonzero digit: 1-9 (required)
dNonzero digit: 1-9 (optional)
#Digit or sign: 0-9, -, + (required)
H Hexadecimal character: A-F, a-f, 0-9 (required)
h Hexadecimal character: A-F, a-f, 0-9 (optional)
BBinary digit: 0-1 (required)
bBinary digit: 0-1 (optional)

The distinction between required and optional characters won't be apparent on the client side, but will affect the result of validate().

There are also a few special characters, that won't be checked against, but modify the value in some way:

CharacterDescription
>The following characters are uppercased
<The following characters are lowercased
! The casing of the following characters remains the same

A backslash ('\') can be used to escape any of the mask characters or modifiers, so that they can be used verbatim in the input mask.

If the mask ends with a semicolon (';') followed by a character, this character will be used on the client side to display spaces. This defaults to the space (' ') character. The space character will be removed from the value of this WLineEdit.

Examples:

Input maskNotes
009.009.009.009;_
IP address. Spaces are denoted by '_'. Will validate if there is at least one digit per segment.
9999-99-99
Date, in yyyy-MM-dd notation. Spaces are denoted by ' '. Will validate if all digits are filled in.
>HH:HH:HH:HH:HH:HH;_
MAC address. Spaces are denoted by '_'. Will validate if all hexadecimal characters are filled in. All characters will be formatted in uppercase.

Input masks are enforced by JavaScript on the client side. Without JavaScript or using setText(), however, non-compliant strings can be entered. This does not result in an error: any non-compliant characters will be removed from the input and this action will be logged.

void Wt::WLineEdit::setMaxLength ( int  length)

Specifies the maximum length of text that can be entered.

A value <= 0 indicates that there is no limit.

The default value is -1.

void Wt::WLineEdit::setSelection ( int  start,
int  length 
)

Selects length characters starting from the start position.

See also
selectedtext()
void Wt::WLineEdit::setText ( const WString text)
virtual

Sets the content of the line edit.

The default value is "".

See also
text()

Reimplemented in Wt::WAbstractSpinBox.

void Wt::WLineEdit::setTextSize ( int  chars)

Specifies the width of the line edit in number of characters.

This specifies the width of the line edit that is roughly equivalent with chars characters. This does not limit the maximum length of a string that may be entered, which may be set using setMaxLength(int).

The default value is 10.

void Wt::WLineEdit::setValueText ( const WString value)
virtual

Sets the current value.

Calls setText().

Implements Wt::WFormWidget.

const WString& Wt::WLineEdit::text ( ) const

Returns the current content.

See also
setText()
EventSignal & Wt::WLineEdit::textInput ( )

Event signal emitted when the text in the input field changed.

This signal is emitted whenever the text contents has changed. Unlike the changed() signal, the signal is fired on every change, not only when the focus is lost. Unlike the keyPressed() signal, this signal is fired also for other events that change the text, such as paste actions.

See also
keyPressed(), changed()
int Wt::WLineEdit::textSize ( ) const

Returns the current width of the line edit in number of characters.

See also
setTextSize(int)
WValidator::State Wt::WLineEdit::validate ( )
virtual

Validates the field.

See also
validated()

Reimplemented from Wt::WFormWidget.

Reimplemented in Wt::WAbstractSpinBox.

WString Wt::WLineEdit::valueText ( ) const
virtual

Returns the current value.

Returns text().

Implements Wt::WFormWidget.


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