Wt::WDoubleSpinBox Class Reference

An input control for fixed point numbers. More...

#include <Wt/WDoubleSpinBox>

Inheritance diagram for Wt::WDoubleSpinBox:

Public Member Functions
	WDoubleSpinBox (WContainerWidget *parent=0)
	Creates a spin-box. More...
void	setMinimum (double minimum)
	Sets the minimum value. More...
double	minimum () const
	Returns the minimum value. More...
void	setMaximum (double maximum)
	Sets the maximum value. More...
double	maximum () const
	Returns the maximum value. More...
void	setRange (double minimum, double maximum)
	Sets the range. More...
void	setSingleStep (double step)
	Sets the step value. More...
double	singleStep () const
	Returns the step value. More...
void	setDecimals (int precision)
	Sets the precision. More...
int	decimals () const
	Returns the precision. More...
void	setValue (double value)
	Sets the value. More...
double	value () const
	Returns the value. More...
Signal< double > &	valueChanged ()
	A signal that indicates when the value has changed. More...
virtual void	refresh ()
	Refresh the widget. More...
Public Member Functions inherited from Wt::WAbstractSpinBox
void	setNativeControl (bool nativeControl)
	Configures whether a native HTML5 control should be used. More...
bool	nativeControl () const
	Returns whether a native HTML5 control is used. More...
void	setPrefix (const WString &prefix)
	Sets a prefix. More...
const WString &	prefix () const
	Returns the prefix. More...
void	setSuffix (const WString &suffix)
	Sets a suffix. More...
const WString &	suffix () const
	Returns the suffix. More...
virtual void	setText (const WString &text)
	Sets the content of the line edit. More...
virtual WValidator::State	validate ()
	Validates the field. More...
Public Member Functions inherited from Wt::WLineEdit
	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...
const WString &	text () 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...
EventSignal &	textInput ()
	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...
WLabel *	label () 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 WValidator *	validator () 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 WString &	emptyText () const
	Returns the placeholder text (deprecated). More...
virtual void	setPlaceholderText (const WString &placeholder)
	Sets the placeholder text. More...
const WString &	placeholderText () const
	Returns the placeholder text. More...
EventSignal &	changed ()
	Signal emitted when the value was changed. More...
EventSignal &	selected ()
	Signal emitted when ??
Signal< WValidator::Result > &	validated ()
	Signal emitted when the widget is being validated. 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...
EventSignal &	enterPressed ()
	Event signal emitted when enter was pressed. More...
EventSignal &	escapePressed ()
	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< Side >	clearSides () 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 WCssDecorationStyle &	decorationStyle ()
	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 WWidget *	find (const std::string &name)
	Finds a descendent widget by name. More...
virtual WWidget *	findById (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...
Signal &	childrenChanged ()
	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...
EventSignal &	blurred ()
	Signal emitted when the widget lost focus. More...
EventSignal &	focussed ()
	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...
WWidget *	parent () 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.
WObject *	parent () const
	Returns the parent object.

Protected Member Functions
virtual void	render (WFlags< RenderFlag > flags)
	Renders the widget. More...
Protected Member Functions inherited from Wt::WAbstractSpinBox
	WAbstractSpinBox (WContainerWidget *parent=0)
	Constructor.
virtual int	boxPadding (Orientation orientation) const
	Returns the widget's built-in padding. More...
Protected Member Functions inherited from Wt::WLineEdit
virtual int	boxBorder (Orientation orientation) const
	Returns the widget's built-in border width. 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
Public Types inherited from Wt::WLineEdit
Public Types inherited from Wt::WObject
typedef void(WObject::*	Method) ()
	Typedef for a WObject method without arguments.
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 WObject *	sender ()
	Returns the sender of the current slot call. More...

Detailed Description

An input control for fixed point numbers.

The spin box provides a control for entering a fixed point number. It consists of a line edit, and buttons which allow to increase or decrease the value. If you rather need input of an integer number number, use WSpinBox instead.

WDoubleSpinBox is an inline widget.

See also

WSpinBox

Note

A spinbox configures a validator for validating the input. Therefore you cannot set a validator yourself.

Constructor & Destructor Documentation

Wt::WDoubleSpinBox::WDoubleSpinBox

(

WContainerWidget *

parent = 0

)

Creates a spin-box.

The range is (0.0 - 99.99), the step size 1.0, and the spin box has a precision of 2 decimals.

The initial value is 0.0.

Member Function Documentation

int Wt::WDoubleSpinBox::decimals ( ) const

virtual

Returns the precision.

See also

setDecimals()

Implements Wt::WAbstractSpinBox.

double Wt::WDoubleSpinBox::maximum

(

)

const

Returns the maximum value.

See also

setMaximum()

double Wt::WDoubleSpinBox::minimum

(

)

const

Returns the minimum value.

See also

setMinimum()

void Wt::WDoubleSpinBox::refresh ( )

virtual

Refresh the widget.

The refresh method is invoked when the locale is changed using WApplication::setLocale() or when the user hit the refresh button.

The widget must actualize its contents in response.

Note

This does *not* rerender the widget! Calling refresh() usually does not have any effect (unless you've reimplemented refresh() to attach to it an effect).

Reimplemented from Wt::WAbstractSpinBox.

void Wt::WDoubleSpinBox::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::WAbstractSpinBox.

void Wt::WDoubleSpinBox::setDecimals

(

int

precision

)

Sets the precision.

This sets the number of digits after the decimal point shown

The default precision is 2.

void Wt::WDoubleSpinBox::setMaximum

(

double

maximum

)

Sets the maximum value.

The default value is 99.99.

void Wt::WDoubleSpinBox::setMinimum

(

double

minimum

)

Sets the minimum value.

The default value is 0.0.

void Wt::WDoubleSpinBox::setRange	(	double	minimum,
		double	maximum
	)

Sets the range.

See also

setMinimum(), setMaximum()

void Wt::WDoubleSpinBox::setSingleStep

(

double

step

)

Sets the step value.

The default value is 1.0.

void Wt::WDoubleSpinBox::setValue

(

double

value

)

Sets the value.

value must be a value between minimum() and maximum().

The default value is 0

double Wt::WDoubleSpinBox::singleStep

(

)

const

Returns the step value.

See also

setSingleStep()

double Wt::WDoubleSpinBox::value

(

)

const

Returns the value.

Note

This value may not correctly reflect the valueText() of the spin box if valueText() is empty or if the contents are not in a valid state.

Signal<double>& Wt::WDoubleSpinBox::valueChanged

(

)

A signal that indicates when the value has changed.

This signal is emitted when setValue() is called.

See also

setValue()