DoubleRenderer class / dart_web_toolkit_text Library / API Reference / Dart Web Toolkit

DoubleRenderer class

A localized renderer based on {@link NumberFormat#getDecimalFormat}.

class DoubleRenderer extends AbstractRenderer<double> {

 static DoubleRenderer _INSTANCE;

 /**
  * Returns the instance.
  */
 factory DoubleRenderer.instance() {
   if (_INSTANCE == null) {
     _INSTANCE = new DoubleRenderer();
   }
   return _INSTANCE;
 }

 DoubleRenderer();

 String render(double object) {
   if (object == null) {
     return "";
   }

   return NumberFormat.getDecimalFormat().formatDouble(object);
 }
}

Extends

AbstractRenderer<double> > DoubleRenderer

Constructors

new DoubleRenderer() #

Creates a new Object instance.

Object instances have no meaningful state, and are only useful through their identity. An Object instance is equal to itself only.

docs inherited from Object

DoubleRenderer();

factory DoubleRenderer.instance() #

Returns the instance.

factory DoubleRenderer.instance() {
 if (_INSTANCE == null) {
   _INSTANCE = new DoubleRenderer();
 }
 return _INSTANCE;
}

Methods

String render(double object) #

Renders {@code object} as plain text. Should never throw any exceptions!

docs inherited from Renderer<T>

String render(double object) {
 if (object == null) {
   return "";
 }

 return NumberFormat.getDecimalFormat().formatDouble(object);
}

void renderTo(T object, Appendable appendable) #

inherited from AbstractRenderer

Renders {@code object} as plain text, appended directly to {@code appendable}. Should never throw any exceptions except if {@code appendable} throws an {@code IOException}.

void renderTo(T object, Appendable appendable) {
 appendable.append(render(object));
}