Examples of org.apache.wicket.util.convert.IConverter

org.apache.wicket.util.convert.IConverter
Converts input to output and vice versa. Converters are needed in web applications because we have to switch between Java objects on the server and Strings in the browser output and input.
Output conversion, which is handled by {@link #convertToString(Object,Locale)}, is typically used by components when they render, so that a date can be displayed as '12/12/2007'. Input conversion, handled by {@link #convertToObject(String,Locale)}, is typically used by form components to interpret incoming values Such values are strings as they are send as request parameters from browsers. An incoming value could be the string '12/12/2007' which could be translated to a corresponding {@link Date} object.Notice that incoming value, when used by a FormComponent, will never be null because before validation form components perform the required (see {@link FormComponent#isRequired()} checkwhich errors out on null values. In the case the FormComponent is not required and the user enters a null value converters will not be invoked because no type conversion is necessary.
@author Eelco Hillenius @author Jonathan Locke @param < C> The object to convert from and to String @see org.apache.wicket.Component#getConverter(Class) @see org.apache.wicket.Application#getConverterLocator()

  public final String getModelObjectAsString(final Object modelObject)
  {
    if (modelObject != null)
    {
      // Get converter
      final IConverter converter = getConverter(modelObject.getClass());


      // Model string from property
      final String modelString = converter.convertToString(modelObject, getLocale());


      if (modelString != null)
      {
        // If we should escape the markup
        if (getFlag(FLAG_ESCAPE_MODEL_STRINGS))

View Full Code Here

      // TextField using a custom converter.
      add(new TextField("urlProperty", URL.class)
      {
        public IConverter getConverter(final Class type)
        {
          return new IConverter()
          {
            public Object convertToObject(String value, Locale locale)
            {
              try
              {

View Full Code Here

      // don't provide a format
    }


    if (format == null)
    {
      IConverter converter = component.getConverter(DateTime.class);
      if (!(converter instanceof DateConverter))
      {
        converter = component.getConverter(Date.class);
      }
      format = ((SimpleDateFormat)((DateConverter)converter).getDateFormat(component

View Full Code Here

      // don't provide a format
    }


    if (format == null)
    {
      IConverter converter = component.getConverter(DateTime.class);
      if (!(converter instanceof DateConverter))
      {
        converter = component.getConverter(Date.class);
      }
      format = ((SimpleDateFormat)((DateConverter)converter).getDateFormat(component

View Full Code Here

    Class<T> objectClass = (Class<T>)(objectValue == null ? null : objectValue.getClass());


    String displayValue = "";
    if (objectClass != null && objectClass != String.class)
    {
      final IConverter converter = getConverter(objectClass);


      displayValue = converter.convertToString(objectValue, getLocale());
    }
    else if (objectValue != null)
    {
      displayValue = objectValue.toString();
    }

View Full Code Here

      Class<?> objectClass = displayValue == null ? null : displayValue.getClass();
      // Get label for choice
      String label = "";
      if (objectClass != null && objectClass != String.class)
      {
        IConverter converter = getConverter(objectClass);
        label = converter.convertToString(displayValue, getLocale());
      }
      else if (displayValue != null)
      {
        label = displayValue.toString();
      }

View Full Code Here

    if (modelObject != null)
    {
      // Get converter
      final Class<?> objectClass = modelObject.getClass();


      final IConverter converter = getConverter(objectClass);


      // Model string from property
      final String modelString = converter.convertToString(modelObject, getLocale());


      if (modelString != null)
      {
        // If we should escape the markup
        if (getFlag(FLAG_ESCAPE_MODEL_STRINGS))

View Full Code Here

      // Get label for choice
      String label = "";


      if (objectClass != null && objectClass != String.class)
      {
        final IConverter converter = getConverter(objectClass);
        label = converter.convertToString(displayValue, getLocale());
      }
      else if (displayValue != null)
      {
        label = displayValue.toString();
      }

View Full Code Here

      private static final long serialVersionUID = 1L;


      @Override
      public IConverter getConverter(Class<?> type)
      {
        IConverter c = AjaxEditableChoiceLabel.this.getConverter(type);
        return c != null ? c : super.getConverter(type);
      }


      @SuppressWarnings("unchecked")
      @Override
      protected void onComponentTagBody(MarkupStream markupStream, ComponentTag openTag)
      {
        String displayValue = getDefaultModelObjectAsString();
        if (renderer != null)
        {
          Object displayObject = renderer.getDisplayValue((T)getDefaultModelObject());
          Class<?> objectClass = (displayObject == null ? null : displayObject.getClass());




          if (objectClass != null && objectClass != String.class)
          {
            final IConverter converter = Application.get()
              .getConverterLocator()
              .getConverter(objectClass);


            displayValue = converter.convertToString(displayObject, getLocale());
          }
        }


        if (Strings.isEmpty(displayValue))
        {

View Full Code Here

      // don't provide a format
    }


    if (format == null)
    {
      IConverter converter = component.getConverter(DateTime.class);
      if (!(converter instanceof DateConverter))
      {
        converter = component.getConverter(Date.class);
      }
      format = ((SimpleDateFormat)((DateConverter)converter).getDateFormat(component

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.wicket.util.convert.IConverter

com.googlecode.wicketwebbeans.datepicker.PopupDatePicker

com.googlecode.wicketwebbeans.model.BeanPropertyModel

com.inmethod.grid.column.PropertyColumn

fiftyfive.wicket.form.ChoicesListView

org.apache.wicket.Component

org.apache.wicket.ConverterLocator

org.apache.wicket.core.util.string.interpolator.ConvertingPropertyVariableInterpolator

org.apache.wicket.core.util.string.interpolator.PropertyVariableInterpolator

org.apache.wicket.examples.base.markdown.MarkdownLabel

org.apache.wicket.examples.forminput.FormInput$InputForm

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.