Examples of org.apache.wicket.markup.html.form.FormComponent

Package org.apache.wicket.markup.html.form

Examples of org.apache.wicket.markup.html.form.FormComponent

org.apache.wicket.markup.html.form.FormComponent
An HTML form component knows how to validate itself. Validators that implement IValidator can be added to the component. They will be evaluated in the order they were added and the first Validator that returns an error message determines the error message returned by the component.
FormComponents are not versioned by default. If you need versioning for your FormComponents, you will need to call Form.setVersioned(true), which will set versioning on for the form and all form component children.
If this component is required and that fails, the error key that is used is the "Required"; if the type conversion fails, it will use the key "IConverter" if the conversion failed in a converter, or "ConversionError" if type was explicitly specified via {@link #setType(Class)} or a{@link IPropertyReflectionAwareModel} was used. Notice that both "IConverter" and"ConversionError" have a more specific variant of "key.classname" where classname is the type that we failed to convert to. Classname is not full qualified, so only the actual name of the class is used. Property expressions that can be used in error messages are:
- ${input}: the input the user did give
- ${name}: the name of the component that failed
- ${label}: the label of the component
@author Jonathan Locke @author Eelco Hillenius @author Johan Compagner @author Igor Vaynberg (ivaynberg) @param < T> The model object type

  {
    // initialize
    this.form.loadPersistentFormComponentValues();


    // validate
    FormComponent username = (FormComponent)panel.get("signInForm:username");


    Assert.assertNotNull(username);


    Assert.assertNotNull(cookieUsername);


    Assert.assertEquals(cookieUsername.getValue(), username.getModelObjectAsString());
  }

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    {
      @SuppressWarnings("unchecked")
      @Override
      public void onFormComponent(FormComponent<?> formComponent2, IVisit<Void> visit)
      {
        final FormComponent formComponent=formComponent2;
        // do nothing for invisible component
        if (!formComponent.isVisibleInHierarchy())
        {
          return;
        }


        // if component is text field and do not have exist value, fill
        // blank String if required
        if (formComponent instanceof AbstractTextComponent)
        {
          if (Strings.isEmpty(formComponent.getValue()))
          {
            if (fillBlankString)
            {
              setFormComponentValue(formComponent, "");
            }
          }
          else
          {
            setFormComponentValue(formComponent, formComponent.getValue());
          }
        }
        else if ((formComponent instanceof DropDownChoice) ||
          (formComponent instanceof RadioChoice) || (formComponent instanceof CheckBox))
        {
          setFormComponentValue(formComponent, formComponent.getValue());
        }
        else if (formComponent instanceof ListMultipleChoice)
        {
          final String[] modelValues = formComponent.getValue().split(
            FormComponent.VALUE_SEPARATOR);
          for (String modelValue : modelValues)
          {
            addFormComponentValue(formComponent, modelValue);
          }
        }
        else if (formComponent instanceof CheckGroup)
        {
          final Collection<?> checkGroupValues = (Collection<?>)formComponent.getDefaultModelObject();
          formComponent.visitChildren(Check.class, new IVisitor<Component, Void>()
          {
            public void component(final Component component, final IVisit<Void> visit)
            {
              if (checkGroupValues.contains(component.getDefaultModelObject()))
              {
                addFormComponentValue(formComponent,
                  ((Check<?>)component).getValue());
              }
            }
          });
        }
        else if (formComponent instanceof RadioGroup)
        {
          // TODO 1.5: see if all these transformations can be factored out into
          // checkgroup/radiogroup by them implementing some sort of interface {
          // getValue(); } otherwise all these implementation details leak into the tester
          final Object value = formComponent.getDefaultModelObject();
          if (value != null)
          {
            formComponent.visitChildren(Radio.class, new IVisitor<Component, Void>()
            {
              public void component(final Component component,
                final IVisit<Void> visit)
              {
                if (value.equals(component.getDefaultModelObject()))

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   */
  public void setFile(final String formComponentId, final File file, final String contentType)
  {
    checkClosed();


    FormComponent formComponent = (FormComponent)workingForm.get(formComponentId);


    if (formComponent instanceof FileUploadField == false)
    {
      throw new IllegalArgumentException("'" + formComponentId + "' is not " +
        "a FileUploadField. You can only attach a file to form " +
        "component of this type.");
    }


    MockHttpServletRequest servletRequest = tester.getRequest();
    servletRequest.addFile(formComponent.getInputName(), file, contentType);
  }

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    // add form with markup id setter so it can be updated via ajax
    Form<Bean> form = new Form<Bean>("form", new CompoundPropertyModel<Bean>(bean));
    add(form);
    form.setOutputMarkupId(true);


    FormComponent fc;


    // add form components to the form as usual


    fc = new RequiredTextField<String>("name");
    fc.add(StringValidator.minimumLength(4));
    fc.setLabel(new ResourceModel("label.name"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("name-label", fc));


    fc = new RequiredTextField<String>("email");
    fc.add(EmailAddressValidator.getInstance());
    fc.setLabel(new ResourceModel("label.email"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("email-label", fc));


    // attach an ajax validation behavior to all form component's onkeydown

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    // add form with markup id setter so it can be updated via ajax
    Form form = new Form("form", new CompoundPropertyModel(bean));
    add(form);
    form.setOutputMarkupId(true);


    FormComponent fc;


    // add form components to the form as usual


    fc = new RequiredTextField("name");
    fc.add(StringValidator.minimumLength(4));
    fc.setLabel(new ResourceModel("label.name"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("name-label", fc));


    fc = new RequiredTextField("email");
    fc.add(EmailAddressValidator.getInstance());
    fc.setLabel(new ResourceModel("label.email"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("email-label", fc));


    // attach an ajax validation behavior to all form component's onkeydown

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    // add form with markup id setter so it can be updated via ajax
    Form<Bean> form = new Form<Bean>("form", new CompoundPropertyModel<Bean>(bean));
    add(form);
    form.setOutputMarkupId(true);


    FormComponent fc;


    // add form components to the form as usual


    fc = new RequiredTextField<String>("name");
    fc.add(StringValidator.minimumLength(4));
    fc.setLabel(new ResourceModel("label.name"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("name-label", fc));


    fc = new RequiredTextField<String>("email");
    fc.add(EmailAddressValidator.getInstance());
    fc.setLabel(new ResourceModel("label.email"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("email-label", fc));


    // attach an ajax validation behavior to all form component's onkeydown

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   */
  public void setFile(final String formComponentId, final File file, final String contentType)
  {
    checkClosed();


    FormComponent formComponent = (FormComponent)workingForm.get(formComponentId);


    if (formComponent instanceof FileUploadField == false)
    {
      throw new IllegalArgumentException("'" + formComponentId + "' is not " +
        "a FileUploadField. You can only attach a file to form " +
        "component of this type.");
    }


    MockHttpServletRequest servletRequest = baseWicketTester.getServletRequest();
    servletRequest.addFile(formComponent.getInputName(), file, contentType);
  }

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            feedback.setOutputMarkupId(true);
            add(feedback);
            this.metaData = jmetaData;
            this.oldMetaData = jmetaData;
            Form metaDataForm = new Form("metaDataForm");
            FormComponent fc;
            fc = new RequiredTextField("name", new PropertyModel(this,
                    "metaData.name"));
            fc.add(StringValidator.minimumLength(2));
            metaDataForm.add(fc);
            metaDataForm.add(new Label("name-label", new ResourceModel(
                    "metedataTab.name")));
            fc = new RequiredTextField("language", new PropertyModel(this,
                    "metaData.language"));
            fc.add(StringValidator.minimumLength(2));
            metaDataForm.add(fc);
            metaDataForm.add(new Label("language-label", new ResourceModel(
                    "metedataTab.language")));
            fc = new RequiredTextField("metaValue", new PropertyModel(this,
                    "metaData.value"));
            fc.add(StringValidator.minimumLength(2));
            metaDataForm.add(fc);
            metaDataForm.add(new Label("value-label", new ResourceModel(
                    "metedataTab.value")));
            metaDataForm.add(new AjaxButton("save", new ResourceModel(
                    "common.save"), metaDataForm)

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    Bean bean = new Bean();
    Form<Bean> form = new Form<>("form", new CompoundPropertyModel<>(bean));
    add(form);
    form.setOutputMarkupId(true);


    FormComponent fc;


    // add form components to the form as usual


    fc = new RequiredTextField<>("name");
    fc.add(new StringValidator(4, null));
    fc.setLabel(new ResourceModel("label.name"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("name-label", fc));


    fc = new RequiredTextField<>("email");
    fc.add(EmailAddressValidator.getInstance());
    fc.setLabel(new ResourceModel("label.email"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("email-label", fc));


    // attach an ajax validation behavior to all form component's keydown

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    Bean bean = new Bean();
    Form<Bean> form = new Form<Bean>("form", new CompoundPropertyModel<Bean>(bean));
    add(form);
    form.setOutputMarkupId(true);


    FormComponent fc;


    // add form components to the form as usual


    fc = new RequiredTextField<String>("name");
    fc.add(new StringValidator(4, null));
    fc.setLabel(new ResourceModel("label.name"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("name-label", fc));


    fc = new RequiredTextField<String>("email");
    fc.add(EmailAddressValidator.getInstance());
    fc.setLabel(new ResourceModel("label.email"));


    form.add(fc);
    form.add(new SimpleFormComponentLabel("email-label", fc));


    // attach an ajax validation behavior to all form component's keydown

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