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


      public RegisterForm(String id)
      {
         super(id);
         add(new PageLink("cancel", Main.class));
         FormComponent password = new PasswordTextField("password").setRequired(true);
         FormComponent verify = new PasswordTextField("verify").setRequired(true);
         add(new FormInputBorder("passwordBorder", "Password", password , new PropertyModel(user, "password")));
         add(new FormInputBorder("verifyBorder", "Verify Password", verify, new PropertyModel(this, "verify")));
         add(new ComponentFeedbackPanel("messages", this));
         add(new EqualInputValidator(password, verify));
      }

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            public Object getTarget()
            {
               return user;
            }
         }));
         FormComponent password = new PasswordTextField("password").setRequired(true);
         FormComponent verify = new PasswordTextField("verify").setRequired(true);
         add(new FormInputBorder("passwordDecorate", "Password", password , new SeamPropertyModel("password")
         {
            @Override
            public Object getTarget()
            {

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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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            fragment.add( DateLabel.withConverter("date", model, new InternalDateConverter()) );
        }
        else {
            fragment = new Fragment("frag", "editor");


            FormComponent dateField = DateTextField.withConverter("dateTextField", model, new InternalDateConverter());
            setFieldParameters(dateField);
            fragment.add(dateField);
            
            dateField.add(new DatePicker() {
                private static final long serialVersionUID = 1L;
                @Override
                protected boolean enableMonthYearSelection()
                {
                    return false;

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            fragment.add(label);
        }
        else {
            fragment = new Fragment("frag", "editor");


            final FormComponent dateField = new DateTextField("dateTextField", model) {
                private static final long serialVersionUID = 1L;
                @Override
                public IConverter getConverter(Class type)
                {
                    return converter;

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        if (component instanceof MarkupContainer) {
            MarkupContainer container = (MarkupContainer)component;
            container.visitChildren(FormComponent.class, new IVisitor<Component>() {
                public Object component(Component component) 
                {
                    FormComponent formComponent = (FormComponent)component;
                    formComponent.setLabel( new Model(propertyMeta.getLabel()) );
                    formComponent.add( new ErrorHighlightingBehavior() );
                    return IVisitor.CONTINUE_TRAVERSAL;
                }                
            });
        }
    }

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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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  {
    // initialize
    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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   *            index of the selectable option, starting from 0
   */
  public void select(String formComponentId, int index)
  {
    checkClosed();
    FormComponent component = (FormComponent)workingForm.get(formComponentId);


    ChoiceSelector choiceSelector = choiceSelectorFactory.create(component);
    choiceSelector.doSelect(index);
    if (component instanceof DropDownChoice)
    {

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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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