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Diffstat (limited to 'src/com/vaadin/demo/featurebrowser/FormExample.java')
| -rw-r--r-- | src/com/vaadin/demo/featurebrowser/FormExample.java | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/src/com/vaadin/demo/featurebrowser/FormExample.java b/src/com/vaadin/demo/featurebrowser/FormExample.java deleted file mode 100644 index 52a2a98d80..0000000000 --- a/src/com/vaadin/demo/featurebrowser/FormExample.java +++ /dev/null @@ -1,230 +0,0 @@ -package com.vaadin.demo.featurebrowser; - -import com.vaadin.data.Item; -import com.vaadin.data.Validator; -import com.vaadin.data.Validator.InvalidValueException; -import com.vaadin.data.util.BeanItem; -import com.vaadin.ui.Button; -import com.vaadin.ui.Component; -import com.vaadin.ui.CustomComponent; -import com.vaadin.ui.DefaultFieldFactory; -import com.vaadin.ui.Field; -import com.vaadin.ui.Form; -import com.vaadin.ui.HorizontalLayout; -import com.vaadin.ui.TextField; -import com.vaadin.ui.VerticalLayout; -import com.vaadin.ui.Button.ClickEvent; -import com.vaadin.ui.Button.ClickListener; - -/** - * This example demonstrates the most important features of the Form component: - * binding Form to a JavaBean so that form fields are automatically generated - * from the bean properties, creation of custom field editors using a - * FieldFactory, customizing the form without FieldFactory, buffering - * (commit/discard) and validation. Please note that the example is quite a bit - * more complex than real use, as it tries to demonstrate more features than - * needed in general case. - */ -@SuppressWarnings("serial") -public class FormExample extends CustomComponent { - - static final String cities[] = { "Amsterdam", "Berlin", "Helsinki", - "Hong Kong", "London", "Luxemburg", "New York", "Oslo", "Paris", - "Rome", "Stockholm", "Tokyo", "Turku" }; - - /** Compose the demo. */ - public FormExample() { - - // Example data model - final Address dataModel = new Address(); - Button peekDataModelState = new Button("Show the data model state", - new Button.ClickListener() { - - public void buttonClick(ClickEvent event) { - getWindow().showNotification( - dataModel.getAddressAsText()); - } - }); - - // Example form - final AddressForm form = new AddressForm("Contact Information"); - form.setDataSource(dataModel); - form - .setDescription("Please enter valid name and address. Fields marked with * are required. " - + "If you try to commit with invalid values, a form error message is displayed. " - + "(Address is required but failing to give it a value does not display an error.)"); - - // Layout the example - VerticalLayout root = new VerticalLayout(); - root.setMargin(true); - root.setSpacing(true); - root.addComponent(form); - root.addComponent(peekDataModelState); - setCompositionRoot(root); - } - - public static class AddressForm extends Form { - public AddressForm(String caption) { - - setCaption(caption); - - // Use custom field factory to modify the defaults on how the - // components are created - setFormFieldFactory(new MyFieldFactory()); - - // Add Commit and Discard controls to the form. - - Button commit = new Button("Save", new ClickListener() { - - public void buttonClick(ClickEvent event) { - try { - commit(); - } catch (InvalidValueException e) { - // Failed to commit. The validation errors are - // automatically shown to the user. - } - } - - }); - - Button discard = new Button("Reset", this, "discard"); - HorizontalLayout footer = new HorizontalLayout(); - footer.addComponent(commit); - footer.addComponent(discard); - setFooter(footer); - } - - public void setDataSource(Address dataModel) { - - // Set the form to edit given datamodel by converting pojo used as - // the datamodel to Item - setItemDataSource(new BeanItem(dataModel)); - - // Ensure that the fields are shown in correct order as the - // datamodel does not force any specific order. - setVisibleItemProperties(new String[] { "name", "streetAddress", - "postalCode", "city" }); - - // For examples sake, customize some of the form fields directly - // here. The alternative way is to use custom field factory as shown - // above. - getField("name").setRequired(true); - getField("name").setDescription("Please enter name"); - getField("name").setRequiredError("Name is missing"); - getField("streetAddress").setRequired(true); // No error message - getField("streetAddress").setDescription( - "Please enter street adderss."); - getField("postalCode").setRequired(true); // No error message - getField("postalCode").setDescription( - "Please enter postal code. Example: 12345."); - replaceWithSelect("city", cities, cities).setNewItemsAllowed(true); - getField("city") - .setDescription( - "Select city from list or type it. City field is not required."); - - // Set the form to act immediately on user input. This is - // automatically transports data between the client and the server - // to do server-side validation. - setImmediate(true); - - // Enable buffering so that commit() must be called for the form - // before input is written to the data. (Form input is not written - // immediately through to the underlying object.) - setWriteThrough(false); - } - } - - /** - * This is example on how to customize field creation. Any kind of field - * components could be created on the fly. - */ - static class MyFieldFactory extends DefaultFieldFactory { - - @Override - public Field createField(Item item, Object propertyId, - Component uiContext) { - - Field field = super.createField(item, propertyId, uiContext); - - if ("postalCode".equals(propertyId)) { - ((TextField) field).setColumns(5); - field.addValidator(new PostalCodeValidator()); - } - - return field; - } - - } - - /** - * This is an example of how to create a custom validator for automatic - * input validation. - */ - static class PostalCodeValidator implements Validator { - - public boolean isValid(Object value) { - if (value == null || !(value instanceof String)) { - return false; - } - - return ((String) value).matches("[0-9]{5}"); - } - - public void validate(Object value) throws InvalidValueException { - if (!isValid(value)) { - throw new InvalidValueException( - "Postal code must be a five digit number."); - } - } - } - - /** - * Contact information data model created as POJO. Note that in many cases - * it would be a good idea to implement Item -interface for the datamodel to - * make it directly bindable to form (without BeanItem wrapper) - */ - public static class Address { - String name = ""; - String streetAddress = ""; - String postalCode = ""; - String city; - - public String getAddressAsText() { - return name + "\n" + streetAddress + "\n" + postalCode + " " - + (city == null ? "" : city); - } - - public void setName(String name) { - this.name = name; - } - - public String getName() { - return name; - } - - public void setStreetAddress(String address) { - streetAddress = address; - } - - public String getStreetAddress() { - return streetAddress; - } - - public void setPostalCode(String postalCode) { - this.postalCode = postalCode; - } - - public String getPostalCode() { - return postalCode; - } - - public void setCity(String city) { - this.city = city; - } - - public String getCity() { - return city; - } - } - -} |