diff options
Diffstat (limited to 'java-vaadin/src/ch/asynk/helloworld/DataMappingLayout.java')
| -rw-r--r-- | java-vaadin/src/ch/asynk/helloworld/DataMappingLayout.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/java-vaadin/src/ch/asynk/helloworld/DataMappingLayout.java b/java-vaadin/src/ch/asynk/helloworld/DataMappingLayout.java new file mode 100644 index 0000000..42801d8 --- /dev/null +++ b/java-vaadin/src/ch/asynk/helloworld/DataMappingLayout.java @@ -0,0 +1,170 @@ +package ch.asynk.helloworld; + +import com.vaadin.terminal.UserError; +import com.vaadin.data.Property; +import com.vaadin.data.Property.ValueChangeEvent; +import com.vaadin.data.util.ObjectProperty; +import com.vaadin.data.Validator; +import com.vaadin.data.validator.DoubleValidator; +import com.vaadin.ui.Alignment; +import com.vaadin.ui.AbstractComponent; +import com.vaadin.ui.VerticalLayout; +import com.vaadin.ui.FormLayout; +import com.vaadin.ui.Panel; +import com.vaadin.ui.Label; +import com.vaadin.ui.Button; +import com.vaadin.ui.Button.ClickEvent; +import com.vaadin.ui.TextField; + +public class DataMappingLayout extends VerticalLayout { + // + private static final long serialVersionUID = 1L; + // + private Context ctx = null; + + public DataMappingLayout(Context context) { + ctx = context; + // + final AbstractComponent pa = buildPanel(); + pa.setWidth(600,UNITS_PIXELS); + pa.setHeight(400,UNITS_PIXELS); + addComponent(pa); + setComponentAlignment(pa, Alignment.MIDDLE_CENTER); + // + } + // + private AbstractComponent buildPanel() { + Panel panel = new Panel("Data Mapping Layout"); + FormLayout layout = new FormLayout(); + panel.setContent(layout); + // + final TextField tf1 = new TextField("Property.ValueChangeListener"); + tf1.setImmediate(true); + layout.addComponent(tf1); + final Label lb1 = new Label(); + lb1.setCaption("The Value"); + layout.addComponent(lb1); + tf1.addListener( new Property.ValueChangeListener() { + private static final long serialVersionUID = 1L; + @Override + public void valueChange(ValueChangeEvent event) { + String value = (String) tf1.getValue(); + lb1.setValue(value); + } + }); + // + Double trouble = 66.6; + final ObjectProperty<Double> property = new ObjectProperty<Double>(trouble); + final TextField tf2 = new TextField("ObjectProperty + Validator", property); + tf2.setImmediate(true); + tf2.addValidator( new DoubleValidator("It should be a double") ); + //tf2.setValidationVisible(false); // nothing will happen + layout.addComponent(tf2); + final Label lb2 = new Label(property); + lb2.setCaption("The Value"); + layout.addComponent(lb2); + // + final TextField tf3 = new TextField("No spaces"); + layout.addComponent(tf3); + tf3.setComponentError(null); // (actually the default) + final Button b1 = new Button("Ok!"); + layout.addComponent(b1); + b1.addListener(new Button.ClickListener() { + private static final long serialVersionUID = 1L; + @Override + public void buttonClick(ClickEvent event) { + if (! ((String) tf3.getValue()).matches("^\\w*$")) { + tf3.setComponentError(new UserError("Must be letters and numbers")); + } else { + tf3.setComponentError(null); + } + } + }); + // + // final Validator intValidator = new Validator() { ... } + class MyIntValidator implements Validator { + private static final long serialVersionUID = 1L; + public boolean isValid(Object value) { + if (value == null || !(value instanceof String)) { + return false; + } + return ((String) value).matches("[1-9][0-9]{4}"); + } + public void validate(Object value) throws InvalidValueException { + if (!isValid(value)) { + if (value != null && value.toString().startsWith("0")) { + throw new InvalidValueException("Must not start with a zero."); + } else { + throw new InvalidValueException("Must be a number 10000-99999."); + } + } + } + }; + final TextField tf5 = new TextField("MyIntValidator"); + tf5.addValidator(new MyIntValidator()); + tf5.setImmediate(true); + layout.addComponent(tf5); + // + class IntegerObjectProperty implements Property { + private static final long serialVersionUID = 1L; + Integer data = 0; + boolean readOnly = false; + public Class<?> getType() { + return Integer.class; + } + public Object getValue() { + return data; + } + public boolean isReadOnly() { + return readOnly; + } + public void setReadOnly(boolean newStatus) { + readOnly = newStatus; + } + public void setValue(Object newValue) throws ReadOnlyException, ConversionException { + if (readOnly) + throw new ReadOnlyException(); + if (newValue instanceof Integer) + data = (Integer) newValue; + else if (newValue instanceof String) + try { + data = Integer.parseInt((String) newValue, 16); + } catch (NumberFormatException e) { + throw new ConversionException("Must be an integer (from property)"); + } + else + throw new ConversionException("Unknown entry type (from property)"); + } + @Override + public String toString() { + return Integer.toHexString(data)+" (hex)"; + } + }; + final IntegerObjectProperty intProperty = new IntegerObjectProperty(); + intProperty.setValue(666); + final TextField tf4 = new TextField("MyObjectProperty",intProperty); + tf4.setImmediate(true); + tf4.setErrorHandler(new ComponentErrorHandler() { + private static final long serialVersionUID = 1L; + @Override + public boolean handleComponentError(ComponentErrorEvent event) { + tf4.setComponentError(new UserError("Must be an integer (from handler)")); + return true; + } + }); + layout.addComponent(tf4); + // + Button nextButton = new Button("next layout"); + nextButton.setDescription("Go to next layout"); + layout.addComponent(nextButton ); + nextButton.addListener( new Button.ClickListener() { + private static final long serialVersionUID = 1L; + @Override + public void buttonClick(ClickEvent event) { + getApplication().getMainWindow().setContent( new LayoutLayout(ctx) ); + } + }); + // + return panel; + } +} |