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- /*
- @ITMillApache2LicenseForJavaFiles@
- */
-
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.Set;
-
- import com.google.gwt.event.dom.client.ChangeEvent;
- import com.google.gwt.event.dom.client.ChangeHandler;
- import com.google.gwt.event.dom.client.ClickEvent;
- import com.google.gwt.event.dom.client.ClickHandler;
- import com.google.gwt.event.dom.client.KeyCodes;
- import com.google.gwt.event.dom.client.KeyPressEvent;
- import com.google.gwt.event.dom.client.KeyPressHandler;
- import com.google.gwt.user.client.ui.Composite;
- import com.google.gwt.user.client.ui.FlowPanel;
- import com.google.gwt.user.client.ui.Panel;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.terminal.gwt.client.ApplicationConnection;
- import com.vaadin.terminal.gwt.client.Focusable;
- import com.vaadin.terminal.gwt.client.Paintable;
- import com.vaadin.terminal.gwt.client.UIDL;
-
- abstract class VOptionGroupBase extends Composite implements Paintable, Field,
- ClickHandler, ChangeHandler, KeyPressHandler, Focusable {
-
- public static final String CLASSNAME_OPTION = "v-select-option";
-
- protected ApplicationConnection client;
-
- protected String id;
-
- protected Set<String> selectedKeys;
-
- private boolean immediate;
-
- private boolean multiselect;
-
- private boolean disabled;
-
- private boolean readonly;
-
- private int cols = 0;
-
- private int rows = 0;
-
- private boolean nullSelectionAllowed = true;
-
- private boolean nullSelectionItemAvailable = false;
-
- /**
- * Widget holding the different options (e.g. ListBox or Panel for radio
- * buttons) (optional, fallbacks to container Panel)
- */
- protected Widget optionsContainer;
-
- /**
- * Panel containing the component
- */
- private final Panel container;
-
- private VTextField newItemField;
-
- private VNativeButton newItemButton;
-
- public VOptionGroupBase(String classname) {
- container = new FlowPanel();
- initWidget(container);
- optionsContainer = container;
- container.setStyleName(classname);
- immediate = false;
- multiselect = false;
- }
-
- /*
- * Call this if you wish to specify your own container for the option
- * elements (e.g. SELECT)
- */
- public VOptionGroupBase(Widget w, String classname) {
- this(classname);
- optionsContainer = w;
- container.add(optionsContainer);
- }
-
- protected boolean isImmediate() {
- return immediate;
- }
-
- protected boolean isMultiselect() {
- return multiselect;
- }
-
- protected boolean isDisabled() {
- return disabled;
- }
-
- protected boolean isReadonly() {
- return readonly;
- }
-
- protected boolean isNullSelectionAllowed() {
- return nullSelectionAllowed;
- }
-
- protected boolean isNullSelectionItemAvailable() {
- return nullSelectionItemAvailable;
- }
-
- /**
- * @return "cols" specified in uidl, 0 if not specified
- */
- protected int getColumns() {
- return cols;
- }
-
- /**
- * @return "rows" specified in uidl, 0 if not specified
- */
-
- protected int getRows() {
- return rows;
- }
-
- public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
- this.client = client;
- id = uidl.getId();
-
- if (client.updateComponent(this, uidl, true)) {
- return;
- }
-
- selectedKeys = uidl.getStringArrayVariableAsSet("selected");
-
- readonly = uidl.getBooleanAttribute("readonly");
- disabled = uidl.getBooleanAttribute("disabled");
- multiselect = "multi".equals(uidl.getStringAttribute("selectmode"));
- immediate = uidl.getBooleanAttribute("immediate");
- nullSelectionAllowed = uidl.getBooleanAttribute("nullselect");
- nullSelectionItemAvailable = uidl.getBooleanAttribute("nullselectitem");
-
- if (uidl.hasAttribute("cols")) {
- cols = uidl.getIntAttribute("cols");
- }
- if (uidl.hasAttribute("rows")) {
- rows = uidl.getIntAttribute("rows");
- }
-
- final UIDL ops = uidl.getChildUIDL(0);
-
- if (getColumns() > 0) {
- container.setWidth(getColumns() + "em");
- if (container != optionsContainer) {
- optionsContainer.setWidth("100%");
- }
- }
-
- buildOptions(ops);
-
- if (uidl.getBooleanAttribute("allownewitem")) {
- if (newItemField == null) {
- newItemButton = new VNativeButton();
- newItemButton.setText("+");
- newItemButton.addClickHandler(this);
- newItemField = new VTextField();
- newItemField.addKeyPressHandler(this);
- }
- newItemField.setEnabled(!disabled && !readonly);
- newItemButton.setEnabled(!disabled && !readonly);
-
- if (newItemField == null || newItemField.getParent() != container) {
- container.add(newItemField);
- container.add(newItemButton);
- final int w = container.getOffsetWidth()
- - newItemButton.getOffsetWidth();
- newItemField.setWidth(Math.max(w, 0) + "px");
- }
- } else if (newItemField != null) {
- container.remove(newItemField);
- container.remove(newItemButton);
- }
-
- setTabIndex(uidl.hasAttribute("tabindex") ? uidl
- .getIntAttribute("tabindex") : 0);
-
- }
-
- abstract protected void setTabIndex(int tabIndex);
-
- public void onClick(ClickEvent event) {
- if (event.getSource() == newItemButton
- && !newItemField.getText().equals("")) {
- client.updateVariable(id, "newitem", newItemField.getText(), true);
- newItemField.setText("");
- }
- }
-
- public void onChange(ChangeEvent event) {
- if (multiselect) {
- client.updateVariable(id, "selected", getSelectedItems(), immediate);
- } else {
- client.updateVariable(id, "selected", new String[] { ""
- + getSelectedItem() }, immediate);
- }
- }
-
- public void onKeyPress(KeyPressEvent event) {
- if (event.getSource() == newItemField
- && event.getCharCode() == KeyCodes.KEY_ENTER) {
- newItemButton.click();
- }
- }
-
- protected abstract void buildOptions(UIDL uidl);
-
- protected abstract String[] getSelectedItems();
-
- protected String getSelectedItem() {
- final String[] sel = getSelectedItems();
- if (sel.length > 0) {
- return sel[0];
- } else {
- return null;
- }
- }
-
- }
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