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- /*
- * Copyright 2000-2018 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
- package com.vaadin.v7.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.HasEnabled;
- import com.google.gwt.user.client.ui.Panel;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.client.ApplicationConnection;
- import com.vaadin.client.Focusable;
- import com.vaadin.client.UIDL;
- import com.vaadin.client.ui.Field;
- import com.vaadin.client.ui.VNativeButton;
-
- public abstract class VOptionGroupBase extends Composite implements Field,
- ClickHandler, ChangeHandler, KeyPressHandler, Focusable, HasEnabled {
-
- public static final String CLASSNAME_OPTION = "v-select-option";
-
- /** For internal use only. May be removed or replaced in the future. */
- public ApplicationConnection client;
-
- /** For internal use only. May be removed or replaced in the future. */
- public String paintableId;
-
- /** For internal use only. May be removed or replaced in the future. */
- public Set<String> selectedKeys;
-
- /** For internal use only. May be removed or replaced in the future. */
- public boolean immediate;
-
- /** For internal use only. May be removed or replaced in the future. */
- public boolean multiselect;
-
- private boolean enabled;
-
- private boolean readonly;
-
- /** For internal use only. May be removed or replaced in the future. */
- public int cols = 0;
-
- /** For internal use only. May be removed or replaced in the future. */
- public int rows = 0;
-
- /** For internal use only. May be removed or replaced in the future. */
- public boolean nullSelectionAllowed = true;
-
- /** For internal use only. May be removed or replaced in the future. */
- public boolean nullSelectionItemAvailable = false;
-
- /**
- * Widget holding the different options (e.g. ListBox or Panel for radio
- * buttons) (optional, fallbacks to container Panel)
- * <p>
- * For internal use only. May be removed or replaced in the future.
- */
- public Widget optionsContainer;
-
- /**
- * Panel containing the component.
- * <p>
- * For internal use only. May be removed or replaced in the future.
- */
- public final Panel container;
-
- /** For internal use only. May be removed or replaced in the future. */
- public VTextField newItemField;
-
- /** For internal use only. May be removed or replaced in the future. */
- public 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;
- }
-
- @Override
- public boolean isEnabled() {
- return enabled;
- }
-
- public boolean isReadonly() {
- return readonly;
- }
-
- protected boolean isNullSelectionAllowed() {
- return nullSelectionAllowed;
- }
-
- protected boolean isNullSelectionItemAvailable() {
- return nullSelectionItemAvailable;
- }
-
- /**
- * For internal use only. May be removed or replaced in the future.
- *
- * @return "cols" specified in uidl, 0 if not specified
- */
- public int getColumns() {
- return cols;
- }
-
- /**
- * For internal use only. May be removed or replaced in the future.
- *
- * @return "rows" specified in uidl, 0 if not specified
- */
- public int getRows() {
- return rows;
- }
-
- public abstract void setTabIndex(int tabIndex);
-
- @Override
- public void onClick(ClickEvent event) {
- if (event.getSource() == newItemButton
- && !newItemField.getText().equals("")) {
- client.updateVariable(paintableId, "newitem",
- newItemField.getText(), true);
- newItemField.setText("");
- }
- }
-
- @Override
- public void onChange(ChangeEvent event) {
- if (multiselect) {
- client.updateVariable(paintableId, "selected", getSelectedItems(),
- immediate);
- } else {
- client.updateVariable(paintableId, "selected",
- new String[] { "" + getSelectedItem() }, immediate);
- }
- }
-
- @Override
- public void onKeyPress(KeyPressEvent event) {
- if (event.getSource() == newItemField
- && event.getCharCode() == KeyCodes.KEY_ENTER) {
- newItemButton.click();
- }
- }
-
- public void setReadonly(boolean readonly) {
- if (this.readonly != readonly) {
- this.readonly = readonly;
- updateEnabledState();
- }
- }
-
- @Override
- public void setEnabled(boolean enabled) {
- if (this.enabled != enabled) {
- this.enabled = enabled;
- updateEnabledState();
- }
- }
-
- /** For internal use only. May be removed or replaced in the future. */
- public abstract void buildOptions(UIDL uidl);
-
- protected abstract String[] getSelectedItems();
-
- protected abstract void updateEnabledState();
-
- protected String getSelectedItem() {
- final String[] sel = getSelectedItems();
- if (sel.length > 0) {
- return sel[0];
- } else {
- return null;
- }
- }
-
- }
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