Variable enhancements
* typing map for changevariable to <String,Object>
* added variabletypes Object[] and Map<String,Object> where Objects can be Strings,Integers, Longs, Floats, Doubles, Booleans and Paintables (reference on client side translates to corresponding server side component by terminal)
* Note, multilevel datastructures still not supported (Array or Map inside another), needs #3765
fixes #3756, #3757
svn changeset:10023/svn branch:6.2
14 anni fa Variable enhancements
* typing map for changevariable to <String,Object>
* added variabletypes Object[] and Map<String,Object> where Objects can be Strings,Integers, Longs, Floats, Doubles, Booleans and Paintables (reference on client side translates to corresponding server side component by terminal)
* Note, multilevel datastructures still not supported (Array or Map inside another), needs #3765
fixes #3756, #3757
svn changeset:10023/svn branch:6.2
14 anni fa |
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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.ArrayList;
- import java.util.HashSet;
- import java.util.List;
- import java.util.Set;
-
- import com.google.gwt.event.dom.client.ChangeEvent;
- import com.google.gwt.user.client.ui.ListBox;
- import com.vaadin.client.UIDL;
- import com.vaadin.shared.util.SharedUtil;
-
- public class VListSelect extends VOptionGroupBase {
-
- public static final String CLASSNAME = "v-select";
-
- private static final int VISIBLE_COUNT = 10;
-
- protected ListBox select;
-
- private int lastSelectedIndex = -1;
-
- public VListSelect() {
- super(new ListBox(true), CLASSNAME);
- select = getOptionsContainer();
- select.addChangeHandler(this);
- select.addClickHandler(this);
- select.setVisibleItemCount(VISIBLE_COUNT);
- setStyleName(CLASSNAME);
-
- updateEnabledState();
- }
-
- @Override
- public void setStyleName(String style) {
- super.setStyleName(style);
- updateStyleNames();
- }
-
- @Override
- public void setStylePrimaryName(String style) {
- super.setStylePrimaryName(style);
- updateStyleNames();
- }
-
- protected void updateStyleNames() {
- container.setStyleName(getStylePrimaryName());
- select.setStyleName(getStylePrimaryName() + "-select");
- }
-
- protected ListBox getOptionsContainer() {
- return (ListBox) optionsContainer;
- }
-
- @Override
- public void buildOptions(UIDL uidl) {
- select.setMultipleSelect(isMultiselect());
-
- Set<String> previousKeys = new HashSet<String>();
- for (int i = 0; i < select.getItemCount(); i++) {
- previousKeys.add(select.getValue(i));
- }
-
- int nextIndex = 0;
- if (!isMultiselect() && isNullSelectionAllowed()
- && !isNullSelectionItemAvailable()) {
- // can't unselect last item in singleselect mode
- updateOrCreateItem("", "null", nextIndex++, previousKeys);
- select.addItem("", (String) null);
-
- // Null select item can't be selected programmatically, but will
- // remain selected if it was selected by the user. There's no
- // need to deselect when something else is selected since it's only
- // used in single select mode.
- }
- for (final Object child : uidl) {
- final UIDL optionUidl = (UIDL) child;
- updateOrCreateItem(optionUidl.getStringAttribute("caption"),
- optionUidl.getStringAttribute("key"), nextIndex,
- previousKeys);
- if (optionUidl.hasAttribute("selected")) {
- select.setItemSelected(nextIndex, true);
- lastSelectedIndex = nextIndex;
- } else {
- select.setItemSelected(nextIndex, false);
- }
- nextIndex++;
- }
-
- // Remove any trailing items not in the UIDL
- while (select.getItemCount() > nextIndex) {
- select.removeItem(nextIndex);
- }
-
- if (getRows() > 0) {
- select.setVisibleItemCount(getRows());
- }
- }
-
- private void updateOrCreateItem(String caption, String key, int index,
- Set<String> previousKeys) {
- if (previousKeys.remove(key)) {
- while (select.getItemCount() >= index) {
- String keyAtIndex = select.getValue(index);
- if (SharedUtil.equals(key, keyAtIndex)) {
- select.setItemText(index, caption);
- return;
- } else {
- // Assume the item we're looking at has simply been removed
- // and that the next item will match our key
- select.removeItem(index);
- previousKeys.remove(keyAtIndex);
- }
- }
- }
-
- // We end up here for new items or if we removed all following items
- // while looking for a match
- select.insertItem(caption, key, index);
- }
-
- @Override
- protected String[] getSelectedItems() {
- final List<String> selectedItemKeys = new ArrayList<String>();
- for (int i = 0; i < select.getItemCount(); i++) {
- if (select.isItemSelected(i)) {
- selectedItemKeys.add(select.getValue(i));
- }
- }
- return selectedItemKeys.toArray(new String[selectedItemKeys.size()]);
- }
-
- @Override
- public void onChange(ChangeEvent event) {
- final int si = select.getSelectedIndex();
- if (si == -1 && !isNullSelectionAllowed()) {
- select.setSelectedIndex(lastSelectedIndex);
- } else {
- lastSelectedIndex = si;
- if (isMultiselect()) {
- client.updateVariable(paintableId, "selected",
- getSelectedItems(), isImmediate());
- } else {
- client.updateVariable(paintableId, "selected",
- new String[] { "" + getSelectedItem() }, isImmediate());
- }
- }
- }
-
- @Override
- public void setHeight(String height) {
- select.setHeight(height);
- super.setHeight(height);
- }
-
- @Override
- public void setWidth(String width) {
- select.setWidth(width);
- super.setWidth(width);
- }
-
- @Override
- public void setTabIndex(int tabIndex) {
- getOptionsContainer().setTabIndex(tabIndex);
- }
-
- @Override
- protected void updateEnabledState() {
- select.setEnabled(isEnabled() && !isReadonly());
- }
-
- @Override
- public void focus() {
- select.setFocus(true);
- }
- }
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