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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client.ui;
import java.util.ArrayList;
import java.util.Iterator;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.vaadin.terminal.gwt.client.BrowserInfo;
import com.vaadin.terminal.gwt.client.UIDL;
import com.vaadin.terminal.gwt.client.Util;
public class VNativeSelect extends VOptionGroupBase implements Field {
public static final String CLASSNAME = "v-select";
protected TooltipListBox select;
private boolean firstValueIsTemporaryNullItem = false;
public VNativeSelect() {
super(new TooltipListBox(false), CLASSNAME);
select = (TooltipListBox) optionsContainer;
select.setSelect(this);
select.setVisibleItemCount(1);
select.addChangeHandler(this);
select.setStyleName(CLASSNAME + "-select");
}
@Override
protected void buildOptions(UIDL uidl) {
select.setClient(client);
select.setEnabled(!isDisabled() && !isReadonly());
select.clear();
firstValueIsTemporaryNullItem = false;
if (isNullSelectionAllowed() && !isNullSelectionItemAvailable()) {
// can't unselect last item in singleselect mode
select.addItem("", (String) null);
}
boolean selected = false;
for (final Iterator<?> i = uidl.getChildIterator(); i.hasNext();) {
final UIDL optionUidl = (UIDL) i.next();
select.addItem(optionUidl.getStringAttribute("caption"),
optionUidl.getStringAttribute("key"));
if (optionUidl.hasAttribute("selected")) {
select.setItemSelected(select.getItemCount() - 1, true);
selected = true;
}
}
if (!selected && !isNullSelectionAllowed()) {
// null-select not allowed, but value not selected yet; add null and
// remove when something is selected
select.insertItem("", (String) null, 0);
select.setItemSelected(0, true);
firstValueIsTemporaryNullItem = true;
}
if (BrowserInfo.get().isIE6()) {
// lazy size change - IE6 uses naive dropdown that does not have a
// proper size yet
Util.notifyParentOfSizeChange(this, true);
}
}
@Override
protected String[] getSelectedItems() {
final ArrayList<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) {
if (select.isMultipleSelect()) {
client.updateVariable(id, "selected", getSelectedItems(),
isImmediate());
} else {
client.updateVariable(id, "selected", new String[] { ""
+ getSelectedItem() }, isImmediate());
}
if (firstValueIsTemporaryNullItem) {
// remove temporary empty item
select.removeItem(0);
firstValueIsTemporaryNullItem = false;
}
}
@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
protected void setTabIndex(int tabIndex) {
((TooltipListBox) optionsContainer).setTabIndex(tabIndex);
}
public void focus() {
select.setFocus(true);
}
}
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