package org.jboss.ballroom.client.widgets.forms;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestOracle;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
/**
* @author Heiko Braun
* @date 2/27/12
*/
public class SuggestBoxItem extends FormItem<String> {
protected TextBox textBox;
private InputElementWrapper wrapper;
private SuggestBox suggestBox;
private SuggestOracle oracle;
private boolean willBeFiltered = false;
public SuggestBoxItem(String name, String title) {
super(name, title);
textBox = new TextBox();
textBox.setName(name);
textBox.setTitle(title);
textBox.setTabIndex(0);
textBox.addValueChangeHandler(new ValueChangeHandler<String>() {
@Override
public void onValueChange(ValueChangeEvent<String> event) {
setModified(true);
setUndefined(event.getValue().equals(""));
}
});
}
public SuggestBoxItem(String name, String title, boolean isRequired) {
super(name, title);
setRequired(isRequired);
textBox = new TextBox();
textBox.setName(name);
textBox.setTitle(title);
textBox.setTabIndex(0);
textBox.addValueChangeHandler(new ValueChangeHandler<String>() {
@Override
public void onValueChange(ValueChangeEvent<String> event) {
setModified(true);
setUndefined(event.getValue().equals(""));
}
});
}
@Override
public void setFiltered(boolean filtered) {
super.setFiltered(filtered);
super.toggleAccessConstraint(textBox, filtered);
textBox.setEnabled(!filtered);
willBeFiltered = filtered;
}
@Override
public Element getInputElement() {
return textBox.getElement();
}
public void setOracle(SuggestOracle oracle) {
this.oracle = oracle;
}
@Override
public Widget asWidget() {
if(null==oracle)
throw new RuntimeException("oracle required!");
this.suggestBox = new SuggestBox(oracle, textBox);
suggestBox.addValueChangeHandler(new ValueChangeHandler<String>() {
@Override
public void onValueChange(ValueChangeEvent<String> event) {
setModified(true);
setUndefined(event.getValue().equals(""));
}
});
suggestBox.addSelectionHandler(new SelectionHandler<SuggestOracle.Suggestion>() {
@Override
public void onSelection(SelectionEvent<SuggestOracle.Suggestion> suggestionSelectionEvent) {
setModified(true);
setUndefined(suggestBox.getValue().equals(""));
}
});
wrapper = new InputElementWrapper(suggestBox, this);
wrapper.setConstraintsApply(willBeFiltered);
return wrapper;
}
@Override
public String getValue() {
return textBox.getValue();
}
@Override
public void resetMetaData() {
super.resetMetaData();
textBox.setValue(null);
}
@Override
public void setExpressionValue(String expr) {
this.expressionValue = expr;
if(expressionValue!=null)
{
toggleExpressionInput(textBox, true);
textBox.setValue(expressionValue);
}
}
@Override
public void setValue(String value) {
toggleExpressionInput(textBox, false);
textBox.setValue(value.trim());
}
@Override
public void setEnabled(boolean b) {
textBox.setEnabled(b);
}
@Override
public void setErroneous(boolean b) {
super.setErroneous(b);
wrapper.setErroneous(b);
}
@Override
public String getErrMessage() {
return super.getErrMessage()+": no whitespace, no special chars";
}
@Override
public boolean validate(String value) {
if(expressionValue!=null || isExpressionScheme(textBox.getValue()))
{
return true;
}
else if(isRequired() && value.equals(""))
{
return false;
}
else
{
String updated = value.replace(" ", ""); // contains white space?
return updated.equals(value);
}
}
@Override
public void clearValue() {
textBox.setText("");
}
@Override
protected void toggleExpressionInput(Widget target, boolean flag) {
wrapper.setExpression(flag);
}
}