1
我有一个文本框用于在我的应用程序中搜索产品。当用户在文本框中输入内容时,应该显示建议,以便用户可以搜索任何特定的产品类别。GWT意见箱覆盖默认行为
例如,如果产品被归类为男装,女装,童装,夏季,冬季和用户输入的“磨脚”,建议列表应该显示如下:
foot wear in Men
foot wear in Women
foot wear in Kids
foot wear in Summer
foot wear in Winter
上KeyUp事件,我清除当前的建议,并通过附加每个类别名称与文本中输入的用户来填充新的建议列表。它可以正常工作,但用户不会输入与类别名称相匹配的任何内容。也就是说,如果用户输入“赢”,建议只显示
Wi in Winter
但我预计的建议是
Win in Men
Win in Women
Win in Kids
Win in Summer
Win in Winter
谁能告诉什么可能是错误的。
谢谢。
更新 - 附代码
其实我创建了一个自定义的widget。下面是我的Java和XML模板
public class MySearchBox extends Composite implements IsWidget, HasKeyDownHandlers, HasSelectionHandlers<Suggestion>, KeyUpHandler, ClickHandler, BlurHandler
{
private static MySearchBoxUiBinder uiBinder = GWT.create(MySearchBoxUiBinder.class);
interface MySearchBoxUiBinder extends UiBinder<Widget, MySearchBox>
{
}
private static final List<String> PDT_CHANNELS = Arrays.asList("Men", "Women", "Kids", "Summer", "Winter");
@UiField
SuggestBox mySuggestionBox;
public MySearchBox()
{
initWidget(uiBinder.createAndBindUi(this));
initialize();
}
private void initialize()
{
mySuggestionBox.getTextBox().addKeyUpHandler(this);
mySuggestionBox.getTextBox().addClickHandler(this);
mySuggestionBox.getTextBox().addBlurHandler(this);
}
@Override
public void onKeyUp(final KeyUpEvent event)
{
if(event.getNativeKeyCode() != KeyCodes.KEY_ENTER)
{
populateOracle(mySuggestionBox.getText().trim());
}
}
private void populateOracle(final String inputText)
{
String searchText = "";
if(inputText != null)
{
searchText = inputText.trim();
}
if((searchText == null || searchText.length() < 1))
{
clearOracle();
mySuggestionBox.showSuggestionList();
return;
}
final List<String> oracleSuggestions = new ArrayList<String>();
for(String scope : PDT_CHANNELS)
{
oracleSuggestions.add(searchText + " in " + scope);
}
populateOracle(oracleSuggestions);
}
private void clearOracle()
{
final MultiWordSuggestOracle oracle = (MultiWordSuggestOracle)mySuggestionBox.getSuggestOracle();
final DefaultSuggestionDisplay suggestionDisplay = (DefaultSuggestionDisplay)mySuggestionBox
.getSuggestionDisplay();
if(suggestionDisplay.isSuggestionListShowing())
{
suggestionDisplay.hideSuggestions();
}
oracle.clear();
}
private void populateOracle(final List<String> data)
{
final MultiWordSuggestOracle oracle = (MultiWordSuggestOracle)mySuggestionBox.getSuggestOracle();
oracle.clear();
oracle.addAll(data);
final DefaultSuggestionDisplay suggestionDisplay = (DefaultSuggestionDisplay)mySuggestionBox
.getSuggestionDisplay();
if(!suggestionDisplay.isSuggestionListShowing())
{
mySuggestionBox.showSuggestionList();
}
}
@Override
public HandlerRegistration addSelectionHandler(final SelectionHandler<Suggestion> handler)
{
return mySuggestionBox.addHandler(handler, SelectionEvent.getType());
}
@Override
public HandlerRegistration addKeyDownHandler(final KeyDownHandler handler)
{
return mySuggestionBox.addHandler(handler, KeyDownEvent.getType());
}
}
XML模板:
</ui:style>
<g:SuggestBox ui:field="mySuggestionBox"></g:SuggestBox>
</ui:UiBinder>
您应该发布您迄今为止使用过的代码。这将有助于弄清楚什么是错的。 – enrybo 2013-03-15 03:34:23
发布您的代码。 – 2013-03-15 03:55:09
你必须做productNameString.contains(searchString)。使用productNameString.startsWith(searchString) – Adarsha 2013-03-15 07:14:04