GWT SuggestBox Popup与输入字段大小相同

Question

我尝试使用GWT创建一个SuggestBox,到目前为止一切正常.但我想让SuggestBox的Popup与Input Field具有相同的大小,但我还没有找到一种方法.

如果你能给我一个提示,我会很高兴的.

问候凯文

Answer 1

创建自定义类扩展DefaultSuggestonDisplay和覆盖showSuggestions方法

import java.util.Collection;

import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.user.client.ui.SuggestBox;
import com.google.gwt.user.client.ui.SuggestBox.DefaultSuggestionDisplay;
import com.google.gwt.user.client.ui.SuggestBox.SuggestionCallback;
import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;

public class CustomSuggestionDisplay extends DefaultSuggestionDisplay
{
    @Override
    protected void showSuggestions( SuggestBox suggestBox, Collection< ? extends Suggestion> suggestions, boolean isDisplayStringHTML, boolean isAutoSelectEnabled, SuggestionCallback callback )
    {
        super.showSuggestions( suggestBox, suggestions, isDisplayStringHTML, isAutoSelectEnabled, callback );
        getPopupPanel().setWidth( ( suggestBox.getElement().getAbsoluteRight() - suggestBox.getAbsoluteLeft() ) + Unit.PX.getType() );
    }
}

使用以下建议框consturctor

SuggestBox suggestBox = new SuggestBox( new MultiWordSuggestOracle(), new TextBox(), new CustomSuggestionDisplay() );