smartGWT TileGrid :: onKeyPress - 如何覆盖Enter键,但保持其他键的默认处理

Question

我正在smartGWT项目中的tile网格上加载文件图标.按Enter键时,我想打开所选文件进行显示.

当我覆盖onKeyPress处理程序时,它确实有效,但使用左/右/上/下箭头键的tile网格导航行为将丢失.

我的问题是..,如何保留默认处理行为,同时仍然覆盖Enter键.

  tileGrid.addKeyPressHandler (new KeyPressHandler() {
    @Override
    public void onKeyPress(KeyPressEvent event) {
      if (EventHandler.getKey().equals("Enter")) {
       //do something special here
      }
      else {
        **//TODO: do the default processing..**.
      }
    }
  });

编辑:

@Ras,这是模拟问题的代码.

package com.rv.gwtsample.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.smartgwt.client.data.Record;
import com.smartgwt.client.widgets.events.KeyPressEvent;
import com.smartgwt.client.widgets.events.KeyPressHandler;
import com.smartgwt.client.widgets.tile.TileGrid;
import com.smartgwt.client.widgets.tile.TileRecord;

/**
 * @author rvnath
 *
 */
public class MyTileGrid implements EntryPoint {

    /* (non-Javadoc)
     * @see com.google.gwt.core.client.EntryPoint#onModuleLoad()
     */
    @Override
    public void onModuleLoad() {
        // TODO Auto-generated method stub
        TileGrid grid = new TileGrid();
        grid.setLeft(50);
        grid.setTop(50);
        grid.setWidth("300");
        grid.setHeight("200");
            DetailViewerField field = new DetailViewerField("Name");
        grid.setFields(field);
        grid.addKeyPressHandler(new KeyPressHandler() {
            @Override
            public void onKeyPress(KeyPressEvent event) {
                if (event.getKeyName().equals("Enter"))
                    GWT.log("Enter pressed");
            }
        });

    Record[] rec = new TileRecord[32];
    for (int i=0; i<32; ++i) {
        rec[i] = new TileRecord();
    }

    grid.setData(rec);
    grid.draw();
}

}

如果我禁用onKeyPress处理程序,箭头键可以在tile网格的元素之间导航.如果我启用,则整个切片网格面板会滚动,而不是选择更改.

Answer 1

而不是使用KeyPressHandler,尝试KeyDownHandler,它的工作原理.

        tileGrid.addKeyDownHandler(new KeyDownHandler() {
            @Override
            public void onKeyDown(KeyDownEvent event) {
                if (EventHandler.getKey().equalsIgnoreCase("Enter")){
                    openModal(tileGrid.getSelectedRecord());
                }
            }
        });

测试了最新的3.0 smartgwt版本.