GXT에서 어떤 사건이 발생했는지 어떻게 알 수 있습니까?

Question

GXT에서 어떤 이벤트가 발생했는지에 대한 문서를 찾을 수없는 것 같습니다.

API 문서에는 실행할 수있는 모든 이벤트 목록이 있습니다 (Events). 그리고 당신이 붙잡은 사건을 다루는 방법을 설명합니다. 하지만 반대편에 관심이 있습니다. 어떤 행동을 취하면 해고됩니다.

다양한 구성 요소에 대한 일부 수신기를 설정하거나 특정 이벤트 코드와 함께 addListener을 사용하여 개별 이벤트를 잡을 수 있습니다. 그것은 드문 드문, 나는 내가 잡으려 고 할지도 모르는 것을 추측하기 위해 시행 착오를 사용하고있는 것처럼 보입니다.

발사중인 모든 이벤트를 기록하는 방법이 있습니까? 아니면 모든 것을 잡아서 디버거에서 볼 수 있습니까?

또는 정보가 누락 된 일부 설명서가 있습니까? "위젯을 클릭하면 ButtonEvent이 실행되고, 마우스 오버시 Events.x이 실행되면 클릭시 Events.y이 발동됩니다."

Answer 1

나는 무력을 사용하여 종료 : 이벤트 유형 및 이름의지도 만든 후 구성 요소가받을 수 있다는 이벤트의 각 유형에 대한 리스너를 연결합니다. 그런 다음 Listener 내부에 중단 점을 설정하고 아무 일이 일어 났을 때 어떤 이벤트가 수신되었는지 확인할 수있었습니다.

코드가 삭제되지 않았다면 익명의 Listener 클래스 등을 사용하지 않고 유틸리티 클래스로 정리했을 것입니다.

final Map<EventType, String> eventTypeNames = new HashMap<EventType, String>(); 
    eventTypeNames.put(Events.BeforeExpand, "BeforeExpand"); 
    eventTypeNames.put(Events.Expand, "Expand"); 
    ... 
    eventTypeNames.put(Events.BeforeStateSave, "BeforeStateSave"); 
    eventTypeNames.put(Events.StateSave, "StateSave"); 

    for (EventType eventType : Arrays.asList(
      Events.BeforeExpand, 
      Events.Expand, 
      ... 
      Events.BeforeStateSave, 
      Events.StateSave 
    )) { 
     this.addListener(eventType, new Listener<BaseEvent>() { 
      public void handleEvent(final BaseEvent be) { 
       String type = eventTypeNames.get(be.getType()); 
       String ev = be.toString(); 
      } 
     }); 
    } 

Answer 2

다양한 위젯에 대한 API 문서는 실행될 이벤트와 실행시기를 설명합니다. 예를 들어 사용자가 TabPanel에있는 새로운 TabItem을 선택할 때마다 조치를 취하고 싶다고합시다.

TabPanel의 API 설명서 (http://extjs.com/deploy/gxtdocs/com/extjs/gxt/ui/client/widget/TabPanel.html에 있음)는 몇 가지 이벤트를 보여줍니다. 우리는 Select에 관심이 :

가 선택 : TabPanelEvent (컨테이너 항목) 인 아이템 후

화재가 선택됩니다.

• 컨테이너 :이
• 항목 : 그래서

을 선택된 항목, 이벤트 캡처 (당신이 이해가 나타납니다,하지만 완전성 '을 위해 포함)을 프로세스는 Events.Select 이벤트를 위해 특별히보고는 TabPanel에 리스너를 추가하는 것입니다

tp.addListener(Events.Select, new Listener<TabPanelEvent>(){ 
    public void handleEvent(TabPanelEvent be) 
    { 
    MessageBox.alert("Test", be.item.getText(), null); 
    } 
}); 

많은 이벤트에는 doit이라는 속성이 있으며이 이벤트를 취소하려면 false로 설정할 수 있습니다.

전체 코드 목록 :

package edu.fresno.client; 

import com.extjs.gxt.ui.client.Events; 
import com.extjs.gxt.ui.client.event.Listener; 
import com.extjs.gxt.ui.client.event.TabPanelEvent; 
import com.extjs.gxt.ui.client.widget.ContentPanel; 
import com.extjs.gxt.ui.client.widget.MessageBox; 
import com.extjs.gxt.ui.client.widget.TabItem; 
import com.extjs.gxt.ui.client.widget.TabPanel; 
import com.extjs.gxt.ui.client.widget.layout.FitLayout; 
import com.google.gwt.core.client.EntryPoint; 
import com.google.gwt.user.client.ui.RootPanel; 

public class GWTSandbox implements EntryPoint { 
    public void onModuleLoad() { 

     TabPanel tp = new TabPanel(); 

     TabItem ti1 = new TabItem("TabItem1"); 
     TabItem ti2 = new TabItem("TabItem2"); 

     tp.add(ti1); 
     tp.add(ti2); 

     tp.addListener(Events.Select, new Listener<TabPanelEvent>(){ 
      public void handleEvent(TabPanelEvent be) 
      { 
       MessageBox.alert("Test", be.item.getText(), null); 
      } 
     }); 


     ContentPanel panel = new ContentPanel(); 
     panel.setLayout(new FitLayout()); 
     panel.add(tp); 
     RootPanel.get().add(panel); 

    } 
} 

Answer 3

당신은 생성자에 대한 다음 코드를 추가 할 수 있습니다

ContentPanel panel =new ContentPanel(){ 
     public boolean fireEvent(EventType type) { 
      System.out.println(type.getEventCode()); 
      return super.fireEvent(type); 
     } 
     public boolean fireEvent(EventType eventType, BaseEvent be) { 
      System.out.println(eventType.getEventCode()); 
      return super.fireEvent(eventType, be); 
     } 
     public boolean fireEvent(EventType type, ComponentEvent ce) { 
      System.out.println(type.getEventCode()); 
      return super.fireEvent(type, ce); 
     } 
    }; 

는 다음이 구성 요소가받을 수있는 이벤트를 인쇄합니다.

Answer 4

어쩌면 누군가 유용 할 것입니다. 필자는 어떤 종류의 이벤트가 발생했는지보기위한 유틸리티 클래스를 만들었습니다. 아이디어는 수용된 대답에서 제안되었습니다.

import java.util.HashMap; 
import java.util.Map; 

import com.extjs.gxt.ui.client.event.BaseEvent; 
import com.extjs.gxt.ui.client.event.EventType; 
import com.extjs.gxt.ui.client.event.Events; 
import com.extjs.gxt.ui.client.event.Listener; 
import com.extjs.gxt.ui.client.widget.Component; 

/** 
* Class for debugging purposes. Sometimes it is hard to tell what type of event 
* is invoked and when. During debug process you can just do: 
* 
* EventUtils.attachDebugListeners(c); 
* EventUtils.attachDebugListeners(c, "NAME"); 
* 
* You'll then get information about events as they are invoked. 
* 
* List of events copied from {@link Events} class. 
* 
*/ 
public class EventUtils { 

    public static void attachDebugListeners(final Component c) { 
     attachDebugListeners(c, null); 
    } 

    public static void attachDebugListeners(final Component c, final String msg) { 
     for (final EventType type : eventTypeNames.keySet()) { 
      c.addListener(type, new Listener<BaseEvent>() { 
       @Override 
       public void handleEvent(BaseEvent be) { 
        String typeName = eventTypeNames.get(type); 
        if (msg != null) 
         System.out.print(msg + " -> "); 
        System.out.println(typeName); 
       } 
      }); 
     } 
    } 

    final static Map<EventType, String> eventTypeNames = new HashMap<EventType, String>(); 
    static { 
     eventTypeNames.put(Events.Activate, "Events.Activate"); 
     eventTypeNames.put(Events.Add, "Events.Add"); 
     eventTypeNames.put(Events.Adopt, "Events.Adopt"); 
     eventTypeNames.put(Events.AfterEdit, "Events.AfterEdit"); 
     eventTypeNames.put(Events.AfterLayout, "Events.AfterLayout"); 
     eventTypeNames.put(Events.ArrowClick, "Events.ArrowClick"); 
     eventTypeNames.put(Events.Attach, "Events.Attach"); 
     eventTypeNames.put(Events.AutoHide, "Events.AutoHide"); 
     eventTypeNames.put(Events.BeforeAdd, "Events.BeforeAdd"); 
     eventTypeNames.put(Events.BeforeAdopt, "Events.BeforeAdopt"); 
     eventTypeNames.put(Events.BeforeBind, "Events.BeforeBind"); 
     eventTypeNames.put(Events.BeforeCancelEdit, "Events.BeforeCancelEdit"); 
     eventTypeNames.put(Events.BeforeChange, "Events.BeforeChange"); 
     eventTypeNames 
       .put(Events.BeforeCheckChange, "Events.BeforeCheckChange"); 
     eventTypeNames.put(Events.BeforeClose, "Events.BeforeClose"); 
     eventTypeNames.put(Events.BeforeCollapse, "Events.BeforeCollapse"); 
     eventTypeNames.put(Events.BeforeComplete, "Events.BeforeComplete"); 
     eventTypeNames.put(Events.BeforeEdit, "Events.BeforeEdit"); 
     eventTypeNames.put(Events.BeforeExpand, "Events.BeforeExpand"); 
     eventTypeNames.put(Events.BeforeHide, "Events.BeforeHide"); 
     eventTypeNames.put(Events.BeforeLayout, "Events.BeforeLayout"); 
     eventTypeNames.put(Events.BeforeOpen, "Events.BeforeOpen"); 
     eventTypeNames.put(Events.BeforeOrphan, "Events.BeforeOrphan"); 
     eventTypeNames.put(Events.BeforeQuery, "Events.BeforeQuery"); 
     eventTypeNames.put(Events.BeforeRemove, "Events.BeforeRemove"); 
     eventTypeNames.put(Events.BeforeRender, "Events.BeforeRender"); 
     eventTypeNames.put(Events.BeforeSelect, "Events.BeforeSelect"); 
     eventTypeNames.put(Events.BeforeShow, "Events.BeforeShow"); 
     eventTypeNames.put(Events.BeforeStartEdit, "Events.BeforeStartEdit"); 
     eventTypeNames.put(Events.BeforeStateRestore, 
       "Events.BeforeStateRestore"); 
     eventTypeNames.put(Events.BeforeStateSave, "Events.BeforeStateSave"); 
     eventTypeNames.put(Events.BeforeSubmit, "Events.BeforeSubmit"); 
     eventTypeNames.put(Events.Bind, "Events.Bind"); 
     eventTypeNames.put(Events.Blur, "Events.Blur"); 
     eventTypeNames.put(Events.BodyScroll, "Events.BodyScroll"); 
     eventTypeNames.put(Events.BrowserEvent, "Events.BrowserEvent"); 
     eventTypeNames.put(Events.CancelEdit, "Events.CancelEdit"); 
     eventTypeNames.put(Events.CellClick, "Events.CellClick"); 
     eventTypeNames.put(Events.CellDoubleClick, "Events.CellDoubleClick"); 
     eventTypeNames.put(Events.CellMouseDown, "Events.CellMouseDown"); 
     eventTypeNames.put(Events.CellMouseUp, "Events.CellMouseUp"); 
     eventTypeNames.put(Events.Change, "Events.Change"); 
     eventTypeNames.put(Events.CheckChange, "Events.CheckChange"); 
     eventTypeNames.put(Events.CheckChanged, "Events.CheckChanged"); 
     eventTypeNames.put(Events.Clear, "Events.Clear"); 
     eventTypeNames.put(Events.Close, "Events.Close"); 
     eventTypeNames.put(Events.Collapse, "Events.Collapse"); 
     eventTypeNames.put(Events.ColumnClick, "Events.ColumnClick"); 
     eventTypeNames.put(Events.ColumnResize, "Events.ColumnResize"); 
     eventTypeNames.put(Events.Complete, "Events.Complete"); 
     eventTypeNames.put(Events.ContextMenu, "Events.ContextMenu"); 
     eventTypeNames.put(Events.Deactivate, "Events.Deactivate"); 
     eventTypeNames.put(Events.Detach, "Events.Detach"); 
     eventTypeNames.put(Events.Disable, "Events.Disable"); 
     eventTypeNames.put(Events.DoubleClick, "Events.DoubleClick"); 
     eventTypeNames.put(Events.DragCancel, "Events.DragCancel"); 
     eventTypeNames.put(Events.DragEnd, "Events.DragEnd"); 
     eventTypeNames.put(Events.DragEnter, "Events.DragEnter"); 
     eventTypeNames.put(Events.DragFail, "Events.DragFail"); 
     eventTypeNames.put(Events.DragLeave, "Events.DragLeave"); 
     eventTypeNames.put(Events.DragMove, "Events.DragMove"); 
     eventTypeNames.put(Events.DragStart, "Events.DragStart"); 
     eventTypeNames.put(Events.Drop, "Events.Drop"); 
     eventTypeNames.put(Events.EffectCancel, "Events.EffectCancel"); 
     eventTypeNames.put(Events.EffectComplete, "Events.EffectComplete"); 
     eventTypeNames.put(Events.EffectStart, "Events.EffectStart"); 
     eventTypeNames.put(Events.Enable, "Events.Enable"); 
     eventTypeNames.put(Events.Exception, "Events.Exception"); 
     eventTypeNames.put(Events.Expand, "Events.Expand"); 
     eventTypeNames.put(Events.Focus, "Events.Focus"); 
     eventTypeNames.put(Events.HeaderChange, "Events.HeaderChange"); 
     eventTypeNames.put(Events.HeaderClick, "Events.HeaderClick"); 
     eventTypeNames 
       .put(Events.HeaderContextMenu, "Events.HeaderContextMenu"); 
     eventTypeNames 
       .put(Events.HeaderDoubleClick, "Events.HeaderDoubleClick"); 
     eventTypeNames.put(Events.HeaderMouseDown, "Events.HeaderMouseDown"); 
     eventTypeNames.put(Events.HiddenChange, "Events.HiddenChange"); 
     eventTypeNames.put(Events.Hide, "Events.Hide"); 
     eventTypeNames.put(Events.Invalid, "Events.Invalid"); 
     eventTypeNames.put(Events.KeyDown, "Events.KeyDown"); 
     eventTypeNames.put(Events.KeyPress, "Events.KeyPress"); 
     eventTypeNames.put(Events.KeyUp, "Events.KeyUp"); 
     eventTypeNames.put(Events.LiveGridViewUpdate, 
       "Events.LiveGridViewUpdate"); 
     eventTypeNames.put(Events.Maximize, "Events.Maximize"); 
     eventTypeNames.put(Events.MenuHide, "Events.MenuHide"); 
     eventTypeNames.put(Events.MenuShow, "Events.MenuShow"); 
     eventTypeNames.put(Events.Minimize, "Events.Minimize"); 
     eventTypeNames.put(Events.Move, "Events.Move"); 
     eventTypeNames.put(Events.OnBlur, "Events.OnBlur"); 
     eventTypeNames.put(Events.OnChange, "Events.OnChange"); 
     eventTypeNames.put(Events.OnClick, "Events.OnClick"); 
     eventTypeNames.put(Events.OnContextMenu, "Events.OnContextMenu"); 
     eventTypeNames.put(Events.OnDoubleClick, "Events.OnDoubleClick"); 
     eventTypeNames.put(Events.OnError, "Events.OnError"); 
     eventTypeNames.put(Events.OnFocus, "Events.OnFocus"); 
     eventTypeNames.put(Events.OnKeyDown, "Events.OnKeyDown"); 
     eventTypeNames.put(Events.OnKeyPress, "Events.OnKeyPress"); 
     eventTypeNames.put(Events.OnKeyUp, "Events.OnKeyUp"); 
     eventTypeNames.put(Events.OnLoad, "Events.OnLoad"); 
     eventTypeNames.put(Events.OnLoseCapture, "Events.OnLoseCapture"); 
     eventTypeNames.put(Events.OnMouseDown, "Events.OnMouseDown"); 
     eventTypeNames.put(Events.OnMouseMove, "Events.OnMouseMove"); 
     eventTypeNames.put(Events.OnMouseOut, "Events.OnMouseOut"); 
     eventTypeNames.put(Events.OnMouseOver, "Events.OnMouseOver"); 
     eventTypeNames.put(Events.OnMouseUp, "Events.OnMouseUp"); 
     eventTypeNames.put(Events.OnMouseWheel, "Events.OnMouseWheel"); 
     eventTypeNames.put(Events.OnScroll, "Events.OnScroll"); 
     eventTypeNames.put(Events.Open, "Events.Open"); 
     eventTypeNames.put(Events.Orphan, "Events.Orphan"); 
     eventTypeNames.put(Events.Ready, "Events.Ready"); 
     eventTypeNames.put(Events.Refresh, "Events.Refresh"); 
     eventTypeNames.put(Events.Register, "Events.Register"); 
     eventTypeNames.put(Events.Remove, "Events.Remove"); 
     eventTypeNames.put(Events.Render, "Events.Render"); 
     eventTypeNames.put(Events.Resize, "Events.Resize"); 
     eventTypeNames.put(Events.ResizeEnd, "Events.ResizeEnd"); 
     eventTypeNames.put(Events.ResizeStart, "Events.ResizeStart"); 
     eventTypeNames.put(Events.Restore, "Events.Restore"); 
     eventTypeNames.put(Events.RowClick, "Events.RowClick"); 
     eventTypeNames.put(Events.RowDoubleClick, "Events.RowDoubleClick"); 
     eventTypeNames.put(Events.RowMouseDown, "Events.RowMouseDown"); 
     eventTypeNames.put(Events.RowMouseUp, "Events.RowMouseUp"); 
     eventTypeNames.put(Events.RowUpdated, "Events.RowUpdated"); 
     eventTypeNames.put(Events.Scroll, "Events.Scroll"); 
     eventTypeNames.put(Events.Select, "Events.Select"); 
     eventTypeNames.put(Events.SelectionChange, "Events.SelectionChange"); 
     eventTypeNames.put(Events.Show, "Events.Show"); 
     eventTypeNames.put(Events.SortChange, "Events.SortChange"); 
     eventTypeNames.put(Events.SpecialKey, "Events.SpecialKey"); 
     eventTypeNames.put(Events.StartEdit, "Events.StartEdit"); 
     eventTypeNames.put(Events.StateChange, "Events.StateChange"); 
     eventTypeNames.put(Events.StateRestore, "Events.StateRestore"); 
     eventTypeNames.put(Events.StateSave, "Events.StateSave"); 
     eventTypeNames.put(Events.Submit, "Events.Submit"); 
     eventTypeNames.put(Events.Toggle, "Events.Toggle"); 
     eventTypeNames.put(Events.TriggerClick, "Events.TriggerClick"); 
     eventTypeNames.put(Events.TwinTriggerClick, "Events.TwinTriggerClick"); 
     eventTypeNames.put(Events.UnBind, "Events.UnBind"); 
     eventTypeNames.put(Events.Unregister, "Events.Unregister"); 
     eventTypeNames.put(Events.Update, "Events.Update"); 
     eventTypeNames.put(Events.Valid, "Events.Valid"); 
     eventTypeNames.put(Events.ValidateDrop, "Events.ValidateDrop"); 
     eventTypeNames.put(Events.ValidateEdit, "Events.ValidateEdit"); 
     eventTypeNames.put(Events.ViewReady, "Events.ViewReady"); 
    } 
}