/**
* Copyright (c) 2012-2013, Michael Yang 杨福海 (www.yangfuhai.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.tsz.afinal.annotation.view;
import java.lang.reflect.Method;
import net.tsz.afinal.exception.ViewException;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
public class EventListener implements OnClickListener, OnLongClickListener, OnItemClickListener, OnItemSelectedListener,OnItemLongClickListener {
private Object handler;
private String clickMethod;
private String longClickMethod;
private String itemClickMethod;
private String itemSelectMethod;
private String nothingSelectedMethod;
private String itemLongClickMehtod;
public EventListener(Object handler) {
this.handler = handler;
}
public EventListener click(String method){
this.clickMethod = method;
return this;
}
public EventListener longClick(String method){
this.longClickMethod = method;
return this;
}
public EventListener itemLongClick(String method){
this.itemLongClickMehtod = method;
return this;
}
public EventListener itemClick(String method){
this.itemClickMethod = method;
return this;
}
public EventListener select(String method){
this.itemSelectMethod = method;
return this;
}
public EventListener noSelect(String method){
this.nothingSelectedMethod = method;
return this;
}
public boolean onLongClick(View v) {
return invokeLongClickMethod(handler,longClickMethod,v);
}
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
return invokeItemLongClickMethod(handler,itemLongClickMehtod,arg0,arg1,arg2,arg3);
}
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
invokeItemSelectMethod(handler,itemSelectMethod,arg0,arg1,arg2,arg3);
}
public void onNothingSelected(AdapterView<?> arg0) {
invokeNoSelectMethod(handler,nothingSelectedMethod,arg0);
}
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
invokeItemClickMethod(handler,itemClickMethod,arg0,arg1,arg2,arg3);
}
public void onClick(View v) {
invokeClickMethod(handler, clickMethod, v);
}
private static Object invokeClickMethod(Object handler, String methodName, Object... params){
if(handler == null) return null;
Method method = null;
try{
method = handler.getClass().getDeclaredMethod(methodName,View.class);
if(method!=null)
return method.invoke(handler, params);
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return null;
}
private static boolean invokeLongClickMethod(Object handler, String methodName, Object... params){
if(handler == null) return false;
Method method = null;
try{
//public boolean onLongClick(View v)
method = handler.getClass().getDeclaredMethod(methodName,View.class);
if(method!=null){
Object obj = method.invoke(handler, params);
return obj==null?false:Boolean.valueOf(obj.toString());
}
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return false;
}
private static Object invokeItemClickMethod(Object handler, String methodName, Object... params){
if(handler == null) return null;
Method method = null;
try{
///onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)
method = handler.getClass().getDeclaredMethod(methodName,AdapterView.class,View.class,int.class,long.class);
if(method!=null)
return method.invoke(handler, params);
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return null;
}
private static boolean invokeItemLongClickMethod(Object handler, String methodName, Object... params){
if(handler == null) throw new ViewException("invokeItemLongClickMethod: handler is null :");
Method method = null;
try{
///onItemLongClick(AdapterView<?> arg0, View arg1, int arg2,long arg3)
method = handler.getClass().getDeclaredMethod(methodName,AdapterView.class,View.class,int.class,long.class);
if(method!=null){
Object obj = method.invoke(handler, params);
return Boolean.valueOf(obj==null?false:Boolean.valueOf(obj.toString()));
}
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return false;
}
private static Object invokeItemSelectMethod(Object handler, String methodName, Object... params){
if(handler == null) return null;
Method method = null;
try{
///onItemSelected(AdapterView<?> arg0, View arg1, int arg2,long arg3)
method = handler.getClass().getDeclaredMethod(methodName,AdapterView.class,View.class,int.class,long.class);
if(method!=null)
return method.invoke(handler, params);
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return null;
}
private static Object invokeNoSelectMethod(Object handler, String methodName, Object... params){
if(handler == null) return null;
Method method = null;
try{
//onNothingSelected(AdapterView<?> arg0)
method = handler.getClass().getDeclaredMethod(methodName,AdapterView.class);
if(method!=null)
return method.invoke(handler, params);
else
throw new ViewException("no such method:"+methodName);
}catch(Exception e){
e.printStackTrace();
}
return null;
}
}