TriggerActionSelector.java

/*******************************************************************************
 * Copyright 2011 The Regents of the University of California
 * 
 * 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 org.ohmage.triggers.ui;

import org.ohmage.R;
import org.ohmage.triggers.base.TriggerActionDesc;
import org.ohmage.triggers.config.TrigUserConfig;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnMultiChoiceClickListener;

public class TriggerActionSelector 
			 implements OnClickListener, 
			 OnMultiChoiceClickListener {
	
	public interface OnClickListener {
		public void onDone(TriggerActionSelector selector, String actDesc);
	}
	

	private TriggerActionDesc mActDesc = new TriggerActionDesc();
	private String[] mActions;
	private boolean[] mSelected;
	private TriggerActionSelector.OnClickListener mOnClickListener;
	private int mTag;
	private AlertDialog mDialog = null;
	
	
	public TriggerActionSelector(String[] actions, String actDesc) {
		mActDesc.loadString(actDesc);
		
		mActions = new String[actions.length];
		System.arraycopy(actions, 0, mActions, 0, actions.length);
		
		mSelected = new boolean[actions.length];
		for(int i = 0; i < mSelected.length; i++) {
			mSelected[i] = mActDesc.hasSurvey(mActions[i]) ? true
													       : false;
		}
	}
	
	
	public TriggerActionSelector setOnClickListener(
							TriggerActionSelector.OnClickListener listener) {
		
		mOnClickListener  = listener;
		return this;
	}
	
	public TriggerActionSelector setTag(int tag) {
		mTag = tag;
		return this;
	}
	
	public int getTag() {
		return mTag;
	}
	
	public Dialog createDialog(Context context, boolean adminMode) {
		 AlertDialog.Builder builder = 
			 			new AlertDialog.Builder(context)
					   .setTitle(R.string.trigger_select_actions)
					   .setNegativeButton(R.string.cancel, this)
					   .setMultiChoiceItems(mActions, mSelected, this);
		 
		 if(adminMode || TrigUserConfig.editTriggerActions) {
			 builder.setPositiveButton(R.string.done, this);
		 }
		 
			
		 mDialog = builder.create();
		 return mDialog;
	}
	

	@Override
	public void onClick(DialogInterface dialog, int which) {
		if(which == AlertDialog.BUTTON_POSITIVE) {
			mActDesc.clearAllSurveys();
			
			for(int i = 0; i < mSelected.length; i++) {
				if(mSelected[i]) {
					mActDesc.addSurvey(mActions[i]);
				}
			}
			
			if(mOnClickListener != null) {
				mOnClickListener.onDone(this, mActDesc.toString());
			}
		}
		
		dialog.dismiss();
	}

	@Override
	public void onClick(DialogInterface dialog, int which, boolean isChecked) {
		mSelected[which] = isChecked;
	}
}