..Souce Code of org.moca.procedure.

package org.moca.procedure;

import java.util.ArrayList;

import java.util.HashSet;

import java.util.List;

import org.moca.util.MocaUtil;

import org.w3c.dom.Node;

import android.content.Context;

import android.text.TextUtils;

import android.util.Log;

import android.view.View;

import android.view.ViewGroup;

import android.widget.CheckBox;

import android.widget.LinearLayout;

import android.widget.ScrollView;

/**

* MultiSelectElement is a ProcedureElement that creates a procedure page with

* multiple check-box items that can be selected.

*/

public class MultiSelectElement extends ProcedureElement {

private List choicelist;

private String[] choices;

private ArrayList cblist;

public static final String TOKEN_DELIMITER = “,”;

@Override

public ElementType getType() {

return ElementType.MULTI_SELECT;

}

@Override

protected View createView(Context c) {

ScrollView sv = new ScrollView(c);

LinearLayout ll = new LinearLayout(c);

HashSet selectedSet = new HashSet();

if(answer == null)

answer = “”;

// we’ve got a problem if there are TOKEN_DELIMITERs in the value!

// since getAnswer separates responses using TOKEN_DELIMITER

String[] values = answer.split(TOKEN_DELIMITER);

for(String val : values) {

selectedSet.add(val);

}

ll.setOrientation(LinearLayout.VERTICAL);

choicelist = java.util.Arrays.asList(choices);

cblist = new ArrayList();

for(Object choice : choicelist) {

CheckBox cb = new CheckBox(c);

cb.setText((String)choice);

cb.setChecked(selectedSet.contains(choice));

cblist.add(cb);

ll.addView(cb);

}

sv.addView(ll, new ViewGroup.LayoutParams(-1,-1));

return encapsulateQuestion(c, sv);

}

public void setAnswer(String answer) {

this.answer = answer;

if(isViewActive()) {

String[] answers = answer.split(TOKEN_DELIMITER);

HashSet answerSet = new HashSet();

for(String a : answers) {

answerSet.add(a);

Log.i(TAG, “SetAnswer a:” + a + “:”);

}

for (CheckBox c : cblist) {

Log.i(TAG, “SetAnswer – :” + c.getText().toString() + “:”);

if(answerSet.contains(c.getText().toString())) {

c.setChecked(true);

} else{

c.setChecked(false);

}

}

}

}

/**

* Generate a string representing all of the user-selected elements delimited by

* TOKEN_DELIMITER.

*/

public String getAnswer() {

if(!isViewActive())

return answer;

String s = “”;

boolean any = false;

for (CheckBox c : cblist) {

if (c.isChecked()) {

s += c.getText().toString() + TOKEN_DELIMITER;

any = true;

}

}

if(any)

s = s.substring(0, s.length()-1);

return s;

}

/**

* Make question and response into an XML string for storing or transmission.

*/

public void buildXML(StringBuilder sb) {

sb.append(“\n”);

}

private MultiSelectElement(String id, String question, String answer, String concept, String[] choices) {

super(id, question, answer, concept);

this.choices = choices;

}

/**

* Create a MultiSelectElement from an XML procedure definition.

*/

public static MultiSelectElement fromXML(String id, String question, String answer, String concept, Node node) {

String choicesStr = MocaUtil.getNodeAttributeOrDefault(node, “choices”, “”);

return new MultiSelectElement(id, question, answer, concept, choicesStr.split(“,”));

}

}

Related Class of org.moca.procedure.MultiSelectElement

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