/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright 2003-2007 Jive Software.
*
* All rights reserved. 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.jivesoftware.smackx;
import org.jivesoftware.smack.util.StringUtils;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
/**
* Represents a field of a form. The field could be used to represent a question to complete,
* a completed question or a data returned from a search. The exact interpretation of the field
* depends on the context where the field is used.
*
* @author Gaston Dombiak
*/
public class FormField {
public static final String TYPE_BOOLEAN = "boolean";
public static final String TYPE_FIXED = "fixed";
public static final String TYPE_HIDDEN = "hidden";
public static final String TYPE_JID_MULTI = "jid-multi";
public static final String TYPE_JID_SINGLE = "jid-single";
public static final String TYPE_LIST_MULTI = "list-multi";
public static final String TYPE_LIST_SINGLE = "list-single";
public static final String TYPE_TEXT_MULTI = "text-multi";
public static final String TYPE_TEXT_PRIVATE = "text-private";
public static final String TYPE_TEXT_SINGLE = "text-single";
private String description;
private boolean required = false;
private String label;
private String variable;
private String type;
private final List<Option> options = new ArrayList<Option>();
private final List<String> values = new ArrayList<String>();
/**
* Creates a new FormField with the variable name that uniquely identifies the field
* in the context of the form.
*
* @param variable the variable name of the question.
*/
public FormField(String variable) {
this.variable = variable;
}
/**
* Creates a new FormField of type FIXED. The fields of type FIXED do not define a variable
* name.
*/
public FormField() {
this.type = FormField.TYPE_FIXED;
}
/**
* Returns a description that provides extra clarification about the question. This information
* could be presented to the user either in tool-tip, help button, or as a section of text
* before the question.<p>
* <p/>
* If the question is of type FIXED then the description should remain empty.
*
* @return description that provides extra clarification about the question.
*/
public String getDescription() {
return description;
}
/**
* Returns the label of the question which should give enough information to the user to
* fill out the form.
*
* @return label of the question.
*/
public String getLabel() {
return label;
}
/**
* Returns an Iterator for the available options that the user has in order to answer
* the question.
*
* @return Iterator for the available options.
*/
public Iterator<Option> getOptions() {
synchronized (options) {
return Collections.unmodifiableList(new ArrayList<Option>(options)).iterator();
}
}
/**
* Returns true if the question must be answered in order to complete the questionnaire.
*
* @return true if the question must be answered in order to complete the questionnaire.
*/
public boolean isRequired() {
return required;
}
/**
* Returns an indicative of the format for the data to answer. Valid formats are:
* <p/>
* <ul>
* <li>text-single -> single line or word of text
* <li>text-private -> instead of showing the user what they typed, you show ***** to
* protect it
* <li>text-multi -> multiple lines of text entry
* <li>list-single -> given a list of choices, pick one
* <li>list-multi -> given a list of choices, pick one or more
* <li>boolean -> 0 or 1, true or false, yes or no. Default value is 0
* <li>fixed -> fixed for putting in text to show sections, or just advertise your web
* site in the middle of the form
* <li>hidden -> is not given to the user at all, but returned with the questionnaire
* <li>jid-single -> Jabber ID - choosing a JID from your roster, and entering one based
* on the rules for a JID.
* <li>jid-multi -> multiple entries for JIDs
* </ul>
*
* @return format for the data to answer.
*/
public String getType() {
return type;
}
/**
* Returns an Iterator for the default values of the question if the question is part
* of a form to fill out. Otherwise, returns an Iterator for the answered values of
* the question.
*
* @return an Iterator for the default values or answered values of the question.
*/
public Iterator<String> getValues() {
synchronized (values) {
return Collections.unmodifiableList(new ArrayList<String>(values)).iterator();
}
}
/**
* Returns the variable name that the question is filling out.
*
* @return the variable name of the question.
*/
public String getVariable() {
return variable;
}
/**
* Sets a description that provides extra clarification about the question. This information
* could be presented to the user either in tool-tip, help button, or as a section of text
* before the question.<p>
* <p/>
* If the question is of type FIXED then the description should remain empty.
*
* @param description provides extra clarification about the question.
*/
public void setDescription(String description) {
this.description = description;
}
/**
* Sets the label of the question which should give enough information to the user to
* fill out the form.
*
* @param label the label of the question.
*/
public void setLabel(String label) {
this.label = label;
}
/**
* Sets if the question must be answered in order to complete the questionnaire.
*
* @param required if the question must be answered in order to complete the questionnaire.
*/
public void setRequired(boolean required) {
this.required = required;
}
/**
* Sets an indicative of the format for the data to answer. Valid formats are:
* <p/>
* <ul>
* <li>text-single -> single line or word of text
* <li>text-private -> instead of showing the user what they typed, you show ***** to
* protect it
* <li>text-multi -> multiple lines of text entry
* <li>list-single -> given a list of choices, pick one
* <li>list-multi -> given a list of choices, pick one or more
* <li>boolean -> 0 or 1, true or false, yes or no. Default value is 0
* <li>fixed -> fixed for putting in text to show sections, or just advertise your web
* site in the middle of the form
* <li>hidden -> is not given to the user at all, but returned with the questionnaire
* <li>jid-single -> Jabber ID - choosing a JID from your roster, and entering one based
* on the rules for a JID.
* <li>jid-multi -> multiple entries for JIDs
* </ul>
*
* @param type an indicative of the format for the data to answer.
*/
public void setType(String type) {
this.type = type;
}
/**
* Adds a default value to the question if the question is part of a form to fill out.
* Otherwise, adds an answered value to the question.
*
* @param value a default value or an answered value of the question.
*/
public void addValue(String value) {
synchronized (values) {
values.add(value);
}
}
/**
* Adds a default values to the question if the question is part of a form to fill out.
* Otherwise, adds an answered values to the question.
*
* @param newValues default values or an answered values of the question.
*/
public void addValues(List<String> newValues) {
synchronized (values) {
values.addAll(newValues);
}
}
/**
* Removes all the values of the field.
*/
protected void resetValues() {
synchronized (values) {
values.removeAll(new ArrayList<String>(values));
}
}
/**
* Adss an available options to the question that the user has in order to answer
* the question.
*
* @param option a new available option for the question.
*/
public void addOption(Option option) {
synchronized (options) {
options.add(option);
}
}
public String toXML() {
StringBuilder buf = new StringBuilder();
buf.append("<field");
// Add attributes
if (getLabel() != null) {
buf.append(" label=\"").append(getLabel()).append("\"");
}
if (getVariable() != null) {
buf.append(" var=\"").append(getVariable()).append("\"");
}
if (getType() != null) {
buf.append(" type=\"").append(getType()).append("\"");
}
buf.append(">");
// Add elements
if (getDescription() != null) {
buf.append("<desc>").append(getDescription()).append("</desc>");
}
if (isRequired()) {
buf.append("<required/>");
}
// Loop through all the values and append them to the string buffer
for (Iterator<String> i = getValues(); i.hasNext();) {
buf.append("<value>").append(i.next()).append("</value>");
}
// Loop through all the values and append them to the string buffer
for (Iterator<Option> i = getOptions(); i.hasNext();) {
buf.append((i.next()).toXML());
}
buf.append("</field>");
return buf.toString();
}
@Override
public boolean equals(Object obj) {
if (obj == null)
return false;
if (obj == this)
return true;
if (!(obj instanceof FormField))
return false;
FormField other = (FormField) obj;
return toXML().equals(other.toXML());
}
@Override
public int hashCode() {
return toXML().hashCode();
}
/**
* Represents the available option of a given FormField.
*
* @author Gaston Dombiak
*/
public static class Option {
private String label;
private String value;
public Option(String value) {
this.value = value;
}
public Option(String label, String value) {
this.label = label;
this.value = value;
}
/**
* Returns the label that represents the option.
*
* @return the label that represents the option.
*/
public String getLabel() {
return label;
}
/**
* Returns the value of the option.
*
* @return the value of the option.
*/
public String getValue() {
return value;
}
@Override
public String toString() {
return getLabel();
}
public String toXML() {
StringBuilder buf = new StringBuilder();
buf.append("<option");
// Add attribute
if (getLabel() != null) {
buf.append(" label=\"").append(getLabel()).append("\"");
}
buf.append(">");
// Add element
buf.append("<value>").append(StringUtils.escapeForXML(getValue())).append("</value>");
buf.append("</option>");
return buf.toString();
}
@Override
public boolean equals(Object obj) {
if (obj == null)
return false;
if (obj == this)
return true;
if (obj.getClass() != getClass())
return false;
Option other = (Option) obj;
if (!value.equals(other.value))
return false;
String thisLabel = label == null ? "" : label;
String otherLabel = other.label == null ? "" : other.label;
if (!thisLabel.equals(otherLabel))
return false;
return true;
}
@Override
public int hashCode() {
int result = 1;
result = 37 * result + value.hashCode();
result = 37 * result + (label == null ? 0 : label.hashCode());
return result;
}
}
}