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+/**
+ * $RCSfile$
+ * $Revision$
+ * $Date$
+ *
+ * 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;
+ }
+ }
+}