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a5b33b4118
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2260 b35dd754-fafc-0310-a699-88a17e54d16e
297 lines
10 KiB
Java
297 lines
10 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright (C) 2002-2003 Jive Software. All rights reserved.
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* ====================================================================
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* The Jive Software License (based on Apache Software License, Version 1.1)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by
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* Jive Software (http://www.jivesoftware.com)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Smack" and "Jive Software" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please
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* contact webmaster@jivesoftware.com.
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*
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* 5. Products derived from this software may not be called "Smack",
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* nor may "Smack" appear in their name, without prior written
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* permission of Jive Software.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*/
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package org.jivesoftware.smackx;
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import java.util.*;
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import org.jivesoftware.smack.packet.*;
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import org.jivesoftware.smackx.packet.DataForm;
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/**
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* Represents a Form for gathering data. The form could be of the following types:
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* <ul>
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* <li>form -> Indicates a form to fill out.</li>
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* <li>submit -> The form is filled out, and this is the data that is being returned from
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* the form.</li>
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* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
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* <li>result -> Data results being returned from a search, or some other query.</li>
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* </ul>
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*
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* Depending of the form's type different operations are available. For example, if the form
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* is of type "submit", it's not possible to add a new Field to the form.
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*
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* @author Gaston Dombiak
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*/
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public class Form {
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private DataForm dataForm;
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/**
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* Returns a new ReportedData if the packet is used for gathering data and includes an
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* extension that matches the elementName and namespace "x","jabber:x:data".
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*
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* @param packet the packet used for gathering data.
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*/
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public static Form getFormFrom(Packet packet) {
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// Check if the packet includes the DataForm extension
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PacketExtension packetExtension = packet.getExtension("x","jabber:x:data");
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if (packetExtension != null) {
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// Check if the existing DataForm is not a result of a search
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DataForm dataForm = (DataForm) packetExtension;
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if (dataForm.getReportedData() == null)
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return new Form(dataForm);
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}
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// Otherwise return null
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return null;
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}
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/**
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* Creates a new Form that will wrap an existing DataForm. The wrapped DataForm must be
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* used for gathering data.
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*
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* @param dataForm the data form used for gathering data.
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*/
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private Form(DataForm dataForm) {
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this.dataForm = dataForm;
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}
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/**
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* Creates a new Form of a given type from scratch.<p>
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*
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* Possible form types are:
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* <ul>
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* <li>form -> Indicates a form to fill out.</li>
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* <li>submit -> The form is filled out, and this is the data that is being returned from
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* the form.</li>
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* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
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* <li>result -> Data results being returned from a search, or some other query.</li>
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* </ul>
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*
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* @param type the form's type (e.g. form, submit,cancel,result).
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*/
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public Form(String type) {
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this.dataForm = new DataForm(type);
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}
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/**
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* Adds a new field to complete as part of the form.
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*
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* @param field the field to complete.
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*/
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public void addField(FormField field) {
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if (!isFormType()) {
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throw new IllegalStateException("Cannot add fields if the form is not of type \"form\"");
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}
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dataForm.addField(field);
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}
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/**
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* Adds a new answer as part of the form. The answer to add is a FormField whose variable
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* and value attributes are completed.
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*
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* @param variable the variable that was completed.
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* @param value the value that was answered.
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*/
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public void addAnswer(String variable, String value) {
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if (!isSubmitType()) {
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throw new IllegalStateException("Cannot add fields if the form is not of type \"submit\"");
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}
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FormField field = new FormField();
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field.setVariable(variable);
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field.addValue(value);
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dataForm.addField(field);
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}
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/**
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* Adds a new answer as part of the form. The answer to add is a FormField whose variable
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* and values attributes are completed.
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*
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* @param variable the variable that was completed.
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* @param values the values that were answered.
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*/
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public void addAnswer(String variable, List values) {
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if (!isSubmitType()) {
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throw new IllegalStateException("Cannot add fields if the form is not of type \"submit\"");
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}
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FormField field = new FormField();
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field.setVariable(variable);
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field.addValues(values);
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dataForm.addField(field);
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}
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/**
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* Returns an Iterator for the fields that are part of the form.
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*
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* @return an Iterator for the fields that are part of the form.
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*/
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public Iterator getFields() {
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return dataForm.getFields();
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}
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/**
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* Returns the instructions that explain how to fill out the form and what the form is about.
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*
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* @return instructions that explain how to fill out the form.
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*/
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public String getInstructions() {
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return dataForm.getInstructions();
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}
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/**
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* Returns the description of the data. It is similar to the title on a web page or an X
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* window. You can put a <title/> on either a form to fill out, or a set of data results.
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*
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* @return description of the data.
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*/
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public String getTitle() {
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return dataForm.getTitle();
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}
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/**
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* Returns the meaning of the data within the context. The data could be part of a form
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* to fill out, a form submission or data results.<p>
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*
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* Possible form types are:
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* <ul>
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* <li>form -> Indicates a form to fill out.</li>
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* <li>submit -> The form is filled out, and this is the data that is being returned from
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* the form.</li>
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* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
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* <li>result -> Data results being returned from a search, or some other query.</li>
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* </ul>
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*
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* @return the form's type.
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*/
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public String getType() {
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return dataForm.getType();
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}
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/**
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* Sets instructions that explain how to fill out the form and what the form is about.
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*
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* @param instructions instructions that explain how to fill out the form.
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*/
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public void setInstructions(String instructions) {
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dataForm.setInstructions(instructions);
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}
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/**
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* Sets the description of the data. It is similar to the title on a web page or an X window.
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* You can put a <title/> on either a form to fill out, or a set of data results.
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*
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* @param title description of the data.
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*/
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public void setTitle(String title) {
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dataForm.setTitle(title);
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}
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/**
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* Returns the wrapped DataForm.
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*
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* @return the wrapped DataForm.
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*/
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DataForm getDataForm() {
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return dataForm;
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}
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/**
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* Returns true if the form is a form to fill out.
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*
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* @return if the form is a form to fill out.
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*/
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private boolean isFormType() {
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return DataForm.TYPE_FORM.equals(dataForm.getType());
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}
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/**
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* Returns true if the form is a form to submit.
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*
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* @return if the form is a form to submit.
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*/
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private boolean isSubmitType() {
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return DataForm.TYPE_SUBMIT.equals(dataForm.getType());
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}
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/**
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* Returns a new Form to submit the completed values. The new Form will include the hidden
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* fields of the original form.
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*
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* @return a Form to submit the completed values.
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*/
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public Form createAnswerForm() {
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if (!isFormType()) {
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throw new IllegalStateException("Only forms of type \"form\" could be answered");
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}
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// Create a new Form
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Form form = new Form(DataForm.TYPE_SUBMIT);
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// Copy the hidden fields to the new form
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for (Iterator fields=getFields(); fields.hasNext();) {
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FormField field = (FormField)fields.next();
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if (FormField.TYPE_HIDDEN.equals(field.getType())) {
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// Since a hidden field could have many values we need to collect them in a list
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List values = new ArrayList();
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for (Iterator it=field.getValues();it.hasNext();) {
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values.add((String)it.next());
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}
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form.addAnswer(field.getVariable(), values);
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}
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}
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return form;
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}
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}
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