mirror of
https://github.com/vanitasvitae/Smack.git
synced 2024-12-20 17:47:57 +01:00
5e559d0ee2
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@10875 b35dd754-fafc-0310-a699-88a17e54d16e
545 lines
23 KiB
Java
545 lines
23 KiB
Java
/**
|
|
* $RCSfile$
|
|
* $Revision$
|
|
* $Date$
|
|
*
|
|
* 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.packet.Packet;
|
|
import org.jivesoftware.smack.packet.PacketExtension;
|
|
import org.jivesoftware.smackx.packet.DataForm;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Iterator;
|
|
import java.util.List;
|
|
import java.util.StringTokenizer;
|
|
|
|
/**
|
|
* Represents a Form for gathering data. The form could be of the following types:
|
|
* <ul>
|
|
* <li>form -> Indicates a form to fill out.</li>
|
|
* <li>submit -> The form is filled out, and this is the data that is being returned from
|
|
* the form.</li>
|
|
* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
|
|
* <li>result -> Data results being returned from a search, or some other query.</li>
|
|
* </ul>
|
|
*
|
|
* Depending of the form's type different operations are available. For example, it's only possible
|
|
* to set answers if the form is of type "submit".
|
|
*
|
|
* @author Gaston Dombiak
|
|
*/
|
|
public class Form {
|
|
|
|
public static final String TYPE_FORM = "form";
|
|
public static final String TYPE_SUBMIT = "submit";
|
|
public static final String TYPE_CANCEL = "cancel";
|
|
public static final String TYPE_RESULT = "result";
|
|
|
|
private DataForm dataForm;
|
|
|
|
/**
|
|
* Returns a new ReportedData if the packet is used for gathering data and includes an
|
|
* extension that matches the elementName and namespace "x","jabber:x:data".
|
|
*
|
|
* @param packet the packet used for gathering data.
|
|
* @return the data form parsed from the packet or <tt>null</tt> if there was not
|
|
* a form in the packet.
|
|
*/
|
|
public static Form getFormFrom(Packet packet) {
|
|
// Check if the packet includes the DataForm extension
|
|
PacketExtension packetExtension = packet.getExtension("x","jabber:x:data");
|
|
if (packetExtension != null) {
|
|
// Check if the existing DataForm is not a result of a search
|
|
DataForm dataForm = (DataForm) packetExtension;
|
|
if (dataForm.getReportedData() == null)
|
|
return new Form(dataForm);
|
|
}
|
|
// Otherwise return null
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Creates a new Form that will wrap an existing DataForm. The wrapped DataForm must be
|
|
* used for gathering data.
|
|
*
|
|
* @param dataForm the data form used for gathering data.
|
|
*/
|
|
public Form(DataForm dataForm) {
|
|
this.dataForm = dataForm;
|
|
}
|
|
|
|
/**
|
|
* Creates a new Form of a given type from scratch.<p>
|
|
*
|
|
* Possible form types are:
|
|
* <ul>
|
|
* <li>form -> Indicates a form to fill out.</li>
|
|
* <li>submit -> The form is filled out, and this is the data that is being returned from
|
|
* the form.</li>
|
|
* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
|
|
* <li>result -> Data results being returned from a search, or some other query.</li>
|
|
* </ul>
|
|
*
|
|
* @param type the form's type (e.g. form, submit,cancel,result).
|
|
*/
|
|
public Form(String type) {
|
|
this.dataForm = new DataForm(type);
|
|
}
|
|
|
|
/**
|
|
* Adds a new field to complete as part of the form.
|
|
*
|
|
* @param field the field to complete.
|
|
*/
|
|
public void addField(FormField field) {
|
|
dataForm.addField(field);
|
|
}
|
|
|
|
/**
|
|
* Sets a new String value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.<p>
|
|
*
|
|
* If the value to set to the field is not a basic type (e.g. String, boolean, int, etc.) you
|
|
* can use this message where the String value is the String representation of the object.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the String value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type..
|
|
*/
|
|
public void setAnswer(String variable, String value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_TEXT_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_PRIVATE.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_SINGLE.equals(field.getType())
|
|
&& !FormField.TYPE_JID_SINGLE.equals(field.getType())
|
|
&& !FormField.TYPE_HIDDEN.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type String.");
|
|
}
|
|
setAnswer(field, value);
|
|
}
|
|
|
|
/**
|
|
* Sets a new int value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the int value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type.
|
|
*/
|
|
public void setAnswer(String variable, int value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_TEXT_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_PRIVATE.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_SINGLE.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type int.");
|
|
}
|
|
setAnswer(field, value);
|
|
}
|
|
|
|
/**
|
|
* Sets a new long value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the long value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type.
|
|
*/
|
|
public void setAnswer(String variable, long value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_TEXT_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_PRIVATE.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_SINGLE.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type long.");
|
|
}
|
|
setAnswer(field, value);
|
|
}
|
|
|
|
/**
|
|
* Sets a new float value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the float value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type.
|
|
*/
|
|
public void setAnswer(String variable, float value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_TEXT_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_PRIVATE.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_SINGLE.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type float.");
|
|
}
|
|
setAnswer(field, value);
|
|
}
|
|
|
|
/**
|
|
* Sets a new double value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the double value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type.
|
|
*/
|
|
public void setAnswer(String variable, double value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_TEXT_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_PRIVATE.equals(field.getType())
|
|
&& !FormField.TYPE_TEXT_SINGLE.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type double.");
|
|
}
|
|
setAnswer(field, value);
|
|
}
|
|
|
|
/**
|
|
* Sets a new boolean value to a given form's field. The field whose variable matches the
|
|
* requested variable will be completed with the specified value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable name that was completed.
|
|
* @param value the boolean value that was answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable or
|
|
* if the answer type does not correspond with the field type.
|
|
*/
|
|
public void setAnswer(String variable, boolean value) {
|
|
FormField field = getField(variable);
|
|
if (field == null) {
|
|
throw new IllegalArgumentException("Field not found for the specified variable name.");
|
|
}
|
|
if (!FormField.TYPE_BOOLEAN.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field is not of type boolean.");
|
|
}
|
|
setAnswer(field, (value ? "1" : "0"));
|
|
}
|
|
|
|
/**
|
|
* Sets a new Object value to a given form's field. In fact, the object representation
|
|
* (i.e. #toString) will be the actual value of the field.<p>
|
|
*
|
|
* If the value to set to the field is not a basic type (e.g. String, boolean, int, etc.) you
|
|
* will need to use {@link #setAnswer(String, String))} where the String value is the
|
|
* String representation of the object.<p>
|
|
*
|
|
* Before setting the new value to the field we will check if the form is of type submit. If
|
|
* the form isn't of type submit means that it's not possible to complete the form and an
|
|
* exception will be thrown.
|
|
*
|
|
* @param field the form field that was completed.
|
|
* @param value the Object value that was answered. The object representation will be the
|
|
* actual value.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
*/
|
|
private void setAnswer(FormField field, Object value) {
|
|
if (!isSubmitType()) {
|
|
throw new IllegalStateException("Cannot set an answer if the form is not of type " +
|
|
"\"submit\"");
|
|
}
|
|
field.resetValues();
|
|
field.addValue(value.toString());
|
|
}
|
|
|
|
/**
|
|
* Sets a new values to a given form's field. The field whose variable matches the requested
|
|
* variable will be completed with the specified values. If no field could be found for
|
|
* the specified variable then an exception will be raised.<p>
|
|
*
|
|
* The Objects contained in the List could be of any type. The String representation of them
|
|
* (i.e. #toString) will be actually used when sending the answer to the server.
|
|
*
|
|
* @param variable the variable that was completed.
|
|
* @param values the values that were answered.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable.
|
|
*/
|
|
public void setAnswer(String variable, List<String> values) {
|
|
if (!isSubmitType()) {
|
|
throw new IllegalStateException("Cannot set an answer if the form is not of type " +
|
|
"\"submit\"");
|
|
}
|
|
FormField field = getField(variable);
|
|
if (field != null) {
|
|
// Check that the field can accept a collection of values
|
|
if (!FormField.TYPE_JID_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_LIST_MULTI.equals(field.getType())
|
|
&& !FormField.TYPE_LIST_SINGLE.equals(field.getType())
|
|
&& !FormField.TYPE_HIDDEN.equals(field.getType())) {
|
|
throw new IllegalArgumentException("This field only accept list of values.");
|
|
}
|
|
// Clear the old values
|
|
field.resetValues();
|
|
// Set the new values. The string representation of each value will be actually used.
|
|
field.addValues(values);
|
|
}
|
|
else {
|
|
throw new IllegalArgumentException("Couldn't find a field for the specified variable.");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the default value as the value of a given form's field. The field whose variable matches
|
|
* the requested variable will be completed with its default value. If no field could be found
|
|
* for the specified variable then an exception will be raised.
|
|
*
|
|
* @param variable the variable to complete with its default value.
|
|
* @throws IllegalStateException if the form is not of type "submit".
|
|
* @throws IllegalArgumentException if the form does not include the specified variable.
|
|
*/
|
|
public void setDefaultAnswer(String variable) {
|
|
if (!isSubmitType()) {
|
|
throw new IllegalStateException("Cannot set an answer if the form is not of type " +
|
|
"\"submit\"");
|
|
}
|
|
FormField field = getField(variable);
|
|
if (field != null) {
|
|
// Clear the old values
|
|
field.resetValues();
|
|
// Set the default value
|
|
for (Iterator<String> it = field.getValues(); it.hasNext();) {
|
|
field.addValue(it.next());
|
|
}
|
|
}
|
|
else {
|
|
throw new IllegalArgumentException("Couldn't find a field for the specified variable.");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an Iterator for the fields that are part of the form.
|
|
*
|
|
* @return an Iterator for the fields that are part of the form.
|
|
*/
|
|
public Iterator<FormField> getFields() {
|
|
return dataForm.getFields();
|
|
}
|
|
|
|
/**
|
|
* Returns the field of the form whose variable matches the specified variable.
|
|
* The fields of type FIXED will never be returned since they do not specify a
|
|
* variable.
|
|
*
|
|
* @param variable the variable to look for in the form fields.
|
|
* @return the field of the form whose variable matches the specified variable.
|
|
*/
|
|
public FormField getField(String variable) {
|
|
if (variable == null || variable.equals("")) {
|
|
throw new IllegalArgumentException("Variable must not be null or blank.");
|
|
}
|
|
// Look for the field whose variable matches the requested variable
|
|
FormField field;
|
|
for (Iterator<FormField> it=getFields();it.hasNext();) {
|
|
field = it.next();
|
|
if (variable.equals(field.getVariable())) {
|
|
return field;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the instructions that explain how to fill out the form and what the form is about.
|
|
*
|
|
* @return instructions that explain how to fill out the form.
|
|
*/
|
|
public String getInstructions() {
|
|
StringBuilder sb = new StringBuilder();
|
|
// Join the list of instructions together separated by newlines
|
|
for (Iterator it = dataForm.getInstructions(); it.hasNext();) {
|
|
sb.append((String) it.next());
|
|
// If this is not the last instruction then append a newline
|
|
if (it.hasNext()) {
|
|
sb.append("\n");
|
|
}
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the description of the data. It is similar to the title on a web page or an X
|
|
* window. You can put a <title/> on either a form to fill out, or a set of data results.
|
|
*
|
|
* @return description of the data.
|
|
*/
|
|
public String getTitle() {
|
|
return dataForm.getTitle();
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the meaning of the data within the context. The data could be part of a form
|
|
* to fill out, a form submission or data results.<p>
|
|
*
|
|
* Possible form types are:
|
|
* <ul>
|
|
* <li>form -> Indicates a form to fill out.</li>
|
|
* <li>submit -> The form is filled out, and this is the data that is being returned from
|
|
* the form.</li>
|
|
* <li>cancel -> The form was cancelled. Tell the asker that piece of information.</li>
|
|
* <li>result -> Data results being returned from a search, or some other query.</li>
|
|
* </ul>
|
|
*
|
|
* @return the form's type.
|
|
*/
|
|
public String getType() {
|
|
return dataForm.getType();
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets instructions that explain how to fill out the form and what the form is about.
|
|
*
|
|
* @param instructions instructions that explain how to fill out the form.
|
|
*/
|
|
public void setInstructions(String instructions) {
|
|
// Split the instructions into multiple instructions for each existent newline
|
|
ArrayList<String> instructionsList = new ArrayList<String>();
|
|
StringTokenizer st = new StringTokenizer(instructions, "\n");
|
|
while (st.hasMoreTokens()) {
|
|
instructionsList.add(st.nextToken());
|
|
}
|
|
// Set the new list of instructions
|
|
dataForm.setInstructions(instructionsList);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the description of the data. It is similar to the title on a web page or an X window.
|
|
* You can put a <title/> on either a form to fill out, or a set of data results.
|
|
*
|
|
* @param title description of the data.
|
|
*/
|
|
public void setTitle(String title) {
|
|
dataForm.setTitle(title);
|
|
}
|
|
|
|
/**
|
|
* Returns a DataForm that serves to send this Form to the server. If the form is of type
|
|
* submit, it may contain fields with no value. These fields will be removed since they only
|
|
* exist to assist the user while editing/completing the form in a UI.
|
|
*
|
|
* @return the wrapped DataForm.
|
|
*/
|
|
public DataForm getDataFormToSend() {
|
|
if (isSubmitType()) {
|
|
// Create a new DataForm that contains only the answered fields
|
|
DataForm dataFormToSend = new DataForm(getType());
|
|
for(Iterator<FormField> it=getFields();it.hasNext();) {
|
|
FormField field = it.next();
|
|
if (field.getValues().hasNext()) {
|
|
dataFormToSend.addField(field);
|
|
}
|
|
}
|
|
return dataFormToSend;
|
|
}
|
|
return dataForm;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the form is a form to fill out.
|
|
*
|
|
* @return if the form is a form to fill out.
|
|
*/
|
|
private boolean isFormType() {
|
|
return TYPE_FORM.equals(dataForm.getType());
|
|
}
|
|
|
|
/**
|
|
* Returns true if the form is a form to submit.
|
|
*
|
|
* @return if the form is a form to submit.
|
|
*/
|
|
private boolean isSubmitType() {
|
|
return TYPE_SUBMIT.equals(dataForm.getType());
|
|
}
|
|
|
|
/**
|
|
* Returns a new Form to submit the completed values. The new Form will include all the fields
|
|
* of the original form except for the fields of type FIXED. Only the HIDDEN fields will
|
|
* include the same value of the original form. The other fields of the new form MUST be
|
|
* completed. If a field remains with no answer when sending the completed form, then it won't
|
|
* be included as part of the completed form.<p>
|
|
*
|
|
* The reason why the fields with variables are included in the new form is to provide a model
|
|
* for binding with any UI. This means that the UIs will use the original form (of type
|
|
* "form") to learn how to render the form, but the UIs will bind the fields to the form of
|
|
* type submit.
|
|
*
|
|
* @return a Form to submit the completed values.
|
|
*/
|
|
public Form createAnswerForm() {
|
|
if (!isFormType()) {
|
|
throw new IllegalStateException("Only forms of type \"form\" could be answered");
|
|
}
|
|
// Create a new Form
|
|
Form form = new Form(TYPE_SUBMIT);
|
|
for (Iterator<FormField> fields=getFields(); fields.hasNext();) {
|
|
FormField field = fields.next();
|
|
// Add to the new form any type of field that includes a variable.
|
|
// Note: The fields of type FIXED are the only ones that don't specify a variable
|
|
if (field.getVariable() != null) {
|
|
FormField newField = new FormField(field.getVariable());
|
|
newField.setType(field.getType());
|
|
form.addField(newField);
|
|
// Set the answer ONLY to the hidden fields
|
|
if (FormField.TYPE_HIDDEN.equals(field.getType())) {
|
|
// Since a hidden field could have many values we need to collect them
|
|
// in a list
|
|
List<String> values = new ArrayList<String>();
|
|
for (Iterator<String> it=field.getValues();it.hasNext();) {
|
|
values.add(it.next());
|
|
}
|
|
form.setAnswer(field.getVariable(), values);
|
|
}
|
|
}
|
|
}
|
|
return form;
|
|
}
|
|
|
|
}
|