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Changes the fields that are included in the form to use for answering the original form. 

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2285 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Gaston Dombiak 2004-04-07 19:50:56 +00:00 committed by gdombiak
parent 6c7d71e9ca
commit 6023b4fa64
1 changed files with 92 additions and 30 deletions
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122
source/org/jivesoftware/smackx/Form.java
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@ -67,8 +67,8 @@ import org.jivesoftware.smackx.packet.DataForm;
* <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, if the form
* is of type "submit", it's not possible to add a new Field to the form.
* 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
*/
@ -132,47 +132,57 @@ public class Form {
* Adds a new field to complete as part of the form.
*
* @param field the field to complete.
* @throws IllegalStateException if the form is not of type "form".
*/
public void addField(FormField field) {
if (!isFormType()) {
throw new IllegalStateException("Cannot add fields if the form is not of type \"form\"");
}
dataForm.addField(field);
}
/**
* Adds a new answer as part of the form. The answer to add is a FormField whose variable
* and value attributes are completed.
* Sets a new answer as part of a 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 that was completed.
* @param value the 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.
*/
public void addAnswer(String variable, String value) {
public void setAnswer(String variable, String value) {
if (!isSubmitType()) {
throw new IllegalStateException("Cannot add fields if the form is not of type \"submit\"");
}
FormField field = new FormField(variable);
field.addValue(value);
dataForm.addField(field);
FormField field = getField(variable);
if (field != null) {
field.resetValues();
field.addValue(value);
}
else {
throw new IllegalArgumentException("Couldn't find a field for the specified variable.");
}
}
/**
* Adds a new answer as part of the form. The answer to add is a FormField whose variable
* and values attributes are completed.
* Sets new answers as part of a 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.
*
* @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 addAnswer(String variable, List values) {
public void setAnswer(String variable, List values) {
if (!isSubmitType()) {
throw new IllegalStateException("Cannot add fields if the form is not of type \"submit\"");
}
FormField field = new FormField(variable);
field.addValues(values);
dataForm.addField(field);
FormField field = getField(variable);
if (field != null) {
field.resetValues();
field.addValues(values);
}
else {
throw new IllegalArgumentException("Couldn't find a field for the specified variable.");
}
}
/**
@ -184,6 +194,28 @@ public class Form {
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 it=getFields();it.hasNext();) {
field = (FormField)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.
@ -247,11 +279,27 @@ public class Form {
}
/**
* Returns the wrapped DataForm.
* 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 remove since they only
* exist to assist the user while editing/completing the form in a UI.
*
* @return the wrapped DataForm.
*/
DataForm getDataForm() {
DataForm getDataFormToSend() {
if (isSubmitType()) {
// Answer a new form based on the values of this form
DataForm dataFormToSend = new DataForm(getType());
dataFormToSend.setInstructions(getInstructions());
dataFormToSend.setTitle(getTitle());
// Remove all the fields that have no answer
for(Iterator it=getFields();it.hasNext();) {
FormField field = (FormField)it.next();
if (field.getValues().hasNext()) {
dataFormToSend.addField(field);
}
}
return dataFormToSend;
}
return dataForm;
}
@ -274,8 +322,16 @@ public class Form {
}
/**
* Returns a new Form to submit the completed values. The new Form will include the hidden
* fields of the original form.
* 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.
*/
@ -285,16 +341,22 @@ public class Form {
}
// Create a new Form
Form form = new Form(TYPE_SUBMIT);
// Copy the hidden fields to the new form
for (Iterator fields=getFields(); fields.hasNext();) {
FormField field = (FormField)fields.next();
if (FormField.TYPE_HIDDEN.equals(field.getType())) {
// Since a hidden field could have many values we need to collect them in a list
List values = new ArrayList();
for (Iterator it=field.getValues();it.hasNext();) {
values.add((String)it.next());
}
form.addAnswer(field.getVariable(), values);
// 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) {
form.addField(new FormField(field.getVariable()));
// 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 values = new ArrayList();
for (Iterator it=field.getValues();it.hasNext();) {
values.add((String)it.next());
}
form.setAnswer(field.getVariable(), values);
}
}
}
return form;