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xdata: add more helper methods to DataForm

This commit is contained in:
Florian Schmaus 2020-04-18 19:01:25 +02:00
parent 8e1003723e
commit e58e6fa75d

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@ -20,6 +20,7 @@ package org.jivesoftware.smackx.xdata.packet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
@ -303,6 +304,20 @@ public class DataForm implements ExtensionElement {
return Collections.unmodifiableList(extensionElements);
}
/**
* Return the form type from the hidden form type field.
*
* @return the form type or <code>null</code> if this form has none set.
* @since 4.4.0
*/
public String getFormType() {
FormField formTypeField = getHiddenFormTypeField();
if (formTypeField == null) {
return null;
}
return formTypeField.getFirstValue();
}
/**
* Returns the hidden FORM_TYPE field or null if this data form has none.
*
@ -364,6 +379,56 @@ public class DataForm implements ExtensionElement {
return stanzaView.getExtension(DataForm.class);
}
/**
* Get the data form with the given form type from a stanza view.
*
* @param stanzaView the stanza view to retrieve the data form from
* @param formType the form type
* @return the retrieved data form or <code>null</code> if there is no matching one
* @since 4.4.0
*/
public static DataForm from(StanzaView stanzaView, String formType) {
List<DataForm> dataForms = stanzaView.getExtensions(DataForm.class);
return from(dataForms, formType);
}
/**
* Return the first matching data form with the given form type from the given collection of data forms.
*
* @param dataForms the collection of data forms
* @param formType the form type to match for
* @return the first matching data form or <code>null</code> if there is none
* @since 4.4.0
*/
public static DataForm from(Collection<DataForm> dataForms, String formType) {
for (DataForm dataForm : dataForms) {
if (formType.equals(dataForm.getFormType())) {
return dataForm;
}
}
return null;
}
/**
* Remove the first matching data form with the given form type from the given collection.
*
* @param dataForms the collection of data forms
* @param formType the form type to match for
* @return the removed data form or <code>null</code> if there was none removed
* @since 4.4.0
*/
public static DataForm remove(Collection<DataForm> dataForms, String formType) {
Iterator<DataForm> it = dataForms.iterator();
while (it.hasNext()) {
DataForm dataForm = it.next();
if (formType.equals(dataForm.getFormType())) {
it.remove();
return dataForm;
}
}
return null;
}
/**
*
* Represents the fields that will be returned from a search. This information is useful when