001/** 002 * 003 * Copyright 2014 Anno van Vliet 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smackx.xdatalayout.provider; 018 019import java.io.IOException; 020import java.util.List; 021 022import org.jivesoftware.smackx.xdatalayout.packet.DataLayout; 023import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.DataFormLayoutElement; 024import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.Fieldref; 025import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.Reportedref; 026import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.Section; 027import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.Text; 028import org.xmlpull.v1.XmlPullParser; 029import org.xmlpull.v1.XmlPullParserException; 030 031/** 032 * Extension Provider for Page layout of forms. 033 * 034 * @author Anno van Vliet 035 * 036 */ 037public class DataLayoutProvider { 038 039 public static DataLayout parse(XmlPullParser parser) throws XmlPullParserException, IOException { 040 DataLayout dataLayout = new DataLayout(parser.getAttributeValue("", "label")); 041 parseLayout(dataLayout.getPageLayout(), parser); 042 return dataLayout; 043 } 044 045 private static Section parseSection(XmlPullParser parser) throws XmlPullParserException, IOException { 046 Section layout = new Section(parser.getAttributeValue("", "label")); 047 parseLayout(layout.getSectionLayout(), parser); 048 return layout; 049 } 050 051 private static void parseLayout(List<DataFormLayoutElement> layout, XmlPullParser parser) throws XmlPullParserException, IOException { 052 final int initialDepth = parser.getDepth(); 053 outerloop: while (true) { 054 int eventType = parser.next(); 055 switch (eventType) { 056 case XmlPullParser.START_TAG: 057 switch (parser.getName()) { 058 case Text.ELEMENT: 059 layout.add(new Text(parser.nextText())); 060 break; 061 case Section.ELEMENT: 062 layout.add(parseSection(parser)); 063 break; 064 case Fieldref.ELEMENT: 065 layout.add(parseFieldref(parser)); 066 break; 067 case Reportedref.ELEMENT: 068 layout.add(new Reportedref()); 069 break; 070 default: 071 break; 072 } 073 break; 074 case XmlPullParser.END_TAG: 075 if (parser.getDepth() == initialDepth) { 076 break outerloop; 077 } 078 break; 079 } 080 } 081 } 082 083 private static Fieldref parseFieldref(XmlPullParser parser) throws XmlPullParserException, IOException { 084 final int initialDepth = parser.getDepth(); 085 Fieldref fieldref = new Fieldref(parser.getAttributeValue("", "var")); 086 outerloop: while (true) { 087 int eventType = parser.next(); 088 if (eventType == XmlPullParser.END_TAG && parser.getDepth() == initialDepth) { 089 break outerloop; 090 } 091 } 092 return fieldref; 093 } 094 095}