http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public class org.apache.fop.area.AreaTreeModel
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.area.AreaTreeModel
  super_class: java.lang.Object
{
  private java.util.List<org.apache.fop.area.PageSequence> pageSequenceList;
    descriptor: Ljava/util/List;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/List<Lorg/apache/fop/area/PageSequence;>;

  private int currentPageIndex;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  protected org.apache.fop.area.PageSequence currentPageSequence;
    descriptor: Lorg/apache/fop/area/PageSequence;
    flags: (0x0004) ACC_PROTECTED

  protected static final org.apache.commons.logging.Log log;
    descriptor: Lorg/apache/commons/logging/Log;
    flags: (0x001c) ACC_PROTECTED, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 46
            ldc Lorg/apache/fop/area/AreaTreeModel;
            invokestatic org.apache.commons.logging.LogFactory.getLog:(Ljava/lang/Class;)Lorg/apache/commons/logging/Log;
            putstatic org.apache.fop.area.AreaTreeModel.log:Lorg/apache/commons/logging/Log;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.area.AreaTreeModel this
         0: .line 51
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 52
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield org.apache.fop.area.AreaTreeModel.pageSequenceList:Ljava/util/List;
         2: .line 53
            return
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/apache/fop/area/AreaTreeModel;

  public void startPageSequence(org.apache.fop.area.PageSequence);
    descriptor: (Lorg/apache/fop/area/PageSequence;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // org.apache.fop.area.PageSequence pageSequence
         0: .line 60
            aload 1 /* pageSequence */
            ifnonnull 2
         1: .line 61
            new java.lang.NullPointerException
            dup
            ldc "pageSequence must not be null"
            invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 63
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            ifnull 4
         3: .line 64
            aload 0 /* this */
            dup
            getfield org.apache.fop.area.AreaTreeModel.currentPageIndex:I
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            invokevirtual org.apache.fop.area.PageSequence.getPageCount:()I
            iadd
            putfield org.apache.fop.area.AreaTreeModel.currentPageIndex:I
         4: .line 66
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* pageSequence */
            putfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
         5: .line 67
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.pageSequenceList:Ljava/util/List;
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
         6: .line 68
            return
        end local 1 // org.apache.fop.area.PageSequence pageSequence
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    7     0          this  Lorg/apache/fop/area/AreaTreeModel;
            0    7     1  pageSequence  Lorg/apache/fop/area/PageSequence;
    MethodParameters:
              Name  Flags
      pageSequence  

  public void addPage(org.apache.fop.area.PageViewport);
    descriptor: (Lorg/apache/fop/area/PageViewport;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // org.apache.fop.area.PageViewport page
         0: .line 75
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            aload 1 /* page */
            invokevirtual org.apache.fop.area.PageSequence.addPage:(Lorg/apache/fop/area/PageViewport;)V
         1: .line 76
            aload 1 /* page */
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageIndex:I
         2: .line 77
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            invokevirtual org.apache.fop.area.PageSequence.getPageCount:()I
            iadd
            iconst_1
            isub
         3: .line 76
            invokevirtual org.apache.fop.area.PageViewport.setPageIndex:(I)V
         4: .line 78
            aload 1 /* page */
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            invokevirtual org.apache.fop.area.PageViewport.setPageSequence:(Lorg/apache/fop/area/PageSequence;)V
         5: .line 79
            return
        end local 1 // org.apache.fop.area.PageViewport page
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/apache/fop/area/AreaTreeModel;
            0    6     1  page  Lorg/apache/fop/area/PageViewport;
    MethodParameters:
      Name  Flags
      page  

  public void handleOffDocumentItem(org.apache.fop.area.OffDocumentItem);
    descriptor: (Lorg/apache/fop/area/OffDocumentItem;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // org.apache.fop.area.OffDocumentItem ext
         0: .line 85
            return
        end local 1 // org.apache.fop.area.OffDocumentItem ext
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeModel;
            0    1     1   ext  Lorg/apache/fop/area/OffDocumentItem;
    MethodParameters:
      Name  Flags
      ext   

  public void endDocument();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=1, args_size=1
        start local 0 // org.apache.fop.area.AreaTreeModel this
         0: .line 91
            return
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeModel;
    Exceptions:
      throws org.xml.sax.SAXException

  public org.apache.fop.area.PageSequence getCurrentPageSequence();
    descriptor: ()Lorg/apache/fop/area/PageSequence;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.AreaTreeModel this
         0: .line 98
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.currentPageSequence:Lorg/apache/fop/area/PageSequence;
            areturn
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeModel;

  public int getPageSequenceCount();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.AreaTreeModel this
         0: .line 106
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.pageSequenceList:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            ireturn
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeModel;

  public int getPageCount(int);
    descriptor: (I)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // int seq
         0: .line 115
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.pageSequenceList:Ljava/util/List;
            iload 1 /* seq */
            iconst_1
            isub
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast org.apache.fop.area.PageSequence
            invokevirtual org.apache.fop.area.PageSequence.getPageCount:()I
            ireturn
        end local 1 // int seq
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/AreaTreeModel;
            0    1     1   seq  I
    MethodParameters:
      Name  Flags
      seq   

  public org.apache.fop.area.PageViewport getPage(int, int);
    descriptor: (II)Lorg/apache/fop/area/PageViewport;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // int seq
        start local 2 // int count
         0: .line 125
            aload 0 /* this */
            getfield org.apache.fop.area.AreaTreeModel.pageSequenceList:Ljava/util/List;
            iload 1 /* seq */
            iconst_1
            isub
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast org.apache.fop.area.PageSequence
            iload 2 /* count */
            invokevirtual org.apache.fop.area.PageSequence.getPage:(I)Lorg/apache/fop/area/PageViewport;
            areturn
        end local 2 // int count
        end local 1 // int seq
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lorg/apache/fop/area/AreaTreeModel;
            0    1     1    seq  I
            0    1     2  count  I
    MethodParameters:
       Name  Flags
      seq    
      count  

  public void setDocumentLocale(java.util.Locale);
    descriptor: (Ljava/util/Locale;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // org.apache.fop.area.AreaTreeModel this
        start local 1 // java.util.Locale locale
         0: .line 133
            return
        end local 1 // java.util.Locale locale
        end local 0 // org.apache.fop.area.AreaTreeModel this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lorg/apache/fop/area/AreaTreeModel;
            0    1     1  locale  Ljava/util/Locale;
    MethodParameters:
        Name  Flags
      locale  
}
SourceFile: "AreaTreeModel.java"