org.apache.fop.area

## Class AreaTreeModel

- java.lang.Object
- - org.apache.fop.area.AreaTreeModel

- Direct Known Subclasses:
    RenderPagesModel

      public class AreaTreeModel
      extends Object

  This is the model for the area tree object. The model implementation can handle the page sequence, page and off-document items. The methods to access the page viewports can only assume the PageViewport is valid as it remains for the life of the area tree model.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected PageSequence` | `currentPageSequence` the current page sequence
    `protected static org.apache.commons.logging.Log` | `log` logger instance

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AreaTreeModel()` Create a new store pages model

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addPage(PageViewport page)` Add a page to this model.
    `void` | `endDocument()` Signal the end of the document for any processing.
    `PageSequence` | `getCurrentPageSequence()` Returns the currently active page-sequence.
    `PageViewport` | `getPage(int seq, int count)` Get the page for a position in the document.
    `int` | `getPageCount(int seq)` Get the page count.
    `int` | `getPageSequenceCount()` Get the page sequence count.
    `void` | `handleOffDocumentItem(OffDocumentItem ext)` Handle an OffDocumentItem
    `void` | `setDocumentLocale(Locale locale)`
    `void` | `startPageSequence(PageSequence pageSequence)` Start a page sequence on this model.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### currentPageSequence

          protected PageSequence currentPageSequence

      the current page sequence

    - #### log

          protected static final org.apache.commons.logging.Log log

      logger instance

  - ### Constructor Detail

    - #### AreaTreeModel

          public AreaTreeModel()

      Create a new store pages model

  - ### Method Detail

    - #### startPageSequence

          public void startPageSequence(PageSequence pageSequence)

      Start a page sequence on this model.
      Parameters:
        `pageSequence` - the page sequence about to start

    - #### addPage

          public void addPage(PageViewport page)

      Add a page to this model.
      Parameters:
        `page` - the page to add to the model.

    - #### handleOffDocumentItem

          public void handleOffDocumentItem(OffDocumentItem ext)

      Handle an OffDocumentItem
      Parameters:
        `ext` - the extension to handle

    - #### endDocument

          public void endDocument()
                           throws SAXException

      Signal the end of the document for any processing.
      Throws:
        `SAXException` - if a problem was encountered.

    - #### getCurrentPageSequence

          public PageSequence getCurrentPageSequence()

      Returns the currently active page-sequence.
      Returns:
        the currently active page-sequence

    - #### getPageSequenceCount

          public int getPageSequenceCount()

      Get the page sequence count.
      Returns:
        the number of page sequences in the document.

    - #### getPageCount

          public int getPageCount(int seq)

      Get the page count.
      Parameters:
        `seq` - the page sequence to count.
      Returns:
        returns the number of pages in a page sequence

    - #### getPage

          public PageViewport getPage(int seq,
                                      int count)

      Get the page for a position in the document.
      Parameters:
        `seq` - the page sequence number
        `count` - the page count in the sequence
      Returns:
        the PageViewport for the particular page

    - #### setDocumentLocale

          public void setDocumentLocale(Locale locale)

      Parameters:
        `locale` - The locale of the document

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