Element (Java SE 15 & JDK 15) (original) (raw)

All Known Implementing Classes:

[AbstractDocument.AbstractElement](AbstractDocument.AbstractElement.html "class in javax.swing.text"), [AbstractDocument.BranchElement](AbstractDocument.BranchElement.html "class in javax.swing.text"), [AbstractDocument.LeafElement](AbstractDocument.LeafElement.html "class in javax.swing.text"), [DefaultStyledDocument.SectionElement](DefaultStyledDocument.SectionElement.html "class in javax.swing.text"), [HTMLDocument.BlockElement](html/HTMLDocument.BlockElement.html "class in javax.swing.text.html"), [HTMLDocument.RunElement](html/HTMLDocument.RunElement.html "class in javax.swing.text.html")

public interface Element

Interface to describe a structural piece of a document. It is intended to capture the spirit of an SGML element.

• Method Summary

• Method Details

  • getDocument

  Fetches the document associated with this element.
  Returns:
  the document

  • getParentElement

  Fetches the parent element. If the element is a root level element returns null.
  Returns:
  the parent element

  • getName

  Fetches the name of the element. If the element is used to represent some type of structure, this would be the type name.
  Returns:
  the element name

  • getAttributes

  Fetches the collection of attributes this element contains.
  Returns:
  the attributes for the element

  • getStartOffset

  int getStartOffset()
  Fetches the offset from the beginning of the document that this element begins at. If this element has children, this will be the offset of the first child. As a document position, there is an implied forward bias.
  Returns:
  the starting offset >= 0 and < getEndOffset();
  See Also:
  Document, AbstractDocument

  • getEndOffset

  int getEndOffset()
  Fetches the offset from the beginning of the document that this element ends at. If this element has children, this will be the end offset of the last child. As a document position, there is an implied backward bias.
  All the default Document implementations descend from AbstractDocument.AbstractDocument models an implied break at the end of the document. As a result of this, it is possible for this to return a value greater than the length of the document.
  Returns:
  the ending offset > getStartOffset() and <= getDocument().getLength() + 1
  See Also:
  Document, AbstractDocument

  • getElementIndex

  int getElementIndex​(int offset)
  Gets the child element index closest to the given offset. The offset is specified relative to the beginning of the document. Returns -1 if theElement is a leaf, otherwise returns the index of the Element that best represents the given location. Returns 0 if the location is less than the start offset. ReturnsgetElementCount() - 1 if the location is greater than or equal to the end offset.
  Parameters:
  offset - the specified offset >= 0
  Returns:
  the element index >= 0

  • getElementCount

  int getElementCount()
  Gets the number of child elements contained by this element. If this element is a leaf, a count of zero is returned.
  Returns:
  the number of child elements >= 0

  • getElement

  Element getElement​(int index)
  Fetches the child element at the given index.
  Parameters:
  index - the specified index >= 0
  Returns:
  the child element

  • isLeaf

  boolean isLeaf()
  Is this element a leaf element? An element that_may_ have children, even if it currently has no children, would return false.
  Returns:
  true if a leaf element else false