javax.swing.text.html
Class AccessibleHTML.TableElementInfo

java.lang.Object
  javax.swing.text.html.AccessibleHTML.ElementInfo
      javax.swing.text.html.AccessibleHTML.TableElementInfo

All Implemented Interfaces:

javax.accessibility.Accessible

Enclosing class:

AccessibleHTML

private class AccessibleHTML.TableElementInfo

extends AccessibleHTML.ElementInfo

implements javax.accessibility.Accessible

TableElementInfo encapsulates information about a HTML.Tag.TABLE. To make access fast it crates a grid containing the children to allow for access by row, column. TableElementInfo will contain TableRowElementInfos, which will contain TableCellElementInfos. Any time one of the rows or columns becomes invalid the table is invalidated. This is because any time one of the child attributes changes the size of the grid may have changed.

Nested Class Summary

class	AccessibleHTML.TableElementInfo.TableAccessibleContext
private class	AccessibleHTML.TableElementInfo.TableCellElementInfo TableCellElementInfo is used to represents the cells of the table.
private class	AccessibleHTML.TableElementInfo.TableRowElementInfo

Field Summary

private javax.accessibility.AccessibleContext	accessibleContext
protected AccessibleHTML.ElementInfo	caption
private AccessibleHTML.TableElementInfo.TableCellElementInfo[][]	grid Allocation of the table by row x column.

Constructor Summary

(package private)

AccessibleHTML.TableElementInfo(Element e, AccessibleHTML.ElementInfo parent)

Method Summary

protected void	addChild(AccessibleHTML.ElementInfo child) Adds a new child to this ElementInfo.
javax.accessibility.AccessibleContext	getAccessibleContext()
protected AttributeSet	getAttributes() Returns the AttributeSet associated with the Element, this will return null if the ElementInfo can't be validated.
Rectangle	getBounds() Returns the Bounds for this ElementInfo, or null if the ElementInfo can't be validated.
AccessibleHTML.ElementInfo	getCaptionInfo()
AccessibleHTML.TableElementInfo.TableCellElementInfo	getCell(int r, int c) Returns the TableCellElementInfo by row and column.
AccessibleHTML.ElementInfo	getChild(int index) Returns the child ElementInfo at index, or null if index isn't a valid index.
int	getChildCount() Returns the number of children the ElementInfo contains.
int	getColumnCount() Returns the number of columns in the table.
int	getColumnExtentAt(int r, int c) Returns the colspan of the specified entry.
Element	getElement() Returns the Element this ElementInfo represents.
int	getIndexInParent() Returns the index of the child in the parent, or -1 for the root or if the parent isn't valid.
protected int	getIntAttr(AttributeSet attrs, Object key, int deflt) Convenience method for getting an integer attribute from the passed in AttributeSet.
AccessibleHTML.ElementInfo	getParent() Returns the parent of this Element, or null for the root.
AccessibleHTML.TableElementInfo.TableRowElementInfo	getRow(int index) Returns the TableCellElementInfo at the specified index.
int	getRowCount() Returns the number of rows in the table.
int	getRowExtentAt(int r, int c) Returns the rowspan of the specified entry.
protected View	getView() Returns the View corresponding to this ElementInfo, or null if the ElementInfo can't be validated.
protected AttributeSet	getViewAttributes() Returns the AttributeSet associated with the View that is representing this Element, this will return null if the ElementInfo can't be validated.
int	indexOf(AccessibleHTML.ElementInfo child) Returns the index of the specified child, or -1 if child isn't a valid child.
protected void	invalidate(boolean first) Invalidates the ElementInfo.
protected boolean	isValid() Returns true if this ElementInfo is valid.
protected void	loadChildren(Element e) Overriden to only alloc instances of TableRowElementInfos.
private void	updateGrid() Updates the grid.
protected void	validate() Overriden to update the grid when validating.
protected boolean	validateIfNecessary() Validates the ElementInfo if necessary.

Methods inherited from class java.lang.Object

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

Field Detail

caption

protected AccessibleHTML.ElementInfo caption

grid

private AccessibleHTML.TableElementInfo.TableCellElementInfo[][] grid

Allocation of the table by row x column. There may be holes (eg nulls) depending upon the html, any cell that has a rowspan/colspan > 1 will be contained multiple times in the grid.

accessibleContext

private javax.accessibility.AccessibleContext accessibleContext

Constructor Detail

AccessibleHTML.TableElementInfo

AccessibleHTML.TableElementInfo(Element e,
                                AccessibleHTML.ElementInfo parent)

Method Detail

getCaptionInfo

public AccessibleHTML.ElementInfo getCaptionInfo()

validate

protected void validate()

Overriden to update the grid when validating.

Overrides:

validate in class AccessibleHTML.ElementInfo

loadChildren

protected void loadChildren(Element e)

Overriden to only alloc instances of TableRowElementInfos.

Overrides:

loadChildren in class AccessibleHTML.ElementInfo

updateGrid

private void updateGrid()

Updates the grid.

getRow

public AccessibleHTML.TableElementInfo.TableRowElementInfo getRow(int index)

Returns the TableCellElementInfo at the specified index.

getCell

public AccessibleHTML.TableElementInfo.TableCellElementInfo getCell(int r,
                                                                    int c)

Returns the TableCellElementInfo by row and column.

getRowExtentAt

public int getRowExtentAt(int r,
                          int c)

Returns the rowspan of the specified entry.

getColumnExtentAt

public int getColumnExtentAt(int r,
                             int c)

Returns the colspan of the specified entry.

getRowCount

public int getRowCount()

Returns the number of rows in the table.

getColumnCount

public int getColumnCount()

Returns the number of columns in the table.

getAccessibleContext

public javax.accessibility.AccessibleContext getAccessibleContext()

Specified by:

getAccessibleContext in interface javax.accessibility.Accessible

getIndexInParent

public int getIndexInParent()

Returns the index of the child in the parent, or -1 for the root or if the parent isn't valid.

getElement

public Element getElement()

Returns the Element this ElementInfo represents.

getParent

public AccessibleHTML.ElementInfo getParent()

Returns the parent of this Element, or null for the root.

indexOf

public int indexOf(AccessibleHTML.ElementInfo child)

Returns the index of the specified child, or -1 if child isn't a valid child.

getChild

public AccessibleHTML.ElementInfo getChild(int index)

Returns the child ElementInfo at index, or null if index isn't a valid index.

getChildCount

public int getChildCount()

Returns the number of children the ElementInfo contains.

addChild

protected void addChild(AccessibleHTML.ElementInfo child)

Adds a new child to this ElementInfo.

getView

protected View getView()

Returns the View corresponding to this ElementInfo, or null if the ElementInfo can't be validated.

getBounds

public Rectangle getBounds()

Returns the Bounds for this ElementInfo, or null if the ElementInfo can't be validated.

isValid

protected boolean isValid()

Returns true if this ElementInfo is valid.

getAttributes

protected AttributeSet getAttributes()

Returns the AttributeSet associated with the Element, this will return null if the ElementInfo can't be validated.

getViewAttributes

protected AttributeSet getViewAttributes()

Returns the AttributeSet associated with the View that is representing this Element, this will return null if the ElementInfo can't be validated.

getIntAttr

protected int getIntAttr(AttributeSet attrs,
                         Object key,
                         int deflt)

Convenience method for getting an integer attribute from the passed in AttributeSet.

validateIfNecessary

protected boolean validateIfNecessary()

Validates the ElementInfo if necessary. Some ElementInfos may never be valid again. You should check isValid before using one. This will reload the children and invoke validate if the ElementInfo is invalid and can become valid again. This will return true if the receiver is valid.

invalidate

protected void invalidate(boolean first)

Invalidates the ElementInfo. Subclasses should override this if they need to reset state once invalid.