Class TableView
- java.lang.Object
-
- javax.swing.text.View
-
- javax.swing.text.CompositeView
-
- javax.swing.text.BoxView
-
- javax.swing.text.TableView
- All Implemented Interfaces:
SwingConstants
public abstract class TableView extends BoxView
Implements View interface for a table, that is composed of an element structure where the child elements of the element this view is responsible for represent rows and the child elements of the row elements are cells. The cell elements can have an arbitrary element structure under them, which will be built with the ViewFactory returned by the getViewFactory method.
TABLE ROW CELL CELL ROW CELL CELL
This is implemented as a hierarchy of boxes, the table itself is a vertical box, the rows are horizontal boxes, and the cells are vertical boxes. The cells are allowed to span multiple columns and rows. By default, the table can be thought of as being formed over a grid (i.e. somewhat like one would find in gridbag layout), where table cells can request to span more than one grid cell. The default horizontal span of table cells will be based upon this grid, but can be changed by reimplementing the requested span of the cell (i.e. table cells can have independent spans if desired).
- See Also:
View
Nested Class Summary
Modifier and Type | Class | Description |
---|---|---|
class | TableView.TableCell | Deprecated. A table cell can now be any View implementation. |
class | TableView.TableRow | View of a row in a row-centric table. |
Field Summary
Fields declared in class javax.swing.text.View
BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS
Fields declared in interface javax.swing.SwingConstants
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
Constructor Summary
Constructor | Description |
---|---|
TableView(Element elem) | Constructs a TableView for the given element. |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
protected SizeRequirements | calculateMinorAxisRequirements(int axis,
SizeRequirements r) | Calculate the requirements for the minor axis. |
protected TableView.TableCell | createTableCell(Element elem) | Deprecated. Table cells can now be any arbitrary View implementation and should be produced by the ViewFactory rather than the table. |
protected TableView.TableRow | createTableRow(Element elem) | Creates a new table row. |
protected View | getViewAtPosition(int pos,
Rectangle a) | Fetches the child view that represents the given position in the model. |
protected void | layoutColumns(int targetSpan,
int[] offsets,
int[] spans,
SizeRequirements[] reqs) | Lays out the columns to fit within the given target span. |
protected void | layoutMinorAxis(int targetSpan,
int axis,
int[] offsets,
int[] spans) | Perform layout for the minor axis of the box (i.e. the axis orthogonal to the axis that it represents). |
void | replace(int offset,
int length,
View[] views) | Change the child views. |
Methods declared in class javax.swing.text.BoxView
baselineLayout, baselineRequirements, calculateMajorAxisRequirements, childAllocation, flipEastAndWestAtEnds, forwardUpdate, getAlignment, getAxis, getChildAllocation, getHeight, getMaximumSpan, getMinimumSpan, getOffset, getPreferredSpan, getResizeWeight, getSpan, getViewAtPoint, getWidth, isAfter, isAllocationValid, isBefore, isLayoutValid, layout, layoutChanged, layoutMajorAxis, modelToView, paint, paintChild, preferenceChanged, setAxis, setSize, viewToModel
Methods declared in class javax.swing.text.CompositeView
getBottomInset, getInsideAllocation, getLeftInset, getNextEastWestVisualPositionFrom, getNextNorthSouthVisualPositionFrom, getNextVisualPositionFrom, getRightInset, getTopInset, getView, getViewCount, getViewIndex, getViewIndexAtPosition, loadChildren, modelToView, setInsets, setParagraphInsets, setParent
Methods declared in class javax.swing.text.View
append, breakView, changedUpdate, createFragment, forwardUpdateToView, getAttributes, getBreakWeight, getContainer, getDocument, getElement, getEndOffset, getGraphics, getParent, getStartOffset, getToolTipText, getViewFactory, getViewIndex, insert, insertUpdate, isVisible, modelToView, remove, removeAll, removeUpdate, updateChildren, updateLayout, viewToModel
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
TableView
public TableView(Element elem)
Constructs a TableView for the given element.
- Parameters:
-
elem
- the element that this view is responsible for
Method Detail
createTableRow
protected TableView.TableRow createTableRow(Element elem)
Creates a new table row.
- Parameters:
-
elem
- an element - Returns:
- the row
createTableCell
@Deprecated protected TableView.TableCell createTableCell(Element elem)
- Parameters:
-
elem
- an element - Returns:
- the cell
replace
public void replace(int offset, int length, View[] views)
Change the child views. This is implemented to provide the superclass behavior and invalidate the grid so that rows and columns will be recalculated.
- Overrides:
-
replace
in classBoxView
- Parameters:
-
offset
- the starting index into the child views to insert the new views; this should be a value >= 0 and <= getViewCount -
length
- the number of existing child views to remove; This should be a value >= 0 and <= (getViewCount() - offset) -
views
- the child views to add; this value can benull
to indicate no children are being added (useful to remove)
layoutColumns
protected void layoutColumns(int targetSpan, int[] offsets, int[] spans, SizeRequirements[] reqs)
Lays out the columns to fit within the given target span. Returns the results through offsets
and spans
.
- Parameters:
-
targetSpan
- the given span for total of all the table columns -
reqs
- the requirements desired for each column. This is the column maximum of the cells minimum, preferred, and maximum requested span -
spans
- the return value of how much to allocated to each column -
offsets
- the return value of the offset from the origin for each column
layoutMinorAxis
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans)
Perform layout for the minor axis of the box (i.e. the axis orthogonal to the axis that it represents). The results of the layout should be placed in the given arrays which represent the allocations to the children along the minor axis. This is called by the superclass whenever the layout needs to be updated along the minor axis.
This is implemented to call the layoutColumns
method, and then forward to the superclass to actually carry out the layout of the tables rows.
- Overrides:
-
layoutMinorAxis
in classBoxView
- Parameters:
-
targetSpan
- the total span given to the view, which would be used to layout the children. -
axis
- the axis being layed out. -
offsets
- the offsets from the origin of the view for each of the child views. This is a return value and is filled in by the implementation of this method. -
spans
- the span of each child view. This is a return value and is filled in by the implementation of this method.
calculateMinorAxisRequirements
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r)
Calculate the requirements for the minor axis. This is called by the superclass whenever the requirements need to be updated (i.e. a preferenceChanged was messaged through this view).
This is implemented to calculate the requirements as the sum of the requirements of the columns.
- Overrides:
-
calculateMinorAxisRequirements
in classBoxView
- Parameters:
-
axis
- the axis being studied -
r
- theSizeRequirements
object; ifnull
one will be created - Returns:
- the newly initialized
SizeRequirements
object - See Also:
SizeRequirements
getViewAtPosition
protected View getViewAtPosition(int pos, Rectangle a)
Fetches the child view that represents the given position in the model. This is implemented to walk through the children looking for a range that contains the given position. In this view the children do not necessarily have a one to one mapping with the child elements.
- Overrides:
-
getViewAtPosition
in classCompositeView
- Parameters:
-
pos
- the search position >= 0 -
a
- the allocation to the table on entry, and the allocation of the view containing the position on exit - Returns:
- the view representing the given position, or
null
if there isn't one