com.zfqjava.swing.cell
Class AbstractCellRenderer

java.lang.Object
  com.zfqjava.swing.cell.AbstractCellRenderer

All Implemented Interfaces:

ListCellRenderer, Renderer, TableCellRenderer, TreeCellRenderer

Direct Known Subclasses:

DefaultCellRenderer, ObjectCellRenderer

public abstract class AbstractCellRenderer
extends Object
implements ListCellRenderer, TableCellRenderer, TreeCellRenderer, Renderer

AbstractCellRenderer provides a abstract cell renderer, can renderer JList, JTable, JTree.

Field Summary

protected static Border	noFocusBorder The border used when the cell has no focus.
protected boolean	useFocusColor True use the focus color when the cell has focus.

Constructor Summary

AbstractCellRenderer()

Method Summary

CellProvider	getCellProvider() Returns the cell provider to add extra info for current renderer.
Component	getCellRendererComponent(Container host, Object value, boolean isSelected, boolean cellHasFocus) Return a component that has been configured to display the specified value.
CellRendererComponentType	getCellRendererComponentType()
abstract Component	getComponent() Returns the component for this renderer.
Component	getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) Return a component that has been configured to display the specified value.
Component	getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) Returns the component used for drawing the cell.
Component	getTreeCellRendererComponent(JTree tree, Object value, boolean isSelected, boolean expanded, boolean leaf, int row, boolean hasFocus) Sets the value of the current tree cell to value.
boolean	isOpaque() Returns the opaque property.
void	setCellProvider(CellProvider provider) Sets the cell provider to add extra info for current renderer.
void	setCellRendererComponentType(CellRendererComponentType cellRendererComponentType)
void	setOpaque(boolean opaque) Sets the opaque property.
protected abstract void	setValue(Object value) Sets the value for current renderer.
void	setValue(Object value, boolean isSelected) Sets the value.
void	updateUI() Updates UI.

Methods inherited from class java.lang.Object

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

Field Detail

noFocusBorder

protected static Border noFocusBorder

The border used when the cell has no focus. The default is new EmptyBorder(1, 1, 1, 1).

useFocusColor

protected boolean useFocusColor

True use the focus color when the cell has focus. This is important for TableCellRenderer. The default is true.

Constructor Detail

AbstractCellRenderer

public AbstractCellRenderer()

Method Detail

getCellRendererComponent

public Component getCellRendererComponent(Container host,
                                          Object value,
                                          boolean isSelected,
                                          boolean cellHasFocus)

Return a component that has been configured to display the specified value. That component's paint method is then called to "render" the cell. If it is necessary to compute the dimensions of a list because the list cells do not have a fixed size, this method is called to generate a component on which getPreferredSize can be invoked.

Parameters:

host - the renderer component container

value - the value

isSelected - True if the specified cell was selected

cellHasFocus - True if the specified cell has the focus.

Returns:

the component for render the specified value

Since:

JFlowChart 1.0

getListCellRendererComponent

public Component getListCellRendererComponent(JList list,
                                              Object value,
                                              int index,
                                              boolean isSelected,
                                              boolean cellHasFocus)

Return a component that has been configured to display the specified value. That component's paint method is then called to "render" the cell. If it is necessary to compute the dimensions of a list because the list cells do not have a fixed size, this method is called to generate a component on which getPreferredSize can be invoked.

Specified by:

getListCellRendererComponent in interface ListCellRenderer

Parameters:

list - The JList we're painting.

value - The value returned by list.getModel().getElementAt(index).

index - The cells index.

isSelected - True if the specified cell was selected.

cellHasFocus - True if the specified cell has the focus.

Returns:

A component whose paint() method will render the specified value.

See Also:

JList, ListSelectionModel, ListModel

getTableCellRendererComponent

public Component getTableCellRendererComponent(JTable table,
                                               Object value,
                                               boolean isSelected,
                                               boolean hasFocus,
                                               int row,
                                               int column)

Returns the component used for drawing the cell. This method is used to configure the renderer appropriately before drawing.

Specified by:

getTableCellRendererComponent in interface TableCellRenderer

Parameters:

table - the JTable that is asking the renderer to draw; can be null

value - the value of the cell to be rendered. It is up to the specific renderer to interpret and draw the value. For example, if value is the string "true", it could be rendered as a string or it could be rendered as a check box that is checked. null is a valid value

isSelected - true if the cell is to be rendered with the selection highlighted; otherwise false

hasFocus - if true, render cell appropriately. For example, put a special border on the cell, if the cell can be edited, render in the color used to indicate editing

row - the row index of the cell being drawn. When drawing the header, the value of row is -1

column - the column index of the cell being drawn

getTreeCellRendererComponent

public Component getTreeCellRendererComponent(JTree tree,
                                              Object value,
                                              boolean isSelected,
                                              boolean expanded,
                                              boolean leaf,
                                              int row,
                                              boolean hasFocus)

Sets the value of the current tree cell to value. If selected is true, the cell will be drawn as if selected. If expanded is true the node is currently expanded and if leaf is true the node represets a leaf and if hasFocus is true the node currently has focus. tree is the JTree the receiver is being configured for. Returns the Component that the renderer uses to draw the value.

Specified by:

getTreeCellRendererComponent in interface TreeCellRenderer

Returns:

the Component that the renderer uses to draw the value

updateUI

public void updateUI()

Updates UI.

setOpaque

public void setOpaque(boolean opaque)

Sets the opaque property.

Parameters:

opaque - the opaque property

isOpaque

public boolean isOpaque()

Returns the opaque property.

Returns:

the opaque property

setCellProvider

public void setCellProvider(CellProvider provider)

Sets the cell provider to add extra info for current renderer.

Parameters:

provider - the cell provider

See Also:

getCellProvider()

getCellProvider

public CellProvider getCellProvider()

Returns the cell provider to add extra info for current renderer.

Returns:

the cell provider to add extra info for current renderer

See Also:

setCellProvider(com.zfqjava.swing.cell.CellProvider)

setValue

public void setValue(Object value,
                     boolean isSelected)

Sets the value.

Specified by:

setValue in interface Renderer

Parameters:

value - the value

isSelected - the select state

getComponent

public abstract Component getComponent()

Returns the component for this renderer.

Specified by:

getComponent in interface Renderer

Returns:

the component for this renderer

setValue

protected abstract void setValue(Object value)

Sets the value for current renderer. This method aims to format the object in subclass.

Parameters:

value - the value to renderer

getCellRendererComponentType

public CellRendererComponentType getCellRendererComponentType()

Since:

JComponentPack 1.3

setCellRendererComponentType

public void setCellRendererComponentType(CellRendererComponentType cellRendererComponentType)

Since:

JComponentPack 1.3