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Java Platform 1.2 Beta 4 |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.awt.FlowLayout
For example, the following picture shows an applet using the flow layout manager (its default layout manager) to position three buttons:
Here is the code for this applet:
import java.awt.*; import java.applet.Applet; public class myButtons extends Applet { Button button1, button2, button3; public void init() { button1 = new Button("Ok"); button2 = new Button("Open"); button3 = new Button("Close"); add(button1); add(button2); add(button3); } }
A flow layout lets each component assume its natural (preferred) size.
Field Summary | |
static int | CENTER
This value indicates that each row of components should be centered. |
static int | LEADING
This value indicates that each row of components should be justified to the leading edge of the container's orientation, e.g. to the left in left-to-right orientations. |
static int | LEFT
This value indicates that each row of components should be left-justified. |
static int | RIGHT
This value indicates that each row of components should be right-justified. |
static int | TRAILING
This value indicates that each row of components should be justified to the leading edge of the container's orientation, e.g. to the right in left-to-right orientations. |
Constructor Summary | |
FlowLayout()
Constructs a new Flow Layout with a centered alignment and a default 5-unit horizontal and vertical gap. |
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FlowLayout(int align,
int hgap,
int vgap)
Creates a new flow layout manager with the indicated alignment and the indicated horizontal and vertical gaps. |
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FlowLayout(int align)
Constructs a new Flow Layout with the specified alignment and a default 5-unit horizontal and vertical gap. |
Method Summary | |
void | addLayoutComponent(String name,
Component comp)
Adds the specified component to the layout. |
int | getAlignment()
Gets the alignment for this layout. |
int | getHgap()
Gets the horizontal gap between components. |
int | getVgap()
Gets the vertical gap between components. |
void | layoutContainer(Container target)
Lays out the container. |
Dimension | minimumLayoutSize(Container target)
Returns the minimum dimensions needed to layout the components contained in the specified target container. |
Dimension | preferredLayoutSize(Container target)
Returns the preferred dimensions for this layout given the components in the specified target container. |
void | removeLayoutComponent(Component comp)
Removes the specified component from the layout. |
void | setAlignment(int align)
Sets the alignment for this layout. |
void | setHgap(int hgap)
Sets the horizontal gap between components. |
void | setVgap(int vgap)
Sets the vertical gap between components. |
String | toString()
Returns a string representation of this FlowLayout
object and its values. |
Methods inherited from class java.lang.Object | |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait |
Field Detail |
public static final int LEFT
public static final int CENTER
public static final int RIGHT
public static final int LEADING
Component.getComponentOrientation()
,
ComponentOrientation
public static final int TRAILING
Component.getComponentOrientation()
,
ComponentOrientation
Constructor Detail |
public FlowLayout()
public FlowLayout(int align)
FlowLayout.LEFT
, FlowLayout.RIGHT
,
or FlowLayout.CENTER
.
align
- the alignment valuepublic FlowLayout(int align, int hgap, int vgap)
The value of the alignment argument must be one of
FlowLayout.LEFT
, FlowLayout.RIGHT
,
or FlowLayout.CENTER
.
align
- the alignment value.
hgap
- the horizontal gap between components.
vgap
- the vertical gap between components.Method Detail |
public int getAlignment()
FlowLayout.LEFT
,
FlowLayout.RIGHT
, or FlowLayout.CENTER
.public void setAlignment(int align)
FlowLayout.LEFT
,
FlowLayout.RIGHT
, and FlowLayout.CENTER
.
align
- the alignment value.getAlignment()
public int getHgap()
setHgap(int)
public void setHgap(int hgap)
hgap
- the horizontal gap between componentsgetHgap()
public int getVgap()
setVgap(int)
public void setVgap(int vgap)
vgap
- the vertical gap between componentsgetVgap()
public void addLayoutComponent(String name, Component comp)
name
- the name of the component
comp
- the component to be addedpublic void removeLayoutComponent(Component comp)
comp
- the component to removeContainer.removeAll()
public Dimension preferredLayoutSize(Container target)
target
- the component which needs to be laid outContainer
,
minimumLayoutSize(java.awt.Container)
,
Container.getPreferredSize()
public Dimension minimumLayoutSize(Container target)
target
- the component which needs to be laid outpreferredLayoutSize(java.awt.Container)
,
Container
,
Container.doLayout()
public void layoutContainer(Container target)
FlowLayout
object.
target
- the specified component being laid out.Container
,
Container.doLayout()
public String toString()
FlowLayout
object and its values.
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Java Platform 1.2 Beta 4 |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |