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FlowLayout

Name

FlowLayout

[Graphic: Figure from the text]

Description

The FlowLayout LayoutManager provides the means to lay out components in a row by row fashion. As each row fills up, the components continue on the next row.

Class Definition

public class java.awt.FlowLayout
    extends java.lang.Object
    implements java.awt.LayoutManager, java.io.Serializable {
  
  // Constants
  public static final int CENTER;
  public static final int LEFT;
  public static final int RIGHT;
  
  // Constructors
  public FlowLayout();
  public FlowLayout (int alignment);
  public FlowLayout (int alignment, int hgap, int vgap);
  
  // Instance Methods
  public void addLayoutComponent (String name, Component component); 
  public int getAlignment(); (New)
  public int getHgap(); (New)
  public int getVgap(); (New)
  public void layoutContainer (Container target); 
  public Dimension minimumLayoutSize (Container target); 
  public Dimension preferredLayoutSize (Container target); 
  public void removeLayoutComponent (Component component); 
  public void setAlignment (int align); (New)
  public void setHgap (int hgap); (New)
  public void setVgap (int vgap); (New)
  public String toString();
}

Constants

CENTER

public static final int CENTER

The default alignment for a FlowLayout object; rows of components are centered within the container.

LEFT

public static final int LEFT

An alignment for a FlowLayout object; rows of components start on the left side of the container.

RIGHT

public static final int RIGHT

An alignment for a FlowLayout object; rows of components start on the right side of the container.

Constructors

FlowLayout

public FlowLayout()

Description

Constructs a FlowLayout object with CENTER alignment.

public FlowLayout (int alignment)

Parameters

alignment

Alignment of components within the container.

Description

Constructs a FlowLayout object with the given alignment.

public FlowLayout (int alignment, int hgap, int vgap)

Parameters

alignment

Alignment of components within container

hgap

Horizontal space between each component in a row

vgap

Vertical space between each row

Description

Constructs a FlowLayout object with the given alignment and the values specified as the gaps between each component in the container managed by this instance of FlowLayout.

Instance Methods

addLayoutComponent

public void addLayoutComponent (String name, Component component)

Parameters

name

Name of component to add.

component

Actual component being added.

Implements

LayoutManager.addLayoutComponent()

Description

Does nothing.

getAlignment

public int getAlignment() (New)

Returns

The alignment constant for this FlowLayout.

getHgap

public int getHgap() (New)

Returns

The horizontal gap between components.

getVgap

public int getVgap() (New)

Returns

The vertical gap between components.

layoutContainer

public void layoutContainer (Container target)

Parameters

target

The container that needs to be redrawn.

Implements

LayoutManager.layoutContainer()

Description

Draws the components contained within the target container.

minimumLayoutSize

public Dimension minimumLayoutSize (Container target)

Parameters

target

The container whose size needs to be calculated.

Returns

Minimum Dimension of container target

Implements

LayoutManager.minimumLayoutSize()

Description

Calculates minimum size of target container.

preferredLayoutSize

public Dimension preferredLayoutSize (Container target)

Parameters

target

The container whose size needs to be calculated.

Returns

Preferred Dimension of container target

Implements

LayoutManager.preferredLayoutSize()

Description

Calculates preferred size of target container.

removeLayoutComponent

public void removeLayoutComponent (Component component)

Parameters

component

Component to stop tracking.

Implements

LayoutManager.removeLayoutComponent()

Description

Does nothing.

setAlignment

public void setAlignment(int align) (New)

Parameters

alignment

Alignment of components within container

Description

Sets the alignment for the FlowLayout.

setHgap

public void setHgap(int hgap) (New)

Parameters

hgap

The horizontal gap value.

Description

Sets the horizontal gap between components.

setVgap

public void setVgap(int vgap) (New)

Parameters

vgap

The vertical gap value.

Description

Sets the vertical gap between components.

toString

public String toString()

Returns

A string representation of the FlowLayout object.

Overrides

Object.toString()

See Also

Component, Container, Dimension, LayoutManager, Object, Serializable, String


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