Class BasicSplitPaneUI.BasicHorizontalLayoutManager

java.lang.Object
javax.swing.plaf.basic.BasicSplitPaneUI.BasicHorizontalLayoutManager
All Implemented Interfaces:
LayoutManager, LayoutManager2
Direct Known Subclasses:
BasicSplitPaneUI.BasicVerticalLayoutManager
Enclosing class:
BasicSplitPaneUI
public class BasicSplitPaneUI.BasicHorizontalLayoutManager extends Object implements LayoutManager2
LayoutManager for JSplitPanes that have an orientation of HORIZONTAL_SPLIT.

Field Summary

Modifier and Type Field Description
protected Component[] components
The components.
protected int[] sizes
The size of components.

Method Summary

Modifier and Type Method Description
void addLayoutComponent(Component comp, Object constraints)
Adds the specified component to the layout, using the specified constraint object.
void addLayoutComponent(String place, Component component)
Adds the component at place.
protected int getAvailableSize(Dimension containerSize, Insets insets)
Returns the available width based on the container size and Insets.
protected int getInitialLocation(Insets insets)
Returns the left inset, unless the Insets are null in which case 0 is returned.
float getLayoutAlignmentX(Container target)
Returns the alignment along the x axis.
float getLayoutAlignmentY(Container target)
Returns the alignment along the y axis.
protected int getPreferredSizeOfComponent(Component c)
Returns the width of the passed in Components preferred size.
protected int getSizeOfComponent(Component c)
Returns the width of the passed in component.
protected int[] getSizes()
Returns the sizes of the components.
void invalidateLayout(Container c)
Does nothing.
void layoutContainer(Container container)
Does the actual layout.
Dimension maximumLayoutSize(Container target)
Returns the maximum layout size, which is Integer.MAX_VALUE in both directions.
Dimension minimumLayoutSize(Container container)
Returns the minimum size needed to contain the children.
Dimension preferredLayoutSize(Container container)
Returns the preferred size needed to contain the children.
void removeLayoutComponent(Component component)
Removes the specified component from our knowledge.
protected void resetSizeAt(int index)
Resets the size of the Component at the passed in location.
void resetToPreferredSizes()
Marks the receiver so that the next time this instance is laid out it'll ask for the preferred sizes.
protected void setComponentToSize(Component c, int size, int location, Insets insets, Dimension containerSize)
Sets the width of the component c to be size, placing its x location at location, y to the insets.top and height to the containerSize.height less the top and bottom insets.
protected void setSizes(int[] newSizes)
Sets the sizes to newSizes.
protected void updateComponents()
Determines the components.

Methods declared in class java.lang.Object

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

Field Details

sizes

protected int[] sizes
The size of components.

components

protected Component[] components
The components.

Method Details

layoutContainer

public void layoutContainer(Container container)
Does the actual layout.
Specified by:
layoutContainer in interface LayoutManager
Parameters:
container - the container to be laid out

addLayoutComponent

public void addLayoutComponent(String place, Component component)
Adds the component at place. Place must be one of JSplitPane.LEFT, RIGHT, TOP, BOTTOM, or null (for the divider).
Specified by:
addLayoutComponent in interface LayoutManager
Parameters:
place - the string to be associated with the component
component - the component to be added

minimumLayoutSize

public Dimension minimumLayoutSize(Container container)
Returns the minimum size needed to contain the children. The width is the sum of all the children's min widths and the height is the largest of the children's minimum heights.
Specified by:
minimumLayoutSize in interface LayoutManager
Parameters:
container - the component to be laid out
Returns:
the minimum dimension for the container
See Also:

preferredLayoutSize

public Dimension preferredLayoutSize(Container container)
Returns the preferred size needed to contain the children. The width is the sum of all the preferred widths of the children and the height is the largest preferred height of the children.
Specified by:
preferredLayoutSize in interface LayoutManager
Parameters:
container - the container to be laid out
Returns:
the preferred dimension for the container
See Also:

removeLayoutComponent

public void removeLayoutComponent(Component component)
Removes the specified component from our knowledge.
Specified by:
removeLayoutComponent in interface LayoutManager
Parameters:
component - the component to be removed

addLayoutComponent

public void addLayoutComponent(Component comp, Object constraints)
Adds the specified component to the layout, using the specified constraint object.
Specified by:
addLayoutComponent in interface LayoutManager2
Parameters:
comp - the component to be added
constraints - where/how the component is added to the layout.

getLayoutAlignmentX

public float getLayoutAlignmentX(Container target)
Returns the alignment along the x axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
Specified by:
getLayoutAlignmentX in interface LayoutManager2
Parameters:
target - the target container
Returns:
the x-axis alignment preference

getLayoutAlignmentY

public float getLayoutAlignmentY(Container target)
Returns the alignment along the y axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.
Specified by:
getLayoutAlignmentY in interface LayoutManager2
Parameters:
target - the target container
Returns:
the y-axis alignment preference

invalidateLayout

public void invalidateLayout(Container c)
Does nothing. If the developer really wants to change the size of one of the views JSplitPane.resetToPreferredSizes should be messaged.
Specified by:
invalidateLayout in interface LayoutManager2
Parameters:
c - the target container

maximumLayoutSize

public Dimension maximumLayoutSize(Container target)
Returns the maximum layout size, which is Integer.MAX_VALUE in both directions.
Specified by:
maximumLayoutSize in interface LayoutManager2
Parameters:
target - the target container
Returns:
the maximum size of the container
See Also:

resetToPreferredSizes

public void resetToPreferredSizes()
Marks the receiver so that the next time this instance is laid out it'll ask for the preferred sizes.

resetSizeAt

protected void resetSizeAt(int index)
Resets the size of the Component at the passed in location.
Parameters:
index - the index of a component

setSizes

protected void setSizes(int[] newSizes)
Sets the sizes to newSizes.
Parameters:
newSizes - the new sizes

getSizes

protected int[] getSizes()
Returns the sizes of the components.
Returns:
the sizes of the components

getPreferredSizeOfComponent

protected int getPreferredSizeOfComponent(Component c)
Returns the width of the passed in Components preferred size.
Parameters:
c - a component
Returns:
the preferred width of the component

getSizeOfComponent

protected int getSizeOfComponent(Component c)
Returns the width of the passed in component.
Parameters:
c - a component
Returns:
the width of the component

getAvailableSize

protected int getAvailableSize(Dimension containerSize, Insets insets)
Returns the available width based on the container size and Insets.
Parameters:
containerSize - a container size
insets - an insets
Returns:
the available width

getInitialLocation

protected int getInitialLocation(Insets insets)
Returns the left inset, unless the Insets are null in which case 0 is returned.
Parameters:
insets - the insets
Returns:
the left inset

setComponentToSize

protected void setComponentToSize(Component c, int size, int location, Insets insets, Dimension containerSize)
Sets the width of the component c to be size, placing its x location at location, y to the insets.top and height to the containerSize.height less the top and bottom insets.
Parameters:
c - a component
size - a new width
location - a new X coordinate
insets - an insets
containerSize - a container size

updateComponents

protected void updateComponents()
Determines the components. This should be called whenever a new instance of this is installed into an existing SplitPane.

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https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/swing/plaf/basic/BasicSplitPaneUI.BasicHorizontalLayoutManager.html