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Checkstyle.
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Doublestrike
@@ -12,178 +12,161 @@ import javax.swing.SwingUtilities;
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/**
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/**
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* FlowLayout subclass that fully supports wrapping of components.
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* FlowLayout subclass that fully supports wrapping of components.
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*/
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*/
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public class WrapLayout extends FlowLayout
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@SuppressWarnings("serial")
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{
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public class WrapLayout extends FlowLayout {
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private Dimension preferredLayoutSize;
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/**
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* Constructs a new <code>WrapLayout</code> with a left
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* alignment and a default 5-unit horizontal and vertical gap.
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*/
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public WrapLayout() {
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super();
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}
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/**
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/**
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* Constructs a new <code>WrapLayout</code> with a left
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* Constructs a new <code>FlowLayout</code> with the specified
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* alignment and a default 5-unit horizontal and vertical gap.
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* alignment and a default 5-unit horizontal and vertical gap.
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*/
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* The value of the alignment argument must be one of
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public WrapLayout()
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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{
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* or <code>WrapLayout</code>.
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super();
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* @param align the alignment value
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}
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*/
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public WrapLayout(int align) {
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super(align);
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}
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/**
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/**
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* Constructs a new <code>FlowLayout</code> with the specified
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* Creates a new flow layout manager with the indicated alignment
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* alignment and a default 5-unit horizontal and vertical gap.
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* and the indicated horizontal and vertical gaps.
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* The value of the alignment argument must be one of
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* <p>
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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* The value of the alignment argument must be one of
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* or <code>WrapLayout</code>.
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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* @param align the alignment value
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* or <code>WrapLayout</code>.
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*/
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* @param align the alignment value
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public WrapLayout(int align)
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* @param hgap the horizontal gap between components
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{
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* @param vgap the vertical gap between components
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super(align);
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*/
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}
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public WrapLayout(int align, int hgap, int vgap) {
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super(align, hgap, vgap);
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}
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/**
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/**
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* Creates a new flow layout manager with the indicated alignment
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* Returns the preferred dimensions for this layout given the
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* and the indicated horizontal and vertical gaps.
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* <i>visible</i> components in the specified target container.
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* <p>
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* @param target the component which needs to be laid out
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* The value of the alignment argument must be one of
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* @return the preferred dimensions to lay out the
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* <code>WrapLayout</code>, <code>WrapLayout</code>,
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* subcomponents of the specified container
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* or <code>WrapLayout</code>.
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*/
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* @param align the alignment value
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@Override
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* @param hgap the horizontal gap between components
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public Dimension preferredLayoutSize(Container target) {
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* @param vgap the vertical gap between components
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return layoutSize(target, true);
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*/
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}
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public WrapLayout(int align, int hgap, int vgap)
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{
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super(align, hgap, vgap);
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}
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/**
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/**
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* Returns the preferred dimensions for this layout given the
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* Returns the minimum dimensions needed to layout the <i>visible</i>
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* <i>visible</i> components in the specified target container.
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* components contained in the specified target container.
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* @param target the component which needs to be laid out
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* @param target the component which needs to be laid out
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* @return the preferred dimensions to lay out the
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* @return the minimum dimensions to lay out the
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* subcomponents of the specified container
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* subcomponents of the specified container
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*/
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*/
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@Override
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@Override
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public Dimension preferredLayoutSize(Container target)
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public Dimension minimumLayoutSize(Container target) {
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{
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Dimension minimum = layoutSize(target, false);
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return layoutSize(target, true);
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minimum.width -= (getHgap() + 1);
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}
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return minimum;
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}
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/**
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/**
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* Returns the minimum dimensions needed to layout the <i>visible</i>
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* Returns the minimum or preferred dimension needed to layout the target
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* components contained in the specified target container.
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* container.
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* @param target the component which needs to be laid out
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*
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* @return the minimum dimensions to lay out the
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* @param target target to get layout size for
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* subcomponents of the specified container
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* @param preferred should preferred size be calculated
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*/
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* @return the dimension to layout the target container
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@Override
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*/
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public Dimension minimumLayoutSize(Container target)
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private Dimension layoutSize(Container target, boolean preferred) {
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{
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synchronized (target.getTreeLock()) {
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Dimension minimum = layoutSize(target, false);
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// Each row must fit with the width allocated to the containter.
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minimum.width -= (getHgap() + 1);
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// When the container width = 0, the preferred width of the container
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return minimum;
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// has not yet been calculated so lets ask for the maximum.
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}
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/**
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int targetWidth = target.getSize().width;
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* Returns the minimum or preferred dimension needed to layout the target
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* container.
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*
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* @param target target to get layout size for
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* @param preferred should preferred size be calculated
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* @return the dimension to layout the target container
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*/
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private Dimension layoutSize(Container target, boolean preferred)
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{
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synchronized (target.getTreeLock())
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{
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// Each row must fit with the width allocated to the containter.
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// When the container width = 0, the preferred width of the container
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// has not yet been calculated so lets ask for the maximum.
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int targetWidth = target.getSize().width;
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if (targetWidth == 0) {
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targetWidth = Integer.MAX_VALUE;
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}
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if (targetWidth == 0)
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int hgap = getHgap();
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targetWidth = Integer.MAX_VALUE;
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int vgap = getVgap();
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Insets insets = target.getInsets();
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int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
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int maxWidth = targetWidth - horizontalInsetsAndGap;
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int hgap = getHgap();
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// Fit components into the allowed width
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int vgap = getVgap();
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Insets insets = target.getInsets();
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int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
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int maxWidth = targetWidth - horizontalInsetsAndGap;
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// Fit components into the allowed width
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Dimension dim = new Dimension(0, 0);
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int rowWidth = 0;
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int rowHeight = 0;
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Dimension dim = new Dimension(0, 0);
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int nmembers = target.getComponentCount();
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int rowWidth = 0;
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int rowHeight = 0;
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int nmembers = target.getComponentCount();
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for (int i = 0; i < nmembers; i++) {
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Component m = target.getComponent(i);
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for (int i = 0; i < nmembers; i++)
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if (m.isVisible()) {
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{
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Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();
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Component m = target.getComponent(i);
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if (m.isVisible())
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// Can't add the component to current row. Start a new row.
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{
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if (rowWidth + d.width > maxWidth) {
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Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();
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addRow(dim, rowWidth, rowHeight);
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rowWidth = 0;
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rowHeight = 0;
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}
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// Can't add the component to current row. Start a new row.
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// Add a horizontal gap for all components after the first
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if (rowWidth != 0) {
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rowWidth += hgap;
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}
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if (rowWidth + d.width > maxWidth)
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rowWidth += d.width;
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{
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rowHeight = Math.max(rowHeight, d.height);
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addRow(dim, rowWidth, rowHeight);
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}
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rowWidth = 0;
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}
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rowHeight = 0;
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}
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// Add a horizontal gap for all components after the first
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addRow(dim, rowWidth, rowHeight);
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if (rowWidth != 0)
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dim.width += horizontalInsetsAndGap;
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{
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dim.height += insets.top + insets.bottom + vgap * 2;
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rowWidth += hgap;
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}
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rowWidth += d.width;
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//When using a scroll pane or the DecoratedLookAndFeel we need to
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rowHeight = Math.max(rowHeight, d.height);
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// make sure the preferred size is less than the size of the
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}
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// target containter so shrinking the container size works
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}
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// correctly. Removing the horizontal gap is an easy way to do this.
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addRow(dim, rowWidth, rowHeight);
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Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane.class, target);
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dim.width += horizontalInsetsAndGap;
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if (scrollPane != null) {
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dim.height += insets.top + insets.bottom + vgap * 2;
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dim.width -= (hgap + 1);
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}
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// When using a scroll pane or the DecoratedLookAndFeel we need to
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return dim;
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// make sure the preferred size is less than the size of the
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}
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// target containter so shrinking the container size works
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}
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// correctly. Removing the horizontal gap is an easy way to do this.
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/*
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Container scrollPane = SwingUtilities.getAncestorOfClass(JScrollPane.class, target);
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* A new row has been completed. Use the dimensions of this row
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* to update the preferred size for the container.
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if (scrollPane != null)
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*
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{
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* @param dim update the width and height when appropriate
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dim.width -= (hgap + 1);
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* @param rowWidth the width of the row to add
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}
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* @param rowHeight the height of the row to add
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*/
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return dim;
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private void addRow(Dimension dim, int rowWidth, int rowHeight) {
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}
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dim.width = Math.max(dim.width, rowWidth);
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}
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if (dim.height > 0) {
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/*
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dim.height += getVgap();
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* A new row has been completed. Use the dimensions of this row
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}
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* to update the preferred size for the container.
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*
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dim.height += rowHeight;
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* @param dim update the width and height when appropriate
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}
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* @param rowWidth the width of the row to add
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* @param rowHeight the height of the row to add
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*/
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private void addRow(Dimension dim, int rowWidth, int rowHeight)
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{
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dim.width = Math.max(dim.width, rowWidth);
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if (dim.height > 0)
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{
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dim.height += getVgap();
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}
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dim.height += rowHeight;
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}
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}
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}
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