/**
* Returns the component that corresponds to the given constraint location based on the target
* <code>Container</code>'s component orientation. Components added with the relative constraints
* <code>PAGE_START</code>, <code>PAGE_END</code>, <code>LINE_START</code>, and <code>LINE_END
* </code> take precedence over components added with the explicit constraints <code>NORTH</code>,
* <code>SOUTH</code>, <code>WEST</code>, and <code>EAST</code>. The <code>Container</code>'s
* component orientation is used to determine the location of components added with <code>
* LINE_START</code> and <code>LINE_END</code>.
*
* @param constraints the desired absolute position, one of <code>CENTER</code>, <code>NORTH
* </code>, <code>SOUTH</code>, <code>EAST</code>, <code>WEST</code>
* @param target the {@code Container} used to obtain the constraint location based on the target
* {@code Container}'s component orientation.
* @return the component at the given location, or <code>null</code> if the location is empty
* @exception IllegalArgumentException if the constraint object is not one of the five specified
* constants
* @exception NullPointerException if the target parameter is null
* @see #addLayoutComponent(java.awt.Component, java.lang.Object)
* @since 1.5
*/
public Component getLayoutComponent(Container target, Object constraints) {
boolean ltr = target.getComponentOrientation().isLeftToRight();
Component result = null;
if (NORTH.equals(constraints)) {
result = (firstLine != null) ? firstLine : north;
} else if (SOUTH.equals(constraints)) {
result = (lastLine != null) ? lastLine : south;
} else if (WEST.equals(constraints)) {
result = ltr ? firstItem : lastItem;
if (result == null) {
result = west;
}
} else if (EAST.equals(constraints)) {
result = ltr ? lastItem : firstItem;
if (result == null) {
result = east;
}
} else if (CENTER.equals(constraints)) {
result = center;
} else {
throw new IllegalArgumentException(
"cannot get component: invalid constraint: " + constraints);
}
return result;
}
/**
* Constructs a <code>BoxLayout</code> object.
*
* @param container The container that needs to be laid out.
* @param way The orientation of the components.
* @exception AWTError If way has an invalid value.
*/
public BoxLayout(Container container, int way) {
int width = 0;
int height = 0;
ComponentOrientation orientation = container.getComponentOrientation();
this.container = container;
this.way = way;
switch (way) {
case X_AXIS:
width = 1;
break;
case Y_AXIS:
height = 1;
break;
case LINE_AXIS:
if (orientation.isHorizontal()) height = 1;
else width = 1;
break;
case PAGE_AXIS:
if (!orientation.isHorizontal()) height = 1;
else width = 1;
break;
default:
throw new AWTError("Invalid value for way");
}
grid = new GridLayout(width, height);
}
/**
* Constructs an instance of <code>AbstractFormBuilder</code> for the given FormLayout and layout
* container.
*
* @param layout the {@link FormLayout} to use
* @param container the layout container
* @throws NullPointerException if the layout or container is null
*/
public AbstractFormBuilder(FormLayout layout, Container container) {
if (layout == null) throw new NullPointerException("The layout must not be null.");
if (container == null) throw new NullPointerException("The layout container must not be null.");
this.container = container;
this.layout = layout;
container.setLayout(layout);
currentCellConstraints = new CellConstraints();
ComponentOrientation orientation = container.getComponentOrientation();
leftToRight = orientation.isLeftToRight() || !orientation.isHorizontal();
}
private int getOrientation(Container container) {
if (!useOrientation) {
return SwingConstants.CENTER;
}
if (container.getComponentOrientation().isLeftToRight()) {
return orientation;
}
switch (orientation) {
case SwingConstants.LEFT:
return SwingConstants.RIGHT;
case SwingConstants.RIGHT:
return SwingConstants.LEFT;
case SwingConstants.CENTER:
return SwingConstants.CENTER;
}
return SwingConstants.LEFT;
}
public void layoutContainer(Container parent) {
Insets insets = parent.getInsets();
if (parent.getComponentOrientation().isLeftToRight()) {
int x = insets.left;
for (Component component : parent.getComponents()) {
Dimension ps = component.getPreferredSize();
component.setBounds(
x, insets.top, ps.width, parent.getHeight() - insets.top - insets.bottom);
x += ps.width - overlap;
}
} else {
int x = parent.getWidth() - insets.right;
for (Component component : parent.getComponents()) {
Dimension ps = component.getPreferredSize();
component.setBounds(
x - ps.width, insets.top, ps.width, parent.getHeight() - insets.top - insets.bottom);
x += overlap - ps.width;
}
}
}
/**
* Lays out the container argument using this border layout.
*
* <p>This method actually reshapes the components in the specified container in order to satisfy
* the constraints of this <code>BorderLayout</code> object. The <code>NORTH</code> and <code>
* SOUTH</code> components, if any, are placed at the top and bottom of the container,
* respectively. The <code>WEST</code> and <code>EAST</code> components are then placed on the
* left and right, respectively. Finally, the <code>CENTER</code> object is placed in any
* remaining space in the middle.
*
* <p>Most applications do not call this method directly. This method is called when a container
* calls its <code>doLayout</code> method.
*
* @param target the container in which to do the layout.
* @see java.awt.Container
* @see java.awt.Container#doLayout()
*/
public void layoutContainer(Container target) {
synchronized (target.getTreeLock()) {
Insets insets = target.getInsets();
int top = insets.top;
int bottom = target.getHeight() - insets.bottom;
int left = insets.left;
int right = target.getWidth() - insets.right;
boolean ltr = target.getComponentOrientation().isLeftToRight();
Component c = null;
if ((c = getChild(NORTH, ltr)) != null) {
c.setSize(right - left, c.getHeight());
Dimension d = c.getPreferredSize();
c.setBounds(left, top, right - left, d.height);
top += d.height + vgap;
}
if ((c = getChild(SOUTH, ltr)) != null) {
c.setSize(right - left, c.getHeight());
Dimension d = c.getPreferredSize();
c.setBounds(left, bottom - d.height, right - left, d.height);
bottom -= d.height + vgap;
}
if ((c = getChild(EAST, ltr)) != null) {
c.setSize(c.getWidth(), bottom - top);
Dimension d = c.getPreferredSize();
c.setBounds(right - d.width, top, d.width, bottom - top);
right -= d.width + hgap;
}
if ((c = getChild(WEST, ltr)) != null) {
c.setSize(c.getWidth(), bottom - top);
Dimension d = c.getPreferredSize();
c.setBounds(left, top, d.width, bottom - top);
left += d.width + hgap;
}
if ((c = getChild(CENTER, ltr)) != null) {
c.setBounds(left, top, right - left, bottom - top);
}
}
}
/**
* Determines the preferred size of the <code>target</code> container using this layout manager,
* based on the components in the container.
*
* <p>Most applications do not call this method directly. This method is called when a container
* calls its <code>getPreferredSize</code> method.
*
* @param target the container in which to do the layout.
* @return the preferred dimensions to lay out the subcomponents of the specified container.
* @see java.awt.Container
* @see java.awt.BorderLayout#minimumLayoutSize
* @see java.awt.Container#getPreferredSize()
*/
public Dimension preferredLayoutSize(Container target) {
synchronized (target.getTreeLock()) {
Dimension dim = new Dimension(0, 0);
boolean ltr = target.getComponentOrientation().isLeftToRight();
Component c = null;
if ((c = getChild(EAST, ltr)) != null) {
Dimension d = c.getPreferredSize();
dim.width += d.width + hgap;
dim.height = Math.max(d.height, dim.height);
}
if ((c = getChild(WEST, ltr)) != null) {
Dimension d = c.getPreferredSize();
dim.width += d.width + hgap;
dim.height = Math.max(d.height, dim.height);
}
if ((c = getChild(CENTER, ltr)) != null) {
Dimension d = c.getPreferredSize();
dim.width += d.width;
dim.height = Math.max(d.height, dim.height);
}
if ((c = getChild(NORTH, ltr)) != null) {
Dimension d = c.getPreferredSize();
dim.width = Math.max(d.width, dim.width);
dim.height += d.height + vgap;
}
if ((c = getChild(SOUTH, ltr)) != null) {
Dimension d = c.getPreferredSize();
dim.width = Math.max(d.width, dim.width);
dim.height += d.height + vgap;
}
Insets insets = target.getInsets();
dim.width += insets.left + insets.right;
dim.height += insets.top + insets.bottom;
return dim;
}
}
/*--------------------------------------------------------------------------*/
public void layoutContainer(Container target) {
synchronized (target.getTreeLock()) {
Insets insets = target.getInsets();
int maxWidth = target.getSize().width - (insets.left + insets.right + hgap * 2);
int nMembers = target.getComponentCount();
int x = 0;
int y = insets.top + vgap;
int rowh = 0;
int start = 0;
boolean ltr = target.getComponentOrientation().isLeftToRight();
for (int i = 0; i < nMembers; i++) {
Component m = target.getComponent(i);
if (m.isVisible()) {
Dimension d = m.getPreferredSize();
m.setSize(d.width, d.height);
if ((x == 0) || ((x + d.width) <= maxWidth)) {
if (x > 0) {
x += hgap;
}
x += d.width;
rowh = Math.max(rowh, d.height);
} else {
moveComponents(target, insets.left, y, maxWidth - x, rowh, start, i, ltr);
x = d.width;
y += vgap + rowh;
rowh = d.height;
start = i;
}
}
}
moveComponents(target, insets.left, y, maxWidth - x, rowh, start, nMembers, ltr);
}
}
public void layoutContainer(Container container) {
Component[] children = container.getComponents();
if (children != null && children.length > 0) {
int numChildren = children.length;
Insets insets = container.getInsets();
int maxWidth = 0;
int maxHeight = 0;
int totalButtonWidth = 0;
int x = 0;
int xOffset = 0;
boolean ltr = container.getComponentOrientation().isLeftToRight();
boolean reverse = (ltr) ? reverseButtons : !reverseButtons;
for (int counter = 0; counter < numChildren; counter++) {
Dimension pref = children[counter].getPreferredSize();
maxWidth = Math.max(maxWidth, pref.width);
maxHeight = Math.max(maxHeight, pref.height);
totalButtonWidth += pref.width;
}
if (getSyncAllWidths()) {
totalButtonWidth = maxWidth * numChildren;
}
totalButtonWidth += (numChildren - 1) * padding;
switch (getOrientation(container)) {
case SwingConstants.LEFT:
x = insets.left;
break;
case SwingConstants.RIGHT:
x = container.getWidth() - insets.right - totalButtonWidth;
break;
case SwingConstants.CENTER:
if (getCentersChildren() || numChildren < 2) {
x = (container.getWidth() - totalButtonWidth) / 2;
} else {
x = insets.left;
if (getSyncAllWidths()) {
xOffset =
(container.getWidth() - insets.left - insets.right - totalButtonWidth)
/ (numChildren - 1)
+ maxWidth;
} else {
xOffset =
(container.getWidth() - insets.left - insets.right - totalButtonWidth)
/ (numChildren - 1);
}
}
break;
}
for (int counter = 0; counter < numChildren; counter++) {
int index = (reverse) ? numChildren - counter - 1 : counter;
Dimension pref = children[index].getPreferredSize();
if (getSyncAllWidths()) {
children[index].setBounds(x, insets.top, maxWidth, maxHeight);
} else {
children[index].setBounds(x, insets.top, pref.width, pref.height);
}
if (xOffset != 0) {
x += xOffset;
} else {
x += children[index].getWidth() + padding;
}
}
}
}
/**
* This method is obsolete and supplied for backwards compatability only; new code should call
* {@link #arrangeGrid(Container) arrangeGrid} instead.
*/
protected void ArrangeGrid(Container parent) {
Component comp;
int compindex;
GridBagConstraints constraints;
Insets insets = parent.getInsets();
Component components[] = parent.getComponents();
Dimension d;
Rectangle r = new Rectangle();
int i, diffw, diffh;
double weight;
GridBagLayoutInfo info;
rightToLeft = !parent.getComponentOrientation().isLeftToRight();
/*
* If the parent has no slaves anymore, then don't do anything
* at all: just leave the parent's size as-is.
*/
if (components.length == 0
&& (columnWidths == null || columnWidths.length == 0)
&& (rowHeights == null || rowHeights.length == 0)) {
return;
}
/*
* Pass #1: scan all the slaves to figure out the total amount
* of space needed.
*/
info = getLayoutInfo(parent, PREFERREDSIZE);
d = getMinSize(parent, info);
if (parent.width < d.width || parent.height < d.height) {
info = getLayoutInfo(parent, MINSIZE);
d = getMinSize(parent, info);
}
layoutInfo = info;
r.width = d.width;
r.height = d.height;
/*
* DEBUG
*
* DumpLayoutInfo(info);
* for (compindex = 0 ; compindex < components.length ; compindex++) {
* comp = components[compindex];
* if (!comp.isVisible())
* continue;
* constraints = lookupConstraints(comp);
* DumpConstraints(constraints);
* }
* System.out.println("minSize " + r.width + " " + r.height);
*/
/*
* If the current dimensions of the window don't match the desired
* dimensions, then adjust the minWidth and minHeight arrays
* according to the weights.
*/
diffw = parent.width - r.width;
if (diffw != 0) {
weight = 0.0;
for (i = 0; i < info.width; i++) weight += info.weightX[i];
if (weight > 0.0) {
for (i = 0; i < info.width; i++) {
int dx = (int) ((((double) diffw) * info.weightX[i]) / weight);
info.minWidth[i] += dx;
r.width += dx;
if (info.minWidth[i] < 0) {
r.width -= info.minWidth[i];
info.minWidth[i] = 0;
}
}
}
diffw = parent.width - r.width;
} else {
diffw = 0;
}
diffh = parent.height - r.height;
if (diffh != 0) {
weight = 0.0;
for (i = 0; i < info.height; i++) weight += info.weightY[i];
if (weight > 0.0) {
for (i = 0; i < info.height; i++) {
int dy = (int) ((((double) diffh) * info.weightY[i]) / weight);
info.minHeight[i] += dy;
r.height += dy;
if (info.minHeight[i] < 0) {
r.height -= info.minHeight[i];
info.minHeight[i] = 0;
}
}
}
diffh = parent.height - r.height;
} else {
diffh = 0;
}
/*
* DEBUG
*
* System.out.println("Re-adjusted:");
* DumpLayoutInfo(info);
*/
/*
* Now do the actual layout of the slaves using the layout information
* that has been collected.
*/
info.startx = diffw / 2 + insets.left;
info.starty = diffh / 2 + insets.top;
for (compindex = 0; compindex < components.length; compindex++) {
comp = components[compindex];
if (!comp.isVisible()) continue;
constraints = lookupConstraints(comp);
if (!rightToLeft) {
r.x = info.startx;
for (i = 0; i < constraints.tempX; i++) r.x += info.minWidth[i];
} else {
r.x = parent.width - (diffw / 2 + insets.right);
for (i = 0; i < constraints.tempX; i++) r.x -= info.minWidth[i];
}
r.y = info.starty;
for (i = 0; i < constraints.tempY; i++) r.y += info.minHeight[i];
r.width = 0;
for (i = constraints.tempX; i < (constraints.tempX + constraints.tempWidth); i++) {
r.width += info.minWidth[i];
}
r.height = 0;
for (i = constraints.tempY; i < (constraints.tempY + constraints.tempHeight); i++) {
r.height += info.minHeight[i];
}
adjustForGravity(constraints, r);
/* fix for 4408108 - components were being created outside of the container */
if (r.x < 0) {
r.width -= r.x;
r.x = 0;
}
if (r.y < 0) {
r.height -= r.y;
r.y = 0;
}
/*
* If the window is too small to be interesting then
* unmap it. Otherwise configure it and then make sure
* it's mapped.
*/
if ((r.width <= 0) || (r.height <= 0)) {
comp.setBounds(0, 0, 0, 0);
} else {
if (comp.x != r.x || comp.y != r.y || comp.width != r.width || comp.height != r.height) {
comp.setBounds(r.x, r.y, r.width, r.height);
}
}
}
}
@Override
public void layoutContainer(Container target) {
synchronized (target.getTreeLock()) {
Insets insets = target.getInsets();
int maxwidth = target.getWidth() - (insets.left + insets.right + getHgap() * 2);
int nmembers = target.getComponentCount();
int x = 0, y = insets.top + getVgap();
int rowh = 0, start = 0;
boolean ltr = target.getComponentOrientation().isLeftToRight();
SizeRequirements[] xChildren = new SizeRequirements[nmembers];
SizeRequirements[] yChildren = new SizeRequirements[nmembers];
for (int i = 0; i < nmembers; i++) {
Component c = target.getComponent(i);
if (!c.isVisible()) {
xChildren[i] = new SizeRequirements(0, 0, 0, c.getAlignmentX());
yChildren[i] = new SizeRequirements(0, 0, 0, c.getAlignmentY());
} else {
Dimension min = c.getMinimumSize();
Dimension typ = c.getPreferredSize();
Dimension max = c.getMaximumSize();
xChildren[i] = new SizeRequirements(min.width, typ.width, max.width, c.getAlignmentX());
yChildren[i] =
new SizeRequirements(min.height, typ.height, max.height, c.getAlignmentY());
if ((x == 0) || ((x + typ.width) <= maxwidth)) {
if (x > 0) {
x += getHgap();
}
x += typ.width;
rowh = Math.max(rowh, typ.height);
} else {
layoutComponents(
target,
insets.left + getHgap(),
y,
maxwidth,
rowh,
xChildren,
yChildren,
start,
i,
ltr);
x = typ.width;
y += getVgap() + rowh;
rowh = typ.height;
start = i;
}
}
}
layoutComponents(
target,
insets.left + getHgap(),
y,
maxwidth,
rowh,
xChildren,
yChildren,
start,
nmembers,
ltr);
}
}
public void layoutContainer(Container container) {
Component[] children = container.getComponents();
if (children != null && children.length > 0) {
int numChildren = children.length;
Dimension[] sizes = new Dimension[numChildren];
int counter;
int yLocation = container.getInsets().top;
if (syncAllWidths) {
int maxWidth = getMinimumButtonWidth();
for (counter = 0; counter < numChildren; counter++) {
sizes[counter] = children[counter].getPreferredSize();
maxWidth = Math.max(maxWidth, sizes[counter].width);
}
int xLocation;
int xOffset;
if (getCentersChildren()) {
xLocation =
(container.getSize().width - (maxWidth * numChildren + (numChildren - 1) * padding))
/ 2;
xOffset = padding + maxWidth;
} else {
if (numChildren > 1) {
xLocation = 0;
xOffset =
(container.getSize().width - (maxWidth * numChildren)) / (numChildren - 1)
+ maxWidth;
} else {
xLocation = (container.getSize().width - maxWidth) / 2;
xOffset = 0;
}
}
boolean ltr = container.getComponentOrientation().isLeftToRight();
for (counter = 0; counter < numChildren; counter++) {
int index = (ltr) ? counter : numChildren - counter - 1;
children[index].setBounds(xLocation, yLocation, maxWidth, sizes[index].height);
xLocation += xOffset;
}
} else {
int totalWidth = 0;
for (counter = 0; counter < numChildren; counter++) {
sizes[counter] = children[counter].getPreferredSize();
totalWidth += sizes[counter].width;
}
totalWidth += ((numChildren - 1) * padding);
boolean cc = getCentersChildren();
int xOffset;
int xLocation;
if (cc) {
xLocation = (container.getSize().width - totalWidth) / 2;
xOffset = padding;
} else {
if (numChildren > 1) {
xOffset = (container.getSize().width - totalWidth) / (numChildren - 1);
xLocation = 0;
} else {
xLocation = (container.getSize().width - totalWidth) / 2;
xOffset = 0;
}
}
boolean ltr = container.getComponentOrientation().isLeftToRight();
for (counter = 0; counter < numChildren; counter++) {
int index = (ltr) ? counter : numChildren - counter - 1;
children[index].setBounds(xLocation, yLocation, sizes[index].width, sizes[index].height);
xLocation += xOffset + sizes[index].width;
}
}
}
}
