/**
* Messaged from installComponents to create a Container containing the body of the message. The
* icon is the created by calling <code>addIcon</code>.
*/
protected Container createMessageArea() {
JPanel top = new JPanel();
Border topBorder = (Border) DefaultLookup.get(optionPane, this, "OptionPane.messageAreaBorder");
if (topBorder != null) {
top.setBorder(topBorder);
}
top.setLayout(new BorderLayout());
/* Fill the body. */
Container body = new JPanel(new GridBagLayout());
Container realBody = new JPanel(new BorderLayout());
body.setName("OptionPane.body");
realBody.setName("OptionPane.realBody");
if (getIcon() != null) {
JPanel sep = new JPanel();
sep.setName("OptionPane.separator");
sep.setPreferredSize(new Dimension(15, 1));
realBody.add(sep, BorderLayout.BEFORE_LINE_BEGINS);
}
realBody.add(body, BorderLayout.CENTER);
GridBagConstraints cons = new GridBagConstraints();
cons.gridx = cons.gridy = 0;
cons.gridwidth = GridBagConstraints.REMAINDER;
cons.gridheight = 1;
cons.anchor =
DefaultLookup.getInt(
optionPane, this, "OptionPane.messageAnchor", GridBagConstraints.CENTER);
cons.insets = new Insets(0, 0, 3, 0);
addMessageComponents(body, cons, getMessage(), getMaxCharactersPerLineCount(), false);
top.add(realBody, BorderLayout.CENTER);
addIcon(top);
return top;
}
/**
* Creates the appropriate object to represent <code>msg</code> and places it into <code>container
* </code>. If <code>msg</code> is an instance of Component, it is added directly, if it is an
* Icon, a JLabel is created to represent it, otherwise a JLabel is created for the string, if
* <code>d</code> is an Object[], this method will be recursively invoked for the children. <code>
* internallyCreated</code> is true if Objc is an instance of Component and was created internally
* by this method (this is used to correctly set hasCustomComponents only if !internallyCreated).
*/
protected void addMessageComponents(
Container container,
GridBagConstraints cons,
Object msg,
int maxll,
boolean internallyCreated) {
if (msg == null) {
return;
}
if (msg instanceof Component) {
// To workaround problem where Gridbad will set child
// to its minimum size if its preferred size will not fit
// within allocated cells
if (msg instanceof JScrollPane || msg instanceof JPanel) {
cons.fill = GridBagConstraints.BOTH;
cons.weighty = 1;
} else {
cons.fill = GridBagConstraints.HORIZONTAL;
}
cons.weightx = 1;
container.add((Component) msg, cons);
cons.weightx = 0;
cons.weighty = 0;
cons.fill = GridBagConstraints.NONE;
cons.gridy++;
if (!internallyCreated) {
hasCustomComponents = true;
}
} else if (msg instanceof Object[]) {
Object[] msgs = (Object[]) msg;
for (Object o : msgs) {
addMessageComponents(container, cons, o, maxll, false);
}
} else if (msg instanceof Icon) {
JLabel label = new JLabel((Icon) msg, SwingConstants.CENTER);
configureMessageLabel(label);
addMessageComponents(container, cons, label, maxll, true);
} else {
String s = msg.toString();
int len = s.length();
if (len <= 0) {
return;
}
int nl;
int nll = 0;
if ((nl = s.indexOf(newline)) >= 0) {
nll = newline.length();
} else if ((nl = s.indexOf("\r\n")) >= 0) {
nll = 2;
} else if ((nl = s.indexOf('\n')) >= 0) {
nll = 1;
}
if (nl >= 0) {
// break up newlines
if (nl == 0) {
JPanel breakPanel =
new JPanel() {
public Dimension getPreferredSize() {
Font f = getFont();
if (f != null) {
return new Dimension(1, f.getSize() + 2);
}
return new Dimension(0, 0);
}
};
breakPanel.setName("OptionPane.break");
addMessageComponents(container, cons, breakPanel, maxll, true);
} else {
addMessageComponents(container, cons, s.substring(0, nl), maxll, false);
}
addMessageComponents(container, cons, s.substring(nl + nll), maxll, false);
} else if (len > maxll) {
Container c = Box.createVerticalBox();
c.setName("OptionPane.verticalBox");
burstStringInto(c, s, maxll);
addMessageComponents(container, cons, c, maxll, true);
} else {
JLabel label;
label = new JLabel(s, JLabel.LEADING);
label.setName("OptionPane.label");
configureMessageLabel(label);
addMessageComponents(container, cons, label, maxll, true);
}
}
}