+++ /dev/null
-package be.nikiroo.utils.ui;
-
-import java.awt.Dimension;
-import java.awt.LayoutManager;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-
-import javax.swing.BoxLayout;
-import javax.swing.Icon;
-import javax.swing.JButton;
-import javax.swing.JLabel;
-import javax.swing.JTextField;
-
-/**
- * A Swing-based navigation bar, that displays first/previous/next/last page
- * buttons.
- *
- * @author niki
- */
-public class NavBar extends ListenerPanel {
- private static final long serialVersionUID = 1L;
-
- /** The event that is fired on page change. */
- public static final String PAGE_CHANGED = "page changed";
-
- private JTextField page;
- private JLabel maxPage;
- private JLabel label;
-
- private int index = 0;
- private int min = 0;
- private int max = 0;
- private String extraLabel = null;
-
- private JButton first;
- private JButton previous;
- private JButton next;
- private JButton last;
-
- /**
- * Create a new navigation bar.
- * <p>
- * The minimum must be lower or equal to the maximum.
- * <p>
- * Note than a max of "-1" means "infinite".
- *
- * @param min
- * the minimum page number (cannot be negative)
- * @param max
- * the maximum page number (cannot be lower than min, except if
- * -1 (infinite))
- *
- * @throws IndexOutOfBoundsException
- * if min > max and max is not "-1"
- */
- public NavBar(int min, int max) {
- if (min > max && max != -1) {
- throw new IndexOutOfBoundsException(
- String.format("min (%d) > max (%d)", min, max));
- }
-
- LayoutManager layout = new BoxLayout(this, BoxLayout.X_AXIS);
- setLayout(layout);
-
- // Page navigation
- first = new JButton();
- first.addActionListener(new ActionListener() {
- @Override
- public void actionPerformed(ActionEvent e) {
- first();
- }
- });
-
- previous = new JButton();
- previous.addActionListener(new ActionListener() {
- @Override
- public void actionPerformed(ActionEvent e) {
- previous();
- }
- });
-
- page = new JTextField(Integer.toString(min));
- page.setPreferredSize(
- new Dimension(new JButton("1234").getPreferredSize().width,
- new JButton("dummy").getPreferredSize().height));
- page.setMaximumSize(new Dimension(Integer.MAX_VALUE,
- page.getPreferredSize().height));
- page.addActionListener(new ActionListener() {
- @Override
- public void actionPerformed(ActionEvent e) {
- try {
- int pageNb = Integer.parseInt(page.getText());
- if (pageNb < NavBar.this.min || pageNb > NavBar.this.max) {
- throw new NumberFormatException("invalid");
- }
-
- if (setIndex(pageNb))
- fireActionPerformed(PAGE_CHANGED);
- } catch (NumberFormatException nfe) {
- page.setText(Integer.toString(index));
- }
- }
- });
-
- maxPage = new JLabel("of " + max);
-
- next = new JButton();
- next.addActionListener(new ActionListener() {
- @Override
- public void actionPerformed(ActionEvent e) {
- next();
- }
- });
-
- last = new JButton();
- last.addActionListener(new ActionListener() {
- @Override
- public void actionPerformed(ActionEvent e) {
- last();
- }
- });
-
- // Set the << < > >> "icons"
- setIcons(null, null, null, null);
-
- this.add(first);
- this.add(previous);
- this.add(new JLabel(" "));
- this.add(page);
- this.add(new JLabel(" "));
- this.add(maxPage);
- this.add(new JLabel(" "));
- this.add(next);
- this.add(last);
-
- this.add(label = new JLabel(""));
-
- this.min = min;
- this.max = max;
- this.index = min;
-
- updateEnabled();
- updateLabel();
- fireActionPerformed(PAGE_CHANGED);
- }
-
- /**
- * The current index, must be between {@link NavBar#min} and
- * {@link NavBar#max}, both inclusive.
- *
- * @return the index
- */
- public int getIndex() {
- return index;
- }
-
- /**
- * The current index, should be between {@link NavBar#min} and
- * {@link NavBar#max}, both inclusive.
- *
- * @param index
- * the new index
- *
- * @return TRUE if the index changed, FALSE if not (either it was already at
- * that value, or it is outside of the bounds set by
- * {@link NavBar#min} and {@link NavBar#max})
- */
- public synchronized boolean setIndex(int index) {
- if (index != this.index) {
- if (index < min || (index > max && max != -1)) {
- return false;
- }
-
- this.index = index;
- updateLabel();
- updateEnabled();
-
- return true;
- }
-
- return false;
- }
-
- /**
- * The minimun page number. Cannot be negative.
- *
- * @return the min
- */
- public int getMin() {
- return min;
- }
-
- /**
- * The minimum page number. Cannot be negative.
- * <p>
- * May update the index if needed (if the index is < the new min).
- * <p>
- * Will also (always) update the label and enable/disable the required
- * buttons.
- *
- * @param min
- * the new min
- */
- public synchronized void setMin(int min) {
- this.min = min;
- if (index < min) {
- index = min;
- }
-
- updateEnabled();
- updateLabel();
- }
-
- /**
- * The maximum page number. Cannot be lower than min, except if -1
- * (infinite).
- *
- * @return the max
- */
- public int getMax() {
- return max;
- }
-
- /**
- * The maximum page number. Cannot be lower than min, except if -1
- * (infinite).
- * <p>
- * May update the index if needed (if the index is > the new max).
- * <p>
- * Will also (always) update the label and enable/disable the required
- * buttons.
- *
- * @param max
- * the new max
- */
- public synchronized void setMax(int max) {
- this.max = max;
- if (index > max && max != -1) {
- index = max;
- }
-
- maxPage.setText("of " + max);
- updateEnabled();
- updateLabel();
- }
-
- /**
- * The current extra label to display.
- *
- * @return the current label
- */
- public String getExtraLabel() {
- return extraLabel;
- }
-
- /**
- * The current extra label to display.
- *
- * @param currentLabel
- * the new current label
- */
- public void setExtraLabel(String currentLabel) {
- this.extraLabel = currentLabel;
- updateLabel();
- }
-
- /**
- * Change the page to the next one.
- *
- * @return TRUE if it changed
- */
- public synchronized boolean next() {
- if (setIndex(index + 1)) {
- fireActionPerformed(PAGE_CHANGED);
- return true;
- }
-
- return false;
- }
-
- /**
- * Change the page to the previous one.
- *
- * @return TRUE if it changed
- */
- public synchronized boolean previous() {
- if (setIndex(index - 1)) {
- fireActionPerformed(PAGE_CHANGED);
- return true;
- }
-
- return false;
- }
-
- /**
- * Change the page to the first one.
- *
- * @return TRUE if it changed
- */
- public synchronized boolean first() {
- if (setIndex(min)) {
- fireActionPerformed(PAGE_CHANGED);
- return true;
- }
-
- return false;
- }
-
- /**
- * Change the page to the last one.
- *
- * @return TRUE if it changed
- */
- public synchronized boolean last() {
- if (setIndex(max)) {
- fireActionPerformed(PAGE_CHANGED);
- return true;
- }
-
- return false;
- }
-
- /**
- * Set icons for the buttons instead of square brackets.
- * <p>
- * Any NULL value will make the button use square brackets again.
- *
- * @param first
- * the icon of the button "go to first page"
- * @param previous
- * the icon of the button "go to previous page"
- * @param next
- * the icon of the button "go to next page"
- * @param last
- * the icon of the button "go to last page"
- */
- public void setIcons(Icon first, Icon previous, Icon next, Icon last) {
- this.first.setIcon(first);
- this.first.setText(first == null ? "<<" : "");
- this.previous.setIcon(previous);
- this.previous.setText(previous == null ? "<" : "");
- this.next.setIcon(next);
- this.next.setText(next == null ? ">" : "");
- this.last.setIcon(last);
- this.last.setText(last == null ? ">>" : "");
- }
-
- /**
- * Update the label displayed in the UI.
- */
- private void updateLabel() {
- label.setText(getExtraLabel());
- page.setText(Integer.toString(index));
- }
-
- /**
- * Update the navigation buttons "enabled" state according to the current
- * index value.
- */
- private synchronized void updateEnabled() {
- first.setEnabled(index > min);
- previous.setEnabled(index > min);
- next.setEnabled(index < max || max == -1);
- last.setEnabled(index < max || max == -1);
- }
-}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff