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org.smallmind.swing.banner.Banner Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.swing.banner;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.accessibility.Accessible;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.DefaultListSelectionModel;
import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.JViewport;
import javax.swing.KeyStroke;
import javax.swing.ListModel;
import javax.swing.ListSelectionModel;
import javax.swing.Scrollable;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import org.smallmind.nutsnbolts.util.WeakEventListenerList;
import org.smallmind.swing.ColorUtility;
public class Banner extends JComponent implements Scrollable, Accessible, MouseListener, ListSelectionListener, ListDataListener {
private final WeakEventListenerList listSelectionListenerList = new WeakEventListenerList();
private ListModel listModel;
private ListSelectionModel listSelectionModel;
private BannerCellRenderer bannerRenderer;
public Banner (ListModel listModel) {
ActionMap actionMap;
InputMap inputMap;
bannerRenderer = new DefaultBannerRenderer();
inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
actionMap = getActionMap();
inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0), "selectLeft");
inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0), "selectRight");
actionMap.put("selectLeft", new SelectLeftAction());
actionMap.put("selectRight", new SelectRightAction());
setOpaque(true);
setBackground(ColorUtility.TEXT_COLOR);
setListModel(listModel);
setListSelectionModel(new DefaultListSelectionModel());
addMouseListener(this);
}
public synchronized ListModel getListModel () {
return listModel;
}
public synchronized void setListModel (ListModel listModel) {
if (this.listModel != null) {
this.listModel.removeListDataListener(this);
}
this.listModel = listModel;
this.listModel.addListDataListener(this);
}
public synchronized ListSelectionModel getListSelectionModel () {
return listSelectionModel;
}
public synchronized void setListSelectionModel (ListSelectionModel listSelectionModel) {
if (this.listSelectionModel != null) {
this.listSelectionModel.removeListSelectionListener(this);
}
this.listSelectionModel = listSelectionModel;
this.listSelectionModel.addListSelectionListener(this);
}
public synchronized BannerCellRenderer getBannerCellRenderer () {
return bannerRenderer;
}
public synchronized void setBannerCellRenderer (BannerCellRenderer bannerRenderer) {
this.bannerRenderer = bannerRenderer;
repaint();
}
public void clearSelection () {
listSelectionModel.clearSelection();
}
public synchronized int getIndexAtPoint (Point point) {
BannerCellRenderer bannerRenderer;
Component renderComponent;
int width = 0;
bannerRenderer = getBannerCellRenderer();
for (int count = 0; count < getListModel().getSize(); count++) {
renderComponent = bannerRenderer.getBannerRendererComponent(this, getListModel().getElementAt(count), count, false);
width += (int)renderComponent.getPreferredSize().getWidth();
if (point.getX() <= width) {
return count;
}
}
return -1;
}
private Rectangle getSquashedRectangleAtIndex (int index) {
BannerCellRenderer bannerRenderer;
Component renderComponent;
int xPos = 0;
bannerRenderer = getBannerCellRenderer();
for (int count = 0; count < index; count++) {
renderComponent = bannerRenderer.getBannerRendererComponent(this, getListModel().getElementAt(count), count, false);
xPos += (int)renderComponent.getPreferredSize().getWidth();
}
renderComponent = bannerRenderer.getBannerRendererComponent(this, getListModel().getElementAt(index), index, false);
return new Rectangle(xPos, 0, (int)renderComponent.getPreferredSize().getWidth(), 0);
}
public synchronized void scrollLeft () {
int leadIndex;
if ((leadIndex = listSelectionModel.getLeadSelectionIndex()) >= 0) {
if (leadIndex > 0) {
scrollToIndex(leadIndex - 1, true);
}
}
}
public synchronized void scrollRight () {
int leadIndex;
if ((leadIndex = listSelectionModel.getLeadSelectionIndex()) >= 0) {
if (leadIndex < listModel.getSize() - 1) {
scrollToIndex(leadIndex + 1, true);
}
}
}
public synchronized void scrollToIndex (int index, boolean select) {
Rectangle trackingRectangle;
Rectangle viewRectangle;
int selectedIndex;
if (getParent() instanceof JViewport) {
trackingRectangle = getSquashedRectangleAtIndex(index);
viewRectangle = ((JViewport)getParent()).getViewRect();
if ((trackingRectangle.getX() < viewRectangle.getX()) || ((trackingRectangle.getX() + trackingRectangle.getWidth()) > (viewRectangle.getX() + viewRectangle.getWidth()))) {
selectedIndex = listSelectionModel.getLeadSelectionIndex();
if ((selectedIndex < 0) || (index <= selectedIndex)) {
((JViewport)getParent()).setViewPosition(new Point((int)trackingRectangle.getX(), 0));
} else {
((JViewport)getParent()).setViewPosition(new Point((int)(trackingRectangle.getX() + trackingRectangle.getWidth() - viewRectangle.getWidth()), 0));
}
}
}
if (select) {
listSelectionModel.setSelectionInterval(index, index);
}
}
public void valueChanged (ListSelectionEvent listSelectionEvent) {
synchronized (listSelectionListenerList) {
ListSelectionEvent translatedEvent = new ListSelectionEvent(this, listSelectionEvent.getFirstIndex(), listSelectionEvent.getLastIndex(), listSelectionEvent.getValueIsAdjusting());
for (ListSelectionListener listSelectionListener : listSelectionListenerList) {
listSelectionListener.valueChanged(translatedEvent);
}
}
repaint();
}
public void intervalAdded (ListDataEvent listDataEvent) {
repaint();
}
public void intervalRemoved (ListDataEvent listDataEvent) {
repaint();
}
public void contentsChanged (ListDataEvent listDataEvent) {
getListSelectionModel().clearSelection();
repaint();
}
public synchronized void mouseClicked (MouseEvent mouseEvent) {
int anchorIndex;
int index;
if ((index = getIndexAtPoint(mouseEvent.getPoint())) >= 0) {
if (mouseEvent.isShiftDown()) {
if ((anchorIndex = listSelectionModel.getAnchorSelectionIndex()) < 0) {
listSelectionModel.setSelectionInterval(index, index);
} else {
listSelectionModel.setSelectionInterval(anchorIndex, index);
}
} else if (mouseEvent.isControlDown()) {
if (listSelectionModel.isSelectedIndex(index)) {
listSelectionModel.removeSelectionInterval(index, index);
} else {
listSelectionModel.addSelectionInterval(index, index);
}
} else {
listSelectionModel.setSelectionInterval(index, index);
}
requestFocusInWindow();
}
}
public void mousePressed (MouseEvent mouseEvent) {
}
public void mouseReleased (MouseEvent mouseEvent) {
}
public void mouseEntered (MouseEvent mouseEvent) {
}
public void mouseExited (MouseEvent mouseEvent) {
}
public synchronized Dimension getPreferredScrollableViewportSize () {
return getPreferredSize();
}
public synchronized int getScrollableUnitIncrement (Rectangle visibleRect, int orientation, int direction) {
Rectangle viewRectangle;
int index;
int jiggleJump = 0;
viewRectangle = ((JViewport)getParent()).getViewRect();
if (direction < 0) {
if (viewRectangle.getX() > 0) {
index = getIndexAtPoint(new Point((int)viewRectangle.getX(), 0));
jiggleJump = (int)(viewRectangle.getX() - getSquashedRectangleAtIndex(index).getX());
if (jiggleJump == 0) {
jiggleJump += getSquashedRectangleAtIndex(index - 1).getWidth();
}
}
} else if (direction > 0) {
if ((viewRectangle.getX() + viewRectangle.getWidth()) < getPreferredSize().getWidth()) {
index = getIndexAtPoint(new Point((int)(viewRectangle.getX() + viewRectangle.getWidth()), 0));
jiggleJump = (int)((getSquashedRectangleAtIndex(index).getX() + getSquashedRectangleAtIndex(index).getWidth()) - (viewRectangle.getX() + viewRectangle.getWidth()));
if (jiggleJump == 0) {
jiggleJump += getSquashedRectangleAtIndex(index + 1).getWidth();
}
}
}
return jiggleJump;
}
public synchronized int getScrollableBlockIncrement (Rectangle visibleRect, int orientation, int direction) {
Dimension preferredSize;
Rectangle viewRectangle;
viewRectangle = ((JViewport)getParent()).getViewRect();
if (direction < 0) {
return (int)viewRectangle.getX();
} else if (direction > 0) {
preferredSize = getPreferredSize();
return (int)(preferredSize.getWidth() - viewRectangle.getX() + viewRectangle.getWidth());
}
return 0;
}
public synchronized boolean getScrollableTracksViewportWidth () {
return (getParent() instanceof JViewport) && (getParent().getWidth() > getPreferredSize().width);
}
public synchronized boolean getScrollableTracksViewportHeight () {
return (getParent() instanceof JViewport) && (getParent().getHeight() > getPreferredSize().height);
}
public Dimension getMinimumSize () {
return getPreferredSize();
}
public Dimension getMaximumSize () {
return getPreferredSize();
}
public synchronized Dimension getPreferredSize () {
BannerCellRenderer bannerRenderer;
Component renderComponent;
int width = 0;
int height = 0;
bannerRenderer = getBannerCellRenderer();
for (int count = 0; count < getListModel().getSize(); count++) {
renderComponent = bannerRenderer.getBannerRendererComponent(this, getListModel().getElementAt(count), count, false);
width += (int)renderComponent.getPreferredSize().getWidth();
if (renderComponent.getPreferredSize().getHeight() > height) {
height = (int)renderComponent.getPreferredSize().getHeight();
}
}
return new Dimension(width, height);
}
public synchronized void paint (Graphics graphics) {
BannerCellRenderer bannerRenderer;
Component renderComponent;
Dimension renderPreferredSize;
int preferredHeight;
int prevWidth = 0;
preferredHeight = (int)getPreferredSize().getHeight();
bannerRenderer = getBannerCellRenderer();
for (int count = 0; count < getListModel().getSize(); count++) {
renderComponent = bannerRenderer.getBannerRendererComponent(this, getListModel().getElementAt(count), count, listSelectionModel.isSelectedIndex(count));
renderPreferredSize = renderComponent.getPreferredSize();
renderComponent.setBounds(0, 0, (int)renderPreferredSize.getWidth(), preferredHeight);
graphics.translate(prevWidth, 0);
renderComponent.paint(graphics);
prevWidth = (int)renderPreferredSize.getWidth();
}
if (prevWidth < getVisibleRect().getWidth()) {
graphics.setColor(getBackground());
graphics.translate(prevWidth, 0);
graphics.fillRect(0, 0, (int)(getVisibleRect().getWidth() - prevWidth), preferredHeight);
}
}
public synchronized void addListSelectionListener (ListSelectionListener listSelectionListener) {
listSelectionListenerList.addListener(listSelectionListener);
}
public synchronized void removeListSelectionListener (ListSelectionListener listSelectionListener) {
listSelectionListenerList.removeListener(listSelectionListener);
}
public void addListDataListener (ListDataListener listDataListener) {
listModel.addListDataListener(listDataListener);
}
public void removeListDataListener (ListDataListener listDataListener) {
listModel.removeListDataListener(listDataListener);
}
public class SelectLeftAction extends AbstractAction {
public synchronized void actionPerformed (ActionEvent actionEvent) {
scrollLeft();
}
}
public class SelectRightAction extends AbstractAction {
public synchronized void actionPerformed (ActionEvent actionEvent) {
scrollRight();
}
}
}
