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Code Issues Packages Projects Releases Wiki Activity

7027697: /jfc/Notepad demo needs to be improved

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Reviewed-by: rupashka
This commit is contained in:
Alexander Kouznetsov 2011-03-25 13:24:39 +01:00
parent a9452d32b7
commit 3d4529f30f
2 changed files with 363 additions and 260 deletions
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340
jdk/src/share/demo/jfc/Notepad/ElementTreePanel.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 1998, 2000, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -29,17 +29,36 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
*/
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.tree.*;
import javax.swing.undo.*;
import java.awt.*;
import java.beans.*;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.*;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingConstants;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.text.AttributeSet;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.JTextComponent;
import javax.swing.text.StyleConstants;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;
/**
* Displays a tree showing all the elements in a text Document. Selecting
@ -49,16 +68,20 @@ import java.util.*;
*
* @author Scott Violet
*/
public class ElementTreePanel extends JPanel implements CaretListener, DocumentListener, PropertyChangeListener, TreeSelectionListener {
/** Tree showing the documents element structure. */
protected JTree tree;
/** Text component showing elemenst for. */
protected JTextComponent editor;
/** Model for the tree. */
protected ElementTreeModel treeModel;
/** Set to true when updatin the selection. */
protected boolean updatingSelection;
@SuppressWarnings("serial")
public class ElementTreePanel extends JPanel implements CaretListener,
DocumentListener, PropertyChangeListener, TreeSelectionListener {
/** Tree showing the documents element structure. */
protected JTree tree;
/** Text component showing elemenst for. */
protected JTextComponent editor;
/** Model for the tree. */
protected ElementTreeModel treeModel;
/** Set to true when updatin the selection. */
protected boolean updatingSelection;
@SuppressWarnings("LeakingThisInConstructor")
public ElementTreePanel(JTextComponent editor) {
this.editor = editor;
@ -67,25 +90,28 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
// Create the tree.
treeModel = new ElementTreeModel(document);
tree = new JTree(treeModel) {
@Override
public String convertValueToText(Object value, boolean selected,
boolean expanded, boolean leaf,
int row, boolean hasFocus) {
boolean expanded, boolean leaf,
int row, boolean hasFocus) {
// Should only happen for the root
if(!(value instanceof Element))
if (!(value instanceof Element)) {
return value.toString();
}
Element e = (Element)value;
AttributeSet as = e.getAttributes().copyAttributes();
String asString;
Element e = (Element) value;
AttributeSet as = e.getAttributes().copyAttributes();
String asString;
if(as != null) {
StringBuffer retBuffer = new StringBuffer("[");
Enumeration names = as.getAttributeNames();
if (as != null) {
StringBuilder retBuffer = new StringBuilder("[");
Enumeration names = as.getAttributeNames();
while(names.hasMoreElements()) {
Object nextName = names.nextElement();
while (names.hasMoreElements()) {
Object nextName = names.nextElement();
if(nextName != StyleConstants.ResolveAttribute) {
if (nextName != StyleConstants.ResolveAttribute) {
retBuffer.append(" ");
retBuffer.append(nextName);
retBuffer.append("=");
@ -94,16 +120,16 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
retBuffer.append(" ]");
asString = retBuffer.toString();
}
else
} else {
asString = "[ ]";
}
if(e.isLeaf())
return e.getName() + " [" + e.getStartOffset() +
", " + e.getEndOffset() +"] Attributes: " + asString;
return e.getName() + " [" + e.getStartOffset() +
", " + e.getEndOffset() + "] Attributes: " +
asString;
if (e.isLeaf()) {
return e.getName() + " [" + e.getStartOffset() + ", " + e.
getEndOffset() + "] Attributes: " + asString;
}
return e.getName() + " [" + e.getStartOffset() + ", " + e.
getEndOffset() + "] Attributes: " + asString;
}
};
tree.addTreeSelectionListener(this);
@ -117,10 +143,13 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
// This is a temporary workaround, increase the needed size by 15,
// hoping that will be enough.
tree.setCellRenderer(new DefaultTreeCellRenderer() {
@Override
public Dimension getPreferredSize() {
Dimension retValue = super.getPreferredSize();
if(retValue != null)
if (retValue != null) {
retValue.width += 15;
}
return retValue;
}
});
@ -139,7 +168,8 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
add(new JScrollPane(tree), BorderLayout.CENTER);
// Add a label above tree to describe what is being shown
JLabel label = new JLabel("Elements that make up the current document", SwingConstants.CENTER);
JLabel label = new JLabel("Elements that make up the current document",
SwingConstants.CENTER);
label.setFont(new Font("Dialog", Font.BOLD, 14));
add(label, BorderLayout.NORTH);
@ -157,7 +187,7 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
if (this.editor != null) {
Document oldDoc = this.editor.getDocument();
Document oldDoc = this.editor.getDocument();
oldDoc.removeDocumentListener(this);
this.editor.removePropertyChangeListener(this);
@ -167,9 +197,8 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
if (editor == null) {
treeModel = null;
tree.setModel(null);
}
else {
Document newDoc = editor.getDocument();
} else {
Document newDoc = editor.getDocument();
newDoc.addDocumentListener(this);
editor.addPropertyChangeListener(this);
@ -180,17 +209,15 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
// PropertyChangeListener
/**
* Invoked when a property changes. We are only interested in when the
* Document changes to reset the DocumentListener.
*/
public void propertyChange(PropertyChangeEvent e) {
if (e.getSource() == getEditor() &&
e.getPropertyName().equals("document")) {
JTextComponent editor = getEditor();
Document oldDoc = (Document)e.getOldValue();
Document newDoc = (Document)e.getNewValue();
if (e.getSource() == getEditor() && e.getPropertyName().equals(
"document")) {
Document oldDoc = (Document) e.getOldValue();
Document newDoc = (Document) e.getNewValue();
// Reset the DocumentListener
oldDoc.removeDocumentListener(this);
@ -202,9 +229,7 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
}
// DocumentListener
/**
* Gives notification that there was an insert into the document. The
* given range bounds the freshly inserted region.
@ -236,53 +261,50 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
// CaretListener
/**
* Messaged when the selection in the editor has changed. Will update
* the selection in the tree.
*/
public void caretUpdate(CaretEvent e) {
if(!updatingSelection) {
JTextComponent editor = getEditor();
int selBegin = Math.min(e.getDot(), e.getMark());
int end = Math.max(e.getDot(), e.getMark());
Vector paths = new Vector();
TreeModel model = getTreeModel();
Object root = model.getRoot();
int rootCount = model.getChildCount(root);
if (!updatingSelection) {
int selBegin = Math.min(e.getDot(), e.getMark());
int end = Math.max(e.getDot(), e.getMark());
List<TreePath> paths = new ArrayList<TreePath>();
TreeModel model = getTreeModel();
Object root = model.getRoot();
int rootCount = model.getChildCount(root);
// Build an array of all the paths to all the character elements
// in the selection.
for(int counter = 0; counter < rootCount; counter++) {
int start = selBegin;
for (int counter = 0; counter < rootCount; counter++) {
int start = selBegin;
while(start <= end) {
TreePath path = getPathForIndex(start, root,
(Element)model.getChild(root, counter));
Element charElement = (Element)path.
getLastPathComponent();
while (start <= end) {
TreePath path = getPathForIndex(start, root,
(Element) model.getChild(root, counter));
Element charElement = (Element) path.getLastPathComponent();
paths.addElement(path);
if(start >= charElement.getEndOffset())
paths.add(path);
if (start >= charElement.getEndOffset()) {
start++;
else
} else {
start = charElement.getEndOffset();
}
}
}
// If a path was found, select it (them).
int numPaths = paths.size();
int numPaths = paths.size();
if(numPaths > 0) {
TreePath[] pathArray = new TreePath[numPaths];
if (numPaths > 0) {
TreePath[] pathArray = new TreePath[numPaths];
paths.copyInto(pathArray);
paths.toArray(pathArray);
updatingSelection = true;
try {
getTree().setSelectionPaths(pathArray);
getTree().scrollPathToVisible(pathArray[0]);
}
finally {
} finally {
updatingSelection = false;
}
}
@ -290,27 +312,24 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
// TreeSelectionListener
/**
* Called whenever the value of the selection changes.
* @param e the event that characterizes the change.
*/
* Called whenever the value of the selection changes.
* @param e the event that characterizes the change.
*/
public void valueChanged(TreeSelectionEvent e) {
JTree tree = getTree();
if(!updatingSelection && tree.getSelectionCount() == 1) {
TreePath selPath = tree.getSelectionPath();
Object lastPathComponent = selPath.getLastPathComponent();
if (!updatingSelection && tree.getSelectionCount() == 1) {
TreePath selPath = tree.getSelectionPath();
Object lastPathComponent = selPath.getLastPathComponent();
if(!(lastPathComponent instanceof DefaultMutableTreeNode)) {
Element selElement = (Element)lastPathComponent;
if (!(lastPathComponent instanceof DefaultMutableTreeNode)) {
Element selElement = (Element) lastPathComponent;
updatingSelection = true;
try {
getEditor().select(selElement.getStartOffset(),
selElement.getEndOffset());
}
finally {
selElement.getEndOffset());
} finally {
updatingSelection = false;
}
}
@ -318,7 +337,6 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
}
// Local methods
/**
* @return tree showing elements.
*/
@ -347,15 +365,14 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
protected void updateTree(DocumentEvent event) {
updatingSelection = true;
try {
TreeModel model = getTreeModel();
Object root = model.getRoot();
TreeModel model = getTreeModel();
Object root = model.getRoot();
for(int counter = model.getChildCount(root) - 1; counter >= 0;
counter--) {
updateTree(event, (Element)model.getChild(root, counter));
for (int counter = model.getChildCount(root) - 1; counter >= 0;
counter--) {
updateTree(event, (Element) model.getChild(root, counter));
}
}
finally {
} finally {
updatingSelection = false;
}
}
@ -372,53 +389,50 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
DocumentEvent.ElementChange ec = event.getChange(element);
if (ec != null) {
Element[] removed = ec.getChildrenRemoved();
Element[] added = ec.getChildrenAdded();
int startIndex = ec.getIndex();
Element[] removed = ec.getChildrenRemoved();
Element[] added = ec.getChildrenAdded();
int startIndex = ec.getIndex();
// Check for removed.
if(removed != null && removed.length > 0) {
int[] indices = new int[removed.length];
if (removed != null && removed.length > 0) {
int[] indices = new int[removed.length];
for(int counter = 0; counter < removed.length; counter++) {
for (int counter = 0; counter < removed.length; counter++) {
indices[counter] = startIndex + counter;
}
getTreeModel().nodesWereRemoved((TreeNode)element, indices,
removed);
getTreeModel().nodesWereRemoved((TreeNode) element, indices,
removed);
}
// check for added
if(added != null && added.length > 0) {
int[] indices = new int[added.length];
if (added != null && added.length > 0) {
int[] indices = new int[added.length];
for(int counter = 0; counter < added.length; counter++) {
for (int counter = 0; counter < added.length; counter++) {
indices[counter] = startIndex + counter;
}
getTreeModel().nodesWereInserted((TreeNode)element, indices);
getTreeModel().nodesWereInserted((TreeNode) element, indices);
}
}
if(!element.isLeaf()) {
int startIndex = element.getElementIndex
(event.getOffset());
int elementCount = element.getElementCount();
int endIndex = Math.min(elementCount - 1,
element.getElementIndex
(event.getOffset() + event.getLength()));
if (!element.isLeaf()) {
int startIndex = element.getElementIndex(event.getOffset());
int elementCount = element.getElementCount();
int endIndex = Math.min(elementCount - 1,
element.getElementIndex(event.getOffset()
+ event.getLength()));
if(startIndex > 0 && startIndex < elementCount &&
element.getElement(startIndex).getStartOffset() ==
event.getOffset()) {
if (startIndex > 0 && startIndex < elementCount && element.
getElement(startIndex).getStartOffset() == event.getOffset()) {
// Force checking the previous element.
startIndex--;
}
if(startIndex != -1 && endIndex != -1) {
for(int counter = startIndex; counter <= endIndex; counter++) {
if (startIndex != -1 && endIndex != -1) {
for (int counter = startIndex; counter <= endIndex; counter++) {
updateTree(event, element.getElement(counter));
}
}
}
else {
} else {
// Element is a leaf, assume it changed
getTreeModel().nodeChanged((TreeNode)element);
getTreeModel().nodeChanged((TreeNode) element);
}
}
@ -426,14 +440,14 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* Returns a TreePath to the element at <code>position</code>.
*/
protected TreePath getPathForIndex(int position, Object root,
Element rootElement) {
TreePath path = new TreePath(root);
Element child = rootElement.getElement
(rootElement.getElementIndex(position));
Element rootElement) {
TreePath path = new TreePath(root);
Element child = rootElement.getElement(rootElement.getElementIndex(
position));
path = path.pathByAddingChild(rootElement);
path = path.pathByAddingChild(child);
while(!child.isLeaf()) {
while (!child.isLeaf()) {
child = child.getElement(child.getElementIndex(position));
path = path.pathByAddingChild(child);
}
@ -456,7 +470,8 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* methods have been subclassed, primarily to special case the root.
*/
public static class ElementTreeModel extends DefaultTreeModel {
protected Element[] rootElements;
protected Element[] rootElements;
public ElementTreeModel(Document document) {
super(new DefaultMutableTreeNode("root"), false);
@ -474,13 +489,14 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* @param parent a node in the tree, obtained from this data source
* @return the child of <I>parent</I> at index <I>index</I>
*/
@Override
public Object getChild(Object parent, int index) {
if(parent == root)
if (parent == root) {
return rootElements[index];
}
return super.getChild(parent, index);
}
/**
* Returns the number of children of <I>parent</I>. Returns 0
* if the node is a leaf or if it has no children.
@ -490,13 +506,14 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* @param parent a node in the tree, obtained from this data source
* @return the number of children of the node <I>parent</I>
*/
@Override
public int getChildCount(Object parent) {
if(parent == root)
if (parent == root) {
return rootElements.length;
}
return super.getChildCount(parent);
}
/**
* Returns true if <I>node</I> is a leaf. It is possible for
* this method to return false even if <I>node</I> has no
@ -507,21 +524,25 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* @param node a node in the tree, obtained from this data source
* @return true if <I>node</I> is a leaf
*/
@Override
public boolean isLeaf(Object node) {
if(node == root)
if (node == root) {
return false;
}
return super.isLeaf(node);
}
/**
* Returns the index of child in parent.
*/
@Override
public int getIndexOfChild(Object parent, Object child) {
if(parent == root) {
for(int counter = rootElements.length - 1; counter >= 0;
counter--) {
if(rootElements[counter] == child)
if (parent == root) {
for (int counter = rootElements.length - 1; counter >= 0;
counter--) {
if (rootElements[counter] == child) {
return counter;
}
}
return -1;
}
@ -532,18 +553,19 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
* Invoke this method after you've changed how node is to be
* represented in the tree.
*/
@Override
public void nodeChanged(TreeNode node) {
if(listenerList != null && node != null) {
TreeNode parent = node.getParent();
if (listenerList != null && node != null) {
TreeNode parent = node.getParent();
if(parent == null && node != root) {
if (parent == null && node != root) {
parent = root;
}
if(parent != null) {
int anIndex = getIndexOfChild(parent, node);
if (parent != null) {
int anIndex = getIndexOfChild(parent, node);
if(anIndex != -1) {
int[] cIndexs = new int[1];
if (anIndex != -1) {
int[] cIndexs = new int[1];
cIndexs[0] = anIndex;
nodesChanged(parent, cIndexs);
@ -555,26 +577,28 @@ public class ElementTreePanel extends JPanel implements CaretListener, DocumentL
/**
* Returns the path to a particluar node. This is recursive.
*/
@Override
protected TreeNode[] getPathToRoot(TreeNode aNode, int depth) {
TreeNode[] retNodes;
TreeNode[] retNodes;
/* Check for null, in case someone passed in a null node, or
they passed in an element that isn't rooted at root. */
if(aNode == null) {
if(depth == 0)
they passed in an element that isn't rooted at root. */
if (aNode == null) {
if (depth == 0) {
return null;
else
} else {
retNodes = new TreeNode[depth];
}
else {
}
} else {
depth++;
if(aNode == root)
if (aNode == root) {
retNodes = new TreeNode[depth];
else {
} else {
TreeNode parent = aNode.getParent();
if(parent == null)
if (parent == null) {
parent = root;
}
retNodes = getPathToRoot(parent, depth);
}
retNodes[retNodes.length - depth] = aNode;

283
jdk/src/share/demo/jfc/Notepad/Notepad.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -29,20 +29,73 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
*/
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.io.*;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.FileDialog;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.net.URL;
import java.util.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax.swing.JViewport;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.event.UndoableEditEvent;
import javax.swing.event.UndoableEditListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
import javax.swing.text.PlainDocument;
import javax.swing.text.Segment;
import javax.swing.text.TextAction;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.UndoManager;
import javax.swing.text.*;
import javax.swing.undo.*;
import javax.swing.event.*;
import javax.swing.*;
/**
* Sample application using the simple text editor component that
@ -50,22 +103,24 @@ import javax.swing.*;
*
* @author Timothy Prinzing
*/
@SuppressWarnings("serial")
class Notepad extends JPanel {
private static ResourceBundle resources;
private final static String EXIT_AFTER_PAINT = new String("-exit");
private final static String EXIT_AFTER_PAINT = "-exit";
private static boolean exitAfterFirstPaint;
static {
try {
resources = ResourceBundle.getBundle("resources.Notepad",
Locale.getDefault());
Locale.getDefault());
} catch (MissingResourceException mre) {
System.err.println("resources/Notepad.properties not found");
System.exit(1);
}
}
@Override
public void paintChildren(Graphics g) {
super.paintChildren(g);
if (exitAfterFirstPaint) {
@ -73,17 +128,19 @@ class Notepad extends JPanel {
}
}
@SuppressWarnings("OverridableMethodCallInConstructor")
Notepad() {
super(true);
// Force SwingSet to come up in the Cross Platform L&F
// Trying to set Nimbus look and feel
try {
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
// If you want the System L&F instead, comment out the above line and
// uncomment the following:
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception exc) {
System.err.println("Error loading L&F: " + exc);
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception ignored) {
}
setBorder(BorderFactory.createEtchedBorder());
@ -95,7 +152,7 @@ class Notepad extends JPanel {
editor.getDocument().addUndoableEditListener(undoHandler);
// install the command table
commands = new Hashtable();
commands = new HashMap<Object, Action>();
Action[] actions = getActions();
for (int i = 0; i < actions.length; i++) {
Action a = actions[i];
@ -109,15 +166,17 @@ class Notepad extends JPanel {
try {
String vpFlag = resources.getString("ViewportBackingStore");
Boolean bs = Boolean.valueOf(vpFlag);
port.setBackingStoreEnabled(bs.booleanValue());
} catch (MissingResourceException mre) {
port.setScrollMode(bs.booleanValue()
? JViewport.BACKINGSTORE_SCROLL_MODE
: JViewport.BLIT_SCROLL_MODE);
} catch (MissingResourceException ignored) {
// just use the viewport default
}
menuItems = new Hashtable();
menuItems = new HashMap<String, JMenuItem>();
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout());
panel.add("North",createToolbar());
panel.add("North", createToolbar());
panel.add("Center", scroller);
add("Center", panel);
add("South", createStatusbar());
@ -125,28 +184,28 @@ class Notepad extends JPanel {
public static void main(String[] args) {
try {
String vers = System.getProperty("java.version");
if (vers.compareTo("1.1.2") < 0) {
System.out.println("!!!WARNING: Swing must be run with a " +
"1.1.2 or higher version VM!!!");
}
if (args.length > 0 && args[0].equals(EXIT_AFTER_PAINT)) {
exitAfterFirstPaint = true;
}
JFrame frame = new JFrame();
frame.setTitle(resources.getString("Title"));
frame.setBackground(Color.lightGray);
frame.getContentPane().setLayout(new BorderLayout());
Notepad notepad = new Notepad();
frame.getContentPane().add("Center", notepad);
frame.setJMenuBar(notepad.createMenubar());
frame.addWindowListener(new AppCloser());
frame.pack();
frame.setSize(500, 600);
frame.show();
if (args.length > 0 && args[0].equals(EXIT_AFTER_PAINT)) {
exitAfterFirstPaint = true;
}
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
JFrame frame = new JFrame();
frame.setTitle(resources.getString("Title"));
frame.setBackground(Color.lightGray);
frame.getContentPane().setLayout(new BorderLayout());
Notepad notepad = new Notepad();
frame.getContentPane().add("Center", notepad);
frame.setJMenuBar(notepad.createMenubar());
frame.addWindowListener(new AppCloser());
frame.pack();
frame.setSize(500, 600);
frame.setVisible(true);
}
});
} catch (Throwable t) {
System.out.println("uncaught exception: " + t);
t.printStackTrace();
Logger.getLogger(Notepad.class.getName()).log(Level.SEVERE,
"uncaught exception", t);
}
}
@ -177,6 +236,7 @@ class Notepad extends JPanel {
return editor;
}
/**
* To shutdown when run as an application. This is a
* fairly lame implementation. A more self-respecting
@ -184,6 +244,8 @@ class Notepad extends JPanel {
* was needed.
*/
protected static final class AppCloser extends WindowAdapter {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
@ -239,11 +301,11 @@ class Notepad extends JPanel {
* if one wasn't created.
*/
protected JMenuItem getMenuItem(String cmd) {
return (JMenuItem) menuItems.get(cmd);
return menuItems.get(cmd);
}
protected Action getAction(String cmd) {
return (Action) commands.get(cmd);
return commands.get(cmd);
}
protected String getResourceString(String nm) {
@ -328,10 +390,14 @@ class Notepad extends JPanel {
protected JButton createToolbarButton(String key) {
URL url = getResource(key + imageSuffix);
JButton b = new JButton(new ImageIcon(url)) {
public float getAlignmentY() { return 0.5f; }
@Override
public float getAlignmentY() {
return 0.5f;
}
};
b.setRequestFocusEnabled(false);
b.setMargin(new Insets(1,1,1,1));
b.setMargin(new Insets(1, 1, 1, 1));
String astr = getResourceString(key + actionSuffix);
if (astr == null) {
@ -360,15 +426,17 @@ class Notepad extends JPanel {
* resource file.
*/
protected String[] tokenize(String input) {
Vector v = new Vector();
List<String> v = new ArrayList<String>();
StringTokenizer t = new StringTokenizer(input);
String cmd[];
while (t.hasMoreTokens())
v.addElement(t.nextToken());
while (t.hasMoreTokens()) {
v.add(t.nextToken());
}
cmd = new String[v.size()];
for (int i = 0; i < cmd.length; i++)
cmd[i] = (String) v.elementAt(i);
for (int i = 0; i < cmd.length; i++) {
cmd[i] = v.get(i);
}
return cmd;
}
@ -416,13 +484,16 @@ class Notepad extends JPanel {
}
// Yarked from JMenu, ideally this would be public.
private class ActionChangedListener implements PropertyChangeListener {
JMenuItem menuItem;
ActionChangedListener(JMenuItem mi) {
super();
this.menuItem = mi;
}
public void propertyChange(PropertyChangeEvent e) {
String propertyName = e.getPropertyName();
if (e.getPropertyName().equals(Action.NAME)) {
@ -434,56 +505,48 @@ class Notepad extends JPanel {
}
}
}
private JTextComponent editor;
private Hashtable commands;
private Hashtable menuItems;
private Map<Object, Action> commands;
private Map<String, JMenuItem> menuItems;
private JMenuBar menubar;
private JToolBar toolbar;
private JComponent status;
private JFrame elementTreeFrame;
protected ElementTreePanel elementTreePanel;
protected FileDialog fileDialog;
/**
* Listener for the edits on the current document.
*/
protected UndoableEditListener undoHandler = new UndoHandler();
/** UndoManager that we add edits to. */
protected UndoManager undo = new UndoManager();
/**
* Suffix applied to the key used in resource file
* lookups for an image.
*/
public static final String imageSuffix = "Image";
/**
* Suffix applied to the key used in resource file
* lookups for a label.
*/
public static final String labelSuffix = "Label";
/**
* Suffix applied to the key used in resource file
* lookups for an action.
*/
public static final String actionSuffix = "Action";
/**
* Suffix applied to the key used in resource file
* lookups for tooltip text.
*/
public static final String tipSuffix = "Tooltip";
public static final String openAction = "open";
public static final String newAction = "new";
public static final String newAction = "new";
public static final String saveAction = "save";
public static final String exitAction = "exit";
public static final String showElementTreeAction = "showElementTree";
class UndoHandler implements UndoableEditListener {
/**
@ -497,6 +560,7 @@ class Notepad extends JPanel {
}
}
/**
* FIXME - I'm not very useful yet
*/
@ -507,17 +571,14 @@ class Notepad extends JPanel {
setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
}
@Override
public void paint(Graphics g) {
super.paint(g);
}
}
// --- action implementations -----------------------------------
private UndoAction undoAction = new UndoAction();
private RedoAction redoAction = new RedoAction();
/**
* Actions defined by the Notepad class
*/
@ -531,7 +592,9 @@ class Notepad extends JPanel {
redoAction
};
class UndoAction extends AbstractAction {
public UndoAction() {
super("Undo");
setEnabled(false);
@ -541,26 +604,27 @@ class Notepad extends JPanel {
try {
undo.undo();
} catch (CannotUndoException ex) {
System.out.println("Unable to undo: " + ex);
ex.printStackTrace();
Logger.getLogger(UndoAction.class.getName()).log(Level.SEVERE,
"Unable to undo", ex);
}
update();
redoAction.update();
}
protected void update() {
if(undo.canUndo()) {
if (undo.canUndo()) {
setEnabled(true);
putValue(Action.NAME, undo.getUndoPresentationName());
}
else {
} else {
setEnabled(false);
putValue(Action.NAME, "Undo");
}
}
}
class RedoAction extends AbstractAction {
public RedoAction() {
super("Redo");
setEnabled(false);
@ -570,31 +634,32 @@ class Notepad extends JPanel {
try {
undo.redo();
} catch (CannotRedoException ex) {
System.out.println("Unable to redo: " + ex);
ex.printStackTrace();
Logger.getLogger(RedoAction.class.getName()).log(Level.SEVERE,
"Unable to redo", ex);
}
update();
undoAction.update();
}
protected void update() {
if(undo.canRedo()) {
if (undo.canRedo()) {
setEnabled(true);
putValue(Action.NAME, undo.getRedoPresentationName());
}
else {
} else {
setEnabled(false);
putValue(Action.NAME, "Redo");
}
}
}
class OpenAction extends NewAction {
OpenAction() {
super(openAction);
}
@Override
public void actionPerformed(ActionEvent e) {
Frame frame = getFrame();
JFileChooser chooser = new JFileChooser();
@ -607,8 +672,9 @@ class Notepad extends JPanel {
File f = chooser.getSelectedFile();
if (f.isFile() && f.canRead()) {
Document oldDoc = getEditor().getDocument();
if(oldDoc != null)
if (oldDoc != null) {
oldDoc.removeUndoableEditListener(undoHandler);
}
if (elementTreePanel != null) {
elementTreePanel.setEditor(null);
}
@ -625,6 +691,7 @@ class Notepad extends JPanel {
}
}
class SaveAction extends AbstractAction {
SaveAction() {
@ -647,6 +714,7 @@ class Notepad extends JPanel {
}
}
class NewAction extends AbstractAction {
NewAction() {
@ -659,8 +727,9 @@ class Notepad extends JPanel {
public void actionPerformed(ActionEvent e) {
Document oldDoc = getEditor().getDocument();
if(oldDoc != null)
if (oldDoc != null) {
oldDoc.removeUndoableEditListener(undoHandler);
}
getEditor().setDocument(new PlainDocument());
getEditor().getDocument().addUndoableEditListener(undoHandler);
resetUndoManager();
@ -669,6 +738,7 @@ class Notepad extends JPanel {
}
}
/**
* Really lame implementation of an exit command
*/
@ -683,6 +753,7 @@ class Notepad extends JPanel {
}
}
/**
* Action that brings up a JFrame with a JTree showing the structure
* of the document.
@ -698,18 +769,19 @@ class Notepad extends JPanel {
}
public void actionPerformed(ActionEvent e) {
if(elementTreeFrame == null) {
if (elementTreeFrame == null) {
// Create a frame containing an instance of
// ElementTreePanel.
try {
String title = resources.getString
("ElementTreeFrameTitle");
String title = resources.getString("ElementTreeFrameTitle");
elementTreeFrame = new JFrame(title);
} catch (MissingResourceException mre) {
elementTreeFrame = new JFrame();
}
elementTreeFrame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent weeee) {
elementTreeFrame.setVisible(false);
}
@ -721,10 +793,11 @@ class Notepad extends JPanel {
fContentPane.add(elementTreePanel);
elementTreeFrame.pack();
}
elementTreeFrame.show();
elementTreeFrame.setVisible(true);
}
}
/**
* Thread to load a file into the text storage model
*/
@ -736,6 +809,7 @@ class Notepad extends JPanel {
this.doc = doc;
}
@Override
public void run() {
try {
// initialize the statusbar
@ -751,22 +825,22 @@ class Notepad extends JPanel {
char[] buff = new char[4096];
int nch;
while ((nch = in.read(buff, 0, buff.length)) != -1) {
doc.insertString(doc.getLength(), new String(buff, 0, nch), null);
doc.insertString(doc.getLength(), new String(buff, 0, nch),
null);
progress.setValue(progress.getValue() + nch);
}
}
catch (IOException e) {
} catch (IOException e) {
final String msg = e.getMessage();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JOptionPane.showMessageDialog(getFrame(),
"Could not open file: " + msg,
"Error opening file",
JOptionPane.ERROR_MESSAGE);
}
}
});
}
catch (BadLocationException e) {
} catch (BadLocationException e) {
System.err.println(e.getMessage());
}
doc.addUndoableEditListener(undoHandler);
@ -778,21 +852,23 @@ class Notepad extends JPanel {
if (elementTreePanel != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
elementTreePanel.setEditor(getEditor());
}
});
}
}
Document doc;
File f;
}
/**
* Thread to save a document to file
*/
class FileSaver extends Thread {
Document doc;
File f;
@ -802,13 +878,15 @@ class Notepad extends JPanel {
this.doc = doc;
}
@Override
@SuppressWarnings("SleepWhileHoldingLock")
public void run() {
try {
// initialize the statusbar
status.removeAll();
JProgressBar progress = new JProgressBar();
progress.setMinimum(0);
progress.setMaximum((int) doc.getLength());
progress.setMaximum(doc.getLength());
status.add(progress);
status.revalidate();
@ -827,24 +905,25 @@ class Notepad extends JPanel {
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
Logger.getLogger(FileSaver.class.getName()).log(
Level.SEVERE,
null, e);
}
}
out.flush();
out.close();
}
catch (IOException e) {
} catch (IOException e) {
final String msg = e.getMessage();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JOptionPane.showMessageDialog(getFrame(),
"Could not save file: " + msg,
"Error saving file",
JOptionPane.ERROR_MESSAGE);
}
}
});
}
catch (BadLocationException e) {
} catch (BadLocationException e) {
System.err.println(e.getMessage());
}
// we are done... get rid of progressbar