public static void clearAll(JEditorPane txt) {
try {
txt.setText("");
HTMLEditorKit kit = (HTMLEditorKit) txt.getEditorKit();
HTMLDocument doc = (HTMLDocument) txt.getDocument();
kit.insertHTML(
doc, 0, "<body style=\"font-family:'Courier New';font-size: 12pt;\">", 0, 0, null);
} catch (Exception e) {
}
}
public EditorPaneHTMLHelp(String htmlFile) {
if (GlobalValues.useSystemBrowserForHelp) {
Desktop d = GlobalValues.desktop;
try {
// create a temp file
GlobalValues.forHTMLHelptempFile = new File("tempHTMLHelpSynthetic.html");
FileWriter fw = new FileWriter(GlobalValues.forHTMLHelptempFile);
java.util.List<String> list = readTextFromJar(htmlFile);
Iterator<String> it = list.iterator();
while (it.hasNext()) {
fw.write(it.next() + "\n");
}
String canonicalPathOfFile = GlobalValues.forHTMLHelptempFile.getCanonicalPath();
URL urlFile = new URL("file://" + canonicalPathOfFile);
URI uriOfFile = urlFile.toURI();
fw.close();
d.browse(uriOfFile);
} catch (Exception e) {
e.printStackTrace();
}
} else {
URL initialURL = getClass().getResource(htmlFile);
font = GlobalValues.htmlfont;
String title = "HTML Help";
setTitle(title);
final Stack<String> urlStack = new Stack<String>();
final JEditorPane editorPane;
editorPane = new JEditorPane(new HTMLEditorKit().getContentType(), " ");
editorPane.setOpaque(false);
editorPane.setBorder(null);
editorPane.setEditable(false);
JPanel magPanel = new JPanel();
magnificationFactor = GlobalValues.helpMagnificationFactor;
magFactor = new JTextField(Double.toString(magnificationFactor));
JButton magButton = new JButton("Set Magnification: ");
magButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
magnificationFactor = Double.parseDouble(magFactor.getText());
GlobalValues.helpMagnificationFactor = magnificationFactor;
}
});
magPanel.setLayout(new GridLayout(1, 2));
magPanel.add(magButton);
magPanel.add(magFactor);
final JTextField url = new JTextField(initialURL.toString());
// set up hyperlink listener
editorPane.setEditable(false);
try {
// remember URL for back button
urlStack.push(initialURL.toString());
// show URL in text field
url.setText(initialURL.toString());
// add a CSS rule to force body tags to use the default label font
// instead of the value in javax.swing.text.html.default.csss
String bodyRule =
"body { font-family: "
+ font.getFamily()
+ "; "
+ "font-size: "
+ font.getSize() * GlobalValues.helpMagnificationFactor
+ "pt; }";
((HTMLDocument) editorPane.getDocument()).getStyleSheet().addRule(bodyRule);
editorPane.setPage(initialURL);
editorPane.firePropertyChange("dummyProp", true, false);
} catch (IOException e) {
editorPane.setText("Exception: " + e);
}
editorPane.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
String bodyRule =
"body { font-family: "
+ font.getFamily()
+ "; "
+ "font-size: "
+ font.getSize() * GlobalValues.helpMagnificationFactor
+ "pt; }";
((HTMLDocument) editorPane.getDocument()).getStyleSheet().addRule(bodyRule);
}
});
editorPane.addHyperlinkListener(
new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent event) {
if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
try {
// remember URL for back button
urlStack.push(event.getURL().toString());
// show URL in text field
url.setText(event.getURL().toString());
editorPane.setPage(event.getURL());
editorPane.firePropertyChange("dummyProp", true, false);
} catch (IOException e) {
editorPane.setText("Exception: " + e);
}
}
}
});
// set up checkbox for toggling edit mode
final JCheckBox editable = new JCheckBox();
editable.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
editorPane.setEditable(editable.isSelected());
}
});
// set up load button for loading URL
ActionListener listener =
new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
// remember URL for back button
urlStack.push(url.getText());
editorPane.setPage(url.getText());
editorPane.firePropertyChange("dummyProp", true, false);
} catch (IOException e) {
editorPane.setText("Exception: " + e);
}
}
};
JButton loadButton = new JButton("Load/Magnify");
loadButton.addActionListener(listener);
url.addActionListener(listener);
// set up back button and button action
JButton backButton = new JButton("Back");
backButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
if (urlStack.size() <= 1) return;
try {
// get URL from back button
urlStack.pop();
// show URL in text field
String urlString = urlStack.peek();
url.setText(urlString);
editorPane.setPage(urlString);
editorPane.firePropertyChange("dummyProp", true, false);
} catch (IOException e) {
editorPane.setText("Exception: " + e);
}
}
});
JPanel allPanel = new JPanel(new BorderLayout());
// put all control components in a panel
JPanel ctrlPanel = new JPanel(new BorderLayout());
JPanel urlPanel = new JPanel();
urlPanel.add(new JLabel("URL"));
urlPanel.add(url);
JPanel buttonPanel = new JPanel();
buttonPanel.add(loadButton);
buttonPanel.add(backButton);
buttonPanel.add(new JLabel("Editable"));
buttonPanel.add(magPanel);
buttonPanel.add(editable);
ctrlPanel.add(buttonPanel, BorderLayout.NORTH);
ctrlPanel.add(urlPanel, BorderLayout.CENTER);
allPanel.add(ctrlPanel, BorderLayout.NORTH);
allPanel.add(new JScrollPane(editorPane), BorderLayout.CENTER);
add(allPanel);
}
}
/** Construct a new Help panel */
public HelpPanel() {
// Try to build our help tree, keeping an eye out for malformed URLs
try {
// root node
top = new DefaultMutableTreeNode(new HelpItem("MIDIMatrix", "top"));
// matrices node
category = new DefaultMutableTreeNode(new HelpItem("Matrices", "matrices"));
top.add(category);
category.add(new DefaultMutableTreeNode(new HelpItem("Note Entry", "matrices-noteentry")));
category.add(
new DefaultMutableTreeNode(
new HelpItem("Pitches, volume, and instruments", "matrices-metadata")));
category.add(new DefaultMutableTreeNode(new HelpItem("Playback", "matrices-playback")));
// sequences node
category = new DefaultMutableTreeNode(new HelpItem("Sequences", "sequences"));
top.add(category);
category.add(
new DefaultMutableTreeNode(new HelpItem("Parts of a sequence", "sequences-parts")));
category.add(
new DefaultMutableTreeNode(
new HelpItem("Constructing a sequence", "sequences-construction")));
category.add(new DefaultMutableTreeNode(new HelpItem("Playback", "sequences-playback")));
// controls node
category = new DefaultMutableTreeNode(new HelpItem("Controls", "controls"));
top.add(category);
category.add(
new DefaultMutableTreeNode(new HelpItem("MIDI devices", "controls-mididevices")));
category.add(new DefaultMutableTreeNode(new HelpItem("Saving", "controls-saving")));
// about node
category = new DefaultMutableTreeNode(new HelpItem("About", "about"));
top.add(category);
category.add(new DefaultMutableTreeNode(new HelpItem("Author", "about-author")));
category.add(new DefaultMutableTreeNode(new HelpItem("License", "about-license")));
// javadoc node
// category = new DefaultMutableTreeNode(new HelpItem("JavaDoc", base + "javadoc/"));
// top.add(category);
} catch (MalformedURLException e) {
top = new DefaultMutableTreeNode("ERROR");
}
helpTree = new JTree(top);
helpTree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
helpTree.addTreeSelectionListener(
new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
DefaultMutableTreeNode node =
(DefaultMutableTreeNode) helpTree.getLastSelectedPathComponent();
if (node == null) {
return;
}
// try {
helpPane.scrollToReference(((HelpItem) node.getUserObject()).getHash());
/*} catch (IOException exc) {
JOptionPane.showMessageDialog(
null,
"There was a problem fetching the help page " + exc.getMessage() + "\n" +
"Make sure you're connected to the internet before continuing",
"Help Oops!",
JOptionPane.ERROR_MESSAGE,
null);
}*/
}
});
treePane = new JScrollPane(helpTree);
treePane.setPreferredSize(new Dimension(200, 750));
helpPane = new JEditorPane();
scroller = new JScrollPane(helpPane);
helpPane.setEditable(false);
helpPane.setPreferredSize(new Dimension(550, 750));
helpPane.addHyperlinkListener(
new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
JEditorPane pane = (JEditorPane) e.getSource();
if (e instanceof HTMLFrameHyperlinkEvent) {
HTMLFrameHyperlinkEvent evt = (HTMLFrameHyperlinkEvent) e;
HTMLDocument doc = (HTMLDocument) pane.getDocument();
doc.processHTMLFrameHyperlinkEvent(evt);
if (e.getDescription().indexOf("#") != -1) {
System.err.println("Found anchor");
pane.scrollToReference(
e.getDescription().substring(e.getDescription().indexOf("#")));
}
} else {
try {
pane.setPage(e.getURL());
} catch (Throwable t) {
t.printStackTrace();
}
}
}
}
});
try {
helpPane.setPage(HelpPanel.class.getResource("help.xhtml"));
} catch (IOException e) {
helpPane.setText("Couldn't fetch help page, sorry! " + e.getMessage());
}
content = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
content.add(treePane);
content.add(scroller);
add(content);
}
