private String getTextFor(OpenDefinitionsDocument doc) {
DefinitionsPane pane = _frame.getDefPaneGivenODD(doc);
String endl = "\n"; // was StringOps.EOL; but Swing uses '\n' for newLine
int loc = pane.getCaretPosition();
int start = loc;
int end = loc;
String text;
text = doc.getText();
/* get the starting point of 2 lines up... */
for (int i = 0; i < 4; i++) {
if (start > 0) start = text.lastIndexOf(endl, start - endl.length());
}
if (start == -1) start = 0;
// skip the end line, if we're at one
// if (doc.getLength() >= endl.length() && text.substring(start, start+endl.length()) ==
// endl)
// start += endl.length();
if (doc.getLength() >= endl.length()
&& text.substring(start, start + endl.length()).equals(endl)) start += endl.length();
/* get the ending point 2 lines down */
int index;
for (int i = 0; i < 4; i++) {
if (end < doc.getLength()) {
index = text.indexOf(endl, end + endl.length());
if (index != -1) end = index;
}
}
if (end < start) end = start;
text = text.substring(start, end);
return text;
}
/**
* This class extends a Swing view class. Hence it should only be accessed from the event-handling
* thread.
*/
public class RecentDocFrame extends JWindow {
// MainFrame
MainFrame _frame;
// The manager that gives filenames and icons
DisplayManager<OpenDefinitionsDocument> _displayManager = MainFrame.getOddDisplayManager30();
// the label that shows the icon and filename
JLabel _label;
// the panel that holds the label and textpane
JPanel _panel;
// the pane that holds the sample of source
JTextPane _textpane;
// the scroller that holds the text
JScrollPane _scroller;
// the currently selected document
int _current = 0;
int _padding = 4;
LinkedList<OpenDefinitionsDocument> _docs = new LinkedList<OpenDefinitionsDocument>();
private OptionListener<Color> _colorListener =
new OptionListener<Color>() {
public void optionChanged(OptionEvent<Color> oce) {
updateFontColor();
}
};
private OptionListener<Font> _fontListener =
new OptionListener<Font>() {
public void optionChanged(OptionEvent<Font> oce) {
updateFontColor();
}
};
private OptionListener<Boolean> _antialiasListener =
new OptionListener<Boolean>() {
public void optionChanged(OptionEvent<Boolean> oce) {
updateFontColor();
}
};
private OptionListener<Boolean> _showSourceListener =
new OptionListener<Boolean>() {
public void optionChanged(OptionEvent<Boolean> oce) {
_showSource = oce.value;
}
};
/* if the pane should antialias itself */
boolean _antiAliasText = false;
/* if we should show source code when switching */
boolean _showSource;
public RecentDocFrame(MainFrame f) {
super();
_frame = f;
_current = 0;
_label =
new JLabel("...") {
// Enable anti-aliased text by overriding paintComponent.
protected void paintComponent(Graphics g) {
if (_antiAliasText && g instanceof Graphics2D) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
}
super.paintComponent(g);
}
};
_panel = new JPanel();
_scroller = new JScrollPane();
_textpane =
new JTextPane() {
// Enable anti-aliased text by overriding paintComponent.
protected void paintComponent(Graphics g) {
if (_antiAliasText && g instanceof Graphics2D) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
}
super.paintComponent(g);
}
};
_textpane.setText("...");
_scroller.getViewport().add(_textpane);
_scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER);
_scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
_scroller.setMaximumSize(new Dimension(300, 200));
_panel.setLayout(new BorderLayout());
_panel.add(_label, BorderLayout.NORTH);
_panel.add(_scroller, BorderLayout.SOUTH);
getContentPane().add(_panel);
pack();
updateFontColor();
_showSource = DrJava.getConfig().getSetting(OptionConstants.SHOW_SOURCE_WHEN_SWITCHING);
DrJava.getConfig()
.addOptionListener(OptionConstants.DEFINITIONS_BACKGROUND_COLOR, _colorListener);
DrJava.getConfig().addOptionListener(OptionConstants.DEFINITIONS_NORMAL_COLOR, _colorListener);
DrJava.getConfig().addOptionListener(OptionConstants.FONT_MAIN, _fontListener);
DrJava.getConfig().addOptionListener(OptionConstants.TEXT_ANTIALIAS, _antialiasListener);
DrJava.getConfig()
.addOptionListener(OptionConstants.SHOW_SOURCE_WHEN_SWITCHING, _showSourceListener);
}
private void updateFontColor() {
Font mainFont = DrJava.getConfig().getSetting(OptionConstants.FONT_MAIN);
Color backColor = DrJava.getConfig().getSetting(OptionConstants.DEFINITIONS_BACKGROUND_COLOR);
Color fontColor = DrJava.getConfig().getSetting(OptionConstants.DEFINITIONS_NORMAL_COLOR);
/* make it bigger */
Font titleFont = mainFont.deriveFont((float) (mainFont.getSize() + 3));
_antiAliasText = DrJava.getConfig().getSetting(OptionConstants.TEXT_ANTIALIAS).booleanValue();
_label.setForeground(fontColor);
_panel.setBackground(backColor);
_label.setFont(titleFont);
_textpane.setForeground(fontColor);
_textpane.setFont(mainFont);
;
_textpane.setBackground(backColor);
_scroller.setBackground(backColor);
_scroller.setBorder(new EmptyBorder(0, 0, 0, 0));
_panel.setBorder(new LineBorder(fontColor, 1));
}
/**
* Moves the document d to the beginning of the list if it's already in the list, or it adds it to
* the beginning if its not already in the list.
*/
public void pokeDocument(OpenDefinitionsDocument d) {
if (_docs.contains(d)) {
_current = _docs.indexOf(d);
reset();
} else _docs.addFirst(d);
}
/** Removes the document from the list. */
public void closeDocument(OpenDefinitionsDocument d) {
_docs.remove(d);
}
private void show(int _current) {
OpenDefinitionsDocument doc = _docs.get(_current);
String text = getTextFor(doc);
_label.setText(_displayManager.getName(doc));
_label.setIcon(_displayManager.getIcon(doc));
if (text.length() > 0) {
// as wide as the text area wants, but only 200px high
_textpane.setText(text);
_scroller.setPreferredSize(_textpane.getPreferredScrollableViewportSize());
if (_scroller.getPreferredSize().getHeight() > 200)
_scroller.setPreferredSize(
new Dimension((int) _scroller.getPreferredSize().getWidth(), 200));
_scroller.setVisible(_showSource);
} else _scroller.setVisible(false);
Dimension d = _label.getMinimumSize();
d.setSize(d.getWidth() + _padding * 2, d.getHeight() + _padding * 2);
_label.setPreferredSize(d);
_label.setHorizontalAlignment(SwingConstants.CENTER);
_label.setVerticalAlignment(SwingConstants.CENTER);
pack();
centerH();
}
/** Sets the current document to be the next document in the list. */
public void next() {
if (_docs.size() > 0) {
_current++;
if (_current >= _docs.size()) _current = 0;
show(_current);
}
}
/** Sets the current document to be the previous document in the list. */
public void prev() {
if (_docs.size() > 0) {
_current--;
if (_current < 0) _current = _docs.size() - 1;
show(_current);
}
}
private String getTextFor(OpenDefinitionsDocument doc) {
DefinitionsPane pane = _frame.getDefPaneGivenODD(doc);
String endl = "\n"; // was StringOps.EOL; but Swing uses '\n' for newLine
int loc = pane.getCaretPosition();
int start = loc;
int end = loc;
String text;
text = doc.getText();
/* get the starting point of 2 lines up... */
for (int i = 0; i < 4; i++) {
if (start > 0) start = text.lastIndexOf(endl, start - endl.length());
}
if (start == -1) start = 0;
// skip the end line, if we're at one
// if (doc.getLength() >= endl.length() && text.substring(start, start+endl.length()) ==
// endl)
// start += endl.length();
if (doc.getLength() >= endl.length()
&& text.substring(start, start + endl.length()).equals(endl)) start += endl.length();
/* get the ending point 2 lines down */
int index;
for (int i = 0; i < 4; i++) {
if (end < doc.getLength()) {
index = text.indexOf(endl, end + endl.length());
if (index != -1) end = index;
}
}
if (end < start) end = start;
text = text.substring(start, end);
return text;
}
/** Resets the frame to point to the first document in the list. */
public void first() {
_current = 0;
next();
}
public void refreshColor() {}
/** Sets this frame as visible only if _docs is non empty. Also resets the frame accordingly */
public void setVisible(boolean v) {
centerH();
if (_docs.size() > 0) {
if (v) {
centerV();
refreshColor();
first();
} else reset();
super.setVisible(v);
}
}
/** Centers the frame in the screen. */
private void centerH() {
Utilities.setPopupLoc(this, _frame);
}
/** Centers the frame in the screen. */
private void centerV() {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = getSize();
setLocation((int) getLocation().getX(), (screenSize.height - frameSize.height) / 2);
}
/** Moves the selected document to the front of the list. */
public void reset() {
if (_current < _docs.size()) _docs.addFirst(_docs.remove(_current));
}
/** Returns null if the list is empty, or the currently prefered OpenDefinitionsDocument. */
public OpenDefinitionsDocument getDocument() {
if (_docs.size() > 0) return _docs.getFirst();
return null;
}
// private ImageIcon _getIconResource(String name) {
// URL url = RecentDocFrame.class.getResource("icons/" + name);
// if (url != null) return new ImageIcon(url);
// return null;
// }
}