Autocompletion of imports, class names, and static fields and methods after a classname

src/main/java/org/scijava/ui/swing/script/EditorPane.java

@@ -71,6 +71,7 @@
 import org.scijava.script.ScriptHeaderService;
 import org.scijava.script.ScriptLanguage;
 import org.scijava.script.ScriptService;
+import org.scijava.ui.swing.script.autocompletion.JythonAutoCompletion;
 import org.scijava.util.FileUtils;
 
 /**
@@ -106,6 +107,8 @@ public class EditorPane extends RSyntaxTextArea implements DocumentListener {
 	private PrefService prefService;
 	@Parameter
 	private LogService log;
+
+	private JythonAutoCompletion autoCompletionProxy;
 
 	/**
 	 * Constructor.

src/main/java/org/scijava/ui/swing/script/TextEditor.java

@@ -30,6 +30,7 @@
 package org.scijava.ui.swing.script;
 
 import java.awt.Color;
+import java.awt.Cursor;
 import java.awt.Dimension;
 import java.awt.Font;
 import java.awt.GridBagConstraints;
@@ -108,6 +109,7 @@
 import javax.swing.JCheckBoxMenuItem;
 import javax.swing.JFileChooser;
 import javax.swing.JFrame;
+import javax.swing.JLabel;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
@@ -156,6 +158,7 @@
 import org.scijava.thread.ThreadService;
 import org.scijava.ui.CloseConfirmable;
 import org.scijava.ui.UIService;
+import org.scijava.ui.swing.script.autocompletion.ClassUtil;
 import org.scijava.ui.swing.script.commands.ChooseFontSize;
 import org.scijava.ui.swing.script.commands.ChooseTabSize;
 import org.scijava.ui.swing.script.commands.GitGrep;
@@ -214,7 +217,7 @@ public class TextEditor extends JFrame implements ActionListener,
 			openMacroFunctions, decreaseFontSize, increaseFontSize, chooseFontSize,
 			chooseTabSize, gitGrep, openInGitweb, replaceTabsWithSpaces,
 			replaceSpacesWithTabs, toggleWhiteSpaceLabeling, zapGremlins,
-			savePreferences, toggleAutoCompletionMenu;
+			savePreferences, toggleAutoCompletionMenu, openClassOrPackageHelp;
 	private RecentFilesMenuItem openRecent;
 	private JMenu gitMenu, tabsMenu, fontSizeMenu, tabSizeMenu, toolsMenu,
 			runMenu, whiteSpaceMenu;
@@ -483,6 +486,8 @@ public TextEditor(final Context context) {
 		openHelp =
 			addToMenu(toolsMenu, "Open Help for Class (with frames)...", 0, 0);
 		openHelp.setMnemonic(KeyEvent.VK_P);
+		openClassOrPackageHelp = addToMenu(toolsMenu, "Source or javadoc for class or package...", 0, 0);
+		openClassOrPackageHelp.setMnemonic(KeyEvent.VK_S);
 		openMacroFunctions =
 			addToMenu(toolsMenu, "Open Help on Macro Functions...", 0, 0);
 		openMacroFunctions.setMnemonic(KeyEvent.VK_H);
@@ -988,7 +993,12 @@ public void loadPreferences() {
 
 		final int windowWidth = prefService.getInt(getClass(), WINDOW_WIDTH, dim.width);
 		final int windowHeight = prefService.getInt(getClass(), WINDOW_HEIGHT, dim.height);
-		setPreferredSize(new Dimension(windowWidth, windowHeight));
+		// Avoid creating a window larger than the desktop
+		final Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
+		if (windowWidth > screen.getWidth() || windowHeight > screen.getHeight())
+			setPreferredSize(new Dimension(DEFAULT_WINDOW_WIDTH, DEFAULT_WINDOW_HEIGHT));
+		else
+			setPreferredSize(new Dimension(windowWidth, windowHeight));
 
 		final int mainDivLocation = prefService.getInt(getClass(), MAIN_DIV_LOCATION, body.getDividerLocation());
 		body.setDividerLocation(mainDivLocation);
@@ -1395,6 +1405,7 @@ else if (source == savePreferences) {
 		}
 		else if (source == openHelp) openHelp(null);
 		else if (source == openHelpWithoutFrames) openHelp(null, false);
+		else if (source == openClassOrPackageHelp) openClassOrPackageHelp(null);
 		else if (source == openMacroFunctions) try {
 			new MacroFunctions(this).openHelp(getTextArea().getSelectedText());
 		}
@@ -2659,6 +2670,87 @@ public void openHelp(String className, final boolean withFrames) {
 			handleException(e);
 		}
 	}
+
+	/**
+	 * @param text Either a classname, or a partial class name, or package name or any part of the fully qualified class name.
+	 */
+	public void openClassOrPackageHelp(String text) {
+		if (text == null)
+			text = getSelectedClassNameOrAsk();
+		if (null == text) return;
+		new Thread(new FindClassSourceAndJavadoc(text)).start(); // fork away from event dispatch thread
+	}
+
+	public class FindClassSourceAndJavadoc implements Runnable {
+		private final String text;
+		public FindClassSourceAndJavadoc(final String text) {
+			this.text = text;
+		}
+		@Override
+		public void run() {
+			setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
+			final HashMap<String, ArrayList<String>> matches;
+			try {
+				 matches = ClassUtil.findDocumentationForClass(text);
+			} finally {
+				setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
+			}
+			if (matches.isEmpty()) {
+				JOptionPane.showMessageDialog(getEditorPane(), "No info found for:\n'" + text +'"');
+				return;
+			}
+			final JPanel panel = new JPanel();
+			final GridBagLayout gridbag = new GridBagLayout();
+			final GridBagConstraints c = new GridBagConstraints();
+			panel.setLayout(gridbag);
+			panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
+			final List<String> keys = new ArrayList<String>(matches.keySet());
+			Collections.sort(keys);
+			c.gridy = 0;
+			for (final String classname: keys) {
+				c.gridx = 0;
+				c.anchor = GridBagConstraints.EAST;
+				final JLabel class_label = new JLabel(classname);
+				gridbag.setConstraints(class_label, c);
+				panel.add(class_label);
+				ArrayList<String> urls = matches.get(classname);
+				if (urls.isEmpty()) {
+					urls = new ArrayList<String>();
+					urls.add("https://duckduckgo.com/?q=" + classname);
+				}
+				for (final String url: urls) {
+					c.gridx += 1;
+					c.anchor = GridBagConstraints.WEST;
+					String title = "JavaDoc";
+					if (url.endsWith(".java")) title = "Source";
+					else if (url.contains("duckduckgo")) title = "Search...";
+					final JButton link = new JButton(title);
+					gridbag.setConstraints(link, c);
+					panel.add(link);
+					link.addActionListener(new ActionListener() {
+						public void actionPerformed(final ActionEvent event) {
+							try {
+								platformService.open(new URL(url));
+							} catch (Exception e) {
+								e.printStackTrace();
+							}
+						}
+					});
+				}
+				c.gridy += 1;
+			}
+			final JScrollPane jsp = new JScrollPane(panel);
+			//jsp.setPreferredSize(new Dimension(800, 500));
+			SwingUtilities.invokeLater(new Runnable() {
+				public void run() {
+					final JFrame frame = new JFrame(text);
+					frame.getContentPane().add(jsp);
+					frame.pack();
+					frame.setVisible(true);
+				}
+			});
+		}
+	}
 
 	public void extractSourceJar() {
 		final File file = openWithDialog(null);