HTML-editor/DisplayWindow.java at master · victoriahuang1/HTML-editor · GitHub

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import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.DefaultCaret;

public class DisplayWindow {

	public static void main(String[] args) {
		/**
		JEditorPane editor = new JEditorPane(); // the thing that the HTML file appears in
		editor.setEditable(false);				// so that no weird things appear on the screen (set to true to see a funny html page)

		try {
			editor.setPage("http://www.google.com"); // remove later - html of website we want to see
		}catch (IOException e) {
			editor.setContentType("text/html");
			editor.setText("<html>Could not load</html>");
		}**/

		/**
		 * regular GUI stuff to make the things appear on the screen
		 *
		 */

		PageDisplay HTMLPage = new PageDisplay(null); // to change with loaded file
		Editor editor = new Editor();	// to change with src code
		Reader reader = new Reader(null);

		editor.getDocument().addDocumentListener(new DocumentListener() {

			@Override
			public void changedUpdate(DocumentEvent e) {
				updatePage();
			}

			@Override
			public void insertUpdate(DocumentEvent e) {
				updatePage();
			}

			@Override
			public void removeUpdate(DocumentEvent e) {
				updatePage();
			}

			private void updatePage() {
				HTMLPage.displayFromEditor(editor.getCode());
			}

		});

		JScrollPane scrollPagePane = new JScrollPane(HTMLPage);
		DefaultCaret caret = (DefaultCaret) HTMLPage.getCaret();
		caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
		scrollPagePane.setPreferredSize(new Dimension(800, 600));
		JFrame frame = new JFrame("HTML Editor");

		JScrollPane scrollEditPane = new JScrollPane(editor);
		scrollEditPane.setPreferredSize(new Dimension(600, 600));

		JSplitPane mainPanel = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, scrollEditPane, scrollPagePane);
		frame.add(mainPanel, BorderLayout.CENTER);

		// control panel or toolbar
		final JPanel control_panel = new JPanel();
        frame.add(control_panel, BorderLayout.NORTH);

        final JButton load = new JButton("Load");
        load.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
            	try {
            		FileTools.loadFile(frame);
            		HTMLPage.updateFile(FileTools.getFile());
            		reader.updateCode(FileTools.getFile());
            		editor.updateCode(reader.getCode());
            	} catch (IllegalArgumentException ex) {
            		if (FileTools.getFile() != null) {
            			HTMLPage.errorPage();
            		}
            	}
            }
        });
        final JButton newFile = new JButton("New");
        newFile.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
            	try {
            		FileTools.newFile();
            		HTMLPage.updateFile(FileTools.getFile());
            		reader.updateCode(FileTools.getFile());
            		editor.updateCode(reader.getCode());
            	} catch (IllegalArgumentException ex) {
        			HTMLPage.errorPage();
            	}
            }
        });
        final JButton save = new JButton("Save");
        save.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                FileTools.saveFile(frame, editor.getCode());
            }
        });
        control_panel.add(load);
        control_panel.add(newFile);
        control_panel.add(save);

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLocation(300, 100);
		frame.pack();
		frame.setVisible(true);
	}

}