Task day4

Chibi_girl/SimpleTextEditor.java

@@ -0,0 +1,256 @@
+package application;
+import java.io.*;
+import java.awt.*;
+import javax.swing.*;
+import java.util.*;
+import java.awt.event.*;
+import javax.swing.AbstractAction;
+import javax.swing.text.*;
+import javax.swing.undo.*;
+import javax.swing.event.*;
+import javax.swing.plaf.metal.MetalLookAndFeel;
+import javax.swing.plaf.metal.OceanTheme;
+
+public class SimpleTextEditor implements ActionListener
+{
+	JFrame frame;JTextPane txtarea;JScrollPane scroll;
+	JMenuBar menu;JMenu file,edit,exit,view;
+	JMenuItem newfile,openfile,savefile,undo,redo,saveas,copy,cut,paste,view_panel,hide_panel,close,printfile;
+	JPanel panel;JButton bold,italics,underline;JOptionPane dopen,dquit;
+	String filename=null;
+	UndoManager undomanager=new UndoManager();
+	SimpleTextEditor()
+	{
+		frame= new JFrame("TEXT EDITOR");
+		try
+		{
+			 UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+
+		}
+		catch(Exception e) { }
+
+
+	frame.setBounds(100,100,616,444);
+	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+	txtarea= new JTextPane();
+	txtarea.setFont(new Font("Chilanka Regular", Font.PLAIN, 20));
+
+	frame.getContentPane().add(txtarea,BorderLayout.NORTH);
+	txtarea.setBackground(Color.WHITE);
+	txtarea.setForeground(Color.MAGENTA);
+	txtarea.setBounds(200,100,200,100);
+
+
+	scroll= new JScrollPane(txtarea); 
+	frame.getContentPane().add(scroll,BorderLayout.CENTER);
+
+	menu=new JMenuBar();
+	menu.setMargin(new Insets(5,10,5,10));
+	menu.setBackground(new java.awt.Color(120,180,255));
+
+	frame.getContentPane().add(menu,BorderLayout.NORTH);
+
+	file=new JMenu("File");edit=new JMenu("Edit");view=new JMenu("Bottom Panel");
+	menu.add(file);menu.add(new JMenu("|")).setEnabled(false);
+	menu.add(edit);menu.add(new JMenu("|")).setEnabled(false);
+	undomanager=new UndoManager();
+	newfile=new JMenuItem("New");openfile=new JMenuItem("Open");savefile=new JMenuItem("Save");
+	saveas=new JMenuItem("SaveAs");printfile=new JMenuItem("Print");
+	view_panel=new JMenuItem("View");hide_panel=new JMenuItem("Hide");
+	copy=new JMenuItem("Copy");paste=new JMenuItem("Paste");close=new JMenuItem("Exit");
+	cut=new JMenuItem("Cut");
+
+	newfile.addActionListener(this);openfile.addActionListener(this);printfile.addActionListener(this);
+	savefile.addActionListener(this);saveas.addActionListener(this);
+	copy.addActionListener(this);paste.addActionListener(this);cut.addActionListener(this);
+	view_panel.addActionListener(this);hide_panel.addActionListener(this);
+	close.addActionListener(this);
+
+	undo=new JMenuItem("Undo");redo=new JMenuItem("Redo");
+	undo.addActionListener((new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			try {
+				undomanager.undo();
+			} catch (Exception ex) {
+			}
+		}
+	}));
+	redo.addActionListener(new ActionListener() {
+		public void actionPerformed(ActionEvent e) {
+			try {
+				undomanager.redo();
+			} catch (Exception ex) {
+			}
+		}
+	});
+	txtarea.getDocument().addUndoableEditListener(new UndoableEditListener() {
+		public void undoableEditHappened(UndoableEditEvent e) {
+			undomanager.addEdit(e.getEdit());
+		}
+	});
+	   txtarea.getActionMap().put("Undo",new AbstractAction("Undo") {
+	           public void actionPerformed(ActionEvent e) {
+	               try {
+	                   if (undomanager.canUndo()) {
+	                       undomanager.undo();
+	                   }
+	               } catch (CannotUndoException ex) {
+	               }
+	           }
+	      });
+
+	   txtarea.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");
+	   txtarea.getActionMap().put("Redo",new AbstractAction("Redo") {
+	           public void actionPerformed(ActionEvent e) {
+	               try {
+	                   if (undomanager.canRedo()) {
+	                       undomanager.redo();
+	                   }
+	               } catch (CannotRedoException ex) {
+	               }
+	           }
+	       });
+	   txtarea.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");
+
+
+	menu.add(close);
+	file.add(newfile);file.addSeparator();file.add(openfile);
+	file.addSeparator();file.add(printfile);file.addSeparator();file.add(savefile);
+	file.addSeparator();view.add(view_panel);view.addSeparator();view.add(hide_panel);
+	file.add(view);file.addSeparator();file.add(saveas);edit.add(cut);edit.addSeparator();
+	edit.add(copy);edit.addSeparator();edit.add(paste);edit.addSeparator();edit.add(undo);
+	edit.addSeparator();edit.add(redo);
+
+	panel=new JPanel();
+	panel.setBackground(Color.PINK);
+	panel.setSize(100,100);
+	frame.getContentPane().add(panel,BorderLayout.SOUTH);
+
+	bold=new JButton("Bold");italics=new JButton("Italics");underline=new JButton("Underline");
+	bold.setBackground(new java.awt.Color(100,140,255));
+	bold.addActionListener(this);
+	italics.setBackground(new java.awt.Color(100,140,255));
+	underline.setBackground(new java.awt.Color(100,140,255));
+	bold.setFont(new Font("Serif", Font.BOLD, 15));
+	italics.setFont(new Font("Serif", Font.ITALIC, 15));
+	underline.setFont(new Font("Serif", Font.PLAIN, 15));
+
+	bold.addActionListener(new StyledEditorKit.BoldAction());
+	italics.addActionListener(new StyledEditorKit.ItalicAction());
+	underline.addActionListener(new StyledEditorKit.UnderlineAction());
+
+	panel.add(bold);panel.add(italics);panel.add(underline);
+	}
+
+	 public void actionPerformed(ActionEvent e) 
+	    { 
+	        String s = e.getActionCommand(); 
+
+	        if (s.equals("Cut")) { 
+	            txtarea.cut(); 
+	        } 
+	        else if (s.equals("Copy")) { 
+	            txtarea.copy(); 
+	        } 
+	        else if (s.equals("Paste")) { 
+	            txtarea.paste(); 
+	        } 
+
+	        else if (s.equals("New")) {
+	        	 Object stringArray[] = { "Sure", "No. I'd like to change/save" };
+	        	 int response=JOptionPane.showOptionDialog(frame, "You're about to delete this text. Continue?", "Select an Option",
+	        	        JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,null, stringArray,stringArray[0]);
+
+	        	 if (response == JOptionPane.YES_OPTION) {
+	        		 txtarea.setText(""); 
+	        	    } 
+	        }
+	        else if (s.equals("Exit")) { 
+	        	Object stringArray[] = { "Sure", "No. I'd like to change/save" };
+	        	 int response=JOptionPane.showOptionDialog(frame, "You're about to exit. Continue?", "Select an Option",
+	        	        JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,null, stringArray,stringArray[0]);
+
+	        	 if (response == JOptionPane.YES_OPTION) {
+	        		 frame.setVisible(false);
+	        	    } 
+
+	        } 
+	        else if (s.equals("View")) {
+	        		panel.setVisible(true);
+	        }
+	        else if (s.equals("Hide")) {
+        		panel.setVisible(false);
+            }
+
+	        else if (s.equals("Open")) 
+	        {  
+	            JFileChooser j = new JFileChooser("/home/aishwarya"); 
+	            int r = j.showOpenDialog(null); 
+	            // If the user selects a file 
+	            if (r == JFileChooser.APPROVE_OPTION) { 
+	                // Set the label to the path of the selected directory 
+	                filename=j.getSelectedFile().getAbsolutePath();
+	                File fi = new File(filename); 
+	                try { 
+	                    String s1 = "", sl = ""; 
+	                    BufferedReader br = new BufferedReader(new FileReader(fi)); 
+	                    sl = br.readLine(); 
+	                    while ((s1 = br.readLine()) != null) { 
+	                        sl = sl + "\n" + s1; 
+	                    } 
+	                    txtarea.setText(sl); 
+	                } 
+	                catch (Exception evt) { 
+	                    JOptionPane.showMessageDialog(frame, evt.getMessage()); 
+	                } 
+	            }
+	        } 
+	        else if (s.equals("SaveAs")) { 
+	            saveFile(null); 
+	        } 
+	        else if(s.equals("Save")) {
+            	saveFile(filename);
+            }
+	        else if (s.equals("Print")) { 
+	            try { 
+	                txtarea.print(); 
+	            } 
+	            catch (Exception evt) { 
+	                JOptionPane.showMessageDialog(frame, evt.getMessage()); 
+	            } 
+	        } 
+
+	    }
+	  private void saveFile(String name) 
+	  {
+		    if (name == null) {  
+		    	// get filename from user
+		      JFileChooser fc = new JFileChooser();
+		      if (fc.showSaveDialog(null) != JFileChooser.CANCEL_OPTION)
+		        name = fc.getSelectedFile().getAbsolutePath();
+		    }
+		    if (name != null) {  
+		      try {
+		        Formatter out = new Formatter(new File(name));  
+		        filename = name;
+		        out.format("%s", txtarea.getText());
+		        out.close();
+		        JOptionPane.showMessageDialog(null, "Saved to " + filename,
+		          "Save File", JOptionPane.PLAIN_MESSAGE);
+		      }
+		      catch (FileNotFoundException e) {
+		        JOptionPane.showMessageDialog(null, "Cannot write to file: " + name,
+		          "Error", JOptionPane.ERROR_MESSAGE);
+		      }
+		    }
+	  }
+
+public static void main(String[] args)
+{
+
+	SimpleTextEditor window = new SimpleTextEditor();
+	window.frame.setLocationRelativeTo(null);
+	window.frame.setVisible(true);
+}
+}