d = new Display();
s = new Shell(d, SWT.CLOSE );
s.setSize(500,500);
s.setImage(new Image(d, "c:\\icons\\JavaCup.ico"));
s.setText("SWT Text Editor");
final ToolBar bar = new ToolBar(s,SWT.HORIZONTAL);
final Text t = new Text(s, SWT.MULTI | SWT.V_SCROLL |
SWT.H_SCROLL | SWT.WRAP | SWT.BORDER);
// create images for toolbar buttons
final Image saveIcon = new Image(d, "c:\\icons\\save.jpg");
final Image openIcon = new Image(d, "c:\\icons\\open.jpg");
final Image childIcon = new Image(d, "c:\\icons\\userH.ico");
final Image cutIcon = new Image(d, "c:\\icons\\cut.jpg");
final Image copyIcon = new Image(d, "c:\\icons\\copy.jpg");
final Image pasteIcon = new Image(d, "c:\\icons\\paste.jpg");
//create ToolBar and ToolItems
final ToolItem openToolItem = new ToolItem(bar, SWT.PUSH);
final ToolItem saveToolItem = new ToolItem(bar, SWT.PUSH);
final ToolItem sep1 = new ToolItem(bar, SWT.SEPARATOR);
final ToolItem cutToolItem = new ToolItem(bar, SWT.PUSH);
final ToolItem copyToolItem = new ToolItem(bar, SWT.PUSH);
final ToolItem pasteToolItem = new ToolItem(bar, SWT.PUSH);
// create the menu system
final Menu m = new Menu(s,SWT.BAR);
final MenuItem file = new MenuItem(m, SWT.CASCADE);
final Menu filemenu = new Menu(s, SWT.DROP_DOWN);
final MenuItem openMenuItem = new MenuItem(filemenu, SWT.PUSH);
final MenuItem saveMenuItem = new MenuItem(filemenu, SWT.PUSH);
final MenuItem separator = new MenuItem(filemenu, SWT.SEPARATOR);
final MenuItem exitMenuItem = new MenuItem(filemenu, SWT.PUSH);
final MenuItem edit = new MenuItem(m, SWT.CASCADE);
final Menu editmenu = new Menu(s, SWT.DROP_DOWN);
final MenuItem cutMenuItem = new MenuItem(editmenu, SWT.PUSH);
final MenuItem copyMenuItem = new MenuItem(editmenu, SWT.PUSH);
final MenuItem pasteMenuItem = new MenuItem(editmenu, SWT.PUSH);
final MenuItem help = new MenuItem(m, SWT.CASCADE);
final Menu helpmenu = new Menu(s, SWT.DROP_DOWN);
final MenuItem aboutMenuItem = new MenuItem(helpmenu, SWT.PUSH);
//create reusable named inner classes for SelectionListeners
class Open extends SelectionAdapter
{
public void widgetSelected(SelectionEvent event) {
FileDialog fileDialog = new FileDialog(s, SWT.OPEN);
fileDialog.setText("Open");
fileDialog.setFilterPath("C:/");
String[] filterExt = {"*.txt", "*.*"};
fileDialog.setFilterExtensions(filterExt);
String selected = fileDialog.open();
if (selected==null)
return;
// code here to open the file and display
FileReader file = null;
try {
file = new FileReader(selected);
}
catch (FileNotFoundException e) {
MessageBox messageBox = new MessageBox(s, SWT.ICON_ERROR
| SWT.OK );
messageBox.setMessage("Could not open file.");
messageBox.setText("Error");
messageBox.open();
return;
}
BufferedReader fileInput = new BufferedReader(file);
String text = null;
StringBuffer sb = new StringBuffer();
try {
do{
if(text!=null)
sb.append(text);
}
while((text = fileInput.readLine())!=null);
}
catch (IOException e1) {
MessageBox messageBox = new MessageBox(s, SWT.ICON_ERROR
| SWT.OK );
messageBox.setMessage("Could not write to file.");
messageBox.setText("Error");
messageBox.open();
return;
}
t.setText(sb.toString());
}
}
class Save extends SelectionAdapter
{
public void widgetSelected(SelectionEvent event) {
FileDialog fileDialog = new FileDialog(s, SWT.SAVE);
fileDialog.setText("Save");
fileDialog.setFilterPath("C:/");
String[] filterExt = {"*.txt", "*.*"};
fileDialog.setFilterExtensions(filterExt);
String selected = fileDialog.open();
if(selected==null)
return;
File file = new File(selected);
try {
FileWriter fileWriter = new FileWriter( file );
fileWriter.write( t.getText() );
fileWriter.close();
} catch (IOException e) {
MessageBox messageBox = new MessageBox(s, SWT.ICON_ERROR
| SWT.OK );
messageBox.setMessage("File I/O Error.");
messageBox.setText("Error");
messageBox.open();
return;
}
}
}
class Cut extends SelectionAdapter
{
public void widgetSelected(SelectionEvent event) {
t.cut();
}
}
class Copy extends SelectionAdapter
{
public void widgetSelected(SelectionEvent event) {
t.copy();
}
}
class Paste extends SelectionAdapter
{
public void widgetSelected(SelectionEvent event) {
t.paste();
}
}
//set the size and location of the user interface widgets
bar.setSize(500,55);
bar.setLocation(10,0);
t.setBounds(0, 56, 490, 395);
//Configure the ToolBar
openToolItem.setImage(openIcon);
openToolItem.setText("Open");
openToolItem.setToolTipText("Open File");
saveToolItem.setImage(saveIcon);
saveToolItem.setText("Save");
saveToolItem.setToolTipText("Save File");
cutToolItem.setImage(cutIcon);
cutToolItem.setText("Cut");
cutToolItem.setToolTipText("Cut");
copyToolItem.setImage(copyIcon);
copyToolItem.setText("Copy");
copyToolItem.setToolTipText("Copy");
pasteToolItem.setImage(pasteIcon);
pasteToolItem.setText("Paste");
pasteToolItem.setToolTipText("Paste");
//add SelectionListeners to the toolbar buttons
openToolItem.addSelectionListener(new Open());
saveToolItem.addSelectionListener(new Save());
cutToolItem.addSelectionListener(new Cut());
copyToolItem.addSelectionListener(new Copy());
pasteToolItem.addSelectionListener(new Paste());
//Configure the menu items
file.setText("&File");
file.setMenu(filemenu);
openMenuItem.setText("&Open\tCTRL+O");
openMenuItem.setAccelerator(SWT.CTRL+'O");
saveMenuItem.setText("&Save\tCTRL+S");
saveMenuItem.setAccelerator(SWT.CTRL+'S");
exitMenuItem.setText("E&xit");
edit.setText("&Edit");
edit.setMenu(editmenu);
cutMenuItem.setText("&Cut");
copyMenuItem.setText("Co&py");
pasteMenuItem.setText("&Paste");
help.setText("&Help");
help.setMenu(helpmenu);
aboutMenuItem.setText("&About");
// add SelectionListeners for the menu items
openMenuItem.addSelectionListener(new Open());
saveMenuItem.addSelectionListener(new Save());
exitMenuItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
System.exit(0);
}
});
cutMenuItem.addSelectionListener(new Cut());
copyMenuItem.addSelectionListener(new Copy());
pasteMenuItem.addSelectionListener(new Paste());
aboutMenuItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
AboutDialog ad = new AboutDialog(s);
ad.open();
}
});
s.setMenuBar(m);
s.open();
while(!s.isDisposed()){
if(!d.readAndDispatch())
d.sleep();
}
d.dispose();
