/**
* Tests if the Combo value is empty. If so, it adds an error color to the background of the cell.
*
* @param combo the combo to validate
* @param validSelectionIndex the first item that is a "valid" selection
* @return boolean
*/
public static boolean validateCombo(Combo combo, int validSelectionIndex) {
int selectionIndex = Math.max(validSelectionIndex, 0);
String text = combo.getText();
if (text == null || text.length() == 0 || combo.getSelectionIndex() < selectionIndex) {
combo.setBackground(backgroundErrorColor);
return false;
}
combo.setBackground(null);
return true;
}
private static void createCombo(final Group group) {
group.setLayout(new GridLayout(2, false));
group.setText("Combo widget");
final Label lbl0 = new Label(group, SWT.NONE);
lbl0.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl0.setText("No prompt :");
final Combo combo0 = new Combo(group, SWT.BORDER);
combo0.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
final Label lbl1 = new Label(group, SWT.NONE);
lbl1.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl1.setText("Simple text prompt :");
final Combo combo1 = new Combo(group, SWT.BORDER);
combo1.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
PromptSupport.setPrompt("Type anything you want", combo1);
final Label lbl2 = new Label(group, SWT.NONE);
lbl2.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl2.setText("Other style (bold) :");
final Combo combo2 = new Combo(group, SWT.BORDER);
combo2.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
PromptSupport.setPrompt("Type anything you want in bold", combo2);
PromptSupport.setFontStyle(SWT.BOLD, combo2);
final Label lbl3 = new Label(group, SWT.NONE);
lbl3.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl3.setText("Behaviour highlight :");
final Combo combo3 = new Combo(group, SWT.BORDER);
combo3.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
PromptSupport.setPrompt("Type anything you want", combo3);
PromptSupport.setFocusBehavior(FocusBehavior.HIGHLIGHT_PROMPT, combo3);
final Label lbl4 = new Label(group, SWT.NONE);
lbl4.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl4.setText("Change colors :");
final Combo combo4 = new Combo(group, SWT.BORDER);
combo4.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
PromptSupport.setPrompt("Type anything you want", combo4);
PromptSupport.setForeground(combo4.getDisplay().getSystemColor(SWT.COLOR_YELLOW), combo4);
PromptSupport.setBackground(combo4.getDisplay().getSystemColor(SWT.COLOR_BLACK), combo4);
final Label lbl5 = new Label(group, SWT.NONE);
lbl5.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, false, false));
lbl5.setText("Change when widget is initialized :");
final Combo combo5 = new Combo(group, SWT.BORDER);
combo5.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
combo5.setText("Remove what is typed...");
combo5.setBackground(combo4.getDisplay().getSystemColor(SWT.COLOR_BLACK));
combo5.setForeground(combo4.getDisplay().getSystemColor(SWT.COLOR_YELLOW));
PromptSupport.setPrompt("Type anything you want", combo5);
PromptSupport.setForeground(combo4.getDisplay().getSystemColor(SWT.COLOR_DARK_BLUE), combo5);
PromptSupport.setBackground(combo4.getDisplay().getSystemColor(SWT.COLOR_WHITE), combo5);
}
/** Initializes the GUI. */
private void initGUI() {
try {
this.setSize(731, 385);
this.setBackground(SWTResourceManager.getColor(219, 219, 219));
FormLayout thisLayout = new FormLayout();
this.setLayout(thisLayout);
this.setOrientation(SWT.HORIZONTAL);
this.setToolTipText("MKD- Image SteganoGraphy");
{
Enter = new Label(this, SWT.NONE);
FormData EnterLData = new FormData();
EnterLData.left = new FormAttachment(0, 1000, 266);
EnterLData.top = new FormAttachment(0, 1000, 140);
EnterLData.width = 43;
EnterLData.height = 15;
Enter.setLayoutData(EnterLData);
Enter.setText("Enter");
Enter.setVisible(false);
}
{
GenPubPara = new Button(this, SWT.PUSH | SWT.CENTER);
FormData GenPubParaLData = new FormData();
GenPubParaLData.left = new FormAttachment(0, 1000, 174);
GenPubParaLData.top = new FormAttachment(0, 1000, 142);
GenPubParaLData.width = 132;
GenPubParaLData.height = 25;
GenPubPara.setLayoutData(GenPubParaLData);
GenPubPara.setText("Generate Public Values");
GenPubPara.setVisible(false);
GenPubPara.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
Random prng = new SecureRandom();
BigInteger q = BigInteger.probablePrime(32, prng);
System.out.println("" + q);
QValue.setText(q.toString());
// code for generating alpha
BigInteger alpha;
primitiveRoot pr = new primitiveRoot();
for (alpha = BigInteger.valueOf(2);
alpha.compareTo(q) > 0;
alpha = alpha.add(BigInteger.ONE)) {
if (pr.isPrimitive(q, alpha)) break;
}
System.out.println("" + alpha);
AlphaValue.setText(alpha.toString());
}
});
}
{
FormData PubKeyLData = new FormData();
PubKeyLData.left = new FormAttachment(0, 1000, 326);
PubKeyLData.top = new FormAttachment(0, 1000, 188);
PubKeyLData.width = 121;
PubKeyLData.height = 15;
PubKey = new Text(this, SWT.NONE);
PubKey.setLayoutData(PubKeyLData);
PubKey.setVisible(false);
}
{
PUBKey = new Label(this, SWT.NONE);
FormData PUBKeyLData = new FormData();
PUBKeyLData.left = new FormAttachment(0, 1000, 217);
PUBKeyLData.top = new FormAttachment(0, 1000, 187);
PUBKeyLData.width = 97;
PUBKeyLData.height = 15;
PUBKey.setLayoutData(PUBKeyLData);
PUBKey.setText("Public Key is");
PUBKey.setVisible(false);
}
{
FormData PKeyLData = new FormData();
PKeyLData.left = new FormAttachment(0, 1000, 326);
PKeyLData.top = new FormAttachment(0, 1000, 166);
PKeyLData.width = 121;
PKeyLData.height = 15;
PKey = new Text(this, SWT.NONE);
PKey.setLayoutData(PKeyLData);
PKey.setVisible(false);
PKey.addModifyListener(
new ModifyListener() {
@Override
public void modifyText(ModifyEvent arg0) {
// TODO Auto-generated method stub
BigInteger alpha = new BigInteger(AlphaValue.getText());
BigInteger xa = new BigInteger(PKey.getText());
BigInteger q = new BigInteger(QValue.getText());
BigInteger ya = alpha.modPow(xa, q);
System.out.println("Y a is " + ya);
PubKey.setText(ya.toString());
PubKey.setEditable(false);
}
});
/*Adapter() {
public void widgetSelected(SelectionEvent e){
BigInteger alpha=new BigInteger(AlphaValue.getText());
BigInteger xa=new BigInteger(PKey.getText());
BigInteger q=new BigInteger(QValue.getText());
BigInteger ya = alpha.modPow(xa, q);
System.out.println("Y a is "+ya);
PubKey.setText(ya.toString());
PubKey.setEditable(false);
}});*/
}
{
PKLabel = new Label(this, SWT.NONE);
FormData PKLabelLData = new FormData();
PKLabelLData.left = new FormAttachment(0, 1000, 217);
PKLabelLData.top = new FormAttachment(0, 1000, 166);
PKLabelLData.width = 97;
PKLabelLData.height = 15;
PKLabel.setLayoutData(PKLabelLData);
PKLabel.setText("Enter Private Key");
PKLabel.setVisible(false);
}
{
FormData AlphaValueLData = new FormData();
AlphaValueLData.left = new FormAttachment(0, 1000, 504);
AlphaValueLData.top = new FormAttachment(0, 1000, 138);
AlphaValueLData.width = 64;
AlphaValueLData.height = 15;
AlphaValue = new Text(this, SWT.NONE);
AlphaValue.setLayoutData(AlphaValueLData);
AlphaValue.setVisible(false);
}
{
FormData QValueLData = new FormData();
QValueLData.left = new FormAttachment(0, 1000, 340);
QValueLData.top = new FormAttachment(0, 1000, 137);
QValueLData.width = 107;
QValueLData.height = 15;
QValue = new Text(this, SWT.NONE);
QValue.setLayoutData(QValueLData);
QValue.setVisible(false);
}
{
Alpha = new Label(this, SWT.NONE);
FormData AlphaLData = new FormData();
AlphaLData.left = new FormAttachment(0, 1000, 465);
AlphaLData.top = new FormAttachment(0, 1000, 138);
AlphaLData.width = 40;
AlphaLData.height = 15;
Alpha.setLayoutData(AlphaLData);
Alpha.setText("Alpha");
Alpha.setVisible(false);
}
{
Q = new Label(this, SWT.NONE);
FormData QLData = new FormData();
QLData.left = new FormAttachment(0, 1000, 328);
QLData.top = new FormAttachment(0, 1000, 138);
QLData.width = 12;
QLData.height = 15;
Q.setLayoutData(QLData);
Q.setText("Q");
Q.setVisible(false);
}
{
group1 = new Group(this, SWT.NONE);
GridLayout group1Layout = new GridLayout();
group1Layout.makeColumnsEqualWidth = true;
group1.setLayout(group1Layout);
FormData group1LData = new FormData();
group1LData.left = new FormAttachment(0, 1000, 149);
group1LData.top = new FormAttachment(0, 1000, 127);
group1LData.width = 429;
group1LData.height = 64;
group1.setLayoutData(group1LData);
group1.setText("Diffie-Hellman Key Exchange");
group1.setVisible(false);
}
{
button1 = new Button(this, SWT.PUSH | SWT.CENTER);
FormData button1LData = new FormData();
button1LData.width = 100;
button1LData.height = 32;
button1LData.right = new FormAttachment(568, 1000, 0);
button1LData.bottom = new FormAttachment(650, 1000, 0);
button1LData.top = new FormAttachment(567, 1000, 0);
button1LData.left = new FormAttachment(431, 1000, 0);
button1.setLayoutData(button1LData);
button1.setText("Proceed");
// button1.setBackground(SWTResourceManager.getColor(128, 0, 255));
button1.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
String s = new String(Option.getText());
String s1 = new String("Encrypt the Data into an Image");
String s2 = new String("Decrypt the Message from an Image");
if (s.equals(s1)) {
xa = PKey.getText();
q = QValue.getText();
Display display = Display.getDefault();
Shell shell = new Shell(display);
EncryptWindow inst = new EncryptWindow(shell, SWT.NULL);
Point size = inst.getSize();
// shell.setLayout(new FillLayout());
shell.layout();
new Label(shell, SWT.NONE).setText("Operation:");
final Label returnVal = new Label(shell, SWT.NONE);
// returnVal.setLayoutData(new FillLayout(SWT.NULL));
returnVal.setText("");
returnVal.setText(Option.getText());
if (size.x == 0 && size.y == 0) {
inst.pack();
shell.pack();
} else {
Rectangle shellBounds = shell.computeTrim(0, 0, size.x, size.y);
shell.setSize(shellBounds.width, shellBounds.height);
}
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
} else if (s.equals(s2)) {
xa = PKey.getText();
q = QValue.getText();
Display display = Display.getDefault();
Shell shell = new Shell(display);
DecryptWindow inst = new DecryptWindow(shell, SWT.NULL);
Point size = inst.getSize();
// shell.setLayout(new FillLayout());
shell.layout();
new Label(shell, SWT.NONE).setText("Operation:");
final Label returnVal = new Label(shell, SWT.NONE);
// returnVal.setLayoutData(new FillLayout(SWT.NULL));
returnVal.setText("");
returnVal.setText(Option.getText());
if (size.x == 0 && size.y == 0) {
inst.pack();
shell.pack();
} else {
Rectangle shellBounds = shell.computeTrim(0, 0, size.x, size.y);
shell.setSize(shellBounds.width, shellBounds.height);
}
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
}
}
});
}
{
Label2 = new Label(this, SWT.NONE);
FormData Label2LData = new FormData();
Label2LData.width = 443;
Label2LData.height = 49;
Label2LData.bottom = new FormAttachment(144, 1000, 0);
Label2LData.right = new FormAttachment(811, 1000, 0);
Label2LData.top = new FormAttachment(16, 1000, 0);
Label2LData.left = new FormAttachment(205, 1000, 0);
Label2.setLayoutData(Label2LData);
Label2.setText("V's Image Steganography ");
Label2.setFont(SWTResourceManager.getFont("Lucida Handwriting", 22, 1, false, false));
Label2.setAlignment(SWT.CENTER);
Label2.setBackground(SWTResourceManager.getColor(219, 219, 219));
}
{
Label1 = new Label(this, SWT.NONE);
FormData Label1LData = new FormData();
Label1LData.width = 234;
Label1LData.height = 22;
Label1LData.left = new FormAttachment(204, 1000, 0);
Label1LData.right = new FormAttachment(524, 1000, 0);
Label1LData.bottom = new FormAttachment(232, 1000, 0);
Label1LData.top = new FormAttachment(175, 1000, 0);
Label1.setLayoutData(Label1LData);
Label1.setText("What you want to do...?");
Label1.setBackground(SWTResourceManager.getColor(219, 219, 219));
}
{
Option = new Combo(this, SWT.NONE);
FormLayout OptionLayout = new FormLayout();
Option.setLayout(OptionLayout);
FormData OptionLData = new FormData();
OptionLData.left = new FormAttachment(204, 1000, 0);
OptionLData.top = new FormAttachment(232, 1000, 0);
OptionLData.width = 408;
OptionLData.height = 19;
OptionLData.right = new FormAttachment(799, 1000, 0);
OptionLData.bottom = new FormAttachment(287, 1000, 0);
Option.setLayoutData(OptionLData);
Option.setText("Select Option");
Option.setBackground(SWTResourceManager.getColor(192, 192, 192));
Option.setToolTipText("\r\n");
Option.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
if (Option.getText().equals("Encrypt the Data into an Image")) {
xa = PKey.getText();
q = QValue.getText();
group1.setVisible(true);
PubKey.setVisible(true);
PUBKey.setVisible(true);
PKey.setVisible(true);
PKLabel.setVisible(true);
AlphaValue.setVisible(true);
QValue.setVisible(true);
Alpha.setVisible(true);
Q.setVisible(true);
GenPubPara.setVisible(true);
Enter.setVisible(false);
}
if (Option.getText().equals("Decrypt the Message from an Image")) {
/*PubKey.setText("");
PKey.setText("null");
QValue.setText("null");
AlphaValue.setText("0");*/
group1.setVisible(true);
PubKey.setVisible(true);
PUBKey.setVisible(true);
PKey.setVisible(true);
PKLabel.setVisible(true);
AlphaValue.setVisible(true);
QValue.setVisible(true);
Alpha.setVisible(true);
Q.setVisible(true);
Enter.setVisible(true);
GenPubPara.setVisible(false);
}
} // Encrypt e=new Encrypt();
});
Option.add("Encrypt the Data into an Image");
Option.add("Decrypt the Message from an Image");
}
{
label1 = new Label(this, SWT.NONE);
FormData label1LData = new FormData();
label1LData.left = new FormAttachment(0, 1000, 149);
label1LData.top = new FormAttachment(0, 1000, 285);
label1LData.width = 429;
label1LData.height = 35;
label1.setLayoutData(label1LData);
label1.setText(
" Copyright 2012., All Rights Reserved.,\r\n Vinaykumar M Kolli & Vaishakh B N ");
label1.setBackground(SWTResourceManager.getColor(192, 192, 192));
}
{
menu1 = new Menu(getShell(), SWT.BAR);
getShell().setMenuBar(menu1);
/*{
fileMenuItem = new MenuItem(menu1, SWT.CASCADE);
fileMenuItem.setText("File");
{
fileMenu = new Menu(fileMenuItem);
{
openFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
openFileMenuItem.setText("Open");
}
{
newFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
newFileMenuItem.setText("New");
}
{
saveFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
saveFileMenuItem.setText("Save");
}
{
closeFileMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
closeFileMenuItem.setText("Close");
}
{
exitMenuItem = new MenuItem(fileMenu, SWT.CASCADE);
exitMenuItem.setText("Exit");
}
fileMenuItem.setMenu(fileMenu);
}
}*/
{
helpMenuItem = new MenuItem(menu1, SWT.CASCADE);
helpMenuItem.setText("Help");
{
helpMenu = new Menu(helpMenuItem);
{
contentsMenuItem = new MenuItem(helpMenu, SWT.CASCADE);
contentsMenuItem.setText("Help Contents");
contentsMenuItem.addSelectionListener(new SelectionAdapter() {});
}
{
aboutMenuItem = new MenuItem(helpMenu, SWT.CASCADE);
aboutMenuItem.setText("About");
aboutMenuItem.addSelectionListener(
new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
Display display = Display.getDefault();
Shell shell = new Shell(display);
HelpPage help = new HelpPage(shell, SWT.NULL);
Point size = help.getSize();
// shell.setLayout(new FillLayout());
shell.layout();
// new Label(shell, SWT.NONE).setText("Operation:");
// final Label returnVal = new Label(shell, SWT.NONE);
// returnVal.setLayoutData(new FillLayout(SWT.NULL));
// returnVal.setText("");
// returnVal.setText(Option.getText());
if (size.x == 0 && size.y == 0) {
help.pack();
shell.pack();
} else {
Rectangle shellBounds = shell.computeTrim(0, 0, size.x, size.y);
shell.setSize(shellBounds.width, shellBounds.height);
}
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
}
});
}
helpMenuItem.setMenu(helpMenu);
}
}
}
this.layout();
} catch (Exception e) {
e.printStackTrace();
}
}
@Test
public void testPreserveValues() {
Combo combo = new Combo(shell, SWT.READ_ONLY);
Fixture.markInitialized(display);
// Test preserving a combo with no items and (naturally) no selection
Fixture.preserveWidgets();
WidgetAdapter adapter = WidgetUtil.getAdapter(combo);
String[] items = ((String[]) adapter.getPreserved(PROP_ITEMS));
assertEquals(0, items.length);
assertEquals(new Integer(-1), adapter.getPreserved(PROP_SELECTION_INDEX));
assertNull(adapter.getPreserved(ComboLCA.PROP_TEXT_LIMIT));
Object visibleItemCount = adapter.getPreserved(ComboLCA.PROP_VISIBLE_ITEM_COUNT);
assertEquals(new Integer(combo.getVisibleItemCount()), visibleItemCount);
assertEquals(Boolean.FALSE, adapter.getPreserved(ComboLCA.PROP_EDITABLE));
assertEquals(new Point(0, 0), adapter.getPreserved(ComboLCA.PROP_SELECTION));
// Test preserving combo with items were one is selected
Fixture.clearPreserved();
combo.add("item 1");
combo.add("item 2");
combo.select(1);
combo.setListVisible(true);
SelectionListener selectionListener = new SelectionAdapter() {};
combo.addSelectionListener(selectionListener);
combo.addModifyListener(
new ModifyListener() {
public void modifyText(ModifyEvent event) {}
});
Fixture.preserveWidgets();
adapter = WidgetUtil.getAdapter(combo);
items = ((String[]) adapter.getPreserved(PROP_ITEMS));
assertEquals(2, items.length);
assertEquals("item 1", items[0]);
assertEquals("item 2", items[1]);
assertEquals(new Integer(1), adapter.getPreserved(PROP_SELECTION_INDEX));
visibleItemCount = adapter.getPreserved(ComboLCA.PROP_VISIBLE_ITEM_COUNT);
assertEquals(new Integer(combo.getVisibleItemCount()), visibleItemCount);
assertEquals("item 2", adapter.getPreserved(Props.TEXT));
assertEquals(Boolean.FALSE, adapter.getPreserved(ComboLCA.PROP_EDITABLE));
Fixture.clearPreserved();
// foreground background font
Color background = new Color(display, 122, 33, 203);
combo.setBackground(background);
Color foreground = new Color(display, 211, 178, 211);
combo.setForeground(foreground);
Font font = new Font(display, "font", 12, SWT.BOLD);
combo.setFont(font);
Fixture.preserveWidgets();
adapter = WidgetUtil.getAdapter(combo);
assertEquals(background, adapter.getPreserved(Props.BACKGROUND));
assertEquals(foreground, adapter.getPreserved(Props.FOREGROUND));
assertEquals(font, adapter.getPreserved(Props.FONT));
Fixture.clearPreserved();
// tooltiptext
Fixture.preserveWidgets();
adapter = WidgetUtil.getAdapter(combo);
assertEquals(null, combo.getToolTipText());
Fixture.clearPreserved();
combo.setToolTipText("some text");
Fixture.preserveWidgets();
adapter = WidgetUtil.getAdapter(combo);
assertEquals("some text", combo.getToolTipText());
Fixture.clearPreserved();
}