/// <summary>
/// Returns image content from clipboard as ImageContent object.
/// </summary>
private ImageContent getImageContentFromClipboard()
{
ImageContent contentToReturn = new ImageContent();
contentToReturn.index = view.ImageRowCount + 1;
contentToReturn.image = Clipboard.GetImage();
contentToReturn.time = System.DateTime.Now.ToShortTimeString();
return(contentToReturn);
}
public static EncryptedImageContent EncryptImageContent(ImageContent unencryptedContent, string password)
{
EncryptedImageContent contentToReturn = new EncryptedImageContent();
contentToReturn.index = unencryptedContent.index;
contentToReturn.encryptedImage =
StringCipher.Encrypt(ImageConversion.ImageToBase64(unencryptedContent.image, ImageFormat.Png), password);
contentToReturn.time = StringCipher.Encrypt(unencryptedContent.time, password);
return(contentToReturn);
}
public static ImageContent DecryptImageContent(EncryptedImageContent encryptedContent, string password)
{
ImageContent contentToReturn = new ImageContent();
contentToReturn.index = encryptedContent.index;
contentToReturn.image =
ImageConversion.Base64ToImage(StringCipher.Decrypt(encryptedContent.encryptedImage, password));
contentToReturn.time = StringCipher.Decrypt(encryptedContent.time, password);
return(contentToReturn);
}
public void SetImageContentAt(ImageContent contentToAdd)
{
try {
DataGridViewRow row = imageDataGrid.Rows[contentToAdd.index - 1];
row.Cells[0].Value = contentToAdd.index;
row.Cells[1].Value = contentToAdd.image;
row.Cells[2].Value = contentToAdd.time;
} catch (ArgumentOutOfRangeException) {
MessageBox.Show("Error, unable to update content.",
"Clipboarder", MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
}
public List <ImageContent> GetAllImageContent()
{
List <ImageContent> returnValues = new List <ImageContent>();
for (int i = 0; i < imageDataGrid.RowCount; i++)
{
ImageContent contentToAdd = new ImageContent();
contentToAdd.index = (int)imageDataGrid.Rows[i].Cells[0].Value;
contentToAdd.image = (Image)imageDataGrid.Rows[i].Cells[1].Value;
contentToAdd.time = (string)imageDataGrid.Rows[i].Cells[2].Value;
returnValues.Add(contentToAdd);
}
return(returnValues);
}
public void AddNewImageRow(ImageContent contentToAdd)
{
DataGridViewRow NewRow = new DataGridViewRow();
NewRow.CreateCells(imageDataGrid);
NewRow.Cells[0].Value = contentToAdd.index;
NewRow.Cells[1].Value = contentToAdd.image;
NewRow.Cells[2].Value = contentToAdd.time;
//Adjusts height of a row
NewRow.Height = contentToAdd.image.Height;
imageDataGrid.Rows.Insert(imageDataGrid.RowCount, NewRow);
MainTabControl.SelectedIndex = 1;
}
/// <summary>
/// Import and populates CLipboarder grid with entries from database
/// using DatabaseOperations, DatabaseReadWrite and User class
/// </summary>
private void ImportAndDisplayEntries()
{
if (!File.Exists(Path.Combine(Application.StartupPath, "contents.db")))
{
MessageBox.Show("No content to load." + "\n\n" + "Use Menu > Save Content to save entries.",
"Clipboarder", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
// Creates DatabaseOperations object to perform operations on specified database
DatabaseOperations dbOperations = new DatabaseOperations();
// Connects to database and opens connection
try {
dbOperations = new DatabaseOperations();
dbOperations.ConnectDatabase(databaseName);
dbOperations.OpenConnection();
} catch (Exception ex) {
MessageBox.Show("Error connecting database, database does not exists or is unreachable."
+ ex.Message + "\n\nOperation aborted.\n", "Clipboarder Error",
MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
User user = new User(dbOperations);
user.GetCurrentUserID();
// Shows AskPasswordDecrypt form to ask user for password,
// this call also passes hashed password from the database
// to inform user for incorrect password.
AskPasswordDecrypt askPassword = new AskPasswordDecrypt(this, user.GetUserPassword());
DialogResult result = askPassword.ShowDialog();
// If DialogResult.OK == true then AskPasswordDialog will provide password to
// password field in MainFormPresenter instance earlier passed in constructor
if (result != DialogResult.OK)
{
dbOperations.CloseConnection();
return;
}
// Checks equality of password provided and stored
if (!user.CurrentUserHasID())
{
MessageBox.Show("Content for current user doesn't exists.\n\nOperation aborted.\n",
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
dbOperations.CloseConnection();
return;
}
else
{
view.ClearAll();
DatabaseReadWrite dbContent = new DatabaseReadWrite(dbOperations, user);
try {
view.status = "Reading text from database";
List <EncryptedTextContent> encryptedList = dbContent.GetTextData();
List <TextContent> outputList = new List <TextContent>();
// Resets progress
view.ProgressVisibility = true;
view.TaskProgress = 0;
// Decrypts and adds text content to textDataGrid
encryptedList.ForEach((encryptedContent) => {
view.TaskProgress = (100 / encryptedList.Count) * encryptedContent.index;
TextContent contentToAdd =
ContentEncryption.DecryptTextContent(encryptedContent, password);
view.AddNewTextRow(contentToAdd);
});
view.TaskProgress = 0;
} catch (Exception ex) {
MessageBox.Show("Error filling table with values.\n\n\nOperation aborted." + Environment.NewLine,
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
try {
view.status = "Reading images from database.";
List <EncryptedImageContent> encryptedList = dbContent.GetImageData();
List <ImageContent> outputList = new List <ImageContent>();
//progress bar values
view.TaskProgress = 0;
view.ProgressVisibility = true;
// Decrypts image content
encryptedList.ForEach(encryptedContent => {
view.TaskProgress = (100 / encryptedList.Count) * encryptedContent.index;
ImageContent contentToAdd =
ContentEncryption.DecryptImageContent(encryptedContent, password);
view.AddNewImageRow(contentToAdd);
});
view.TaskProgress = 0;
} catch (Exception) {
MessageBox.Show("Error filling table with values.\n\n\nOperation aborted.\n",
"Clipboarder Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
view.status = "Error";
dbOperations.CloseConnection();
return;
}
}
view.status = "Imported successfully";
view.ProgressVisibility = false;
dbOperations.CloseConnection();
} // Else statement for check on file existence
password = "";
}
