// Show the image the is -1 in the imagesInLesson list
private void addLessonMediaPreviousButton_Click(object sender, EventArgs e)
{
if (mediaInLesson.Count > 1)
{
//Save the current image stuff
mediaStruct mediaToAdd = new mediaStruct();
mediaToAdd.Description = addLessonMediaDescription.Text;
mediaToAdd.Title = addLessonMediaTitle.Text;
mediaToAdd.Media = mediaInLesson[currentShownImageIndex].Media;
mediaInLesson.RemoveAt(currentShownImageIndex);
mediaInLesson.Insert(currentShownImageIndex, mediaToAdd);
if (0 > currentShownImageIndex - 1)
{
currentShownImageIndex = mediaInLesson.Count - 1;
}
else
{
currentShownImageIndex -= 1;
}
//Show that image
MemoryStream ms = new MemoryStream(mediaInLesson[currentShownImageIndex].Media);
addLessonMedia.Image = Image.FromStream(ms);
addLessonMediaTitle.Text = mediaInLesson[currentShownImageIndex].Title;
addLessonMediaDescription.Text = mediaInLesson[currentShownImageIndex].Description;
}
}
/**
* Forward (+1) through the images uploaded, but not saved currently
* */
private void addLessonMediaNextButton_Click(object sender, EventArgs e)
{
if (mediaInLesson.Count > 1)
{
//Save old media's title and description
//mediaInLesson[currentShownImageIndex].Title = addLessonMediaTitle.Text;
mediaStruct mediaToAdd = new mediaStruct();
mediaToAdd.Description = addLessonMediaDescription.Text;
mediaToAdd.Title = addLessonMediaTitle.Text;
mediaToAdd.Media = mediaInLesson[currentShownImageIndex].Media;
mediaInLesson.RemoveAt(currentShownImageIndex);
mediaInLesson.Insert(currentShownImageIndex, mediaToAdd);
if (mediaInLesson.Count == currentShownImageIndex + 1)
{
currentShownImageIndex = 0;
}
else
{
currentShownImageIndex += 1;
}
//Show that image, description, title
MemoryStream ms = new MemoryStream(mediaInLesson[currentShownImageIndex].Media);
addLessonMedia.Image = Image.FromStream(ms);
addLessonMediaTitle.Text = mediaInLesson[currentShownImageIndex].Title;
addLessonMediaDescription.Text = mediaInLesson[currentShownImageIndex].Description;
}
}
/**
* Check all the fields to see if valid and adds the lesson to the lesson table.
* Should also add to the MediaLesson table all of the Media
* */
private void addLessonUploadLessonButton_Click(object sender, EventArgs e)
{
if (addLessonLessonTitle.Text.Length < 1)
{
MessageBox.Show("No Title for the Lesson!");
}
else if (addLessonPrereq.Text.Length > 0 && !db.checkIfLessonTitleExists(addLessonPrereq.Text))
{
MessageBox.Show("That Pre-Req doesn't exist!");
}
else if (addLessonDifficulty.Value > 5 && addLessonDifficulty.Value < 0)
{
MessageBox.Show("The Difficulty must be between 0 and 5!");
}
else if (addLessonVisualRating.Value > 5 && addLessonVisualRating.Value < 0)
{
MessageBox.Show("The Visual Rating must be between 0 and 5!");
}
else if (addLessonAudioRating.Value > 5 && addLessonAudioRating.Value < 0)
{
MessageBox.Show("The Audio Rating must be between 0 and 5!");
}
else
{
if (addLessonMedia.Image != null)
{
mediaStruct oldMedia = new mediaStruct();
oldMedia.Description = addLessonMediaDescription.Text;
oldMedia.Media = mediaInLesson[currentShownImageIndex].Media;
oldMedia.Title = addLessonMediaTitle.Text;
mediaInLesson.RemoveAt(currentShownImageIndex);
mediaInLesson.Insert(currentShownImageIndex, oldMedia);
currentShownImageIndex = mediaInLesson.Count - 1;
}
int newLID = db.getAllLessonsCount() + 1;
String title = addLessonLessonTitle.Text;
int prereq = ((addLessonPrereq.Text.Length == 0) ? 0 : db.getLidFromTitle(addLessonPrereq.Text));
int difficulty = (int)addLessonDifficulty.Value;
Boolean markedTypo = false;
int contentV = (int)addLessonVisualRating.Value;
int contentA = (int)addLessonAudioRating.Value;
int contentO = 10 - (contentV + contentA);
String content = addLessonContent.Text;
// DO DB CALL TO CREATE!!!!
db.addLesson(newLID, title, prereq, difficulty, markedTypo, contentV, contentA, contentO, content);
// DO DB CALL TO CREATE MEDIA-LESSON!!!!
foreach (mediaStruct image in mediaInLesson)
{
//DB call to add to Lesson
db.addMediaLesson(newLID, image.Media, image.Title, image.Description);
}
MessageBox.Show("Successfully added a lesson! Press New Lesson to erase fields");
}
}
/**
* Add an image to the Lesson by openning up a windows explorer for them to look at
* */
private void addLessonMediaAddNewButton_Click(object sender, EventArgs e)
{
String imageLocation = "";
try {
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "jpg files(*.jpg)|*.jpg| png files(*.png)|*.png| All files(*.*)|*.*";
if (dialog.ShowDialog() == DialogResult.OK)
{
//This Works!!!
imageLocation = dialog.FileName;
//addLessonMedia.ImageLocation = imageLocation;
}
//Save old image
if (addLessonMedia.Image != null)
{
mediaStruct oldMedia = new mediaStruct();
oldMedia.Description = addLessonMediaDescription.Text;
oldMedia.Media = mediaInLesson[currentShownImageIndex].Media;
oldMedia.Title = addLessonMediaTitle.Text;
mediaInLesson.RemoveAt(currentShownImageIndex);
mediaInLesson.Insert(currentShownImageIndex, oldMedia);
currentShownImageIndex = mediaInLesson.Count - 1;
}
//Testing to byte[]
byte[] image = null;
FileStream stream = new FileStream(imageLocation, FileMode.Open, FileAccess.Read);
BinaryReader brs = new BinaryReader(stream);
image = brs.ReadBytes((int)stream.Length);
//Testing byte[] to image
MemoryStream ms = new MemoryStream(image);
addLessonMedia.Image = Image.FromStream(ms);
mediaStruct newMedia = new mediaStruct();
newMedia.Description = "";
newMedia.Media = image;
newMedia.Title = "";
mediaInLesson.Add(newMedia);
currentShownImageIndex++;
//currentShownImageIndex++;
//newMedia.Title = addLessonMediaTitle.Text;
//newMedia.Description = addLessonMediaDescription.Text;
//mediaInLesson.Add(newMedia);
//Adjust the look of the page
addLessonMediaTitle.Enabled = true;
addLessonMediaDescription.Enabled = true;
addLessonMediaTitle.Text = "";
addLessonMediaDescription.Text = "";
}
catch (Exception) {
MessageBox.Show("Error openning up your dialog box");
}
}
