/// <summary>
/// Event handler method for the DragDrop action, performs validation and imports image properties into program.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MainForm_DragDrop(object sender, DragEventArgs e)
{
// Create a string array that contains complete file paths to the imported files
string[] itemArray = (string[])e.Data.GetData(DataFormats.FileDrop);
// Validate the imported items with the AreAllImageFiles method
if (Validation.AreAllImageFiles(itemArray))
{
// If the array is successfully validated, try to clear any existing items in the
// ListView and ImageObjectList and then populate them with new values
try
{
Logic.ClearItemsFromObjectList(ImageObjectList);
View.ClearItemsFromListView(lvItemList);
Logic.PopulateImageObjectList(itemArray, ImageObjectList);
View.PopulateListView(ImageObjectList, lvItemList);
}
catch (ArgumentException)
{
// Display an 'unexpected error' MessageBox when an ArgumentException is thrown
PresetMessageBox.UnexpectedError("");
}
}
else
{
// Display a 'File Type Error' MessageBox when the array is not validated successfully
PresetMessageBox.FileTypeError();
}
}
/// <summary>
/// Event handler method for the 'Delete Selected' button click action, performs validation and deletes selected items from ListView and ImageObjectList.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnDeleteSelected_Click(object sender, EventArgs e)
{
// Validate the selection of at least one item
if (Validation.AtLeastOneItemIsSelected(lvItemList))
{
// Loop through each item in the ListView SelectedItems collection and
// attempt to remove them form the ListView and ImageObjectList using the current item's index
foreach (ListViewItem item in lvItemList.SelectedItems)
{
try
{
int index = item.Index;
// Remove item(s) from ListView and ImageObjectList by index
View.RemoveItemFromListViewByIndex(lvItemList, index);
Logic.RemoveItemFromObjectListByIndex(ImageObjectList, index);
}
catch (NullReferenceException)
{
// Display an 'Unexpected Error' MessageBox when a NullReferenceException is thrown, then clear all items from the ImageObjectList and ListView
PresetMessageBox.UnexpectedError("All imported images will be wiped from memory to ensure stability.");
View.ClearItemsFromListView(lvItemList);
Logic.ClearItemsFromObjectList(ImageObjectList);
}
}
}
else
{
// If nothing is selected, display a 'Nothing Selected' MessageBox
PresetMessageBox.NothingSelectedError();
}
}
/// <summary>
/// Event handler method for the 'Process Images' button click action, performs validation and opens ConfirmForm
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnImportImages_Click(object sender, EventArgs e)
{
// Initialize an OpenFileDialog object to let user select files
using (OpenFileDialog importImagesDialog = new OpenFileDialog())
{
// Set the MultiSelect property of OpenFileDialog to true to allow selecting multiple images in one import
importImagesDialog.Multiselect = true;
// Show dialog and check if the result is 'OK'
if (importImagesDialog.ShowDialog() == DialogResult.OK)
{
// Create a string array that contains complete file paths to the imported files selected in OpenFileDialog
string[] itemsFilePaths = importImagesDialog.FileNames;
// Validate the imported items with the AreAllImageFiles method
if (Validation.AreAllImageFiles(itemsFilePaths))
{
try
{
// If the array is successfully validated, try to clear any existing items in the
// ListView and ImageObjectList and then populate them with new values
Logic.ClearItemsFromObjectList(ImageObjectList);
View.ClearItemsFromListView(lvItemList);
Logic.PopulateImageObjectList(itemsFilePaths, ImageObjectList);
View.PopulateListView(ImageObjectList, lvItemList);
}
catch (ArgumentException)
{
// Display an 'unexpected error' MessageBox when an ArgumentException is thrown
PresetMessageBox.UnexpectedError("");
}
}
else
{
// Display a 'File Type Error' MessageBox when the array is not validated successfully
PresetMessageBox.FileTypeError();
}
}
}
}
