/// <summary>
/// Verfies the category information is valid, and creates a new category if it is.</summary>
private void SaveCategoryEditButton_Click(object sender, EventArgs e)
{
// check for valid input
if (ValidateCategoryModify())
{
if (currentCategory == null)
{
// TODO: create a new category
CalendarCategory cat = new CalendarCategory()
{
Name = nameField.Text,
Symbol = (Shape)Enum.Parse(typeof(Shape), symbolDropDown.SelectedItem.ToString()),
Colour = Color.FromName(colorDropDown.SelectedItem.ToString())
};
eventCategories.Add(cat.Name, cat);
}
else
{
// check if it's only a change in symbol of colour
CalendarCategory cat;
if (eventCategories.TryGetValue(nameField.Text, out cat))
{
// simply update the symbol and colour
cat.Symbol = (Shape)Enum.Parse(typeof(Shape), symbolDropDown.SelectedItem.ToString());
cat.Colour = Color.FromName(colorDropDown.SelectedItem.ToString());
}
else
{
// otherwise,
if (eventCategories.TryGetValue(currentCategory.Name, out cat))
{
// set all event under the old category to use its new name
foreach (CalendarEvent ev in cat.Events)
{
ev.Category = nameField.Text;
}
// remove the category from the dictionary
eventCategories.Remove(currentCategory.Name);
// add back the category under its new name
eventCategories.Add(nameField.Text, new CalendarCategory()
{
Name = nameField.Text,
Symbol = (Shape)Enum.Parse(typeof(Shape), symbolDropDown.SelectedItem.ToString()),
Colour = Color.FromName(colorDropDown.SelectedItem.ToString())
});
}
}
}
// refresh the calendar
RefreshCalendar();
// switch view back to events list
eventsDisplayPanel.Visible = true;
eventModifyPanel.Visible = false;
categoryModifyPanel.Visible = false;
}
}
/// <summary>
/// Shows a confirmation before allowing the user to delete the selected category.</summary>
private void DeleteCategoryMenuItem_Click(object sender, EventArgs e)
{
// get the selected category
TreeNode parentNode = (((sender as ToolStripMenuItem).Owner as ContextMenuStrip).SourceControl as TreeView).SelectedNode;
currentCategory = parentNode.Tag as CalendarCategory;
// create a string with category data
string checkString = currentCategory.Name + "\r\n"
+ "Symbol: " + currentCategory.Colour.ToKnownColor().ToString() + " " + currentCategory.Symbol.ToString() + "\r\n"
+ "Events:\r\n";
currentCategory.Events.Sort(new SortEventsByDate());
if (currentCategory.Events.Count > 5)
{
for (int i = 0; i < 5; i++)
{
checkString += "- " + currentCategory.Events[i].Label;
checkString += " (" + currentCategory.Events[i].StartingTime.ToString("MMM dd h:mmtt");
checkString += " - " + currentCategory.Events[i].EndingTime.ToString("MMM dd h:mmtt") + ")\r\n";
}
checkString += string.Format("... and {0} more.", currentCategory.Events.Count - 5);
}
else
{
foreach (CalendarEvent ev in currentCategory.Events)
{
checkString += "- " + ev.Label;
checkString += " (" + ev.StartingTime.ToString("MMM dd h:mmtt");
checkString += " - " + ev.EndingTime.ToString("MMM dd h:mmtt") + ")\r\n";
}
}
checkString += "\r\n\r\nNote: Events will be recategorized to Uncategorized";
// show a confirmation dialog to user before deleting event
DialogResult check = MessageBox.Show("Are you sure you wish to delete this category?\r\n\r\n" + checkString, "Delete Category", MessageBoxButtons.YesNo);
if (check == DialogResult.Yes)
{
// delete the category
eventCategories.Remove(currentCategory.Name);
foreach (CalendarEvent ev in currentCategory.Events)
{
ev.Category = "Uncategorized";
}
// refresh the form
RefreshCalendar();
}
}
/// <summary>
/// Cancels the modification of an event.</summary>
private void CreateCategoryButton_Click(object sender, EventArgs e)
{
currentCategory = null;
// ensure previous inputs are cleared
ClearCategoryModify();
// set title of panel
categoryModifyLabel.Text = "Create Category";
// switch view back to events list
categoryModifyPanel.Visible = true;
eventsDisplayPanel.Visible = false;
eventModifyPanel.Visible = false;
}
/// <summary>
/// Takes the user to the category modification panel for the selected category.</summary>
private void ModifyCategoryMenuItem_Click(object sender, EventArgs e)
{
// get the selected category
TreeNode parentNode = (((sender as ToolStripMenuItem).Owner as ContextMenuStrip).SourceControl as TreeView).SelectedNode;
currentCategory = parentNode.Tag as CalendarCategory;
// ensure previous inputs are cleared
ClearCategoryModify();
// set title of panel
categoryModifyLabel.Text = "Modify Category";
// fill in event details in controls
nameField.Text = currentCategory.Name;
symbolDropDown.SelectedIndex = symbolDropDown.FindStringExact(currentCategory.Symbol.ToString());
colorDropDown.SelectedIndex = colorDropDown.FindStringExact(currentCategory.Colour.ToKnownColor().ToString());
// switch view to category modification
categoryModifyPanel.Visible = true;
eventsDisplayPanel.Visible = false;
eventModifyPanel.Visible = false;
}