/// <summary>
/// Refreshes the label display - resetting text, width and height
/// </summary>
private void UpdateLabel(NormalLabel label)
{
label.Text = ((ExpressionMemberContainer)label.Tag).GetValueDisplay();
if (string.IsNullOrWhiteSpace(label.Text) && label is NormalSelectableLabel) label.Text = "[]"; // display something for clickable empty labels
if (label as NormalSelectableLabel != null)
(label as NormalSelectableLabel).SpecialMode = !((ExpressionMemberContainer)label.Tag).IsValid; // Special mode means there's an error with the contents
label.RequiresLinebreak = ((ExpressionMemberContainer)label.Tag).Member.RequiresLinebreak;
label.UpdateSize();
}
/// <summary>
/// Label was clicked by mouse or activated by keyboard. Not really subscribed to an event but rather called from OnKeydown and other methods subscribed to event.
/// </summary>
private void _E_l_Activated(NormalLabel label, bool byMouse = false, ExpressionMemberValueEditorActivationMode mode = ExpressionMemberValueEditorActivationMode.Normal)
{
Point where;
if (byMouse)
where = Cursor.Position;
else
{
where = new Point();
where.X += label.Width / 2;
where.Y += label.Height / 2;
where = label.PointToScreen(where);
}
((ExpressionMemberContainer)label.Tag).OnClick(label, where, mode);
}
/// <summary>
/// Update the expression shown in the flow layout panel. Makes sure to select the same item that was selected before.
/// </summary>
public void UpdateExpression()
{
// Part 1: Remember information about what was chosen
Control activeControl = null;
foreach (Control c in FlowLayoutPanelMain.Controls)
if (c.Focused)
activeControl = c;
ExpressionMemberValueDescription lastFocusedValueDescription = (activeControl != null && activeControl is NormalSelectableLabel && activeControl.Tag is ExpressionMemberContainer) ? ((ExpressionMemberContainer)activeControl.Tag).Member.ValueDescription : null;
string lastFocusedValueName = (activeControl != null && activeControl is NormalSelectableLabel && activeControl.Tag is ExpressionMemberContainer) ? ((ExpressionMemberContainer)activeControl.Tag).Member.Name : null;
List<NormalLabel> listMatchesValueDescription = new List<NormalLabel>();
List<NormalLabel> listMatchesValueName = new List<NormalLabel>();
// Part 2: Repopulating FlowLayoutPanel
TreeNode node = TreeViewStatements.SelectedNode;
if (node == null || !(node.Tag is MissionStatement))
return;
MissionStatement statement = (MissionStatement)node.Tag;
int countActiveLabels = 0;
FlowLayoutPanelMain.SuspendLayout();
FlowLayoutPanel_Clear();
//TODO: Update the expression in the flowchart [Forgot what this means] <-- WTF does this mean?
// Maybe originally I wanted to update the expression directly in the flow chart without clearing and repopulating it?
foreach (ExpressionMemberContainer item in statement.Expression)
{
if (!item.Member.ValueDescription.IsDisplayed)
continue;
NormalLabel label;
if (item.Member.ValueDescription.IsInteractive)
{
label = new NormalSelectableLabel();
label.MouseClick += _E_l_MouseClick;
label.PreviewKeyDown += _E_l_PreviewKeyDown;
label.Number = ++countActiveLabels;
}
else
{
label = new NormalLabel();
}
label.Tag = item;
if (item.Member.RequiresLinebreak)
FlowLayoutPanelMain.SetFlowBreak(FlowLayoutPanelMain.Controls[FlowLayoutPanelMain.Controls.Count - 1], true);
FlowLayoutPanelMain.Controls.Add(label);
UpdateLabel(label);
}
// Part 3: Selecting label that was selected before update
//Find all items that match value name or value description
foreach (Control c in FlowLayoutPanelMain.Controls)
{
if (((ExpressionMemberContainer)((NormalLabel)c).Tag).Member.Name == lastFocusedValueName)
listMatchesValueName.Add((NormalLabel)c);
if (((ExpressionMemberContainer)((NormalLabel)c).Tag).Member.ValueDescription == lastFocusedValueDescription)
listMatchesValueDescription.Add((NormalLabel)c);
}
switch (listMatchesValueDescription.Count)
{
case 0:
//If none matches description - pick one that matches name
if (listMatchesValueName.Count > 0) listMatchesValueName[0].Focus();
break;
case 1:
//If only one matches the description - pick it
listMatchesValueDescription[0].Focus();
break;
default:
//If more than one matches the description, but none match the name - pick first from description
if (listMatchesValueName.Count == 0)
listMatchesValueDescription[0].Focus();
//If at least one matches in name ...
else
{
//We need to narrow down...
for (int i = listMatchesValueName.Count - 1; i >= 0; i--)
{
//Remove all that match in name that do not match in description
if (!listMatchesValueDescription.Contains(listMatchesValueName[i]))
listMatchesValueName.RemoveAt(i);
}
//If none of those matching in name match in description - pick first from description
if (listMatchesValueName.Count == 0)
listMatchesValueDescription[0].Focus();
//If only one matches in name and in description - pick it
if (listMatchesValueName.Count == 1)
listMatchesValueName[0].Focus();
//If more than one matches in name and in description...
if (listMatchesValueName.Count > 1)
{
//We need to narrow down again
for (int i = listMatchesValueDescription.Count - 1; i >= 0; i--)
{
//Remove all that match in description but do not match in name
if (!listMatchesValueName.Contains(listMatchesValueDescription[i]))
listMatchesValueDescription.RemoveAt(i);
}
//If at least one matches in description and in name = pick first from description
if (listMatchesValueDescription.Count >= 1)
listMatchesValueDescription[0].Focus();
else // else pick first from those matching by name
listMatchesValueName[0].Focus();
}
}
break;
}
FlowLayoutPanelMain.ResumeLayout();
}
