示例#1
0
        protected virtual void SelectCurrentItem()
        {
            if (_listBox.SelectedIndex == -1)
            {
                return;
            }

            SelectedItem = ((ItemWrapper)_listBox.SelectedItem).Item;
            Text         = ItemDisplayStringAdaptor.GetDisplayLabel(SelectedItem);    // SelectedItem.ToString();
            if (Text.Length > 0)
            {
                SelectionStart = Text.Length;
            }
        }
示例#2
0
        protected virtual void UpdateList()
        {
            int selectedIndex = _listBox.SelectedIndex;

            _listBox.BeginUpdate();
            _listBox.Items.Clear();
            _listBox.Font       = Font;
            _listBox.ItemHeight = _listBox.Font.Height;

            int maxWidth = Width;

            using (Graphics g = (_autoSizePopup) ? CreateGraphics() : null)
            {
                // Text.Trim() allows "1 " to trigger updating the list and matching "1 Universe", where
                // the match involves "1" and "Universe" separately.  (Note that "1 " does not match either
                // "1" or "Universe".)
                foreach (object item in ItemFilterer.Invoke(Text.Trim(), Items, ItemDisplayStringAdaptor))
                {
                    string label = ItemDisplayStringAdaptor.GetDisplayLabel(item);
                    _listBox.Items.Add(new ItemWrapper(item, label));
                    if (_autoSizePopup)
                    {
                        maxWidth = Math.Max(maxWidth, MeasureItem(g, label).Width);
                    }
                }
            }
            _listBox.EndUpdate();
            _listBox.SelectedIndex = selectedIndex;

            if (_listBox.Items.Count == 0)
            {
                HideList();
            }
            else
            {
                int visItems = _listBox.Items.Count;
                if (visItems > 8)
                {
                    visItems = 8;
                }

                _listBox.Height = (visItems * _listBox.ItemHeight) + 4;

                switch (BorderStyle)
                {
                case BorderStyle.FixedSingle:
                {
                    _listBox.Height += 2;
                    break;
                }

                case BorderStyle.Fixed3D:
                {
                    _listBox.Height += 4;
                    break;
                }
                }

                if (_autoSizePopup)
                {
                    bool hasScrollBar = visItems < _listBox.Items.Count;
                    _listBox.Width = maxWidth + (hasScrollBar ? 10 : 0);
                    // in theory this shouldn't be needed
                }
                _listBox.RightToLeft = RightToLeft;
            }
        }