private void LocateSearching()
{
if (this.searchingKey == "")
{
this.popupList.SelectedItem = null;
}
else
{
List <TextEditorPopupItem> items = this.popupList.Items;
int first = 0;
int last = items.Count - 1;
TextEditorPopupItem item = null;
while (first <= last)
{
int mid = (first + last) / 2;
string text = items[mid].Text;
if (text.StartsWith(this.searchingKey, StringComparison.InvariantCultureIgnoreCase))
{
item = items[mid];
}
if (string.Compare(this.searchingKey, text, StringComparison.InvariantCultureIgnoreCase) <= 0)
{
last = mid - 1;
}
else
{
first = mid + 1;
}
}
this.popupList.SelectedItem = item;
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
int min = this.scrollBar.Value;
int max = Math.Min(this.items.Count - 1, min + this.maxItems - 1);
e.Graphics.FillRectangle(SystemBrushes.Window, 0, 0, this.ClientSize.Width, this.ClientSize.Height);
for (int i = min; i <= max; i++)
{
int y = (i - min) * this.itemHeight;
TextEditorPopupItem item = this.items[i];
if (item == this.selectedItem)
{
e.Graphics.FillRectangle(SystemBrushes.Highlight, 0, y, this.itemWidth, this.itemHeight);
}
int ix = (this.itemTextOffset - this.imageList.ImageSize.Width) / 2;
int iy = (this.itemHeight - this.imageList.ImageSize.Height) / 2;
this.imageList.Draw(e.Graphics, ix, y + iy, this.images.IndexOf(item.Image));
int tx = this.itemTextOffset + 1;
int ty = (int)(this.itemHeight - e.Graphics.MeasureString(item.Text, this.Font).Height) / 2;
string tail = item.Snippet == null ? "" : SnippetTail;
if (item == this.selectedItem)
{
TextRenderer.DrawText(e.Graphics, item.Text + tail, this.Font, new Point(tx, y + ty), SystemColors.HighlightText, Flags);
}
else
{
if (item.PureSnippet)
{
TextRenderer.DrawText(e.Graphics, item.Text + tail, this.Font, new Point(tx, y + ty), SystemColors.GrayText, Flags);
}
else
{
TextRenderer.DrawText(e.Graphics, item.Text, this.Font, new Point(tx, y + ty), SystemColors.ControlText, Flags);
int offset = TextRenderer.MeasureText(e.Graphics, item.Text, this.Font, new Size(0, 0), Flags).Width;
TextRenderer.DrawText(e.Graphics, tail, this.Font, new Point(tx + offset, y + ty), SystemColors.GrayText, Flags);
}
}
}
}
public bool ProcessKey(KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.Enter:
{
if (this.popupList.SelectedItem != null)
{
SelectItem();
Hide();
return(true);
}
else
{
return(false);
}
}
case Keys.Tab:
{
TextEditorPopupItem selectedItem = this.popupList.SelectedItem;
if (selectedItem != null && selectedItem.Snippet != null)
{
SelectItem("");
Hide();
this.textEditorBox.UIExtensions.InsertSnippet(selectedItem.Snippet);
return(true);
}
else
{
return(false);
}
}
default:
return(this.popupList.ProcessKey(e));
}
}
public void Show(Control control, Point locationTop, Point locationBottom, IEnumerable <TextEditorPopupItem> items, IEnumerable <SnippetContent> snippets, Bitmap snippetImage, string searchingKey, bool needToDisposeImages, int maxItems)
{
Dictionary <string, TextEditorPopupItem> itemMap = new Dictionary <string, TextEditorPopupItem>();
foreach (var item in items)
{
item.Snippet = null;
item.PureSnippet = false;
itemMap[item.Text] = item;
}
foreach (var snippet in snippets)
{
TextEditorPopupItem item = null;
if (!itemMap.TryGetValue(snippet.Name, out item))
{
item = new TextEditorPopupItem()
{
Image = snippetImage,
Text = snippet.Name,
PureSnippet = true
};
itemMap[item.Text] = item;
}
item.Snippet = snippet;
}
if (snippets.Count() == 0 && snippetImage != null && needToDisposeImages)
{
snippetImage.Dispose();
}
if (itemMap.Count > 0)
{
this.popupList.FillList(itemMap.Values.OrderBy(i => i.Text.ToUpper()).ToList(), needToDisposeImages, maxItems);
this.searchingKey = searchingKey;
LocateSearching();
this.ClientSize = this.popupList.Size;
Show(control, locationTop, locationBottom);
}
}
public bool ProcessKey(KeyEventArgs e)
{
if (this.selectedItem == null)
{
switch (e.KeyCode)
{
case Keys.Up:
case Keys.Down:
this.SelectedItem = this.previousSelectedItem ?? this.items[0];
Invalidate();
return(true);
}
}
switch (e.KeyCode)
{
case Keys.Up:
this.SelectedItem = this.items[Math.Max(0, this.items.IndexOf(this.selectedItem) - 1)];
break;
case Keys.Down:
this.SelectedItem = this.items[Math.Min(this.items.Count - 1, this.items.IndexOf(this.selectedItem) + 1)];
break;
case Keys.Home:
this.SelectedItem = this.items[0];
break;
case Keys.End:
this.SelectedItem = this.items[this.items.Count - 1];
break;
default:
return(false);
}
Invalidate();
return(true);
}
public void FillList(List <TextEditorPopupItem> items, bool needToDisposeImages, int maxItems)
{
UnfillList();
this.items = items;
this.images = items.Select(i => i.Image).Distinct().ToList();
this.selectedItem = null;
this.previousSelectedItem = null;
this.needToDisposeImages = needToDisposeImages;
this.maxItems = maxItems;
{
bool nonLetter = false;
foreach (var item in items)
{
foreach (var c in item.Text)
{
if (!('A' <= c && c <= 'Z' || 'a' <= c || c <= 'z' || '0' <= c || c <= '9' || c == '_'))
{
nonLetter = true;
break;
}
}
if (nonLetter)
{
break;
}
}
string[] itemTexts = this.items.Select(i => i.Text + (i.Snippet == null ? "" : SnippetTail)).ToArray();
int maxHeight = 0;
int maxWidth = 0;
if (nonLetter)
{
string longestText = itemTexts.Aggregate("", (a, b) => (a.Length > b.Length ? a : b));
Size sizeChar = TextRenderer.MeasureText("我", this.Font);
Size longestSize = TextRenderer.MeasureText(longestText, this.Font);
maxHeight = Math.Max(sizeChar.Height, longestSize.Height);
maxWidth = longestText.Length * sizeChar.Width;
}
else
{
if (this.cachedLetterSizes == null)
{
string letters = "abcdefghijklmnopqrstuvwxyz";
letters = letters + letters.ToUpper() + "_0123456789";
int count = (int)letters.Max();
this.cachedLetterSizes = new Size[count + 1];
using (Graphics g = Graphics.FromHwnd(this.Handle))
{
foreach (var c in letters)
{
this.cachedLetterSizes[(int)c] = TextRenderer.MeasureText(g, c.ToString(), this.Font, new Size(0, 0), TextFormatFlags.ExpandTabs | TextFormatFlags.NoPadding | TextFormatFlags.NoPrefix);
}
}
}
Size[] sizes = itemTexts.Select(i =>
i.Select(c => this.cachedLetterSizes[(int)c])
.Aggregate(new Size(0, 0), (a, b) => new Size(a.Width + b.Width, Math.Max(a.Height, b.Height)))
).ToArray();
maxHeight = sizes.Select(s => s.Height).Max();
maxWidth = (int)(sizes.Select(s => s.Width).Max() * 1.2);
}
this.itemHeight = 2 + Math.Max(maxHeight, this.images.Max(i => i.Height));
this.itemTextOffset = 2 + this.images.Max(i => i.Width);
this.itemWidth = this.itemTextOffset + 2 + maxWidth;
}
if (items.Count <= maxItems)
{
this.scrollBar.Visible = false;
this.scrollBar.Value = 0;
this.ClientSize = new Size(this.itemWidth, this.itemHeight * items.Count);
}
else
{
this.scrollBar.Visible = true;
this.scrollBar.Value = 0;
this.scrollBar.Minimum = 0;
this.scrollBar.Maximum = items.Count - 1;
this.scrollBar.LargeChange = maxItems;
this.ClientSize = new Size(this.itemWidth + this.scrollBar.Width, this.itemHeight * maxItems);
}
this.imageList.Images.Clear();
this.imageList.ImageSize = new Size(items.Max(i => i.Image.Width), items.Max(i => i.Image.Height));
this.imageList.TransparentColor = items[0].Image.GetPixel(0, 0);
this.imageList.Images.AddRange(this.images.ToArray());
this.selectedItem = items[0];
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
this.selectedItem = this.items[e.Y / this.itemHeight + this.scrollBar.Value];
Invalidate();
}
