/// <inheritdoc />
public void Draw(Table <T> table, IEnumerable <T> items, TableConfig config)
{
var enumerated = items as List <T> ?? items.ToList();
if (table.ShowIndexColumn)
{
table.Columns.Insert(0, new Column <T>(string.Empty, x => (enumerated.IndexOf(x) + 1).ToString()));
}
this.Initialize(table, enumerated, config);
this.PostInitialize();
if (!string.IsNullOrEmpty(table.Title))
{
this.DrawTitle(table, config);
}
else
{
this.builder.Append(config.TopLeftCharacter);
for (int i = 0; i < table.Columns.Count; i++)
{
var column = table.Columns[i];
this.builder.Append(config.HorizontalCharacter, this.paddedColumnWidthLookup[column]);
this.builder.Append(i != table.Columns.Count - 1 ? config.HorizontalTopJointCharacter : config.TopRightCharacter);
}
this.builder.Append(Environment.NewLine);
}
this.DrawHeader(table, config);
foreach (var item in enumerated)
{
this.builder.Append(config.VerticalCharacter);
foreach (var column in table.Columns)
{
var content = column.ValueSelector(item) ?? config.NullCellDefaultValue;
this.DrawCell(content, this.columnWidthLookup[column], column.Alignment, config);
this.builder.Append(config.VerticalCharacter);
}
this.builder.Append(Environment.NewLine);
}
this.DrawFooter(table, config);
this.writer.WriteLine(this.builder);
}
private void DrawFooter(Table <T> table, TableConfig config)
{
this.builder.Append(config.BottomLeftCharacter);
for (int i = 0; i < table.Columns.Count; i++)
{
var column = table.Columns[i];
this.builder.Append(config.HorizontalCharacter, this.paddedColumnWidthLookup[column]);
this.builder.Append(i != table.Columns.Count - 1 ? config.HorizontalBottomJointCharacter : config.BottomRightCharacter);
}
this.builder.Append(Environment.NewLine);
}
private void Initialize(Table <T> table, IEnumerable <T> enumerated, TableConfig config)
{
this.columnWidthLookup = table.Columns.ToDictionary(col => col, col => ComputeColumnBaseWidth(col, enumerated, config.NullCellDefaultValue));
var contentLineWidth = this.columnWidthLookup.Values.Sum() + (table.Columns.Count * (config.CellLeftPadding + config.CellRightPadding)) + table.Columns.Count + 1;
var titleLineWidth = table.Title.Length + config.CellLeftPadding + config.CellRightPadding + 2;
if (contentLineWidth < titleLineWidth)
{
var lastColumn = this.columnWidthLookup.Last();
var lastColumnWidth = lastColumn.Value + (titleLineWidth - contentLineWidth);
this.columnWidthLookup[lastColumn.Key] = lastColumnWidth;
}
this.paddedColumnWidthLookup = this.columnWidthLookup.ToDictionary(kvp => kvp.Key, kvp => kvp.Value + config.CellLeftPadding + config.CellRightPadding);
this.TableMaxWidth = Math.Max(contentLineWidth, titleLineWidth);
}
private void DrawCell(string content, int totalWidth, ColumnAlignment alignment, TableConfig config)
{
this.builder.Append(' ', config.CellLeftPadding);
switch (alignment)
{
case ColumnAlignment.Center:
{
var leftPadding = (totalWidth - content.Length) / 2;
var rightPadding = totalWidth - content.Length - leftPadding;
this.builder.Append(' ', leftPadding);
this.builder.Append(content);
this.builder.Append(' ', rightPadding);
break;
}
case ColumnAlignment.Left:
{
this.builder.Append(content.PadRight(totalWidth));
break;
}
case ColumnAlignment.Right:
{
this.builder.Append(content.PadLeft(totalWidth));
break;
}
default:
break;
}
this.builder.Append(' ', config.CellRightPadding);
}