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Added an "evaluate all rows" flag to Table. Resolves #345

tablepad
Oliver 3 years ago
parent
commit
2d957c4be0
  1. 31
      table.go

31
table.go

@ -227,6 +227,10 @@ type Table struct { @@ -227,6 +227,10 @@ type Table struct {
// The rightmost column in the data set.
lastColumn int
// If true, when calculating the widths of the columns, all rows are evaluated
// instead of only the visible ones.
evaluateAllRows bool
// The number of fixed rows / columns.
fixedRows, fixedColumns int
@ -383,6 +387,17 @@ func (t *Table) GetOffset() (row, column int) { @@ -383,6 +387,17 @@ func (t *Table) GetOffset() (row, column int) {
return t.rowOffset, t.columnOffset
}
// SetEvaluateAllRows sets a flag which determines the rows to be evaluated when
// calculating the widths of the table's columns. When false, only visible rows
// are evaluated. When true, all rows in the table are evaluated.
//
// Set this flag to true to avoid shifting column widths when the table is
// scrolled. (May be slower for large tables.)
func (t *Table) SetEvaluateAllRows(all bool) *Table {
t.evaluateAllRows = all
return t
}
// SetSelectedFunc sets a handler which is called whenever the user presses the
// Enter key on a selected cell/row/column. The handler receives the position of
// the selection and its cell contents. If entire rows are selected, the column
@ -637,14 +652,20 @@ func (t *Table) Draw(screen tcell.Screen) { @@ -637,14 +652,20 @@ func (t *Table) Draw(screen tcell.Screen) {
// Determine the indices and widths of the columns and rows which fit on the
// screen.
var (
columns, rows, widths []int
tableHeight, tableWidth int
columns, rows, allRows, widths []int
tableHeight, tableWidth int
)
rowStep := 1
if t.borders {
rowStep = 2 // With borders, every table row takes two screen rows.
tableWidth = 1 // We start at the second character because of the left table border.
}
if t.evaluateAllRows {
allRows = make([]int, len(t.cells))
for row := range t.cells {
allRows[row] = row
}
}
indexRow := func(row int) bool { // Determine if this row is visible, store its index.
if tableHeight >= height {
return false
@ -701,7 +722,11 @@ ColumnLoop: @@ -701,7 +722,11 @@ ColumnLoop:
// What's this column's width (without expansion)?
maxWidth := -1
expansion := 0
for _, row := range rows {
evaluationRows := rows
if t.evaluateAllRows {
evaluationRows = allRows
}
for _, row := range evaluationRows {
if cell := getCell(row, column); cell != nil {
_, _, _, _, _, _, cellWidth := decomposeString(cell.Text, true, false)
if cell.MaxWidth > 0 && cell.MaxWidth < cellWidth {

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