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Update table.go - Fixed a bug with concurrent access zu the maps for … #1

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Update table.go - Fixed a bug with concurrent access zu the maps for … #1

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79 changes: 73 additions & 6 deletions widget/table.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package widget
import (
"math"
"strconv"
"sync"

"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
Expand Down Expand Up @@ -91,6 +92,7 @@ type Table struct {
focused bool
selectedCell, hoveredCell *TableCellID
cells *tableCells
mapHeightWidthLock sync.Mutex // Used to avoid cuncurrent access to the following maps
columnWidths, rowHeights map[int]float32
moveCallback func()
offset fyne.Position
Expand Down Expand Up @@ -138,6 +140,8 @@ func (t *Table) CreateRenderer() fyne.WidgetRenderer {

t.propertyLock.Lock()
t.headerSize = t.createHeader().MinSize()

t.mapHeightWidthLock.Lock()
if t.columnWidths != nil {
if v, ok := t.columnWidths[-1]; ok {
t.headerSize.Width = v
Expand All @@ -148,6 +152,8 @@ func (t *Table) CreateRenderer() fyne.WidgetRenderer {
t.headerSize.Height = v
}
}
t.mapHeightWidthLock.Unlock()

t.cellSize = t.templateSize()
t.cells = newTableCells(t)
t.content = widget.NewScroll(t.cells)
Expand Down Expand Up @@ -300,11 +306,14 @@ func (t *Table) SetColumnWidth(id int, width float32) {
t.headerSize.Width = width
}

t.mapHeightWidthLock.Lock()
if t.columnWidths == nil {
t.columnWidths = make(map[int]float32)
}

t.columnWidths[id] = width
t.mapHeightWidthLock.Unlock()

t.propertyLock.Unlock()

t.Refresh()
Expand All @@ -321,11 +330,13 @@ func (t *Table) SetRowHeight(id int, height float32) {
t.headerSize.Height = height
}

t.mapHeightWidthLock.Lock()
if t.rowHeights == nil {
t.rowHeights = make(map[int]float32)
}

t.rowHeights[id] = height
t.mapHeightWidthLock.Unlock()

t.propertyLock.Unlock()

t.Refresh()
Expand Down Expand Up @@ -646,9 +657,12 @@ func (t *Table) findX(col int) (cellX float32, cellWidth float32) {
}

width := cellSize.Width
t.mapHeightWidthLock.Lock()
if w, ok := t.columnWidths[i]; ok {
width = w
}
t.mapHeightWidthLock.Unlock()

cellWidth = width
}
return
Expand All @@ -663,9 +677,14 @@ func (t *Table) findY(row int) (cellY float32, cellHeight float32) {
}

height := cellSize.Height

t.mapHeightWidthLock.Lock()

if h, ok := t.rowHeights[i]; ok {
height = h
}
t.mapHeightWidthLock.Unlock()

cellHeight = height
}
return
Expand Down Expand Up @@ -763,15 +782,21 @@ func (t *Table) tapped(pos fyne.Position) {
if t.hoverHeaderRow != noCellMatch {
t.dragCol = noCellMatch
t.dragRow = t.hoverHeaderRow
t.mapHeightWidthLock.Lock()
size, ok := t.rowHeights[t.hoverHeaderRow]
t.mapHeightWidthLock.Unlock()
if !ok {
size = t.cellSize.Height
}
t.dragStartSize = size
} else if t.hoverHeaderCol != noCellMatch {
t.dragCol = t.hoverHeaderCol
t.dragRow = noCellMatch

t.mapHeightWidthLock.Lock()
size, ok := t.columnWidths[t.hoverHeaderCol]
t.mapHeightWidthLock.Unlock()

if !ok {
size = t.cellSize.Width
}
Expand Down Expand Up @@ -827,19 +852,23 @@ func (t *Table) stickyColumnWidths(colWidth float32, cols int) (visible []float3

visible = make([]float32, max)

t.mapHeightWidthLock.Lock()
if len(t.columnWidths) == 0 {
for i := 0; i < max; i++ {
visible[i] = colWidth
}
return
}
t.mapHeightWidthLock.Unlock()

for i := 0; i < max; i++ {
height := colWidth

t.mapHeightWidthLock.Lock()
if h, ok := t.columnWidths[i]; ok {
height = h
}
t.mapHeightWidthLock.Unlock()

visible[i] = height
}
Expand All @@ -860,7 +889,11 @@ func (t *Table) visibleColumnWidths(colWidth float32, cols int) (visible map[int
stick := t.StickyColumnCount
size := t.size.Load()

if len(t.columnWidths) == 0 {
t.mapHeightWidthLock.Lock()
savedLen := len(t.columnWidths)
t.mapHeightWidthLock.Unlock()

if savedLen == 0 {
paddedWidth := colWidth + padding

offX = float32(math.Floor(float64(t.offset.X/paddedWidth))) * paddedWidth
Expand Down Expand Up @@ -890,9 +923,11 @@ func (t *Table) visibleColumnWidths(colWidth float32, cols int) (visible map[int

for i := 0; i < cols; i++ {
width := colWidth
t.mapHeightWidthLock.Lock()
if w, ok := t.columnWidths[i]; ok {
width = w
}
t.mapHeightWidthLock.Unlock()

if colOffset <= t.offset.X-width-padding {
// before visible content
Expand Down Expand Up @@ -927,7 +962,11 @@ func (t *Table) stickyRowHeights(rowHeight float32, rows int) (visible []float32

visible = make([]float32, max)

if len(t.rowHeights) == 0 {
t.mapHeightWidthLock.Lock()
savedLen := len(t.rowHeights)
t.mapHeightWidthLock.Unlock()

if savedLen == 0 {
for i := 0; i < max; i++ {
visible[i] = rowHeight
}
Expand All @@ -937,9 +976,11 @@ func (t *Table) stickyRowHeights(rowHeight float32, rows int) (visible []float32
for i := 0; i < max; i++ {
height := rowHeight

t.mapHeightWidthLock.Lock()
if h, ok := t.rowHeights[i]; ok {
height = h
}
t.mapHeightWidthLock.Unlock()

visible[i] = height
}
Expand All @@ -960,7 +1001,11 @@ func (t *Table) visibleRowHeights(rowHeight float32, rows int) (visible map[int]
stick := t.StickyRowCount
size := t.size.Load()

if len(t.rowHeights) == 0 {
t.mapHeightWidthLock.Lock()
savedLen := len(t.rowHeights)
t.mapHeightWidthLock.Unlock()

if savedLen == 0 {
paddedHeight := rowHeight + padding

offY = float32(math.Floor(float64(t.offset.Y/paddedHeight))) * paddedHeight
Expand Down Expand Up @@ -990,9 +1035,11 @@ func (t *Table) visibleRowHeights(rowHeight float32, rows int) (visible map[int]

for i := 0; i < rows; i++ {
height := rowHeight
t.mapHeightWidthLock.Lock()
if h, ok := t.rowHeights[i]; ok {
height = h
}
t.mapHeightWidthLock.Unlock()

if rowOffset <= t.offset.Y-height-padding {
// before visible content
Expand Down Expand Up @@ -1069,19 +1116,23 @@ func (t *tableRenderer) MinSize() fyne.Size {
if t.t.StickyRowCount > 0 {
for i := 0; i < t.t.StickyRowCount; i++ {
height := t.t.cellSize.Height
t.t.mapHeightWidthLock.Lock()
if h, ok := t.t.rowHeights[i]; ok {
height = h
}
t.t.mapHeightWidthLock.Unlock()

min.Height += height + sep
}
}
if t.t.StickyColumnCount > 0 {
for i := 0; i < t.t.StickyColumnCount; i++ {
width := t.t.cellSize.Width
t.t.mapHeightWidthLock.Lock()
if w, ok := t.t.columnWidths[i]; ok {
width = w
}
t.t.mapHeightWidthLock.Unlock()

min.Width += width + sep
}
Expand All @@ -1093,6 +1144,8 @@ func (t *tableRenderer) Refresh() {
th := t.t.Theme()
t.t.propertyLock.Lock()
t.t.headerSize = t.t.createHeader().MinSize()

t.t.mapHeightWidthLock.Lock()
if t.t.columnWidths != nil {
if v, ok := t.t.columnWidths[-1]; ok {
t.t.headerSize.Width = v
Expand All @@ -1103,6 +1156,8 @@ func (t *tableRenderer) Refresh() {
t.t.headerSize.Height = v
}
}
t.t.mapHeightWidthLock.Unlock()

t.t.cellSize = t.t.templateSize()
t.calculateHeaderSizes(th)
t.t.propertyLock.Unlock()
Expand Down Expand Up @@ -1210,12 +1265,18 @@ func (r *tableCellsRenderer) MinSize() fyne.Size {
stickCols := r.cells.t.StickyColumnCount

width := float32(0)
if len(r.cells.t.columnWidths) == 0 {
r.cells.t.mapHeightWidthLock.Lock()
savedLen := len(r.cells.t.columnWidths)
r.cells.t.mapHeightWidthLock.Unlock()

if savedLen == 0 {
width = r.cells.t.cellSize.Width * float32(cols-stickCols)
} else {
cellWidth := r.cells.t.cellSize.Width
for col := stickCols; col < cols; col++ {
r.cells.t.mapHeightWidthLock.Lock()
colWidth, ok := r.cells.t.columnWidths[col]
r.cells.t.mapHeightWidthLock.Unlock()
if ok {
width += colWidth
} else {
Expand All @@ -1225,12 +1286,18 @@ func (r *tableCellsRenderer) MinSize() fyne.Size {
}

height := float32(0)
if len(r.cells.t.rowHeights) == 0 {
r.cells.t.mapHeightWidthLock.Lock()
savedLen = len(r.cells.t.rowHeights)
r.cells.t.mapHeightWidthLock.Unlock()

if savedLen == 0 {
height = r.cells.t.cellSize.Height * float32(rows-stickRows)
} else {
cellHeight := r.cells.t.cellSize.Height
for row := stickRows; row < rows; row++ {
r.cells.t.mapHeightWidthLock.Lock()
rowHeight, ok := r.cells.t.rowHeights[row]
r.cells.t.mapHeightWidthLock.Unlock()
if ok {
height += rowHeight
} else {
Expand Down