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Table now has keynav support

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This commit is contained in:
Sasha Koshka 2023-04-04 15:05:26 -04:00
parent d633e0f5f6
commit 260e2b31b6
1 changed files with 49 additions and 13 deletions
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62
elements/containers/table.go
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@ -9,6 +9,10 @@ import "git.tebibyte.media/sashakoshka/tomo/elements/core"
import "git.tebibyte.media/sashakoshka/tomo/default/theme"
import "git.tebibyte.media/sashakoshka/tomo/default/config"
// TODO: using the event propagator core might not be the best idea here. we
// should have slightly different behavior to sync the focused element with the
// selected cell.
type tableCell struct {
tomo.Element
tomo.Pattern
@ -245,29 +249,29 @@ func (element *TableContainer) DrawBackground (bounds image.Rectangle) {
}
func (element *TableContainer) HandleMouseDown (x, y int, button input.Button) {
element.Focus()
element.Propagator.HandleMouseDown(x, y, button)
if button != input.ButtonLeft { return }
for rowIndex, row := range element.grid {
for columnIndex, child := range row {
if image.Pt(x, y).In(child.Rectangle) {
selected :=
rowIndex == element.selectedRow &&
columnIndex == element.selectedColumn
if selected { return }
oldColumn, oldRow := element.selectedColumn, element.selectedRow
element.selectedColumn, element.selectedRow = columnIndex, rowIndex
if oldColumn >= 0 && oldRow >= 0 {
element.core.DamageRegion(element.redoCell(oldColumn, oldRow))
}
element.core.DamageRegion(element.redoCell(columnIndex, rowIndex))
if element.onSelect != nil {
element.onSelect()
}
element.selectCell(columnIndex, rowIndex)
return
}}}
}
func (element *TableContainer) HandleKeyDown (key input.Key, modifiers input.Modifiers) {
switch key {
case input.KeyLeft: element.changeSelectionBy(-1, 0)
case input.KeyRight: element.changeSelectionBy(1, 0)
case input.KeyUp: element.changeSelectionBy(0, -1)
case input.KeyDown: element.changeSelectionBy(0, 1)
case input.KeyEscape: element.selectCell(-1, -1)
default: element.Propagator.HandleKeyDown(key, modifiers)
}
}
// ScrollContentBounds returns the full content size of the element.
func (element *TableContainer) ScrollContentBounds () image.Rectangle {
return element.contentBounds
@ -316,6 +320,38 @@ func (element *TableContainer) ScrollAxes () (horizontal, vertical bool) {
return true, true
}
func (element *TableContainer) changeSelectionBy (column, row int) {
column += element.selectedColumn
row += element.selectedRow
if column < 0 { column = 0 }
if row < 0 { row = 0 }
element.selectCell(column, row)
}
func (element *TableContainer) selectCell (column, row int) {
if column < -1 { column = -1 }
if row < -1 { row = -1 }
if column >= element.columns { column = element.columns - 1 }
if row >= element.rows { row = element.rows - 1 }
if column == element.selectedColumn && row == element.selectedRow {
return
}
oldColumn, oldRow := element.selectedColumn, element.selectedRow
element.selectedColumn = column
element.selectedRow = row
if oldColumn >= 0 && oldRow >= 0 {
element.core.DamageRegion(element.redoCell(oldColumn, oldRow))
}
if column >= 0 && row >= 0 {
element.core.DamageRegion(element.redoCell(column, row))
}
if element.onSelect != nil {
element.onSelect()
}
}
func (element *TableContainer) maxScrollHeight () (height int) {
viewportHeight := element.Bounds().Dy()
height = element.contentBounds.Dy() - viewportHeight