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package widgets
import (
"git.sr.ht/~sircmpwn/aerc/lib/ui"
"git.sr.ht/~sircmpwn/aerc/models"
)
type HeaderLayout [][]string
type HeaderLayoutFilter struct {
layout HeaderLayout
keep func(msg *models.MessageInfo, header string) bool // filter criteria
}
// forMessage returns a filtered header layout, removing rows whose headers
// do not appear in the provided message.
func (filter HeaderLayoutFilter) forMessage(msg *models.MessageInfo) HeaderLayout {
result := make(HeaderLayout, 0, len(filter.layout))
for _, row := range filter.layout {
// To preserve layout alignment, only hide rows if all columns are empty
for _, col := range row {
if filter.keep(msg, col) {
result = append(result, row)
break
}
}
}
return result
}
// grid builds a ui grid, populating each cell by calling a callback function
// with the current header string.
func (layout HeaderLayout) grid(cb func(string) ui.Drawable) (grid *ui.Grid, height int) {
rowCount := len(layout) + 1 // extra row for spacer
grid = ui.MakeGrid(rowCount, 1, ui.SIZE_EXACT, ui.SIZE_WEIGHT)
for i, cols := range layout {
r := ui.MakeGrid(1, len(cols), ui.SIZE_EXACT, ui.SIZE_WEIGHT)
for j, col := range cols {
r.AddChild(cb(col)).At(0, j)
}
grid.AddChild(r).At(i, 0)
}
grid.AddChild(ui.NewFill(' ')).At(rowCount-1, 0)
return grid, rowCount
}
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