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 }