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