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Hadi
31 lines
577 B
Go
31 lines
577 B
Go
package util
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// CursorMovePage moves cursor forward or backward by one page (perPage items),
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// clamped to [0, total-1].
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func CursorMovePage(cursor, total, perPage int, forward bool) int {
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step := perPage
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if step < 1 {
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step = 1
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}
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if forward {
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cursor += step
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} else {
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cursor -= step
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}
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if cursor < 0 || total <= 0 {
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return 0
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}
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if cursor >= total {
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return total - 1
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}
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return cursor
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}
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// CursorGotoBottom returns the last valid cursor index for a list of total items.
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func CursorGotoBottom(total int) int {
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if total <= 0 {
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return 0
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}
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return total - 1
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}
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