48 lines
1.0 KiB
TypeScript
48 lines
1.0 KiB
TypeScript
interface HistoryFile {
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inner: string[],
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cursor: number,
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cursor_reset: () => void
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}
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interface History {
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file: HistoryFile
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add: (cmd: string) => void,
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index_up: (ps1input: HTMLInputElement) => void,
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index_down: (ps1input: HTMLInputElement) => void
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}
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const history = {} as History
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history.file = {} as HistoryFile
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history.file.inner = []
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history.file.cursor = 0
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history.file.cursor_reset = function() {
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this.cursor = 0
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}
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history.add = function(cmd: string) {
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if (this.file.inner[0] !== cmd) {
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this.file.inner.unshift(cmd)
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}
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}
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history.index_up = function(ps1input: HTMLInputElement) {
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const item = this.file.inner[this.file.cursor]
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if (item) {
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this.file.cursor+=1
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ps1input.value = item
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}
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}
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history.index_down = function(ps1input: HTMLInputElement) {
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if (this.file.cursor!==0) {
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this.file.cursor-=1
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if (this.file.cursor!==0) {
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const item = this.file.inner[this.file.cursor-1]
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if (item) { ps1input.value = item }
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} else {
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this.file.cursor_reset()
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ps1input.value = ""
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}
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}
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}
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export default history |