45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package display
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// Tab number mapped to list of URLs ordered from first to most recent.
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var tabHist = make(map[int][]string)
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// Tab number mapped to where in its history you are.
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// The value is a valid index of the string slice above.
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var tabHistPos = make(map[int]int)
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// addToHist adds the given URL to history.
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// It assumes the URL is currently being loaded and displayed on the page.
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func addToHist(u string) {
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if tabHistPos[curTab] < len(tabHist[curTab])-1 {
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// We're somewhere in the middle of the history instead, with URLs ahead and behind.
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// The URLs ahead need to be removed so this new URL is the most recent item in the history
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tabHist[curTab] = tabHist[curTab][:tabHistPos[curTab]+1]
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}
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tabHist[curTab] = append(tabHist[curTab], u)
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tabHistPos[curTab]++
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}
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func histForward() {
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if tabHistPos[curTab] >= len(tabHist[curTab])-1 {
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// Already on the most recent URL in the history
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return
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}
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tabHistPos[curTab]++
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go func() {
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handleURL(tabHist[curTab][tabHistPos[curTab]])
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applyScroll()
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}()
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}
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func histBack() {
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if tabHistPos[curTab] <= 0 {
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// First tab in history
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return
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}
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tabHistPos[curTab]--
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go func() {
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handleURL(tabHist[curTab][tabHistPos[curTab]])
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applyScroll()
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}()
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}
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