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Improve response time by only looking at top-N items

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This commit is contained in:
Junegunn Choi
2015-01-10 01:06:08 +09:00
parent aa05bf5206
commit b7bb100810
7 changed files with 193 additions and 92 deletions
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28
src/terminal.go
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@@ -25,7 +25,7 @@ type Terminal struct {
count int
progress int
reading bool
list []*Item
merger *Merger
selected map[*string]*string
reqBox *EventBox
eventBox *EventBox
@@ -64,7 +64,7 @@ func NewTerminal(opts *Options, eventBox *EventBox) *Terminal {
input: input,
multi: opts.Multi,
printQuery: opts.PrintQuery,
list: []*Item{},
merger: EmptyMerger,
selected: make(map[*string]*string),
reqBox: NewEventBox(),
eventBox: eventBox,
@@ -99,10 +99,10 @@ func (t *Terminal) UpdateProgress(progress float32) {
t.reqBox.Set(REQ_INFO, nil)
}
func (t *Terminal) UpdateList(list []*Item) {
func (t *Terminal) UpdateList(merger *Merger) {
t.mutex.Lock()
t.progress = 100
t.list = list
t.merger = merger
t.mutex.Unlock()
t.reqBox.Set(REQ_INFO, nil)
t.reqBox.Set(REQ_LIST, nil)
@@ -110,7 +110,7 @@ func (t *Terminal) UpdateList(list []*Item) {
func (t *Terminal) listIndex(y int) int {
if t.tac {
return len(t.list) - y - 1
return t.merger.Length() - y - 1
} else {
return y
}
@@ -121,8 +121,8 @@ func (t *Terminal) output() {
fmt.Println(string(t.input))
}
if len(t.selected) == 0 {
if len(t.list) > t.cy {
t.list[t.listIndex(t.cy)].Print()
if t.merger.Length() > t.cy {
t.merger.Get(t.listIndex(t.cy)).Print()
}
} else {
for ptr, orig := range t.selected {
@@ -175,7 +175,7 @@ func (t *Terminal) printInfo() {
}
t.move(1, 2, false)
output := fmt.Sprintf("%d/%d", len(t.list), t.count)
output := fmt.Sprintf("%d/%d", t.merger.Length(), t.count)
if t.multi && len(t.selected) > 0 {
output += fmt.Sprintf(" (%d)", len(t.selected))
}
@@ -189,11 +189,11 @@ func (t *Terminal) printList() {
t.constrain()
maxy := maxItems()
count := len(t.list) - t.offset
count := t.merger.Length() - t.offset
for i := 0; i < maxy; i++ {
t.move(i+2, 0, true)
if i < count {
t.printItem(t.list[t.listIndex(i+t.offset)], i == t.cy-t.offset)
t.printItem(t.merger.Get(t.listIndex(i+t.offset)), i == t.cy-t.offset)
}
}
}
@@ -417,7 +417,7 @@ func (t *Terminal) Loop() {
previousInput := t.input
events := []EventType{REQ_PROMPT}
toggle := func() {
item := t.list[t.listIndex(t.cy)]
item := t.merger.Get(t.listIndex(t.cy))
if _, found := t.selected[item.text]; !found {
t.selected[item.text] = item.origText
} else {
@@ -460,13 +460,13 @@ func (t *Terminal) Loop() {
t.cx -= 1
}
case C.TAB:
if t.multi && len(t.list) > 0 {
if t.multi && t.merger.Length() > 0 {
toggle()
t.vmove(-1)
req(REQ_LIST, REQ_INFO)
}
case C.BTAB:
if t.multi && len(t.list) > 0 {
if t.multi && t.merger.Length() > 0 {
toggle()
t.vmove(1)
req(REQ_LIST, REQ_INFO)
@@ -567,7 +567,7 @@ func (t *Terminal) Loop() {
}
func (t *Terminal) constrain() {
count := len(t.list)
count := t.merger.Length()
height := C.MaxY() - 2
diffpos := t.cy - t.offset