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Implement streaming preview window (#2215)

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Fix #2212

    # Will start rendering after 200ms, update every 100ms
    fzf --preview 'for i in $(seq 100); do echo $i; sleep 0.01; done'

    # Should print "Loading .." message after 500ms
    fzf --preview 'sleep 1; for i in $(seq 100); do echo $i; sleep 0.01; done'

    # The first line should appear after 200ms
    fzf --preview 'date; sleep 2; date'

    # Should not render before enough lines for the scroll offset are ready
    rg --line-number --no-heading --color=always ^ |
      fzf --delimiter : --ansi --preview-window '+{2}-/2' \
          --preview 'sleep 1; bat --style=numbers --color=always --pager=never --highlight-line={2} {1}'
This commit is contained in:
Junegunn Choi
2020-10-18 17:03:33 +09:00
committed by GitHub
parent 305896fcb3
commit faf68dbc5c
8 changed files with 251 additions and 120 deletions
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7
src/tui/dummy.go
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@@ -32,10 +32,9 @@ func (r *FullscreenRenderer) Clear() {}
func (r *FullscreenRenderer) Refresh() {}
func (r *FullscreenRenderer) Close() {}
func (r *FullscreenRenderer) DoesAutoWrap() bool { return false }
func (r *FullscreenRenderer) GetChar() Event { return Event{} }
func (r *FullscreenRenderer) MaxX() int { return 0 }
func (r *FullscreenRenderer) MaxY() int { return 0 }
func (r *FullscreenRenderer) GetChar() Event { return Event{} }
func (r *FullscreenRenderer) MaxX() int { return 0 }
func (r *FullscreenRenderer) MaxY() int { return 0 }
func (r *FullscreenRenderer) RefreshWindows(windows []Window) {}

4
src/tui/light.go
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@@ -624,10 +624,6 @@ func (r *LightRenderer) MaxY() int {
return r.height
}
func (r *LightRenderer) DoesAutoWrap() bool {
return false
}
func (r *LightRenderer) NewWindow(top int, left int, width int, height int, preview bool, borderStyle BorderStyle) Window {
w := &LightWindow{
renderer: r,

4
src/tui/tcell.go
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@@ -166,10 +166,6 @@ func (w *TcellWindow) Y() int {
return w.lastY
}
func (r *FullscreenRenderer) DoesAutoWrap() bool {
return false
}
func (r *FullscreenRenderer) Clear() {
_screen.Sync()
_screen.Clear()

1
src/tui/tui.go
View File

@@ -286,7 +286,6 @@ type Renderer interface {
MaxX() int
MaxY() int
DoesAutoWrap() bool
NewWindow(top int, left int, width int, height int, preview bool, borderStyle BorderStyle) Window
}