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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| package termui | ||
|
|
||
| import ( | ||
| "image" | ||
| "strings" | ||
| "unicode/utf8" | ||
|
|
||
| . "github.com/gizak/termui/v3" | ||
| rw "github.com/mattn/go-runewidth" | ||
| "github.com/xxxserxxx/gotop/utils" | ||
| ) | ||
|
|
||
| const ( | ||
| ELLIPSIS = "…" | ||
| CURSOR = " " | ||
| ) | ||
|
|
||
| type Entry struct { | ||
| Block | ||
|
|
||
| Style Style | ||
|
|
||
| Label string | ||
| Value string | ||
| ShowWhenEmpty bool | ||
| UpdateCallback func(string) | ||
|
|
||
| editing bool | ||
| } | ||
|
|
||
| func (self *Entry) SetEditing(editing bool) { | ||
| self.editing = editing | ||
| } | ||
|
|
||
| func (self *Entry) update() { | ||
| if self.UpdateCallback != nil { | ||
| self.UpdateCallback(self.Value) | ||
| } | ||
| } | ||
|
|
||
| // HandleEvent handles input events if the entry is being edited. | ||
| // Returns true if the event was handled. | ||
| func (self *Entry) HandleEvent(e Event) bool { | ||
| if !self.editing { | ||
| return false | ||
| } | ||
| if utf8.RuneCountInString(e.ID) == 1 { | ||
| self.Value += e.ID | ||
| self.update() | ||
| return true | ||
| } | ||
| switch e.ID { | ||
| case "<C-c>", "<Escape>": | ||
| self.Value = "" | ||
| self.editing = false | ||
| self.update() | ||
| case "<Enter>": | ||
| self.editing = false | ||
| case "<Backspace>": | ||
| if self.Value != "" { | ||
| r := []rune(self.Value) | ||
| self.Value = string(r[:len(r)-1]) | ||
| self.update() | ||
| } | ||
| case "<Space>": | ||
| self.Value += " " | ||
| self.update() | ||
| default: | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
|
||
| func (self *Entry) Draw(buf *Buffer) { | ||
| if self.Value == "" && !self.editing && !self.ShowWhenEmpty { | ||
| return | ||
| } | ||
|
|
||
| style := self.Style | ||
| label := self.Label | ||
| if self.editing { | ||
| label += "[" | ||
| style = NewStyle(style.Fg, style.Bg, ModifierBold) | ||
| } | ||
| cursorStyle := NewStyle(style.Bg, style.Fg, ModifierClear) | ||
|
|
||
| p := image.Pt(self.Min.X, self.Min.Y) | ||
| buf.SetString(label, style, p) | ||
| p.X += rw.StringWidth(label) | ||
|
|
||
| tail := " " | ||
| if self.editing { | ||
| tail = "] " | ||
| } | ||
|
|
||
| maxLen := self.Max.X - p.X - rw.StringWidth(tail) | ||
| if self.editing { | ||
| maxLen -= 1 // for cursor | ||
| } | ||
| value := utils.TruncateFront(self.Value, maxLen, ELLIPSIS) | ||
| buf.SetString(value, self.Style, p) | ||
| p.X += rw.StringWidth(value) | ||
|
|
||
| if self.editing { | ||
| buf.SetString(CURSOR, cursorStyle, p) | ||
| p.X += rw.StringWidth(CURSOR) | ||
| if remaining := maxLen - rw.StringWidth(value); remaining > 0 { | ||
| buf.SetString(strings.Repeat(" ", remaining), self.TitleStyle, p) | ||
| p.X += remaining | ||
| } | ||
| } | ||
| buf.SetString(tail, style, p) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| rw "github.com/mattn/go-runewidth" | ||
| ) | ||
|
|
||
| func TruncateFront(s string, w int, prefix string) string { | ||
| if rw.StringWidth(s) <= w { | ||
| return s | ||
| } | ||
| r := []rune(s) | ||
| pw := rw.StringWidth(prefix) | ||
| w -= pw | ||
| width := 0 | ||
| i := len(r) - 1 | ||
| for ; i >= 0; i-- { | ||
| cw := rw.RuneWidth(r[i]) | ||
| width += cw | ||
| if width > w { | ||
| break | ||
| } | ||
| } | ||
| return prefix + string(r[i+1:len(r)]) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package utils | ||
|
|
||
| import "testing" | ||
|
|
||
| const ( | ||
| ELLIPSIS = "…" | ||
| ) | ||
|
|
||
| func TestTruncateFront(t *testing.T) { | ||
| tests := []struct { | ||
| s string | ||
| w int | ||
| prefix string | ||
| want string | ||
| }{ | ||
| {"", 0, ELLIPSIS, ""}, | ||
| {"", 1, ELLIPSIS, ""}, | ||
| {"", 10, ELLIPSIS, ""}, | ||
|
|
||
| {"abcdef", 0, ELLIPSIS, ELLIPSIS}, | ||
| {"abcdef", 1, ELLIPSIS, ELLIPSIS}, | ||
| {"abcdef", 2, ELLIPSIS, ELLIPSIS + "f"}, | ||
| {"abcdef", 5, ELLIPSIS, ELLIPSIS + "cdef"}, | ||
| {"abcdef", 6, ELLIPSIS, "abcdef"}, | ||
| {"abcdef", 10, ELLIPSIS, "abcdef"}, | ||
|
|
||
| {"abcdef", 0, "...", "..."}, | ||
| {"abcdef", 1, "...", "..."}, | ||
| {"abcdef", 3, "...", "..."}, | ||
| {"abcdef", 4, "...", "...f"}, | ||
| {"abcdef", 5, "...", "...ef"}, | ||
| {"abcdef", 6, "...", "abcdef"}, | ||
| {"abcdef", 10, "...", "abcdef"}, | ||
|
|
||
| {"｟full～width｠", 15, ".", "｟full～width｠"}, | ||
| {"｟full～width｠", 14, ".", ".full～width｠"}, | ||
| {"｟full～width｠", 13, ".", ".ull～width｠"}, | ||
| {"｟full～width｠", 10, ".", ".～width｠"}, | ||
| {"｟full～width｠", 9, ".", ".width｠"}, | ||
| {"｟full～width｠", 8, ".", ".width｠"}, | ||
| {"｟full～width｠", 3, ".", ".｠"}, | ||
| {"｟full～width｠", 2, ".", "."}, | ||
| } | ||
|
|
||
| for _, test := range tests { | ||
| if got := TruncateFront(test.s, test.w, test.prefix); got != test.want { | ||
| t.Errorf("TruncateFront(%q, %d, %q) = %q; want %q", test.s, test.w, test.prefix, got, test.want) | ||
| } | ||
| } | ||
| } |
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