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Implement changing of context lines

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Kovid Goyal 2023-03-22 11:37:13 +05:30
parent 15b0dbb71c
commit 5086c62a81
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 35 additions and 5 deletions
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40
tools/cmd/diff/ui.go
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@ -52,6 +52,7 @@ type Handler struct {
added_count, removed_count int added_count, removed_count int
screen_size struct{ rows, columns, num_lines int } screen_size struct{ rows, columns, num_lines int }
scroll_pos, max_scroll_pos ScrollPos scroll_pos, max_scroll_pos ScrollPos
restore_position *ScrollPos
inputting_command bool inputting_command bool
statusline_message string statusline_message string
} }
@ -157,11 +158,13 @@ func (self *Handler) handle_async_result(r AsyncResult) error {
return err return err
} }
self.scroll_pos = ScrollPos{} self.scroll_pos = ScrollPos{}
// TODO: restore_position uncomment and implement below if self.restore_position != nil {
// if self.restore_position != nil { self.scroll_pos = *self.restore_position
// self.set_current_position(self.restore_position) if self.max_scroll_pos.Less(self.scroll_pos) {
// self.restore_position = nil self.scroll_pos = self.max_scroll_pos
// } }
self.restore_position = nil
}
self.draw_screen() self.draw_screen()
case HIGHLIGHT: case HIGHLIGHT:
if self.diff_map != nil && self.collection != nil { if self.diff_map != nil && self.collection != nil {
@ -319,6 +322,19 @@ func (self *Handler) scroll_to_next_match(backwards bool) bool {
return false return false
} }
func (self *Handler) change_context_count(val int) bool {
val = utils.Max(0, val)
if val == self.current_context_count {
return false
}
self.current_context_count = val
p := self.scroll_pos
self.restore_position = &p
self.generate_diff()
self.draw_screen()
return true
}
func (self *Handler) dispatch_action(name, args string) error { func (self *Handler) dispatch_action(name, args string) error {
switch name { switch name {
case `quit`: case `quit`:
@ -365,6 +381,20 @@ func (self *Handler) dispatch_action(name, args string) error {
} else { } else {
self.lp.Beep() self.lp.Beep()
} }
case `change_context`:
new_ctx := self.current_context_count
switch args {
case `all`:
new_ctx = 100000
case `default`:
new_ctx = self.original_context_count
default:
delta, _ := strconv.Atoi(args)
new_ctx += delta
}
if !self.change_context_count(new_ctx) {
self.lp.Beep()
}
} }
return nil return nil
} }