57 lines
1.2 KiB
Go
57 lines
1.2 KiB
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package shortcuts
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import (
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"fmt"
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"kitty/tools/tui/loop"
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"strings"
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)
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var _ = fmt.Print
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type ShortcutMap[T comparable] struct {
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leaves map[string]T
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children map[string]*ShortcutMap[T]
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}
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func (self *ShortcutMap[T]) ResolveKeyEvent(k *loop.KeyEvent, pending_keys ...string) (ac T, pending string) {
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q := self
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for _, pk := range pending_keys {
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q = self.children[pk]
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if q == nil {
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return
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}
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}
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for c, ans := range q.leaves {
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if k.MatchesPressOrRepeat(c) {
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ac = ans
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return
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}
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}
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for c := range q.children {
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if k.MatchesPressOrRepeat(c) {
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pending = c
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return
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}
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}
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return
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}
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func (self *ShortcutMap[T]) Add(ac T, keys ...string) (conflict T) {
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return self.add(ac, keys)
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}
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func (self *ShortcutMap[T]) AddOrPanic(ac T, keys ...string) {
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var zero T
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c := self.add(ac, keys)
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if c != zero {
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panic(fmt.Sprintf("The shortcut for %#v (%s) conflicted with the shortcut for %#v (%s)",
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ac, strings.Join(keys, " "), c, strings.Join(self.shortcut_for(c), " ")))
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}
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}
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func New[T comparable]() *ShortcutMap[T] {
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return &ShortcutMap[T]{leaves: make(map[string]T), children: make(map[string]*ShortcutMap[T])}
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}
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