62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
package model
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import (
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"sort"
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)
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// SuggestionListener listens for suggestions.
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type SuggestionListener interface {
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BuffWatcher
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// SuggestionChanged notifies suggestion changes.
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SuggestionChanged([]string)
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}
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// SuggestionFunc produces suggestions.
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type SuggestionFunc func(s string) sort.StringSlice
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// FishBuff represents a suggestion buffer.
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type FishBuff struct {
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*CmdBuff
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suggestionFn SuggestionFunc
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}
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// NewFishBuff returns a new command buffer.
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func NewFishBuff(key rune, kind BufferKind) *FishBuff {
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return &FishBuff{CmdBuff: NewCmdBuff(key, kind)}
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}
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// SetSuggestionFn sets up suggestions.
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func (f *FishBuff) SetSuggestionFn(fn SuggestionFunc) {
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f.suggestionFn = fn
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}
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// Delete removes the last character from the buffer.
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func (f *FishBuff) Delete() {
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f.CmdBuff.Delete()
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if f.suggestionFn == nil {
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return
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}
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cc := f.suggestionFn(string(f.buff))
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f.fireSuggest(cc)
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}
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// Add adds a new charater to the buffer.
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func (f *FishBuff) Add(r rune) {
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f.CmdBuff.Add(r)
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if f.suggestionFn == nil {
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return
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}
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cc := f.suggestionFn(string(f.buff))
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f.fireSuggest(cc)
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}
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func (f *FishBuff) fireSuggest(cc []string) {
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for _, l := range f.listeners {
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if s, ok := l.(SuggestionListener); ok {
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s.SuggestionChanged(cc)
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}
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}
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}
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