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65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
// Copyright 2014 The gocui Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package gocui
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import (
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"github.com/gdamore/tcell/v2"
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)
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// eventBinding are used to link a given key-press event with a handler.
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type eventBinding struct {
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viewName string
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ev tcell.Event // ignore the Time
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handler func(*Gui, *View) error
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}
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// newKeybinding returns a new eventBinding object for a key event.
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func newKeybinding(viewname string, key tcell.Key, ch rune, mod tcell.ModMask, handler func(*Gui, *View) error) (kb *eventBinding) {
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kb = &eventBinding{
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viewName: viewname,
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ev: tcell.NewEventKey(key, ch, mod),
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handler: handler,
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}
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return kb
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}
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// newKeybinding returns a new eventBinding object for a mouse event.
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func newMouseBinding(viewname string, btn tcell.ButtonMask, mod tcell.ModMask, handler func(*Gui, *View) error) (kb *eventBinding) {
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kb = &eventBinding{
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viewName: viewname,
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ev: tcell.NewEventMouse(0, 0, btn, mod),
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handler: handler,
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}
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return kb
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}
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func (kb *eventBinding) matchEvent(e tcell.Event) bool {
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// TODO: check mask not ==mod?
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switch tev := e.(type) {
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case *tcell.EventKey:
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if kbe, ok := kb.ev.(*tcell.EventKey); ok {
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if tev.Key() == tcell.KeyRune {
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return tev.Key() == kbe.Key() && tev.Rune() == kbe.Rune() && tev.Modifiers() == kbe.Modifiers()
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}
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return tev.Key() == kbe.Key() && tev.Modifiers() == kbe.Modifiers()
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}
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case *tcell.EventMouse:
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if kbe, ok := kb.ev.(*tcell.EventMouse); ok {
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return kbe.Buttons() == tev.Buttons() && kbe.Modifiers() == tev.Modifiers()
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}
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}
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return false
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}
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// matchView returns if the eventBinding matches the current view.
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func (kb *eventBinding) matchView(v *View) bool {
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if kb.viewName == "" {
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return true
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}
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return v != nil && kb.viewName == v.name
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}
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