Work

keymap.go

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+/*
+Copyright © Brian Buller <brian@bullercodeworks.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package widgets
+
+import "github.com/gdamore/tcell"
+
+type KeyMap map[tcell.Key]func() bool
+
+func BlankKeyMap() KeyMap {
+	return KeyMap(make(map[tcell.Key]func() bool))
+}
+
+func NewKeyMap(m map[tcell.Key]func() bool) KeyMap {
+	return KeyMap(m)
+}
+
+func (m KeyMap) Add(k tcell.Key, do func() bool) { m[k] = do }
+func (m KeyMap) Remove(k tcell.Key) {
+	if _, ok := m[k]; ok {
+		delete(m, k)
+	}
+}
+
+func (m KeyMap) Handle(ev *tcell.EventKey) bool {
+	for k, v := range m {
+		if ev.Key() == k {
+			return v()
+		}
+	}
+	return false
+}