Allow configuration for info/term bindings

This commit exposes the separate infopane bindings to configuration
from the user. This also adds support for separate bindings in the
terminal emulator view. Default bindings are provided, but can also
be rebound in bindings.json.

internal/action/termpane.go

@@ -12,6 +12,41 @@ import (
 	"github.com/zyedidia/terminal"
 )
 
+type TermKeyAction func(*TermPane)
+
+var TermBindings *KeyTree
+
+func init() {
+	TermBindings = NewKeyTree()
+}
+
+func TermKeyActionGeneral(a TermKeyAction) PaneKeyAction {
+	return func(p Pane) bool {
+		a(p.(*TermPane))
+		return true
+	}
+}
+
+func TermMapEvent(k Event, action string) {
+	switch e := k.(type) {
+	case KeyEvent, KeySequenceEvent, RawEvent:
+		termMapKey(e, action)
+	case MouseEvent:
+		termMapMouse(e, action)
+	}
+}
+
+func termMapKey(k Event, action string) {
+	if f, ok := TermKeyActions[action]; ok {
+		TermBindings.RegisterKeyBinding(k, TermKeyActionGeneral(f))
+	}
+}
+
+func termMapMouse(k MouseEvent, action string) {
+	// TODO: map mouse
+	termMapKey(k, action)
+}
+
 type TermPane struct {
 	*shell.Terminal
 	display.Window
@@ -53,6 +88,7 @@ func (t *TermPane) Tab() *Tab {
 
 func (t *TermPane) Close() {}
 
+// Quit closes this termpane
 func (t *TermPane) Quit() {
 	t.Close()
 	if len(MainTab().Panes) > 1 {
@@ -66,6 +102,7 @@ func (t *TermPane) Quit() {
 	}
 }
 
+// Unsplit removes this split
 func (t *TermPane) Unsplit() {
 	n := MainTab().GetNode(t.id)
 	n.Unsplit()
@@ -81,6 +118,26 @@ func (t *TermPane) Unsplit() {
 // copy-paste
 func (t *TermPane) HandleEvent(event tcell.Event) {
 	if e, ok := event.(*tcell.EventKey); ok {
+		ke := KeyEvent{
+			code: e.Key(),
+			mod:  e.Modifiers(),
+			r:    e.Rune(),
+		}
+		action, more := TermBindings.NextEvent(ke, nil)
+
+		if !more {
+			if action != nil {
+				action(t)
+				TermBindings.ResetEvents()
+				return
+			}
+			TermBindings.ResetEvents()
+		}
+
+		if more {
+			return
+		}
+
 		if t.Status == shell.TTDone {
 			switch e.Key() {
 			case tcell.KeyEscape, tcell.KeyCtrlQ, tcell.KeyEnter:
@@ -134,6 +191,41 @@ func (t *TermPane) HandleEvent(event tcell.Event) {
 	}
 }
 
+// Exit closes the termpane
+func (t *TermPane) Exit() {
+	t.Terminal.Close()
+	t.Quit()
+}
+
+// CommandMode opens the termpane's command mode
+func (t *TermPane) CommandMode() {
+	InfoBar.Prompt("> ", "", "TerminalCommand", nil, func(resp string, canceled bool) {
+		if !canceled {
+			t.HandleCommand(resp)
+		}
+	})
+}
+
+// NextSplit moves to the next split
+func (t *TermPane) NextSplit() {
+	a := t.tab.active
+	if a < len(t.tab.Panes)-1 {
+		a++
+	} else {
+		a = 0
+	}
+
+	t.tab.SetActive(a)
+}
+
+// HandleCommand handles a command for the term pane
 func (t *TermPane) HandleCommand(input string) {
 	InfoBar.Error("Commands are unsupported in term for now")
 }
+
+// TermKeyActions contains the list of all possible key actions the termpane could execute
+var TermKeyActions = map[string]TermKeyAction{
+	"Exit":        (*TermPane).Exit,
+	"CommandMode": (*TermPane).CommandMode,
+	"NextSplit":   (*TermPane).NextSplit,
+}