Add context-specific commands

aerc.go

@@ -11,10 +11,23 @@ import (
 
 	"git.sr.ht/~sircmpwn/aerc2/config"
 	"git.sr.ht/~sircmpwn/aerc2/commands"
+	"git.sr.ht/~sircmpwn/aerc2/commands/account"
 	libui "git.sr.ht/~sircmpwn/aerc2/lib/ui"
 	"git.sr.ht/~sircmpwn/aerc2/widgets"
 )
 
+func getCommands(selected libui.Drawable) []*commands.Commands {
+	switch selected.(type) {
+	case *widgets.AccountView:
+		return []*commands.Commands{
+			commands.GlobalCommands,
+			account.AccountCommands,
+		}
+	default:
+		return []*commands.Commands{commands.GlobalCommands}
+	}
+}
+
 func main() {
 	var (
 		logOut io.Writer
@@ -38,12 +51,25 @@ func main() {
 		ui   *libui.UI
 	)
 	aerc = widgets.NewAerc(conf, logger, func(cmd string) error {
-		err = commands.ExecuteCommand(aerc, cmd)
-		if _, ok := err.(commands.ErrorExit); ok {
-			ui.Exit = true
-			return nil
+		cmds := getCommands(aerc.SelectedTab())
+		for i, set := range cmds {
+			err := set.ExecuteCommand(aerc, cmd)
+			if _, ok := err.(commands.NoSuchCommand); ok {
+				if i == len(cmds) - 1 {
+					return err
+				} else {
+					continue
+				}
+			} else if _, ok := err.(commands.ErrorExit); ok {
+				ui.Exit = true
+				return nil
+			} else if err != nil {
+				return err
+			} else {
+				break
+			}
 		}
-		return err
+		return nil
 	})
 
 	ui, err = libui.Initialize(conf, aerc)

commands/account/account.go

@@ -0,0 +1,16 @@
+package account
+
+import (
+	"git.sr.ht/~sircmpwn/aerc2/commands"
+)
+
+var (
+	AccountCommands *commands.Commands
+)
+
+func register(name string, cmd commands.AercCommand) {
+	if AccountCommands == nil {
+		AccountCommands = commands.NewCommands()
+	}
+	AccountCommands.Register(name, cmd)
+}

commands/account/cf.go

@@ -1,4 +1,4 @@
-package commands
+package account
 
 import (
 	"errors"
@@ -12,7 +12,7 @@ var (
 
 func init() {
 	history = make(map[string]string)
-	Register("cf", ChangeFolder)
+	register("cf", ChangeFolder)
 }
 
 func ChangeFolder(aerc *widgets.Aerc, args []string) error {

commands/account/delete-message.go

@@ -1,4 +1,4 @@
-package commands
+package account
 
 import (
 	"errors"
@@ -7,7 +7,7 @@ import (
 )
 
 func init() {
-	Register("delete-message", DeleteMessage)
+	register("delete-message", DeleteMessage)
 }
 
 func DeleteMessage(aerc *widgets.Aerc, args []string) error {

commands/account/next-folder.go

@@ -1,4 +1,4 @@
-package commands
+package account
 
 import (
 	"errors"
@@ -9,8 +9,8 @@ import (
 )
 
 func init() {
-	Register("next-folder", NextPrevFolder)
-	Register("prev-folder", NextPrevFolder)
+	register("next-folder", NextPrevFolder)
+	register("prev-folder", NextPrevFolder)
 }
 
 func nextPrevFolderUsage(cmd string) error {

commands/account/next-message.go

@@ -1,4 +1,4 @@
-package commands
+package account
 
 import (
 	"errors"
@@ -10,8 +10,8 @@ import (
 )
 
 func init() {
-	Register("next-message", NextPrevMessage)
-	Register("prev-message", NextPrevMessage)
+	register("next-message", NextPrevMessage)
+	register("prev-message", NextPrevMessage)
 }
 
 func nextPrevMessageUsage(cmd string) error {

commands/account/select-message.go

@@ -1,4 +1,4 @@
-package commands
+package account
 
 import (
 	"errors"
@@ -8,7 +8,7 @@ import (
 )
 
 func init() {
-	Register("select-message", SelectMessage)
+	register("select-message", SelectMessage)
 }
 
 func SelectMessage(aerc *widgets.Aerc, args []string) error {

commands/cd.go

@@ -13,7 +13,7 @@ var (
 )
 
 func init() {
-	Register("cd", ChangeDirectory)
+	register("cd", ChangeDirectory)
 }
 
 func ChangeDirectory(aerc *widgets.Aerc, args []string) error {

commands/commands.go

@@ -10,18 +10,32 @@ import (
 
 type AercCommand func(aerc *widgets.Aerc, args []string) error
 
-var (
-	commands map[string]AercCommand
-)
+type Commands map[string]AercCommand
 
-func Register(name string, cmd AercCommand) {
-	if commands == nil {
-		commands = make(map[string]AercCommand)
-	}
-	commands[name] = cmd
+func NewCommands() *Commands {
+	cmds := Commands(make(map[string]AercCommand))
+	return &cmds
 }
 
-func ExecuteCommand(aerc *widgets.Aerc, cmd string) error {
+func (cmds *Commands) dict() map[string]AercCommand {
+	return map[string]AercCommand(*cmds)
+}
+
+func (cmds *Commands) Register(name string, cmd AercCommand) {
+	cmds.dict()[name] = cmd
+}
+
+type NoSuchCommand string
+
+func (err NoSuchCommand) Error() string {
+	return "Unknown command " + string(err)
+}
+
+type CommandSource interface {
+	Commands() *Commands
+}
+
+func (cmds *Commands) ExecuteCommand(aerc *widgets.Aerc, cmd string) error {
 	args, err := shlex.Split(cmd)
 	if err != nil {
 		return err
@@ -29,8 +43,8 @@ func ExecuteCommand(aerc *widgets.Aerc, cmd string) error {
 	if len(args) == 0 {
 		return errors.New("Expected a command.")
 	}
-	if fn, ok := commands[args[0]]; ok {
+	if fn, ok := cmds.dict()[args[0]]; ok {
 		return fn(aerc, args)
 	}
-	return errors.New("Unknown command " + args[0])
+	return NoSuchCommand(args[0])
 }

commands/global.go

@@ -0,0 +1,12 @@
+package commands
+
+var (
+	GlobalCommands *Commands
+)
+
+func register(name string, cmd AercCommand) {
+	if GlobalCommands == nil {
+		GlobalCommands = NewCommands()
+	}
+	GlobalCommands.Register(name, cmd)
+}

commands/next-tab.go

@@ -9,8 +9,8 @@ import (
 )
 
 func init() {
-	Register("next-tab", NextPrevTab)
-	Register("prev-tab", NextPrevTab)
+	register("next-tab", NextPrevTab)
+	register("prev-tab", NextPrevTab)
 }
 
 func nextPrevTabUsage(cmd string) error {

commands/quit.go

@@ -7,7 +7,7 @@ import (
 )
 
 func init() {
-	Register("quit", ChangeQuit)
+	register("quit", CommandQuit)
 }
 
 type ErrorExit int
@@ -16,7 +16,7 @@ func (err ErrorExit) Error() string {
 	return "exit"
 }
 
-func ChangeQuit(aerc *widgets.Aerc, args []string) error {
+func CommandQuit(aerc *widgets.Aerc, args []string) error {
 	if len(args) != 1 {
 		return errors.New("Usage: quit")
 	}

commands/term-close.go

@@ -8,7 +8,7 @@ import (
 
 func init() {
 	// TODO: Move this command into a terminal-specific command set
-	Register("close", TermClose)
+	register("close", TermClose)
 }
 
 func TermClose(aerc *widgets.Aerc, args []string) error {

commands/term.go

@@ -11,7 +11,7 @@ import (
 )
 
 func init() {
-	Register("term", Term)
+	register("term", Term)
 }
 
 func Term(aerc *widgets.Aerc, args []string) error {