widget: Add ProvidesMessage interface

Consists of 3 functions
* Store: Access to MessageStore type
* SelectedAccount: Access to Account widget that the target widget
belongs to
* SelectedMessage: Current message (selected in msglist or the one we
are viewing)

Signed-off-by: Kevin Kuehler <keur@ocf.berkeley.edu>

commands/account/view.go

@@ -24,7 +24,7 @@ func ViewMessage(aerc *widgets.Aerc, args []string) error {
 	if msg == nil {
 		return nil
 	}
-	viewer := widgets.NewMessageViewer(aerc.Config(), store, msg)
+	viewer := widgets.NewMessageViewer(acct, aerc.Config(), store, msg)
 	aerc.NewTab(viewer, msg.Envelope.Subject)
 	return nil
 }

commands/msg/copy.go

@@ -1,4 +1,4 @@
-package account
+package msg
 
 import (
 	"errors"
@@ -19,12 +19,13 @@ func Copy(aerc *widgets.Aerc, args []string) error {
 	if len(args) != 2 {
 		return errors.New("Usage: mv <folder>")
 	}
-	acct := aerc.SelectedAccount()
+	widget := aerc.SelectedTab().(widgets.ProvidesMessage)
+	acct := widget.SelectedAccount()
 	if acct == nil {
 		return errors.New("No account selected")
 	}
-	msg := acct.Messages().Selected()
-	store := acct.Messages().Store()
+	msg := widget.SelectedMessage()
+	store := widget.Store()
 	store.Copy([]uint32{msg.Uid}, args[1], func(msg types.WorkerMessage) {
 		switch msg := msg.(type) {
 		case *types.Done:

commands/msg/delete.go

@@ -1,4 +1,4 @@
-package account
+package msg
 
 import (
 	"errors"
@@ -19,12 +19,18 @@ func DeleteMessage(aerc *widgets.Aerc, args []string) error {
 	if len(args) != 1 {
 		return errors.New("Usage: :delete")
 	}
-	acct := aerc.SelectedAccount()
+
+	widget := aerc.SelectedTab().(widgets.ProvidesMessage)
+	acct := widget.SelectedAccount()
 	if acct == nil {
 		return errors.New("No account selected")
 	}
-	store := acct.Messages().Store()
-	msg := acct.Messages().Selected()
+	store := widget.Store()
+	msg := widget.SelectedMessage()
+	_, isMsgView := widget.(*widgets.MessageViewer)
+	if isMsgView {
+		aerc.RemoveTab(widget)
+	}
 	acct.Messages().Next()
 	store.Delete([]uint32{msg.Uid}, func(msg types.WorkerMessage) {
 		switch msg := msg.(type) {

commands/msg/move.go

@@ -1,4 +1,4 @@
-package account
+package msg
 
 import (
 	"errors"
@@ -19,12 +19,17 @@ func Move(aerc *widgets.Aerc, args []string) error {
 	if len(args) != 2 {
 		return errors.New("Usage: mv <folder>")
 	}
-	acct := aerc.SelectedAccount()
+	widget := aerc.SelectedTab().(widgets.ProvidesMessage)
+	acct := widget.SelectedAccount()
 	if acct == nil {
 		return errors.New("No account selected")
 	}
-	msg := acct.Messages().Selected()
-	store := acct.Messages().Store()
+	msg := widget.SelectedMessage()
+	store := widget.Store()
+	_, isMsgView := widget.(*widgets.MessageViewer)
+	if isMsgView {
+		aerc.RemoveTab(widget)
+	}
 	acct.Messages().Next()
 	store.Move([]uint32{msg.Uid}, args[1], func(msg types.WorkerMessage) {
 		switch msg := msg.(type) {

commands/msg/msg.go

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

commands/msg/reply.go

@@ -1,4 +1,4 @@
-package account
+package msg
 
 import (
 	"bufio"
@@ -63,11 +63,15 @@ func Reply(aerc *widgets.Aerc, args []string) error {
 		}
 	}
 
-	acct := aerc.SelectedAccount()
+	widget := aerc.SelectedTab().(widgets.ProvidesMessage)
+	acct := widget.SelectedAccount()
+	if acct == nil {
+		return errors.New("No account selected")
+	}
 	conf := acct.AccountConfig()
 	us, _ := gomail.ParseAddress(conf.From)
-	store := acct.Messages().Store()
-	msg := acct.Messages().Selected()
+	store := widget.Store()
+	msg := widget.SelectedMessage()
 	acct.Logger().Println("Replying to email " + msg.Envelope.MessageId)
 
 	var (