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>

1 files changed, 16 insertions, 0 deletions

diff --git a/commands/msg/msg.go b/commands/msg/msg.go
new file mode 100644
index 00000000..73755aa8
--- /dev/null
+++ b/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)
+}