Add onBufferOpen plugin callback

cmd/micro/buffer.go

@@ -8,6 +8,7 @@ import (
 	"os/exec"
 	"os/signal"
 	"path/filepath"
+	"strings"
 	"time"
 	"unicode/utf8"
 )
@@ -114,6 +115,11 @@ func NewBuffer(txt []byte, path string) *Buffer {
 		file.Close()
 	}
 
+	_, err := Call("onBufferOpen", b)
+	if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+		TermMessage(err)
+	}
+
 	return b
 }
 

cmd/micro/micro.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"os"
 	"runtime"
+	"strings"
 
 	"github.com/go-errors/errors"
 	"github.com/layeh/gopher-luar"
@@ -247,14 +248,6 @@ func main() {
 		tab := NewTabFromView(NewView(buf))
 		tab.SetNum(len(tabs))
 		tabs = append(tabs, tab)
-		for _, t := range tabs {
-			for _, v := range t.views {
-				v.Center(false)
-				if settings["syntax"].(bool) {
-					v.matches = Match(v)
-				}
-			}
-		}
 	}
 
 	// Load all the plugin stuff
@@ -284,6 +277,18 @@ func main() {
 	jobs = make(chan JobFunction, 100)
 	events = make(chan tcell.Event)
 
+	for _, t := range tabs {
+		for _, v := range t.views {
+			_, err := Call("onBufferOpen", v.Buf)
+			if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+				TermMessage(err)
+			}
+			if settings["syntax"].(bool) {
+				v.matches = Match(v)
+			}
+		}
+	}
+
 	// Here is the event loop which runs in a separate thread
 	go func() {
 		for {

cmd/micro/plugin.go

@@ -21,7 +21,7 @@ var preInstalledPlugins = []string{
 // Call calls the lua function 'function'
 // If it does not exist nothing happens, if there is an error,
 // the error is returned
-func Call(function string, args []string) (lua.LValue, error) {
+func Call(function string, args ...interface{}) (lua.LValue, error) {
 	var luaFunc lua.LValue
 	if strings.Contains(function, ".") {
 		plugin := L.GetGlobal(strings.Split(function, ".")[0])

cmd/micro/view.go

@@ -189,6 +189,7 @@ func (v *View) OpenBuffer(buf *Buffer) {
 	v.leftCol = 0
 	v.Cursor.ResetSelection()
 	v.Relocate()
+	v.Center(false)
 	v.messages = make(map[string][]GutterMessage)
 
 	v.matches = Match(v)