Create tab struct and reorganize tab bar

cmd/micro/tab.go

@@ -0,0 +1,65 @@
+package main
+
+type Tab struct {
+	// This contains all the views in this tab
+	// There is generally only one view per tab, but you can have
+	// multiple views with splits
+	views []*View
+	// This is the current view for this tab
+	curView int
+	// Generally this is the name of the current view's buffer
+	name string
+}
+
+func NewTabFromView(v *View) *Tab {
+	t := new(Tab)
+	t.views = append(t.views, v)
+	t.views[0].Num = 0
+	return t
+}
+
+func (t *Tab) SetNum(num int) {
+	for _, v := range t.views {
+		v.TabNum = num
+	}
+}
+
+// CurView returns the current view
+func CurView() *View {
+	curTab := tabs[curTab]
+	return curTab.views[curTab.curView]
+}
+
+func DisplayTabs() {
+	str := ""
+	for i, t := range tabs {
+		if i == curTab {
+			str += "["
+		} else {
+			str += " "
+		}
+		str += t.views[t.curView].Buf.Name
+		if i == curTab {
+			str += "]"
+		} else {
+			str += " "
+		}
+		str += " "
+	}
+
+	tabBarStyle := defStyle.Reverse(true)
+	if style, ok := colorscheme["tabbar"]; ok {
+		tabBarStyle = style
+	}
+
+	// Maybe there is a unicode filename?
+	fileRunes := []rune(str)
+	w, _ := screen.Size()
+	for x := 0; x < w; x++ {
+		if x < len(fileRunes) {
+			screen.SetContent(x, 0, fileRunes[x], nil, tabBarStyle)
+		} else {
+			screen.SetContent(x, 0, ' ', nil, tabBarStyle)
+		}
+	}
+}