From a79e964cb6fc35b95a41b8069b71a2b7c2424406 Mon Sep 17 00:00:00 2001
From: Zachary Yedidia <zyedidia@gmail.com>
Date: Wed, 8 Jun 2016 17:47:48 -0400
Subject: [PATCH] Make tabs respond to mouse events

---
 cmd/micro/bindings.go | 15 ++++++++---
 cmd/micro/micro.go    |  3 +++
 cmd/micro/tab.go      | 60 ++++++++++++++++++++++++++++++++++++++++---
 runtime/help/help.md  |  1 +
 4 files changed, 71 insertions(+), 8 deletions(-)

diff --git a/cmd/micro/bindings.go b/cmd/micro/bindings.go
index 14de9ac5..ff888261 100644
--- a/cmd/micro/bindings.go
+++ b/cmd/micro/bindings.go
@@ -1097,8 +1097,8 @@ func (v *View) Quit() bool {
 					curTab--
 				}
 				if curTab == 0 {
-					tab := tabs[curTab]
-					tab.views[tab.curView].Resize(screen.Size())
+					CurView().Resize(screen.Size())
+					CurView().matches = Match(CurView())
 				}
 			}
 		} else {
@@ -1114,6 +1114,13 @@ func (v *View) AddTab() bool {
 	tab.SetNum(len(tabs))
 	tabs = append(tabs, tab)
 	curTab++
+	if len(tabs) == 2 {
+		for _, t := range tabs {
+			for _, v := range t.views {
+				v.Resize(screen.Size())
+			}
+		}
+	}
 	return true
 }
 
@@ -1121,14 +1128,14 @@ func (v *View) LastTab() bool {
 	if curTab > 0 {
 		curTab--
 	}
-	return true
+	return false
 }
 
 func (v *View) NextTab() bool {
 	if curTab < len(tabs)-1 {
 		curTab++
 	}
-	return true
+	return false
 }
 
 // None is no action
diff --git a/cmd/micro/micro.go b/cmd/micro/micro.go
index 4c9ea68f..3ff79e6d 100644
--- a/cmd/micro/micro.go
+++ b/cmd/micro/micro.go
@@ -257,6 +257,9 @@ func main() {
 
 		// Wait for the user's action
 		event := screen.PollEvent()
+		if TabbarHandleMouseEvent(event) {
+			continue
+		}
 
 		if searching {
 			// Since searching is done in real time, we need to redraw every time
diff --git a/cmd/micro/tab.go b/cmd/micro/tab.go
index d4d4d498..cada1b72 100644
--- a/cmd/micro/tab.go
+++ b/cmd/micro/tab.go
@@ -1,5 +1,11 @@
 package main
 
+import (
+	"sort"
+
+	"github.com/zyedidia/tcell"
+)
+
 type Tab struct {
 	// This contains all the views in this tab
 	// There is generally only one view per tab, but you can have
@@ -30,11 +36,10 @@ func CurView() *View {
 	return curTab.views[curTab.curView]
 }
 
-func DisplayTabs() {
-	if len(tabs) <= 1 {
-		return
-	}
+func TabbarString() (string, map[int]int) {
 	str := ""
+	indicies := make(map[int]int)
+	indicies[0] = 0
 	for i, t := range tabs {
 		if i == curTab {
 			str += "["
@@ -47,8 +52,55 @@ func DisplayTabs() {
 		} else {
 			str += " "
 		}
+		indicies[len(str)-1] = i + 1
 		str += " "
 	}
+	return str, indicies
+}
+
+func TabbarHandleMouseEvent(event tcell.Event) bool {
+	if len(tabs) <= 1 {
+		return false
+	}
+
+	switch e := event.(type) {
+	case *tcell.EventMouse:
+		button := e.Buttons()
+		if button == tcell.Button1 {
+			x, y := e.Position()
+			if y != 0 {
+				return false
+			}
+			str, indicies := TabbarString()
+			if x >= len(str) {
+				return false
+			}
+			var tabnum int
+			var keys []int
+			for k := range indicies {
+				keys = append(keys, k)
+			}
+			sort.Ints(keys)
+			for _, k := range keys {
+				if x <= k {
+					tabnum = indicies[k] - 1
+					break
+				}
+			}
+			curTab = tabnum
+			return true
+		}
+	}
+
+	return false
+}
+
+func DisplayTabs() {
+	if len(tabs) <= 1 {
+		return
+	}
+
+	str, _ := TabbarString()
 
 	tabBarStyle := defStyle.Reverse(true)
 	if style, ok := colorscheme["tabbar"]; ok {
diff --git a/runtime/help/help.md b/runtime/help/help.md
index 79f017c2..02ecffca 100644
--- a/runtime/help/help.md
+++ b/runtime/help/help.md
@@ -63,6 +63,7 @@ you can rebind them to your liking.
     "CtrlD":          "DuplicateLine",
     "CtrlV":          "Paste",
     "CtrlA":          "SelectAll",
+    "CtrlT":          "AddTab"
     "Home":           "Start",
     "End":            "End",
     "PageUp":         "CursorPageUp",