From 33155f7496a818a1ed83fe49cccb63be7842bc81 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Mon, 30 Jun 2014 09:57:44 -0400
Subject: Reverted everything back to the old API.

---
 progressbar.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'progressbar.go')

diff --git a/progressbar.go b/progressbar.go
index 875a262..e7c7149 100644
--- a/progressbar.go
+++ b/progressbar.go
@@ -2,11 +2,16 @@
 
 package ui
 
+import (
+	"sync"
+)
+
 // A ProgressBar is a horizontal rectangle that fills up from left to right to indicate the progress of a long-running task.
 // This progress is represented by an integer within the range [0,100], representing a percentage.
 // Alternatively, a progressbar can show an animation indicating that progress is being made but how much is indeterminate.
 // Newly-created ProgressBars default to showing 0% progress.
 type ProgressBar struct {
+	lock     sync.Mutex
 	created  bool
 	sysData  *sysData
 	initProg int
@@ -25,6 +30,9 @@ func NewProgressBar() *ProgressBar {
 // Otherwise, SetProgress panics.
 // Calling SetProgress(-1) repeatedly will neither leave indeterminate mode nor stop any animation involved in indeterminate mode indefinitely; any other side-effect of doing so is implementation-defined.
 func (p *ProgressBar) SetProgress(percent int) {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
 	if percent < -1 || percent > 100 {
 		panic("percent value out of range")
 	}
@@ -36,6 +44,9 @@ func (p *ProgressBar) SetProgress(percent int) {
 }
 
 func (p *ProgressBar) make(window *sysData) error {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
 	err := p.sysData.make(window)
 	if err != nil {
 		return err
-- 
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