diff options
Diffstat (limited to 'progressbar.go')
| -rw-r--r-- | progressbar.go | 11 |
1 files changed, 11 insertions, 0 deletions
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 |