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Added indeterminate ProgressBars to the portable frontend and fixed up ProgressBar's documentation.

This commit is contained in:
Pietro Gagliardi 2014-03-12 17:12:41 -04:00
parent 6be3c2835f
commit bf093d534c
1 changed files with 9 additions and 4 deletions
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13
progressbar.go
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@ -6,7 +6,9 @@ import (
)
// 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 typically a percentage, so within the range [0,100].
// 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
@ -21,13 +23,16 @@ func NewProgressBar() *ProgressBar {
}
}
// SetProgress sets the currently indicated progress amount on the ProgressBar. If this amount is outside the range [0,100] (ideally -1), the function will panic (TODO make it indeterminate).
// SetProgress sets the currently indicated progress amount on the ProgressBar.
// If percent is in the range [0,100], the progressBar shows that much percent complete.
// If percent is -1, the ProgressBar is made indeterminate.
// Otherwise, SetProgress panics.
func (p *ProgressBar) SetProgress(percent int) {
p.lock.Lock()
defer p.lock.Unlock()
if percent < 0 || percent > 100 {
panic("invalid percent") // TODO
if percent < -1 || percent > 100 {
panic("percent value out of range")
}
if p.created {
p.sysData.setProgress(percent)