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/
ui.go
158 lines (132 loc) · 3.2 KB
/
ui.go
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package main
import (
"fmt"
"github.com/gizak/termui"
"github.com/nareix/curl"
"os"
"sort"
"time"
)
var (
ui Ui
)
func NewUi() Ui {
headerWidget := termui.NewPar(fmt.Sprintf("podcastd v%s\nCopyright 2015 Philippe Gerber\nhttps://github.com/bigwhoop/podcastd", VERSION))
headerWidget.Height = 5
headerWidget.HasBorder = false
headerWidget.PaddingTop = 1
headerWidget.PaddingBottom = 1
headerWidget.PaddingLeft = 1
infoWidget := termui.NewPar("")
infoWidget.HasBorder = false
infoWidget.Text = fmt.Sprintf("Press 'q' to quit")
feedsWidget := termui.NewList()
feedsWidget.Border.Label = "Feeds"
return Ui{
termui.TermWidth(),
headerWidget,
infoWidget,
feedsWidget,
make(map[string]bool, 0),
make([]*termui.Gauge, 0),
make(map[string]curl.ProgressStatus, 0),
}
}
type Ui struct {
gridWidth int
headerWidget *termui.Par
infoWidget *termui.Par
feedsWidget *termui.List
feeds map[string]bool
activeDownloadWidgets []*termui.Gauge
activeDownloads map[string]curl.ProgressStatus
}
func (u Ui) refresh() {
grid := termui.NewGrid(
termui.NewRow(
termui.NewCol(9, 0, u.headerWidget),
termui.NewCol(3, 0, u.infoWidget),
),
termui.NewRow(
termui.NewCol(12, 0, u.feedsWidget),
),
)
for _, widget := range u.activeDownloadWidgets {
grid.AddRows(
termui.NewRow(
termui.NewCol(12, 0, widget),
),
)
}
grid.Width = u.gridWidth
grid.Align()
termui.Render(grid)
}
func (u Ui) SetFeedStatus(uri string, loading bool) {
u.feeds[uri] = loading
u.refreshFeedsWidget()
}
func (u *Ui) SetActiveDownload(uri string, status curl.ProgressStatus) {
u.activeDownloads[uri] = status
u.refreshActiveDownloadWidgets()
}
func (u *Ui) RemoveActiveDownload(uri string) {
delete(u.activeDownloads, uri)
u.refreshActiveDownloadWidgets()
}
func (u *Ui) refreshFeedsWidget() {
uris := make([]string, 0, len(u.feeds))
for uri, isLoading := range u.feeds {
if isLoading {
uri += " (loading)"
}
uris = append(uris, uri)
}
sort.Strings(uris)
u.feedsWidget.Items = uris
u.feedsWidget.Height = len(uris) + 2
}
func (u *Ui) refreshActiveDownloadWidgets() {
u.activeDownloadWidgets = make([]*termui.Gauge, 0, len(u.activeDownloads))
uris := make([]string, 0, len(u.activeDownloads))
for uri, _ := range u.activeDownloads {
uris = append(uris, uri)
}
sort.Strings(uris)
for _, uri := range uris {
progress := u.activeDownloads[uri]
widget := termui.NewGauge()
widget.Height = 3
widget.Percent = int(progress.Percent * 100)
widget.Border.Label = "Downloading: " + uri
widget.Label = fmt.Sprintf("{{percent}}%% (%s)", curl.PrettySpeedString(progress.Speed))
u.activeDownloadWidgets = append(u.activeDownloadWidgets, widget)
}
}
func init() {
err := termui.Init()
if err != nil {
panic(err)
}
termui.UseTheme("default")
ui = NewUi()
refreshTicker := time.NewTicker(time.Millisecond * 50)
evt := termui.EventCh()
ui.refresh()
go func() {
for {
select {
case e := <-evt:
if e.Type == termui.EventKey && e.Ch == 'q' {
os.Exit(1)
}
if e.Type == termui.EventResize {
ui.gridWidth = termui.TermWidth()
ui.refresh()
}
case <-refreshTicker.C:
ui.refresh()
}
}
}()
}