download_process bug

sysgo/UI/download_process_page.go

@@ -24,6 +24,7 @@ type DownloadProcessPage struct {
   DST_DIR string
   Value   int
   PngSize map[string][2]int
+  Doing bool
   
   FileNameLabel LabelInterface
   SizeLabel     LabelInterface
@@ -121,6 +122,7 @@ Loop:
 			self.resp.BytesComplete(),
 			self.resp.Size,
 			100*self.resp.Progress())
+      
       self.Value = int(100.0*self.resp.Progress())
       total := float64(self.resp.Size)/1000.0/1000.0
       downloaded := float64(self.resp.BytesComplete())/1000.0/1000.0
@@ -129,8 +131,6 @@ Loop:
       self.SizeLabel.SetText(lb_str)
     
       self.FileNameLabel.SetText(filepath.Base(self.resp.Filename))
-    
-    
       self.Screen.Draw()
       self.Screen.SwapAndShow()
     
@@ -139,11 +139,13 @@ Loop:
       fmt.Println("download is complete ",self.Value)
       self.Value = 0 
       self.TheTicker.Stop()
-      
+      self.Doing=false
 			break Loop
 		}
   }
   
+  self.Doing=false
+  
 	if err := self.resp.Err(); err != nil {
     self.DownloadErr()
 		fmt.Fprintf(os.Stderr, "Download failed: %v\n", err)
@@ -224,8 +226,10 @@ func (self *DownloadProcessPage) StartDownload(_url,dst_dir string) {
   
   self.TheTicker = gotime.NewTicker(100 * gotime.Millisecond)
   
+  if self.Doing = false {
     go self.UpdateProcessInterval()
-  
+    self.Doing = true
+  }
 }
 
 func (self *DownloadProcessPage) StopDownload() {