Download audio files support from the details dialogue for songs

src/controller/mainController.py

@@ -1,9 +1,11 @@
 # -*- coding: utf-8 -*-
+import utils
 import widgetUtils
 import messages
 import buffers
 from pubsub import pub
 from mysc.repeating_timer import RepeatingTimer
+from mysc.thread_utils import call_threaded
 from sessionmanager import session
 from wxUI import (mainWindow)
 
@@ -39,6 +41,7 @@ class Controller(object):
 		self.buffers.append(audio)
 		self.window.add_buffer(audio.tab, _(u"My audios"))
 		pub.subscribe(self.in_post, "posted")
+		pub.subscribe(self.download, "download-file")
 
 	def login(self):
 		self.window.change_status(_(u"Logging in VK"))
@@ -61,3 +64,6 @@ class Controller(object):
 			if hasattr(i, "get_items"):
 				i.get_items()
 				print "executed for %s" % (i.name)
+
+	def download(self, url, filename):
+		call_threaded(utils.download_file, url, filename, self.window)

src/controller/posts.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+import os
 import arrow
 import messages
 import languageHandler
@@ -193,6 +194,7 @@ class audio(postController):
 		self.post = postObject
 		self.dialog = postDialogs.audio()
 		self.fill_information()
+		widgetUtils.connect_event(self.dialog.download, widgetUtils.BUTTON_PRESSED, self.download)
 
 	def fill_information(self):
 		if self.post.has_key("artist"):
@@ -208,3 +210,9 @@ class audio(postController):
 		if self.post.has_key("lyrics_id"):
 			l = self.session.vk.client.audio.getLyrics(lyrics_id=int(self.post["lyrics_id"]))
 			self.dialog.set("lyric", l["text"])
+
+	def download(self, *args, **kwargs):
+		f = u"{0} - {1}.mp3".format(self.post["title"], self.post["artist"])
+		path = self.dialog.get_destination_path(f)
+		if path != None:
+			pub.sendMessage("download-file", url=self.post["url"], filename=f)

src/utils.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+import requests
 import re
 
 url_re = re.compile("(?:\w+://|www\.)[^ ,.?!#%=+][^ ]*")
@@ -32,3 +33,20 @@ def seconds_to_string(seconds, precision=0):
 
 def find_urls_in_text(text):
 	return [s.strip(bad_chars) for s in url_re.findall(text)]
+
+def download_file(url, local_filename, window):
+	r = requests.get(url, stream=True)
+	window.change_status(_(u"Downloading {0}").format(local_filename,))
+	total_length = r.headers.get("content-length")
+	dl = 0
+	total_length = int(total_length)
+	with open(local_filename, 'wb') as f:
+		for chunk in r.iter_content(chunk_size=64): 
+			if chunk: # filter out keep-alive new chunks
+				dl += len(chunk)
+				f.write(chunk)
+				done = int(100 * dl / total_length)
+				msg = _(u"Downloading {0} ({1}%)").format(local_filename, done)
+				window.change_status(msg)
+	window.change_status(_(u"Ready"))
+	return local_filename

src/wxUI/dialogs/postDialogs.py

@@ -140,3 +140,8 @@ class audio(widgetUtils.BaseDialog):
 		bbox.Add(self.download, 0, wx.ALL, 5)
 		bbox.Add(close, 0, wx.ALL, 5)
 
+	def get_destination_path(self, filename):
+		saveFileDialog = wx.FileDialog(self, _(u"Save this file"), "", filename, _(u"Audio Files(*.mp3)|*.mp3"), wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)
+		if saveFileDialog.ShowModal() == wx.ID_OK:
+			return saveFileDialog.GetPath()
+		saveFileDialog.Destroy()