From f1808a0cc37599d6bfdb12c5848c57051fa8ad18 Mon Sep 17 00:00:00 2001
From: Andrew Resch <andrewresch@gmail.com>
Date: Wed, 27 Feb 2008 07:43:47 +0000
Subject: [PATCH] Add pausing and resuming of components.  This stops the
 update() timer for the component and restarts it upon resume.

---
 deluge/component.py           | 52 +++++++++++++++++++++++++++++++++--
 deluge/ui/gtkui/mainwindow.py | 16 +++++------
 2 files changed, 57 insertions(+), 11 deletions(-)

diff --git a/deluge/component.py b/deluge/component.py
index dce2f2997..720ba82d2 100644
--- a/deluge/component.py
+++ b/deluge/component.py
@@ -36,7 +36,8 @@ from deluge.log import LOG as log
 
 COMPONENT_STATE = [
     "Stopped",
-    "Started"
+    "Started",
+    "Paused"
 ]
 
 class Component:
@@ -67,7 +68,17 @@ class Component:
             gobject.source_remove(self._timer)
         except:
             pass
-        
+    
+    def _pause(self):
+        self._state = COMPONENT_STATE.index("Paused")
+        try:
+            gobject.source_remove(self._timer)
+        except:
+            pass
+    
+    def _resume(self):
+        self._start()
+            
     def shutdown(self):
         pass
     
@@ -126,7 +137,28 @@ class ComponentRegistry:
             log.debug("Stopping component %s..", component)
             self.components[component].stop()
             self.components[component]._stop()
-        
+    
+    def pause(self):
+        """Pauses all components.  Stops calling update()"""
+        for component in self.components.keys():
+            self.pause_component(component)
+    
+    def pause_component(self, component):
+        if self.components[component].get_state() not in \
+            [COMPONENT_STATE.index("Paused"), COMPONENT_STATE.index("Stopped")]:
+            log.debug("Pausing component %s..", component)
+            self.components[component]._pause()
+
+    def resume(self):
+        """Resumes all components.  Starts calling update()"""
+        for component in self.components.keys():
+            self.resume_component(component)
+    
+    def resume_component(self, component):
+        if self.components[component].get_state() == COMPONENT_STATE.index("Paused"):
+            log.debug("Resuming component %s..", component)
+            self.components[component]._resume()            
+
     def update(self):
         """Updates all components"""
         for component in self.components.keys():
@@ -170,6 +202,20 @@ def stop(component=None):
     else:
         _ComponentRegistry.stop_component(component)
 
+def pause(component=None):
+    """Pauses all or specificed components"""
+    if component == None:
+        _ComponentRegistry.pause()
+    else:
+        _ComponentRegistry.pause_component(component)
+
+def resume(component=None):
+    """Resumes all or specificed components"""
+    if component == None:
+        _ComponentRegistry.resume()
+    else:
+        _ComponentRegistry.resume_component(component)
+        
 def update():
     """Updates all components"""
     _ComponentRegistry.update()
diff --git a/deluge/ui/gtkui/mainwindow.py b/deluge/ui/gtkui/mainwindow.py
index a1e2b66d4..c92c5ff22 100644
--- a/deluge/ui/gtkui/mainwindow.py
+++ b/deluge/ui/gtkui/mainwindow.py
@@ -78,8 +78,8 @@ class MainWindow(component.Component):
 
     def show(self):
         try:
-            component.start("TorrentView")
-            component.start("StatusBar")
+            component.resume("TorrentView")
+            component.resume("StatusBar")
         except:
             pass
 
@@ -88,8 +88,8 @@ class MainWindow(component.Component):
         self.window.show()
     
     def hide(self):
-        component.stop("TorrentView")
-        component.stop("StatusBar")
+        component.pause("TorrentView")
+        component.pause("StatusBar")
         self.window.hide()
     
     def present(self):
@@ -135,14 +135,14 @@ class MainWindow(component.Component):
         if event.changed_mask & gtk.gdk.WINDOW_STATE_ICONIFIED:
             if event.new_window_state & gtk.gdk.WINDOW_STATE_ICONIFIED:
                 log.debug("MainWindow is minimized..")
-                component.stop("TorrentView")
-                component.stop("StatusBar")
+                component.pause("TorrentView")
+                component.pause("StatusBar")
                 self.is_minimized = True
             else:
                 log.debug("MainWindow is not minimized..")
                 try:
-                    component.start("TorrentView")
-                    component.start("StatusBar")
+                    component.resume("TorrentView")
+                    component.resume("StatusBar")
                 except:
                     pass
                 self.is_minimized = False