[pitivi: 46/94] Added RippleUpdateGroup to control save button

[Thibault Saunier <tsaunier src gnome org>]

commit baba3db2d1d6d68b7fc0a94fc2980e92db82e2df
Author: Feroze Naina <ferozenaina gmail com>
Date:   Tue Aug 16 23:09:38 2011 +0530

    Added RippleUpdateGroup to control save button
    
    Conflicts:
    
    	pitivi/ui/encodingdialog.py

 pitivi/ui/encodingdialog.py |   43 ++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 38 insertions(+), 5 deletions(-)
---
diff --git a/pitivi/ui/encodingdialog.py b/pitivi/ui/encodingdialog.py
index 89b078d..cd5ba93 100644
--- a/pitivi/ui/encodingdialog.py
+++ b/pitivi/ui/encodingdialog.py
@@ -36,6 +36,7 @@ from pitivi.log.loggable import Loggable
 from pitivi.ui.encodingprogress import EncodingProgressDialog
 from pitivi.ui.gstwidget import GstElementSettingsDialog
 from pitivi.actioner import Renderer
+from pitivi.ui.ripple_update_group import RippleUpdateGroup
 from pitivi.ui.common import\
     model,\
     frame_rates,\
@@ -162,6 +163,18 @@ class EncodingDialog(Renderer, Loggable):
         self.window.connect("delete-event", self._deleteEventCb)
         self.settings.connect("settings-changed", self._settingsChanged)
 
+        # Monitor changes
+
+        self.wg = RippleUpdateGroup()
+        self.wg.addVertex(self.frame_rate_combo, signal="changed")
+        self.wg.addVertex(self.save_render_preset_button,
+                 update_func=self._updateRenderSaveButton)
+        self.wg.addVertex(self.channels_combo, signal="changed")
+        self.wg.addVertex(self.sample_rate_combo, signal="changed")
+        self.wg.addVertex(self.sample_depth_combo, signal="changed")
+        self.wg.addVertex(self.muxercombobox, signal="changed")
+        self.wg.addVertex(self.audio_encoder_combo, signal="changed")
+        self.wg.addVertex(self.video_encoder_combo, signal="changed")
         self.render_presets = RenderPresetManager()
         self.render_presets.load()
 
@@ -169,10 +182,24 @@ class EncodingDialog(Renderer, Loggable):
                 self.render_preset_treeview, self.render_presets,
                 self._updateRenderPresetButtons)
 
+        self.wg.addEdge(self.frame_rate_combo,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.audio_encoder_combo,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.video_encoder_combo,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.muxercombobox,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.channels_combo,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.sample_rate_combo,
+            self.save_render_preset_button)
+        self.wg.addEdge(self.sample_depth_combo,
+            self.save_render_preset_button)
+
         self._infobarForPresetManager = {
                 self.render_presets: self.render_preset_infobar}
 
-
         # Bind widgets to RenderPresetsManager
         self.bindCombo(self.render_presets, "channels",
             self.channels_combo)
@@ -207,7 +234,6 @@ class EncodingDialog(Renderer, Loggable):
             "width": self.getDimension("width")
         })
 
-
     def bindCombo(self, mgr, name, widget):
         if name == "container":
             mgr.bindWidget(name,
@@ -333,8 +359,6 @@ class EncodingDialog(Renderer, Loggable):
             mgr, update_buttons_func)
         treeview.connect("focus-out-event", self._treeviewDefocusedCb, mgr)
 
-
-
     def _newPresetCb(self, model, path, iter_, column, renderer, treeview):
         """Handle the addition of a preset to the model of the preset manager.
         """
@@ -379,6 +403,10 @@ class EncodingDialog(Renderer, Loggable):
         infobar = self._infobarForPresetManager[mgr]
         infobar.hide()
 
+
+    def _updateRenderSaveButton(self, unused_in, button):
+        button.set_sensitive(self.render_presets.isCurrentPresetChanged())
+
     @staticmethod
     def _getUniquePresetName(mgr):
         """Get a unique name for a new preset for the specified PresetManager.
@@ -418,6 +446,12 @@ class EncodingDialog(Renderer, Loggable):
         self.render_presets.savePreset()
         self.render_presets.save()
 
+    def _updateRenderPresetButtons(self):
+        preset_changed = self.render_presets.isCurrentPresetChanged()
+        self.save_render_preset_button.set_sensitive(preset_changed)
+        preset_selected = bool(self.render_presets.cur_preset)
+        self.remove_render_preset_button.set_sensitive(preset_selected)
+
     def _removeRenderPresetButtonClickedCb(self, button):
         selection = self.render_preset_treeview.get_selection()
         model, iter_ = selection.get_selected()
@@ -465,7 +499,6 @@ class EncodingDialog(Renderer, Loggable):
         self.render_preset_infobar = self.builder.get_object(
             "render-preset-infobar")
 
-
     def _settingsChanged(self, settings):
         self.updateResolution()