[gnome-tweak-tool] Add desktop background options (bug 689299)

[John Stowers <jstowers src gnome org>]

commit bbf942743286edc4e8b15736ec67e2d96f81196b
Author: John Stowers <john stowers gmail com>
Date:   Sun Dec 2 19:21:53 2012 +0100

    Add desktop background options (bug 689299)

 gtweak/tweaks/tweak_nautilus.py         |    4 +++-
 gtweak/tweaks/tweak_shell.py            |    4 ++--
 gtweak/tweaks/tweak_shell_extensions.py |    4 ++--
 gtweak/widgets.py                       |   29 +++++++++++++++++++++++++++--
 4 files changed, 34 insertions(+), 7 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_nautilus.py b/gtweak/tweaks/tweak_nautilus.py
index e2f8bed..86ff692 100644
--- a/gtweak/tweaks/tweak_nautilus.py
+++ b/gtweak/tweaks/tweak_nautilus.py
@@ -20,7 +20,7 @@ from gi.repository import Gtk
 import gtweak
 from gtweak.utils import AutostartManager
 from gtweak.tweakmodel import TWEAK_GROUP_DESKTOP, TWEAK_GROUP_FILES
-from gtweak.widgets import GSettingsSwitchTweak
+from gtweak.widgets import GSettingsSwitchTweak, GSettingsComboEnumTweak, GSettingsFileChooserButtonTweak
 
 class DesktopIconTweak(GSettingsSwitchTweak):
     def __init__(self, **options):
@@ -52,4 +52,6 @@ TWEAKS = (
     GSettingsSwitchTweak("org.gnome.nautilus.desktop", "volumes-visible", schema_filename="org.gnome.nautilus.gschema.xml",group_name=TWEAK_GROUP_DESKTOP),
     GSettingsSwitchTweak("org.gnome.nautilus.preferences", "always-use-location-entry",
 schema_filename="org.gnome.nautilus.gschema.xml",group_name=TWEAK_GROUP_FILES),
+    GSettingsComboEnumTweak("org.gnome.desktop.background", "picture-options", group_name=TWEAK_GROUP_DESKTOP),
+    GSettingsFileChooserButtonTweak("org.gnome.desktop.background", "picture-uri", local_only=True, mimetypes=["application/xml","image/png","image/jpeg"], group_name=TWEAK_GROUP_DESKTOP),
 )
diff --git a/gtweak/tweaks/tweak_shell.py b/gtweak/tweaks/tweak_shell.py
index 4696669..e4e25a1 100644
--- a/gtweak/tweaks/tweak_shell.py
+++ b/gtweak/tweaks/tweak_shell.py
@@ -28,7 +28,7 @@ from gtweak.utils import walk_directories, extract_zip_file, make_combo_list_wit
 from gtweak.gsettings import GSettingsSetting, GSettingsMissingError, GSettingsFakeSetting
 from gtweak.gshellwrapper import GnomeShellFactory
 from gtweak.tweakmodel import Tweak, TweakGroup, TWEAK_GROUP_THEME, TWEAK_GROUP_SHELL, TWEAK_SORT_LAST
-from gtweak.widgets import FileChooserButtonTweak, GSettingsComboTweak, GSettingsComboEnumTweak, GSettingsSwitchTweak, build_label_beside_widget, build_horizontal_sizegroup, build_combo_box_text, UI_BOX_SPACING
+from gtweak.widgets import FileChooserButton, GSettingsComboTweak, GSettingsComboEnumTweak, GSettingsSwitchTweak, build_label_beside_widget, build_horizontal_sizegroup, build_combo_box_text, UI_BOX_SPACING
 
 class ShowWindowButtons(GSettingsComboTweak):
     def __init__(self, **options):
@@ -125,7 +125,7 @@ class ShellThemeTweak(Tweak):
             self._combo = cb
 
             #a filechooser to install new themes
-            chooser = FileChooserButtonTweak(
+            chooser = FileChooserButton(
                         _("Select a theme"),
                         True,
                         "application/zip")
diff --git a/gtweak/tweaks/tweak_shell_extensions.py b/gtweak/tweaks/tweak_shell_extensions.py
index 71c7101..3d07ce7 100644
--- a/gtweak/tweaks/tweak_shell_extensions.py
+++ b/gtweak/tweaks/tweak_shell_extensions.py
@@ -10,7 +10,7 @@ from gi.repository import GLib
 from gtweak.utils import extract_zip_file, execute_subprocess
 from gtweak.gshellwrapper import GnomeShell, GnomeShellFactory
 from gtweak.tweakmodel import Tweak, TweakGroup
-from gtweak.widgets import FileChooserButtonTweak, build_label_beside_widget, build_horizontal_sizegroup, build_tight_button, UI_BOX_SPACING
+from gtweak.widgets import FileChooserButton, build_label_beside_widget, build_horizontal_sizegroup, build_tight_button, UI_BOX_SPACING
 
 def N_(x): return x
 
@@ -83,7 +83,7 @@ class _ShellExtensionInstallerTweak(Tweak):
 
         self._shell = shell
 
-        chooser = FileChooserButtonTweak(
+        chooser = FileChooserButton(
                         _("Select an extension"),
                         True,
                         "application/zip")
diff --git a/gtweak/widgets.py b/gtweak/widgets.py
index 6db3461..4d04b61 100644
--- a/gtweak/widgets.py
+++ b/gtweak/widgets.py
@@ -302,8 +302,8 @@ class GConfFontButtonTweak(_GConfTweak):
     def _on_fontbutton_changed(self, btn, param):
         self.gconf.set_value(btn.props.font_name)
 
-class FileChooserButtonTweak(Gtk.FileChooserButton):
-    def __init__(self, title, local_only, mimetypes=()):
+class FileChooserButton(Gtk.FileChooserButton):
+    def __init__(self, title, local_only, mimetypes):
         Gtk.FileChooserButton.__init__(self, title=title)
 
         if mimetypes:
@@ -314,6 +314,31 @@ class FileChooserButtonTweak(Gtk.FileChooserButton):
 
         #self.set_width_chars(15)
         self.set_local_only(local_only)
+        self.set_action(Gtk.FileChooserAction.OPEN)
+
+class GSettingsFileChooserButtonTweak(_GSettingsTweak):
+    def __init__(self, schema_name, key_name, local_only, mimetypes, **options):
+        _GSettingsTweak.__init__(self, schema_name, key_name, **options)
+
+        self.settings.connect('changed::'+self.key_name, self._on_setting_changed)
+
+        self.filechooser = FileChooserButton(self.name,local_only,mimetypes)
+        self.filechooser.set_uri(self.settings.get_string(self.key_name))
+        self.filechooser.connect("file-set", self._on_file_set)
+
+        self.widget = build_label_beside_widget(self.name, self.filechooser)
+        self.widget_for_size_group = self.filechooser
+
+    def _values_are_different(self):
+        return self.settings.get_string(self.key_name) != self.filechooser.get_uri()
+
+    def _on_setting_changed(self, setting, key):
+        self.filechooser.set_uri(self.settings.get_string(key))
+
+    def _on_file_set(self, chooser):
+        uri = self.filechooser.get_uri()
+        if uri and self._values_are_different():
+            self.settings.set_string(self.key_name, uri)
 
 class DarkThemeSwitcher(Tweak):
     def __init__(self, **options):