[Xfce4-commits] [apps/xfdashboard] 01/04: Implement new signal "theme-changing" at XfdashboardApplication that is emitted before a new theme is going to loaded and to be changed to.

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nomad pushed a commit to branch master
in repository apps/xfdashboard.

commit 2ff8fb6db412c5af6a8ff0ad1cda1e3d4d11a9c1
Author: Stephan Haller <nomad at froevel.de>
Date:   Thu Jun 30 08:08:16 2016 +0200

    Implement new signal "theme-changing" at XfdashboardApplication that is emitted before a new theme is going to loaded and to be changed to.
---
 libxfdashboard/application.c | 30 ++++++++++++++++++++++++++++++
 libxfdashboard/application.h |  1 +
 2 files changed, 31 insertions(+)

diff --git a/libxfdashboard/application.c b/libxfdashboard/application.c
index b661f60..738ef3b 100644
--- a/libxfdashboard/application.c
+++ b/libxfdashboard/application.c
@@ -123,9 +123,13 @@ enum
 	SIGNAL_INITIALIZED,
 	SIGNAL_QUIT,
 	SIGNAL_SHUTDOWN_FINAL,
+
 	SIGNAL_SUSPEND,
 	SIGNAL_RESUME,
+
+	SIGNAL_THEME_CHANGING,
 	SIGNAL_THEME_CHANGED,
+
 	SIGNAL_APPLICATION_LAUNCHED,
 
 	/* Actions */
@@ -287,6 +291,9 @@ static void _xfdashboard_application_set_theme_name(XfdashboardApplication *self
 		/* Notify about property change */
 		g_object_notify_by_pspec(G_OBJECT(self), XfdashboardApplicationProperties[PROP_THEME_NAME]);
 
+		/* Emit signal that theme is going to be loaded and changed */
+		g_signal_emit(self, XfdashboardApplicationSignals[SIGNAL_THEME_CHANGING], 0, priv->theme);
+
 		/* Create new theme instance and load theme */
 		theme=xfdashboard_theme_new();
 		if(!xfdashboard_theme_load(theme, priv->themeName, &error))
@@ -1228,6 +1235,29 @@ static void xfdashboard_application_class_init(XfdashboardApplicationClass *klas
 						0);
 
 	/**
+	 * XfdashboardApplication::theme-changing:
+	 * @self: The application whose theme is going to change
+	 * @inTheme: The new #XfdashboardTheme used
+	 *
+	 * The ::theme-changing signal is emitted when the theme of application
+	 * is going to be loaded and changed. When this signal is received no file
+	 * was loaded so far but will be. For example, at this moment it is possible
+	 * to load a CSS file by a plugin before the CSS files of the new theme will
+	 * be loaded to give the theme a chance to override the default CSS of plugin.
+	 */
+	XfdashboardApplicationSignals[SIGNAL_THEME_CHANGING]=
+		g_signal_new("theme-changing",
+						G_TYPE_FROM_CLASS(klass),
+						G_SIGNAL_RUN_LAST,
+						G_STRUCT_OFFSET(XfdashboardApplicationClass, theme_changing),
+						NULL,
+						NULL,
+						g_cclosure_marshal_VOID__OBJECT,
+						G_TYPE_NONE,
+						1,
+						XFDASHBOARD_TYPE_THEME);
+
+	/**
 	 * XfdashboardApplication::theme-changed:
 	 * @self: The application whose theme has changed
 	 * @inTheme: The new #XfdashboardTheme used
diff --git a/libxfdashboard/application.h b/libxfdashboard/application.h
index 367e605..140d31a 100644
--- a/libxfdashboard/application.h
+++ b/libxfdashboard/application.h
@@ -114,6 +114,7 @@ struct _XfdashboardApplicationClass
 	void (*quit)(XfdashboardApplication *self);
 	void (*shutdown_final)(XfdashboardApplication *self);
 
+	void (*theme_changing)(XfdashboardApplication *self, XfdashboardTheme *inTheme);
 	void (*theme_changed)(XfdashboardApplication *self, XfdashboardTheme *inTheme);
 
 	void (*application_launched)(XfdashboardApplication *self, GAppInfo *inAppInfo);

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