st-theme: Add "custom-stylesheets-changed" signal
StThemeNodes cache matched properties from stylesheets, so when the list of custom stylesheets changes, the node may miss better matches (when a stylesheet was added) or have pointers to invalid memory in the list (when a stylesheet was removed). In order to allow theme nodes to listen for stylesheet changes, add an appropriate signal to StTheme. https://bugzilla.gnome.org/show_bug.cgi?id=692994
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@ -87,6 +87,14 @@ enum
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PROP_DEFAULT_STYLESHEET
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};
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enum
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{
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STYLESHEETS_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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G_DEFINE_TYPE (StTheme, st_theme, G_TYPE_OBJECT)
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/* Quick strcmp. Test only for == 0 or != 0, not < 0 or > 0. */
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@ -153,6 +161,13 @@ st_theme_class_init (StThemeClass *klass)
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NULL,
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G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
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signals[STYLESHEETS_CHANGED] =
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g_signal_new ("custom-stylesheets-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0, /* no default handler slot */
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NULL, NULL, NULL,
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G_TYPE_NONE, 0);
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}
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static CRStyleSheet *
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@ -238,6 +253,7 @@ st_theme_load_stylesheet (StTheme *theme,
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insert_stylesheet (theme, path, stylesheet);
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cr_stylesheet_ref (stylesheet);
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theme->custom_stylesheets = g_slist_prepend (theme->custom_stylesheets, stylesheet);
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g_signal_emit (theme, signals[STYLESHEETS_CHANGED], 0);
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return TRUE;
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}
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@ -259,6 +275,7 @@ st_theme_unload_stylesheet (StTheme *theme,
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g_hash_table_remove (theme->stylesheets_by_filename, path);
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g_hash_table_remove (theme->filenames_by_stylesheet, stylesheet);
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cr_stylesheet_unref (stylesheet);
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g_signal_emit (theme, signals[STYLESHEETS_CHANGED], 0);
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}
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/**
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