mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-09-29 10:37:39 +00:00
css: Move selector parsing code into a custom function
This commit is contained in:
Benjamin Otte
parent
d859c921c5
commit
67d0b8195d
@ -2075,283 +2075,6 @@ parse_at_keyword (GtkCssScanner *scanner)
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}
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}
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static gboolean
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parse_selector_class (GtkCssScanner *scanner, GArray *classes)
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{
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GQuark qname;
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char *name;
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name = _gtk_css_parser_try_name (scanner->parser, FALSE);
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if (name == NULL)
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{
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gtk_css_provider_error_literal (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Expected a valid name for class");
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return FALSE;
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}
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qname = g_quark_from_string (name);
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g_array_append_val (classes, qname);
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g_free (name);
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return TRUE;
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}
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static gboolean
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parse_selector_name (GtkCssScanner *scanner, GArray *names)
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{
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GQuark qname;
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char *name;
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name = _gtk_css_parser_try_name (scanner->parser, FALSE);
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if (name == NULL)
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{
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gtk_css_provider_error_literal (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Expected a valid name for id");
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return FALSE;
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}
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qname = g_quark_from_string (name);
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g_array_append_val (names, qname);
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g_free (name);
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return TRUE;
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}
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static gboolean
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parse_selector_pseudo_class (GtkCssScanner *scanner,
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GtkRegionFlags *region_to_modify,
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GtkStateFlags *state_to_modify)
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{
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struct {
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const char *name;
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GtkRegionFlags region_flag;
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GtkStateFlags state_flag;
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} pseudo_classes[] = {
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{ "first-child", GTK_REGION_FIRST, 0 },
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{ "last-child", GTK_REGION_LAST, 0 },
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{ "only-child", GTK_REGION_ONLY, 0 },
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{ "sorted", GTK_REGION_SORTED, 0 },
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{ "active", 0, GTK_STATE_FLAG_ACTIVE },
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{ "prelight", 0, GTK_STATE_FLAG_PRELIGHT },
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{ "hover", 0, GTK_STATE_FLAG_PRELIGHT },
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{ "selected", 0, GTK_STATE_FLAG_SELECTED },
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{ "insensitive", 0, GTK_STATE_FLAG_INSENSITIVE },
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{ "inconsistent", 0, GTK_STATE_FLAG_INCONSISTENT },
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{ "focused", 0, GTK_STATE_FLAG_FOCUSED },
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{ "focus", 0, GTK_STATE_FLAG_FOCUSED },
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{ "backdrop", 0, GTK_STATE_FLAG_BACKDROP },
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{ NULL, }
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}, nth_child_classes[] = {
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{ "first", GTK_REGION_FIRST, 0 },
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{ "last", GTK_REGION_LAST, 0 },
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{ "even", GTK_REGION_EVEN, 0 },
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{ "odd", GTK_REGION_ODD, 0 },
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{ NULL, }
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}, *classes;
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guint i;
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char *name;
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name = _gtk_css_parser_try_ident (scanner->parser, FALSE);
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if (name == NULL)
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{
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gtk_css_provider_error_literal (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Missing name of pseudo-class");
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return FALSE;
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}
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if (_gtk_css_parser_try (scanner->parser, "(", TRUE))
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{
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char *function = name;
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name = _gtk_css_parser_try_ident (scanner->parser, TRUE);
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if (!_gtk_css_parser_try (scanner->parser, ")", FALSE))
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{
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gtk_css_provider_error_literal (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Missing closing bracket for pseudo-class");
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return FALSE;
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}
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if (g_ascii_strcasecmp (function, "nth-child") != 0)
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{
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class '%s(%s)'", function, name ? name : "");
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g_free (function);
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g_free (name);
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return FALSE;
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}
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g_free (function);
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if (name == NULL)
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{
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"nth-child() requires an argument");
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return FALSE;
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}
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classes = nth_child_classes;
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}
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else
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classes = pseudo_classes;
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for (i = 0; classes[i].name != NULL; i++)
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{
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if (g_ascii_strcasecmp (name, classes[i].name) == 0)
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{
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if ((*region_to_modify & classes[i].region_flag) ||
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(*state_to_modify & classes[i].state_flag))
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{
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if (classes == nth_child_classes)
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Duplicate pseudo-class 'nth-child(%s)'", name);
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else
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Duplicate pseudo-class '%s'", name);
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}
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*region_to_modify |= classes[i].region_flag;
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*state_to_modify |= classes[i].state_flag;
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g_free (name);
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return TRUE;
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}
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}
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if (classes == nth_child_classes)
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class 'nth-child(%s)'", name);
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else
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gtk_css_provider_error (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class '%s'", name);
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g_free (name);
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return FALSE;
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}
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static gboolean
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parse_simple_selector (GtkCssScanner *scanner,
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char **name,
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GArray *ids,
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GArray *classes,
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GtkRegionFlags *pseudo_classes,
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GtkStateFlags *state)
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{
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gboolean parsed_something;
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*name = _gtk_css_parser_try_ident (scanner->parser, FALSE);
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if (*name)
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parsed_something = TRUE;
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else
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parsed_something = _gtk_css_parser_try (scanner->parser, "*", FALSE);
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do {
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if (_gtk_css_parser_try (scanner->parser, "#", FALSE))
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{
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if (!parse_selector_name (scanner, ids))
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return FALSE;
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}
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else if (_gtk_css_parser_try (scanner->parser, ".", FALSE))
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{
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if (!parse_selector_class (scanner, classes))
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return FALSE;
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}
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else if (_gtk_css_parser_try (scanner->parser, ":", FALSE))
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{
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if (!parse_selector_pseudo_class (scanner, pseudo_classes, state))
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return FALSE;
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}
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else if (!parsed_something)
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{
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gtk_css_provider_error_literal (scanner->provider,
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scanner,
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GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_SYNTAX,
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"Expected a valid selector");
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return FALSE;
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}
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else
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break;
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parsed_something = TRUE;
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}
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while (!_gtk_css_parser_is_eof (scanner->parser));
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_gtk_css_parser_skip_whitespace (scanner->parser);
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return TRUE;
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}
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static GtkCssSelector *
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parse_selector (GtkCssScanner *scanner)
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{
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GtkCssSelector *selector = NULL;
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do {
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char *name = NULL;
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GArray *ids = g_array_new (TRUE, FALSE, sizeof (GQuark));
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GArray *classes = g_array_new (TRUE, FALSE, sizeof (GQuark));
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GtkRegionFlags pseudo_classes = 0;
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GtkStateFlags state = 0;
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GtkCssCombinator combine = GTK_CSS_COMBINE_DESCANDANT;
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if (selector)
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{
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if (_gtk_css_parser_try (scanner->parser, ">", TRUE))
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combine = GTK_CSS_COMBINE_CHILD;
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}
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if (!parse_simple_selector (scanner, &name, ids, classes, &pseudo_classes, &state))
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{
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g_array_free (ids, TRUE);
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g_array_free (classes, TRUE);
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if (selector)
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_gtk_css_selector_free (selector);
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return NULL;
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}
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selector = _gtk_css_selector_new (selector,
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combine,
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name,
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(GQuark *) g_array_free (ids, ids->len == 0),
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(GQuark *) g_array_free (classes, classes->len == 0),
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pseudo_classes,
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state);
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g_free (name);
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}
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while (!_gtk_css_parser_is_eof (scanner->parser) &&
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!_gtk_css_parser_begins_with (scanner->parser, ',') &&
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!_gtk_css_parser_begins_with (scanner->parser, '{'));
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return selector;
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}
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static GSList *
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parse_selector_list (GtkCssScanner *scanner)
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{
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@ -2360,7 +2083,7 @@ parse_selector_list (GtkCssScanner *scanner)
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gtk_css_scanner_push_section (scanner, GTK_CSS_SECTION_SELECTOR);
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do {
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GtkCssSelector *select = parse_selector (scanner);
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GtkCssSelector *select = _gtk_css_selector_parse (scanner->parser);
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if (select == NULL)
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{
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@ -19,8 +19,14 @@
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#include "gtkcssselectorprivate.h"
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#include "gtkcssprovider.h"
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#include "gtkstylecontextprivate.h"
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typedef enum {
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GTK_CSS_COMBINE_DESCANDANT,
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GTK_CSS_COMBINE_CHILD
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} GtkCssCombinator;
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struct _GtkCssSelector
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{
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GtkCssSelector * previous; /* link to next element in selector or NULL if last */
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@ -33,8 +39,8 @@ struct _GtkCssSelector
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GtkStateFlags state; /* required state flags (currently not checked when matching) */
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};
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GtkCssSelector *
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_gtk_css_selector_new (GtkCssSelector *previous,
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static GtkCssSelector *
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gtk_css_selector_new (GtkCssSelector *previous,
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GtkCssCombinator combine,
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const char * name,
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GQuark * ids,
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@ -57,6 +63,253 @@ _gtk_css_selector_new (GtkCssSelector *previous,
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return selector;
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}
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static gboolean
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parse_selector_class (GtkCssParser *parser, GArray *classes)
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{
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GQuark qname;
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char *name;
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name = _gtk_css_parser_try_name (parser, FALSE);
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if (name == NULL)
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{
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_gtk_css_parser_error (parser, "Expected a valid name for class");
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return FALSE;
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}
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qname = g_quark_from_string (name);
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g_array_append_val (classes, qname);
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g_free (name);
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return TRUE;
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}
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static gboolean
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parse_selector_name (GtkCssParser *parser, GArray *names)
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{
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GQuark qname;
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char *name;
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name = _gtk_css_parser_try_name (parser, FALSE);
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if (name == NULL)
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{
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_gtk_css_parser_error (parser, "Expected a valid name for id");
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return FALSE;
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}
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qname = g_quark_from_string (name);
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g_array_append_val (names, qname);
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g_free (name);
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return TRUE;
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}
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static gboolean
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parse_selector_pseudo_class (GtkCssParser *parser,
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GtkRegionFlags *region_to_modify,
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GtkStateFlags *state_to_modify)
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{
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struct {
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const char *name;
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GtkRegionFlags region_flag;
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GtkStateFlags state_flag;
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} pseudo_classes[] = {
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{ "first-child", GTK_REGION_FIRST, 0 },
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{ "last-child", GTK_REGION_LAST, 0 },
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{ "only-child", GTK_REGION_ONLY, 0 },
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{ "sorted", GTK_REGION_SORTED, 0 },
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{ "active", 0, GTK_STATE_FLAG_ACTIVE },
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{ "prelight", 0, GTK_STATE_FLAG_PRELIGHT },
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{ "hover", 0, GTK_STATE_FLAG_PRELIGHT },
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{ "selected", 0, GTK_STATE_FLAG_SELECTED },
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{ "insensitive", 0, GTK_STATE_FLAG_INSENSITIVE },
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{ "inconsistent", 0, GTK_STATE_FLAG_INCONSISTENT },
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{ "focused", 0, GTK_STATE_FLAG_FOCUSED },
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{ "focus", 0, GTK_STATE_FLAG_FOCUSED },
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{ "backdrop", 0, GTK_STATE_FLAG_BACKDROP },
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{ NULL, }
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}, nth_child_classes[] = {
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{ "first", GTK_REGION_FIRST, 0 },
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{ "last", GTK_REGION_LAST, 0 },
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{ "even", GTK_REGION_EVEN, 0 },
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{ "odd", GTK_REGION_ODD, 0 },
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{ NULL, }
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}, *classes;
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guint i;
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char *name;
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GError *error;
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name = _gtk_css_parser_try_ident (parser, FALSE);
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if (name == NULL)
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{
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_gtk_css_parser_error (parser, "Missing name of pseudo-class");
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return FALSE;
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}
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if (_gtk_css_parser_try (parser, "(", TRUE))
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{
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char *function = name;
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name = _gtk_css_parser_try_ident (parser, TRUE);
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if (!_gtk_css_parser_try (parser, ")", FALSE))
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{
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_gtk_css_parser_error (parser, "Missing closing bracket for pseudo-class");
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return FALSE;
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}
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if (g_ascii_strcasecmp (function, "nth-child") != 0)
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{
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error = g_error_new (GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class '%s(%s)'", function, name ? name : "");
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_gtk_css_parser_take_error (parser, error);
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g_free (function);
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g_free (name);
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return FALSE;
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}
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g_free (function);
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if (name == NULL)
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{
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error = g_error_new (GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class 'nth-child(%s)'", name);
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_gtk_css_parser_take_error (parser, error);
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return FALSE;
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}
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classes = nth_child_classes;
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}
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else
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classes = pseudo_classes;
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for (i = 0; classes[i].name != NULL; i++)
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{
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if (g_ascii_strcasecmp (name, classes[i].name) == 0)
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{
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if ((*region_to_modify & classes[i].region_flag) ||
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(*state_to_modify & classes[i].state_flag))
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{
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if (classes == nth_child_classes)
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_gtk_css_parser_error (parser, "Duplicate pseudo-class 'nth-child(%s)'", name);
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else
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_gtk_css_parser_error (parser, "Duplicate pseudo-class '%s'", name);
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}
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*region_to_modify |= classes[i].region_flag;
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*state_to_modify |= classes[i].state_flag;
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g_free (name);
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return TRUE;
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}
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}
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if (classes == nth_child_classes)
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error = g_error_new (GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class 'nth-child(%s)'", name);
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else
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error = g_error_new (GTK_CSS_PROVIDER_ERROR,
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GTK_CSS_PROVIDER_ERROR_UNKNOWN_VALUE,
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"Unknown pseudo-class '%s'", name);
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g_free (name);
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_gtk_css_parser_take_error (parser, error);
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return FALSE;
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}
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static gboolean
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parse_simple_selector (GtkCssParser *parser,
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char **name,
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GArray *ids,
|
||||
GArray *classes,
|
||||
GtkRegionFlags *pseudo_classes,
|
||||
GtkStateFlags *state)
|
||||
{
|
||||
gboolean parsed_something;
|
||||
|
||||
*name = _gtk_css_parser_try_ident (parser, FALSE);
|
||||
if (*name)
|
||||
parsed_something = TRUE;
|
||||
else
|
||||
parsed_something = _gtk_css_parser_try (parser, "*", FALSE);
|
||||
|
||||
do {
|
||||
if (_gtk_css_parser_try (parser, "#", FALSE))
|
||||
{
|
||||
if (!parse_selector_name (parser, ids))
|
||||
return FALSE;
|
||||
}
|
||||
else if (_gtk_css_parser_try (parser, ".", FALSE))
|
||||
{
|
||||
if (!parse_selector_class (parser, classes))
|
||||
return FALSE;
|
||||
}
|
||||
else if (_gtk_css_parser_try (parser, ":", FALSE))
|
||||
{
|
||||
if (!parse_selector_pseudo_class (parser, pseudo_classes, state))
|
||||
return FALSE;
|
||||
}
|
||||
else if (!parsed_something)
|
||||
{
|
||||
_gtk_css_parser_error (parser, "Expected a valid selector");
|
||||
return FALSE;
|
||||
}
|
||||
else
|
||||
break;
|
||||
|
||||
parsed_something = TRUE;
|
||||
}
|
||||
while (!_gtk_css_parser_is_eof (parser));
|
||||
|
||||
_gtk_css_parser_skip_whitespace (parser);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GtkCssSelector *
|
||||
_gtk_css_selector_parse (GtkCssParser *parser)
|
||||
{
|
||||
GtkCssSelector *selector = NULL;
|
||||
|
||||
do {
|
||||
char *name = NULL;
|
||||
GArray *ids = g_array_new (TRUE, FALSE, sizeof (GQuark));
|
||||
GArray *classes = g_array_new (TRUE, FALSE, sizeof (GQuark));
|
||||
GtkRegionFlags pseudo_classes = 0;
|
||||
GtkStateFlags state = 0;
|
||||
GtkCssCombinator combine = GTK_CSS_COMBINE_DESCANDANT;
|
||||
|
||||
if (selector)
|
||||
{
|
||||
if (_gtk_css_parser_try (parser, ">", TRUE))
|
||||
combine = GTK_CSS_COMBINE_CHILD;
|
||||
}
|
||||
|
||||
if (!parse_simple_selector (parser, &name, ids, classes, &pseudo_classes, &state))
|
||||
{
|
||||
g_array_free (ids, TRUE);
|
||||
g_array_free (classes, TRUE);
|
||||
if (selector)
|
||||
_gtk_css_selector_free (selector);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
selector = gtk_css_selector_new (selector,
|
||||
combine,
|
||||
name,
|
||||
(GQuark *) g_array_free (ids, ids->len == 0),
|
||||
(GQuark *) g_array_free (classes, classes->len == 0),
|
||||
pseudo_classes,
|
||||
state);
|
||||
g_free (name);
|
||||
}
|
||||
while (!_gtk_css_parser_is_eof (parser) &&
|
||||
!_gtk_css_parser_begins_with (parser, ',') &&
|
||||
!_gtk_css_parser_begins_with (parser, '{'));
|
||||
|
||||
return selector;
|
||||
}
|
||||
|
||||
void
|
||||
_gtk_css_selector_free (GtkCssSelector *selector)
|
||||
{
|
||||
|
||||
@ -20,23 +20,13 @@
|
||||
|
||||
#include <gtk/gtkenums.h>
|
||||
#include <gtk/gtkwidgetpath.h>
|
||||
#include "gtk/gtkcssparserprivate.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
typedef enum {
|
||||
GTK_CSS_COMBINE_DESCANDANT,
|
||||
GTK_CSS_COMBINE_CHILD
|
||||
} GtkCssCombinator;
|
||||
|
||||
typedef struct _GtkCssSelector GtkCssSelector;
|
||||
|
||||
GtkCssSelector * _gtk_css_selector_new (GtkCssSelector *previous,
|
||||
GtkCssCombinator combine,
|
||||
const char * name,
|
||||
GQuark * ids,
|
||||
GQuark * classes,
|
||||
GtkRegionFlags pseudo_classes,
|
||||
GtkStateFlags state);
|
||||
GtkCssSelector * _gtk_css_selector_parse (GtkCssParser *parser);
|
||||
void _gtk_css_selector_free (GtkCssSelector *selector);
|
||||
|
||||
char * _gtk_css_selector_to_string (const GtkCssSelector *selector);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user