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https://gitlab.gnome.org/GNOME/gtk.git
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selector: Add GtkSelectorCategory
This will make it easier to write more complex matching algorithms.
This commit is contained in:
Benjamin Otte
parent
f42e18507f
commit
2a5a52dd4b
@ -30,6 +30,23 @@
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# include <intrin.h>
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#endif
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/*
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* @GTK_CSS_SELECTOR_CATEGORY_SIMPLE: A simple selector
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* @GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL: A simple selector that matches
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* what change tracking considers a "radical change"
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* @GTK_CSS_SELECTOR_SIBLING: A selector matching siblings
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* @GTK_CSS_SELECTOR_CATEGORY_PARENT: A selector matching a parent or other
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* ancestor
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*
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* Categorize the selectors. This helps in various loops when matching.
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*/
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typedef enum {
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GTK_CSS_SELECTOR_CATEGORY_SIMPLE,
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GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL,
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GTK_CSS_SELECTOR_CATEGORY_PARENT,
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GTK_CSS_SELECTOR_CATEGORY_SIBLING,
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} GtkCssSelectorCategory;
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typedef struct _GtkCssSelectorClass GtkCssSelectorClass;
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typedef gboolean (* GtkCssSelectorForeachFunc) (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher,
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@ -37,6 +54,7 @@ typedef gboolean (* GtkCssSelectorForeachFunc) (const GtkCssSelector *selector,
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struct _GtkCssSelectorClass {
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const char *name;
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GtkCssSelectorCategory category;
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void (* print) (const GtkCssSelector *selector,
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GString *string);
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@ -61,9 +79,6 @@ struct _GtkCssSelectorClass {
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guint (* hash_one) (const GtkCssSelector *selector);
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int (* compare_one) (const GtkCssSelector *a,
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const GtkCssSelector *b);
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guint is_simple : 1;
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guint ignore_for_change : 1;
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};
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typedef enum {
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@ -308,6 +323,7 @@ gtk_css_selector_descendant_get_change (const GtkCssSelector *selector, GtkCssCh
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_DESCENDANT = {
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"descendant",
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GTK_CSS_SELECTOR_CATEGORY_PARENT,
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gtk_css_selector_descendant_print,
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gtk_css_selector_descendant_foreach_matcher,
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gtk_css_selector_default_match_one,
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@ -315,8 +331,6 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_DESCENDANT = {
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE,
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TRUE
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};
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/* CHILD */
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@ -350,6 +364,7 @@ gtk_css_selector_child_get_change (const GtkCssSelector *selector, GtkCssChange
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_CHILD = {
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"child",
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GTK_CSS_SELECTOR_CATEGORY_PARENT,
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gtk_css_selector_child_print,
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gtk_css_selector_child_foreach_matcher,
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gtk_css_selector_default_match_one,
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@ -357,8 +372,6 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_CHILD = {
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE,
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TRUE
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};
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/* SIBLING */
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@ -397,6 +410,7 @@ gtk_css_selector_sibling_get_change (const GtkCssSelector *selector, GtkCssChang
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_SIBLING = {
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"sibling",
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GTK_CSS_SELECTOR_CATEGORY_SIBLING,
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gtk_css_selector_sibling_print,
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gtk_css_selector_sibling_foreach_matcher,
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gtk_css_selector_default_match_one,
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@ -404,8 +418,6 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_SIBLING = {
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE,
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TRUE
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};
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/* ADJACENT */
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@ -439,6 +451,7 @@ gtk_css_selector_adjacent_get_change (const GtkCssSelector *selector, GtkCssChan
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_ADJACENT = {
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"adjacent",
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GTK_CSS_SELECTOR_CATEGORY_SIBLING,
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gtk_css_selector_adjacent_print,
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gtk_css_selector_adjacent_foreach_matcher,
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gtk_css_selector_default_match_one,
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@ -446,8 +459,6 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_ADJACENT = {
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gtk_css_selector_default_add_specificity,
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gtk_css_selector_default_hash_one,
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gtk_css_selector_default_compare_one,
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FALSE,
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TRUE
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};
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/* SIMPLE SELECTOR DEFINE */
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@ -513,6 +524,7 @@ gtk_css_selector_ ## n ## _add_specificity (const GtkCssSelector *selector, \
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\
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_ ## c = { \
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G_STRINGIFY(n), \
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ignore_for_change ? GTK_CSS_SELECTOR_CATEGORY_SIMPLE : GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL, \
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gtk_css_selector_ ## n ## _print, \
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gtk_css_selector_default_foreach_matcher, \
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match_func, \
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@ -520,12 +532,11 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_ ## c = { \
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gtk_css_selector_ ## n ## _add_specificity, \
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hash_func, \
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comp_func, \
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TRUE, \
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ignore_for_change \
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};\
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\
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static const GtkCssSelectorClass GTK_CSS_SELECTOR_NOT_ ## c = { \
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"not_" G_STRINGIFY(n), \
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ignore_for_change ? GTK_CSS_SELECTOR_CATEGORY_SIMPLE : GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL, \
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gtk_css_selector_not_ ## n ## _print, \
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gtk_css_selector_default_foreach_matcher, \
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gtk_css_selector_not_ ## n ## _match_one, \
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@ -533,8 +544,6 @@ static const GtkCssSelectorClass GTK_CSS_SELECTOR_NOT_ ## c = { \
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gtk_css_selector_ ## n ## _add_specificity, \
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hash_func, \
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comp_func, \
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TRUE, \
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ignore_for_change \
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};
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/* ANY */
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@ -1755,6 +1764,23 @@ _gtk_css_selector_get_change (const GtkCssSelector *selector)
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/******************** SelectorTree handling *****************/
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static gboolean
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gtk_css_selector_is_simple (const GtkCssSelector *selector)
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{
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switch (selector->class->category)
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{
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case GTK_CSS_SELECTOR_CATEGORY_SIMPLE:
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case GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL:
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return TRUE;
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case GTK_CSS_SELECTOR_CATEGORY_PARENT:
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case GTK_CSS_SELECTOR_CATEGORY_SIBLING:
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return FALSE;
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default:
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g_assert_not_reached ();
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return FALSE;
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}
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}
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static GHashTable *
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gtk_css_selectors_count_initial_init (void)
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{
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@ -1764,7 +1790,7 @@ gtk_css_selectors_count_initial_init (void)
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static void
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gtk_css_selectors_count_initial (const GtkCssSelector *selector, GHashTable *hash_one)
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{
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if (!selector->class->is_simple)
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if (!gtk_css_selector_is_simple (selector))
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{
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guint count = GPOINTER_TO_INT (g_hash_table_lookup (hash_one, selector));
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g_hash_table_replace (hash_one, (gpointer)selector, GUINT_TO_POINTER (count + 1));
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@ -1772,7 +1798,7 @@ gtk_css_selectors_count_initial (const GtkCssSelector *selector, GHashTable *has
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}
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for (;
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selector && selector->class->is_simple;
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selector && gtk_css_selector_is_simple (selector);
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selector = gtk_css_selector_previous (selector))
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{
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guint count = GPOINTER_TO_INT (g_hash_table_lookup (hash_one, selector));
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@ -1783,11 +1809,11 @@ gtk_css_selectors_count_initial (const GtkCssSelector *selector, GHashTable *has
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static gboolean
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gtk_css_selectors_has_initial_selector (const GtkCssSelector *selector, const GtkCssSelector *initial)
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{
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if (!selector->class->is_simple)
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if (!gtk_css_selector_is_simple (selector))
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return gtk_css_selector_equal (selector, initial);
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for (;
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selector && selector->class->is_simple;
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selector && gtk_css_selector_is_simple (selector);
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selector = gtk_css_selector_previous (selector))
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{
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if (gtk_css_selector_equal (selector, initial))
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@ -1807,13 +1833,13 @@ gtk_css_selectors_skip_initial_selector (GtkCssSelector *selector, const GtkCssS
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without losing any other selectors */
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if (!gtk_css_selector_equal (selector, initial))
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{
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for (found = selector; found && found->class->is_simple; found = (GtkCssSelector *)gtk_css_selector_previous (found))
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for (found = selector; found && gtk_css_selector_is_simple (found); found = (GtkCssSelector *)gtk_css_selector_previous (found))
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{
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if (gtk_css_selector_equal (found, initial))
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break;
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}
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g_assert (found != NULL && found->class->is_simple);
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g_assert (found != NULL && gtk_css_selector_is_simple (found));
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tmp = *found;
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*found = *selector;
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@ -1866,7 +1892,7 @@ static gboolean
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gtk_css_selector_match_for_change (const GtkCssSelector *selector,
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const GtkCssMatcher *matcher)
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{
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if (selector->class->ignore_for_change)
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if (selector->class->category != GTK_CSS_SELECTOR_CATEGORY_SIMPLE_RADICAL)
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return TRUE;
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return selector->class->match_one (selector, matcher);
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@ -1909,7 +1935,7 @@ gtk_css_selector_tree_get_change (const GtkCssSelectorTree *tree,
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if (!gtk_css_selector_match_for_change (&tree->selector, matcher))
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return 0;
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if (!tree->selector.class->is_simple)
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if (!gtk_css_selector_is_simple (&tree->selector))
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return gtk_css_selector_tree_collect_change (tree) | GTK_CSS_CHANGE_GOT_MATCH;
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for (prev = gtk_css_selector_tree_get_previous (tree);
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@ -2018,7 +2044,7 @@ _gtk_css_selector_tree_match_print (const GtkCssSelectorTree *tree,
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/* print name and * selector before others */
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for (iter = tree;
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iter && iter->selector.class->is_simple;
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iter && gtk_css_selector_is_simple (&iter->selector);
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iter = gtk_css_selector_tree_get_parent (iter))
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{
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if (iter->selector.class == >K_CSS_SELECTOR_NAME ||
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@ -2029,7 +2055,7 @@ _gtk_css_selector_tree_match_print (const GtkCssSelectorTree *tree,
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}
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/* now print other simple selectors */
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for (iter = tree;
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iter && iter->selector.class->is_simple;
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iter && gtk_css_selector_is_simple (&iter->selector);
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iter = gtk_css_selector_tree_get_parent (iter))
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{
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if (iter->selector.class != >K_CSS_SELECTOR_NAME &&
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