select.h

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/*
 * This file is part of LibCSS
 * Licensed under the MIT License,
 *                http://www.opensource.org/licenses/mit-license.php
 * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
 */
 
#ifndef libcss_select_h_
#define libcss_select_h_
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#include <libcss/errors.h>
#include <libcss/functypes.h>
#include <libcss/hint.h>
#include <libcss/types.h>
#include <libcss/computed.h>
#include <libcss/unit.h>
 
typedef enum css_pseudo_element {
        CSS_PSEUDO_ELEMENT_NONE         = 0,
        CSS_PSEUDO_ELEMENT_FIRST_LINE   = 1,
        CSS_PSEUDO_ELEMENT_FIRST_LETTER = 2,
        CSS_PSEUDO_ELEMENT_BEFORE       = 3,
        CSS_PSEUDO_ELEMENT_AFTER        = 4,
 
        CSS_PSEUDO_ELEMENT_COUNT        = 5     
} css_pseudo_element;
 
typedef struct css_select_results {
        css_computed_style *styles[CSS_PSEUDO_ELEMENT_COUNT];
} css_select_results;
 
typedef enum css_select_handler_version {
        CSS_SELECT_HANDLER_VERSION_1 = 1
} css_select_handler_version;
 
typedef struct css_select_handler {
        uint32_t handler_version;
 
        css_error (*node_name)(void *pw, void *node,
                        css_qname *qname);
        css_error (*node_classes)(void *pw, void *node,
                        lwc_string ***classes,
                        uint32_t *n_classes);
        css_error (*node_id)(void *pw, void *node,
                        lwc_string **id);
 
        css_error (*named_ancestor_node)(void *pw, void *node,
                        const css_qname *qname, void **ancestor);
        css_error (*named_parent_node)(void *pw, void *node,
                        const css_qname *qname, void **parent);
        css_error (*named_sibling_node)(void *pw, void *node,
                        const css_qname *qname, void **sibling);
        css_error (*named_generic_sibling_node)(void *pw, void *node,
                        const css_qname *qname, void **sibling);
 
        css_error (*parent_node)(void *pw, void *node, void **parent);
        css_error (*sibling_node)(void *pw, void *node, void **sibling);
 
        css_error (*node_has_name)(void *pw, void *node,
                        const css_qname *qname, bool *match);
        css_error (*node_has_class)(void *pw, void *node,
                        lwc_string *name, bool *match);
        css_error (*node_has_id)(void *pw, void *node,
                        lwc_string *name, bool *match);
        css_error (*node_has_attribute)(void *pw, void *node,
                        const css_qname *qname, bool *match);
        css_error (*node_has_attribute_equal)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
        css_error (*node_has_attribute_dashmatch)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
        css_error (*node_has_attribute_includes)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
        css_error (*node_has_attribute_prefix)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
        css_error (*node_has_attribute_suffix)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
        css_error (*node_has_attribute_substring)(void *pw, void *node,
                        const css_qname *qname, lwc_string *value,
                        bool *match);
 
        css_error (*node_is_root)(void *pw, void *node, bool *match);
        css_error (*node_count_siblings)(void *pw, void *node,
                        bool same_name, bool after, int32_t *count);
        css_error (*node_is_empty)(void *pw, void *node, bool *match);
 
        css_error (*node_is_link)(void *pw, void *node, bool *match);
        css_error (*node_is_visited)(void *pw, void *node, bool *match);
        css_error (*node_is_hover)(void *pw, void *node, bool *match);
        css_error (*node_is_active)(void *pw, void *node, bool *match);
        css_error (*node_is_focus)(void *pw, void *node, bool *match);
 
        css_error (*node_is_enabled)(void *pw, void *node, bool *match);
        css_error (*node_is_disabled)(void *pw, void *node, bool *match);
        css_error (*node_is_checked)(void *pw, void *node, bool *match);
 
        css_error (*node_is_target)(void *pw, void *node, bool *match);
        css_error (*node_is_lang)(void *pw, void *node,
                        lwc_string *lang, bool *match);
 
        css_error (*node_presentational_hint)(void *pw, void *node,
                        uint32_t *nhints, css_hint **hints);
 
        css_error (*ua_default_for_property)(void *pw, uint32_t property,
                        css_hint *hint);
 
        css_error (*set_libcss_node_data)(void *pw, void *node,
                        void *libcss_node_data);
        css_error (*get_libcss_node_data)(void *pw, void *node,
                        void **libcss_node_data);
} css_select_handler;
 
typedef struct css_select_font_faces_results {
        css_font_face **font_faces;
        uint32_t n_font_faces;
} css_select_font_faces_results;
 
typedef enum {
        CSS_NODE_DELETED,
        CSS_NODE_MODIFIED,
        CSS_NODE_ANCESTORS_MODIFIED,
        CSS_NODE_CLONED
} css_node_data_action;
 
css_error css_libcss_node_data_handler(css_select_handler *handler,
                css_node_data_action action, void *pw, void *node,
                void *clone_node, void *libcss_node_data);
 
css_error css_select_ctx_create(css_select_ctx **result);
css_error css_select_ctx_destroy(css_select_ctx *ctx);
 
css_error css_select_ctx_append_sheet(css_select_ctx *ctx,
                const css_stylesheet *sheet,
                css_origin origin, const char *media);
css_error css_select_ctx_insert_sheet(css_select_ctx *ctx,
                const css_stylesheet *sheet, uint32_t index,
                css_origin origin, const char *media);
css_error css_select_ctx_remove_sheet(css_select_ctx *ctx,
                const css_stylesheet *sheet);
 
css_error css_select_ctx_count_sheets(css_select_ctx *ctx, uint32_t *count);
css_error css_select_ctx_get_sheet(css_select_ctx *ctx, uint32_t index,
                const css_stylesheet **sheet);
 
css_error css_select_default_style(css_select_ctx *ctx,
                css_select_handler *handler, void *pw,
                css_computed_style **style);
css_error css_select_style(css_select_ctx *ctx, void *node,
                const css_unit_ctx *unit_ctx,
                const css_media *media, const css_stylesheet *inline_style,
                css_select_handler *handler, void *pw,
                css_select_results **result);
css_error css_select_results_destroy(css_select_results *results);
 
css_error css_select_font_faces(css_select_ctx *ctx,
                const css_media *media,
                const css_unit_ctx *unit_ctx,
                lwc_string *font_family,
                css_select_font_faces_results **result);
css_error css_select_font_faces_results_destroy(
                css_select_font_faces_results *results);
 
#ifdef __cplusplus
}
#endif
 
#endif