netsurf/render/html_internal.h

/*
 * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/** \file
 * Content for text/html (private data).
 */

#ifndef NETSURF_RENDER_HTML_INTERNAL_H_
#define NETSURF_RENDER_HTML_INTERNAL_H_

#include "content/content_protected.h"
#include "desktop/selection.h"
#include "render/html.h"

typedef enum {
	HTML_DRAG_NONE,			/** No drag */
	HTML_DRAG_SELECTION,		/** Own; Text selection */
	HTML_DRAG_SCROLLBAR,		/** Not own; drag in scrollbar widget */
	HTML_DRAG_TEXTAREA_SELECTION,	/** Not own; drag in textarea widget */
	HTML_DRAG_TEXTAREA_SCROLLBAR,	/** Not own; drag in textarea widget */
	HTML_DRAG_CONTENT_SELECTION,	/** Not own; drag in child content */
	HTML_DRAG_CONTENT_SCROLL	/** Not own; drag in child content */
} html_drag_type;
union html_drag_owner {
	bool no_owner;
	struct box *content;
	struct scrollbar *scrollbar;
	struct box *textarea;
}; /**< For drags we don't own */

/** Data specific to CONTENT_HTML. */
typedef struct html_content {
	struct content base;

	dom_hubbub_parser *parser; /**< Parser object handle */

	/** Document tree */
	dom_document *document;
	/** Quirkyness of document */
	dom_document_quirks_mode quirks;

	/** Encoding of source, NULL if unknown. */
	char *encoding;
	/** Source of encoding information. */
	dom_hubbub_encoding_source encoding_source;

	/** Base URL (may be a copy of content->url). */
	nsurl *base_url;
	/** Base target */
	char *base_target;

	/** Content has been aborted in the LOADING state */
	bool aborted;

        /** A talloc context purely for the render box tree */
	int *bctx;
	/** Box tree, or NULL. */
	struct box *layout;
	/** Document background colour. */
	colour background_colour;
	/** Font callback table */
	const struct font_functions *font_func;

	/** Number of entries in scripts */
	unsigned int scripts_count;
	/** Scripts */
	struct html_script *scripts;
	/** javascript context */
	struct jscontext *jscontext;

	/** Number of entries in stylesheet_content. */
	unsigned int stylesheet_count;
	/** Stylesheets. Each may be NULL. */
	struct html_stylesheet *stylesheets;
	/**< Style selection context */
	css_select_ctx *select_ctx;
	/**< Universal selector */
	lwc_string *universal;

	/** Number of entries in object_list. */
	unsigned int num_objects;
	/** List of objects. */
	struct content_html_object *object_list;
	/** Forms, in reverse order to document. */
	struct form *forms;
	/** Hash table of imagemaps. */
	struct imagemap **imagemaps;

	/** Browser window containing this document, or NULL if not open. */
	struct browser_window *bw;

	/** Frameset information */
	struct content_html_frames *frameset;

	/** Inline frame information */
	struct content_html_iframe *iframe;

	/** Content of type CONTENT_HTML containing this, or NULL if not an 
	 * object within a page. */
	struct html_content *page;

	/* Current drag type */
	html_drag_type drag_type;
	/** Widget capturing all mouse events */
	union html_drag_owner drag_owner;

	/** Open core-handled form SELECT menu,
	 *  or NULL if none currently open. */
	struct form_control *visible_select_menu;

	/** Selection state */
	struct selection sel;

	/** Context for free text search, or NULL if none */
	struct search_context *search;

} html_content;


bool html_fetch_object(html_content *c, nsurl *url, struct box *box,
		content_type permitted_types,
		int available_width, int available_height,
		bool background);

void html_set_status(html_content *c, const char *extra);

void html__redraw_a_box(html_content *html, struct box *box);

/**
 * Set our drag status, and inform whatever owns the content
 *
 * \param html		HTML content
 * \param drag_type	Type of drag
 * \param drag_owner	What owns the drag
 * \param rect		Pointer movement bounds
 */
void html_set_drag_type(html_content *html, html_drag_type drag_type,
		union html_drag_owner drag_owner, const struct rect *rect);

struct browser_window *html_get_browser_window(struct content *c);
struct search_context *html_get_search(struct content *c);
void html_set_search(struct content *c, struct search_context *s);

/**
 * Complete conversion of an HTML document
 *
 * \param htmlc  Content to convert
 */
void html_finish_conversion(html_content *htmlc);

/**
 * Begin conversion of an HTML document
 *
 * \param htmlc Content to convert
 */
bool html_begin_conversion(html_content *htmlc);

/* in render/html_redraw.c */
bool html_redraw(struct content *c, struct content_redraw_data *data,
		const struct rect *clip, const struct redraw_context *ctx);

/* in render/html_interaction.c */
void html_mouse_track(struct content *c, struct browser_window *bw,
			browser_mouse_state mouse, int x, int y);
void html_mouse_action(struct content *c, struct browser_window *bw,
			browser_mouse_state mouse, int x, int y);
void html_overflow_scroll_callback(void *client_data,
		struct scrollbar_msg_data *scrollbar_data);


/* in render/html_script.c */
dom_hubbub_error  html_process_script(void *ctx, dom_node *node);
void html_free_scripts(html_content *html);
bool html_scripts_exec(html_content *c);

/* in render/html_forms.c */
struct form *html_forms_get_forms(const char *docenc, dom_html_document *doc);
struct form_control *html_forms_get_control_for_node(struct form *forms,
		dom_node *node);

/* Useful dom_string pointers */
struct dom_string;

extern struct dom_string *html_dom_string_map;
extern struct dom_string *html_dom_string_id;
extern struct dom_string *html_dom_string_name;
extern struct dom_string *html_dom_string_area;
extern struct dom_string *html_dom_string_a;
extern struct dom_string *html_dom_string_nohref;
extern struct dom_string *html_dom_string_href;
extern struct dom_string *html_dom_string_target;
extern struct dom_string *html_dom_string_shape;
extern struct dom_string *html_dom_string_default;
extern struct dom_string *html_dom_string_rect;
extern struct dom_string *html_dom_string_rectangle;
extern struct dom_string *html_dom_string_coords;
extern struct dom_string *html_dom_string_circle;
extern struct dom_string *html_dom_string_poly;
extern struct dom_string *html_dom_string_polygon;
extern struct dom_string *html_dom_string_text_javascript;
extern struct dom_string *html_dom_string_type;
extern struct dom_string *html_dom_string_src;

#endif