411 lines
12 KiB
C
411 lines
12 KiB
C
/*
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* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file
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* Content for text/html (private data).
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*/
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#ifndef NETSURF_RENDER_HTML_INTERNAL_H_
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#define NETSURF_RENDER_HTML_INTERNAL_H_
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#include <libcss/libcss.h>
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#include "content/handlers/css/utils.h"
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#include "content/content_protected.h"
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#include "desktop/selection.h"
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#include "render/html.h"
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struct gui_layout_table;
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typedef enum {
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HTML_DRAG_NONE, /** No drag */
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HTML_DRAG_SELECTION, /** Own; Text selection */
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HTML_DRAG_SCROLLBAR, /** Not own; drag in scrollbar widget */
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HTML_DRAG_TEXTAREA_SELECTION, /** Not own; drag in textarea widget */
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HTML_DRAG_TEXTAREA_SCROLLBAR, /** Not own; drag in textarea widget */
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HTML_DRAG_CONTENT_SELECTION, /** Not own; drag in child content */
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HTML_DRAG_CONTENT_SCROLL /** Not own; drag in child content */
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} html_drag_type;
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union html_drag_owner {
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bool no_owner;
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struct box *content;
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struct scrollbar *scrollbar;
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struct box *textarea;
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}; /**< For drags we don't own */
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typedef enum {
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HTML_SELECTION_NONE, /** No selection */
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HTML_SELECTION_TEXTAREA, /** Selection in one of our textareas */
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HTML_SELECTION_SELF, /** Selection in this html content */
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HTML_SELECTION_CONTENT /** Selection in child content */
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} html_selection_type;
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union html_selection_owner {
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bool none;
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struct box *textarea;
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struct box *content;
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}; /**< For getting at selections in this content or things in this content */
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typedef enum {
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HTML_FOCUS_SELF, /** Focus is our own */
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HTML_FOCUS_CONTENT, /** Focus belongs to child content */
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HTML_FOCUS_TEXTAREA /** Focus belongs to textarea */
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} html_focus_type;
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union html_focus_owner {
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bool self;
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struct box *textarea;
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struct box *content;
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}; /**< For directing input */
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/** Data specific to CONTENT_HTML. */
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typedef struct html_content {
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struct content base;
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dom_hubbub_parser *parser; /**< Parser object handle */
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bool parse_completed; /**< Whether the parse has been completed */
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/** Document tree */
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dom_document *document;
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/** Quirkyness of document */
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dom_document_quirks_mode quirks;
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/** Encoding of source, NULL if unknown. */
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char *encoding;
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/** Source of encoding information. */
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dom_hubbub_encoding_source encoding_source;
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/** Base URL (may be a copy of content->url). */
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nsurl *base_url;
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/** Base target */
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char *base_target;
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/** CSS length conversion context for document. */
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nscss_len_ctx len_ctx;
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/** Content has been aborted in the LOADING state */
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bool aborted;
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/** Whether a meta refresh has been handled */
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bool refresh;
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/** Whether a layout (reflow) is in progress */
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bool reflowing;
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/** Whether scripts are enabled for this content */
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bool enable_scripting;
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/* Title element node */
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dom_node *title;
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/** A talloc context purely for the render box tree */
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int *bctx;
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/** Box tree, or NULL. */
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struct box *layout;
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/** Document background colour. */
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colour background_colour;
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/** Font callback table */
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const struct gui_layout_table *font_func;
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/** Number of entries in scripts */
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unsigned int scripts_count;
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/** Scripts */
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struct html_script *scripts;
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/** javascript context */
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struct jscontext *jscontext;
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/** Number of entries in stylesheet_content. */
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unsigned int stylesheet_count;
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/** Stylesheets. Each may be NULL. */
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struct html_stylesheet *stylesheets;
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/**< Style selection context */
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css_select_ctx *select_ctx;
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/**< Universal selector */
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lwc_string *universal;
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/** Number of entries in object_list. */
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unsigned int num_objects;
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/** List of objects. */
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struct content_html_object *object_list;
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/** Forms, in reverse order to document. */
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struct form *forms;
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/** Hash table of imagemaps. */
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struct imagemap **imagemaps;
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/** Browser window containing this document, or NULL if not open. */
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struct browser_window *bw;
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/** Frameset information */
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struct content_html_frames *frameset;
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/** Inline frame information */
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struct content_html_iframe *iframe;
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/** Content of type CONTENT_HTML containing this, or NULL if not an
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* object within a page. */
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struct html_content *page;
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/** Current drag type */
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html_drag_type drag_type;
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/** Widget capturing all mouse events */
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union html_drag_owner drag_owner;
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/** Current selection state */
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html_selection_type selection_type;
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/** Current selection owner */
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union html_selection_owner selection_owner;
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/** Current input focus target type */
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html_focus_type focus_type;
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/** Current input focus target */
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union html_focus_owner focus_owner;
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/** HTML content's own text selection object */
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struct selection sel;
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/** Open core-handled form SELECT menu,
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* or NULL if none currently open. */
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struct form_control *visible_select_menu;
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/** Context for free text search, or NULL if none */
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struct search_context *search;
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/** Search string or NULL */
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char *search_string;
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} html_content;
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/** Render padding and margin box outlines in html_redraw(). */
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extern bool html_redraw_debug;
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void html__redraw_a_box(html_content *html, struct box *box);
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/**
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* Set our drag status, and inform whatever owns the content
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*
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* \param html HTML content
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* \param drag_type Type of drag
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* \param drag_owner What owns the drag
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* \param rect Pointer movement bounds
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*/
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void html_set_drag_type(html_content *html, html_drag_type drag_type,
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union html_drag_owner drag_owner, const struct rect *rect);
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/**
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* Set our selection status, and inform whatever owns the content
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*
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* \param html HTML content
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* \param selection_type Type of selection
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* \param selection_owner What owns the selection
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* \param read_only True iff selection is read only
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*/
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void html_set_selection(html_content *html, html_selection_type selection_type,
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union html_selection_owner selection_owner, bool read_only);
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/**
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* Set our input focus, and inform whatever owns the content
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*
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* \param html HTML content
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* \param focus_type Type of input focus
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* \param focus_owner What owns the focus
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* \param hide_caret True iff caret to be hidden
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* \param x Carret x-coord rel to owner
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* \param y Carret y-coord rel to owner
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* \param height Carret height
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* \param clip Carret clip rect
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*/
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void html_set_focus(html_content *html, html_focus_type focus_type,
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union html_focus_owner focus_owner, bool hide_caret,
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int x, int y, int height, const struct rect *clip);
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struct browser_window *html_get_browser_window(struct content *c);
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/**
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* Complete conversion of an HTML document
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*
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* \param htmlc Content to convert
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*/
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void html_finish_conversion(html_content *htmlc);
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/**
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* Test if an HTML content conversion can begin
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*
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* \param htmlc html content to test
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* \return true iff the html content conversion can begin
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*/
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bool html_can_begin_conversion(html_content *htmlc);
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/**
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* Begin conversion of an HTML document
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*
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* \param htmlc Content to convert
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*/
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bool html_begin_conversion(html_content *htmlc);
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/* in render/html_redraw.c */
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bool html_redraw(struct content *c, struct content_redraw_data *data,
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const struct rect *clip, const struct redraw_context *ctx);
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/* in render/html_redraw_border.c */
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bool html_redraw_borders(struct box *box, int x_parent, int y_parent,
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int p_width, int p_height, const struct rect *clip, float scale,
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const struct redraw_context *ctx);
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bool html_redraw_inline_borders(struct box *box, struct rect b,
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const struct rect *clip, float scale, bool first, bool last,
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const struct redraw_context *ctx);
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/* in render/html_interaction.c */
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void html_mouse_track(struct content *c, struct browser_window *bw,
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browser_mouse_state mouse, int x, int y);
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void html_mouse_action(struct content *c, struct browser_window *bw,
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browser_mouse_state mouse, int x, int y);
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bool html_keypress(struct content *c, uint32_t key);
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void html_overflow_scroll_callback(void *client_data,
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struct scrollbar_msg_data *scrollbar_data);
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void html_search(struct content *c, void *context,
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search_flags_t flags, const char *string);
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void html_search_clear(struct content *c);
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/* in render/html_script.c */
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dom_hubbub_error html_process_script(void *ctx, dom_node *node);
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/**
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* Attempt script execution for defer and async scripts
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*
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* execute scripts using algorithm found in:
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* http://www.whatwg.org/specs/web-apps/current-work/multipage/scripting-1.html#the-script-element
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*
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* \param htmlc html content.
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* \return NSERROR_OK error code.
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*/
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nserror html_script_exec(html_content *htmlc);
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/**
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* Free all script resources and references for a html content.
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*
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* \param htmlc html content.
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* \return NSERROR_OK or error code.
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*/
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nserror html_script_free(html_content *htmlc);
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/**
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* Ensure the html content javascript context is invalidated.
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*
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* \param htmlc html content.
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* \return NSERROR_OK or error code.
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*/
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nserror html_script_invalidate_ctx(html_content *htmlc);
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/* in render/html_forms.c */
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struct form *html_forms_get_forms(const char *docenc, dom_html_document *doc);
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struct form_control *html_forms_get_control_for_node(struct form *forms,
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dom_node *node);
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/* in render/html_css.c */
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nserror html_css_init(void);
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void html_css_fini(void);
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/**
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* Initialise core stylesheets for a content
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*
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* \param c content structure to update
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* \return nserror
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*/
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nserror html_css_new_stylesheets(html_content *c);
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nserror html_css_quirks_stylesheets(html_content *c);
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nserror html_css_free_stylesheets(html_content *html);
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bool html_css_process_link(html_content *htmlc, dom_node *node);
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bool html_css_process_style(html_content *htmlc, dom_node *node);
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bool html_css_update_style(html_content *c, dom_node *style);
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nserror html_css_new_selection_context(html_content *c,
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css_select_ctx **ret_select_ctx);
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/* in render/html_css_fetcher.c */
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/**
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* Register the fetcher for the pseudo x-ns-css scheme.
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*
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* \return NSERROR_OK on successful registration or error code on failure.
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*/
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nserror html_css_fetcher_register(void);
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nserror html_css_fetcher_add_item(dom_string *data, nsurl *base_url,
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uint32_t *key);
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/* in render/html_object.c */
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/**
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* Start a fetch for an object required by a page.
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*
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* \param c content of type CONTENT_HTML
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* \param url URL of object to fetch (copied)
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* \param box box that will contain the object
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* \param permitted_types bitmap of acceptable types
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* \param available_width estimate of width of object
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* \param available_height estimate of height of object
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* \param background this is a background image
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* \return true on success, false on memory exhaustion
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*/
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bool html_fetch_object(html_content *c, nsurl *url, struct box *box,
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content_type permitted_types,
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int available_width, int available_height,
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bool background);
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nserror html_object_free_objects(html_content *html);
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nserror html_object_close_objects(html_content *html);
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nserror html_object_open_objects(html_content *html, struct browser_window *bw);
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nserror html_object_abort_objects(html_content *html);
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/* Events */
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/**
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* Construct an event and fire it at the DOM
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*
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*/
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bool fire_dom_event(dom_string *type, dom_node *target,
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bool bubbles, bool cancelable);
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/* Useful dom_string pointers */
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struct dom_string;
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extern struct dom_string *html_dom_string_map;
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extern struct dom_string *html_dom_string_id;
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extern struct dom_string *html_dom_string_name;
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extern struct dom_string *html_dom_string_area;
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extern struct dom_string *html_dom_string_a;
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extern struct dom_string *html_dom_string_nohref;
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extern struct dom_string *html_dom_string_href;
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extern struct dom_string *html_dom_string_target;
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extern struct dom_string *html_dom_string_shape;
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extern struct dom_string *html_dom_string_default;
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extern struct dom_string *html_dom_string_rect;
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extern struct dom_string *html_dom_string_rectangle;
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extern struct dom_string *html_dom_string_coords;
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extern struct dom_string *html_dom_string_circle;
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extern struct dom_string *html_dom_string_poly;
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extern struct dom_string *html_dom_string_polygon;
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extern struct dom_string *html_dom_string_text_javascript;
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extern struct dom_string *html_dom_string_type;
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extern struct dom_string *html_dom_string_src;
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#endif
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