mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-05 04:11:56 +03:00
3145 lines
75 KiB
C
3145 lines
75 KiB
C
/*
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* Copyright 2005 James Bursa <bursa@users.sourceforge.net>
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* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
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* Copyright 2005 John M Bell <jmb202@ecs.soton.ac.uk>
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* Copyright 2006 Richard Wilson <info@tinct.net>
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* Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
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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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* Implementation of conversion from DOM tree to box tree.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include "utils/config.h"
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#include "utils/nsoption.h"
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#include "utils/corestrings.h"
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#include "utils/log.h"
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#include "utils/messages.h"
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#include "utils/talloc.h"
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#include "utils/string.h"
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#include "utils/ascii.h"
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#include "netsurf/css.h"
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#include "netsurf/misc.h"
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#include "netsurf/plot_style.h"
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#include "content/content_protected.h"
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#include "css/hints.h"
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#include "css/select.h"
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#include "css/utils.h"
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#include "desktop/gui_internal.h"
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#include "html/html.h"
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#include "html/box.h"
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#include "html/box_textarea.h"
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#include "html/form_internal.h"
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#include "html/html_internal.h"
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/**
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* Context for box tree construction
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*/
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struct box_construct_ctx {
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html_content *content; /**< Content we're constructing for */
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dom_node *n; /**< Current node to process */
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struct box *root_box; /**< Root box in the tree */
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box_construct_complete_cb cb; /**< Callback to invoke on completion */
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int *bctx; /**< talloc context */
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};
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/**
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* Transient properties for construction of current node
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*/
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struct box_construct_props {
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/** Style from which to inherit, or NULL if none */
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const css_computed_style *parent_style;
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/** Current link target, or NULL if none */
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nsurl *href;
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/** Current frame target, or NULL if none */
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const char *target;
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/** Current title attribute, or NULL if none */
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const char *title;
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/** Identity of the current block-level container */
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struct box *containing_block;
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/** Current container for inlines, or NULL if none
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* \note If non-NULL, will be the last child of containing_block */
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struct box *inline_container;
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/** Whether the current node is the root of the DOM tree */
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bool node_is_root;
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};
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static const content_type image_types = CONTENT_IMAGE;
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/* the strings are not important, since we just compare the pointers */
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const char *TARGET_SELF = "_self";
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const char *TARGET_PARENT = "_parent";
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const char *TARGET_TOP = "_top";
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const char *TARGET_BLANK = "_blank";
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static void convert_xml_to_box(struct box_construct_ctx *ctx);
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static bool box_construct_element(struct box_construct_ctx *ctx,
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bool *convert_children);
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static void box_construct_element_after(dom_node *n, html_content *content);
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static bool box_construct_text(struct box_construct_ctx *ctx);
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static css_select_results * box_get_style(html_content *c,
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const css_computed_style *parent_style,
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const css_computed_style *root_style, dom_node *n);
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static void box_text_transform(char *s, unsigned int len,
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enum css_text_transform_e tt);
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#define BOX_SPECIAL_PARAMS dom_node *n, html_content *content, \
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struct box *box, bool *convert_children
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static bool box_a(BOX_SPECIAL_PARAMS);
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static bool box_body(BOX_SPECIAL_PARAMS);
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static bool box_br(BOX_SPECIAL_PARAMS);
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static bool box_image(BOX_SPECIAL_PARAMS);
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static bool box_textarea(BOX_SPECIAL_PARAMS);
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static bool box_select(BOX_SPECIAL_PARAMS);
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static bool box_input(BOX_SPECIAL_PARAMS);
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static bool box_button(BOX_SPECIAL_PARAMS);
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static bool box_frameset(BOX_SPECIAL_PARAMS);
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static bool box_create_frameset(struct content_html_frames *f, dom_node *n,
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html_content *content);
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static bool box_select_add_option(struct form_control *control, dom_node *n);
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static bool box_noscript(BOX_SPECIAL_PARAMS);
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static bool box_object(BOX_SPECIAL_PARAMS);
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static bool box_embed(BOX_SPECIAL_PARAMS);
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static bool box_pre(BOX_SPECIAL_PARAMS);
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static bool box_iframe(BOX_SPECIAL_PARAMS);
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static bool box_get_attribute(dom_node *n, const char *attribute,
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void *context, char **value);
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/* element_table must be sorted by name */
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struct element_entry {
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char name[10]; /* element type */
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bool (*convert)(BOX_SPECIAL_PARAMS);
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};
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static const struct element_entry element_table[] = {
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{"a", box_a},
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{"body", box_body},
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{"br", box_br},
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{"button", box_button},
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{"embed", box_embed},
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{"frameset", box_frameset},
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{"iframe", box_iframe},
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{"img", box_image},
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{"input", box_input},
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{"noscript", box_noscript},
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{"object", box_object},
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{"pre", box_pre},
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{"select", box_select},
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{"textarea", box_textarea}
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};
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#define ELEMENT_TABLE_COUNT (sizeof(element_table) / sizeof(element_table[0]))
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/**
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* Construct a box tree from an xml tree and stylesheets.
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*
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* \param n xml tree
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* \param c content of type CONTENT_HTML to construct box tree in
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* \param cb callback to report conversion completion
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* \return netsurf error code indicating status of call
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*/
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nserror dom_to_box(dom_node *n, html_content *c, box_construct_complete_cb cb)
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{
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struct box_construct_ctx *ctx;
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if (c->bctx == NULL) {
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/* create a context allocation for this box tree */
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c->bctx = talloc_zero(0, int);
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if (c->bctx == NULL) {
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return NSERROR_NOMEM;
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}
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}
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ctx = malloc(sizeof(*ctx));
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if (ctx == NULL) {
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return NSERROR_NOMEM;
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}
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ctx->content = c;
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ctx->n = dom_node_ref(n);
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ctx->root_box = NULL;
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ctx->cb = cb;
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ctx->bctx = c->bctx;
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return guit->misc->schedule(0, (void *)convert_xml_to_box, ctx);
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}
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/* mapping from CSS display to box type
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* this table must be in sync with libcss' css_display enum */
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static const box_type box_map[] = {
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0, /*CSS_DISPLAY_INHERIT,*/
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BOX_INLINE, /*CSS_DISPLAY_INLINE,*/
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BOX_BLOCK, /*CSS_DISPLAY_BLOCK,*/
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BOX_BLOCK, /*CSS_DISPLAY_LIST_ITEM,*/
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BOX_INLINE, /*CSS_DISPLAY_RUN_IN,*/
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BOX_INLINE_BLOCK, /*CSS_DISPLAY_INLINE_BLOCK,*/
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BOX_TABLE, /*CSS_DISPLAY_TABLE,*/
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BOX_TABLE, /*CSS_DISPLAY_INLINE_TABLE,*/
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BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_ROW_GROUP,*/
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BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_HEADER_GROUP,*/
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BOX_TABLE_ROW_GROUP, /*CSS_DISPLAY_TABLE_FOOTER_GROUP,*/
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BOX_TABLE_ROW, /*CSS_DISPLAY_TABLE_ROW,*/
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BOX_NONE, /*CSS_DISPLAY_TABLE_COLUMN_GROUP,*/
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BOX_NONE, /*CSS_DISPLAY_TABLE_COLUMN,*/
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BOX_TABLE_CELL, /*CSS_DISPLAY_TABLE_CELL,*/
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BOX_INLINE, /*CSS_DISPLAY_TABLE_CAPTION,*/
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BOX_NONE /*CSS_DISPLAY_NONE*/
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};
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static inline struct box *box_for_node(dom_node *n)
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{
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struct box *box = NULL;
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dom_exception err;
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err = dom_node_get_user_data(n, corestring_dom___ns_key_box_node_data,
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(void *) &box);
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if (err != DOM_NO_ERR)
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return NULL;
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return box;
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}
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static inline bool box_is_root(dom_node *n)
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{
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dom_node *parent;
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dom_node_type type;
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dom_exception err;
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err = dom_node_get_parent_node(n, &parent);
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if (err != DOM_NO_ERR)
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return false;
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if (parent != NULL) {
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err = dom_node_get_node_type(parent, &type);
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dom_node_unref(parent);
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if (err != DOM_NO_ERR)
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return false;
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if (type != DOM_DOCUMENT_NODE)
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return false;
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}
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return true;
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}
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/**
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* Find the next node in the DOM tree, completing
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* element construction where appropriate.
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*
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* \param n Current node
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* \param content Containing content
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* \param convert_children Whether to consider children of \a n
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* \return Next node to process, or NULL if complete
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*
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* \note \a n will be unreferenced
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*/
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static dom_node *next_node(dom_node *n, html_content *content,
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bool convert_children)
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{
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dom_node *next = NULL;
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bool has_children;
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dom_exception err;
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err = dom_node_has_child_nodes(n, &has_children);
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if (err != DOM_NO_ERR) {
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dom_node_unref(n);
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return NULL;
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}
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if (convert_children && has_children) {
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err = dom_node_get_first_child(n, &next);
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if (err != DOM_NO_ERR) {
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dom_node_unref(n);
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return NULL;
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}
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dom_node_unref(n);
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} else {
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err = dom_node_get_next_sibling(n, &next);
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if (err != DOM_NO_ERR) {
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dom_node_unref(n);
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return NULL;
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}
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if (next != NULL) {
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if (box_for_node(n) != NULL)
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box_construct_element_after(n, content);
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dom_node_unref(n);
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} else {
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if (box_for_node(n) != NULL)
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box_construct_element_after(n, content);
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while (box_is_root(n) == false) {
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dom_node *parent = NULL;
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dom_node *parent_next = NULL;
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err = dom_node_get_parent_node(n, &parent);
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if (err != DOM_NO_ERR) {
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dom_node_unref(n);
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return NULL;
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}
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assert(parent != NULL);
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err = dom_node_get_next_sibling(parent,
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&parent_next);
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if (err != DOM_NO_ERR) {
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dom_node_unref(parent);
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dom_node_unref(n);
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return NULL;
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}
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if (parent_next != NULL) {
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dom_node_unref(parent_next);
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dom_node_unref(parent);
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break;
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}
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dom_node_unref(n);
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n = parent;
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parent = NULL;
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if (box_for_node(n) != NULL) {
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box_construct_element_after(
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n, content);
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}
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}
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if (box_is_root(n) == false) {
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dom_node *parent = NULL;
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err = dom_node_get_parent_node(n, &parent);
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if (err != DOM_NO_ERR) {
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dom_node_unref(n);
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return NULL;
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}
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assert(parent != NULL);
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err = dom_node_get_next_sibling(parent, &next);
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if (err != DOM_NO_ERR) {
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dom_node_unref(parent);
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dom_node_unref(n);
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return NULL;
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}
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if (box_for_node(parent) != NULL) {
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box_construct_element_after(parent,
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content);
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}
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dom_node_unref(parent);
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}
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dom_node_unref(n);
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}
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}
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return next;
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}
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/**
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* Convert an ELEMENT node to a box tree fragment,
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* then schedule conversion of the next ELEMENT node
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*/
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void convert_xml_to_box(struct box_construct_ctx *ctx)
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{
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dom_node *next;
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bool convert_children;
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uint32_t num_processed = 0;
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const uint32_t max_processed_before_yield = 10;
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do {
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convert_children = true;
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assert(ctx->n != NULL);
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if (box_construct_element(ctx, &convert_children) == false) {
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ctx->cb(ctx->content, false);
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dom_node_unref(ctx->n);
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free(ctx);
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return;
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}
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/* Find next element to process, converting text nodes as we go */
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next = next_node(ctx->n, ctx->content, convert_children);
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while (next != NULL) {
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dom_node_type type;
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dom_exception err;
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err = dom_node_get_node_type(next, &type);
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if (err != DOM_NO_ERR) {
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ctx->cb(ctx->content, false);
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dom_node_unref(next);
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free(ctx);
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return;
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}
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if (type == DOM_ELEMENT_NODE)
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break;
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if (type == DOM_TEXT_NODE) {
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ctx->n = next;
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if (box_construct_text(ctx) == false) {
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ctx->cb(ctx->content, false);
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dom_node_unref(ctx->n);
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free(ctx);
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return;
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}
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}
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next = next_node(next, ctx->content, true);
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}
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ctx->n = next;
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if (next == NULL) {
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/* Conversion complete */
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struct box root;
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memset(&root, 0, sizeof(root));
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root.type = BOX_BLOCK;
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root.children = root.last = ctx->root_box;
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root.children->parent = &root;
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/** \todo Remove box_normalise_block */
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if (box_normalise_block(&root, ctx->root_box,
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ctx->content) == false) {
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ctx->cb(ctx->content, false);
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} else {
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ctx->content->layout = root.children;
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ctx->content->layout->parent = NULL;
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ctx->cb(ctx->content, true);
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}
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assert(ctx->n == NULL);
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free(ctx);
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return;
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}
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} while (++num_processed < max_processed_before_yield);
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/* More work to do: schedule a continuation */
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guit->misc->schedule(0, (void *)convert_xml_to_box, ctx);
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}
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/**
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* Construct a list marker box
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*
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* \param box Box to attach marker to
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* \param title Current title attribute
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* \param ctx Box construction context
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* \param parent Current block-level container
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* \return true on success, false on memory exhaustion
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*/
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static bool box_construct_marker(struct box *box, const char *title,
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struct box_construct_ctx *ctx, struct box *parent)
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{
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lwc_string *image_uri;
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struct box *marker;
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marker = box_create(NULL, box->style, false, NULL, NULL, title,
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NULL, ctx->bctx);
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if (marker == false)
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return false;
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marker->type = BOX_BLOCK;
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/** \todo marker content (list-style-type) */
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switch (css_computed_list_style_type(box->style)) {
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case CSS_LIST_STYLE_TYPE_DISC:
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/* 2022 BULLET */
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marker->text = (char *) "\342\200\242";
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marker->length = 3;
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break;
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case CSS_LIST_STYLE_TYPE_CIRCLE:
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/* 25CB WHITE CIRCLE */
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marker->text = (char *) "\342\227\213";
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marker->length = 3;
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break;
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case CSS_LIST_STYLE_TYPE_SQUARE:
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/* 25AA BLACK SMALL SQUARE */
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marker->text = (char *) "\342\226\252";
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marker->length = 3;
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break;
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case CSS_LIST_STYLE_TYPE_DECIMAL:
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case CSS_LIST_STYLE_TYPE_LOWER_ALPHA:
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case CSS_LIST_STYLE_TYPE_LOWER_ROMAN:
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case CSS_LIST_STYLE_TYPE_UPPER_ALPHA:
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case CSS_LIST_STYLE_TYPE_UPPER_ROMAN:
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default:
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if (parent->last) {
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struct box *last = parent->last;
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/* Drill down into last child of parent
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* to find the list marker (if any)
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*
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* Floated list boxes end up as:
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*
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* parent
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* BOX_INLINE_CONTAINER
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* BOX_FLOAT_{LEFT,RIGHT}
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* BOX_BLOCK <-- list box
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* ...
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*/
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while (last != NULL && last->list_marker == NULL) {
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struct box *last_inner = last;
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while (last_inner != NULL) {
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if (last_inner->list_marker != NULL)
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break;
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if (last_inner->type ==
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BOX_INLINE_CONTAINER ||
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last_inner->type ==
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BOX_FLOAT_LEFT ||
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last_inner->type ==
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BOX_FLOAT_RIGHT) {
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last_inner = last_inner->last;
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|
} else {
|
|
last_inner = NULL;
|
|
}
|
|
}
|
|
if (last_inner != NULL) {
|
|
last = last_inner;
|
|
} else {
|
|
last = last->prev;
|
|
}
|
|
}
|
|
|
|
if (last && last->list_marker) {
|
|
marker->rows = last->list_marker->rows + 1;
|
|
}
|
|
}
|
|
|
|
marker->text = talloc_array(ctx->bctx, char, 20);
|
|
if (marker->text == NULL)
|
|
return false;
|
|
|
|
snprintf(marker->text, 20, "%u.", marker->rows);
|
|
marker->length = strlen(marker->text);
|
|
break;
|
|
case CSS_LIST_STYLE_TYPE_NONE:
|
|
marker->text = 0;
|
|
marker->length = 0;
|
|
break;
|
|
}
|
|
|
|
if (css_computed_list_style_image(box->style, &image_uri) == CSS_LIST_STYLE_IMAGE_URI &&
|
|
(image_uri != NULL) &&
|
|
(nsoption_bool(foreground_images) == true)) {
|
|
nsurl *url;
|
|
nserror error;
|
|
|
|
/* TODO: we get a url out of libcss as a lwc string, but
|
|
* earlier we already had it as a nsurl after we
|
|
* nsurl_joined it. Can this be improved?
|
|
* For now, just making another nsurl. */
|
|
error = nsurl_create(lwc_string_data(image_uri), &url);
|
|
if (error != NSERROR_OK)
|
|
return false;
|
|
|
|
if (html_fetch_object(ctx->content, url, marker, image_types,
|
|
ctx->content->base.available_width, 1000, false) ==
|
|
false) {
|
|
nsurl_unref(url);
|
|
return false;
|
|
}
|
|
nsurl_unref(url);
|
|
}
|
|
|
|
box->list_marker = marker;
|
|
marker->parent = box;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Construct the box required for a generated element.
|
|
*
|
|
* \param n XML node of type XML_ELEMENT_NODE
|
|
* \param content Content of type CONTENT_HTML that is being processed
|
|
* \param box Box which may have generated content
|
|
* \param style Complete computed style for pseudo element, or NULL
|
|
*
|
|
* TODO:
|
|
* This is currently incomplete. It just does enough to support the clearfix
|
|
* hack. ( http://www.positioniseverything.net/easyclearing.html )
|
|
*/
|
|
static void box_construct_generate(dom_node *n, html_content *content,
|
|
struct box *box, const css_computed_style *style)
|
|
{
|
|
struct box *gen = NULL;
|
|
enum css_display_e computed_display;
|
|
const css_computed_content_item *c_item;
|
|
|
|
/* Nothing to generate if the parent box is not a block */
|
|
if (box->type != BOX_BLOCK)
|
|
return;
|
|
|
|
/* To determine if an element has a pseudo element, we select
|
|
* for it and test to see if the returned style's content
|
|
* property is set to normal. */
|
|
if (style == NULL ||
|
|
css_computed_content(style, &c_item) ==
|
|
CSS_CONTENT_NORMAL) {
|
|
/* No pseudo element */
|
|
return;
|
|
}
|
|
|
|
/* create box for this element */
|
|
computed_display = ns_computed_display(style, box_is_root(n));
|
|
if (computed_display == CSS_DISPLAY_BLOCK ||
|
|
computed_display == CSS_DISPLAY_TABLE) {
|
|
/* currently only support block level boxes */
|
|
|
|
/** \todo Not wise to drop const from the computed style */
|
|
gen = box_create(NULL, (css_computed_style *) style,
|
|
false, NULL, NULL, NULL, NULL, content->bctx);
|
|
if (gen == NULL) {
|
|
return;
|
|
}
|
|
|
|
/* set box type from computed display */
|
|
gen->type = box_map[ns_computed_display(
|
|
style, box_is_root(n))];
|
|
|
|
box_add_child(box, gen);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Extract transient construction properties
|
|
*
|
|
* \param n Current DOM node to convert
|
|
* \param props Property object to populate
|
|
*/
|
|
static void box_extract_properties(dom_node *n,
|
|
struct box_construct_props *props)
|
|
{
|
|
memset(props, 0, sizeof(*props));
|
|
|
|
props->node_is_root = box_is_root(n);
|
|
|
|
/* Extract properties from containing DOM node */
|
|
if (props->node_is_root == false) {
|
|
dom_node *current_node = n;
|
|
dom_node *parent_node = NULL;
|
|
struct box *parent_box;
|
|
dom_exception err;
|
|
|
|
/* Find ancestor node containing parent box */
|
|
while (true) {
|
|
err = dom_node_get_parent_node(current_node,
|
|
&parent_node);
|
|
if (err != DOM_NO_ERR || parent_node == NULL)
|
|
break;
|
|
|
|
parent_box = box_for_node(parent_node);
|
|
|
|
if (parent_box != NULL) {
|
|
props->parent_style = parent_box->style;
|
|
props->href = parent_box->href;
|
|
props->target = parent_box->target;
|
|
props->title = parent_box->title;
|
|
|
|
dom_node_unref(parent_node);
|
|
break;
|
|
} else {
|
|
if (current_node != n)
|
|
dom_node_unref(current_node);
|
|
current_node = parent_node;
|
|
parent_node = NULL;
|
|
}
|
|
}
|
|
|
|
/* Find containing block (may be parent) */
|
|
while (true) {
|
|
struct box *b;
|
|
|
|
err = dom_node_get_parent_node(current_node,
|
|
&parent_node);
|
|
if (err != DOM_NO_ERR || parent_node == NULL) {
|
|
if (current_node != n)
|
|
dom_node_unref(current_node);
|
|
break;
|
|
}
|
|
|
|
if (current_node != n)
|
|
dom_node_unref(current_node);
|
|
|
|
b = box_for_node(parent_node);
|
|
|
|
/* Children of nodes that created an inline box
|
|
* will generate boxes which are attached as
|
|
* _siblings_ of the box generated for their
|
|
* parent node. Note, however, that we'll still
|
|
* use the parent node's styling as the parent
|
|
* style, above. */
|
|
if (b != NULL && b->type != BOX_INLINE &&
|
|
b->type != BOX_BR) {
|
|
props->containing_block = b;
|
|
|
|
dom_node_unref(parent_node);
|
|
break;
|
|
} else {
|
|
current_node = parent_node;
|
|
parent_node = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Compute current inline container, if any */
|
|
if (props->containing_block != NULL &&
|
|
props->containing_block->last != NULL &&
|
|
props->containing_block->last->type ==
|
|
BOX_INLINE_CONTAINER)
|
|
props->inline_container = props->containing_block->last;
|
|
}
|
|
|
|
/**
|
|
* Construct the box tree for an XML element.
|
|
*
|
|
* \param ctx Tree construction context
|
|
* \param convert_children Whether to convert children
|
|
* \return true on success, false on memory exhaustion
|
|
*/
|
|
|
|
bool box_construct_element(struct box_construct_ctx *ctx,
|
|
bool *convert_children)
|
|
{
|
|
dom_string *title0, *s;
|
|
lwc_string *id = NULL;
|
|
struct box *box = NULL, *old_box;
|
|
css_select_results *styles = NULL;
|
|
struct element_entry *element;
|
|
lwc_string *bgimage_uri;
|
|
dom_exception err;
|
|
struct box_construct_props props;
|
|
const css_computed_style *root_style = NULL;
|
|
|
|
assert(ctx->n != NULL);
|
|
|
|
box_extract_properties(ctx->n, &props);
|
|
|
|
if (props.containing_block != NULL) {
|
|
/* In case the containing block is a pre block, we clear
|
|
* the PRE_STRIP flag since it is not used if we follow
|
|
* the pre with a tag */
|
|
props.containing_block->flags &= ~PRE_STRIP;
|
|
}
|
|
|
|
if (props.node_is_root == false) {
|
|
root_style = ctx->root_box->style;
|
|
}
|
|
|
|
styles = box_get_style(ctx->content, props.parent_style, root_style,
|
|
ctx->n);
|
|
if (styles == NULL)
|
|
return false;
|
|
|
|
/* Extract title attribute, if present */
|
|
err = dom_element_get_attribute(ctx->n, corestring_dom_title, &title0);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
if (title0 != NULL) {
|
|
char *t = squash_whitespace(dom_string_data(title0));
|
|
|
|
dom_string_unref(title0);
|
|
|
|
if (t == NULL)
|
|
return false;
|
|
|
|
props.title = talloc_strdup(ctx->bctx, t);
|
|
|
|
free(t);
|
|
|
|
if (props.title == NULL)
|
|
return false;
|
|
}
|
|
|
|
/* Extract id attribute, if present */
|
|
err = dom_element_get_attribute(ctx->n, corestring_dom_id, &s);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
if (s != NULL) {
|
|
err = dom_string_intern(s, &id);
|
|
if (err != DOM_NO_ERR)
|
|
id = NULL;
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
box = box_create(styles, styles->styles[CSS_PSEUDO_ELEMENT_NONE], false,
|
|
props.href, props.target, props.title, id,
|
|
ctx->bctx);
|
|
if (box == NULL)
|
|
return false;
|
|
|
|
/* If this is the root box, add it to the context */
|
|
if (props.node_is_root)
|
|
ctx->root_box = box;
|
|
|
|
/* Deal with colspan/rowspan */
|
|
err = dom_element_get_attribute(ctx->n, corestring_dom_colspan, &s);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
if (s != NULL) {
|
|
const char *val = dom_string_data(s);
|
|
|
|
if ('0' <= val[0] && val[0] <= '9')
|
|
box->columns = strtol(val, NULL, 10);
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(ctx->n, corestring_dom_rowspan, &s);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
if (s != NULL) {
|
|
const char *val = dom_string_data(s);
|
|
|
|
if ('0' <= val[0] && val[0] <= '9')
|
|
box->rows = strtol(val, NULL, 10);
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* Set box type from computed display */
|
|
if ((css_computed_position(box->style) == CSS_POSITION_ABSOLUTE ||
|
|
css_computed_position(box->style) ==
|
|
CSS_POSITION_FIXED) &&
|
|
(ns_computed_display_static(box->style) ==
|
|
CSS_DISPLAY_INLINE ||
|
|
ns_computed_display_static(box->style) ==
|
|
CSS_DISPLAY_INLINE_BLOCK ||
|
|
ns_computed_display_static(box->style) ==
|
|
CSS_DISPLAY_INLINE_TABLE)) {
|
|
/* Special case for absolute positioning: make absolute inlines
|
|
* into inline block so that the boxes are constructed in an
|
|
* inline container as if they were not absolutely positioned.
|
|
* Layout expects and handles this. */
|
|
box->type = box_map[CSS_DISPLAY_INLINE_BLOCK];
|
|
} else if (props.node_is_root) {
|
|
/* Special case for root element: force it to BLOCK, or the
|
|
* rest of the layout will break. */
|
|
box->type = BOX_BLOCK;
|
|
} else {
|
|
/* Normal mapping */
|
|
box->type = box_map[ns_computed_display(box->style,
|
|
props.node_is_root)];
|
|
}
|
|
|
|
err = dom_node_get_node_name(ctx->n, &s);
|
|
if (err != DOM_NO_ERR || s == NULL)
|
|
return false;
|
|
|
|
/* Special elements */
|
|
element = bsearch(dom_string_data(s), element_table,
|
|
ELEMENT_TABLE_COUNT, sizeof(element_table[0]),
|
|
(int (*)(const void *, const void *)) strcasecmp);
|
|
|
|
dom_string_unref(s);
|
|
|
|
if (element != NULL) {
|
|
/* A special convert function exists for this element */
|
|
if (element->convert(ctx->n, ctx->content, box,
|
|
convert_children) == false)
|
|
return false;
|
|
}
|
|
|
|
/* Handle the :before pseudo element */
|
|
if (!(box->flags & IS_REPLACED)) {
|
|
box_construct_generate(ctx->n, ctx->content, box,
|
|
box->styles->styles[CSS_PSEUDO_ELEMENT_BEFORE]);
|
|
}
|
|
|
|
if (box->type == BOX_NONE || (ns_computed_display(box->style,
|
|
props.node_is_root) == CSS_DISPLAY_NONE &&
|
|
props.node_is_root == false)) {
|
|
css_select_results_destroy(styles);
|
|
box->styles = NULL;
|
|
box->style = NULL;
|
|
|
|
/* Invalidate associated gadget, if any */
|
|
if (box->gadget != NULL) {
|
|
box->gadget->box = NULL;
|
|
box->gadget = NULL;
|
|
}
|
|
|
|
/* Can't do this, because the lifetimes of boxes and gadgets
|
|
* are inextricably linked. Fortunately, talloc will save us
|
|
* (for now) */
|
|
/* box_free_box(box); */
|
|
|
|
*convert_children = false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Attach DOM node to box */
|
|
err = dom_node_set_user_data(ctx->n,
|
|
corestring_dom___ns_key_box_node_data, box, NULL,
|
|
(void *) &old_box);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
/* Attach box to DOM node */
|
|
box->node = dom_node_ref(ctx->n);
|
|
|
|
if (props.inline_container == NULL &&
|
|
(box->type == BOX_INLINE ||
|
|
box->type == BOX_BR ||
|
|
box->type == BOX_INLINE_BLOCK ||
|
|
css_computed_float(box->style) == CSS_FLOAT_LEFT ||
|
|
css_computed_float(box->style) == CSS_FLOAT_RIGHT) &&
|
|
props.node_is_root == false) {
|
|
/* Found an inline child of a block without a current container
|
|
* (i.e. this box is the first child of its parent, or was
|
|
* preceded by block-level siblings) */
|
|
assert(props.containing_block != NULL &&
|
|
"Box must have containing block.");
|
|
|
|
props.inline_container = box_create(NULL, NULL, false, NULL,
|
|
NULL, NULL, NULL, ctx->bctx);
|
|
if (props.inline_container == NULL)
|
|
return false;
|
|
|
|
props.inline_container->type = BOX_INLINE_CONTAINER;
|
|
|
|
box_add_child(props.containing_block, props.inline_container);
|
|
}
|
|
|
|
/* Kick off fetch for any background image */
|
|
if (css_computed_background_image(box->style, &bgimage_uri) ==
|
|
CSS_BACKGROUND_IMAGE_IMAGE && bgimage_uri != NULL &&
|
|
nsoption_bool(background_images) == true) {
|
|
nsurl *url;
|
|
nserror error;
|
|
|
|
/* TODO: we get a url out of libcss as a lwc string, but
|
|
* earlier we already had it as a nsurl after we
|
|
* nsurl_joined it. Can this be improved?
|
|
* For now, just making another nsurl. */
|
|
error = nsurl_create(lwc_string_data(bgimage_uri), &url);
|
|
if (error == NSERROR_OK) {
|
|
/* Fetch image if we got a valid URL */
|
|
if (html_fetch_object(ctx->content, url, box,
|
|
image_types,
|
|
ctx->content->base.available_width,
|
|
1000, true) == false) {
|
|
nsurl_unref(url);
|
|
return false;
|
|
}
|
|
nsurl_unref(url);
|
|
}
|
|
}
|
|
|
|
if (*convert_children)
|
|
box->flags |= CONVERT_CHILDREN;
|
|
|
|
if (box->type == BOX_INLINE || box->type == BOX_BR ||
|
|
box->type == BOX_INLINE_BLOCK) {
|
|
/* Inline container must exist, as we'll have
|
|
* created it above if it didn't */
|
|
assert(props.inline_container != NULL);
|
|
|
|
box_add_child(props.inline_container, box);
|
|
} else {
|
|
if (ns_computed_display(box->style, props.node_is_root) ==
|
|
CSS_DISPLAY_LIST_ITEM) {
|
|
/* List item: compute marker */
|
|
if (box_construct_marker(box, props.title, ctx,
|
|
props.containing_block) == false)
|
|
return false;
|
|
}
|
|
|
|
if (props.node_is_root == false &&
|
|
(css_computed_float(box->style) ==
|
|
CSS_FLOAT_LEFT ||
|
|
css_computed_float(box->style) ==
|
|
CSS_FLOAT_RIGHT)) {
|
|
/* Float: insert a float between the parent and box. */
|
|
struct box *flt = box_create(NULL, NULL, false,
|
|
props.href, props.target, props.title,
|
|
NULL, ctx->bctx);
|
|
if (flt == NULL)
|
|
return false;
|
|
|
|
if (css_computed_float(box->style) == CSS_FLOAT_LEFT)
|
|
flt->type = BOX_FLOAT_LEFT;
|
|
else
|
|
flt->type = BOX_FLOAT_RIGHT;
|
|
|
|
box_add_child(props.inline_container, flt);
|
|
box_add_child(flt, box);
|
|
} else {
|
|
/* Non-floated block-level box: add to containing block
|
|
* if there is one. If we're the root box, then there
|
|
* won't be. */
|
|
if (props.containing_block != NULL)
|
|
box_add_child(props.containing_block, box);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Complete construction of the box tree for an element.
|
|
*
|
|
* \param n DOM node to construct for
|
|
* \param content Containing document
|
|
*
|
|
* This will be called after all children of an element have been processed
|
|
*/
|
|
void box_construct_element_after(dom_node *n, html_content *content)
|
|
{
|
|
struct box_construct_props props;
|
|
struct box *box = box_for_node(n);
|
|
|
|
assert(box != NULL);
|
|
|
|
box_extract_properties(n, &props);
|
|
|
|
if (box->type == BOX_INLINE || box->type == BOX_BR) {
|
|
/* Insert INLINE_END into containing block */
|
|
struct box *inline_end;
|
|
bool has_children;
|
|
dom_exception err;
|
|
|
|
err = dom_node_has_child_nodes(n, &has_children);
|
|
if (err != DOM_NO_ERR)
|
|
return;
|
|
|
|
if (has_children == false ||
|
|
(box->flags & CONVERT_CHILDREN) == 0) {
|
|
/* No children, or didn't want children converted */
|
|
return;
|
|
}
|
|
|
|
if (props.inline_container == NULL) {
|
|
/* Create inline container if we don't have one */
|
|
props.inline_container = box_create(NULL, NULL, false,
|
|
NULL, NULL, NULL, NULL, content->bctx);
|
|
if (props.inline_container == NULL)
|
|
return;
|
|
|
|
props.inline_container->type = BOX_INLINE_CONTAINER;
|
|
|
|
box_add_child(props.containing_block,
|
|
props.inline_container);
|
|
}
|
|
|
|
inline_end = box_create(NULL, box->style, false,
|
|
box->href, box->target, box->title,
|
|
box->id == NULL ? NULL :
|
|
lwc_string_ref(box->id), content->bctx);
|
|
if (inline_end != NULL) {
|
|
inline_end->type = BOX_INLINE_END;
|
|
|
|
assert(props.inline_container != NULL);
|
|
|
|
box_add_child(props.inline_container, inline_end);
|
|
|
|
box->inline_end = inline_end;
|
|
inline_end->inline_end = box;
|
|
}
|
|
} else if (!(box->flags & IS_REPLACED)) {
|
|
/* Handle the :after pseudo element */
|
|
box_construct_generate(n, content, box,
|
|
box->styles->styles[CSS_PSEUDO_ELEMENT_AFTER]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Construct the box tree for an XML text node.
|
|
*
|
|
* \param ctx Tree construction context
|
|
* \return true on success, false on memory exhaustion
|
|
*/
|
|
|
|
bool box_construct_text(struct box_construct_ctx *ctx)
|
|
{
|
|
struct box_construct_props props;
|
|
struct box *box = NULL;
|
|
dom_string *content;
|
|
dom_exception err;
|
|
|
|
assert(ctx->n != NULL);
|
|
|
|
box_extract_properties(ctx->n, &props);
|
|
|
|
assert(props.containing_block != NULL);
|
|
|
|
err = dom_characterdata_get_data(ctx->n, &content);
|
|
if (err != DOM_NO_ERR || content == NULL)
|
|
return false;
|
|
|
|
if (css_computed_white_space(props.parent_style) ==
|
|
CSS_WHITE_SPACE_NORMAL ||
|
|
css_computed_white_space(props.parent_style) ==
|
|
CSS_WHITE_SPACE_NOWRAP) {
|
|
char *text;
|
|
|
|
text = squash_whitespace(dom_string_data(content));
|
|
|
|
dom_string_unref(content);
|
|
|
|
if (text == NULL)
|
|
return false;
|
|
|
|
/* if the text is just a space, combine it with the preceding
|
|
* text node, if any */
|
|
if (text[0] == ' ' && text[1] == 0) {
|
|
if (props.inline_container != NULL) {
|
|
assert(props.inline_container->last != NULL);
|
|
|
|
props.inline_container->last->space =
|
|
UNKNOWN_WIDTH;
|
|
}
|
|
|
|
free(text);
|
|
|
|
return true;
|
|
}
|
|
|
|
if (props.inline_container == NULL) {
|
|
/* Child of a block without a current container
|
|
* (i.e. this box is the first child of its parent, or
|
|
* was preceded by block-level siblings) */
|
|
props.inline_container = box_create(NULL, NULL, false,
|
|
NULL, NULL, NULL, NULL, ctx->bctx);
|
|
if (props.inline_container == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
props.inline_container->type = BOX_INLINE_CONTAINER;
|
|
|
|
box_add_child(props.containing_block,
|
|
props.inline_container);
|
|
}
|
|
|
|
/** \todo Dropping const here is not clever */
|
|
box = box_create(NULL,
|
|
(css_computed_style *) props.parent_style,
|
|
false, props.href, props.target, props.title,
|
|
NULL, ctx->bctx);
|
|
if (box == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
box->type = BOX_TEXT;
|
|
|
|
box->text = talloc_strdup(ctx->bctx, text);
|
|
free(text);
|
|
if (box->text == NULL)
|
|
return false;
|
|
|
|
box->length = strlen(box->text);
|
|
|
|
/* strip ending space char off */
|
|
if (box->length > 1 && box->text[box->length - 1] == ' ') {
|
|
box->space = UNKNOWN_WIDTH;
|
|
box->length--;
|
|
}
|
|
|
|
if (css_computed_text_transform(props.parent_style) !=
|
|
CSS_TEXT_TRANSFORM_NONE)
|
|
box_text_transform(box->text, box->length,
|
|
css_computed_text_transform(
|
|
props.parent_style));
|
|
|
|
box_add_child(props.inline_container, box);
|
|
|
|
if (box->text[0] == ' ') {
|
|
box->length--;
|
|
|
|
memmove(box->text, &box->text[1], box->length);
|
|
|
|
if (box->prev != NULL)
|
|
box->prev->space = UNKNOWN_WIDTH;
|
|
}
|
|
} else {
|
|
/* white-space: pre */
|
|
char *text;
|
|
size_t text_len = dom_string_byte_length(content);
|
|
size_t i;
|
|
char *current;
|
|
enum css_white_space_e white_space =
|
|
css_computed_white_space(props.parent_style);
|
|
|
|
/* note: pre-wrap/pre-line are unimplemented */
|
|
assert(white_space == CSS_WHITE_SPACE_PRE ||
|
|
white_space == CSS_WHITE_SPACE_PRE_LINE ||
|
|
white_space == CSS_WHITE_SPACE_PRE_WRAP);
|
|
|
|
text = malloc(text_len + 1);
|
|
dom_string_unref(content);
|
|
|
|
if (text == NULL)
|
|
return false;
|
|
|
|
memcpy(text, dom_string_data(content), text_len);
|
|
text[text_len] = '\0';
|
|
|
|
/* TODO: Handle tabs properly */
|
|
for (i = 0; i < text_len; i++)
|
|
if (text[i] == '\t')
|
|
text[i] = ' ';
|
|
|
|
if (css_computed_text_transform(props.parent_style) !=
|
|
CSS_TEXT_TRANSFORM_NONE)
|
|
box_text_transform(text, strlen(text),
|
|
css_computed_text_transform(
|
|
props.parent_style));
|
|
|
|
current = text;
|
|
|
|
/* swallow a single leading new line */
|
|
if (props.containing_block->flags & PRE_STRIP) {
|
|
switch (*current) {
|
|
case '\n':
|
|
current++;
|
|
break;
|
|
case '\r':
|
|
current++;
|
|
if (*current == '\n')
|
|
current++;
|
|
break;
|
|
}
|
|
props.containing_block->flags &= ~PRE_STRIP;
|
|
}
|
|
|
|
do {
|
|
size_t len = strcspn(current, "\r\n");
|
|
|
|
char old = current[len];
|
|
|
|
current[len] = 0;
|
|
|
|
if (props.inline_container == NULL) {
|
|
/* Child of a block without a current container
|
|
* (i.e. this box is the first child of its
|
|
* parent, or was preceded by block-level
|
|
* siblings) */
|
|
props.inline_container = box_create(NULL, NULL,
|
|
false, NULL, NULL, NULL, NULL,
|
|
ctx->bctx);
|
|
if (props.inline_container == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
props.inline_container->type =
|
|
BOX_INLINE_CONTAINER;
|
|
|
|
box_add_child(props.containing_block,
|
|
props.inline_container);
|
|
}
|
|
|
|
/** \todo Dropping const isn't clever */
|
|
box = box_create(NULL,
|
|
(css_computed_style *) props.parent_style,
|
|
false, props.href, props.target, props.title,
|
|
NULL, ctx->bctx);
|
|
if (box == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
box->type = BOX_TEXT;
|
|
|
|
box->text = talloc_strdup(ctx->bctx, current);
|
|
if (box->text == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
box->length = strlen(box->text);
|
|
|
|
box_add_child(props.inline_container, box);
|
|
|
|
current[len] = old;
|
|
|
|
current += len;
|
|
|
|
if (current[0] != '\0') {
|
|
/* Linebreak: create new inline container */
|
|
props.inline_container = box_create(NULL, NULL,
|
|
false, NULL, NULL, NULL, NULL,
|
|
ctx->bctx);
|
|
if (props.inline_container == NULL) {
|
|
free(text);
|
|
return false;
|
|
}
|
|
|
|
props.inline_container->type =
|
|
BOX_INLINE_CONTAINER;
|
|
|
|
box_add_child(props.containing_block,
|
|
props.inline_container);
|
|
|
|
if (current[0] == '\r' && current[1] == '\n')
|
|
current += 2;
|
|
else
|
|
current++;
|
|
}
|
|
} while (*current);
|
|
|
|
free(text);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the style for an element.
|
|
*
|
|
* \param c content of type CONTENT_HTML that is being processed
|
|
* \param parent_style style at this point in xml tree, or NULL for root
|
|
* \param root_style root node's style, or NULL for root
|
|
* \param n node in xml tree
|
|
* \return the new style, or NULL on memory exhaustion
|
|
*/
|
|
css_select_results *box_get_style(html_content *c,
|
|
const css_computed_style *parent_style,
|
|
const css_computed_style *root_style, dom_node *n)
|
|
{
|
|
dom_string *s;
|
|
dom_exception err;
|
|
css_stylesheet *inline_style = NULL;
|
|
css_select_results *styles;
|
|
nscss_select_ctx ctx;
|
|
|
|
/* Firstly, construct inline stylesheet, if any */
|
|
err = dom_element_get_attribute(n, corestring_dom_style, &s);
|
|
if (err != DOM_NO_ERR)
|
|
return NULL;
|
|
|
|
if (s != NULL) {
|
|
inline_style = nscss_create_inline_style(
|
|
(const uint8_t *) dom_string_data(s),
|
|
dom_string_byte_length(s),
|
|
c->encoding,
|
|
nsurl_access(c->base_url),
|
|
c->quirks != DOM_DOCUMENT_QUIRKS_MODE_NONE);
|
|
|
|
dom_string_unref(s);
|
|
|
|
if (inline_style == NULL)
|
|
return NULL;
|
|
}
|
|
|
|
/* Populate selection context */
|
|
ctx.ctx = c->select_ctx;
|
|
ctx.quirks = (c->quirks == DOM_DOCUMENT_QUIRKS_MODE_FULL);
|
|
ctx.base_url = c->base_url;
|
|
ctx.universal = c->universal;
|
|
ctx.root_style = root_style;
|
|
ctx.parent_style = parent_style;
|
|
|
|
/* Select style for element */
|
|
styles = nscss_get_style(&ctx, n, &c->media, inline_style);
|
|
|
|
/* No longer need inline style */
|
|
if (inline_style != NULL)
|
|
css_stylesheet_destroy(inline_style);
|
|
|
|
return styles;
|
|
}
|
|
|
|
|
|
/**
|
|
* Apply the CSS text-transform property to given text for its ASCII chars.
|
|
*
|
|
* \param s string to transform
|
|
* \param len length of s
|
|
* \param tt transform type
|
|
*/
|
|
|
|
void box_text_transform(char *s, unsigned int len, enum css_text_transform_e tt)
|
|
{
|
|
unsigned int i;
|
|
if (len == 0)
|
|
return;
|
|
switch (tt) {
|
|
case CSS_TEXT_TRANSFORM_UPPERCASE:
|
|
for (i = 0; i < len; ++i)
|
|
if ((unsigned char) s[i] < 0x80)
|
|
s[i] = toupper(s[i]);
|
|
break;
|
|
case CSS_TEXT_TRANSFORM_LOWERCASE:
|
|
for (i = 0; i < len; ++i)
|
|
if ((unsigned char) s[i] < 0x80)
|
|
s[i] = tolower(s[i]);
|
|
break;
|
|
case CSS_TEXT_TRANSFORM_CAPITALIZE:
|
|
if ((unsigned char) s[0] < 0x80)
|
|
s[0] = toupper(s[0]);
|
|
for (i = 1; i < len; ++i)
|
|
if ((unsigned char) s[i] < 0x80 &&
|
|
isspace(s[i - 1]))
|
|
s[i] = toupper(s[i]);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* \name Special case element handlers
|
|
*
|
|
* These functions are called by box_construct_element() when an element is
|
|
* being converted, according to the entries in element_table.
|
|
*
|
|
* The parameters are the xmlNode, the content for the document, and a partly
|
|
* filled in box structure for the element.
|
|
*
|
|
* Return true on success, false on memory exhaustion. Set *convert_children
|
|
* to false if children of this element in the XML tree should be skipped (for
|
|
* example, if they have been processed in some special way already).
|
|
*
|
|
* Elements ordered as in the HTML 4.01 specification. Section numbers in
|
|
* brackets [] refer to the spec.
|
|
*
|
|
* \{
|
|
*/
|
|
|
|
/**
|
|
* Document body [7.5.1].
|
|
*/
|
|
|
|
bool box_body(BOX_SPECIAL_PARAMS)
|
|
{
|
|
css_color color;
|
|
|
|
css_computed_background_color(box->style, &color);
|
|
if (nscss_color_is_transparent(color))
|
|
content->background_colour = NS_TRANSPARENT;
|
|
else
|
|
content->background_colour = nscss_color_to_ns(color);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Forced line break [9.3.2].
|
|
*/
|
|
|
|
bool box_br(BOX_SPECIAL_PARAMS)
|
|
{
|
|
box->type = BOX_BR;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Preformatted text [9.3.4].
|
|
*/
|
|
|
|
bool box_pre(BOX_SPECIAL_PARAMS)
|
|
{
|
|
box->flags |= PRE_STRIP;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Anchor [12.2].
|
|
*/
|
|
|
|
bool box_a(BOX_SPECIAL_PARAMS)
|
|
{
|
|
bool ok;
|
|
nsurl *url;
|
|
dom_string *s;
|
|
dom_exception err;
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_href, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
ok = box_extract_link(content, s, content->base_url, &url);
|
|
dom_string_unref(s);
|
|
if (!ok)
|
|
return false;
|
|
if (url) {
|
|
if (box->href != NULL)
|
|
nsurl_unref(box->href);
|
|
box->href = url;
|
|
}
|
|
}
|
|
|
|
/* name and id share the same namespace */
|
|
err = dom_element_get_attribute(n, corestring_dom_name, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
lwc_string *lwc_name;
|
|
|
|
err = dom_string_intern(s, &lwc_name);
|
|
|
|
dom_string_unref(s);
|
|
|
|
if (err == DOM_NO_ERR) {
|
|
/* name replaces existing id
|
|
* TODO: really? */
|
|
if (box->id != NULL)
|
|
lwc_string_unref(box->id);
|
|
|
|
box->id = lwc_name;
|
|
}
|
|
}
|
|
|
|
/* target frame [16.3] */
|
|
err = dom_element_get_attribute(n, corestring_dom_target, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc__blank))
|
|
box->target = TARGET_BLANK;
|
|
else if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc__top))
|
|
box->target = TARGET_TOP;
|
|
else if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc__parent))
|
|
box->target = TARGET_PARENT;
|
|
else if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc__self))
|
|
/* the default may have been overridden by a
|
|
* <base target=...>, so this is different to 0 */
|
|
box->target = TARGET_SELF;
|
|
else {
|
|
/* 6.16 says that frame names must begin with [a-zA-Z]
|
|
* This doesn't match reality, so just take anything */
|
|
box->target = talloc_strdup(content->bctx,
|
|
dom_string_data(s));
|
|
if (!box->target) {
|
|
dom_string_unref(s);
|
|
return false;
|
|
}
|
|
}
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Embedded image [13.2].
|
|
*/
|
|
|
|
bool box_image(BOX_SPECIAL_PARAMS)
|
|
{
|
|
bool ok;
|
|
dom_string *s;
|
|
dom_exception err;
|
|
nsurl *url;
|
|
enum css_width_e wtype;
|
|
enum css_height_e htype;
|
|
css_fixed value = 0;
|
|
css_unit wunit = CSS_UNIT_PX;
|
|
css_unit hunit = CSS_UNIT_PX;
|
|
|
|
if (box->style && ns_computed_display(box->style,
|
|
box_is_root(n)) == CSS_DISPLAY_NONE)
|
|
return true;
|
|
|
|
/* handle alt text */
|
|
err = dom_element_get_attribute(n, corestring_dom_alt, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
char *alt = squash_whitespace(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
if (alt == NULL)
|
|
return false;
|
|
box->text = talloc_strdup(content->bctx, alt);
|
|
free(alt);
|
|
if (box->text == NULL)
|
|
return false;
|
|
box->length = strlen(box->text);
|
|
}
|
|
|
|
if (nsoption_bool(foreground_images) == false) {
|
|
return true;
|
|
}
|
|
|
|
/* imagemap associated with this image */
|
|
if (!box_get_attribute(n, "usemap", content->bctx, &box->usemap))
|
|
return false;
|
|
if (box->usemap && box->usemap[0] == '#')
|
|
box->usemap++;
|
|
|
|
/* get image URL */
|
|
err = dom_element_get_attribute(n, corestring_dom_src, &s);
|
|
if (err != DOM_NO_ERR || s == NULL)
|
|
return true;
|
|
|
|
if (box_extract_link(content, s, content->base_url, &url) == false) {
|
|
dom_string_unref(s);
|
|
return false;
|
|
}
|
|
|
|
dom_string_unref(s);
|
|
|
|
if (url == NULL)
|
|
return true;
|
|
|
|
/* start fetch */
|
|
box->flags |= IS_REPLACED;
|
|
ok = html_fetch_object(content, url, box, image_types,
|
|
content->base.available_width, 1000, false);
|
|
nsurl_unref(url);
|
|
|
|
wtype = css_computed_width(box->style, &value, &wunit);
|
|
htype = css_computed_height(box->style, &value, &hunit);
|
|
|
|
if (wtype == CSS_WIDTH_SET && wunit != CSS_UNIT_PCT &&
|
|
htype == CSS_HEIGHT_SET && hunit != CSS_UNIT_PCT) {
|
|
/* We know the dimensions the image will be shown at before it's
|
|
* fetched. */
|
|
box->flags |= REPLACE_DIM;
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
|
|
/**
|
|
* Noscript element
|
|
*/
|
|
|
|
bool box_noscript(BOX_SPECIAL_PARAMS)
|
|
{
|
|
/* If scripting is enabled, do not display the contents of noscript */
|
|
if (content->enable_scripting)
|
|
*convert_children = false;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Destructor for object_params, for <object> elements
|
|
*
|
|
* \param o The object params being destroyed.
|
|
* \return 0 to allow talloc to continue destroying the tree.
|
|
*/
|
|
static int box_object_talloc_destructor(struct object_params *o)
|
|
{
|
|
if (o->codebase != NULL)
|
|
nsurl_unref(o->codebase);
|
|
if (o->classid != NULL)
|
|
nsurl_unref(o->classid);
|
|
if (o->data != NULL)
|
|
nsurl_unref(o->data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Generic embedded object [13.3].
|
|
*/
|
|
|
|
bool box_object(BOX_SPECIAL_PARAMS)
|
|
{
|
|
struct object_params *params;
|
|
struct object_param *param;
|
|
dom_string *codebase, *classid, *data;
|
|
dom_node *c;
|
|
dom_exception err;
|
|
|
|
if (box->style && ns_computed_display(box->style,
|
|
box_is_root(n)) == CSS_DISPLAY_NONE)
|
|
return true;
|
|
|
|
if (box_get_attribute(n, "usemap", content->bctx, &box->usemap) ==
|
|
false)
|
|
return false;
|
|
if (box->usemap && box->usemap[0] == '#')
|
|
box->usemap++;
|
|
|
|
params = talloc(content->bctx, struct object_params);
|
|
if (params == NULL)
|
|
return false;
|
|
|
|
talloc_set_destructor(params, box_object_talloc_destructor);
|
|
|
|
params->data = NULL;
|
|
params->type = NULL;
|
|
params->codetype = NULL;
|
|
params->codebase = NULL;
|
|
params->classid = NULL;
|
|
params->params = NULL;
|
|
|
|
/* codebase, classid, and data are URLs
|
|
* (codebase is the base for the other two) */
|
|
err = dom_element_get_attribute(n, corestring_dom_codebase, &codebase);
|
|
if (err == DOM_NO_ERR && codebase != NULL) {
|
|
if (box_extract_link(content, codebase, content->base_url,
|
|
¶ms->codebase) == false) {
|
|
dom_string_unref(codebase);
|
|
return false;
|
|
}
|
|
dom_string_unref(codebase);
|
|
}
|
|
if (params->codebase == NULL)
|
|
params->codebase = nsurl_ref(content->base_url);
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_classid, &classid);
|
|
if (err == DOM_NO_ERR && classid != NULL) {
|
|
if (box_extract_link(content, classid,
|
|
params->codebase, ¶ms->classid) == false) {
|
|
dom_string_unref(classid);
|
|
return false;
|
|
}
|
|
dom_string_unref(classid);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_data, &data);
|
|
if (err == DOM_NO_ERR && data != NULL) {
|
|
if (box_extract_link(content, data,
|
|
params->codebase, ¶ms->data) == false) {
|
|
dom_string_unref(data);
|
|
return false;
|
|
}
|
|
dom_string_unref(data);
|
|
}
|
|
|
|
if (params->classid == NULL && params->data == NULL)
|
|
/* nothing to embed; ignore */
|
|
return true;
|
|
|
|
/* Don't include ourself */
|
|
if (params->classid != NULL && nsurl_compare(content->base_url,
|
|
params->classid, NSURL_COMPLETE))
|
|
return true;
|
|
|
|
if (params->data != NULL && nsurl_compare(content->base_url,
|
|
params->data, NSURL_COMPLETE))
|
|
return true;
|
|
|
|
/* codetype and type are MIME types */
|
|
if (box_get_attribute(n, "codetype", params,
|
|
¶ms->codetype) == false)
|
|
return false;
|
|
if (box_get_attribute(n, "type", params, ¶ms->type) == false)
|
|
return false;
|
|
|
|
/* classid && !data => classid is used (consult codetype)
|
|
* (classid || !classid) && data => data is used (consult type)
|
|
* !classid && !data => invalid; ignored */
|
|
|
|
if (params->classid != NULL && params->data == NULL &&
|
|
params->codetype != NULL) {
|
|
lwc_string *icodetype;
|
|
lwc_error lerror;
|
|
|
|
lerror = lwc_intern_string(params->codetype,
|
|
strlen(params->codetype), &icodetype);
|
|
if (lerror != lwc_error_ok)
|
|
return false;
|
|
|
|
if (content_factory_type_from_mime_type(icodetype) ==
|
|
CONTENT_NONE) {
|
|
/* can't handle this MIME type */
|
|
lwc_string_unref(icodetype);
|
|
return true;
|
|
}
|
|
|
|
lwc_string_unref(icodetype);
|
|
}
|
|
|
|
if (params->data != NULL && params->type != NULL) {
|
|
lwc_string *itype;
|
|
lwc_error lerror;
|
|
|
|
lerror = lwc_intern_string(params->type, strlen(params->type),
|
|
&itype);
|
|
if (lerror != lwc_error_ok)
|
|
return false;
|
|
|
|
if (content_factory_type_from_mime_type(itype) ==
|
|
CONTENT_NONE) {
|
|
/* can't handle this MIME type */
|
|
lwc_string_unref(itype);
|
|
return true;
|
|
}
|
|
|
|
lwc_string_unref(itype);
|
|
}
|
|
|
|
/* add parameters to linked list */
|
|
err = dom_node_get_first_child(n, &c);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
while (c != NULL) {
|
|
dom_node *next;
|
|
dom_node_type type;
|
|
|
|
err = dom_node_get_node_type(c, &type);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (type == DOM_ELEMENT_NODE) {
|
|
dom_string *name;
|
|
|
|
err = dom_node_get_node_name(c, &name);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (!dom_string_caseless_lwc_isequal(name,
|
|
corestring_lwc_param)) {
|
|
/* The first non-param child is the start of
|
|
* the alt html. Therefore, we should break
|
|
* out of this loop. */
|
|
dom_node_unref(c);
|
|
break;
|
|
}
|
|
|
|
param = talloc(params, struct object_param);
|
|
if (param == NULL) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
param->name = NULL;
|
|
param->value = NULL;
|
|
param->type = NULL;
|
|
param->valuetype = NULL;
|
|
param->next = NULL;
|
|
|
|
if (box_get_attribute(c, "name", param,
|
|
¶m->name) == false) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (box_get_attribute(c, "value", param,
|
|
¶m->value) == false) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (box_get_attribute(c, "type", param,
|
|
¶m->type) == false) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (box_get_attribute(c, "valuetype", param,
|
|
¶m->valuetype) == false) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (param->valuetype == NULL) {
|
|
param->valuetype = talloc_strdup(param, "data");
|
|
if (param->valuetype == NULL) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
param->next = params->params;
|
|
params->params = param;
|
|
}
|
|
|
|
err = dom_node_get_next_sibling(c, &next);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
dom_node_unref(c);
|
|
c = next;
|
|
}
|
|
|
|
box->object_params = params;
|
|
|
|
/* start fetch (MIME type is ok or not specified) */
|
|
box->flags |= IS_REPLACED;
|
|
if (!html_fetch_object(content,
|
|
params->data ? params->data : params->classid,
|
|
box, CONTENT_ANY, content->base.available_width, 1000,
|
|
false))
|
|
return false;
|
|
|
|
*convert_children = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Window subdivision [16.2.1].
|
|
*/
|
|
|
|
bool box_frameset(BOX_SPECIAL_PARAMS)
|
|
{
|
|
bool ok;
|
|
|
|
if (content->frameset) {
|
|
NSLOG(netsurf, INFO, "Error: multiple framesets in document.");
|
|
/* Don't convert children */
|
|
if (convert_children)
|
|
*convert_children = false;
|
|
/* And ignore this spurious frameset */
|
|
box->type = BOX_NONE;
|
|
return true;
|
|
}
|
|
|
|
content->frameset = talloc_zero(content->bctx, struct content_html_frames);
|
|
if (!content->frameset)
|
|
return false;
|
|
|
|
ok = box_create_frameset(content->frameset, n, content);
|
|
if (ok)
|
|
box->type = BOX_NONE;
|
|
|
|
if (convert_children)
|
|
*convert_children = false;
|
|
return ok;
|
|
}
|
|
|
|
|
|
/**
|
|
* Destructor for content_html_frames, for frame elements
|
|
*
|
|
* \param f The frame params being destroyed.
|
|
* \return 0 to allow talloc to continue destroying the tree.
|
|
*/
|
|
static int box_frames_talloc_destructor(struct content_html_frames *f)
|
|
{
|
|
if (f->url != NULL) {
|
|
nsurl_unref(f->url);
|
|
f->url = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Parse a multi-length-list, as defined by HTML 4.01.
|
|
*
|
|
* \param ds dom string to parse
|
|
* \param count updated to number of entries
|
|
* \return array of struct box_multi_length, or 0 on memory exhaustion
|
|
*/
|
|
static struct frame_dimension *
|
|
box_parse_multi_lengths(const dom_string *ds, unsigned int *count)
|
|
{
|
|
char *end;
|
|
unsigned int i, n;
|
|
struct frame_dimension *length;
|
|
const char *s;
|
|
|
|
s = dom_string_data(ds);
|
|
|
|
for (i = 0, n = 1; s[i]; i++)
|
|
if (s[i] == ',')
|
|
n++;
|
|
|
|
length = calloc(n, sizeof(struct frame_dimension));
|
|
if (!length)
|
|
return NULL;
|
|
|
|
for (i = 0; i != n; i++) {
|
|
while (ascii_is_space(*s)) {
|
|
s++;
|
|
}
|
|
length[i].value = strtof(s, &end);
|
|
if (length[i].value <= 0) {
|
|
length[i].value = 1;
|
|
}
|
|
s = end;
|
|
switch (*s) {
|
|
case '%':
|
|
length[i].unit = FRAME_DIMENSION_PERCENT;
|
|
break;
|
|
case '*':
|
|
length[i].unit = FRAME_DIMENSION_RELATIVE;
|
|
break;
|
|
default:
|
|
length[i].unit = FRAME_DIMENSION_PIXELS;
|
|
break;
|
|
}
|
|
while (*s && *s != ',') {
|
|
s++;
|
|
}
|
|
if (*s == ',') {
|
|
s++;
|
|
}
|
|
}
|
|
|
|
*count = n;
|
|
return length;
|
|
}
|
|
|
|
|
|
bool box_create_frameset(struct content_html_frames *f, dom_node *n,
|
|
html_content *content) {
|
|
unsigned int row, col, index, i;
|
|
unsigned int rows = 1, cols = 1;
|
|
dom_string *s;
|
|
dom_exception err;
|
|
nsurl *url;
|
|
struct frame_dimension *row_height = 0, *col_width = 0;
|
|
dom_node *c, *next;
|
|
struct content_html_frames *frame;
|
|
bool default_border = true;
|
|
colour default_border_colour = 0x000000;
|
|
|
|
/* parse rows and columns */
|
|
err = dom_element_get_attribute(n, corestring_dom_rows, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
row_height = box_parse_multi_lengths(s, &rows);
|
|
dom_string_unref(s);
|
|
if (row_height == NULL)
|
|
return false;
|
|
} else {
|
|
row_height = calloc(1, sizeof(struct frame_dimension));
|
|
if (row_height == NULL)
|
|
return false;
|
|
row_height->value = 100;
|
|
row_height->unit = FRAME_DIMENSION_PERCENT;
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_cols, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
col_width = box_parse_multi_lengths(s, &cols);
|
|
dom_string_unref(s);
|
|
if (col_width == NULL) {
|
|
free(row_height);
|
|
return false;
|
|
}
|
|
} else {
|
|
col_width = calloc(1, sizeof(struct frame_dimension));
|
|
if (col_width == NULL) {
|
|
free(row_height);
|
|
return false;
|
|
}
|
|
col_width->value = 100;
|
|
col_width->unit = FRAME_DIMENSION_PERCENT;
|
|
}
|
|
|
|
/* common extension: border="0|1" to control all children */
|
|
err = dom_element_get_attribute(n, corestring_dom_border, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
if ((dom_string_data(s)[0] == '0') &&
|
|
(dom_string_data(s)[1] == '\0'))
|
|
default_border = false;
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* common extension: frameborder="yes|no" to control all children */
|
|
err = dom_element_get_attribute(n, corestring_dom_frameborder, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_no) == 0)
|
|
default_border = false;
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* common extension: bordercolor="#RRGGBB|<named colour>" to control
|
|
*all children */
|
|
err = dom_element_get_attribute(n, corestring_dom_bordercolor, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
css_color color;
|
|
|
|
if (nscss_parse_colour(dom_string_data(s), &color))
|
|
default_border_colour = nscss_color_to_ns(color);
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* update frameset and create default children */
|
|
f->cols = cols;
|
|
f->rows = rows;
|
|
f->scrolling = BW_SCROLLING_NO;
|
|
f->children = talloc_array(content->bctx, struct content_html_frames,
|
|
(rows * cols));
|
|
|
|
talloc_set_destructor(f->children, box_frames_talloc_destructor);
|
|
|
|
for (row = 0; row < rows; row++) {
|
|
for (col = 0; col < cols; col++) {
|
|
index = (row * cols) + col;
|
|
frame = &f->children[index];
|
|
frame->cols = 0;
|
|
frame->rows = 0;
|
|
frame->width = col_width[col];
|
|
frame->height = row_height[row];
|
|
frame->margin_width = 0;
|
|
frame->margin_height = 0;
|
|
frame->name = NULL;
|
|
frame->url = NULL;
|
|
frame->no_resize = false;
|
|
frame->scrolling = BW_SCROLLING_AUTO;
|
|
frame->border = default_border;
|
|
frame->border_colour = default_border_colour;
|
|
frame->children = NULL;
|
|
}
|
|
}
|
|
free(col_width);
|
|
free(row_height);
|
|
|
|
/* create the frameset windows */
|
|
err = dom_node_get_first_child(n, &c);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
for (row = 0; c != NULL && row < rows; row++) {
|
|
for (col = 0; c != NULL && col < cols; col++) {
|
|
while (c != NULL) {
|
|
dom_node_type type;
|
|
dom_string *name;
|
|
|
|
err = dom_node_get_node_type(c, &type);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
err = dom_node_get_node_name(c, &name);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (type != DOM_ELEMENT_NODE ||
|
|
(!dom_string_caseless_lwc_isequal(
|
|
name,
|
|
corestring_lwc_frame) &&
|
|
!dom_string_caseless_lwc_isequal(
|
|
name,
|
|
corestring_lwc_frameset
|
|
))) {
|
|
err = dom_node_get_next_sibling(c,
|
|
&next);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_string_unref(name);
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
dom_string_unref(name);
|
|
dom_node_unref(c);
|
|
c = next;
|
|
} else {
|
|
/* Got a FRAME or FRAMESET element */
|
|
dom_string_unref(name);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (c == NULL)
|
|
break;
|
|
|
|
/* get current frame */
|
|
index = (row * cols) + col;
|
|
frame = &f->children[index];
|
|
|
|
/* nest framesets */
|
|
err = dom_node_get_node_name(c, &s);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_frameset)) {
|
|
dom_string_unref(s);
|
|
frame->border = 0;
|
|
if (box_create_frameset(frame, c,
|
|
content) == false) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
err = dom_node_get_next_sibling(c, &next);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
dom_node_unref(c);
|
|
c = next;
|
|
continue;
|
|
}
|
|
|
|
dom_string_unref(s);
|
|
|
|
/* get frame URL (not required) */
|
|
url = NULL;
|
|
err = dom_element_get_attribute(c, corestring_dom_src, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
box_extract_link(content, s, content->base_url,
|
|
&url);
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* copy url */
|
|
if (url != NULL) {
|
|
/* no self-references */
|
|
if (nsurl_compare(content->base_url, url,
|
|
NSURL_COMPLETE) == false)
|
|
frame->url = url;
|
|
url = NULL;
|
|
}
|
|
|
|
/* fill in specified values */
|
|
err = dom_element_get_attribute(c, corestring_dom_name, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
frame->name = talloc_strdup(content->bctx,
|
|
dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
dom_element_has_attribute(c, corestring_dom_noresize,
|
|
&frame->no_resize);
|
|
|
|
err = dom_element_get_attribute(c, corestring_dom_frameborder,
|
|
&s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
i = atoi(dom_string_data(s));
|
|
frame->border = (i != 0);
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(c, corestring_dom_scrolling, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_yes))
|
|
frame->scrolling = BW_SCROLLING_YES;
|
|
else if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_no))
|
|
frame->scrolling = BW_SCROLLING_NO;
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(c, corestring_dom_marginwidth,
|
|
&s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
frame->margin_width = atoi(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(c, corestring_dom_marginheight,
|
|
&s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
frame->margin_height = atoi(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(c, corestring_dom_bordercolor,
|
|
&s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
css_color color;
|
|
|
|
if (nscss_parse_colour(dom_string_data(s),
|
|
&color))
|
|
frame->border_colour =
|
|
nscss_color_to_ns(color);
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* advance */
|
|
err = dom_node_get_next_sibling(c, &next);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
return false;
|
|
}
|
|
|
|
dom_node_unref(c);
|
|
c = next;
|
|
}
|
|
}
|
|
|
|
/* If the last child wasn't a frame, we still need to unref it */
|
|
if (c != NULL) {
|
|
dom_node_unref(c);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Destructor for content_html_iframe, for <iframe> elements
|
|
*
|
|
* \param f The iframe params being destroyed.
|
|
* \return 0 to allow talloc to continue destroying the tree.
|
|
*/
|
|
static int box_iframes_talloc_destructor(struct content_html_iframe *f)
|
|
{
|
|
if (f->url != NULL) {
|
|
nsurl_unref(f->url);
|
|
f->url = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Inline subwindow [16.5].
|
|
*/
|
|
|
|
bool box_iframe(BOX_SPECIAL_PARAMS)
|
|
{
|
|
nsurl *url;
|
|
dom_string *s;
|
|
dom_exception err;
|
|
struct content_html_iframe *iframe;
|
|
int i;
|
|
|
|
if (box->style && ns_computed_display(box->style,
|
|
box_is_root(n)) == CSS_DISPLAY_NONE)
|
|
return true;
|
|
|
|
if (box->style && css_computed_visibility(box->style) ==
|
|
CSS_VISIBILITY_HIDDEN)
|
|
/* Don't create iframe discriptors for invisible iframes
|
|
* TODO: handle hidden iframes at browser_window generation
|
|
* time instead? */
|
|
return true;
|
|
|
|
/* get frame URL */
|
|
err = dom_element_get_attribute(n, corestring_dom_src, &s);
|
|
if (err != DOM_NO_ERR || s == NULL)
|
|
return true;
|
|
if (box_extract_link(content, s, content->base_url, &url) == false) {
|
|
dom_string_unref(s);
|
|
return false;
|
|
}
|
|
dom_string_unref(s);
|
|
if (url == NULL)
|
|
return true;
|
|
|
|
/* don't include ourself */
|
|
if (nsurl_compare(content->base_url, url, NSURL_COMPLETE)) {
|
|
nsurl_unref(url);
|
|
return true;
|
|
}
|
|
|
|
/* create a new iframe */
|
|
iframe = talloc(content->bctx, struct content_html_iframe);
|
|
if (iframe == NULL) {
|
|
nsurl_unref(url);
|
|
return false;
|
|
}
|
|
|
|
talloc_set_destructor(iframe, box_iframes_talloc_destructor);
|
|
|
|
iframe->box = box;
|
|
iframe->margin_width = 0;
|
|
iframe->margin_height = 0;
|
|
iframe->name = NULL;
|
|
iframe->url = url;
|
|
iframe->scrolling = BW_SCROLLING_AUTO;
|
|
iframe->border = true;
|
|
|
|
/* Add this iframe to the linked list of iframes */
|
|
iframe->next = content->iframe;
|
|
content->iframe = iframe;
|
|
|
|
/* fill in specified values */
|
|
err = dom_element_get_attribute(n, corestring_dom_name, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
iframe->name = talloc_strdup(content->bctx, dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_frameborder, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
i = atoi(dom_string_data(s));
|
|
iframe->border = (i != 0);
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_bordercolor, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
css_color color;
|
|
|
|
if (nscss_parse_colour(dom_string_data(s), &color))
|
|
iframe->border_colour = nscss_color_to_ns(color);
|
|
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_scrolling, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_yes))
|
|
iframe->scrolling = BW_SCROLLING_YES;
|
|
else if (dom_string_caseless_lwc_isequal(s,
|
|
corestring_lwc_no))
|
|
iframe->scrolling = BW_SCROLLING_NO;
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_marginwidth, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
iframe->margin_width = atoi(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_marginheight, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
iframe->margin_height = atoi(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
}
|
|
|
|
/* box */
|
|
assert(box->style);
|
|
box->flags |= IFRAME;
|
|
box->flags |= IS_REPLACED;
|
|
|
|
/* Showing iframe, so don't show alternate content */
|
|
if (convert_children)
|
|
*convert_children = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Helper function for adding textarea widget to box.
|
|
*
|
|
* This is a load of hacks to ensure boxes replaced with textareas
|
|
* can be handled by the layout code.
|
|
*/
|
|
|
|
static bool box_input_text(html_content *html, struct box *box,
|
|
struct dom_node *node)
|
|
{
|
|
struct box *inline_container, *inline_box;
|
|
|
|
box->type = BOX_INLINE_BLOCK;
|
|
|
|
inline_container = box_create(NULL, 0, false, 0, 0, 0, 0, html->bctx);
|
|
if (!inline_container)
|
|
return false;
|
|
inline_container->type = BOX_INLINE_CONTAINER;
|
|
inline_box = box_create(NULL, box->style, false, 0, 0, box->title, 0,
|
|
html->bctx);
|
|
if (!inline_box)
|
|
return false;
|
|
inline_box->type = BOX_TEXT;
|
|
inline_box->text = talloc_strdup(html->bctx, "");
|
|
|
|
box_add_child(inline_container, inline_box);
|
|
box_add_child(box, inline_container);
|
|
|
|
return box_textarea_create_textarea(html, box, node);
|
|
}
|
|
|
|
|
|
/**
|
|
* Form control [17.4].
|
|
*/
|
|
|
|
bool box_input(BOX_SPECIAL_PARAMS)
|
|
{
|
|
struct form_control *gadget;
|
|
dom_string *type = NULL;
|
|
dom_exception err;
|
|
nsurl *url;
|
|
nserror error;
|
|
|
|
gadget = html_forms_get_control_for_node(content->forms, n);
|
|
if (gadget == NULL) {
|
|
return false;
|
|
}
|
|
|
|
box->gadget = gadget;
|
|
box->flags |= IS_REPLACED;
|
|
gadget->box = box;
|
|
gadget->html = content;
|
|
|
|
/* get entry type */
|
|
err = dom_element_get_attribute(n, corestring_dom_type, &type);
|
|
if ((err != DOM_NO_ERR) || (type == NULL)) {
|
|
/* no type so "text" is assumed */
|
|
if (box_input_text(content, box, n) == false) {
|
|
return false;
|
|
}
|
|
*convert_children = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
if (dom_string_caseless_lwc_isequal(type, corestring_lwc_password)) {
|
|
if (box_input_text(content, box, n) == false)
|
|
goto no_memory;
|
|
|
|
} else if (dom_string_caseless_lwc_isequal(type, corestring_lwc_file)) {
|
|
box->type = BOX_INLINE_BLOCK;
|
|
|
|
} else if (dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_hidden)) {
|
|
/* no box for hidden inputs */
|
|
box->type = BOX_NONE;
|
|
|
|
} else if ((dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_checkbox) ||
|
|
dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_radio))) {
|
|
|
|
} else if (dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_submit) ||
|
|
dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_reset) ||
|
|
dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_button)) {
|
|
struct box *inline_container, *inline_box;
|
|
|
|
if (box_button(n, content, box, 0) == false)
|
|
goto no_memory;
|
|
|
|
inline_container = box_create(NULL, 0, false, 0, 0, 0, 0,
|
|
content->bctx);
|
|
if (inline_container == NULL)
|
|
goto no_memory;
|
|
|
|
inline_container->type = BOX_INLINE_CONTAINER;
|
|
|
|
inline_box = box_create(NULL, box->style, false, 0, 0,
|
|
box->title, 0, content->bctx);
|
|
if (inline_box == NULL)
|
|
goto no_memory;
|
|
|
|
inline_box->type = BOX_TEXT;
|
|
|
|
if (box->gadget->value != NULL)
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
box->gadget->value);
|
|
else if (box->gadget->type == GADGET_SUBMIT)
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
messages_get("Form_Submit"));
|
|
else if (box->gadget->type == GADGET_RESET)
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
messages_get("Form_Reset"));
|
|
else
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
"Button");
|
|
|
|
if (inline_box->text == NULL)
|
|
goto no_memory;
|
|
|
|
inline_box->length = strlen(inline_box->text);
|
|
|
|
box_add_child(inline_container, inline_box);
|
|
|
|
box_add_child(box, inline_container);
|
|
|
|
} else if (dom_string_caseless_lwc_isequal(type,
|
|
corestring_lwc_image)) {
|
|
gadget->type = GADGET_IMAGE;
|
|
|
|
if (box->style &&
|
|
ns_computed_display(box->style,
|
|
box_is_root(n)) != CSS_DISPLAY_NONE &&
|
|
nsoption_bool(foreground_images) == true) {
|
|
dom_string *s;
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_src, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
error = nsurl_join(content->base_url,
|
|
dom_string_data(s), &url);
|
|
dom_string_unref(s);
|
|
if (error != NSERROR_OK)
|
|
goto no_memory;
|
|
|
|
/* if url is equivalent to the parent's url,
|
|
* we've got infinite inclusion. stop it here
|
|
*/
|
|
if (nsurl_compare(url, content->base_url,
|
|
NSURL_COMPLETE) == false) {
|
|
if (!html_fetch_object(content, url,
|
|
box, image_types,
|
|
content->base.
|
|
available_width,
|
|
1000, false)) {
|
|
nsurl_unref(url);
|
|
goto no_memory;
|
|
}
|
|
}
|
|
nsurl_unref(url);
|
|
}
|
|
}
|
|
} else {
|
|
/* unhandled type the default is "text" */
|
|
if (box_input_text(content, box, n) == false)
|
|
goto no_memory;
|
|
}
|
|
|
|
dom_string_unref(type);
|
|
|
|
*convert_children = false;
|
|
|
|
return true;
|
|
|
|
no_memory:
|
|
dom_string_unref(type);
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Push button [17.5].
|
|
*/
|
|
|
|
bool box_button(BOX_SPECIAL_PARAMS)
|
|
{
|
|
struct form_control *gadget;
|
|
|
|
gadget = html_forms_get_control_for_node(content->forms, n);
|
|
if (!gadget)
|
|
return false;
|
|
|
|
gadget->html = content;
|
|
box->gadget = gadget;
|
|
box->flags |= IS_REPLACED;
|
|
gadget->box = box;
|
|
|
|
box->type = BOX_INLINE_BLOCK;
|
|
|
|
/* Just render the contents */
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Option selector [17.6].
|
|
*/
|
|
|
|
bool box_select(BOX_SPECIAL_PARAMS)
|
|
{
|
|
struct box *inline_container;
|
|
struct box *inline_box;
|
|
struct form_control *gadget;
|
|
dom_node *c, *c2;
|
|
dom_node *next, *next2;
|
|
dom_exception err;
|
|
|
|
gadget = html_forms_get_control_for_node(content->forms, n);
|
|
if (gadget == NULL)
|
|
return false;
|
|
|
|
gadget->html = content;
|
|
err = dom_node_get_first_child(n, &c);
|
|
if (err != DOM_NO_ERR) {
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
while (c != NULL) {
|
|
dom_string *name;
|
|
|
|
err = dom_node_get_node_name(c, &name);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
if (dom_string_caseless_lwc_isequal(name,
|
|
corestring_lwc_option)) {
|
|
dom_string_unref(name);
|
|
|
|
if (box_select_add_option(gadget, c) == false) {
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
} else if (dom_string_caseless_lwc_isequal(name,
|
|
corestring_lwc_optgroup)) {
|
|
dom_string_unref(name);
|
|
|
|
err = dom_node_get_first_child(c, &c2);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
while (c2 != NULL) {
|
|
dom_string *c2_name;
|
|
|
|
err = dom_node_get_node_name(c2, &c2_name);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c2);
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
if (dom_string_caseless_lwc_isequal(c2_name,
|
|
corestring_lwc_option)) {
|
|
dom_string_unref(c2_name);
|
|
|
|
if (box_select_add_option(gadget,
|
|
c2) == false) {
|
|
dom_node_unref(c2);
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
} else {
|
|
dom_string_unref(c2_name);
|
|
}
|
|
|
|
err = dom_node_get_next_sibling(c2, &next2);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c2);
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
dom_node_unref(c2);
|
|
c2 = next2;
|
|
}
|
|
} else {
|
|
dom_string_unref(name);
|
|
}
|
|
|
|
err = dom_node_get_next_sibling(c, &next);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_node_unref(c);
|
|
form_free_control(gadget);
|
|
return false;
|
|
}
|
|
|
|
dom_node_unref(c);
|
|
c = next;
|
|
}
|
|
|
|
if (gadget->data.select.num_items == 0) {
|
|
/* no options: ignore entire select */
|
|
form_free_control(gadget);
|
|
return true;
|
|
}
|
|
|
|
box->type = BOX_INLINE_BLOCK;
|
|
box->gadget = gadget;
|
|
box->flags |= IS_REPLACED;
|
|
gadget->box = box;
|
|
|
|
inline_container = box_create(NULL, 0, false, 0, 0, 0, 0, content->bctx);
|
|
if (inline_container == NULL)
|
|
goto no_memory;
|
|
inline_container->type = BOX_INLINE_CONTAINER;
|
|
inline_box = box_create(NULL, box->style, false, 0, 0, box->title, 0,
|
|
content->bctx);
|
|
if (inline_box == NULL)
|
|
goto no_memory;
|
|
inline_box->type = BOX_TEXT;
|
|
box_add_child(inline_container, inline_box);
|
|
box_add_child(box, inline_container);
|
|
|
|
if (gadget->data.select.multiple == false &&
|
|
gadget->data.select.num_selected == 0) {
|
|
gadget->data.select.current = gadget->data.select.items;
|
|
gadget->data.select.current->initial_selected =
|
|
gadget->data.select.current->selected = true;
|
|
gadget->data.select.num_selected = 1;
|
|
dom_html_option_element_set_selected(
|
|
gadget->data.select.current->node, true);
|
|
}
|
|
|
|
if (gadget->data.select.num_selected == 0)
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
messages_get("Form_None"));
|
|
else if (gadget->data.select.num_selected == 1)
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
gadget->data.select.current->text);
|
|
else
|
|
inline_box->text = talloc_strdup(content->bctx,
|
|
messages_get("Form_Many"));
|
|
if (inline_box->text == NULL)
|
|
goto no_memory;
|
|
|
|
inline_box->length = strlen(inline_box->text);
|
|
|
|
*convert_children = false;
|
|
return true;
|
|
|
|
no_memory:
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Add an option to a form select control (helper function for box_select()).
|
|
*
|
|
* \param control select containing the <option>
|
|
* \param n xml element node for <option>
|
|
* \return true on success, false on memory exhaustion
|
|
*/
|
|
|
|
bool box_select_add_option(struct form_control *control, dom_node *n)
|
|
{
|
|
char *value = NULL;
|
|
char *text = NULL;
|
|
char *text_nowrap = NULL;
|
|
bool selected;
|
|
dom_string *content, *s;
|
|
dom_exception err;
|
|
|
|
err = dom_node_get_text_content(n, &content);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
if (content != NULL) {
|
|
text = squash_whitespace(dom_string_data(content));
|
|
dom_string_unref(content);
|
|
} else {
|
|
text = strdup("");
|
|
}
|
|
|
|
if (text == NULL)
|
|
goto no_memory;
|
|
|
|
err = dom_element_get_attribute(n, corestring_dom_value, &s);
|
|
if (err == DOM_NO_ERR && s != NULL) {
|
|
value = strdup(dom_string_data(s));
|
|
dom_string_unref(s);
|
|
} else {
|
|
value = strdup(text);
|
|
}
|
|
|
|
if (value == NULL)
|
|
goto no_memory;
|
|
|
|
dom_element_has_attribute(n, corestring_dom_selected, &selected);
|
|
|
|
/* replace spaces/TABs with hard spaces to prevent line wrapping */
|
|
text_nowrap = cnv_space2nbsp(text);
|
|
if (text_nowrap == NULL)
|
|
goto no_memory;
|
|
|
|
if (form_add_option(control, value, text_nowrap, selected, n) == false)
|
|
goto no_memory;
|
|
|
|
free(text);
|
|
|
|
return true;
|
|
|
|
no_memory:
|
|
free(value);
|
|
free(text);
|
|
free(text_nowrap);
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Multi-line text field [17.7].
|
|
*/
|
|
|
|
bool box_textarea(BOX_SPECIAL_PARAMS)
|
|
{
|
|
/* Get the form_control for the DOM node */
|
|
box->gadget = html_forms_get_control_for_node(content->forms, n);
|
|
if (box->gadget == NULL)
|
|
return false;
|
|
|
|
box->flags |= IS_REPLACED;
|
|
box->gadget->html = content;
|
|
box->gadget->box = box;
|
|
|
|
if (!box_input_text(content, box, n))
|
|
return false;
|
|
|
|
*convert_children = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Embedded object (not in any HTML specification:
|
|
* see http://wp.netscape.com/assist/net_sites/new_html3_prop.html )
|
|
*/
|
|
|
|
bool box_embed(BOX_SPECIAL_PARAMS)
|
|
{
|
|
struct object_params *params;
|
|
struct object_param *param;
|
|
dom_namednodemap *attrs;
|
|
unsigned long idx;
|
|
uint32_t num_attrs;
|
|
dom_string *src;
|
|
dom_exception err;
|
|
|
|
if (box->style && ns_computed_display(box->style,
|
|
box_is_root(n)) == CSS_DISPLAY_NONE)
|
|
return true;
|
|
|
|
params = talloc(content->bctx, struct object_params);
|
|
if (params == NULL)
|
|
return false;
|
|
|
|
talloc_set_destructor(params, box_object_talloc_destructor);
|
|
|
|
params->data = NULL;
|
|
params->type = NULL;
|
|
params->codetype = NULL;
|
|
params->codebase = NULL;
|
|
params->classid = NULL;
|
|
params->params = NULL;
|
|
|
|
/* src is a URL */
|
|
err = dom_element_get_attribute(n, corestring_dom_src, &src);
|
|
if (err != DOM_NO_ERR || src == NULL)
|
|
return true;
|
|
if (box_extract_link(content, src, content->base_url,
|
|
¶ms->data) == false) {
|
|
dom_string_unref(src);
|
|
return false;
|
|
}
|
|
|
|
dom_string_unref(src);
|
|
|
|
if (params->data == NULL)
|
|
return true;
|
|
|
|
/* Don't include ourself */
|
|
if (nsurl_compare(content->base_url, params->data, NSURL_COMPLETE))
|
|
return true;
|
|
|
|
/* add attributes as parameters to linked list */
|
|
err = dom_node_get_attributes(n, &attrs);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
err = dom_namednodemap_get_length(attrs, &num_attrs);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
for (idx = 0; idx < num_attrs; idx++) {
|
|
dom_attr *attr;
|
|
dom_string *name, *value;
|
|
|
|
err = dom_namednodemap_item(attrs, idx, (void *) &attr);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
err = dom_attr_get_name(attr, &name);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
if (dom_string_caseless_lwc_isequal(name, corestring_lwc_src)) {
|
|
dom_string_unref(name);
|
|
continue;
|
|
}
|
|
|
|
err = dom_attr_get_value(attr, &value);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_string_unref(name);
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
param = talloc(content->bctx, struct object_param);
|
|
if (param == NULL) {
|
|
dom_string_unref(value);
|
|
dom_string_unref(name);
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
param->name = talloc_strdup(content->bctx, dom_string_data(name));
|
|
param->value = talloc_strdup(content->bctx, dom_string_data(value));
|
|
param->type = NULL;
|
|
param->valuetype = talloc_strdup(content->bctx, "data");
|
|
param->next = NULL;
|
|
|
|
dom_string_unref(value);
|
|
dom_string_unref(name);
|
|
|
|
if (param->name == NULL || param->value == NULL ||
|
|
param->valuetype == NULL) {
|
|
dom_namednodemap_unref(attrs);
|
|
return false;
|
|
}
|
|
|
|
param->next = params->params;
|
|
params->params = param;
|
|
}
|
|
|
|
dom_namednodemap_unref(attrs);
|
|
|
|
box->object_params = params;
|
|
|
|
/* start fetch */
|
|
box->flags |= IS_REPLACED;
|
|
return html_fetch_object(content, params->data, box, CONTENT_ANY,
|
|
content->base.available_width, 1000, false);
|
|
}
|
|
|
|
/**
|
|
* \}
|
|
*/
|
|
|
|
|
|
/**
|
|
* Get the value of an XML element's attribute.
|
|
*
|
|
* \param n xmlNode, of type XML_ELEMENT_NODE
|
|
* \param attribute name of attribute
|
|
* \param context talloc context for result buffer
|
|
* \param value updated to value, if the attribute is present
|
|
* \return true on success, false if attribute present but memory exhausted
|
|
*
|
|
* Note that returning true does not imply that the attribute was found. If the
|
|
* attribute was not found, *value will be unchanged.
|
|
*/
|
|
|
|
bool box_get_attribute(dom_node *n, const char *attribute,
|
|
void *context, char **value)
|
|
{
|
|
char *result;
|
|
dom_string *attr, *attr_name;
|
|
dom_exception err;
|
|
|
|
err = dom_string_create_interned((const uint8_t *) attribute,
|
|
strlen(attribute), &attr_name);
|
|
if (err != DOM_NO_ERR)
|
|
return false;
|
|
|
|
err = dom_element_get_attribute(n, attr_name, &attr);
|
|
if (err != DOM_NO_ERR) {
|
|
dom_string_unref(attr_name);
|
|
return false;
|
|
}
|
|
|
|
dom_string_unref(attr_name);
|
|
|
|
if (attr != NULL) {
|
|
result = talloc_strdup(context, dom_string_data(attr));
|
|
|
|
dom_string_unref(attr);
|
|
|
|
if (result == NULL)
|
|
return false;
|
|
|
|
*value = result;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/* exported function documented in html/box.h */
|
|
bool
|
|
box_extract_link(const html_content *content,
|
|
const dom_string *dsrel,
|
|
nsurl *base,
|
|
nsurl **result)
|
|
{
|
|
char *s, *s1, *apos0 = 0, *apos1 = 0, *quot0 = 0, *quot1 = 0;
|
|
unsigned int i, j, end;
|
|
nserror error;
|
|
const char *rel;
|
|
|
|
rel = dom_string_data(dsrel);
|
|
|
|
s1 = s = malloc(3 * strlen(rel) + 1);
|
|
if (!s)
|
|
return false;
|
|
|
|
/* copy to s, removing white space and control characters */
|
|
for (i = 0; rel[i] && ascii_is_space(rel[i]); i++)
|
|
;
|
|
for (end = strlen(rel);
|
|
(end != i) && ascii_is_space(rel[end - 1]);
|
|
end--)
|
|
;
|
|
for (j = 0; i != end; i++) {
|
|
if ((unsigned char) rel[i] < 0x20) {
|
|
; /* skip control characters */
|
|
} else if (rel[i] == ' ') {
|
|
s[j++] = '%';
|
|
s[j++] = '2';
|
|
s[j++] = '0';
|
|
} else {
|
|
s[j++] = rel[i];
|
|
}
|
|
}
|
|
s[j] = 0;
|
|
|
|
if (content->enable_scripting == false) {
|
|
/* extract first quoted string out of "javascript:" link */
|
|
if (strncmp(s, "javascript:", 11) == 0) {
|
|
apos0 = strchr(s, '\'');
|
|
if (apos0)
|
|
apos1 = strchr(apos0 + 1, '\'');
|
|
quot0 = strchr(s, '"');
|
|
if (quot0)
|
|
quot1 = strchr(quot0 + 1, '"');
|
|
if (apos0 && apos1 &&
|
|
(!quot0 || !quot1 || apos0 < quot0)) {
|
|
*apos1 = 0;
|
|
s1 = apos0 + 1;
|
|
} else if (quot0 && quot1) {
|
|
*quot1 = 0;
|
|
s1 = quot0 + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* construct absolute URL */
|
|
error = nsurl_join(base, s1, result);
|
|
free(s);
|
|
if (error != NSERROR_OK) {
|
|
*result = NULL;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|