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css: Add option to ignore author level CSS

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This adds a new config option, `author_level_css`.

When it is disabled, NetSurf will ignore all CSS from the web
page. In this case only the default CSS rules from the browser
and user CSS rules will be applied. It is enabled by default.

Tested by running:

    ./nsgtk3 --author_level_css=0
This commit is contained in:
Michael Drake 2023-11-25 20:02:23 +00:00
parent 41de6cb6f8
commit 4cb38c4704
4 changed files with 20 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
content/handlers/css/hints.c
View File

@ -1587,6 +1587,10 @@ static void css_hint_list(
dom_exception err;
dom_string *attr;
if (nsoption_bool(author_level_css) == false) {
return;
}
err = dom_element_get_attribute(node, corestring_dom_type, &attr);
if (err == DOM_NO_ERR && attr != NULL) {
const char *attr_str = dom_string_data(attr);

13
content/handlers/html/box_construct.c
View File

@ -249,16 +249,19 @@ box_get_style(html_content *c,
const css_computed_style *root_style,
dom_node *n)
{
dom_string *s;
dom_exception err;
dom_string *s = NULL;
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 (nsoption_bool(author_level_css)) {
dom_exception err;
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(

5
content/handlers/html/css.c
View File

@ -683,6 +683,11 @@ html_css_new_selection_context(html_content *c, css_select_ctx **ret_select_ctx)
origin = CSS_ORIGIN_USER;
}
if (origin == CSS_ORIGIN_AUTHOR &&
nsoption_bool(author_level_css) == false) {
continue;
}
if (hsheet->sheet != NULL) {
sheet = nscss_get_stylesheet(hsheet->sheet);
}

3
desktop/options.h
View File

@ -123,6 +123,9 @@ NSOPTION_BOOL(animate_images, true)
/** Whether to execute javascript */
NSOPTION_BOOL(enable_javascript, false)
/** Whether to allow Author level CSS. */
NSOPTION_BOOL(author_level_css, true)
/** Maximum time (in seconds) to wait for a script to run */
NSOPTION_INTEGER(script_timeout, 10)