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LibWeb: Move window.open TokenizedFeature parsing into its own file

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Andrew Kaster 2024-05-27 15:54:11 -06:00 • committed by Tim Flynn
commit e2d50dc5dd
Notes: sideshowbarker 2024-07-16 23:55:09 +09:00
5 changed files with 216 additions and 177 deletions
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1
Meta/gn/secondary/Userland/Libraries/LibWeb/HTML/BUILD.gn
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@ -163,6 +163,7 @@ source_set("HTML") {
"TimeRanges.cpp", "TimeRanges.cpp",
"Timer.cpp", "Timer.cpp",
"ToggleEvent.cpp", "ToggleEvent.cpp",
"TokenizedFeatures.cpp",
"TrackEvent.cpp", "TrackEvent.cpp",
"TraversableNavigable.cpp", "TraversableNavigable.cpp",
"UserActivation.cpp", "UserActivation.cpp",

1
Userland/Libraries/LibWeb/CMakeLists.txt
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@ -430,6 +430,7 @@ set(SOURCES
HTML/Timer.cpp HTML/Timer.cpp
HTML/TimeRanges.cpp HTML/TimeRanges.cpp
HTML/ToggleEvent.cpp HTML/ToggleEvent.cpp
HTML/TokenizedFeatures.cpp
HTML/TrackEvent.cpp HTML/TrackEvent.cpp
HTML/TraversableNavigable.cpp HTML/TraversableNavigable.cpp
HTML/UserActivation.cpp HTML/UserActivation.cpp

199
Userland/Libraries/LibWeb/HTML/TokenizedFeatures.cpp Normal file
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@ -0,0 +1,199 @@
/*
* Copyright (c) 2024, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/GenericLexer.h>
#include <LibWeb/HTML/TokenizedFeatures.h>
#include <LibWeb/Infra/CharacterTypes.h>
namespace Web::HTML {
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#normalizing-the-feature-name
static String normalize_feature_name(String const& name)
{
// For legacy reasons, there are some aliases of some feature names. To normalize a feature name name, switch on name:
// "screenx"
if (name == "screenx"sv) {
// Return "left".
return "left"_string;
}
// "screeny"
else if (name == "screeny"sv) {
// Return "top".
return "top"_string;
}
// "innerwidth"
else if (name == "innerwidth"sv) {
// Return "width".
return "width"_string;
}
// "innerheight"
else if (name == "innerheight") {
// Return "height".
return "height"_string;
}
// Anything else
else {
// Return name.
return name;
}
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-window-open-features-tokenize
TokenizedFeature::Map tokenize_open_features(StringView features)
{
// 1. Let tokenizedFeatures be a new ordered map.
TokenizedFeature::Map tokenized_features;
// 2. Let position point at the first code point of features.
GenericLexer lexer(features);
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#feature-separator
auto is_feature_separator = [](auto character) {
return Infra::is_ascii_whitespace(character) || character == '=' || character == ',';
};
// 3. While position is not past the end of features:
while (!lexer.is_eof()) {
// 1. Let name be the empty string.
String name;
// 2. Let value be the empty string.
String value;
// 3. Collect a sequence of code points that are feature separators from features given position. This skips past leading separators before the name.
lexer.ignore_while(is_feature_separator);
// 4. Collect a sequence of code points that are not feature separators from features given position. Set name to the collected characters, converted to ASCII lowercase.
name = MUST(String::from_byte_string(lexer.consume_until(is_feature_separator).to_lowercase_string()));
// 5. Set name to the result of normalizing the feature name name.
name = normalize_feature_name(name);
// 6. While position is not past the end of features and the code point at position in features is not U+003D (=):
// 1. If the code point at position in features is U+002C (,), or if it is not a feature separator, then break.
// 2. Advance position by 1.
lexer.ignore_while(Infra::is_ascii_whitespace);
// 7. If the code point at position in features is a feature separator:
// 1. While position is not past the end of features and the code point at position in features is a feature separator:
// 1. If the code point at position in features is U+002C (,), then break.
// 2. Advance position by 1.
lexer.ignore_while([](auto character) { return Infra::is_ascii_whitespace(character) || character == '='; });
// 2. Collect a sequence of code points that are not feature separators code points from features given position. Set value to the collected code points, converted to ASCII lowercase.
value = MUST(String::from_byte_string(lexer.consume_until(is_feature_separator).to_lowercase_string()));
// 8. If name is not the empty string, then set tokenizedFeatures[name] to value.
if (!name.is_empty())
tokenized_features.set(move(name), move(value));
}
// 4. Return tokenizedFeatures.
return tokenized_features;
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-window-open-features-parse-boolean
template<Enum T>
T parse_boolean_feature(StringView value)
{
// 1. If value is the empty string, then return true.
if (value.is_empty())
return T::Yes;
// 2. If value is "yes", then return true.
if (value == "yes"sv)
return T::Yes;
// 3. If value is "true", then return true.
if (value == "true"sv)
return T::Yes;
// 4. Let parsed be the result of parsing value as an integer.
auto parsed = value.to_number<i64>();
// 5. If parsed is an error, then set it to 0.
if (!parsed.has_value())
parsed = 0;
// 6. Return false if parsed is 0, and true otherwise.
return parsed == 0 ? T::No : T::Yes;
}
template TokenizedFeature::Location parse_boolean_feature<TokenizedFeature::Location>(StringView value);
template TokenizedFeature::Menubar parse_boolean_feature<TokenizedFeature::Menubar>(StringView value);
template TokenizedFeature::NoOpener parse_boolean_feature<TokenizedFeature::NoOpener>(StringView value);
template TokenizedFeature::NoReferrer parse_boolean_feature<TokenizedFeature::NoReferrer>(StringView value);
template TokenizedFeature::Popup parse_boolean_feature<TokenizedFeature::Popup>(StringView value);
template TokenizedFeature::Resizable parse_boolean_feature<TokenizedFeature::Resizable>(StringView value);
template TokenizedFeature::Scrollbars parse_boolean_feature<TokenizedFeature::Scrollbars>(StringView value);
template TokenizedFeature::Status parse_boolean_feature<TokenizedFeature::Status>(StringView value);
template TokenizedFeature::Toolbar parse_boolean_feature<TokenizedFeature::Toolbar>(StringView value);
// https://html.spec.whatwg.org/multipage/window-object.html#popup-window-is-requested
TokenizedFeature::Popup check_if_a_popup_window_is_requested(TokenizedFeature::Map const& tokenized_features)
{
// 1. If tokenizedFeatures is empty, then return false.
if (tokenized_features.is_empty())
return TokenizedFeature::Popup::No;
// 2. If tokenizedFeatures["popup"] exists, then return the result of parsing tokenizedFeatures["popup"] as a boolean feature.
if (auto popup_feature = tokenized_features.get("popup"sv); popup_feature.has_value())
return parse_boolean_feature<TokenizedFeature::Popup>(*popup_feature);
// https://html.spec.whatwg.org/multipage/window-object.html#window-feature-is-set
auto check_if_a_window_feature_is_set = [&]<Enum T>(StringView feature_name, T default_value) {
// 1. If tokenizedFeatures[featureName] exists, then return the result of parsing tokenizedFeatures[featureName] as a boolean feature.
if (auto feature = tokenized_features.get(feature_name); feature.has_value())
return parse_boolean_feature<T>(*feature);
// 2. Return defaultValue.
return default_value;
};
// 3. Let location be the result of checking if a window feature is set, given tokenizedFeatures, "location", and false.
auto location = check_if_a_window_feature_is_set("location"sv, TokenizedFeature::Location::No);
// 4. Let toolbar be the result of checking if a window feature is set, given tokenizedFeatures, "toolbar", and false.
auto toolbar = check_if_a_window_feature_is_set("toolbar"sv, TokenizedFeature::Toolbar::No);
// 5. If location and toolbar are both false, then return true.
if (location == TokenizedFeature::Location::No && toolbar == TokenizedFeature::Toolbar::No)
return TokenizedFeature::Popup::Yes;
// 6. Let menubar be the result of checking if a window feature is set, given tokenizedFeatures, menubar", and false.
auto menubar = check_if_a_window_feature_is_set("menubar"sv, TokenizedFeature::Menubar::No);
// 7. If menubar is false, then return true.
if (menubar == TokenizedFeature::Menubar::No)
return TokenizedFeature::Popup::Yes;
// 8. Let resizable be the result of checking if a window feature is set, given tokenizedFeatures, "resizable", and true.
auto resizable = check_if_a_window_feature_is_set("resizable"sv, TokenizedFeature::Resizable::Yes);
// 9. If resizable is false, then return true.
if (resizable == TokenizedFeature::Resizable::No)
return TokenizedFeature::Popup::Yes;
// 10. Let scrollbars be the result of checking if a window feature is set, given tokenizedFeatures, "scrollbars", and false.
auto scrollbars = check_if_a_window_feature_is_set("scrollbars"sv, TokenizedFeature::Scrollbars::No);
// 11. If scrollbars is false, then return true.
if (scrollbars == TokenizedFeature::Scrollbars::No)
return TokenizedFeature::Popup::Yes;
// 12. Let status be the result of checking if a window feature is set, given tokenizedFeatures, "status", and false.
auto status = check_if_a_window_feature_is_set("status"sv, TokenizedFeature::Status::No);
// 13. If status is false, then return true.
if (status == TokenizedFeature::Status::No)
return TokenizedFeature::Popup::Yes;
// 14. Return false.
return TokenizedFeature::Popup::No;
}
}

15
Userland/Libraries/LibWeb/HTML/TokenizedFeatures.h
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@ -6,6 +6,9 @@
#pragma once #pragma once
#include <AK/HashMap.h>
#include <AK/String.h>
namespace Web::HTML::TokenizedFeature { namespace Web::HTML::TokenizedFeature {
#define TOKENIZED_FEATURE(Feature) \ #define TOKENIZED_FEATURE(Feature) \
@ -24,4 +27,16 @@ TOKENIZED_FEATURE(Scrollbars);
TOKENIZED_FEATURE(Status); TOKENIZED_FEATURE(Status);
TOKENIZED_FEATURE(Toolbar); TOKENIZED_FEATURE(Toolbar);
using Map = OrderedHashMap<String, String>;
}
namespace Web::HTML {
TokenizedFeature::Map tokenize_open_features(StringView features);
TokenizedFeature::Popup check_if_a_popup_window_is_requested(TokenizedFeature::Map const&);
template<Enum T>
T parse_boolean_feature(StringView value);
} }

177
Userland/Libraries/LibWeb/HTML/Window.cpp
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@ -7,7 +7,6 @@
*/ */
#include <AK/Base64.h> #include <AK/Base64.h>
#include <AK/GenericLexer.h>
#include <AK/Utf8View.h> #include <AK/Utf8View.h>
#include <LibIPC/File.h> #include <LibIPC/File.h>
#include <LibJS/Runtime/AbstractOperations.h> #include <LibJS/Runtime/AbstractOperations.h>
@ -140,182 +139,6 @@ void Window::finalize()
Window::~Window() = default; Window::~Window() = default;
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#normalizing-the-feature-name
static String normalize_feature_name(String const& name)
{
// For legacy reasons, there are some aliases of some feature names. To normalize a feature name name, switch on name:
// "screenx"
if (name == "screenx"sv) {
// Return "left".
return "left"_string;
}
// "screeny"
else if (name == "screeny"sv) {
// Return "top".
return "top"_string;
}
// "innerwidth"
else if (name == "innerwidth"sv) {
// Return "width".
return "width"_string;
}
// "innerheight"
else if (name == "innerheight") {
// Return "height".
return "height"_string;
}
// Anything else
else {
// Return name.
return name;
}
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-window-open-features-tokenize
static OrderedHashMap<String, String> tokenize_open_features(StringView features)
{
// 1. Let tokenizedFeatures be a new ordered map.
OrderedHashMap<String, String> tokenized_features;
// 2. Let position point at the first code point of features.
GenericLexer lexer(features);
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#feature-separator
auto is_feature_separator = [](auto character) {
return Infra::is_ascii_whitespace(character) || character == '=' || character == ',';
};
// 3. While position is not past the end of features:
while (!lexer.is_eof()) {
// 1. Let name be the empty string.
String name;
// 2. Let value be the empty string.
String value;
// 3. Collect a sequence of code points that are feature separators from features given position. This skips past leading separators before the name.
lexer.ignore_while(is_feature_separator);
// 4. Collect a sequence of code points that are not feature separators from features given position. Set name to the collected characters, converted to ASCII lowercase.
name = MUST(String::from_byte_string(lexer.consume_until(is_feature_separator).to_lowercase_string()));
// 5. Set name to the result of normalizing the feature name name.
name = normalize_feature_name(name);
// 6. While position is not past the end of features and the code point at position in features is not U+003D (=):
// 1. If the code point at position in features is U+002C (,), or if it is not a feature separator, then break.
// 2. Advance position by 1.
lexer.ignore_while(Infra::is_ascii_whitespace);
// 7. If the code point at position in features is a feature separator:
// 1. While position is not past the end of features and the code point at position in features is a feature separator:
// 1. If the code point at position in features is U+002C (,), then break.
// 2. Advance position by 1.
lexer.ignore_while([](auto character) { return Infra::is_ascii_whitespace(character) || character == '='; });
// 2. Collect a sequence of code points that are not feature separators code points from features given position. Set value to the collected code points, converted to ASCII lowercase.
value = MUST(String::from_byte_string(lexer.consume_until(is_feature_separator).to_lowercase_string()));
// 8. If name is not the empty string, then set tokenizedFeatures[name] to value.
if (!name.is_empty())
tokenized_features.set(move(name), move(value));
}
// 4. Return tokenizedFeatures.
return tokenized_features;
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-window-open-features-parse-boolean
template<Enum T>
static T parse_boolean_feature(StringView value)
{
// 1. If value is the empty string, then return true.
if (value.is_empty())
return T::Yes;
// 2. If value is "yes", then return true.
if (value == "yes"sv)
return T::Yes;
// 3. If value is "true", then return true.
if (value == "true"sv)
return T::Yes;
// 4. Let parsed be the result of parsing value as an integer.
auto parsed = value.to_number<i64>();
// 5. If parsed is an error, then set it to 0.
if (!parsed.has_value())
parsed = 0;
// 6. Return false if parsed is 0, and true otherwise.
return parsed == 0 ? T::No : T::Yes;
}
// https://html.spec.whatwg.org/multipage/window-object.html#popup-window-is-requested
static TokenizedFeature::Popup check_if_a_popup_window_is_requested(OrderedHashMap<String, String> const& tokenized_features)
{
// 1. If tokenizedFeatures is empty, then return false.
if (tokenized_features.is_empty())
return TokenizedFeature::Popup::No;
// 2. If tokenizedFeatures["popup"] exists, then return the result of parsing tokenizedFeatures["popup"] as a boolean feature.
if (auto popup_feature = tokenized_features.get("popup"sv); popup_feature.has_value())
return parse_boolean_feature<TokenizedFeature::Popup>(*popup_feature);
// https://html.spec.whatwg.org/multipage/window-object.html#window-feature-is-set
auto check_if_a_window_feature_is_set = [&]<Enum T>(StringView feature_name, T default_value) {
// 1. If tokenizedFeatures[featureName] exists, then return the result of parsing tokenizedFeatures[featureName] as a boolean feature.
if (auto feature = tokenized_features.get(feature_name); feature.has_value())
return parse_boolean_feature<T>(*feature);
// 2. Return defaultValue.
return default_value;
};
// 3. Let location be the result of checking if a window feature is set, given tokenizedFeatures, "location", and false.
auto location = check_if_a_window_feature_is_set("location"sv, TokenizedFeature::Location::No);
// 4. Let toolbar be the result of checking if a window feature is set, given tokenizedFeatures, "toolbar", and false.
auto toolbar = check_if_a_window_feature_is_set("toolbar"sv, TokenizedFeature::Toolbar::No);
// 5. If location and toolbar are both false, then return true.
if (location == TokenizedFeature::Location::No && toolbar == TokenizedFeature::Toolbar::No)
return TokenizedFeature::Popup::Yes;
// 6. Let menubar be the result of checking if a window feature is set, given tokenizedFeatures, menubar", and false.
auto menubar = check_if_a_window_feature_is_set("menubar"sv, TokenizedFeature::Menubar::No);
// 7. If menubar is false, then return true.
if (menubar == TokenizedFeature::Menubar::No)
return TokenizedFeature::Popup::Yes;
// 8. Let resizable be the result of checking if a window feature is set, given tokenizedFeatures, "resizable", and true.
auto resizable = check_if_a_window_feature_is_set("resizable"sv, TokenizedFeature::Resizable::Yes);
// 9. If resizable is false, then return true.
if (resizable == TokenizedFeature::Resizable::No)
return TokenizedFeature::Popup::Yes;
// 10. Let scrollbars be the result of checking if a window feature is set, given tokenizedFeatures, "scrollbars", and false.
auto scrollbars = check_if_a_window_feature_is_set("scrollbars"sv, TokenizedFeature::Scrollbars::No);
// 11. If scrollbars is false, then return true.
if (scrollbars == TokenizedFeature::Scrollbars::No)
return TokenizedFeature::Popup::Yes;
// 12. Let status be the result of checking if a window feature is set, given tokenizedFeatures, "status", and false.
auto status = check_if_a_window_feature_is_set("status"sv, TokenizedFeature::Status::No);
// 13. If status is false, then return true.
if (status == TokenizedFeature::Status::No)
return TokenizedFeature::Popup::Yes;
// 14. Return false.
return TokenizedFeature::Popup::No;
}
// https://html.spec.whatwg.org/multipage/window-object.html#window-open-steps // https://html.spec.whatwg.org/multipage/window-object.html#window-open-steps
WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, StringView target, StringView features) WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, StringView target, StringView features)
{ {