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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/accessibility/platform/inspect/ax_tree_formatter.h"
#include <ostream>
#include "base/check.h"
#include "base/strings/pattern.h"
#include "base/values.h"
namespace ui {
// AXTreeFormatter
// static
bool AXTreeFormatter::MatchesPropertyFilters(
const std::vector<AXPropertyFilter>& property_filters,
const std::string& text,
bool default_result) {
bool allow = default_result;
for (const auto& filter : property_filters) {
// Either
// 1) the line matches a filter pattern, for example, AXSubrole=* filter
// will match AXSubrole=AXTerm line or
// 2) a property on the line is exactly equal to the filter pattern, for
// example, AXSubrole filter will match AXSubrole=AXTerm line.
if (base::MatchPattern(text, filter.match_str) ||
(filter.match_str.length() > 0 &&
filter.match_str.find('=') == std::string::npos &&
filter.match_str[filter.match_str.length() - 1] != '*' &&
base::MatchPattern(text, filter.match_str + "=*"))) {
switch (filter.type) {
case AXPropertyFilter::ALLOW_EMPTY:
case AXPropertyFilter::SCRIPT:
allow = true;
break;
case AXPropertyFilter::ALLOW:
allow = (!base::MatchPattern(text, "*=''"));
break;
case AXPropertyFilter::DENY:
allow = false;
break;
}
}
}
return allow;
}
// static
bool AXTreeFormatter::MatchesNodeFilters(
const std::vector<AXNodeFilter>& node_filters,
const base::Value::Dict& dict) {
for (const auto& filter : node_filters) {
if (filter.property == "*") {
return true;
}
const std::string* value = dict.FindString(filter.property);
if (value && base::MatchPattern(*value, filter.pattern)) {
return true;
}
}
return false;
}
} // namespace ui
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