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#include "cru/ui/ThemeResourceDictionary.h"
#include "cru/base/io/CFileStream.h"
#include "cru/base/log/Logger.h"
#include "cru/xml/XmlNode.h"
#include "cru/xml/XmlParser.h"
namespace cru::ui {
std::unique_ptr<ThemeResourceDictionary> ThemeResourceDictionary::FromFile(
const String& file_path) {
io::CFileStream stream(file_path.ToUtf8().c_str(), "r");
auto xml_string = stream.ReadToEndAsUtf8String();
auto parser = xml::XmlParser(xml_string);
return std::make_unique<ThemeResourceDictionary>(parser.Parse(), false);
}
ThemeResourceDictionary::ThemeResourceDictionary(xml::XmlElementNode* xml_root,
bool clone) {
Expects(xml_root);
xml_root_.reset(clone ? xml_root->Clone()->AsElement() : xml_root);
UpdateResourceMap(xml_root_.get());
}
ThemeResourceDictionary::~ThemeResourceDictionary() = default;
void ThemeResourceDictionary::UpdateResourceMap(xml::XmlElementNode* xml_root) {
if (!xml_root->GetTag().CaseInsensitiveEqual(u"Theme")) {
throw Exception(u"Root tag of theme must be 'Theme'.");
}
for (auto child : xml_root->GetChildren()) {
if (child->IsElementNode()) {
auto c = child->AsElement();
if (c->GetTag().CaseInsensitiveEqual(u"Resource")) {
auto key_attr = c->GetOptionalAttributeValueCaseInsensitive(u"key");
if (!key_attr) {
throw Exception(u"'key' attribute is required for resource.");
}
if (c->GetChildElementCount() != 1) {
throw Exception(u"Resource must have only one child element.");
}
ResourceEntry entry;
entry.name = *key_attr;
entry.xml_node = c->GetFirstChildElement();
resource_map_[entry.name] = std::move(entry);
} else {
CRU_LOG_TAG_DEBUG("Ignore unknown element {} of theme.",
c->GetTag().ToUtf8());
}
} else {
CRU_LOG_TAG_DEBUG("Ignore text or comment node of theme.");
}
}
}
} // namespace cru::ui
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