447 lines
13 KiB
C++
447 lines
13 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "chat_helpers/message_field.h"
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#include "history/history_widget.h"
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#include "base/qthelp_regex.h"
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#include "window/window_controller.h"
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#include "mainwindow.h"
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#include "auth_session.h"
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#include "styles/style_history.h"
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namespace {
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constexpr auto kParseLinksTimeout = TimeMs(1000);
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// For mention tags save and validate userId, ignore tags for different userId.
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class FieldTagMimeProcessor : public Ui::InputField::TagMimeProcessor {
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public:
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QString mimeTagFromTag(const QString &tagId) override {
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return ConvertTagToMimeTag(tagId);
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}
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QString tagFromMimeTag(const QString &mimeTag) override {
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if (mimeTag.startsWith(qstr("mention://"))) {
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auto match = QRegularExpression(":(\\d+)$").match(mimeTag);
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if (!match.hasMatch()
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|| match.capturedRef(1).toInt() != Auth().userId()) {
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return QString();
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}
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return mimeTag.mid(0, mimeTag.size() - match.capturedLength());
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}
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return mimeTag;
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}
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};
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} // namespace
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QString ConvertTagToMimeTag(const QString &tagId) {
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if (tagId.startsWith(qstr("mention://"))) {
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return tagId + ':' + QString::number(Auth().userId());
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}
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return tagId;
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}
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EntitiesInText ConvertTextTagsToEntities(const TextWithTags::Tags &tags) {
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EntitiesInText result;
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if (tags.isEmpty()) {
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return result;
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}
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result.reserve(tags.size());
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auto mentionStart = qstr("mention://user.");
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for_const (auto &tag, tags) {
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if (tag.id.startsWith(mentionStart)) {
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if (auto match = qthelp::regex_match("^(\\d+\\.\\d+)(/|$)", tag.id.midRef(mentionStart.size()))) {
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result.push_back(EntityInText(EntityInTextMentionName, tag.offset, tag.length, match->captured(1)));
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}
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}
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}
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return result;
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}
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TextWithTags::Tags ConvertEntitiesToTextTags(const EntitiesInText &entities) {
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TextWithTags::Tags result;
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if (entities.isEmpty()) {
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return result;
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}
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result.reserve(entities.size());
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for_const (auto &entity, entities) {
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if (entity.type() == EntityInTextMentionName) {
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auto match = QRegularExpression("^(\\d+\\.\\d+)$").match(entity.data());
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if (match.hasMatch()) {
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result.push_back({ entity.offset(), entity.length(), qstr("mention://user.") + entity.data() });
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}
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}
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}
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return result;
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}
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std::unique_ptr<QMimeData> MimeDataFromTextWithEntities(
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const TextWithEntities &forClipboard) {
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if (forClipboard.text.isEmpty()) {
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return nullptr;
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}
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auto result = std::make_unique<QMimeData>();
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result->setText(forClipboard.text);
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auto tags = ConvertEntitiesToTextTags(forClipboard.entities);
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if (!tags.isEmpty()) {
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for (auto &tag : tags) {
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tag.id = ConvertTagToMimeTag(tag.id);
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}
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result->setData(
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TextUtilities::TagsMimeType(),
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TextUtilities::SerializeTags(tags));
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}
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return result;
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}
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void SetClipboardWithEntities(
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const TextWithEntities &forClipboard,
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QClipboard::Mode mode) {
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if (auto data = MimeDataFromTextWithEntities(forClipboard)) {
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QApplication::clipboard()->setMimeData(data.release(), mode);
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}
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}
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void InitMessageField(not_null<Ui::InputField*> field) {
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field->setMinHeight(st::historySendSize.height() - 2 * st::historySendPadding);
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field->setMaxHeight(st::historyComposeFieldMaxHeight);
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field->setTagMimeProcessor(std::make_unique<FieldTagMimeProcessor>());
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field->document()->setDocumentMargin(4.);
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const auto additional = convertScale(4) - 4;
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field->rawTextEdit()->setStyleSheet(
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qsl("QTextEdit { margin: %1px; }").arg(additional));
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field->setInstantReplaces(Ui::InstantReplaces::Default());
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field->enableInstantReplaces(Global::ReplaceEmoji());
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auto &changed = Global::RefReplaceEmojiChanged();
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Ui::AttachAsChild(field, changed.add_subscription([=] {
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field->enableInstantReplaces(Global::ReplaceEmoji());
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}));
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field->window()->activateWindow();
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}
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bool HasSendText(not_null<const Ui::InputField*> field) {
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const auto &text = field->getTextWithTags().text;
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for (const auto ch : text) {
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const auto code = ch.unicode();
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if (code != ' '
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&& code != '\n'
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&& code != '\r'
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&& !chReplacedBySpace(code)) {
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return true;
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}
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}
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return false;
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}
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InlineBotQuery ParseInlineBotQuery(not_null<const Ui::InputField*> field) {
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auto result = InlineBotQuery();
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const auto &text = field->getTextWithTags().text;
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const auto textLength = text.size();
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auto inlineUsernameStart = 1;
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auto inlineUsernameLength = 0;
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if (textLength > 2 && text[0] == '@' && text[1].isLetter()) {
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inlineUsernameLength = 1;
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for (auto i = inlineUsernameStart + 1; i != textLength; ++i) {
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const auto ch = text[i];
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if (ch.isLetterOrNumber() || ch.unicode() == '_') {
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++inlineUsernameLength;
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continue;
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} else if (!ch.isSpace()) {
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inlineUsernameLength = 0;
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}
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break;
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}
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auto inlineUsernameEnd = inlineUsernameStart + inlineUsernameLength;
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auto inlineUsernameEqualsText = (inlineUsernameEnd == textLength);
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auto validInlineUsername = false;
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if (inlineUsernameEqualsText) {
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validInlineUsername = text.endsWith(qstr("bot"));
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} else if (inlineUsernameEnd < textLength && inlineUsernameLength) {
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validInlineUsername = text[inlineUsernameEnd].isSpace();
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}
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if (validInlineUsername) {
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auto username = text.midRef(inlineUsernameStart, inlineUsernameLength);
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if (username != result.username) {
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result.username = username.toString();
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if (const auto peer = App::peerByName(result.username)) {
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if (const auto user = peer->asUser()) {
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result.bot = peer->asUser();
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} else {
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result.bot = nullptr;
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}
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result.lookingUpBot = false;
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} else {
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result.bot = nullptr;
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result.lookingUpBot = true;
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}
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}
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if (result.lookingUpBot) {
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result.query = QString();
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return result;
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} else if (result.bot && (!result.bot->botInfo
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|| result.bot->botInfo->inlinePlaceholder.isEmpty())) {
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result.bot = nullptr;
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} else {
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result.query = inlineUsernameEqualsText
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? QString()
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: text.mid(inlineUsernameEnd + 1);
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return result;
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}
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} else {
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inlineUsernameLength = 0;
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}
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}
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if (inlineUsernameLength < 3) {
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result.bot = nullptr;
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result.username = QString();
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}
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result.query = QString();
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return result;
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}
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AutocompleteQuery ParseMentionHashtagBotCommandQuery(
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not_null<const Ui::InputField*> field) {
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auto result = AutocompleteQuery();
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const auto cursor = field->textCursor();
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const auto position = cursor.position();
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if (cursor.anchor() != position) {
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return result;
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}
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const auto document = field->document();
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const auto block = document->findBlock(position);
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for (auto item = block.begin(); !item.atEnd(); ++item) {
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const auto fragment = item.fragment();
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if (!fragment.isValid()) {
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continue;
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}
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const auto fragmentPosition = fragment.position();
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const auto fragmentEnd = fragmentPosition + fragment.length();
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if (fragmentPosition >= position || fragmentEnd < position) {
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continue;
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}
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const auto format = fragment.charFormat();
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if (format.isImageFormat()) {
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continue;
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}
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bool mentionInCommand = false;
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const auto text = fragment.text();
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for (auto i = position - fragmentPosition; i != 0; --i) {
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if (text[i - 1] == '@') {
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if ((position - fragmentPosition - i < 1 || text[i].isLetter()) && (i < 2 || !(text[i - 2].isLetterOrNumber() || text[i - 2] == '_'))) {
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result.fromStart = (i == 1) && (fragmentPosition == 0);
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result.query = text.mid(i - 1, position - fragmentPosition - i + 1);
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} else if ((position - fragmentPosition - i < 1 || text[i].isLetter()) && i > 2 && (text[i - 2].isLetterOrNumber() || text[i - 2] == '_') && !mentionInCommand) {
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mentionInCommand = true;
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--i;
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continue;
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}
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return result;
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} else if (text[i - 1] == '#') {
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if (i < 2 || !(text[i - 2].isLetterOrNumber() || text[i - 2] == '_')) {
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result.fromStart = (i == 1) && (fragmentPosition == 0);
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result.query = text.mid(i - 1, position - fragmentPosition - i + 1);
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}
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return result;
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} else if (text[i - 1] == '/') {
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if (i < 2) {
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result.fromStart = (i == 1) && (fragmentPosition == 0);
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result.query = text.mid(i - 1, position - fragmentPosition - i + 1);
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}
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return result;
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}
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if (position - fragmentPosition - i > 127 || (!mentionInCommand && (position - fragmentPosition - i > 63))) {
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break;
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}
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if (!text[i - 1].isLetterOrNumber() && text[i - 1] != '_') {
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break;
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}
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}
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break;
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}
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return result;
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}
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QtConnectionOwner::QtConnectionOwner(QMetaObject::Connection connection)
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: _data(connection) {
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}
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QtConnectionOwner::QtConnectionOwner(QtConnectionOwner &&other)
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: _data(base::take(other._data)) {
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}
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QtConnectionOwner &QtConnectionOwner::operator=(QtConnectionOwner &&other) {
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disconnect();
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_data = base::take(other._data);
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return *this;
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}
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void QtConnectionOwner::disconnect() {
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QObject::disconnect(base::take(_data));
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}
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QtConnectionOwner::~QtConnectionOwner() {
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disconnect();
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}
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MessageLinksParser::MessageLinksParser(not_null<Ui::InputField*> field)
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: _field(field)
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, _timer([=] { parse(); }) {
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_connection = QObject::connect(_field, &Ui::InputField::changed, [=] {
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const auto length = _field->getTextWithTags().text.size();
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const auto timeout = (std::abs(length - _lastLength) > 2)
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? 0
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: kParseLinksTimeout;
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if (!_timer.isActive() || timeout < _timer.remainingTime()) {
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_timer.callOnce(timeout);
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}
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_lastLength = length;
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});
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_field->installEventFilter(this);
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}
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bool MessageLinksParser::eventFilter(QObject *object, QEvent *event) {
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if (object == _field) {
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if (event->type() == QEvent::KeyPress) {
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const auto text = static_cast<QKeyEvent*>(event)->text();
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if (!text.isEmpty() && text.size() < 3) {
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const auto ch = text[0];
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if (false
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|| ch == '\n'
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|| ch == '\r'
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|| ch.isSpace()
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|| ch == QChar::LineSeparator) {
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_timer.callOnce(0);
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}
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}
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} else if (event->type() == QEvent::Drop) {
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_timer.callOnce(0);
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}
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}
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return QObject::eventFilter(object, event);
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}
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const rpl::variable<QStringList> &MessageLinksParser::list() const {
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return _list;
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}
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void MessageLinksParser::parse() {
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const auto &text = _field->getTextWithTags().text;
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if (text.isEmpty()) {
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_list = QStringList();
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return;
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}
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auto ranges = QVector<LinkRange>();
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const auto len = text.size();
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const QChar *start = text.unicode(), *end = start + text.size();
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for (auto offset = 0, matchOffset = offset; offset < len;) {
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auto m = TextUtilities::RegExpDomain().match(text, matchOffset);
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if (!m.hasMatch()) break;
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auto domainOffset = m.capturedStart();
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auto protocol = m.captured(1).toLower();
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auto topDomain = m.captured(3).toLower();
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auto isProtocolValid = protocol.isEmpty() || TextUtilities::IsValidProtocol(protocol);
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auto isTopDomainValid = !protocol.isEmpty() || TextUtilities::IsValidTopDomain(topDomain);
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if (protocol.isEmpty() && domainOffset > offset + 1 && *(start + domainOffset - 1) == QChar('@')) {
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auto forMailName = text.mid(offset, domainOffset - offset - 1);
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auto mMailName = TextUtilities::RegExpMailNameAtEnd().match(forMailName);
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if (mMailName.hasMatch()) {
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offset = matchOffset = m.capturedEnd();
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continue;
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}
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}
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if (!isProtocolValid || !isTopDomainValid) {
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offset = matchOffset = m.capturedEnd();
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continue;
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}
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QStack<const QChar*> parenth;
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const QChar *domainEnd = start + m.capturedEnd(), *p = domainEnd;
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for (; p < end; ++p) {
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QChar ch(*p);
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if (chIsLinkEnd(ch)) break; // link finished
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if (chIsAlmostLinkEnd(ch)) {
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const QChar *endTest = p + 1;
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while (endTest < end && chIsAlmostLinkEnd(*endTest)) {
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++endTest;
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}
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if (endTest >= end || chIsLinkEnd(*endTest)) {
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break; // link finished at p
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}
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p = endTest;
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ch = *p;
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}
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if (ch == '(' || ch == '[' || ch == '{' || ch == '<') {
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parenth.push(p);
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} else if (ch == ')' || ch == ']' || ch == '}' || ch == '>') {
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if (parenth.isEmpty()) break;
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const QChar *q = parenth.pop(), open(*q);
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if ((ch == ')' && open != '(') || (ch == ']' && open != '[') || (ch == '}' && open != '{') || (ch == '>' && open != '<')) {
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p = q;
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break;
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}
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}
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}
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if (p > domainEnd) { // check, that domain ended
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if (domainEnd->unicode() != '/' && domainEnd->unicode() != '?') {
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matchOffset = domainEnd - start;
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continue;
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}
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}
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ranges.push_back({ domainOffset, static_cast<int>(p - start - domainOffset) });
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offset = matchOffset = p - start;
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}
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apply(text, ranges);
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}
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void MessageLinksParser::apply(
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const QString &text,
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const QVector<LinkRange> &ranges) {
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const auto count = int(ranges.size());
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const auto current = _list.current();
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const auto changed = [&] {
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if (current.size() != count) {
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return true;
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}
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for (auto i = 0; i != count; ++i) {
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const auto &range = ranges[i];
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if (text.midRef(range.start, range.length) != current[i]) {
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return true;
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}
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}
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return false;
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}();
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if (!changed) {
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return;
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}
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auto parsed = QStringList();
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parsed.reserve(count);
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for (const auto &range : ranges) {
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parsed.push_back(text.mid(range.start, range.length));
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}
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_list = std::move(parsed);
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}
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