添加广播MDNS服务

FactoryTestTool/ThirdParty/qmdnsengine-master/examples/browser/servicemodel.cpp

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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Nathan Osman
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "servicemodel.h"
+
+Q_DECLARE_METATYPE(QMdnsEngine::Service)
+
+ServiceModel::ServiceModel(QMdnsEngine::Server *server, const QByteArray &type)
+    : mBrowser(server, type, &cache)
+{
+    connect(&mBrowser, &QMdnsEngine::Browser::serviceAdded, this, &ServiceModel::onServiceAdded);
+    connect(&mBrowser, &QMdnsEngine::Browser::serviceUpdated, this, &ServiceModel::onServiceUpdated);
+    connect(&mBrowser, &QMdnsEngine::Browser::serviceRemoved, this, &ServiceModel::onServiceRemoved);
+}
+
+int ServiceModel::rowCount(const QModelIndex &) const
+{
+    return mServices.count();
+}
+
+QVariant ServiceModel::data(const QModelIndex &index, int role) const
+{
+    // Ensure the index points to a valid row
+    if (!index.isValid() || index.row() < 0 || index.row() >= mServices.count()) {
+        return QVariant();
+    }
+
+    QMdnsEngine::Service service = mServices.at(index.row());
+
+    switch (role) {
+    case Qt::DisplayRole:
+        return QString("%1 (%2)")
+            .arg(QString(service.name()))
+            .arg(QString(service.type()));
+    case Qt::UserRole:
+        return QVariant::fromValue(service);
+    }
+
+    return QVariant();
+}
+
+void ServiceModel::onServiceAdded(const QMdnsEngine::Service &service)
+{
+    beginInsertRows(QModelIndex(), mServices.count(), mServices.count());
+    mServices.append(service);
+    endInsertRows();
+}
+
+void ServiceModel::onServiceUpdated(const QMdnsEngine::Service &service)
+{
+    int i = findService(service.name());
+    if (i != -1) {
+        mServices.replace(i, service);
+        emit dataChanged(index(i), index(i));
+    }
+}
+
+void ServiceModel::onServiceRemoved(const QMdnsEngine::Service &service)
+{
+    int i = findService(service.name());
+    if (i != -1) {
+        beginRemoveRows(QModelIndex(), i, i);
+        mServices.removeAt(i);
+        endRemoveRows();
+    }
+}
+
+int ServiceModel::findService(const QByteArray &name)
+{
+    for (auto i = mServices.constBegin(); i != mServices.constEnd(); ++i) {
+        if ((*i).name() == name) {
+            return i - mServices.constBegin();
+        }
+    }
+    return -1;
+}