feat(ui/modules/Linphone/Chat/FileMessage): file download is supported

tests/assets/languages/en.ts

@@ -311,6 +311,13 @@ Server url not configured.</translation>
         <translation>Missed outgoing call</translation>
     </message>
 </context>
+<context>
+    <name>FileMessage</name>
+    <message>
+        <source>downloadFileTitle</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
     <name>Home</name>
     <message>

tests/assets/languages/fr.ts

@@ -299,6 +299,13 @@ Url du serveur non configurée.</translation>
         <translation>Appel sortant sans réponse</translation>
     </message>
 </context>
+<context>
+    <name>FileMessage</name>
+    <message>
+        <source>downloadFileTitle</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
     <name>Home</name>
     <message>

tests/src/components/chat/ChatModel.cpp

 #include <algorithm>
 
 #include <QDateTime>
+#include <QFileDialog>
 #include <QFileInfo>
 #include <QImage>
 #include <QtDebug>
@@ -22,10 +23,36 @@ using namespace std;
 // =============================================================================
 
 inline void fillThumbnailProperty (QVariantMap &dest, const shared_ptr<linphone::ChatMessage> &message) {
-  string data = message->getAppdata();
-  if (!data.empty())
+  string file_id = message->getAppdata();
+  if (!file_id.empty() && !dest.contains("thumbnail"))
     dest["thumbnail"] = QStringLiteral("image://%1/%2")
-      .arg(ThumbnailProvider::PROVIDER_ID).arg(::Utils::linphoneStringToQString(data));
+      .arg(ThumbnailProvider::PROVIDER_ID).arg(::Utils::linphoneStringToQString(file_id));
+}
+
+inline void createThumbnail (const shared_ptr<linphone::ChatMessage> &message) {
+  if (!message->getAppdata().empty())
+    return;
+
+  QString thumbnail_path = ::Utils::linphoneStringToQString(message->getFileTransferFilepath());
+
+  QImage image(thumbnail_path);
+  if (image.isNull())
+    return;
+
+  QImage thumbnail = image.scaled(
+      THUMBNAIL_IMAGE_FILE_WIDTH, THUMBNAIL_IMAGE_FILE_HEIGHT,
+      Qt::KeepAspectRatio, Qt::SmoothTransformation
+    );
+
+  QString uuid = QUuid::createUuid().toString();
+  QString file_id = QStringLiteral("%1.jpg").arg(uuid.mid(1, uuid.length() - 2));
+
+  if (!thumbnail.save(::Utils::linphoneStringToQString(Paths::getThumbnailsDirPath()) + file_id, "jpg", 100)) {
+    qWarning() << QStringLiteral("Unable to create thumbnail of: `%1`.").arg(thumbnail_path);
+    return;
+  }
+
+  message->setAppdata(::Utils::qStringToLinphoneString(file_id));
 }
 
 inline void removeFileMessageThumbnail (const shared_ptr<linphone::ChatMessage> &message) {
@@ -112,24 +139,8 @@ private:
     if (state == linphone::ChatMessageStateFileTransferError)
       state = linphone::ChatMessageStateNotDelivered;
     else if (state == linphone::ChatMessageStateFileTransferDone) {
-      QString thumbnail_path = ::Utils::linphoneStringToQString(message->getFileTransferFilepath());
-
-      QImage image(thumbnail_path);
-      if (!image.isNull()) {
-        QImage thumbnail = image.scaled(
-            THUMBNAIL_IMAGE_FILE_WIDTH, THUMBNAIL_IMAGE_FILE_HEIGHT,
-            Qt::KeepAspectRatio, Qt::SmoothTransformation
-          );
-
-        QString uuid = QUuid::createUuid().toString();
-        QString file_id = QStringLiteral("%1.jpg").arg(uuid.mid(1, uuid.length() - 2));
-
-        if (!thumbnail.save(::Utils::linphoneStringToQString(Paths::getThumbnailsDirPath()) + file_id, "jpg", 100)) {
-          qWarning() << QStringLiteral("Unable to create thumbnail of: `%1`.").arg(thumbnail_path);
-          return;
-        }
-
-        message->setAppdata(::Utils::qStringToLinphoneString(file_id));
+      if (!message->isOutgoing()) {
+        createThumbnail(message);
         fillThumbnailProperty((*it).first, message);
       }
 
@@ -348,7 +359,8 @@ void ChatModel::resendMessage (int id) {
   }
 
   shared_ptr<linphone::ChatMessage> message = static_pointer_cast<linphone::ChatMessage>(entry.second);
-  if (message->getState() != linphone::ChatMessageStateNotDelivered) {
+  int state = message->getState();
+  if (state != linphone::ChatMessageStateNotDelivered && state != linphone::ChatMessageStateFileTransferError) {
     qWarning() << QStringLiteral("Unable to resend message: %1. Bad state.").arg(id);
     return;
   }
@@ -381,6 +393,45 @@ void ChatModel::sendFileMessage (const QString &path) {
   emit messageSent(message);
 }
 
+void ChatModel::downloadFile (int id, const QString &download_path) {
+  if (!m_chat_room)
+    return;
+
+  if (id < 0 || id > m_entries.count()) {
+    qWarning() << QStringLiteral("Entry %1 not exists.").arg(id);
+    return;
+  }
+
+  const ChatEntryData &entry = m_entries[id];
+  if (entry.first["type"] != EntryType::MessageEntry) {
+    qWarning() << QStringLiteral("Unable to download entry %1. It's not a message.").arg(id);
+    return;
+  }
+
+  shared_ptr<linphone::ChatMessage> message = static_pointer_cast<linphone::ChatMessage>(entry.second);
+  if (!message->getFileTransferInformation()) {
+    qWarning() << QStringLiteral("Entry %1 is not a file message.").arg(id);
+    return;
+  }
+
+  int state = message->getState();
+  if (state != linphone::ChatMessageStateDelivered && state != linphone::ChatMessageStateFileTransferDone) {
+    qWarning() << QStringLiteral("Unable to download file of entry %1. It was not uploaded.").arg(id);
+    return;
+  }
+
+  message->setFileTransferFilepath(
+    ::Utils::qStringToLinphoneString(download_path.startsWith("file://")
+      ? download_path.mid(sizeof("file://") - 1)
+      : download_path
+    )
+  );
+  message->setListener(m_message_handlers);
+
+  if (message->downloadFile() < 0)
+    qWarning() << QStringLiteral("Unable to download file of entry %1.").arg(id);
+}
+
 // -----------------------------------------------------------------------------
 
 void ChatModel::fillMessageEntry (QVariantMap &dest, const shared_ptr<linphone::ChatMessage> &message) {

tests/src/components/chat/ChatModel.hpp

@@ -70,6 +70,8 @@ public:
 
   void sendFileMessage (const QString &path);
 
+  void downloadFile (int id, const QString &download_path);
+
 signals:
   void sipAddressChanged (const QString &sip_address);
   void allEntriesRemoved ();

tests/src/components/chat/ChatProxyModel.cpp

@@ -109,6 +109,13 @@ void ChatProxyModel::sendFileMessage (const QString &path) {
   static_cast<ChatModel *>(m_chat_model_filter->sourceModel())->sendFileMessage(path);
 }
 
+void ChatProxyModel::downloadFile (int id, const QString &download_path) {
+  QModelIndex source_index = mapToSource(index(id, 0));
+  static_cast<ChatModel *>(m_chat_model_filter->sourceModel())->downloadFile(
+    m_chat_model_filter->mapToSource(source_index).row(), download_path
+  );
+}
+
 // -----------------------------------------------------------------------------
 
 bool ChatProxyModel::filterAcceptsRow (int source_row, const QModelIndex &) const {

tests/src/components/chat/ChatProxyModel.hpp

@@ -28,6 +28,8 @@ public:
 
   Q_INVOKABLE void sendFileMessage (const QString &path);
 
+  Q_INVOKABLE void downloadFile (int id, const QString &download_path);
+
 signals:
   void sipAddressChanged (const QString &sip_address);
   void moreEntriesLoaded (int n);

tests/ui/modules/Linphone/Chat/FileMessage.qml

 import QtQuick 2.7
 import QtQuick.Controls 2.0
+import QtQuick.Dialogs 1.2
 import QtQuick.Layouts 1.3
 
 import Common 1.0
@@ -47,6 +48,8 @@ Row {
     Rectangle {
       id: rectangle
 
+      readonly property bool isNotDelivered: $chatEntry.status === ChatModel.MessageStatusNotDelivered
+
       color: $chatEntry.isOutgoing
         ? ChatStyle.entry.message.outgoing.backgroundColor
         : ChatStyle.entry.message.incoming.backgroundColor
@@ -169,6 +172,27 @@ Row {
           }
         }
       }
+
+      MouseArea {
+        FileDialog {
+          id: fileDialog
+
+          folder: shortcuts.home
+          title: qsTr('downloadFileTitle')
+          selectExisting: false
+
+          onAccepted: proxyModel.downloadFile(index, fileUrl)
+        }
+
+        anchors.fill: parent
+        cursorShape: containsMouse
+          ? Qt.PointingHandCursor
+          : Qt.ArrowCursor
+        hoverEnabled: true
+
+        onClicked: fileDialog.open()
+        visible: !rectangle.isNotDelivered && !$chatEntry.isOutgoing
+      }
     }
 
     // -------------------------------------------------------------------------
@@ -182,10 +206,7 @@ Row {
         id: icon
 
         Icon {
-          readonly property bool isNotDelivered:
-            $chatEntry.status === ChatModel.MessageStatusNotDelivered
-
-          icon: isNotDelivered ? 'chat_error' : 'chat_send'
+          icon: rectangle.isNotDelivered ? 'chat_error' : 'chat_send'
           iconSize: ChatStyle.entry.message.outgoing.sendIconSize
 
           MouseArea {