download files error handling

ui/widgets/conversation.cpp

@@ -290,6 +290,11 @@ void Conversation::responseDownloadProgress(const QString& messageId, qreal prog
     line->responseDownloadProgress(messageId, progress);
 }
 
+void Conversation::downloadError(const QString& messageId, const QString& error)
+{
+    line->downloadError(messageId, error);
+}
+
 void Conversation::responseLocalFile(const QString& messageId, const QString& path)
 {
     line->responseLocalFile(messageId, path);

ui/widgets/conversation.h

@@ -72,6 +72,7 @@ public:
     void responseArchive(const std::list<Shared::Message> list);
     void showEvent(QShowEvent * event) override;
     void responseLocalFile(const QString& messageId, const QString& path);
+    void downloadError(const QString& messageId, const QString& error);
     void responseDownloadProgress(const QString& messageId, qreal progress);
     
 signals:

ui/widgets/message.cpp

@@ -38,10 +38,12 @@ Message::Message(const Shared::Message& source, bool outgoing, const QString& p_
     file(0),
     progress(0),
     fileComment(new QLabel()),
+    errorText(""),
     hasDownloadButton(false),
     hasProgress(false),
     hasFile(false),
-    commentAdded(false)
+    commentAdded(false),
+    errorDownloadingFile(false)
 {
     body->setBackgroundRole(QPalette::AlternateBase);
     body->setAutoFillBackground(true);
@@ -117,7 +119,12 @@ void Message::addDownloadDialog()
         }
         downloadButton = new QPushButton(QIcon::fromTheme("download"), "Download");
         downloadButton->setToolTip("<a href=\"" + msg.getOutOfBandUrl() + "\">" + msg.getOutOfBandUrl() + "</a>");
-        fileComment->setText(sender->text() + " is offering you to download a file");
+        if (errorDownloadingFile) {
+            fileComment->setWordWrap(true);
+            fileComment->setText("Error downloading file: " + errorText + "\nYou can try again");
+        } else {
+            fileComment->setText(sender->text() + " is offering you to download a file");
+        }
         fileComment->show();
         connect(downloadButton, SIGNAL(clicked()), this, SLOT(onDownload()));
         bodyLayout->insertWidget(2, fileComment);
@@ -208,6 +215,7 @@ void Message::hideDownload()
         downloadButton->deleteLater();
         downloadButton = 0;
         hasDownloadButton = false;
+        errorDownloadingFile = false;
     }
 }
 
@@ -228,3 +236,10 @@ void Message::hideProgress()
         hasProgress = false;;
     }
 }
+
+void Message::showError(const QString& error)
+{
+    errorDownloadingFile = true;
+    errorText = error;
+    addDownloadDialog();
+}

ui/widgets/message.h

@@ -49,6 +49,7 @@ public:
     
     void addDownloadDialog();
     void showFile(const QString& path);
+    void showError(const QString& error);
     void setProgress(qreal value);
     
 signals:
@@ -66,10 +67,12 @@ private:
     QLabel* file;
     QProgressBar* progress;
     QLabel* fileComment;
+    QString errorText;
     bool hasDownloadButton;
     bool hasProgress;
     bool hasFile;
     bool commentAdded;
+    bool errorDownloadingFile;
     
 private slots:
     void onDownload();

ui/widgets/messageline.cpp

@@ -246,3 +246,14 @@ void MessageLine::responseLocalFile(const QString& messageId, const QString& pat
         }
     }
 }
+
+void MessageLine::downloadError(const QString& messageId, const QString& error)
+{
+    Index::const_iterator itr = messageIndex.find(messageId);
+    if (itr == messageIndex.end()) {
+        
+    } else {
+        itr->second->showError(error);
+    }
+}
+

ui/widgets/messageline.h

@@ -53,6 +53,7 @@ public:
     void showBusyIndicator();
     void hideBusyIndicator();
     void responseLocalFile(const QString& messageId, const QString& path);
+    void downloadError(const QString& messageId, const QString& error);
     void responseDownloadProgress(const QString& messageId, qreal progress);
     
 signals: