Added option to stop and resume download

Author: gastoner

src/app/downloadmanager.cpp

@@ -137,6 +137,14 @@ void DownloadManager::cancel()
     }
 }
 
+void DownloadManager::stopDownload()
+{
+    if (m_current) {
+        m_current->deleteLater();
+        mDebug() << this->metaObject()->className() << "Stopping";
+    }
+}
+
 bool DownloadManager::isDownloaded(const QUrl &url) const
 {
     const QString filePath = QString("%1/%2").arg(DownloadManager::dir()).arg(url.fileName());

src/app/downloadmanager.h

@@ -163,6 +163,7 @@ class DownloadManager : public QObject, public DownloadReceiver
     QNetworkReply *tryAnotherMirror();
 
     Q_INVOKABLE void cancel();
+    Q_INVOKABLE void stopDownload();
     Q_INVOKABLE bool isDownloaded(const QUrl &url) const;
 
     // DownloadReceiver interface

src/app/qml/DownloadPage.qml

@@ -62,6 +62,8 @@ Page {
                     qsTr("Preparing %1").arg(file)
                 else if (currentStatus === Units.DownloadStatus.Ready)
                     qsTr("Ready to write %1").arg(file)
+                else if (currentStatus === Units.DownloadStatus.Stopped)
+                    qsTr("%1 has been stopped").arg(file)
                 else if (currentStatus == Units.DownloadStatus.Failed_Download)
                     qsTr("Failed to download %1").arg(file)
                 else
@@ -110,12 +112,12 @@ Page {
                 }
 
                 Label {
-                    visible: currentStatus == Units.DownloadStatus.Downloading
+                    visible: currentStatus == Units.DownloadStatus.Downloading || currentStatus == Units.DownloadStatus.Stopped
                     text: progressColumn.leftStr
                 }
 
                 Label {
-                    visible: currentStatus == Units.DownloadStatus.Downloading
+                    visible: currentStatus == Units.DownloadStatus.Downloading || currentStatus == Units.DownloadStatus.Stopped
                     text: progressColumn.rightStr
                 }
             }
@@ -156,6 +158,14 @@ Page {
                 width: mainColumn.width
             }
 
+            Label {
+                id: messageContinueDownload
+                visible: false
+                text: qsTr("Download has been stopped.")
+                wrapMode: Label.Wrap
+                width: mainColumn.width
+            }
+
             Label {
                 id: messageRestore
                 visible: false
@@ -321,6 +331,18 @@ Page {
                 target: messageLoseData;
                 visible: true
             }
+        },
+        State {
+            name: "stopped"
+            when: currentStatus === Units.DownloadStatus.Stopped
+            PropertyChanges {
+                target: progressBar;
+                value: releases.variant.progress.ratio
+            }
+            PropertyChanges {
+                target: messageContinueDownload;
+                visible: true
+            }
         }
         // Unhandled states:
         // preparing. writing_not_possible, failed_verification_no_drives,failed_download, failed_no_drives
@@ -349,7 +371,7 @@ Page {
 
     function getNextButtonState() {
         // This will be [Finish] button to successfully go to the main page
-        if (currentStatus == Units.DownloadStatus.Finished)
+        if (currentStatus == Units.DownloadStatus.Finished || currentStatus == Units.DownloadStatus.Stopped)
             return true
         // This will be [Retry] button to start the process again if there is a drive plugged in
         else if (currentStatus == Units.DownloadStatus.Ready ||

src/app/qml/Units.qml

@@ -59,6 +59,7 @@ QtObject {
         Downloading,
         Download_Verifying,
         Ready,
+        Stopped,
         Writing_Not_Possible,
         Writing,
         Write_Verifying,

src/app/qml/main.qml

@@ -101,7 +101,6 @@ ApplicationWindow {
 
             Button {
                 id: nextButton
-                visible: mainLayout.state != "downloadPage" 
                 enabled: mainLayout.state != "drivePage" 
                 text: getNextButtonText()
             }
@@ -215,8 +214,11 @@ ApplicationWindow {
                     target: prevButton
                     visible: true
                     onClicked: {
-                        if (releases.variant.status === Units.DownloadStatus.Write_Verifying || releases.variant.status === Units.DownloadStatus.Writing || releases.variant.status === Units.DownloadStatus.Downloading || releases.variant.status === Units.DownloadStatus.Download_Verifying) {
+                        if (releases.variant.status === Units.DownloadStatus.Write_Verifying || releases.variant.status === Units.DownloadStatus.Writing || releases.variant.status === Units.DownloadStatus.Stopped || releases.variant.status === Units.DownloadStatus.Download_Verifying) {
                             cancelDialog.show()
+                        } else if (releases.variant.status === Units.DownloadStatus.Downloading) {
+                            downloadManager.stopDownload()
+                            releases.variant.setStatus(Units.DownloadStatus.Stopped)
                         } else {
                             releases.variant.resetStatus()
                             downloadManager.cancel()
@@ -237,7 +239,16 @@ ApplicationWindow {
                             if (selectedOption != Units.MainSelect.Write)
                                 releases.variant.download()
                             drives.selected.setImage(releases.variant)
-                            drives.selected.write(releases.variant)
+                            drives.selected.write(releases.variant)   
+                        } else if (releases.variant.status === Units.DownloadStatus.Preparing) {
+                            releases.variant.download()
+                        } else if (releases.variant.status === Units.DownloadStatus.Stopped) {
+                            if (selectedOption != Units.MainSelect.Write) 
+                                releases.variant.download()
+                            if (drives.length) {
+                                drives.selected.setImage(releases.variant)
+                                drives.selected.write(releases.variant)
+                            }
                         }
                     }
                 }
@@ -296,12 +307,14 @@ ApplicationWindow {
                 return qsTr("Download && Write")
             return qsTr("Download & Write") 
         } else if (mainLayout.state == "downloadPage") {
-            if (releases.variant.status === Units.DownloadStatus.Write_Verifying || releases.variant.status === Units.DownloadStatus.Writing || releases.variant.status === Units.DownloadStatus.Downloading || releases.variant.status === Units.DownloadStatus.Download_Verifying)
+            if (releases.variant.status === Units.DownloadStatus.Write_Verifying || releases.variant.status === Units.DownloadStatus.Writing || releases.variant.status === Units.DownloadStatus.Download_Verifying)
                 return qsTr("Cancel")
             else if (releases.variant.status == Units.DownloadStatus.Ready)
                 return qsTr("Write")
             else if (releases.variant.status === Units.DownloadStatus.Finished)
                 return qsTr("Finish")
+            else if (releases.variant.status === Units.DownloadStatus.Stopped)
+                return qsTr("Resume")
             else
                 return qsTr("Retry")
         }
@@ -311,8 +324,12 @@ ApplicationWindow {
     function getPrevButtonText() {
         if (mainLayout.state == "mainPage") 
             return qsTr("About")
-        else if (mainLayout.state == "downloadPage")
-            return qsTr("Cancel")
+        else if (mainLayout.state == "downloadPage") {
+            if (releases.variant.status === Units.DownloadStatus.Downloading)
+                return qsTr("Pause")
+            else
+                return qsTr("Cancel")
+        }
         return qsTr("Previous")
     }
 }

src/app/releasemanager.h

@@ -373,12 +373,13 @@ class ReleaseVariant : public QObject, public DownloadReceiver
 public:
     enum Type { LIVE = 0, NETINSTALL, FULL, ATOMIC };
     Q_ENUMS(Type)
-    enum Status { PREPARING = 0, DOWNLOADING, DOWNLOAD_VERIFYING, READY, WRITING_NOT_POSSIBLE, WRITING, WRITE_VERIFYING, FINISHED, FAILED_VERIFICATION, FAILED_DOWNLOAD, FAILED };
+    enum Status { PREPARING = 0, DOWNLOADING, DOWNLOAD_VERIFYING, READY, STOPPED, WRITING_NOT_POSSIBLE, WRITING, WRITE_VERIFYING, FINISHED, FAILED_VERIFICATION, FAILED_DOWNLOAD, FAILED };
     Q_ENUMS(Status)
     const QStringList m_statusStrings{tr("Preparing"),
                                       tr("Downloading"),
                                       tr("Checking the download"),
                                       tr("Ready to write"),
+                                      tr("Download has been stopped"),
                                       tr("Image file was saved to your downloads folder. Writing is not possible"),
                                       tr("Writing"),
                                       tr("Checking the written data"),
@@ -414,7 +415,6 @@ class ReleaseVariant : public QObject, public DownloadReceiver
 
     Status status() const;
     QString statusString() const;
-    void setStatus(Status s);
     QString errorString() const;
     void setErrorString(const QString &o);
 
@@ -439,6 +439,7 @@ class ReleaseVariant : public QObject, public DownloadReceiver
 public slots:
     void download();
     void resetStatus();
+    void setStatus(Status s);
 
 private:
     QString m_temporaryIso{};