feat(settings): add group chat local member black list

doc/user_manual_en.md

@@ -268,6 +268,10 @@ will alter your Tox ID. You don't need to tell your existing contacts your new
 Tox ID, but you have to tell new contacts your new Tox ID. Your Tox ID can be
 found in your [User Profile](#user-profile).
 
+#### BlackList
+
+BlackList is a feature of qTox that locally blocks a group member's messages across all your joined groups, in case someone spams a group. You need to put a members public key into the BlackList text box one per line to activate it. Currently qTox doesn't have a method to get the public key from a group member, this will be added in the future.
+
 ### Audio/Video
 #### Audio Settings
 

src/persistence/settings.cpp

@@ -336,6 +336,7 @@ void Settings::loadPersonal(Profile* profile)
     {
         typingNotification = ps.value("typingNotification", true).toBool();
         enableLogging = ps.value("enableLogging", true).toBool();
+        blackList = ps.value("blackList").toString().split('\n');
     }
     ps.endGroup();
 
@@ -686,6 +687,7 @@ void Settings::savePersonal(QString profileName, const ToxEncrypt* passkey)
     {
         ps.setValue("typingNotification", typingNotification);
         ps.setValue("enableLogging", enableLogging);
+        ps.setValue("blackList", blackList.join('\n'));
     }
     ps.endGroup();
 
@@ -1733,6 +1735,22 @@ void Settings::setTypingNotification(bool enabled)
     }
 }
 
+QStringList Settings::getBlackList() const
+{
+    QMutexLocker locker{&bigLock};
+    return blackList;
+}
+
+void Settings::setBlackList(const QStringList& blist)
+{
+    QMutexLocker locker{&bigLock};
+
+    if (blist != blackList) {
+        blackList = blist;
+        emit blackListChanged(blackList);
+    }
+}
+
 QString Settings::getInDev() const
 {
     QMutexLocker locker{&bigLock};

src/persistence/settings.h

@@ -89,6 +89,7 @@ class Settings : public QObject
     // Privacy
     Q_PROPERTY(bool typingNotification READ getTypingNotification WRITE setTypingNotification NOTIFY
                    typingNotificationChanged FINAL)
+    Q_PROPERTY(QStringList blackList READ getBlackList WRITE setBlackList NOTIFY blackListChanged FINAL)
 
     // Audio
     Q_PROPERTY(QString inDev READ getInDev WRITE setInDev NOTIFY inDevChanged FINAL)
@@ -227,6 +228,7 @@ public slots:
     // Privacy
     void typingNotificationChanged(bool enabled);
     void dbSyncTypeChanged(Db::syncType type);
+    void blackListChanged(QStringList& blist);
 
     // Audio
     void inDevChanged(const QString& name);
@@ -436,6 +438,8 @@ public slots:
     // Privacy
     bool getTypingNotification() const;
     void setTypingNotification(bool enabled);
+    QStringList getBlackList() const;
+    void setBlackList(const QStringList& blist);
 
     // State
     QByteArray getWindowGeometry() const;
@@ -614,6 +618,7 @@ public slots:
     // Privacy
     bool typingNotification;
     Db::syncType dbSyncType;
+    QStringList blackList;
 
     // Audio
     QString inDev;

src/widget/form/settings/privacyform.cpp

@@ -92,6 +92,7 @@ void PrivacyForm::showEvent(QShowEvent*)
     bodyUI->nospamLineEdit->setText(Core::getInstance()->getSelfId().getNoSpamString());
     bodyUI->cbTypingNotification->setChecked(s.getTypingNotification());
     bodyUI->cbKeepHistory->setChecked(Settings::getInstance().getEnableLogging());
+    bodyUI->blackListTextEdit->setText(s.getBlackList().join('\n'));
 }
 
 void PrivacyForm::on_randomNosapamButton_clicked()
@@ -118,6 +119,12 @@ void PrivacyForm::on_nospamLineEdit_textChanged()
     };
 }
 
+void PrivacyForm::on_blackListTextEdit_textChanged()
+{
+    const QStringList strlist = bodyUI->blackListTextEdit->toPlainText().split('\n');
+    Settings::getInstance().setBlackList(strlist);
+}
+
 void PrivacyForm::retranslateUi()
 {
     bodyUI->retranslateUi(this);

src/widget/form/settings/privacyform.h

@@ -43,6 +43,7 @@ private slots:
     void on_nospamLineEdit_editingFinished();
     void on_randomNosapamButton_clicked();
     void on_nospamLineEdit_textChanged();
+    void on_blackListTextEdit_textChanged();
     virtual void showEvent(QShowEvent*) final override;
 
 private:

src/widget/form/settings/privacysettings.ui

@@ -36,8 +36,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>384</width>
-        <height>343</height>
+        <width>364</width>
+        <height>509</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_3">
@@ -117,6 +117,25 @@ If you are getting spammed with friend requests, change the NoSpam.</string>
          </layout>
         </widget>
        </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox">
+         <property name="toolTip">
+          <string/>
+         </property>
+         <property name="title">
+          <string>BlackList</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout_2">
+          <item>
+           <widget class="QTextEdit" name="blackListTextEdit">
+            <property name="toolTip">
+             <string>Filter group message by group member's public key. Put public key here, one per line.</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
        <item>
         <spacer name="verticalSpacer">
          <property name="orientation">

src/widget/widget.cpp

@@ -1689,6 +1689,12 @@ void Widget::onGroupMessageReceived(int groupnumber, int peernumber, const QStri
     ToxPk author = core->getGroupPeerPk(groupnumber, peernumber);
     bool isSelf = author == core->getSelfId().getPublicKey();
 
+    const Settings& s = Settings::getInstance();
+    if (s.getBlackList().contains(author.toString())) {
+        qDebug() << "onGroupMessageReceived: Filtered:" << author.toString();
+        return;
+    }
+
     bool targeted =
         !isSelf && (message.contains(nameMention) || message.contains(sanitizedNameMention));
     if (targeted && !isAction) {