Currently if somebody wants to do some peer operations (for whatever reason) via the GUI, they have to select 1-by-1 and do them individually. This is just very inefficient when the same operation has to be carried out on multiple peers. It would be nice to be able to select multiple peer at once and e.g. ban them all.

bool parseBitcoinURI(QString uri, SendCoinsRecipient *out);
    QString formatBitcoinURI(const SendCoinsRecipient &info);
    
    bool isDust(const QString& address, const CAmount& amount);
    
    QString HtmlEscape(const QString& str, bool fMultiLine=false);
    QString HtmlEscape(const std::string& str, bool fMultiLine=false);
    /** Copy a field of the currently selected entry of a view to the clipboard. Does nothing if nothing
        is selected.
       @param[in] column  Data column to extract from the model
       @param[in] role    Data role to extract from the model
       @see  TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress
     */
    void copyEntryData(QAbstractItemView *view, int column, int role=Qt::EditRole);
    /** Return a field of the currently selected entry as a QString. Does nothing if nothing
        is selected.
       @param[in] column  Data column to extract from the model
       @see  TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress
     */
    QList<QModelIndex> getEntryData(QAbstractItemView *view, int column);
    void setClipboard(const QString& str);
    /** Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix
        when no suffix is provided by the user.
      @param[in] parent  Parent window (or 0)
      @param[in] caption Window caption (or empty, for default)
      @param[in] dir     Starting directory (or empty, to default to documents directory)
      @param[in] filter  Filter specification such as "Comma Separated Files (*.csv)"
      @param[out] selectedSuffixOut  Pointer to return the suffix (file type) that was selected (or 0).
                  Can be useful when choosing the save file format based on suffix.
     */