src/ui_interface.h

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2012-2016 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #ifndef BITCOIN_UI_INTERFACE_H
   7 #define BITCOIN_UI_INTERFACE_H
   8
   9 #include <stdint.h>
  10 #include <string>
  11
  12 #include <boost/signals2/last_value.hpp>
  13 #include <boost/signals2/signal.hpp>
  14
  15 class CWallet;
  16 class CBlockIndex;
  17
  18 /** General change type (added, updated, removed). */
  19 enum ChangeType
  20 {
  21     CT_NEW,
  22     CT_UPDATED,
  23     CT_DELETED
  24 };
  25
  26 /** Signals for UI communication. */
  27 class CClientUIInterface
  28 {
  29 public:
  30     /** Flags for CClientUIInterface::ThreadSafeMessageBox */
  31     enum MessageBoxFlags
  32     {
  33         ICON_INFORMATION    = 0,
  34         ICON_WARNING        = (1U << 0),
  35         ICON_ERROR          = (1U << 1),
  36         /**
  37          * Mask of all available icons in CClientUIInterface::MessageBoxFlags
  38          * This needs to be updated, when icons are changed there!
  39          */
  40         ICON_MASK = (ICON_INFORMATION | ICON_WARNING | ICON_ERROR),
  41
  42         /** These values are taken from qmessagebox.h "enum StandardButton" to be directly usable */
  43         BTN_OK      = 0x00000400U, // QMessageBox::Ok
  44         BTN_YES     = 0x00004000U, // QMessageBox::Yes
  45         BTN_NO      = 0x00010000U, // QMessageBox::No
  46         BTN_ABORT   = 0x00040000U, // QMessageBox::Abort
  47         BTN_RETRY   = 0x00080000U, // QMessageBox::Retry
  48         BTN_IGNORE  = 0x00100000U, // QMessageBox::Ignore
  49         BTN_CLOSE   = 0x00200000U, // QMessageBox::Close
  50         BTN_CANCEL  = 0x00400000U, // QMessageBox::Cancel
  51         BTN_DISCARD = 0x00800000U, // QMessageBox::Discard
  52         BTN_HELP    = 0x01000000U, // QMessageBox::Help
  53         BTN_APPLY   = 0x02000000U, // QMessageBox::Apply
  54         BTN_RESET   = 0x04000000U, // QMessageBox::Reset
  55         /**
  56          * Mask of all available buttons in CClientUIInterface::MessageBoxFlags
  57          * This needs to be updated, when buttons are changed there!
  58          */
  59         BTN_MASK = (BTN_OK | BTN_YES | BTN_NO | BTN_ABORT | BTN_RETRY | BTN_IGNORE |
  60                     BTN_CLOSE | BTN_CANCEL | BTN_DISCARD | BTN_HELP | BTN_APPLY | BTN_RESET),
  61
  62         /** Force blocking, modal message box dialog (not just OS notification) */
  63         MODAL               = 0x10000000U,
  64
  65         /** Do not print contents of message to debug log */
  66         SECURE              = 0x40000000U,
  67
  68         /** Predefined combinations for certain default usage cases */
  69         MSG_INFORMATION = ICON_INFORMATION,
  70         MSG_WARNING = (ICON_WARNING | BTN_OK | MODAL),
  71         MSG_ERROR = (ICON_ERROR | BTN_OK | MODAL)
  72     };
  73
  74     /** Show message box. */
  75     boost::signals2::signal<bool (const std::string& message, const std::string& caption, unsigned int style), boost::signals2::last_value<bool> > ThreadSafeMessageBox;
  76
  77     /** If possible, ask the user a question. If not, falls back to ThreadSafeMessageBox(noninteractive_message, caption, style) and returns false. */
  78     boost::signals2::signal<bool (const std::string& message, const std::string& noninteractive_message, const std::string& caption, unsigned int style), boost::signals2::last_value<bool> > ThreadSafeQuestion;
  79
  80     /** Progress message during initialization. */
  81     boost::signals2::signal<void (const std::string &message)> InitMessage;
  82
  83     /** Number of network connections changed. */
  84     boost::signals2::signal<void (int newNumConnections)> NotifyNumConnectionsChanged;
  85
  86     /** Network activity state changed. */
  87     boost::signals2::signal<void (bool networkActive)> NotifyNetworkActiveChanged;
  88
  89     /**
  90      * Status bar alerts changed.
  91      */
  92     boost::signals2::signal<void ()> NotifyAlertChanged;
  93
  94     /** A wallet has been loaded. */
  95     boost::signals2::signal<void (CWallet* wallet)> LoadWallet;
  96
  97     /**
  98      * Show progress e.g. for verifychain.
  99      * resume_possible indicates shutting down now will result in the current progress action resuming upon restart.
 100      */
 101     boost::signals2::signal<void (const std::string &title, int nProgress, bool resume_possible)> ShowProgress;
 102
 103     /** New block has been accepted */
 104     boost::signals2::signal<void (bool, const CBlockIndex *)> NotifyBlockTip;
 105
 106     /** Best header has changed */
 107     boost::signals2::signal<void (bool, const CBlockIndex *)> NotifyHeaderTip;
 108
 109     /** Banlist did change. */
 110     boost::signals2::signal<void (void)> BannedListChanged;
 111 };
 112
 113 /** Show warning message **/
 114 void InitWarning(const std::string& str);
 115
 116 /** Show error message **/
 117 bool InitError(const std::string& str);
 118
 119 std::string AmountHighWarn(const std::string& optname);
 120
 121 std::string AmountErrMsg(const char* const optname, const std::string& strValue);
 122
 123 extern CClientUIInterface uiInterface;
 124
 125 #endif // BITCOIN_UI_INTERFACE_H