Merge #10244: Refactor: separate gui from wallet and node

9960137 Add developer notes about blocking GUI code (Russell Yanofsky)
9a61eed Use WalletBalances struct in Qt (Russell Yanofsky)
56f33ca Remove direct bitcoin calls from qt/sendcoinsdialog.cpp (Russell Yanofsky)
e872c93 Remove direct bitcoin access from qt/guiutil.cpp (Russell Yanofsky)
5884558 Remove direct bitcoin calls from qt transaction table files (Russell Yanofsky)
3cab2ce Remove direct bitcoin calls from qt/paymentserver.cpp (Russell Yanofsky)
3ec2ebc Remove direct bitcoin calls from qt/addresstablemodel.cpp (Russell Yanofsky)
827de03 Remove direct bitcoin calls from qt/coincontroldialog.cpp (Russell Yanofsky)
a0704a8 Remove most direct bitcoin calls from qt/walletmodel.cpp (Russell Yanofsky)
90d4640 Remove direct bitcoin calls from qt/optionsdialog.cpp (Russell Yanofsky)
582daf6 Remove direct bitcoin calls from qt/rpcconsole.cpp (Russell Yanofsky)
3034a46 Remove direct bitcoin calls from qt/bantablemodel.cpp (Russell Yanofsky)
e0b66a3 Remove direct bitcoin calls from qt/peertablemodel.cpp (Russell Yanofsky)
d7c2c95 Remove direct bitcoin calls from qt/intro.cpp (Russell Yanofsky)
fe6f27e Remove direct bitcoin calls from qt/clientmodel.cpp (Russell Yanofsky)
5fba3af Remove direct bitcoin calls from qt/splashscreen.cpp (Russell Yanofsky)
c2f672f Remove direct bitcoin calls from qt/utilitydialog.cpp (Russell Yanofsky)
3d619e9 Remove direct bitcoin calls from qt/bitcoingui.cpp (Russell Yanofsky)
c0f2756 Remove direct bitcoin calls from qt/optionsmodel.cpp (Russell Yanofsky)
71e0d90 Remove direct bitcoin calls from qt/bitcoin.cpp (Russell Yanofsky)
ea73b84 Add src/interface/README.md (Russell Yanofsky)

Pull request description:

  This is a refactoring PR that does not change behavior in any way. This change:

  1. Creates abstract [`Node`](https://github.com/ryanofsky/bitcoin/blob/pr/ipc-local/src/interface/node.h) and [`Wallet`](https://github.com/ryanofsky/bitcoin/blob/pr/ipc-local/src/interface/wallet.h) interfaces in [`src/interface/`](https://github.com/ryanofsky/bitcoin/tree/pr/ipc-local/src/interface)
  1. Updates Qt code to call the new interfaces. This largely consists of diffs of the form:

  ```diff
  -    InitLogging();
  -    InitParameterInteraction();
  +    node.initLogging();
  +    node.initParameterInteraction();
  ```

  This change allows followup PR #10102 (makes `bitcoin-qt` control `bitcoind` over an IPC socket) to work without any significant updates to Qt code. Additionally:

  * It provides a single place to describe the interface between GUI and daemon code.
  * It can make better GUI testing possible, because Node and Wallet objects have virtual methods that can be overloaded for mocking.
  * It can be used to help make the GUI more responsive (see https://github.com/bitcoin/bitcoin/issues/10504)

  Other notes:

  * I used python scripts [hide-globals.py](https://github.com/ryanofsky/home/blob/master/src/2017/hide-globals/hide-globals.py) and [replace-syms.py](https://github.com/ryanofsky/home/blob/master/src/2017/hide-globals/replace-syms.py) to identify all the places where Qt code was accessing libbitcoin global variables and calling functions accessing those global variables.
  * These changes were originally part of #10102. Thanks to @JeremyRubin for the suggestion of splitting them out.

  Commits:

  - [`ea73b84d2d` Add src/interface/README.md](https://github.com/bitcoin/bitcoin/pull/10244/commits/ea73b84d2ddde22487dee0f71d7a619051e067f2)
  - [`71e0d90876` Remove direct bitcoin calls from qt/bitcoin.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/71e0d90876efd11e2a4aeb8f3f806c5a1fd54b42)
  - [`c0f2756be5` Remove direct bitcoin calls from qt/optionsmodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/c0f2756be517feddacd7c6b89b9faa888b3fef8e)
  - [`3d619e9d36` Remove direct bitcoin calls from qt/bitcoingui.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/3d619e9d3658e36cba4a19a5bed33e5538317b27)
  - [`c2f672fb19` Remove direct bitcoin calls from qt/utilitydialog.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/c2f672fb1960399389dea9cdd8f76d7156c2c88b)
  - [`5fba3af21e` Remove direct bitcoin calls from qt/splashscreen.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/5fba3af21e44ab7552c57782de430c1f4cfd6697)
  - [`fe6f27e6ea` Remove direct bitcoin calls from qt/clientmodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/fe6f27e6ea68a139d3a98b30a53706008ef8b132)
  - [`d7c2c95948` Remove direct bitcoin calls from qt/intro.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/d7c2c9594897c39df6739b92610dfb5a7a1cb3ec)
  - [`e0b66a3b7c` Remove direct bitcoin calls from qt/peertablemodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/e0b66a3b7c5d3a079636d61fcf611bb6b36c7bc1)
  - [`3034a462a5` Remove direct bitcoin calls from qt/bantablemodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/3034a462a5d30144cf0ec801d07f0c8c36d560f3)
  - [`582daf6d22` Remove direct bitcoin calls from qt/rpcconsole.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/582daf6d22da5394d02a12003b9542d9f5865ae2)
  - [`90d4640b7e` Remove direct bitcoin calls from qt/optionsdialog.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/90d4640b7eff3154a0750c5acb52d39bd41e0bbb)
  - [`a0704a8996` Remove most direct bitcoin calls from qt/walletmodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/a0704a8996bb950ae3c4d5b5a30e9dfe34cde1d3)
  - [`827de038ab` Remove direct bitcoin calls from qt/coincontroldialog.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/827de038ab6fa58aa3d46151eb2f8dc6add7743e)
  - [`3ec2ebcd9b` Remove direct bitcoin calls from qt/addresstablemodel.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/3ec2ebcd9b4beb4277f1f4791c6acbc538784f70)
  - [`3cab2ce5f9` Remove direct bitcoin calls from qt/paymentserver.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/3cab2ce5f9e159ad5a2e9ed682f28121b5248580)
  - [`58845587e1` Remove direct bitcoin calls from qt transaction table files](https://github.com/bitcoin/bitcoin/pull/10244/commits/58845587e11140e81f087a74c3db76a4d1fc3a1a)
  - [`e872c93ee8` Remove direct bitcoin access from qt/guiutil.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/e872c93ee87477130fb877da1a536b4c693bbab9)
  - [`56f33ca349` Remove direct bitcoin calls from qt/sendcoinsdialog.cpp](https://github.com/bitcoin/bitcoin/pull/10244/commits/56f33ca349b3721a15fce3bf0b6d4fd7fd788970)
  - [`9a61eed1fc` Use WalletBalances struct in Qt](https://github.com/bitcoin/bitcoin/pull/10244/commits/9a61eed1fcc16ddcedc315045f470e1958b0760b)
  - [`9960137697` Add developer notes about blocking GUI code](https://github.com/bitcoin/bitcoin/pull/10244/commits/996013769711bd507cdcd6dde88cbd59fcd4fbad)

Tree-SHA512: 7b9eff2f37d4ea21972d7cc6a3dbe144248595d6c330524396d867f3cd2841d666cdc040fd3605af559dab51b075812402f61d628d16cf13719335c1d8bf8ed3

1 files changed, 33 insertions, 0 deletions

diff --git a/src/interface/handler.cpp b/src/interface/handler.cpp
new file mode 100644
index 0000000000..4b27f374f4
--- /dev/null
+++ b/src/interface/handler.cpp
@@ -0,0 +1,33 @@
+// Copyright (c) 2018 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <interface/handler.h>
+
+#include <util.h>
+
+#include <boost/signals2/connection.hpp>
+#include <memory>
+#include <utility>
+
+namespace interface {
+namespace {
+
+class HandlerImpl : public Handler
+{
+public:
+    HandlerImpl(boost::signals2::connection connection) : m_connection(std::move(connection)) {}
+
+    void disconnect() override { m_connection.disconnect(); }
+
+    boost::signals2::scoped_connection m_connection;
+};
+
+} // namespace
+
+std::unique_ptr<Handler> MakeHandler(boost::signals2::connection connection)
+{
+    return MakeUnique<HandlerImpl>(std::move(connection));
+}
+
+} // namespace interface