From a2e91361e87ddf47073a82e7a968e1ed39d277d3 Mon Sep 17 00:00:00 2001
From: Luv Khemani <luvb@hotmail.com>
Date: Sat, 27 Feb 2016 11:57:12 +0800
Subject: [PATCH] Add autocomplete to bitcoin-qt's console window.

https://github.com/bitcoin/bitcoin/pull/7613/commits/ce7413fcb7d28bd72e5ade7dc9756504de766fc2
---
 src/qt/rpcconsole.cpp | 15 ++++++++++++++-
 src/qt/rpcconsole.h   |  3 +++
 src/rpcserver.cpp     | 11 +++++++++++
 src/rpcserver.h       |  7 +++++++
 4 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index 56c58b839..90a9806df 100644
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -31,6 +31,7 @@
 #include <QThread>
 #include <QTime>
 #include <QTimer>
+#include <QStringList>
 
 #if QT_VERSION < 0x050000
 #include <QUrl>
@@ -430,7 +431,19 @@ void RPCConsole::setClientModel(ClientModel *model)
         ui->buildDate->setText(model->formatBuildDate());
         ui->startupTime->setText(model->formatClientStartupTime());
         ui->networkName->setText(QString::fromStdString(Params().NetworkIDString()));
-    }
+
+        //Setup autocomplete and attach it
+        QStringList wordList;
+        std::vector<std::string> commandList = tableRPC.listCommands();
+        for (size_t i = 0; i < commandList.size(); ++i)
+        {
+            wordList << commandList[i].c_str();
+        }
+
+        autoCompleter = new QCompleter(wordList, this);
+        ui->lineEdit->setCompleter(autoCompleter);
+
+        }
 }
 
 static QString categoryClass(int category)
diff --git a/src/qt/rpcconsole.h b/src/qt/rpcconsole.h
index 162d61cfd..5f96e51e0 100644
--- a/src/qt/rpcconsole.h
+++ b/src/qt/rpcconsole.h
@@ -11,6 +11,7 @@
 #include "net.h"
 
 #include <QWidget>
+#include <QCompleter>
 
 class ClientModel;
 class PlatformStyle;
@@ -134,6 +135,8 @@ private:
     RPCTimerInterface *rpcTimerInterface;
     QMenu *peersTableContextMenu;
     QMenu *banTableContextMenu;
+
+    QCompleter *autoCompleter;
 };
 
 #endif // BITCOIN_QT_RPCCONSOLE_H
diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp
index 24ba7d099..50e1c13c5 100644
--- a/src/rpcserver.cpp
+++ b/src/rpcserver.cpp
@@ -548,6 +548,17 @@ UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params
     g_rpcSignals.PostCommand(*pcmd);
 }
 
+std::vector<std::string> CRPCTable::listCommands() const
+{
+    std::vector<std::string> commandList;
+    typedef std::map<std::string, const CRPCCommand*> commandMap;
+
+    std::transform( mapCommands.begin(), mapCommands.end(),
+                   std::back_inserter(commandList),
+                   boost::bind(&commandMap::value_type::first,_1) );
+    return commandList;
+}
+
 std::string HelpExampleCli(const std::string& methodname, const std::string& args)
 {
     return "> bitcoin-cli " + methodname + " " + args + "\n";
diff --git a/src/rpcserver.h b/src/rpcserver.h
index 50846fd1e..c63db901b 100644
--- a/src/rpcserver.h
+++ b/src/rpcserver.h
@@ -142,6 +142,13 @@ public:
      * @throws an exception (UniValue) when an error happens.
      */
     UniValue execute(const std::string &method, const UniValue &params) const;
+
+    /**
+    * Returns a list of registered commands
+    * @returns List of registered commands.
+    */
+    std::vector<std::string> listCommands() const;
+
 };
 
 extern const CRPCTable tableRPC;