Add the foundation for the event system

10 files changed, 488 insertions, 0 deletions

diff --git a/mana.cbp b/mana.cbp
index 15ef4cde..02c4bcd9 100644
--- a/mana.cbp
+++ b/mana.cbp
@@ -130,6 +130,10 @@
 		<Unit filename="src\emoteshortcut.cpp" />
 		<Unit filename="src\emoteshortcut.h" />
 		<Unit filename="src\equipment.h" />
+		<Unit filename="src\event.cpp" />
+		<Unit filename="src\event.h" />
+		<Unit filename="src\eventmanager.cpp" />
+		<Unit filename="src\eventmanager.h" />
 		<Unit filename="src\flooritem.cpp" />
 		<Unit filename="src\flooritem.h" />
 		<Unit filename="src\game.cpp" />
@@ -358,6 +362,8 @@
 		<Unit filename="src\joystick.h" />
 		<Unit filename="src\keyboardconfig.cpp" />
 		<Unit filename="src\keyboardconfig.h" />
+		<Unit filename="src\listener.cpp" />
+		<Unit filename="src\listener.h" />
 		<Unit filename="src\localplayer.cpp" />
 		<Unit filename="src\localplayer.h" />
 		<Unit filename="src\log.cpp" />
@@ -596,6 +602,7 @@
 		<Unit filename="src\utils\stringutils.h" />
 		<Unit filename="src\utils\xml.cpp" />
 		<Unit filename="src\utils\xml.h" />
+		<Unit filename="src\variabledata.h" />
 		<Unit filename="src\vector.cpp" />
 		<Unit filename="src\vector.h" />
 		<Unit filename="src\winver.h" />
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c632de66..d4845085 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -439,6 +439,10 @@ SET(SRCS
     emoteshortcut.cpp
     emoteshortcut.h
     equipment.h
+    event.cpp
+    event.h
+    eventmanager.cpp
+    eventmanager.h
     flooritem.cpp
     flooritem.h
     game.cpp
@@ -462,6 +466,8 @@ SET(SRCS
     joystick.h
     keyboardconfig.cpp
     keyboardconfig.h
+    listener.cpp
+    listener.h
     localplayer.cpp
     localplayer.h
     log.cpp
@@ -507,6 +513,7 @@ SET(SRCS
     tileset.h
     units.cpp
     units.h
+    variabledata.h
     vector.cpp
     vector.h
     )
diff --git a/src/Makefile.am b/src/Makefile.am
index 25f62de8..8324671b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -338,6 +338,10 @@ mana_SOURCES = gui/widgets/avatarlistbox.cpp \
 	      emoteshortcut.cpp \
 	      emoteshortcut.h \
 	      equipment.h \
+	      event.cpp \
+	      event.h \
+	      eventmanager.cpp \
+	      eventmanager.h \
 	      flooritem.cpp \
 	      flooritem.h \
 	      game.cpp \
@@ -361,6 +365,8 @@ mana_SOURCES = gui/widgets/avatarlistbox.cpp \
 	      joystick.h \
 	      keyboardconfig.cpp \
 	      keyboardconfig.h \
+	      listener.cpp \
+	      listener.h \
 	      localplayer.cpp \
 	      localplayer.h \
 	      log.cpp \
@@ -406,6 +412,7 @@ mana_SOURCES = gui/widgets/avatarlistbox.cpp \
 	      tileset.h \
 	      units.cpp \
 	      units.h \
+	      variabledata.h \
 	      vector.cpp \
 	      vector.h \
 	      winver.h
diff --git a/src/event.cpp b/src/event.cpp
new file mode 100644
index 00000000..87179ae1
--- /dev/null
+++ b/src/event.cpp
@@ -0,0 +1,99 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "event.h"
+
+#include "variabledata.h"
+
+namespace Mana
+{
+
+Event::~Event()
+{
+    VariableMap::iterator it = mData.begin();
+    while (it != mData.end())
+    {
+        delete it->second;
+        it++;
+    }
+}
+
+void Event::setInt(const std::string &key, int value) throw (BadEvent)
+{
+    if (mData.find(key) != mData.end())
+        throw KEY_ALREADY_EXISTS;
+
+    mData[key] = new IntData(value);
+}
+
+int Event::getInt(const std::string &key) const throw (BadEvent)
+{
+    VariableMap::const_iterator it = mData.find(key);
+    if (it == mData.end())
+        throw BAD_KEY;
+
+    if (it->second->getType() != VariableData::DATA_INT)
+        throw BAD_VALUE;
+
+    return static_cast<IntData *>(it->second)->getData();
+}
+
+void Event::setString(const std::string &key, const std::string &value) throw (BadEvent)
+{
+    if (mData.find(key) != mData.end())
+        throw KEY_ALREADY_EXISTS;
+
+    mData[key] = new StringData(value);
+}
+
+const std::string &Event::getString(const std::string &key) const throw (BadEvent)
+{
+    VariableMap::const_iterator it = mData.find(key);
+    if (it == mData.end())
+        throw BAD_KEY;
+
+    if (it->second->getType() != VariableData::DATA_STRING)
+        throw BAD_VALUE;
+
+    return static_cast<StringData *>(it->second)->getData();
+}
+
+
+void Event::setFloat(const std::string &key, double value) throw (BadEvent)
+{
+    if (mData.find(key) != mData.end())
+        throw KEY_ALREADY_EXISTS;
+
+    mData[key] = new FloatData(value);
+}
+
+double Event::getFloat(const std::string &key) const throw (BadEvent)
+{
+    VariableMap::const_iterator it = mData.find(key);
+    if (it == mData.end())
+        throw BAD_KEY;
+
+    if (it->second->getType() != VariableData::DATA_FLOAT)
+        throw BAD_VALUE;
+
+    return static_cast<FloatData *>(it->second)->getData();
+}
+
+}; // namespace Mana
diff --git a/src/event.h b/src/event.h
new file mode 100644
index 00000000..d856bd6c
--- /dev/null
+++ b/src/event.h
@@ -0,0 +1,73 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef EVENT_H
+#define EVENT_H
+
+#include <string>
+#include <map>
+
+namespace Mana
+{
+
+// Possible exception that can be thrown
+enum BadEvent {
+    BAD_KEY,
+    BAD_VALUE,
+    KEY_ALREADY_EXISTS
+};
+
+class VariableData;
+typedef std::map<std::string, VariableData *> VariableMap;
+
+class Event
+{
+    public:
+    // String passed can be retivered with getName()
+    // and is to used to identify what type of event
+    // this is.
+    Event(const std::string &name)
+    { mEventName = name; }
+
+    ~Event();
+
+    const std::string &getName() const
+    { return mEventName; }
+
+    // Sets or gets a interger with a key to identify
+    void setInt(const std::string &key, int value) throw (BadEvent);
+    int getInt(const std::string &key) const throw (BadEvent);
+
+    // Sets or gets a string with a key to identify
+    void setString(const std::string &key, const std::string &value) throw (BadEvent);
+    const std::string &getString(const std::string &key) const throw (BadEvent);
+
+    // Sets or gets a floating point number with key to identify
+    void setFloat(const std::string &key, double value) throw (BadEvent);
+    double getFloat(const std::string &key) const throw (BadEvent);
+
+    private:
+    std::string mEventName;
+
+    VariableMap mData;
+};
+
+}; // namespace Mana
+#endif
diff --git a/src/eventmanager.cpp b/src/eventmanager.cpp
new file mode 100644
index 00000000..ec589bbf
--- /dev/null
+++ b/src/eventmanager.cpp
@@ -0,0 +1,67 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "eventmanager.h"
+
+#include "listener.h"
+
+namespace Mana
+{
+
+ListenMap EventManager::mBindings;
+
+void EventManager::trigger(const std::string &channel, const Event &event)
+{
+    ListenMap::iterator it = mBindings.find(channel);
+
+    // Make sure something is listening
+    if (it == mBindings.end())
+        return;
+
+    // Loop though all listeners
+    ListenerSet::iterator lit = it->second.begin();
+    while (lit != it->second.end())
+    {
+        (*lit)->event(channel, event);
+        lit++;
+    }
+}
+
+void EventManager::remove(Listener *listener)
+{
+    ListenMap::iterator it = mBindings.begin();
+    while (it != mBindings.end())
+    {
+        it->second.erase(listener);
+        it++;
+    }
+}
+
+void EventManager::bind(Listener *listener, const std::string &channel)
+{
+    mBindings[channel].insert(listener);
+}
+
+void EventManager::unbind(Listener *listener, const std::string &channel)
+{
+    mBindings[channel].erase(listener);
+}
+
+}; // namespace Mana
diff --git a/src/eventmanager.h b/src/eventmanager.h
new file mode 100644
index 00000000..5823ef62
--- /dev/null
+++ b/src/eventmanager.h
@@ -0,0 +1,56 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef EVENTMANAGER_H
+#define EVENTMANAGER_H
+
+#include <string>
+#include <map>
+#include <set>
+
+namespace Mana
+{
+
+class Event;
+class Listener;
+
+typedef std::set<Listener *> ListenerSet;
+typedef std::map<std::string, ListenerSet > ListenMap;
+
+class EventManager
+{
+    public:
+    // Sends event to all listener on the channel
+    static void trigger(const std::string &channel, const Event &event);
+
+    // Removes a listener from all channels
+    static void remove(Listener *listener);
+
+    // Adds or removes a listener to a channel.
+    static void bind(Listener *listener, const std::string &channel);
+    static void unbind(Listener *listener, const std::string &channel);
+
+    private:
+    static ListenMap mBindings;
+};
+
+}; // namespace Mana
+
+#endif
diff --git a/src/listener.cpp b/src/listener.cpp
new file mode 100644
index 00000000..5ba3b16a
--- /dev/null
+++ b/src/listener.cpp
@@ -0,0 +1,43 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "listener.h"
+
+#include "eventmanager.h"
+
+namespace Mana
+{
+
+Listener::~Listener()
+{
+    EventManager::remove(this);
+}
+
+void Listener::listen(const std::string &channel)
+{
+    EventManager::bind(this, channel);
+}
+
+void Listener::ignore(const std::string &channel)
+{
+    EventManager::unbind(this, channel);
+}
+
+}; // namespace Mana
diff --git a/src/listener.h b/src/listener.h
new file mode 100644
index 00000000..edac13e9
--- /dev/null
+++ b/src/listener.h
@@ -0,0 +1,44 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LISTENER_H
+#define LISTENER_H
+
+#include <string>
+
+namespace Mana
+{
+
+class Event;
+
+class Listener
+{
+    public:
+    ~Listener();
+
+    void listen(const std::string &channel);
+
+    void ignore(const std::string &channel);
+
+    virtual void event(const std::string &channel, const Event &event) = 0;
+};
+
+}; // namespace Mana
+#endif
diff --git a/src/variabledata.h b/src/variabledata.h
new file mode 100644
index 00000000..6ba76318
--- /dev/null
+++ b/src/variabledata.h
@@ -0,0 +1,85 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2010  The Mana Developers
+ *
+ *  This file is part of The Mana Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef VARIABLEDATA_H
+#define VARIABLEDATA_H
+
+#include <string>
+
+namespace Mana
+{
+
+class VariableData
+{
+    public:
+    enum {
+        DATA_NONE,
+        DATA_INT,
+        DATA_STRING,
+        DATA_FLOAT
+    };
+
+    virtual ~VariableData() {};
+
+    virtual int getType() const = 0;
+};
+
+class IntData : public VariableData
+{
+    public:
+    IntData(int value) { mData = value; }
+
+    int getData() const { return mData; }
+
+    int getType() const { return DATA_INT; }
+
+    private:
+    int mData;
+};
+
+class StringData : public VariableData
+{
+    public:
+    StringData(const std::string &value) { mData = value; }
+
+    const std::string &getData() const { return mData; }
+
+    int getType() const { return DATA_STRING; }
+
+    private:
+    std::string mData;
+};
+
+class FloatData : public VariableData
+{
+    public:
+    FloatData(double value) { mData = value; }
+
+    double getData() const { return mData; }
+
+    int getType() const { return DATA_FLOAT; }
+
+    private:
+    double mData;
+};
+
+}; // namespace Mana
+
+#endif