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+/** Exceptions.hh file for the fluxbox compositor. */
+
+// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#ifndef FBCOMPOSITOR_EXCEPTIONS_HH
+#define FBCOMPOSITOR_EXCEPTIONS_HH
+
+#include "FbTk/FbString.hh"
+
+#include <exception>
+
+
+namespace FbCompositor {
+
+    //--- BASE EXCEPTION -------------------------------------------------------
+
+    /**
+     * Base class for all exceptions in the project's namespace.
+     */
+    class CompositorException : public std::exception {
+    public:
+        /** The constructor. */
+        CompositorException(FbTk::FbString error_message) :
+            m_error_message(error_message) {}
+
+        /** Destructor. */
+        virtual ~CompositorException() throw() {}
+
+        /** \returns The main error message.  */
+        virtual const char *what() const throw() { return m_error_message.c_str(); }
+
+    private:
+        /** The exception's main message. */
+        FbTk::FbString m_error_message;
+    };
+
+
+    //--- DERIVED EXCEPTIONS ---------------------------------------------------
+
+    /**
+     * This exception is thrown whenever an error condition is encountered in
+     * initialization of compositor's components.
+     */
+    class InitException : public CompositorException {
+    public:
+        /** Public constructor. */
+        InitException(FbTk::FbString error_message) :
+            CompositorException(error_message) {}
+    };
+
+    /**
+     * This exception is thrown whenever an error condition is encountered when
+     * the compositor has been initialized and is running.
+     */
+    class RuntimeException : public CompositorException {
+    public:
+        /** Public constructor. */
+        RuntimeException(FbTk::FbString error_message) :
+            CompositorException(error_message) {}
+    };
+
+
+    //--- MORE CONCRETE EXCEPTION TYPES ----------------------------------------
+
+    /**
+     * This exception is thrown whenever an error condition is encountered
+     * when processing the configuration data.
+     */
+    class ConfigException : public InitException {
+    public:
+        /** Public constructor. */
+        ConfigException(FbTk::FbString error_message) :
+            InitException(error_message) {}
+    };
+
+    /**
+     * This exception is thrown whenever an error condition is encountered
+     * while initializing (loading, creating instances etc) plugins.
+     */
+    class PluginException : public InitException {
+    public:
+        /** Public constructor. */
+        PluginException(FbTk::FbString error_message) :
+            InitException(error_message) {}
+    };
+
+
+    /**
+     * This exception is thrown whenever an index-related error condition
+     * occurs.
+     */
+    class IndexException : public RuntimeException {
+    public:
+        /** Public constructor. */
+        IndexException(FbTk::FbString error_message) :
+            RuntimeException(error_message) {}
+    };
+
+    /**
+     * This exception is thrown whenever an error occurs while attempting to
+     * obtain current system time.
+     */
+    class TimeException : public RuntimeException {
+    public:
+        /** Public constructor. */
+        TimeException(FbTk::FbString error_message) :
+            RuntimeException(error_message) {}
+    };
+
+    /**
+     * This exception is thrown whenever an error occurs while manipulating the
+     * windows in response to X's events.
+     */
+    class WindowException : public RuntimeException {
+    public:
+        /** Public constructor. */
+        WindowException(FbTk::FbString error_message) :
+            RuntimeException(error_message) {}
+    };
+}
+
+#endif  // FBCOMPOSITOR_EXCEPTIONS_HH