1 files changed, 138 insertions, 0 deletions
diff --git a/libtdepim/diffalgo.h b/libtdepim/diffalgo.h
new file mode 100644
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+++ b/libtdepim/diffalgo.h
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+/*
+    This file is part of libtdepim.
+
+    Copyright (c) 2004 Tobias Koenig <tokoe@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef DIFFALGO_H
+#define DIFFALGO_H
+
+#include <tqvaluelist.h>
+#include <tdepimmacros.h>
+
+namespace KPIM {
+
+/**
+  DiffAlgo and DiffAlgoDisplay work together for displaying differences between
+  two PIM objects like contacts, events or todos.
+  DiffAlgo is the bas class for the diffing algorithm and DiffAlgoDisplay is
+  responsible for representation. The separation makes it possible to use one
+  display for all diffing algorithm and vice versa.
+ */
+class DiffAlgoDisplay
+{
+  public:
+
+    /**
+      Is called on the start of the diff.
+     */
+    virtual void begin() = 0;
+
+    /**
+      Is called on the end of the diff.
+     */
+    virtual void end() = 0;
+
+    /**
+      Sets the title of the left data source.
+     */
+    virtual void setLeftSourceTitle( const TQString &title ) = 0;
+
+    /**
+      Sets the title of the right data source.
+     */
+    virtual void setRightSourceTitle( const TQString &title ) = 0;
+
+    /**
+      Adds a field which is only available in the left data source.
+     */
+    virtual void additionalLeftField( const TQString &id, const TQString &value ) = 0;
+
+    /**
+      Adds a field which is only available in the right data source.
+     */
+    virtual void additionalRightField( const TQString &id, const TQString &value ) = 0;
+
+    /**
+      Adds a conflict between two fields.
+     */
+    virtual void conflictField( const TQString &id, const TQString &leftValue,
+                                const TQString &rightValue ) = 0;
+};
+
+
+class KDE_EXPORT DiffAlgo
+{
+  public:
+    /**
+      Destructor.
+     */
+    virtual ~DiffAlgo() {}
+
+    /**
+      Starts the diffing algorithm.
+     */
+    virtual void run() = 0;
+
+    /**
+      Must be called on the start of the diff.
+     */
+    void begin();
+
+    /**
+      Must be called on the end of the diff.
+     */
+    void end();
+
+    /**
+      Sets the title of the left data source.
+     */
+    void setLeftSourceTitle( const TQString &title );
+
+    /**
+      Sets the title of the right data source.
+     */
+    void setRightSourceTitle( const TQString &title );
+
+    /**
+      Adds a field which is only available in the left data source.
+     */
+    void additionalLeftField( const TQString &id, const TQString &value );
+
+    /**
+      Adds a field which is only available in the right data source.
+     */
+    void additionalRightField( const TQString &id, const TQString &value );
+
+    /**
+      Adds a conflict between two fields.
+     */
+    void conflictField( const TQString &id, const TQString &leftValue,
+                        const TQString &rightValue );
+
+    void addDisplay( DiffAlgoDisplay *display );
+    void removeDisplay( DiffAlgoDisplay *display );
+
+
+  private:
+    TQValueList<DiffAlgoDisplay*> mDisplays;
+};
+
+}
+
+#endif