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57 lines
2.6 KiB
C++
57 lines
2.6 KiB
C++
// Copyright 2008, Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// This file contains the declarations of the GetRootFeature(),
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// VisitFeatureHierarchy() functions and FeatureVisitor base class.
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#ifndef KML_ENGINE_FEATURE_VISITOR_H__
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#define KML_ENGINE_FEATURE_VISITOR_H__
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#include "kml/dom.h"
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namespace kmlengine {
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// This returns the root Feature of the given KML hierarchy. If root is
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// neither of Type_Kml nor Type_Feature NULL is returned.
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const kmldom::FeaturePtr GetRootFeature(const kmldom::ElementPtr& root);
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// This is the base class for use with VisitFeatureHierarchy. Derive your own
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// class and implement VisitFeature and pass the instance of your class to
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// VisitFeatureHierarchy
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class FeatureVisitor {
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public:
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virtual ~FeatureVisitor() {}
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virtual void VisitFeature(const kmldom::FeaturePtr& feature) {}
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};
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// Visit the Feature hierarchy rooted at feature calling the VisitFeature()
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// method of the given FeatureVisitor in depth-first order.
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void VisitFeatureHierarchy(const kmldom::FeaturePtr& feature,
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FeatureVisitor& feature_visitor);
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} // end namespace kmlengine
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#endif // KML_ENGINE_FEATURE_VISITOR_H__
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