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/*
* Copyright (C) 2021 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2021 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugin-fw
* Created on: 10 апр. 2021 г.
*
* lsp-plugin-fw is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-plugin-fw 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-plugin-fw. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_UI_XML_NODE_H_
#define PRIVATE_UI_XML_NODE_H_
#include <lsp-plug.in/common/status.h>
#include <lsp-plug.in/runtime/LSPString.h>
#include <lsp-plug.in/plug-fw/ui.h>
namespace lsp
{
namespace ui
{
namespace xml
{
/**
* XML node handler
*/
class Node
{
private:
Node & operator = (const Node &);
Node(const Node &);
protected:
UIContext *pContext;
Node *pParent;
public:
explicit Node(UIContext *ctx, Node *parent);
virtual ~Node();
public:
/**
* Get pointer to the UI context
* @return pointer to the UI context
*/
inline UIContext *context() { return pContext; }
/**
* Get pointer to the parent node
* @return pointer to the parent node
*/
inline Node *parent() { return pParent; }
public:
/**
* Lookup for child node
* @param child pointer to store child node, should be NULL if handler not created
* @param name node name
* @return error if node was not found
*/
virtual status_t lookup(Node **child, const LSPString *name);
/** Called when XML handler is set
*
*/
virtual status_t enter(const LSPString * const *atts);
/** Call on tag open
*
* @param child pointer to pass child node handler if necessary
* @param name tag name
* @param atts NULL-terminated list of attributes
* @return handler of tag sub-structure or NULL
*/
virtual status_t start_element(const LSPString *name, const LSPString * const *atts);
/** Call on tag close
*
* @param name tag name
*/
virtual status_t end_element(const LSPString *name);
/** Called by child on leave() event
*
* @param child child that has been fully parsed
*/
virtual status_t completed(Node *child);
/** Called when there will be no more data
*
*/
virtual status_t leave();
};
}
}
}
#endif /* PRIVATE_UI_XML_NODE_H_ */
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