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/*
* Copyright 2020 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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/>.
*/
/**
* \file
* HTML Box tree normalise interface.
*
* A box tree is "normalized" if the following is satisfied:
* \code
* parent permitted child nodes
* BLOCK, INLINE_BLOCK BLOCK, INLINE_CONTAINER, TABLE
* INLINE_CONTAINER INLINE, INLINE_BLOCK, FLOAT_LEFT, FLOAT_RIGHT, BR, TEXT,
* INLINE_END
* INLINE none
* TABLE at least 1 TABLE_ROW_GROUP
* TABLE_ROW_GROUP at least 1 TABLE_ROW
* TABLE_ROW at least 1 TABLE_CELL
* TABLE_CELL BLOCK, INLINE_CONTAINER, TABLE (same as BLOCK)
* FLOAT_(LEFT|RIGHT) exactly 1 BLOCK or TABLE
* \endcode
*
*/
#ifndef NETSURF_HTML_BOX_NORMALISE_H
#define NETSURF_HTML_BOX_NORMALISE_H
/**
* Ensure the box tree is correctly nested by adding and removing nodes.
*
* \param block box of type BLOCK, INLINE_BLOCK, or TABLE_CELL
* \param root root box of document
* \param c content of boxes
* \return true on success, false on memory exhaustion
*
* The tree is modified to satisfy the following:
* \code
* parent permitted child nodes
* BLOCK, INLINE_BLOCK BLOCK, INLINE_CONTAINER, TABLE
* INLINE_CONTAINER INLINE, INLINE_BLOCK, FLOAT_LEFT, FLOAT_RIGHT, BR, TEXT
* INLINE, TEXT none
* TABLE at least 1 TABLE_ROW_GROUP
* TABLE_ROW_GROUP at least 1 TABLE_ROW
* TABLE_ROW at least 1 TABLE_CELL
* TABLE_CELL BLOCK, INLINE_CONTAINER, TABLE (same as BLOCK)
* FLOAT_(LEFT|RIGHT) exactly 1 BLOCK or TABLE
* \endcode
*/
bool box_normalise_block(struct box *block, const struct box *root, struct html_content *c);
#endif
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