/*
* This file is part of libdom.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2009 Bo Yang <struggleyb.nku@gmail.com>
*/
#include <assert.h>
#include <stdlib.h>
#include <libwapcaplet/libwapcaplet.h>
#include "html/html_options_collection.h"
#include "core/node.h"
#include "core/element.h"
#include "core/string.h"
#include "utils/utils.h"
/*-----------------------------------------------------------------------*/
/* Constructor and destructor */
/**
* Create a dom_html_options_collection
*
* \param doc The document
* \param root The root element of the collection
* \param ic The callback function used to determin whether certain node
* beint32_ts to the collection
* \param col The result collection object
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception _dom_html_options_collection_create(struct dom_html_document *doc,
struct dom_node_internal *root,
dom_callback_is_in_collection ic,
void *ctx,
struct dom_html_options_collection **col)
{
*col
= malloc(sizeof(dom_html_options_collection
)); if (*col == NULL)
return DOM_NO_MEM_ERR;
return _dom_html_options_collection_initialise(doc, *col, root,
ic, ctx);
}
/**
* Intialiase a dom_html_options_collection
*
* \param doc The document
* \param col The collection object to be initialised
* \param root The root element of the collection
* \param ic The callback function used to determin whether certain node
* beint32_ts to the collection
* \return DOM_NO_ERR on success.
*/
dom_exception _dom_html_options_collection_initialise(struct dom_html_document *doc,
struct dom_html_options_collection *col,
struct dom_node_internal *root,
dom_callback_is_in_collection ic, void *ctx)
{
return _dom_html_collection_initialise(doc, &col->base, root, ic, ctx);
}
/**
* Finalise a dom_html_options_collection object
*
* \param col The dom_html_options_collection object
*/
void _dom_html_options_collection_finalise(struct dom_html_options_collection *col)
{
_dom_html_collection_finalise(&col->base);
}
/**
* Destroy a dom_html_options_collection object
* \param col The dom_html_options_collection object
*/
void _dom_html_options_collection_destroy(struct dom_html_options_collection *col)
{
_dom_html_options_collection_finalise(col);
}
/*-----------------------------------------------------------------------*/
/* Public API */
/**
* Get the length of this dom_html_options_collection
*
* \param col The dom_html_options_collection object
* \param len The returned length of this collection
* \return DOM_NO_ERR on success.
*/
dom_exception dom_html_options_collection_get_length(dom_html_options_collection *col,
uint32_t *len)
{
return dom_html_collection_get_length(&col->base, len);
}
/**
* Set the length of this dom_html_options_collection
*
* \param col The dom_html_options_collection object
* \param len The length of this collection to be set
* \return DOM_NO_ERR on success.
*/
dom_exception dom_html_options_collection_set_length(
dom_html_options_collection *col, uint32_t len)
{
UNUSED(col);
UNUSED(len);
/* TODO: how to deal with this */
return DOM_NOT_SUPPORTED_ERR;
}
/**
* Get the node with certain index
*
* \param col The dom_html_options_collection object
* \param index The index number based on zero
* \param node The returned node object
* \return DOM_NO_ERR on success.
*/
dom_exception dom_html_options_collection_item(dom_html_options_collection *col,
uint32_t index, struct dom_node **node)
{
return dom_html_collection_item(&col->base, index, node);
}
/**
* Get the node in the collection according name
*
* \param col The collection
* \param name The name of target node
* \param node The returned node object
* \return DOM_NO_ERR on success.
*/
dom_exception dom_html_options_collection_named_item(dom_html_options_collection *col,
dom_string *name, struct dom_node **node)
{
struct dom_node_internal *n = col->base.root;
dom_string *kname;
dom_exception err;
/* Search for an element with an appropriate ID */
err = dom_html_collection_named_item(&col->base, name, node);
if (err == DOM_NO_ERR && *node != NULL)
return err;
/* Didn't find one, so consider name attribute */
err = dom_string_create_interned((const uint8_t *) "name", SLEN("name"),
&kname);
if (err != DOM_NO_ERR)
return err;
while (n != NULL) {
if (n->type == DOM_ELEMENT_NODE &&
col->base.ic(n, col->base.ctx) == true) {
dom_string *nval = NULL;
err = dom_element_get_attribute(n, kname, &nval);
if (err != DOM_NO_ERR) {
dom_string_unref(kname);
return err;
}
if (nval != NULL && dom_string_isequal(name, nval)) {
*node = (struct dom_node *) n;
dom_node_ref(n);
dom_string_unref(nval);
dom_string_unref(kname);
return DOM_NO_ERR;
}
if (nval != NULL)
dom_string_unref(nval);
}
/* Depth first iterating */
if (n->first_child != NULL) {
n = n->first_child;
} else if (n->next != NULL) {
n = n->next;
} else {
/* No children and siblings */
struct dom_node_internal *parent = n->parent;
while (parent != col->base.root &&
n == parent->last_child) {
n = parent;
parent = parent->parent;
}
if (parent == col->base.root)
n = NULL;
else
n = n->next;
}
}
dom_string_unref(kname);
/* Not found the target node */
*node = NULL;
return DOM_NO_ERR;
}
/**
* Claim a reference on this collection
*
* \pram col The collection object
*/
void dom_html_options_collection_ref(dom_html_options_collection *col)
{
if (col == NULL)
return;
col->base.refcnt ++;
}
/**
* Relese a reference on this collection
*
* \pram col The collection object
*/
void dom_html_options_collection_unref(dom_html_options_collection *col)
{
if (col == NULL)
return;
if (col->base.refcnt > 0)
col->base.refcnt --;
if (col->base.refcnt == 0)
_dom_html_options_collection_destroy(col);
}