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/*
* 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.com>
*/
#include <assert.h>
#include <stdlib.h>
#include "html/html_document.h"
#include "html/html_element.h"
#include "core/node.h"
#include "core/attr.h"
#include "core/document.h"
#include "utils/utils.h"
struct dom_html_element_vtable _dom_html_element_vtable = {
{
{
{
DOM_NODE_EVENT_TARGET_VTABLE
},
DOM_NODE_VTABLE_ELEMENT,
},
DOM_ELEMENT_VTABLE
},
DOM_HTML_ELEMENT_VTABLE
};
static struct dom_element_protected_vtable _dom_html_element_protect_vtable = {
{
DOM_HTML_ELEMENT_PROTECT_VTABLE
},
DOM_ELEMENT_PROTECT_VTABLE
};
dom_exception _dom_html_element_create(struct dom_html_document *doc,
dom_string *name, dom_string *namespace,
dom_string *prefix, struct dom_html_element **result)
{
dom_exception error;
dom_html_element *el;
el = malloc(sizeof(struct dom_html_element));
if (el == NULL)
return DOM_NO_MEM_ERR;
el->base.base.base.vtable = &_dom_html_element_vtable;
el->base.base.vtable = &_dom_html_element_protect_vtable;
error = _dom_html_element_initialise(doc, el, name, namespace,
prefix);
if (error != DOM_NO_ERR) {
free(el);
return error;
}
*result = el;
return DOM_NO_ERR;
}
dom_exception _dom_html_element_initialise(struct dom_html_document *doc,
struct dom_html_element *el, dom_string *name,
dom_string *namespace, dom_string *prefix)
{
dom_exception err;
err = _dom_element_initialise(&doc->base, &el->base, name, namespace, prefix);
if (err != DOM_NO_ERR)
return err;
return err;
}
void _dom_html_element_finalise(struct dom_html_element *ele)
{
_dom_element_finalise(&ele->base);
}
/*------------------------------------------------------------------------*/
/* The protected virtual functions */
/* The virtual destroy function, see src/core/node.c for detail */
void _dom_html_element_destroy(dom_node_internal *node)
{
dom_html_element *html = (dom_html_element *) node;
_dom_html_element_finalise(html);
free(html);
}
/* The virtual copy function, see src/core/node.c for detail */
dom_exception _dom_html_element_copy(dom_node_internal *old,
dom_node_internal **copy)
{
return _dom_element_copy(old, copy);
}
/*-----------------------------------------------------------------------*/
/* API functions */
#define SIMPLE_GET_SET(fattr,attr) \
dom_exception _dom_html_element_get_##fattr(dom_html_element *element, \
dom_string **fattr) \
{ \
dom_exception ret; \
dom_string *_memo_##attr; \
\
_memo_##attr = \
((struct dom_html_document *) \
((struct dom_node_internal *)element)->owner)->memoised[hds_##attr]; \
\
ret = dom_element_get_attribute(element, _memo_##attr, fattr); \
\
return ret; \
} \
\
dom_exception _dom_html_element_set_##fattr(dom_html_element *element, \
dom_string *fattr) \
{ \
dom_exception ret; \
dom_string *_memo_##attr; \
\
_memo_##attr = \
((struct dom_html_document *) \
((struct dom_node_internal *)element)->owner)->memoised[hds_##attr]; \
\
ret = dom_element_set_attribute(element, _memo_##attr, fattr); \
\
return ret; \
}
SIMPLE_GET_SET(id,id)
SIMPLE_GET_SET(title,title)
SIMPLE_GET_SET(lang,lang)
SIMPLE_GET_SET(dir,dir)
SIMPLE_GET_SET(class_name,class)
/*-----------------------------------------------------------------------*/
/* Common functions */
/**
* Get the a bool property
*
* \param ele The dom_html_element object
* \param name The name of the attribute
* \param len The length of ::name
* \param has The returned status
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_element_get_bool_property(dom_html_element *ele,
const char *name, unsigned long len, bool *has)
{
dom_string *str = NULL;
dom_attr *a = NULL;
dom_exception err;
err = dom_string_create((const uint8_t *) name, len, &str);
if (err != DOM_NO_ERR)
goto fail;
err = dom_element_get_attribute_node(ele, str, &a);
if (err != DOM_NO_ERR)
goto cleanup1;
if (a != NULL) {
*has = true;
} else {
*has = false;
}
dom_node_unref(a);
cleanup1:
dom_string_unref(str);
fail:
return err;
}
/**
* Set a bool property
*
* \param ele The dom_html_element object
* \param name The name of the attribute
* \param len The length of ::name
* \param has The status
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_element_set_bool_property(dom_html_element *ele,
const char *name, unsigned long len, bool has)
{
dom_string *str = NULL;
dom_attr *a = NULL;
dom_exception err;
err = dom_string_create((const uint8_t *) name, len, &str);
if (err != DOM_NO_ERR)
goto fail;
err = dom_element_get_attribute_node(ele, str, &a);
if (err != DOM_NO_ERR)
goto cleanup1;
if (a != NULL && has == false) {
dom_attr *res = NULL;
err = dom_element_remove_attribute_node(ele, a, &res);
if (err != DOM_NO_ERR)
goto cleanup2;
dom_node_unref(res);
} else if (a == NULL && has == true) {
dom_document *doc = dom_node_get_owner(ele);
dom_attr *res = NULL;
err = _dom_attr_create(doc, str, NULL, NULL, true, &a);
if (err != DOM_NO_ERR) {
goto cleanup1;
}
err = dom_element_set_attribute_node(ele, a, &res);
if (err != DOM_NO_ERR)
goto cleanup2;
dom_node_unref(res);
}
cleanup2:
dom_node_unref(a);
cleanup1:
dom_string_unref(str);
fail:
return err;
}
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