1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
* 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_form_element.h"
#include "html/html_collection.h"
#include "core/node.h"
#include "core/document.h"
#include "utils/utils.h"
static struct dom_element_protected_vtable _protect_vtable = {
{
DOM_NODE_PROTECT_VTABLE_HTML_FORM_ELEMENT
},
DOM_HTML_FORM_ELEMENT_PROTECT_VTABLE
};
static bool _dom_is_form_control(struct dom_node_internal *node);
/**
* Create a dom_html_form_element object
*
* \param doc The document object
* \param ele The returned element object
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception _dom_html_form_element_create(struct dom_document *doc,
struct dom_html_form_element **ele)
{
*ele = malloc(sizeof(dom_html_form_element));
if (*ele == NULL)
return DOM_NO_MEM_ERR;
/* Set up vtables */
struct dom_node_internal *node = (struct dom_node_internal *) *ele;
node->base.vtable = &_dom_element_vtable;
node->vtable = &_protect_vtable;
return _dom_html_form_element_initialise(doc, *ele);
}
/**
* Initialise a dom_html_form_element object
*
* \param doc The document object
* \param ele The dom_html_form_element object
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception _dom_html_form_element_initialise(struct dom_document *doc,
struct dom_html_form_element *ele)
{
dom_string *name = NULL;
dom_exception err;
err = dom_string_create((const uint8_t *) "FORM", SLEN("FORM"), &name);
if (err != DOM_NO_ERR)
return err;
err = _dom_html_element_initialise(doc, &ele->base, name, NULL, NULL);
dom_string_unref(name);
ele->col = NULL;
return err;
}
/**
* Finalise a dom_html_form_element object
*
* \param ele The dom_html_form_element object
*/
void _dom_html_form_element_finalise(struct dom_html_form_element *ele)
{
_dom_html_element_finalise(&ele->base);
}
/**
* Destroy a dom_html_form_element object
*
* \param ele The dom_html_form_element object
*/
void _dom_html_form_element_destroy(struct dom_html_form_element *ele)
{
_dom_html_form_element_finalise(ele);
free(ele);
}
/*------------------------------------------------------------------------*/
/* The protected virtual functions */
/* The virtual function used to parse attribute value, see src/core/element.c
* for detail */
dom_exception _dom_html_form_element_parse_attribute(dom_element *ele,
dom_string *name, dom_string *value,
dom_string **parsed)
{
UNUSED(ele);
UNUSED(name);
dom_string_ref(value);
*parsed = value;
return DOM_NO_ERR;
}
/* The virtual destroy function, see src/core/node.c for detail */
void _dom_virtual_html_form_element_destroy(dom_node_internal *node)
{
_dom_html_form_element_destroy((struct dom_html_form_element *) node);
}
/* The virtual copy function, see src/core/node.c for detail */
dom_exception _dom_html_form_element_copy(dom_node_internal *old,
dom_node_internal **copy)
{
return _dom_html_element_copy(old, copy);
}
/*-----------------------------------------------------------------------*/
/* Public APIs */
/**
* Get the form controls under this form element
*
* \param ele The form object
* \param col The collection of form controls
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_form_element_get_elements(dom_html_form_element *ele,
struct dom_html_collection **col)
{
dom_exception err;
if (ele->col == NULL) {
dom_document *doc = dom_node_get_owner(ele);
assert(doc != NULL);
err = _dom_html_collection_create(doc,
(dom_node_internal *) ele,
_dom_is_form_control, col);
if (err != DOM_NO_ERR)
return err;
ele->col = *col;
}
*col = ele->col;
dom_html_collection_ref(*col);
return DOM_NO_ERR;
}
/**
* Get the number of form controls under this form element
*
* \param ele The form object
* \param len The number of controls
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_form_element_get_length(dom_html_form_element *ele,
unsigned long *len)
{
dom_exception err;
if (ele->col == NULL) {
dom_document *doc = dom_node_get_owner(ele);
assert(doc != NULL);
err = _dom_html_collection_create(doc,
(dom_node_internal *) ele,
_dom_is_form_control, &ele->col);
if (err != DOM_NO_ERR)
return err;
}
return dom_html_collection_get_length(ele->col, len);
}
/**
* Submit this form
*
* \param ele The form object
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_form_element_submit(dom_html_form_element *ele)
{
struct dom_document *doc = dom_node_get_owner(ele);
bool success = false;
assert(doc != NULL);
/* Dispatch an event and let the default action handler to deal with
* the submit action, and a 'submit' event is bubbling and cancelable
*/
return _dom_dispatch_generic_event(doc, (dom_event_target *) ele,
(const uint8_t *) "submit", SLEN("submit"), true,
true, &success);
}
/**
* Reset this form
*
* \param ele The form object
* \return DOM_NO_ERR on success, appropriate dom_exception on failure.
*/
dom_exception dom_html_form_element_reset(dom_html_form_element *ele)
{
struct dom_document *doc = dom_node_get_owner(ele);
bool success = false;
assert(doc != NULL);
/* Dispatch an event and let the default action handler to deal with
* the reset action, and a 'reset' event is bubbling and cancelable
*/
return _dom_dispatch_generic_event(doc, (dom_event_target *) ele,
(const uint8_t *) "reset", SLEN("reset"), true,
true, &success);
}
/*-----------------------------------------------------------------------*/
/* Internal functions */
/* Callback function to test whether certain node is a form control, see
* src/html/html_collection.h for detail. */
static bool _dom_is_form_control(struct dom_node_internal *node)
{
assert(node->type == DOM_ELEMENT_NODE);
dom_html_element *ele = (dom_html_element *) node;
return ele->form != NULL;
}
|
