diff options
Diffstat (limited to 'src/html/html_select_element.c')
| -rw-r--r-- | src/html/html_select_element.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/src/html/html_select_element.c b/src/html/html_select_element.c new file mode 100644 index 0000000..f4e54cb --- /dev/null +++ b/src/html/html_select_element.c @@ -0,0 +1,344 @@ +/* + * 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 "html/html_select_element.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_SELECT_ELEMENT + }, + DOM_HTML_SELECT_ELEMENT_PROTECT_VTABLE +}; + +static bool is_option(struct dom_node_internal *node); +/** + * Create a dom_html_select_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_select_element_create(struct dom_document *doc, + struct dom_html_select_element **ele) +{ + *ele = _dom_document_alloc(doc, NULL, sizeof(dom_html_select_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_select_element_initialise(doc, *ele); +} + +/** + * Initialise a dom_html_select_element object + * + * \param doc The document object + * \param ele The dom_html_select_element object + * \return DOM_NO_ERR on success, appropriate dom_exception on failure. + */ +dom_exception _dom_html_select_element_initialise(struct dom_document *doc, + struct dom_html_select_element *ele) +{ + const char *str = "SELECT"; + lwc_string *name = NULL; + dom_exception err; + + err = _dom_document_create_lwcstring(doc, (const uint8_t *) str, SLEN(str), + &name); + if (err != DOM_NO_ERR) + return err; + + err = _dom_html_element_initialise(doc, &ele->base, name, NULL, NULL); + _dom_document_unref_lwcstring(doc, name); + + ele->selected = -1; + ele->options = NULL; + + return err; +} + +/** + * Finalise a dom_html_select_element object + * + * \param doc The document object + * \param ele The dom_html_select_element object + */ +void _dom_html_select_element_finalise(struct dom_document *doc, + struct dom_html_select_element *ele) +{ + _dom_html_element_finalise(doc, &ele->base); +} + +/** + * Destroy a dom_html_select_element object + * + * \param doc The document object + * \param ele The dom_html_select_element object + */ +void _dom_html_select_element_destroy(struct dom_document *doc, + struct dom_html_select_element *ele) +{ + _dom_html_select_element_finalise(doc, ele); + _dom_document_alloc(doc, ele, 0); +} + +/*------------------------------------------------------------------------*/ +/* The protected virtual functions */ + +/* The virtual function used to parse attribute value, see src/core/element.c + * for detail */ +dom_exception _dom_html_select_element_parse_attribute(dom_element *ele, + struct dom_string *name, struct dom_string *value, + struct 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_select_element_destroy(dom_node_internal *node) +{ + struct dom_document *doc = dom_node_get_owner(node); + _dom_html_select_element_destroy(doc, (struct dom_html_select_element *) node); +} + +/* The virtual allocation function, see src/core/node.c for detail */ +dom_exception _dom_html_select_element_alloc(struct dom_document *doc, + struct dom_node_internal *n, struct dom_node_internal **ret) +{ + UNUSED(n); + + *ret = _dom_document_alloc(doc, NULL, sizeof(dom_html_select_element)); + if (*ret == NULL) + return DOM_NO_MEM_ERR; + + return DOM_NO_ERR; +} + +/* The virtual copy function, see src/core/node.c for detail */ +dom_exception _dom_html_select_element_copy(struct dom_node_internal *new, + struct dom_node_internal *old) +{ + return _dom_html_element_copy(new, old); +} + +/*-----------------------------------------------------------------------*/ +/* Public APIs */ + +/** + * Get the ordinal index of the selected option + * + * \param ele The element object + * \param index The returned index + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_get_selected_index( + dom_html_select_element *ele, unsigned long *index) +{ + *index = ele->selected; + + return DOM_NO_ERR; +} + +/** + * Set the ordinal index of the selected option + * + * \param ele The element object + * \param index The new index + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_set_selected_index( + dom_html_select_element *ele, unsigned long index) +{ + ele->selected = index; + + return DOM_NO_ERR; +} + +/** + * Get the number of options in this select element + * + * \param ele The element object + * \param len The returned len + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_get_length( + dom_html_select_element *ele, unsigned long *len) +{ + dom_exception err; + dom_document *doc = dom_node_get_owner(ele); + assert(doc != NULL); + + if (ele->options == NULL) { + err = _dom_html_options_collection_create(doc, + (dom_node_internal *) ele, + is_option, &ele->options); + if (err != DOM_NO_ERR) + return err; + } + + return dom_html_options_collection_get_length(ele->options, len); +} + +/** + * Set the number of options in this select element + * + * \param ele The element object + * \param len The new len + * \return DOM_NOT_SUPPORTED_ERR. + * + * todo: how to deal with set the len of the children option objects? + */ +dom_exception dom_html_select_element_set_length( + dom_html_select_element *ele, unsigned long len) +{ + UNUSED(ele); + UNUSED(len); + + return DOM_NOT_SUPPORTED_ERR; +} + +/** + * The collection of OPTION elements of this element + * + * \param ele The element object + * \param col THe returned collection object + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_get_options( + dom_html_select_element *ele, + struct dom_html_options_collection **col) +{ + dom_exception err; + dom_document *doc = dom_node_get_owner(ele); + assert(doc != NULL); + + if (ele->options == NULL) { + err = _dom_html_options_collection_create(doc, + (dom_node_internal *) ele, + is_option, &ele->options); + if (err != DOM_NO_ERR) + return err; + + *col = ele->options; + return DOM_NO_ERR; + } + + dom_html_options_collection_ref(ele->options); + *col = ele->options; + + return DOM_NO_ERR; +} + +/** + * Whether this element is disabled + * + * \param ele The element object + * \param disabled The returned status + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_get_disabled( + dom_html_select_element *ele, bool *disabled) +{ + return dom_html_element_get_bool_property(&ele->base, + "disabled", SLEN("disabled"), disabled); +} + +/** + * Set the disabled status of this element + * + * \param ele The element object + * \param disabled The disabled status + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_set_disabled( + dom_html_select_element *ele, bool disabled) +{ + return dom_html_element_set_bool_property(&ele->base, + "disabled", SLEN("disabled"), disabled); +} + +/** + * Whether this element can be multiple selected + * + * \param ele The element object + * \param multiple The returned status + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_get_multiple( + dom_html_select_element *ele, bool *multiple) +{ + return dom_html_element_get_bool_property(&ele->base, + "multiple", SLEN("multiple"), multiple); +} + +/** + * Set whether this element can be multiple selected + * + * \param ele The element object + * \param multiple The status + * \return DOM_NO_ERR on success. + */ +dom_exception dom_html_select_element_set_multiple( + dom_html_select_element *ele, bool multiple) +{ + return dom_html_element_set_bool_property(&ele->base, + "multiple", SLEN("multiple"), multiple); +} + +dom_exception dom_html_select_element_get_size( + dom_html_select_element *ele, unsigned long *size); +dom_exception dom_html_select_element_set_size( + dom_html_select_element *ele, unsigned long size); +dom_exception dom_html_select_element_get_tab_index( + dom_html_select_element *ele, unsigned long *tab_index); +dom_exception dom_html_select_element_set_tab_index( + dom_html_select_element *ele, unsigned long tab_index); + +/* Functions */ +dom_exception dom_html_select_element_add(struct dom_html_element *ele, + struct dom_html_element *before); +dom_exception dom_html_element_blur(struct dom_html_select_element *ele); +dom_exception dom_html_element_focus(struct dom_html_select_element *ele); + + +/*-----------------------------------------------------------------------*/ +/* Helper functions */ + +/* Test whether certain node is an option node */ +bool is_option(struct dom_node_internal *node) +{ + lwc_string *name = NULL; + bool ret = false; + dom_exception err; + + err = _dom_node_create_lwcstring(node, (const uint8_t *) "OPTION", + SLEN("OPTION"), &name); + assert(err == DOM_NO_ERR); + + if (name == node->name) + ret = true; + + _dom_node_unref_intern_string(node, name); + + return ret; +} |