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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2018 Daniel Carl
*
* This program 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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/.
*/
#include <glib.h>
#include <webkitdom/webkitdom.h>
#include "ext-main.h"
#include "ext-dom.h"
static gboolean is_element_visible(WebKitDOMHTMLElement *element);
/**
* Checks if given dom element is an editable element.
*/
gboolean ext_dom_is_editable(WebKitDOMElement *element)
{
char *type;
gboolean result = FALSE;
if (!element) {
return FALSE;
}
/* element is editable if it's a text area or input with no type, text or
* password */
if (webkit_dom_html_element_get_is_content_editable(WEBKIT_DOM_HTML_ELEMENT(element))
|| WEBKIT_DOM_IS_HTML_TEXT_AREA_ELEMENT(element)) {
return TRUE;
}
if (WEBKIT_DOM_IS_HTML_INPUT_ELEMENT(element)) {
type = webkit_dom_html_input_element_get_input_type(WEBKIT_DOM_HTML_INPUT_ELEMENT(element));
/* Input element without type attribute are rendered and behave like
* type = text and there are a lot of pages in the wild using input
* field without type attribute. */
if (!*type
|| !g_ascii_strcasecmp(type, "text")
|| !g_ascii_strcasecmp(type, "password")
|| !g_ascii_strcasecmp(type, "color")
|| !g_ascii_strcasecmp(type, "date")
|| !g_ascii_strcasecmp(type, "datetime")
|| !g_ascii_strcasecmp(type, "datetime-local")
|| !g_ascii_strcasecmp(type, "email")
|| !g_ascii_strcasecmp(type, "month")
|| !g_ascii_strcasecmp(type, "number")
|| !g_ascii_strcasecmp(type, "search")
|| !g_ascii_strcasecmp(type, "tel")
|| !g_ascii_strcasecmp(type, "time")
|| !g_ascii_strcasecmp(type, "url")
|| !g_ascii_strcasecmp(type, "week"))
{
result = TRUE;
}
g_free(type);
}
return result;
}
/**
* Find the first editable element and set the focus on it and enter input
* mode.
* Returns true if there was an editable element focused.
*/
gboolean ext_dom_focus_input(WebKitDOMDocument *doc)
{
WebKitDOMNode *html, *node;
WebKitDOMHTMLCollection *collection;
WebKitDOMXPathNSResolver *resolver;
WebKitDOMXPathResult* result;
WebKitDOMDocument *frame_doc;
guint i, len;
collection = webkit_dom_document_get_elements_by_tag_name_as_html_collection(doc, "html");
if (!collection) {
return FALSE;
}
html = webkit_dom_html_collection_item(collection, 0);
g_object_unref(collection);
resolver = webkit_dom_document_create_ns_resolver(doc, html);
if (!resolver) {
return FALSE;
}
/* Use translate to match xpath expression case insensitive so that also
* intput filed of type="TEXT" are matched. */
result = webkit_dom_document_evaluate(
doc, "//input[not(@type) "
"or translate(@type,'ETX','etx')='text' "
"or translate(@type,'ADOPRSW','adoprsw')='password' "
"or translate(@type,'CLOR','clor')='color' "
"or translate(@type,'ADET','adet')='date' "
"or translate(@type,'ADEIMT','adeimt')='datetime' "
"or translate(@type,'ACDEILMOT','acdeilmot')='datetime-local' "
"or translate(@type,'AEILM','aeilm')='email' "
"or translate(@type,'HMNOT','hmnot')='month' "
"or translate(@type,'BEMNRU','bemnru')='number' "
"or translate(@type,'ACEHRS','acehrs')='search' "
"or translate(@type,'ELT','elt')='tel' "
"or translate(@type,'EIMT','eimt')='time' "
"or translate(@type,'LRU','lru')='url' "
"or translate(@type,'EKW','ekw')='week' "
"]|//textarea",
html, resolver, 5, NULL, NULL
);
if (!result) {
return FALSE;
}
while ((node = webkit_dom_xpath_result_iterate_next(result, NULL))) {
if (is_element_visible(WEBKIT_DOM_HTML_ELEMENT(node))) {
webkit_dom_element_focus(WEBKIT_DOM_ELEMENT(node));
return TRUE;
}
}
/* Look for editable elements in frames too. */
collection = webkit_dom_document_get_elements_by_tag_name_as_html_collection(doc, "iframe");
len = webkit_dom_html_collection_get_length(collection);
for (i = 0; i < len; i++) {
node = webkit_dom_html_collection_item(collection, i);
frame_doc = webkit_dom_html_iframe_element_get_content_document(WEBKIT_DOM_HTML_IFRAME_ELEMENT(node));
/* Stop on first frame with focused element. */
if (ext_dom_focus_input(frame_doc)) {
g_object_unref(collection);
return TRUE;
}
}
g_object_unref(collection);
return FALSE;
}
/**
* Retrieves the content of given editable element.
* Not that the returned value must be freed.
*/
char *ext_dom_editable_get_value(WebKitDOMElement *element)
{
char *value = NULL;
if ((webkit_dom_html_element_get_is_content_editable(WEBKIT_DOM_HTML_ELEMENT(element)))) {
value = webkit_dom_html_element_get_inner_text(WEBKIT_DOM_HTML_ELEMENT(element));
} else if (WEBKIT_DOM_IS_HTML_INPUT_ELEMENT(WEBKIT_DOM_HTML_INPUT_ELEMENT(element))) {
value = webkit_dom_html_input_element_get_value(WEBKIT_DOM_HTML_INPUT_ELEMENT(element));
} else {
value = webkit_dom_html_text_area_element_get_value(WEBKIT_DOM_HTML_TEXT_AREA_ELEMENT(element));
}
return value;
}
/**
* Indicates if the give nelement is visible.
*/
static gboolean is_element_visible(WebKitDOMHTMLElement *element)
{
return TRUE;
}
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