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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2013 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 "main.h"
#include "dom.h"
extern VbCore vb;
static gboolean dom_auto_insert(Element *element);
static gboolean dom_editable_focus_cb(Element *element, Event *event);
static Element *dom_get_active_element(Document *doc);
void dom_check_auto_insert(void)
{
Document *doc = webkit_web_view_get_dom_document(vb.gui.webview);
Element *active = dom_get_active_element(doc);
/* the focus was not set automatically - add event listener to track focus
* events on the document */
if (!dom_auto_insert(active)) {
HtmlElement *element = webkit_dom_document_get_body(doc);
if (!element) {
element = WEBKIT_DOM_HTML_ELEMENT(webkit_dom_document_get_document_element(doc));
}
webkit_dom_event_target_add_event_listener(
WEBKIT_DOM_EVENT_TARGET(element), "focus", G_CALLBACK(dom_editable_focus_cb), true, NULL
);
}
}
/**
* Remove focus from active and editable elements.
*/
void dom_clear_focus(void)
{
Document *doc = webkit_web_view_get_dom_document(vb.gui.webview);
Element *active = dom_get_active_element(doc);
if (active) {
webkit_dom_element_blur(active);
}
}
/**
* Indicates if the given dom element is an editable element like text input,
* password or textarea.
*/
gboolean dom_is_editable(Element *element)
{
gboolean result = FALSE;
if (!element) {
return result;
}
char *tagname = webkit_dom_element_get_tag_name(element);
char *type = webkit_dom_element_get_attribute(element, "type");
if (!g_ascii_strcasecmp(tagname, "textarea")) {
result = TRUE;
} else if (!g_ascii_strcasecmp(tagname, "input")
&& g_ascii_strcasecmp(type, "submit")
&& g_ascii_strcasecmp(type, "reset")
&& g_ascii_strcasecmp(type, "image")
) {
result = TRUE;
} else {
result = FALSE;
}
g_free(tagname);
g_free(type);
return result;
}
static gboolean dom_auto_insert(Element *element)
{
if (dom_is_editable(element)) {
vb_set_mode(VB_MODE_INSERT, FALSE);
return TRUE;
}
return FALSE;
}
static gboolean dom_editable_focus_cb(Element *element, Event *event)
{
webkit_dom_event_target_remove_event_listener(
WEBKIT_DOM_EVENT_TARGET(element), "focus", G_CALLBACK(dom_editable_focus_cb), true
);
if (CLEAN_MODE(vb.state.mode) != VB_MODE_INSERT) {
EventTarget *target = webkit_dom_event_get_target(event);
dom_auto_insert((void*)target);
}
return FALSE;
}
static Element *dom_get_active_element(Document *doc)
{
Document *d = NULL;
Element *active = webkit_dom_html_document_get_active_element((void*)doc);
char *tagname = webkit_dom_element_get_tag_name(active);
Element *result = NULL;
if (!g_strcmp0(tagname, "FRAME")) {
d = webkit_dom_html_frame_element_get_content_document(WEBKIT_DOM_HTML_FRAME_ELEMENT(active));
result = dom_get_active_element(d);
} else if (!g_strcmp0(tagname, "IFRAME")) {
d = webkit_dom_html_iframe_element_get_content_document(WEBKIT_DOM_HTML_IFRAME_ELEMENT(active));
result = dom_get_active_element(d);
}
g_free(tagname);
if (result) {
g_free(active);
return result;
}
return active;
}
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