// document_scroll_cb is called when the document is scrolled, and updates
// the main processes knowledge of the document.
static void
document_scroll_cb(WebKitDOMEventTarget *target,
WebKitDOMEvent *event,
gpointer user_data)
{
Exten *exten = user_data;
WebKitDOMDocument *dom = WEBKIT_DOM_DOCUMENT(target);
WebKitDOMElement *e = NULL;
if(dom != NULL) {
e = WEBKIT_DOM_ELEMENT(webkit_dom_document_get_body(dom));
}
// Check for current scroll position. If it has changed, signal DBus.
if(e != NULL) {
glong top = webkit_dom_element_get_scroll_top(e);
glong height = webkit_dom_element_get_scroll_height(e);
if(top != exten->last_top || height != exten->last_height) {
exten->last_top = top;
exten->last_height = height;
vertical_position_changed(exten->page_id, top, height, exten);
}
}
if(dom != NULL) {
e = webkit_dom_document_get_active_element(dom);
}
}
// active_element_change_cb is called when the active element is changed, and
// updates bookkeeping and the main process.
static void
active_element_change_cb(WebKitDOMEventTarget *target,
WebKitDOMEvent *event,
gpointer user_data)
{
Exten *exten = user_data;
WebKitDOMDocument *document;
if(WEBKIT_DOM_IS_DOCUMENT(target)) {
document = WEBKIT_DOM_DOCUMENT(target);
} else {
// target is a window.
g_object_get(target, "document", &document, NULL);
}
WebKitDOMElement *active = webkit_dom_document_get_active_element(document);
if(active == NULL || active == exten->active) {
return;
}
if(WEBKIT_DOM_IS_HTML_IFRAME_ELEMENT(active)) {
// The iframe document handles this, unless it isn't registered yet.
// In this case, register it and call recursively.
WebKitDOMDocument *doc =
webkit_dom_html_iframe_element_get_content_document(
WEBKIT_DOM_HTML_IFRAME_ELEMENT(active));
if(!g_hash_table_contains(exten->registered_documents, doc)) {
frame_document_loaded(doc, exten);
active_element_change_cb(
WEBKIT_DOM_EVENT_TARGET(doc),
NULL,
exten);
}
return;
}
exten->active = active;
exten->scroll_target = get_scroll_target(active);
// Check whether the currently active element is an input element.
// If this has changed, signal DBus.
//
// Input elements:
//
// WebKitDOMHTMLAppletElement
// WebKitDOMHTMLEmbedElement
// WebKitDOMHTMLInputElement
// WebKitDOMHTMLTextAreaElement
gboolean input_focus = (
WEBKIT_DOM_IS_HTML_APPLET_ELEMENT(active) ||
WEBKIT_DOM_IS_HTML_EMBED_ELEMENT(active) ||
WEBKIT_DOM_IS_HTML_INPUT_ELEMENT(active) ||
WEBKIT_DOM_IS_HTML_TEXT_AREA_ELEMENT(active));
if(input_focus != exten->last_input_focus) {
exten->last_input_focus = input_focus;
input_focus_changed(
exten->page_id,
input_focus,
exten);
}
}
/**
* Callback called if a editable element changes it focus state.
* Event target may be a WebKitDOMDocument (in case of iframe) or a
* WebKitDOMDOMWindow.
*/
static void on_editable_change_focus(WebKitDOMEventTarget *target,
WebKitDOMEvent *event, WebKitWebPage *page)
{
WebKitDOMDocument *doc;
WebKitDOMDOMWindow *dom_window;
WebKitDOMElement *active;
GVariant *variant;
char *message;
if (WEBKIT_DOM_IS_DOM_WINDOW(target)) {
g_object_get(target, "document", &doc, NULL);
} else {
/* target is a doc document */
doc = WEBKIT_DOM_DOCUMENT(target);
}
dom_window = webkit_dom_document_get_default_view(doc);
if (!dom_window) {
return;
}
active = webkit_dom_document_get_active_element(doc);
/* Don't do anything if there is no active element */
if (!active) {
return;
}
if (WEBKIT_DOM_IS_HTML_IFRAME_ELEMENT(active)) {
WebKitDOMHTMLIFrameElement *iframe;
WebKitDOMDocument *subdoc;
iframe = WEBKIT_DOM_HTML_IFRAME_ELEMENT(active);
subdoc = webkit_dom_html_iframe_element_get_content_document(iframe);
add_onload_event_observers(subdoc, page);
return;
}
/* Check if the active element is an editable element. */
variant = g_variant_new("(tb)", webkit_web_page_get_id(page),
ext_dom_is_editable(active));
message = g_variant_print(variant, FALSE);
g_variant_unref(variant);
if (!webkit_dom_dom_window_webkit_message_handlers_post_message(dom_window, "focus", message)) {
g_warning("Error sending focus message");
}
g_free(message);
g_object_unref(dom_window);
}
