Hi,
I'm trying to inject javascript code on each page load but it fails on the
first load every time. If I reload the page it works. How do I fix this? Is
there something I've missed in the code below?
The printfs work but the js-code does not get injected.
#include <gtk/gtk.h>
#include <webkit/webkit.h>
GtkWidget *window;
GtkWidget *webview;
static void handle_script_message(WebKitUserContentManager *manager, JSCValue*
value, gpointer user_data) {
printf("handle_script_message()%s\n", value);
}
static void web_view_load_changed(WebKitWebView *web_view, WebKitLoadEvent
load_event, gpointer user_data) {
switch(load_event) {
case
WEBKIT_LOAD_FINISHED:
printf("WEBKIT_LOAD_FINISHED %s\n", webkit_web_view_get_uri(web_view));
WebKitUserScript *script = webkit_user_script_new(
"window.test = 12345;
console.log(window.test);",
WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES,
WEBKIT_USER_SCRIPT_INJECT_AT_DOCUMENT_END,
NULL,
NULL
);
WebKitUserContentManager *manager =
webkit_web_view_get_user_content_manager(web_view);
webkit_user_content_manager_add_script(
manager,
script
);
webkit_user_script_unref(script);
printf("SCRIPTS LOADED\n");
break;
}
}
static void activate(GtkApplication* app, gpointer user_data) {
window = gtk_application_window_new (app);
gtk_window_set_title(GTK_WINDOW (window), "Webkit
Test");
gtk_window_set_default_size(GTK_WINDOW (window),
800, 600);
// Create a browser instance
webview = webkit_web_view_new();
WebKitSettings *settings =
webkit_web_view_get_settings (WEBKIT_WEB_VIEW(webview));
g_object_set(G_OBJECT(settings),
"enable-developer-extras", TRUE, NULL);
WebKitUserContentManager *manager =
webkit_web_view_get_user_content_manager(WEBKIT_WEB_VIEW(webview));
g_signal_connect(manager,
"script-message-received::testjs", G_CALLBACK(handle_script_message), NULL);
webkit_user_content_manager_register_script_message_handler(manager, "testjs",
NULL);
g_signal_connect(webview, "load-changed",
G_CALLBACK(web_view_load_changed), NULL);
webkit_web_view_load_uri(WEBKIT_WEB_VIEW(webview),
"https://mytestserver";);
gtk_window_set_child(GTK_WINDOW (window), webview);
gtk_window_present(GTK_WINDOW(window));
WebKitWebInspector *inspector =
webkit_web_view_get_inspector (WEBKIT_WEB_VIEW(webview));
webkit_web_inspector_show
(WEBKIT_WEB_INSPECTOR(inspector));
}
int main(int argc, char *argv[]) {
GtkApplication *app;
int status;
app = gtk_application_new ("my.test.app",
G_APPLICATION_DEFAULT_FLAGS);
g_signal_connect (app, "activate", G_CALLBACK
(activate), NULL);
status = g_application_run (G_APPLICATION (app),
argc, argv);
g_object_unref (app);
return status;
}
Regards, Erik
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