+#include <sys/stat.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include <gio/gio.h>
#include <webkit2/webkit-web-extension.h>
+#include <webkitdom/webkitdom.h>
+#include <webkitdom/WebKitDOMDOMWindowUnstable.h>
+
+#include "common.h"
+
+#define LENGTH(x) (sizeof(x) / sizeof(x[0]))
+
+typedef struct Page {
+ guint64 id;
+ WebKitWebPage *webpage;
+ struct Page *next;
+} Page;
+
+static int pipein, pipeout;
+static Page *pages;
+
+Page *
+newpage(WebKitWebPage *page)
+{
+ Page *p;
+
+ if (!(p = calloc(1, sizeof(Page))))
+ die("Cannot malloc!\n");
+
+ p->next = pages;
+ pages = p;
+
+ p->id = webkit_web_page_get_id(page);
+ p->webpage = page;
+
+ return p;
+}
+
+static void
+msgsurf(Page *p, const char *s)
+{
+ static char msg[MSGBUFSZ];
+ size_t sln = strlen(s);
+ int ret;
+
+ if ((ret = snprintf(msg, sizeof(msg), "%c%c%s",
+ 2 + sln, p ? p->id : 0, s))
+ >= sizeof(msg)) {
+ fprintf(stderr, "webext: message too long: %d\n", ret);
+ return;
+ }
+
+ if (pipeout && write(pipeout, msg, sizeof(msg)) < 0)
+ fprintf(stderr, "webext: error sending: %.*s\n", ret-2, msg+2);
+}
+
+static gboolean
+readpipe(GIOChannel *s, GIOCondition c, gpointer unused)
+{
+ static char msg[MSGBUFSZ], msgsz;
+ WebKitDOMDOMWindow *view;
+ GError *gerr = NULL;
+ glong wh, ww;
+ Page *p;
+
+ if (g_io_channel_read_chars(s, msg, LENGTH(msg), NULL, &gerr) !=
+ G_IO_STATUS_NORMAL) {
+ fprintf(stderr, "webext: error reading pipe: %s\n",
+ gerr->message);
+ g_error_free(gerr);
+ return TRUE;
+ }
+ if ((msgsz = msg[0]) < 3) {
+ fprintf(stderr, "webext: message too short: %d\n", msgsz);
+ return TRUE;
+ }
+
+ for (p = pages; p; p = p->next) {
+ if (p->id == msg[1])
+ break;
+ }
+ if (!p || !(view = webkit_dom_document_get_default_view(
+ webkit_web_page_get_dom_document(p->webpage))))
+ return TRUE;
+
+ switch (msg[2]) {
+ case 'h':
+ if (msgsz != 4)
+ return TRUE;
+ ww = webkit_dom_dom_window_get_inner_width(view);
+ webkit_dom_dom_window_scroll_by(view,
+ (ww / 100) * msg[3], 0);
+ break;
+ case 'v':
+ if (msgsz != 4)
+ return TRUE;
+ wh = webkit_dom_dom_window_get_inner_height(view);
+ webkit_dom_dom_window_scroll_by(view,
+ 0, (wh / 100) * msg[3]);
+ break;
+ }
+
+ return TRUE;
+}
+
+static void
+webpagecreated(WebKitWebExtension *e, WebKitWebPage *wp, gpointer unused)
+{
+ Page *p = newpage(wp);
+}
G_MODULE_EXPORT void
-webkit_web_extension_initialize(WebKitWebExtension *e)
+webkit_web_extension_initialize_with_user_data(WebKitWebExtension *e, GVariant *gv)
{
- return;
+ GIOChannel *gchanpipe;
+
+ g_signal_connect(e, "page-created", G_CALLBACK(webpagecreated), NULL);
+
+ g_variant_get(gv, "(ii)", &pipein, &pipeout);
+ msgsurf(NULL, "i");
+
+ gchanpipe = g_io_channel_unix_new(pipein);
+ g_io_channel_set_encoding(gchanpipe, NULL, NULL);
+ g_io_channel_set_close_on_unref(gchanpipe, TRUE);
+ g_io_add_watch(gchanpipe, G_IO_IN, readpipe, NULL);
}
