+
+/*
+ * Updates the _NET_WM_WINDOW_TYPE property.
+ *
+ */
+void window_update_type(i3Window *window, xcb_get_property_reply_t *reply) {
+ xcb_atom_t new_type = xcb_get_preferred_window_type(reply);
+ if (new_type == XCB_NONE) {
+ DLOG("cannot read _NET_WM_WINDOW_TYPE from window.\n");
+ return;
+ }
+
+ window->window_type = new_type;
+ LOG("_NET_WM_WINDOW_TYPE changed to %i.\n", window->window_type);
+
+ run_assignments(window);
+}
+
+/*
+ * Updates the WM_HINTS (we only care about the input focus handling part).
+ *
+ */
+void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *urgency_hint) {
+ if (urgency_hint != NULL)
+ *urgency_hint = false;
+
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ DLOG("WM_HINTS not set.\n");
+ FREE(prop);
+ return;
+ }
+
+ xcb_icccm_wm_hints_t hints;
+
+ if (!xcb_icccm_get_wm_hints_from_reply(&hints, prop)) {
+ DLOG("Could not get WM_HINTS\n");
+ free(prop);
+ return;
+ }
+
+ if (hints.flags & XCB_ICCCM_WM_HINT_INPUT) {
+ win->doesnt_accept_focus = !hints.input;
+ LOG("WM_HINTS.input changed to \"%d\"\n", hints.input);
+ }
+
+ if (urgency_hint != NULL)
+ *urgency_hint = (xcb_icccm_wm_hints_get_urgency(&hints) != 0);
+
+ free(prop);
+}
+
+/*
+ * Updates the MOTIF_WM_HINTS. The container's border style should be set to
+ * `motif_border_style' if border style is not BS_NORMAL.
+ *
+ * i3 only uses this hint when it specifies a window should have no
+ * title bar, or no decorations at all, which is how most window managers
+ * handle it.
+ *
+ * The EWMH spec intended to replace Motif hints with _NET_WM_WINDOW_TYPE, but
+ * it is still in use by popular widget toolkits such as GTK+ and Java AWT.
+ *
+ */
+void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, border_style_t *motif_border_style) {
+/* This implementation simply mirrors Gnome's Metacity. Official
+ * documentation of this hint is nowhere to be found.
+ * For more information see:
+ * https://people.gnome.org/~tthurman/docs/metacity/xprops_8h-source.html
+ * http://stackoverflow.com/questions/13787553/detect-if-a-x11-window-has-decorations
+ */
+#define MWM_HINTS_DECORATIONS (1 << 1)
+#define MWM_DECOR_ALL (1 << 0)
+#define MWM_DECOR_BORDER (1 << 1)
+#define MWM_DECOR_TITLE (1 << 3)
+
+ if (motif_border_style != NULL)
+ *motif_border_style = BS_NORMAL;
+
+ if (prop == NULL || xcb_get_property_value_length(prop) == 0) {
+ FREE(prop);
+ return;
+ }
+
+ /* The property consists of an array of 5 uint64_t's. The first value is a bit
+ * mask of what properties the hint will specify. We are only interested in
+ * MWM_HINTS_DECORATIONS because it indicates that the second value of the
+ * array tells us which decorations the window should have, each flag being
+ * a particular decoration. */
+ uint64_t *motif_hints = (uint64_t *)xcb_get_property_value(prop);
+
+ if (motif_border_style != NULL && motif_hints[0] & MWM_HINTS_DECORATIONS) {
+ if (motif_hints[1] & MWM_DECOR_ALL || motif_hints[1] & MWM_DECOR_TITLE)
+ *motif_border_style = BS_NORMAL;
+ else if (motif_hints[1] & MWM_DECOR_BORDER)
+ *motif_border_style = BS_PIXEL;
+ else
+ *motif_border_style = BS_NONE;
+ }
+
+ FREE(prop);
+
+#undef MWM_HINTS_DECORATIONS
+#undef MWM_DECOR_ALL
+#undef MWM_DECOR_BORDER
+#undef MWM_DECOR_TITLE
+}