+// Enable and disable items in the CSS menus.
+function disable_menu_item(item, disabledFlag) {
+ if (disabledFlag)
+ item.className = "disabled";
+ else
+ item.className = "";
+}
+
+// Dialog-box functions called from both C and JS.
+function dialog_init(titletext) {
+ // Create an overlay on the page which darkens everything
+ // beneath it.
+ dlg_dimmer = document.createElement("div");
+ dlg_dimmer.style.width = "100%";
+ dlg_dimmer.style.height = "100%";
+ dlg_dimmer.style.background = '#000000';
+ dlg_dimmer.style.position = 'fixed';
+ dlg_dimmer.style.opacity = 0.3;
+ dlg_dimmer.style.top = dlg_dimmer.style.left = 0;
+ dlg_dimmer.style["z-index"] = 99;
+
+ // Now create a form which sits on top of that in turn.
+ dlg_form = document.createElement("form");
+ dlg_form.style.width = (window.innerWidth * 2 / 3) + "px";
+ dlg_form.style.opacity = 1;
+ dlg_form.style.background = '#ffffff';
+ dlg_form.style.color = '#000000';
+ dlg_form.style.position = 'absolute';
+ dlg_form.style.border = "2px solid black";
+ dlg_form.style.padding = "20px";
+ dlg_form.style.top = (window.innerHeight / 10) + "px";
+ dlg_form.style.left = (window.innerWidth / 6) + "px";
+ dlg_form.style["z-index"] = 100;
+
+ var title = document.createElement("p");
+ title.style.marginTop = "0px";
+ title.appendChild(document.createTextNode(titletext));
+ dlg_form.appendChild(title);
+
+ dlg_return_funcs = [];
+ dlg_next_id = 0;
+}
+
+function dialog_launch(ok_function, cancel_function) {
+ // Put in the OK and Cancel buttons at the bottom.
+ var button;
+
+ if (ok_function) {
+ button = document.createElement("input");
+ button.type = "button";
+ button.value = "OK";
+ button.onclick = ok_function;
+ dlg_form.appendChild(button);
+ }
+
+ if (cancel_function) {
+ button = document.createElement("input");
+ button.type = "button";
+ button.value = "Cancel";
+ button.onclick = cancel_function;
+ dlg_form.appendChild(button);
+ }
+
+ document.body.appendChild(dlg_dimmer);
+ document.body.appendChild(dlg_form);
+}
+
+function dialog_cleanup() {
+ document.body.removeChild(dlg_dimmer);
+ document.body.removeChild(dlg_form);
+ dlg_dimmer = dlg_form = null;
+ onscreen_canvas.focus();
+}
+