unify create filter interface

functions.js

@@ -917,3 +917,83 @@ function center_element(e) {
 		exception_error("center_element", e);
 	}
 }
+
+function displayDlg(id, param) {
+
+	if (!xmlhttp_ready(xmlhttp)) {
+		printLockingError();
+		return
+	}
+
+	notify("");
+
+	xmlhttp.open("GET", "backend.php?op=dlg&id=" +
+		param_escape(id) + "&param=" + param_escape(param), true);
+	xmlhttp.onreadystatechange=dlg_display_callback;
+	xmlhttp.send(null);
+
+	disableHotkeys();
+}
+
+function closeDlg() {
+	var dlg = document.getElementById("infoBoxShadow");
+	dlg.style.display = "none";
+	enableHotkeys();
+}
+
+function dlg_submit_callback() {
+	if (xmlhttp.readyState == 4) {
+		notify(xmlhttp.responseText);
+		closeDlg();
+
+		// called from prefs, reload tab
+		if (active_tab) {
+			selectTab(active_tab, false);
+		}
+	} 
+}
+
+function dlg_display_callback() {
+	if (xmlhttp.readyState == 4) {
+		var dlg = document.getElementById("infoBox");
+		var dlg_s = document.getElementById("infoBoxShadow");
+
+		dlg.innerHTML = xmlhttp.responseText;
+		dlg_s.style.display = "block";
+	} 
+}
+
+function qaddFilter() {
+
+	if (!xmlhttp_ready(xmlhttp)) {
+		printLockingError();
+		return
+	}
+
+	var regexp = document.getElementById("fadd_regexp");
+	var match = document.getElementById("fadd_match");
+	var feed = document.getElementById("fadd_feed");
+	var action = document.getElementById("fadd_action");
+
+	if (regexp.value.length == 0) {
+		notify("Missing filter expression.");
+	} else {
+		notify("Adding filter...");
+
+		var v_match = match[match.selectedIndex].text;
+		var feed_id = feed[feed.selectedIndex].id;
+		var action_id = action[action.selectedIndex].id;
+
+		xmlhttp.open("GET", "backend.php?op=pref-filters&quiet=1&subop=add&regexp=" +
+			param_escape(regexp.value) + "&match=" + v_match +
+			"&fid=" + param_escape(feed_id) + "&aid=" + param_escape(action_id), true);
+			
+		xmlhttp.onreadystatechange=dlg_submit_callback;
+		xmlhttp.send(null);
+
+		regexp.value = "";
+	}
+
+}
+
+