From d7726fe9d86267f50fe4129e53399d014aa7b4c0 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Tue, 7 Dec 2010 19:50:02 +0100
Subject: [PATCH] browser: cumulative search prefixes

Queries can be prepended by [-+?] to hide/show/toggle matches without
touching other rows.
---
 searchlocal.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/searchlocal.js b/searchlocal.js
index 1a5037f..e6f16ff 100644
--- a/searchlocal.js
+++ b/searchlocal.js
@@ -6,6 +6,15 @@ function filtercell(el, set, action) {
 		case 'target':
 			if (set) el.classList.toggle(action);
 			break;
+		case 'remove':
+			if (set) el.style.display = 'none';
+			break;
+		case 'add':
+			if (set) el.style.display = '';
+			break;
+		case 'toggle':
+			if (set) el.style.display = el.style.display == 'none' ? '' : 'none';
+			break;
 		case 'filter':
 			el.style.display = set ? '' : 'none';
 			if (!Element.prototype.hasOwnProperty('classList')) return;
@@ -26,6 +35,17 @@ function filterrows(table, match, action) {
 function filtertable(query, action) {
 	var table = document.getElementsByTagName('TABLE')[0];
 
+	if (!action) {
+		var match = /^([-+?=]?)(.*)/.exec(query);
+		switch (match[1]) {
+			case '+': action = 'add';    break;
+			case '-': action = 'remove'; break;
+			case '?': action = 'toggle'; break;
+			case '=': action = 'filter'; break;
+		}
+		query = match[2];
+	}
+
 	if (/^[A-Z0-9 ]{2,}$/.test(query)) {
 		// category title if all uppercase
 		var match = function(row) {
-- 
2.30.0