From f72b9a7658cea71ee1edf4ae678a2c8043d9e5bf Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Tue, 4 Oct 2011 22:19:45 -0400
Subject: Begin work on safely allowing concurrent edits on data, giving better
form interface.
---
src/lib/Form.class.php | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
create mode 100644 src/lib/Form.class.php
(limited to 'src/lib')
diff --git a/src/lib/Form.class.php b/src/lib/Form.class.php
new file mode 100644
index 0000000..725bac5
--- /dev/null
+++ b/src/lib/Form.class.php
@@ -0,0 +1,57 @@
+<?php
+
+require_once('Auth.class.php');
+
+class Form {
+ public $getter = null;
+ public $setter = null;
+ public function __constructor($get, $set) {
+ $this->getter = $get;
+ $this->setter = $set;
+ }
+ private function getConf($key) {
+ call_user_func($getter, $key);
+ }
+ public function setConf($key, $value) {
+ call_user_func($setter, $key, $value);
+ }
+ private function getConfString($key) {
+ $raw = $this->getConf($key);
+ $value = $raw['value'];
+ if ($value===false) return 'false';
+ if ($value===true) return 'true';
+ return $value;
+ }
+
+ public function updateValue($value, $value_base=null) {
+ $doit = true;
+ $forked = false;
+ $have_old = ($value_base!==null);
+ if ($have_old) {
+ @$value_base = $old[$uid];
+ $we_changed_it = $value_base != $value;
+ if ($we_changed_it) {
+ $value_fork = $this->getConfString($key);
+ $someone_else_changed_it =
+ $value_fork != $value_base;
+ if ($someone_else_changed_it) {
+ if ($value == $value_fork) {
+ // we might as well not have
+ $we_changed_it = false;
+ } else {
+ $forked = true;
+ }
+ }
+ }
+ if (!$we_changed_it) {
+ $doit = false;// nothing to do
+ }
+ }
+ if ($doit) {
+ return $this->setConf($key, $value);
+ }
+ if ($forked) {
+ return $value_fork;
+ }
+ }
+}
--
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