Allow setting a default scale type preference for the traffic graphs widget

I originally submitted this at https://redmine.pfsense.org/issues/2994
but it seems that is not used for commits now so I am adding it here.
It works great on my box, and I can't see these changes causing any
issues on other types.

I like to have Autoscale (follow) set for the traffic graphs widget and
hate having to click on Autoscale (up) to change it to follow every
time I enter the dashboard page.

This preference is written to the traffic graph widget section in
config.xml

2 files changed, 30 insertions, 1 deletions

diff --git a/usr/local/www/graph.php b/usr/local/www/graph.php
index 6a227fa..c7c8c39 100755
--- a/usr/local/www/graph.php
+++ b/usr/local/www/graph.php
@@ -55,7 +55,11 @@ $ifnum = get_real_interface($ifnum);
 $ifname=@$_GET["ifname"]?$_GET["ifname"]:"Interface $ifnum";  //Interface name that will be showed on top right of graph
 
 /********* Other conf *******/
-$scale_type="up";               //Autoscale default setup : "up" = only increase scale; "follow" = increase and decrease scale according to current graphed datas
+if (isset($config["widgets"]["trafficgraphs"]["scale_type"]))
+	$scale_type = $config["widgets"]["trafficgraphs"]["scale_type"];
+else
+	$scale_type = "up";
+
 $nb_plot=120;                   //NB plot in graph
 if ($_GET["timeint"])
 	$time_interval = $_GET["timeint"];		//Refresh time Interval
diff --git a/usr/local/www/widgets/widgets/traffic_graphs.widget.php b/usr/local/www/widgets/widgets/traffic_graphs.widget.php
index c313575..1314be4 100644
--- a/usr/local/www/widgets/widgets/traffic_graphs.widget.php
+++ b/usr/local/www/widgets/widgets/traffic_graphs.widget.php
@@ -59,6 +59,9 @@ if ($_POST) {
 	if (isset($_POST["refreshinterval"])) {
 		$a_config["refreshinterval"] = $_POST["refreshinterval"];
 	}
+	if (isset($_POST["scale_type"])) {
+		$a_config["scale_type"] = $_POST["scale_type"];
+	}
 	$a_config["shown"]["item"] = array();
 	foreach ($ifdescrs as $ifname => $ifdescr) {
 		$state = $_POST["shown"][$ifname];
@@ -86,6 +89,12 @@ if (isset($a_config["refreshinterval"])) {
 	$refreshinterval = 10;
 }
 
+if (isset($a_config["scale_type"])) {
+        $scale_type = $a_config["scale_type"];
+} else {
+        $scale_type = up;
+}
+
 ?>
 <input type="hidden" id="traffic_graphs-config" name="traffic_graphs-config" value="">
 
@@ -100,6 +109,22 @@ if (isset($a_config["refreshinterval"])) {
 	<?php foreach ($ifdescrs as $ifname => $ifdescr) { ?>
 		<input type="hidden" name="shown[<?= $ifname ?>]" value="<?= $shown[$ifname] ? "show" : "hide" ?>" />
 	<?php } ?>
+	Default AutoScale:
+		<?php 
+			$scale_type_up="checked";
+			$scale_type_follow="unchecked";
+			if (isset($config["widgets"]["trafficgraphs"]["scale_type"])) {
+				$selected_radio = $config["widgets"]["trafficgraphs"]["scale_type"];
+				if ($selected_radio == "up") {
+					$scale_type_up = "checked";
+				}
+				else if ($selected_radio == "follow") {
+					$scale_type_follow = "checked";
+				}
+			}
+		?>
+	<input name="scale_type" class="radio" type="radio" id="scale_type" value="up" <?php echo $scale_type_up; ?> onchange="updateGraphDisplays();" /> <span>up</span>
+	<input name="scale_type" class="radio" type="radio" id="scale_type" value="follow" <?php echo $scale_type_follow; ?> onchange="updateGraphDisplays();" /> <span>follow</span><br><br>
 	Refresh Interval:
 	<select name="refreshinterval" class="formfld" id="refreshinterval" onchange="updateGraphDisplays();">
 		<?php for ($i = 1; $i <= 10; $i += 1) { ?>