From e762be0be3b94ae221b85e4073043434e75331e4 Mon Sep 17 00:00:00 2001
From: Devin Howard <devin@callysto.com>
Date: Thu, 14 Feb 2013 21:58:55 -0500
Subject: [PATCH] implemented clear canvas too... sort of

---
 app/assets/javascripts/Jit/find.js | 30 +++++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/app/assets/javascripts/Jit/find.js b/app/assets/javascripts/Jit/find.js
index e17a3073..01cbb242 100644
--- a/app/assets/javascripts/Jit/find.js
+++ b/app/assets/javascripts/Jit/find.js
@@ -163,14 +163,34 @@ function onCanvasSearch(name,mapID,mapperID) {
 	});
 }
 
-
 function clearCanvas() {
-	Mconsole.graph.eachNode( function(n) { Mconsole.graph.removeNode(n.id); Mconsole.labels.disposeLabel(n.id); });	
-	Mconsole.plot();
+  Mconsole.graph.eachNode(function(n) {
+    Mconsole.graph.removeNode(n.id);
+    Mconsole.labels.disposeLabel(n.id);
+  });
+  Mconsole.plot();
+}
+
+function clearCanvasExceptRoot() {
+  var ids = new Array();
+  Mconsole.graph.eachNode(function(n) {
+    ids.push(n.id);
+  });
+
+  var root = Mconsole.graph.nodes[Mconsole.root];
+  ids.forEach(function(id, index) {
+    if (id != root.id) {
+      Mconsole.graph.removeNode(id);
+      //OK I feel bad about this, but not too bad
+      //TODO: this leaves labels hidden on the map
+      Mconsole.labels.hideLabel(id);
+    }
+  });
+  fetchRelatives(root); //also runs Mconsole.plot()
 }
 
 function clearFoundData() {
-	Mconsole.graph.eachNode( function(n) { 
+  Mconsole.graph.eachNode( function(n) { 
     if (n.getData('inCommons') === true) {
       Mconsole.graph.removeNode(n.id);
       Mconsole.labels.disposeLabel(n.id);
@@ -557,4 +577,4 @@ function closeFind() {
      width: '45px',
      height: '32px'
      }, 100);
-}
\ No newline at end of file
+}