Topo2: Reset node position and unpin
Refactored NodeModel
Added class to the surrounding rect for selected class
Renamed Panels to avoid conflict with classic topo
Topo2: Details Panel for single device selection
Topo2: Added Equalize Masters keyboard shortcut
Topo2: Toggle Link Port highlighting
Topo2: Node Labels was returning empty string
       if friendly name was null
Topo2: Reset map zoom and panning

Change-Id: I0a949b2f8205e1abcfcac5aaec65c18d76e77cff
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2NodePosition.js b/web/gui/src/main/webapp/app/view/topo2/topo2NodePosition.js
new file mode 100644
index 0000000..7381f6b
--- /dev/null
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2NodePosition.js
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ ONOS GUI -- Topology Node Position Module.
+ Module that helps position nodes in the topology
+ */
+
+(function () {
+    'use strict';
+
+    // Injected vars
+    var rs, t2mcs;
+
+    // Internal state;
+    var nearDist = 15;
+
+    function positionNode(node, forUpdate) {
+        var meta = node.get('metaUi'),
+            x = meta && meta.x,
+            y = meta && meta.y,
+            dim = [800, 600],
+            xy;
+
+        // If the device contains explicit LONG/LAT data, use that to position
+        if (setLongLat(node)) {
+            // Indicate we want to update cached meta data...
+            return true;
+        }
+
+        // else if we have [x,y] cached in meta data, use that...
+        if (x !== undefined && y !== undefined) {
+            node.fixed = true;
+            node.px = node.x = x;
+            node.py = node.y = y;
+            return;
+        }
+
+        // if this is a node update (not a node add).. skip randomizer
+        if (forUpdate) {
+            return;
+        }
+
+        // Note: Placing incoming unpinned nodes at exactly the same point
+        //        (center of the view) causes them to explode outwards when
+        //        the force layout kicks in. So, we spread them out a bit
+        //        initially, to provide a more serene layout convergence.
+        //       Additionally, if the node is a host, we place it near
+        //        the device it is connected to.
+
+        function rand() {
+            return {
+                x: rs.randDim(dim[0]),
+                y: rs.randDim(dim[1])
+            };
+        }
+
+        function near(node) {
+            return {
+                x: node.x + nearDist + rs.spread(nearDist),
+                y: node.y + nearDist + rs.spread(nearDist)
+            };
+        }
+
+        function getDevice(cp) {
+            return rand();
+        }
+
+        xy = (node.class === 'host') ? near(getDevice(node.cp)) : rand();
+
+        if (node.class === 'sub-region') {
+            xy = rand();
+            node.x = node.px = xy.x;
+            node.y = node.py = xy.y;
+        }
+        angular.extend(node, xy);
+    }
+
+    function setLongLat(el) {
+        var loc = el.get('location'),
+            coord;
+
+        if (loc && loc.type === 'lnglat') {
+
+            if (loc.lat === 0 && loc.lng === 0) {
+                return false;
+            }
+
+            coord = coordFromLngLat(loc);
+            el.fixed = true;
+            el.x = el.px = coord[0];
+            el.y = el.py = coord[1];
+
+            return true;
+        }
+    }
+
+    function coordFromLngLat(loc) {
+        var p = t2mcs.projection();
+        return p ? p([loc.lng, loc.lat]) : [0, 0];
+    }
+
+    angular.module('ovTopo2')
+    .factory('Topo2NodePositionService',
+        ['RandomService',
+            function (_rs_, _t2mcs_) {
+
+                rs = _rs_;
+                t2mcs = _t2mcs_;
+
+                return {
+                    positionNode: positionNode,
+                    setLongLat: setLongLat
+                };
+            }
+        ]);
+})();