Restructuring GUI code - implementing view life-cycles.
Using sample views for now.
Still WIP.
diff --git a/web/gui/src/main/webapp/sample2.js b/web/gui/src/main/webapp/sample2.js
new file mode 100644
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+++ b/web/gui/src/main/webapp/sample2.js
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2014 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.
+ */
+
+/*
+ Alternate Sample module file to illustrate framework integration.
+
+ @author Simon Hunt
+ */
+
+(function (onos) {
+    'use strict';
+
+    var svg;
+
+
+    function sizeSvg(view) {
+        svg.attr({
+            width: view.width(),
+            height: view.height()
+        });
+    }
+
+    // NOTE: view is a view-token data structure:
+    // {
+    //     vid: 'view-id',
+    //     nid: 'nav-id',
+    //     $div: ...      // d3 selection of dom view div.
+    // }
+
+    // gets invoked only the first time the view is loaded
+    function preload(view, ctx) {
+        svg = view.$div.append('svg');
+        sizeSvg(view);
+    }
+
+    function reset(view) {
+        // clear our svg of all objects
+        svg.html('');
+    }
+
+    function load(view, ctx) {
+        var fill = 'red',
+            stroke = 'black',
+            ctxText = ctx ? 'Context is "' + ctx + '"' : 'No Context';
+
+        svg.append('circle')
+            .attr({
+                cx: view.width() / 2,
+                cy: view.height() / 2,
+                r: 30
+            })
+            .style({
+                fill: fill,
+                stroke: stroke,
+                'stroke-width': 3.5
+            });
+
+        svg.append('text')
+            .text(ctxText)
+            .attr({
+                x: 20,
+                y: '1.5em'
+            })
+            .style({
+                fill: 'darkgreen',
+                'font-size': '20pt'
+            });
+    }
+
+    function resize(view, ctx) {
+        sizeSvg(view);
+        svg.selectAll('circle')
+            .attr({
+                cx: view.width() / 2,
+                cy: view.height() / 2
+            });
+    }
+
+    // == register views here, with links to lifecycle callbacks
+
+    onos.ui.addView('sample', {
+        preload: preload,
+        reset: reset,
+        load: load,
+        resize: resize
+    });
+
+
+}(ONOS));