1 files changed, 116 insertions, 0 deletions
diff --git a/scripts/model/util.js b/scripts/model/util.js
new file mode 100644
index 00000000..0e54fc70
--- /dev/null
+++ b/scripts/model/util.js
@@ -0,0 +1,116 @@
+"use strict"
+
+/**
+ * model utility functions:
+ *    - convert from/to client/backend data representations
+ */
+define([ 'jquery', 'model/diff', 'model/graph' ], function($, model_diff, model_graph) {
+
+    /**
+     * read by adapting from backend format
+     */
+    function adapt_format_read_node(n_raw) {
+        var ret;
+
+        ret = $.extend({
+            'type' : n_raw['__type'].toLowerCase(), // discard all
+            // labels except
+            'state' : 'temp',
+        }, n_raw);
+
+        delete ret.__label_set;
+
+        return ret;
+    }
+
+    /**
+     * write by adapting to backend format
+     */
+    function adapt_format_write_node(n_raw) {
+        var ret = $.extend({
+            '__type' : n_raw.type,
+        }, n_raw);
+
+        delete ret.type;
+        delete ret.state;
+
+        return ret
+    }
+
+    /**
+     * read by adapting from backend format
+     */
+    function adapt_format_read_link(l_raw) {
+        var ret;
+
+        ret = $.extend({
+            'sourceId' : l_raw['__src'],
+            'targetId' : l_raw['__dst'],
+            'type' : l_raw['__type'].toLowerCase(), // discard all
+            // labels except
+            'state' : 'temp',
+        }, l_raw);
+
+        ret['name'] = ret['type'];
+
+        delete ret.__src;
+        delete ret.__dst;
+        delete ret.__type;
+
+        return ret;
+    }
+
+    /**
+     * write by adapting to backend format
+     */
+    function adapt_format_write_link(l_raw) {
+        var ret = $.extend({
+            '__src' : l_raw.sourceId,
+            '__dst' : l_raw.targetId,
+            '__type' : 'textual_link',
+        }, l_raw);
+
+        delete ret.source;
+        delete ret.target;
+        delete ret.state;
+
+        return ret;
+    }
+
+    /**
+     * write adapt diff from node set, link set. sets may be passed by reference
+     * as they are cloned
+     */
+    function adapt_format_write_topo_diff(n_set, l_set) {
+
+        var new_n_set = $.extend([], n_set);
+        var new_l_set = $.extend([], l_set);
+
+        // filter out 'bubble' nodes
+        new_n_set = new_n_set.filter(function(n) {
+            return 'bubble' != n.type;
+        });
+
+        new_n_set = $.map(new_n_set, function(n, _) {
+            return adapt_format_write_node(n);
+        })
+
+        new_l_set = $.map(new_l_set, function(l, _) {
+            return adapt_format_write_link(l);
+        })
+
+        var topo_diff = new model_diff.new_topo_diff({
+            node_set_add : new_n_set,
+            link_set_add : new_l_set
+        });
+        return topo_diff;
+    }
+
+    return {
+        adapt_format_read_node : adapt_format_read_node,
+        adapt_format_read_link : adapt_format_read_link,
+        adapt_format_write_node : adapt_format_write_node,
+        adapt_format_write_link : adapt_format_write_link,
+        adapt_format_write_topo_diff : adapt_format_write_topo_diff,
+    }
+});
+\ No newline at end of file