1 files changed, 79 insertions, 0 deletions
diff --git a/scripts/history.js b/scripts/history.js
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+++ b/scripts/history.js
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+// Once upon a time we shall have a versioned property graph from which history
+// will be one extractable aspect, much like a git for graphs. Now we just have
+// a plain list of events for a specific user.
+
+// Enums and chrome don't play along well. Object.freeze I guess? actually rhizi code cuases
+// exceptions but that shouldn't break the console, as evidenced by the '__commandLineAPI is not defined'
+// error below.
+//
+// Uncaught TypeError: Can't add property addednodes, object is not extensible rhizicore.js:4
+// Uncaught TypeError: Can't add property text, object is not extensible textanalysis.js:3
+// Uncaught TypeError: Can't add property key, object is not extensible buttons.js:5
+// Uncaught ReferenceError: sentence is not defined robot.js:11
+// Resource interpreted as Font but transferred with MIME type application/font-sfnt: "http://localhost:8000/external/Lato300.ttf". jquery.js:2
+// > document
+// ReferenceError: __commandLineAPI is not defined
+//var ActionEnum = Enum();
+
+function History(user) {
+    this.records = [];
+    this.user = user;
+}
+
+var ACTION_TYPE = 'ACTION_TYPE';
+var ACTION_MOUSE = 'ACTION_MOUSE';
+var ACTION_GRAPH_ADD = 'ACTION_GRAPH_ADD';
+var ACTION_GRAPH_DELETE = 'ACTION_GRAPH_DELETE';
+
+History.prototype.record = function(d)
+{
+    if (d === undefined || d.action === undefined) {
+        throw "Invalid arguments";
+    }
+    d['user'] = this.user;
+    d['timestamp'] = new Date();
+    this.records.push(d);
+};
+
+History.prototype.save_to_file = function()
+{
+    // TODO: filename and chrome support (grep json;base64 for other locations)
+    // perhaps has to wait for FileWriter api?
+    location.href = 'data:text/json;base64,' + window.btoa(JSON.stringify(this.records));
+};
+
+History.prototype.clear_history = function()
+{
+    this.records = [];
+}
+
+History.prototype.record_nodes_removal = function(ids)
+{
+    this.record({
+        'action': ACTION_GRAPH_DELETE,
+        'node_ids': ids
+    });
+}
+
+History.prototype.record_links = function(links)
+{
+    if (links === undefined || links.length === undefined || links.length <= 0) {
+        throw "Invalid arguments"
+    }
+    this.record({
+        'action': ACTION_GRAPH_ADD,
+        'nodes': [],
+        'links': links
+    });
+}
+
+History.prototype.record_nodes = function(nodes)
+{
+    if (nodes === undefined || nodes.length === undefined || nodes.length <= 0) {
+        throw "Invalid arguments"
+    }
+    this.record({'action': ACTION_GRAPH_ADD,
+     'nodes': nodes,
+     'linkes': []
+    });
+}