Merge pull request #673 from danvk/track-code-size

[dygraphs.git] / experimental / palette / index.js

diff --git a/experimental/palette/index.js b/experimental/palette/index.js
index 518f4b2..924b139 100644 (file)
--- a/experimental/palette/index.js
+++ b/experimental/palette/index.js
@@ -32,16 +32,35 @@ Index.splitVariables = function() { // http://www.idealog.us/2006/06/javascript_
   var query = window.location.search.substring(1); 
   var args = {};
   var vars = query.split("&"); 
-  for (var i = 0;i < vars.length; i++) { 
-    var pair = vars[i].split("="); 
-    args[pair[0]] = pair[1];
+  for (var i = 0; i < vars.length; i++) { 
+    if (vars[i].length > 0) {
+      var pair = vars[i].split("="); 
+      args[pair[0]] = pair[1];
+    }
   }
   return args;
 }
 
+/**
+ * Draw the graph.
+ * @param {Object} element the display element
+ * @param {Object} data the data to be shown
+ * @param {Object} options the options hash.
+ */
 Index.draw = function(element, data, options) {
   element.innerHTML = "";
   element.removeAttribute("style");
+
+  // Replace the drawCallback function with one that also lets us track
+  // all labels (for the palette.)
+  // If the drawCallback option is not specified, use a null function.
+  var originalDraw = options["drawCallback"] || function() {};
+  options.drawCallback = function(g, isInitial) {
+    Index.palette.setSeries(g.getLabels());
+    // Call the original function, too.
+    originalDraw(g, isInitial);
+  };
+
   var g = new Dygraph(
     element,
     data,
@@ -56,28 +75,60 @@ Index.draw = function(element, data, options) {
 
 Index.addMessage = function(text) {
   var messages = document.getElementById("messages");
-  messages.innerText = messages.innerText + text + "\n";
+  messages.textContent = messages.textContent + text + "\n";
 }
 
+/**
+ * Start up the palette system.
+ */
 Index.start = function() {
   var variables = Index.splitVariables();
-  var sampleIndex = variables["sampleIndex"];
-  if (!(sampleIndex)) {
-    sampleIndex = 0;
-  }
-  var sample = Samples.samples[sampleIndex];
+  var sampleName = variables["sample"] || "interestingShapes";
+  var sampleIndex = Samples.indexOf(sampleName);
+  var sample = Samples.data[sampleIndex];
   var data = sample.data;
   var redraw = function() {
-    Index.draw(document.getElementById("graph"), data, palette.read());
+    Index.draw(document.getElementById("graph"), data, Index.palette.read());
   }
 
-  var palette = new Palette();
-  palette.create(document, document.getElementById("optionsPalette"));
-  palette.write(sample.options);
-  palette.onchange = redraw;
-  palette.filterBar.focus();
+  // Selector is the drop-down for selecting a set of data.
+
+  // Popupate the selector with the set of data samples
+  var selector = document.getElementById("selector").getElementsByTagName("select")[0];
+  for (var idx in Samples.data) {
+    var entry = Samples.data[idx];
+    var option = document.createElement("option");
+    option.value = entry.id;
+    option.textContent = entry.title;
+    selector.appendChild(option);
+  }
+  selector.onchange = function() {
+    var id = selector.options[selector.selectedIndex].value;
+    var url = document.URL;
+    var qmIndex = url.indexOf("?");
+    if (qmIndex >= 0) {
+      url = url.substring(0, qmIndex);
+    }
+    url = url + "?sample=" + id;
+    for (var idx in variables) {
+      if (idx != "sample") {
+        url = url + "&" + idx + "=" + variables[idx];
+      }
+    }
+    window.location = url;
+  }
+  selector.selectedIndex = sampleIndex;
+
+  // Palette contains the widget that builds options.
+  Index.palette = new MultiPalette();
+  Index.palette.create(document.getElementById("optionsPalette"));
+  Index.palette.write(sample.options);
+  Index.palette.onchange = redraw;
+  Index.palette.filterBar.focus();
+
   redraw();
 
+  // Find all new options which we don't implement here in the palette.
   for (var opt in Dygraph.OPTIONS_REFERENCE) {
     if (!(opt in opts)) {
       var entry = Dygraph.OPTIONS_REFERENCE[opt];