Initial commit

lib/assets/javascripts/builder/map-mode-model.js

@@ -0,0 +1,62 @@
+var Backbone = require('backbone');
+
+var VIEWING_MODE = 'viewing';
+var DRAWING_FEATURE_MODE = 'drawing';
+var EDITING_FEATURE_MODE = 'editing';
+
+var MapMode = Backbone.Model.extend({
+  defaults: {
+    mode: VIEWING_MODE
+  },
+
+  enterViewingMode: function () {
+    delete this._featureDefinition;
+    this.set('mode', VIEWING_MODE);
+  },
+
+  enterDrawingFeatureMode: function (feature) {
+    this._featureDefinition = feature;
+    this.set('mode', DRAWING_FEATURE_MODE);
+  },
+
+  enterEditingFeatureMode: function (feature) {
+    this._featureDefinition = feature;
+    this.set('mode', EDITING_FEATURE_MODE);
+  },
+
+  getFeatureDefinition: function () {
+    return this._featureDefinition;
+  },
+
+  isViewingMode: function () {
+    return this._isMode(VIEWING_MODE);
+  },
+
+  isDrawingFeatureMode: function () {
+    return this._isMode(DRAWING_FEATURE_MODE);
+  },
+
+  isEditingFeatureMode: function () {
+    return this._isMode(EDITING_FEATURE_MODE);
+  },
+
+  bindRouteEvents: function (routeModel) {
+    this.listenTo(routeModel, 'change:currentRoute', this._handleRoute, this);
+  },
+
+  _handleRoute: function (routeModel) {
+    var currentRoute = routeModel.get('currentRoute');
+    var routeName = currentRoute[0];
+
+    if (routeName !== 'edit_feature' &&
+        routeName.indexOf('add_feature_') !== 0) {
+      this.enterViewingMode();
+    }
+  },
+
+  _isMode: function (mode) {
+    return this.get('mode') === mode;
+  }
+});
+
+module.exports = MapMode;