1 files changed, 74 insertions, 0 deletions
diff --git a/blockly/accessible/utils.service.js b/blockly/accessible/utils.service.js
new file mode 100644
index 0000000..3a7eef7
--- /dev/null
+++ b/blockly/accessible/utils.service.js
@@ -0,0 +1,74 @@
+/**
+ * AccessibleBlockly
+ *
+ * Copyright 2016 Google Inc.
+ * https://developers.google.com/blockly/
+ *
+ * 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.
+ */
+
+/**
+ * @fileoverview Angular2 utility service for multiple components. All
+ * functions in this service should be stateless, since this is a singleton
+ * service that is used for the entire application.
+ *
+ * @author madeeha@google.com (Madeeha Ghori)
+ */
+
+var blocklyApp = {};
+
+blocklyApp.UtilsService = ng.core
+  .Class({
+    constructor: function() {},
+    generateUniqueId: function() {
+      return 'blockly-' + Blockly.genUid();
+    },
+    generateIds: function(elementsList) {
+      var idMap = {};
+      for (var i = 0; i < elementsList.length; i++){
+        idMap[elementsList[i]] = this.generateUniqueId();
+      }
+      return idMap;
+    },
+    generateAriaLabelledByAttr: function(mainLabel, secondLabel, isDisabled) {
+      var attrValue = mainLabel + (secondLabel ? ' ' + secondLabel : '');
+      if (isDisabled) {
+        attrValue += ' blockly-disabled';
+      }
+      return attrValue;
+    },
+    getInputTypeLabel: function(connection) {
+      // Returns the input type name, or 'any' if any official input type
+      // qualifies.
+      if (connection.check_) {
+        return connection.check_.join(', ');
+      } else {
+        return Blockly.Msg.ANY;
+      }
+    },
+    getBlockTypeLabel: function(inputBlock) {
+      if (inputBlock.type == Blockly.NEXT_STATEMENT) {
+        return Blockly.Msg.STATEMENT;
+      } else {
+        return Blockly.Msg.VALUE;
+      }
+    },
+    getBlockDescription: function(block) {
+      // We use 'BLANK' instead of the default '?' so that the string is read
+      // out. (By default, screen readers tend to ignore punctuation.)
+      return block.toString(undefined, 'BLANK');
+    },
+    isWorkspaceEmpty: function() {
+      return !blocklyApp.workspace.topBlocks_.length;
+    }
+  });