Merge pull request #1178 from hudsonfoo/open1168

[Frontend] Delay visibility of progress bar

platform/commonUI/dialog/res/templates/overlay.html

@@ -19,7 +19,7 @@
  this source code distribution or the Licensing information page available
  at runtime from the About dialog for additional information.
 -->
-<div class="abs overlay">
+<div class="abs overlay" ng-class="{'delayEntry100ms' : ngModel.delay}">
     <div class="abs blocker"></div>
     <div class="abs holder">
         <a ng-click="ngModel.cancel()"

platform/commonUI/dialog/src/DialogService.js

@@ -200,6 +200,9 @@ define(
          * shown above a progress bar to indicate what's happening.
          * @property {number} progress a percentage value (1-100)
          * indicating the completion of the blocking task
+         * @property {boolean} delay adds a brief delay before loading
+         * the dialog. Useful for removing the dialog flicker when the
+         * conditions for displaying the dialog change rapidly.
          * @property {string} progressText the message to show below a
          * progress bar to indicate progress. For example, this might be
          * used to indicate time remaining, or items still to process.