Add useInterimTilesOnError property to ol.layer.Tile

src/objectliterals.jsdoc

@@ -533,6 +533,8 @@
  *      (inclusive) at which this layer will be visible.
  * @property {number|undefined} maxResolution The maximum resolution
  *      (exclusive) below which this layer will be visible.
+ * @property {boolean|undefined} useInterimTilesOnError Use interim tiles on
+ *      error.  Default is `true`.
  * @todo stability experimental
  */
 

src/ol/layer/tilelayer.js

@@ -7,7 +7,8 @@ goog.require('ol.layer.Layer');
  * @enum {string}
  */
 ol.layer.TileProperty = {
-  PRELOAD: 'preload'
+  PRELOAD: 'preload',
+  USE_INTERIM_TILES_ON_ERROR: 'useInterimTilesOnError'
 };
 
 
@@ -51,3 +52,32 @@ goog.exportProperty(
     ol.layer.Tile.prototype,
     'setPreload',
     ol.layer.Tile.prototype.setPreload);
+
+
+/**
+ * @return {boolean|undefined} Use interim tiles on error.
+ * @todo stability experimental
+ */
+ol.layer.Tile.prototype.getUseInterimTilesOnError = function() {
+  return /** @type {boolean|undefined} */ (
+      this.get(ol.layer.TileProperty.USE_INTERIM_TILES_ON_ERROR));
+};
+goog.exportProperty(
+    ol.layer.Tile.prototype,
+    'getUseInterimTilesOnError',
+    ol.layer.Tile.prototype.getUseInterimTilesOnError);
+
+
+/**
+ * @param {boolean|undefined} useInterimTilesOnError Use interim tiles on error.
+ * @todo stability experimental
+ */
+ol.layer.Tile.prototype.setUseInterimTilesOnError =
+    function(useInterimTilesOnError) {
+  this.set(
+      ol.layer.TileProperty.USE_INTERIM_TILES_ON_ERROR, useInterimTilesOnError);
+};
+goog.exportProperty(
+    ol.layer.Tile.prototype,
+    'setUseInterimTilesOnError',
+    ol.layer.Tile.prototype.setUseInterimTilesOnError);