Clean up outdated TODO comments.

src/drawerbase.js

@@ -239,7 +239,6 @@ OpenSeadragon.DrawerBase = class DrawerBase{
      *
      */
     _checkInterfaceImplementation(){
-        // TODO: is this necessary? why not throw just in the method itself?
         if (this._createDrawingElement === $.DrawerBase.prototype._createDrawingElement) {
             throw(new Error("[drawer]._createDrawingElement must be implemented by child class"));
         }

src/tile.js

@@ -488,9 +488,6 @@ $.Tile.prototype = {
         }
 
         if (value) {
-            // Note: the value's data is probably not preserved - if a cacheKey cache exists, it will ignore
-            // data - it would have to call setData(...)
-            // TODO: call setData() ?
             if (value.loaded) {
                 this.addCache(this.cacheKey, value.data, value.type, true, false);
             } else {
@@ -584,15 +581,10 @@ $.Tile.prototype = {
      * @return
      */
     updateRenderTarget: function () {
-        // TODO we probably need to create timestamp and check if current update stamp is the one saved on the cache,
-        //   if yes, then the update has been performed (and update all tiles asociated to the same cache at once)
-        //   since we cannot ensure all tiles are called with the update (e.g. zombies)
         // Check if we asked for restore, and make sure we set it to false since we update the whole cache state
         const requestedRestore = this.__restore;
         this.__restore = false;
 
-        //TODO IMPLEMENT LOCKING AND IGNORE PIPELINE OUT OF THESE CALLS
-
         // Now, if working cache exists, we set main cache to the working cache, since it has been updated
         // if restore() was called last, then working cache was deleted (does not exist)
         const cache = this.getCache(this._wcKey);
@@ -763,8 +755,6 @@ $.Tile.prototype = {
         if (currentMainKey === key) {
             if (!sameBuiltinKeys && this._caches[originalDataKey]) {
                 // if we have original data let's revert back
-                // TODO consider calling drawer.getDataToDraw(...)
-                //   or even better, first ensure the data is compatible and then update...?
                 this._updateMainCacheKey(originalDataKey);
             } else {
                 $.console.warn("[Tile.removeCache] trying to remove the only cache that can be used to draw the tile!",

src/tilecache.js

@@ -229,6 +229,7 @@
          */
         prepareForRendering(drawerId, supportedTypes, keepInternalCopy = true, _shareTileUpdateStamp = null) {
 
+            const fin = () => {
                 // Locked update of render target,
                 if (_shareTileUpdateStamp) {
                     for (let tile of this._tiles) {
@@ -237,15 +238,16 @@
                         }
                     }
                 }
-
+            };
 
             // if not internal copy and we have no data, or we are ready to render, exit
             if (!this.loaded || supportedTypes.includes(this.type)) {
+                fin();
                 return $.Promise.resolve(this);
             }
 
             if (!keepInternalCopy) {
-                return this.transformTo(supportedTypes);
+                return this.transformTo(supportedTypes).then(fin);
             }
 
             // we can get here only if we want to render incompatible type
@@ -257,6 +259,7 @@
             internalCache = internalCache[drawerId];
             if (internalCache) {
                 // already done
+                fin();
                 return $.Promise.resolve(this);
             } else {
                 internalCache = this[DRAWER_INTERNAL_CACHE][drawerId] = new $.SimpleCacheRecord();
@@ -269,7 +272,8 @@
             internalCache.withTileReference(this._tRef);
             const selectedFormat = conversionPath[conversionPath.length - 1].target.value;
             return $.convertor.convert(this._tRef, this.data, this.type, selectedFormat).then(data => {
-                internalCache.setDataAs(data, selectedFormat);
+                internalCache.setDataAs(data, selectedFormat);  // synchronous, SimpleCacheRecord
+                fin();
                 return this;
             });
         }
@@ -530,8 +534,6 @@
                 const internal = this[DRAWER_INTERNAL_CACHE];
                 if (internal) {
                     for (let iCache in internal) {
-                        // TODO: if update will be greedy uncomment (see below)
-                        //internal[iCache].withTileReference(this._tRef);
                         internal[iCache].setDataAs(data, type);
                     }
                 }
@@ -550,8 +552,6 @@
                 const internal = this[DRAWER_INTERNAL_CACHE];
                 if (internal) {
                     for (let iCache in internal) {
-                        // TODO: if update will be greedy uncomment (see below)
-                        //internal[iCache].withTileReference(this._tRef);
                         internal[iCache].setDataAs(data, type);
                     }
                 }
@@ -898,7 +898,6 @@
         cloneCache(options) {
             const theTile = options.tile;
             const cacheKey = options.copyTargetKey;
-            //todo consider zombie drop support and custom queue for working cache items only
             const cacheRecord = this._cachesLoaded[cacheKey] || this._zombiesLoaded[cacheKey];
             $.console.assert(cacheRecord, "[TileCache.cloneCache] attempt to clone non-existent cache %s!", cacheKey);
             $.console.assert(!this._cachesLoaded[options.newCacheKey],

src/tiledimage.js

@@ -290,7 +290,6 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
      */
     requestInvalidate: function (viewportOnly, tStamp, restoreTiles = true) {
         tStamp = tStamp || $.now();
-        // this.invalidatedAt = tStamp; //todo document, or remove by something nicer
         const tiles = viewportOnly ? this._lastDrawn.map(x => x.tile) : this._tileCache.getLoadedTilesFor(this);
         this.viewer.world.requestTileInvalidateEvent(tiles, tStamp, restoreTiles);
     },

src/webgldrawer.js

@@ -854,10 +854,6 @@
             const _this = this;
             const tex2DCompatibleLoader = (tile, data) => {
                 let tiledImage = tile.tiledImage;
-                //todo verify we are calling conversion just right amount of time!
-                // e.g. no upload of cpu-existing texture
-                // also check textures are really getting destroyed (it is tested, but also do this with demos)
-
                 let gl = _this._gl;
 
                 // create a gl Texture for this tile and bind the canvas with the image data