Backed out changeset bcd726a4a258 (bug 725268)

browser/base/content/browser-thumbnails.js

@@ -77,8 +77,11 @@ let gBrowserThumbnails = {
   },
 
   _capture: function Thumbnails_capture(aBrowser) {
-    if (this._shouldCapture(aBrowser))
-      this._pageThumbs.captureAndStore(aBrowser);
+    if (this._shouldCapture(aBrowser)) {
+      this._pageThumbs.capture(aBrowser.contentWindow, function (aInputStream) {
+        this._pageThumbs.store(aBrowser.currentURI.spec, aInputStream);
+      }.bind(this));
+    }
   },
 
   _delayedCapture: function Thumbnails_delayedCapture(aBrowser) {

browser/base/content/newtab/transformations.js

@@ -135,24 +135,16 @@ let gTransformation = {
    *        callback - the callback to call when finished
    */
   rearrangeSites: function Transformation_rearrangeSites(aSites, aOptions) {
+    let batch;
     let cells = gGrid.cells;
     let callback = aOptions && aOptions.callback;
     let unfreeze = aOptions && aOptions.unfreeze;
 
-    let batch = new Batch(function () {
-      if (aOptions && "callback" in aOptions)
-        aOptions.callback();
-
-      gGrid.unlock();
-    });
-
     if (callback) {
       batch = new Batch(callback);
       callback = function () batch.pop();
     }
 
-    gGrid.lock();
-
     aSites.forEach(function (aSite, aIndex) {
       // Do not re-arrange empty cells or the dragged site.
       if (!aSite || aSite == gDrag.draggedSite)

browser/base/content/newtab/updater.js

@@ -20,34 +20,29 @@ let gUpdater = {
     // Find all sites that remain in the grid.
     let sites = this._findRemainingSites(links);
 
-    Grid.lock();
+    let self = this;
 
     // Remove sites that are no longer in the grid.
     this._removeLegacySites(sites, function () {
       // Freeze all site positions so that we can move their DOM nodes around
       // without any visual impact.
-      this._freezeSitePositions(sites);
+      self._freezeSitePositions(sites);
 
       // Move the sites' DOM nodes to their new position in the DOM. This will
       // have no visual effect as all the sites have been frozen and will
       // remain in their current position.
-      this._moveSiteNodes(sites);
+      self._moveSiteNodes(sites);
 
       // Now it's time to animate the sites actually moving to their new
       // positions.
-      this._rearrangeSites(sites, function () {
+      self._rearrangeSites(sites, function () {
         // Try to fill empty cells and finish.
-        this._fillEmptyCells(links, function () {
-          gGrid.unlock();
-
-          if (aCallback)
-            aCallback();
-        });
+        self._fillEmptyCells(links, aCallback);
 
         // Update other pages that might be open to keep them synced.
         gAllPages.update(gPage);
-      }.bind(this));
-    }.bind(this));
+      });
+    });
   },
 
   /**

browser/components/thumbnails/PageThumbs.jsm

@@ -104,42 +104,43 @@ let PageThumbs = {
   },
 
   /**
-   * Captures a thumbnail for the given browser and stores it to the cache.
-   * @param aBrowser The browser to capture a thumbnail for.
-   * @param aCallback The function to be called when finished (optional).
+   * Stores the image data contained in the given canvas to the underlying
+   * storage.
+   * @param aKey The key to use for the storage.
+   * @param aInputStream The input stream containing the image data.
+   * @param aCallback The function to be called when the canvas data has been
+   *                  stored (optional).
    */
-  captureAndStore: function PageThumbs_captureAndStore(aBrowser, aCallback) {
-    this.capture(aBrowser.contentWindow, function (aInputStream) {
-      let telemetryStoreTime = new Date();
+  store: function PageThumbs_store(aKey, aInputStream, aCallback) {
+    let telemetryStoreTime = new Date();
 
-      function finish(aSuccessful) {
-        if (aSuccessful) {
-          Services.telemetry.getHistogramById("FX_THUMBNAILS_STORE_TIME_MS")
-            .add(new Date() - telemetryStoreTime);
-        }
-
-        if (aCallback)
-          aCallback(aSuccessful);
+    function finish(aSuccessful) {
+      if (aSuccessful) {
+        Services.telemetry.getHistogramById("FX_THUMBNAILS_STORE_TIME_MS")
+          .add(new Date() - telemetryStoreTime);
       }
 
-      // Get a writeable cache entry.
-      PageThumbsCache.getWriteEntry(aBrowser.currentURI.spec, function (aEntry) {
-        if (!aEntry) {
-          finish(false);
-          return;
-        }
+      if (aCallback)
+        aCallback(aSuccessful);
+    }
 
-        let outputStream = aEntry.openOutputStream(0);
+    // Get a writeable cache entry.
+    PageThumbsCache.getWriteEntry(aKey, function (aEntry) {
+      if (!aEntry) {
+        finish(false);
+        return;
+      }
 
-        // Write the image data to the cache entry.
-        NetUtil.asyncCopy(aInputStream, outputStream, function (aResult) {
-          let success = Components.isSuccessCode(aResult);
-          if (success)
-            aEntry.markValid();
+      let outputStream = aEntry.openOutputStream(0);
 
-          aEntry.close();
-          finish(success);
-        });
+      // Write the image data to the cache entry.
+      NetUtil.asyncCopy(aInputStream, outputStream, function (aResult) {
+        let success = Components.isSuccessCode(aResult);
+        if (success)
+          aEntry.markValid();
+
+        aEntry.close();
+        finish(success);
       });
     });
   },

browser/components/thumbnails/test/head.js

@@ -94,29 +94,34 @@ function whenLoaded(aElement, aCallback) {
  * @param aMessage The info message to print when comparing the pixel color.
  */
 function captureAndCheckColor(aRed, aGreen, aBlue, aMessage) {
-  let browser = gBrowser.selectedBrowser;
+  let window = gBrowser.selectedTab.linkedBrowser.contentWindow;
 
   // Capture the screenshot.
-  PageThumbs.captureAndStore(browser, function () {
-    let width = 100, height = 100;
-    let thumb = PageThumbs.getThumbnailURL(browser.currentURI.spec, width, height);
+  PageThumbs.capture(window, function (aData) {
+    let key = Date.now();
 
-    getXULDocument(function (aDocument) {
-      let htmlns = "http://www.w3.org/1999/xhtml";
-      let img = aDocument.createElementNS(htmlns, "img");
-      img.setAttribute("src", thumb);
+    // Store the thumbnail in the cache.
+    PageThumbs.store(key, aData, function () {
+      let width = 100, height = 100;
+      let thumb = PageThumbs.getThumbnailURL(key, width, height);
 
-      whenLoaded(img, function () {
-        let canvas = aDocument.createElementNS(htmlns, "canvas");
-        canvas.setAttribute("width", width);
-        canvas.setAttribute("height", height);
+      getXULDocument(function (aDocument) {
+        let htmlns = "http://www.w3.org/1999/xhtml";
+        let img = aDocument.createElementNS(htmlns, "img");
+        img.setAttribute("src", thumb);
 
-        // Draw the image to a canvas and compare the pixel color values.
-        let ctx = canvas.getContext("2d");
-        ctx.drawImage(img, 0, 0, width, height);
-        checkCanvasColor(ctx, aRed, aGreen, aBlue, aMessage);
+        whenLoaded(img, function () {
+          let canvas = aDocument.createElementNS(htmlns, "canvas");
+          canvas.setAttribute("width", width);
+          canvas.setAttribute("height", height);
 
-        next();
+          // Draw the image to a canvas and compare the pixel color values.
+          let ctx = canvas.getContext("2d");
+          ctx.drawImage(img, 0, 0, width, height);
+          checkCanvasColor(ctx, aRed, aGreen, aBlue, aMessage);
+
+          next();
+        });
       });
     });
   });