[tor-commits] [tor-browser/tor-browser-60.2.1esr-8.5-1] Bug 1448305 - Fall back to the memory cache when a shortcut is created. r=JanH

[gk@xxxxxxxxxxxxxx]

commit 1387995d6a8764a730deac5a6d50a1f2ffa3ca0e
Author: Rob Wu <rob@xxxxxxxx>
Date:   Thu Jun 21 15:36:56 2018 +0200

    Bug 1448305 - Fall back to the memory cache when a shortcut is created. r=JanH
---
 .../mozilla/gecko/icons/TestIconRequestBuilder.java | 21 +++++++++++++++++++++
 .../java/org/mozilla/gecko/GeckoApplication.java    | 16 ++++++++++++++--
 .../org/mozilla/gecko/icons/IconRequestBuilder.java | 10 ++++++++++
 3 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/mobile/android/app/src/test/java/org/mozilla/gecko/icons/TestIconRequestBuilder.java b/mobile/android/app/src/test/java/org/mozilla/gecko/icons/TestIconRequestBuilder.java
index 066febaf2b93..2d80ad7ae5f6 100644
--- a/mobile/android/app/src/test/java/org/mozilla/gecko/icons/TestIconRequestBuilder.java
+++ b/mobile/android/app/src/test/java/org/mozilla/gecko/icons/TestIconRequestBuilder.java
@@ -172,6 +172,27 @@ public class TestIconRequestBuilder {
     }
 
     @Test
+    public void testSkipMemoryIf() {
+        IconRequest request = Icons.with(RuntimeEnvironment.application)
+                .pageUrl(TEST_PAGE_URL_1)
+                .build();
+
+        Assert.assertFalse(request.shouldSkipMemory());
+
+        request.modify()
+                .skipMemoryIf(true)
+                .deferBuild();
+
+        Assert.assertTrue(request.shouldSkipMemory());
+
+        request.modify()
+                .skipMemoryIf(false)
+                .deferBuild();
+
+        Assert.assertFalse(request.shouldSkipMemory());
+    }
+
+    @Test
     public void testExecutionOnBackgroundThread() {
         IconRequest request = Icons.with(RuntimeEnvironment.application)
                 .pageUrl(TEST_PAGE_URL_1)
diff --git a/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java b/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java
index 9a5e89dc1579..e896134e0af9 100644
--- a/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java
+++ b/mobile/android/base/java/org/mozilla/gecko/GeckoApplication.java
@@ -613,15 +613,27 @@ public class GeckoApplication extends Application
     }
 
     public static void createBrowserShortcut(final String title, final String url) {
-      Icons.with(GeckoAppShell.getApplicationContext())
+        createBrowserShortcut(title, url, true);
+    }
+
+    private static void createBrowserShortcut(final String title, final String url, final boolean skipMemoryCache) {
+        // Try to fetch the icon from the disk cache. The memory cache is
+        // initially skipped to avoid the use of downsized icons.
+        Icons.with(GeckoAppShell.getApplicationContext())
               .pageUrl(url)
               .skipNetwork()
-              .skipMemory()
+              .skipMemoryIf(skipMemoryCache)
               .forLauncherIcon()
               .build()
               .execute(new IconCallback() {
                   @Override
                   public void onIconResponse(final IconResponse response) {
+                      if (response.isGenerated() && skipMemoryCache) {
+                          // The icon was not found in the disk cache.
+                          // Fall back to the memory cache.
+                          createBrowserShortcut(title, url, false);
+                          return;
+                      }
                       createShortcutWithIcon(title, url, response.getBitmap());
                   }
               });
diff --git a/mobile/android/base/java/org/mozilla/gecko/icons/IconRequestBuilder.java b/mobile/android/base/java/org/mozilla/gecko/icons/IconRequestBuilder.java
index b2fb46e3a39f..7e3ac5ce1395 100644
--- a/mobile/android/base/java/org/mozilla/gecko/icons/IconRequestBuilder.java
+++ b/mobile/android/base/java/org/mozilla/gecko/icons/IconRequestBuilder.java
@@ -107,6 +107,16 @@ public class IconRequestBuilder {
     }
 
     /**
+     * If shouldSkipMemory is true then skip the memory cache and do not return
+     * a previously loaded icon.
+     */
+    @CheckResult
+    public IconRequestBuilder skipMemoryIf(boolean shouldSkipMemory) {
+        internal.skipMemory = shouldSkipMemory;
+        return this;
+    }
+
+    /**
      * The icon will be used as (Android) launcher icon. The loaded icon will be scaled to the
      * preferred Android launcher icon size.
      */

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