Adding status info to DownloadUIItem and piping it through.

chrome/browser/android/offline_pages/downloads/offline_page_download_bridge.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/offline_pages/downloads/offline_page_download_bridge.h"
 
 #include <vector>
 
 #include "base/android/jni_string.h"
 #include "base/bind.h"
@@ skipping 24 matching lines @@
 #include "url/gurl.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::JavaParamRef;
 using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
 
+namespace {
+const char kDownloadUIAdapterKey[] = "download-ui-adapter";
+}
+
 namespace offline_pages {
 namespace android {
 
 namespace {
 
+class DownloadUIAdapterDelegate : public DownloadUIAdapter::Delegate {
+ public:
+  explicit DownloadUIAdapterDelegate(OfflinePageModel *model);
+
+  // DownloadUIAdapter::Delegate
+  bool IsVisibleInUI(const ClientId& client_id) override;
+
+ private:
+  // Not owned, cached service pointer.
+  OfflinePageModel* model_;
+};
+
+DownloadUIAdapterDelegate::DownloadUIAdapterDelegate(OfflinePageModel *model)
+  : model_(model) {
+}
+
+bool DownloadUIAdapterDelegate::IsVisibleInUI(const ClientId& client_id) {
+  const std::string& name_space = client_id.name_space;
+  return model_->GetPolicyController()->IsSupportedByDownload(name_space) &&
+         base::IsValidGUID(client_id.id);
+}
+
 // TODO(dewittj): Move to Download UI Adapter.
 content::WebContents* GetWebContentsFromJavaTab(
     const ScopedJavaGlobalRef<jobject>& j_tab_ref) {
   JNIEnv* env = AttachCurrentThread();
   TabAndroid* tab = TabAndroid::GetNativeTab(env, j_tab_ref);
   if (!tab)
     return nullptr;
 
   return tab->web_contents();
 }
@@ skipping 119 matching lines @@
 }
 
 void ToJavaOfflinePageDownloadItemList(
     JNIEnv* env,
     jobject j_result_obj,
     const std::vector<const DownloadUIItem*>& items) {
   for (const auto item : items) {
     Java_OfflinePageDownloadBridge_createDownloadItemAndAddToList(
         env, j_result_obj, ConvertUTF8ToJavaString(env, item->guid),
         ConvertUTF8ToJavaString(env, item->url.spec()),
+        item->download_state,
+        item->download_progress.current,
+        item->download_progress.max,
         ConvertUTF16ToJavaString(env, item->title),
         ConvertUTF8ToJavaString(env, item->target_path.value()),
         item->start_time.ToJavaTime(), item->total_bytes);
   }
 }
 
 ScopedJavaLocalRef<jobject> ToJavaOfflinePageDownloadItem(
     JNIEnv* env,
     const DownloadUIItem& item) {
   return Java_OfflinePageDownloadBridge_createDownloadItem(
       env, ConvertUTF8ToJavaString(env, item.guid),
       ConvertUTF8ToJavaString(env, item.url.spec()),
+      item.download_state,
+      item.download_progress.current,
+      item.download_progress.max,
       ConvertUTF16ToJavaString(env, item.title),
       ConvertUTF8ToJavaString(env, item.target_path.value()),
       item.start_time.ToJavaTime(), item.total_bytes);
 }
 
 std::vector<int64_t> FilterRequestsByGuid(
     std::vector<std::unique_ptr<SavePageRequest>> requests,
     const std::string& guid,
     ClientPolicyController* policy_controller) {
   std::vector<int64_t> request_ids;
@@ skipping 224 matching lines @@
 
 static jlong Init(JNIEnv* env,
                   const JavaParamRef<jobject>& obj,
                   const JavaParamRef<jobject>& j_profile) {
   content::BrowserContext* browser_context =
       ProfileAndroid::FromProfileAndroid(j_profile);
 
   OfflinePageModel* offline_page_model =
       OfflinePageModelFactory::GetForBrowserContext(browser_context);
 
-  DownloadUIAdapter* adapter =
-      DownloadUIAdapter::FromOfflinePageModel(offline_page_model);
+  DownloadUIAdapter* adapter = static_cast<DownloadUIAdapter*>(
+      offline_page_model->GetUserData(kDownloadUIAdapterKey));
+
+  if (!adapter) {
+    RequestCoordinator* request_coordinator =
+        RequestCoordinatorFactory::GetForBrowserContext(browser_context);
+    adapter = new DownloadUIAdapter(
+        offline_page_model, request_coordinator,
+        base::MakeUnique<DownloadUIAdapterDelegate>(offline_page_model));
+    offline_page_model->SetUserData(kDownloadUIAdapterKey, adapter);
+  }
 
   return reinterpret_cast<jlong>(
       new OfflinePageDownloadBridge(env, obj, adapter, browser_context));
 }
 
 }  // namespace android
 }  // namespace offline_pages