arc-app-launcher: Minimal support for ARC app launcher.

chrome/browser/ui/app_list/arc/arc_app_item.cc

+// Copyright 2015 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/ui/app_list/arc/arc_app_item.h"
+
+#include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
+#include "components/arc/arc_bridge_service.h"
+#include "content/public/browser/browser_thread.h"
+#include "extensions/browser/app_sorting.h"
+#include "extensions/browser/extension_prefs.h"
+#include "ui/app_list/app_list_constants.h"
+#include "ui/gfx/color_utils.h"
+#include "ui/gfx/image/image_skia_operations.h"
+
+namespace {
+
+gfx::ImageSkia CreateDisabledIcon(const gfx::ImageSkia& icon) {
+  const color_utils::HSL shift = {-1, 0, 0.6};
+  return gfx::ImageSkiaOperations::CreateHSLShiftedImage(icon, shift);
+}
+
+extensions::AppSorting* GetAppSorting(content::BrowserContext* context) {
+  return extensions::ExtensionPrefs::Get(context)->app_sorting();
+}
+
+}  // namespace
+
+// static
+const char ArcAppItem::kItemType[] = "ArcAppItem";
+
+ArcAppItem::ArcAppItem(
+    content::BrowserContext* context,
+    const app_list::AppListSyncableService::SyncItem* sync_item,
+    const std::string& id,
+    const std::string& name,
+    bool ready)
+    : app_list::AppListItem(id),
+      context_(context),
+      ready_(ready) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  arc_app_icon_.reset(new ArcAppIcon(context_,
+                                     id,
+                                     app_list::kGridIconDimension,
+                                     this));
+
+  SetName(name);
+  UpdateIcon();
+
+  if (sync_item && sync_item->item_ordinal.IsValid()) {
+    // An existing synced position exists, use that.
+    set_position(sync_item->item_ordinal);
+  } else {
+    // There is an ExtensionAppItem that uses extension::AppSorting to order
+    // its element. There is no commonly available sorting mechanism for app
+    // ordering so use the only one available from extension subsystem.
+    // Page is is the earliest non-full page.
+    const syncer::StringOrdinal& page =
+        GetAppSorting(context_)->GetNaturalAppPageOrdinal();
+    // And get next available pos in this page.
+    const syncer::StringOrdinal& pos =
+       GetAppSorting(context_)->CreateNextAppLaunchOrdinal(page);
+    set_position(pos);
+  }
+}
+
+ArcAppItem::~ArcAppItem() {
+}
+
+const char* ArcAppItem::GetItemType() const {
+  return ArcAppItem::kItemType;
+}
+
+void ArcAppItem::Activate(int event_flags) {
+  DCHECK(ready_);
+
+  ArcAppListPrefs* prefs = ArcAppListPrefs::Get(context_);
+  scoped_ptr<ArcAppListPrefs::AppInfo> app_info = prefs->GetApp(id());
+  if (!app_info) {
+    VLOG(2) << "Cannot launch unavailable app:" << id() << ".";
+    return;
+  }
+
+  arc::ArcBridgeService* bridge_service = arc::ArcBridgeService::Get();
+  if (!bridge_service ||
+      bridge_service->state() != arc::ArcBridgeService::State::READY) {
+    VLOG(2) << "Cannot launch app: " << app_info->package
+            << ". Bridge service is not ready.";

[jochen (gone - plz use gerrit), 2015/12/03 12:55:52]

what will the user see here?

[khmel1, 2015/12/03 14:12:42]

ARC app has not started and all ARC app icon at app  launcher should be grayed.

+    return;
+  }
+
+  bridge_service->LaunchApp(app_info->package, app_info->activity);
+}
+
+void ArcAppItem::SetReady(bool ready) {
+  if (ready_ == ready)
+    return;
+
+  ready_ = ready;
+  UpdateIcon();
+}
+
+void ArcAppItem::SetName(const std::string& name) {
+  SetNameAndShortName(name, name);
+}
+
+void ArcAppItem::UpdateIcon() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  gfx::ImageSkia icon = arc_app_icon_->image_skia();
+  if (!ready_)
+    icon = CreateDisabledIcon(icon);
+
+  SetIcon(icon);
+}
+
+void ArcAppItem::OnIconUpdated() {
+  UpdateIcon();
+}