Create ash memory monitor

ash/system/monitor/tray_monitor.cc

+// Copyright (c) 2012 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 "ash/system/monitor/tray_monitor.h"

[sadrul, 2012/10/29 23:50:57]

new line after this

[DaveMoore, 2012/10/30 16:18:49]

Done.

+#include "ash/system/tray/tray_item_view.h"
+#include "base/process_util.h"
+#include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
+#include "ui/base/text/bytes_formatting.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/border.h"
+
+namespace {
+const int kRefreshTimeoutMs = 1000;
+}
+namespace ash {
+namespace internal {
+
+TrayMonitor::TrayMonitor() : label_(NULL) {
+  refresh_timer_.Start(FROM_HERE,
+      base::TimeDelta::FromMilliseconds(kRefreshTimeoutMs),
+      this, &TrayMonitor::RefreshStats);
+}
+
+TrayMonitor::~TrayMonitor() {
+}
+
+views::View* TrayMonitor::CreateTrayView(user::LoginStatus status) {
+  TrayItemView* view = new TrayItemView;
+  view->CreateLabel();
+  label_ = view->label();

[sadrul, 2012/10/29 23:50:57]

You should reset |label_| to NULL in DestroyTrayView override

[DaveMoore, 2012/10/30 16:18:49]

Done.

[sadrul, 2012/10/30 16:44:47]

I actually meant from TrayMonitor::DestroyTrayView

+  label_->SetFont(
+      label_->font().DeriveFont(2, gfx::Font::BOLD));
+  label_->SetAutoColorReadabilityEnabled(false);
+  label_->SetEnabledColor(SK_ColorWHITE);
+  label_->SetBackgroundColor(SkColorSetARGB(0, 255, 255, 255));
+  label_->SetShadowColors(SkColorSetARGB(64, 0, 0, 0),
+                          SkColorSetARGB(64, 0, 0, 0));
+  label_->SetShadowOffset(0, 1);

[sadrul, 2012/10/29 23:50:57]

You can call SetupLabelForTray(view->labe()) to replace lines 33-40

[DaveMoore, 2012/10/30 16:18:49]

Done...didn't see that in tray_views.h
On 2012/10/29 23:50:57, sadrul wrote:

+  label_->set_border(views::Border::CreateEmptyBorder(0, 4, 0, 0));
+  return view;
+}
+
+void TrayMonitor::RefreshStats() {
+  base::SystemMemoryInfoKB mem_info;
+  base::GetSystemMemoryInfo(&mem_info);
+  std::string output;
+  string16 free_bytes =
+      ui::FormatBytes(static_cast<int64>(mem_info.free) * 1024);
+  output = StringPrintf("%s free", UTF16ToUTF8(free_bytes).c_str());
+  if (mem_info.gem_objects != -1 && mem_info.gem_size != -1) {
+    string16 gem_size = ui::FormatBytes(mem_info.gem_size);
+    output += StringPrintf(", %d gobjects alloced (%s)",
+                           mem_info.gem_objects,
+                           UTF16ToUTF8(gem_size).c_str());
+  }
+  label_->SetText(UTF8ToUTF16(output));
+}
+
+}  // namespace internal
+}  // namespace ash