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// Copyright (c) 2011 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/chromeos/status/memory_menu_button.h"
#include "base/process_util.h" // GetSystemMemoryInfo
#include "base/stringprintf.h"
#include "chrome/browser/chromeos/status/status_area_host.h"
#include "chrome/browser/memory_purger.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "views/widget/widget.h"
namespace {
// views::MenuItemView item ids
enum {
MEM_TOTAL_ITEM,
MEM_FREE_ITEM,
MEM_BUFFERS_ITEM,
MEM_CACHE_ITEM,
SHMEM_ITEM,
PURGE_MEMORY_ITEM,
};
} // namespace
namespace chromeos {
// Delay between updates, in seconds.
const int kUpdateIntervalSeconds = 5;
MemoryMenuButton::MemoryMenuButton(StatusAreaHost* host)
: StatusAreaButton(host, this),
mem_total_(0),
shmem_(0),
mem_free_(0),
mem_buffers_(0),
mem_cache_(0) {
UpdateTextAndSetNextTimer();
}
MemoryMenuButton::~MemoryMenuButton() {
}
void MemoryMenuButton::UpdateTextAndSetNextTimer() {
UpdateText();
timer_.Start(base::TimeDelta::FromSeconds(kUpdateIntervalSeconds), this,
&MemoryMenuButton::UpdateTextAndSetNextTimer);
}
void MemoryMenuButton::UpdateText() {
base::GetSystemMemoryInfo(&mem_total_, &mem_free_, &mem_buffers_, &mem_cache_,
&shmem_);
std::wstring label = base::StringPrintf(L"%d MB", mem_free_ / 1024);
SetText(label);
std::wstring tooltip = base::StringPrintf(
L"%d MB total\n%d MB free\n%d MB buffers\n%d MB cache\n%d MB shmem",
mem_total_ / 1024,
mem_free_ / 1024,
mem_buffers_ / 1024,
mem_cache_ / 1024,
shmem_ / 1024);
SetTooltipText(tooltip);
SchedulePaint();
}
// MemoryMenuButton, views::MenuDelegate implementation:
std::wstring MemoryMenuButton::GetLabel(int id) const {
switch (id) {
case MEM_TOTAL_ITEM:
return StringPrintf(L"%d MB total", mem_total_ / 1024);
case MEM_FREE_ITEM:
return StringPrintf(L"%d MB free", mem_free_ / 1024);
case MEM_BUFFERS_ITEM:
return StringPrintf(L"%d MB buffers", mem_buffers_ / 1024);
case MEM_CACHE_ITEM:
return StringPrintf(L"%d MB cache", mem_cache_ / 1024);
case SHMEM_ITEM:
return StringPrintf(L"%d MB shmem", shmem_ / 1024);
case PURGE_MEMORY_ITEM:
return L"Purge memory";
default:
return std::wstring();
}
}
bool MemoryMenuButton::IsCommandEnabled(int id) const {
switch (id) {
case PURGE_MEMORY_ITEM:
return true;
default:
return false;
}
}
void MemoryMenuButton::ExecuteCommand(int id) {
switch (id) {
case PURGE_MEMORY_ITEM:
MemoryPurger::PurgeAll();
break;
default:
NOTREACHED();
break;
}
}
int MemoryMenuButton::horizontal_padding() {
return 3;
}
// MemoryMenuButton, views::ViewMenuDelegate implementation:
void MemoryMenuButton::RunMenu(views::View* source, const gfx::Point& pt) {
// View passed in must be a views::MenuButton, i.e. the MemoryMenuButton.
DCHECK_EQ(source, this);
EnsureMenu();
gfx::Point screen_location;
views::View::ConvertPointToScreen(source, &screen_location);
gfx::Rect bounds(screen_location, source->size());
menu_->RunMenuAt(
source->GetWidget()->GetTopLevelWidget(),
this,
bounds,
views::MenuItemView::TOPRIGHT,
true);
}
// MemoryMenuButton, views::View implementation:
void MemoryMenuButton::EnsureMenu() {
// Just rebuild the menu each time to ensure the labels are up-to-date.
menu_.reset(new views::MenuItemView(this));
// Text for these items will be set by GetLabel().
menu_->AppendDelegateMenuItem(MEM_TOTAL_ITEM);
menu_->AppendDelegateMenuItem(MEM_FREE_ITEM);
menu_->AppendDelegateMenuItem(MEM_BUFFERS_ITEM);
menu_->AppendDelegateMenuItem(MEM_CACHE_ITEM);
menu_->AppendDelegateMenuItem(SHMEM_ITEM);
// TODO(jamescook): Dump heap profiles?
menu_->AppendSeparator();
menu_->AppendDelegateMenuItem(PURGE_MEMORY_ITEM);
}
} // namespace chromeos
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