alternate ntp: implement right-aligned search token

chrome/browser/ui/views/location_bar/search_token_view.cc

+// Copyright (c) 2013 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/views/location_bar/search_token_view.h"
+
+#include "base/logging.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/canvas.h"
+#include "ui/views/controls/label.h"
+
+SearchTokenView::SearchTokenView()
+    : label_(new views::Label()) {
+  label_->SetAutoColorReadabilityEnabled(false);
+  AddChildView(label_);
+}
+
+SearchTokenView::~SearchTokenView() {
+}
+
+void SearchTokenView::SetFont(const gfx::Font& font) {
+  label_->SetFont(font);
+}
+
+void SearchTokenView::SetBackgroundColor(SkColor color) {
+  label_->SetBackgroundColor(color);
+}
+
+void SearchTokenView::SetForegroundColor(SkColor color) {
+  label_->SetEnabledColor(color);
+}
+
+void SearchTokenView::SetSearchProvider(const string16& search_provider) {
+  if (search_provider_ == search_provider)
+    return;
+  search_provider_ = search_provider;
+  if (!search_provider_.empty()) {
+    label_->SetText(l10n_util::GetStringFUTF16(IDS_OMNIBOX_SEARCH_TOKEN_TEXT,
+                                               search_provider_));
+  }
+}
+
+gfx::Size SearchTokenView::GetPreferredSize() {
+  return label_->GetPreferredSize();
+}
+
+void SearchTokenView::Layout() {
+  label_->SetBounds(0, 0, label_->GetPreferredSize().width(), height());
+}
+
+void SearchTokenView::OnPaint(gfx::Canvas* canvas) {
+  // Paint the background color.
+  canvas->DrawColor(label_->background_color());
+}