Add OptionsUI and its handler for multiple displays.

chrome/browser/ui/webui/options2/chromeos/display_options_handler.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 "chrome/browser/ui/webui/options2/chromeos/display_options_handler.h"
+
+#include <string>
+
+#include "ash/monitor/monitor_controller.h"
+#include "ash/shell.h"
+#include "base/logging.h"
+#include "base/json/json_value_converter.h"
+#include "base/values.h"
+#include "chromeos/monitor/output_configurator.h"
+#include "content/public/browser/web_ui.h"
+#include "grit/generated_resources.h"
+#include "ui/aura/env.h"
+#include "ui/aura/monitor_manager.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/rect.h"
+
+namespace chromeos {
+namespace options2 {
+
+using ash::internal::MonitorController;
+
+DisplayOptionsHandler::DisplayOptionsHandler() {
+  aura::Env::GetInstance()->monitor_manager()->AddObserver(this);
+}
+
+DisplayOptionsHandler::~DisplayOptionsHandler() {
+  aura::Env::GetInstance()->monitor_manager()->RemoveObserver(this);
+}
+
+void DisplayOptionsHandler::GetLocalizedValues(
+    DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+  RegisterTitle(localized_strings, "displayOptionsPage",
+                IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_TAB_TITLE);
+  localized_strings->SetString("startMirroring", l10n_util::GetStringUTF16(
+      IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_START_MIRRORING));
+  localized_strings->SetString("stopMirroring", l10n_util::GetStringUTF16(
+      IDS_OPTIONS_SETTINGS_DISPLAY_OPTIONS_STOP_MIRRORING));
+}
+
+void DisplayOptionsHandler::InitializeHandler() {
+  DCHECK(web_ui());
+  UpdateDisplaySectionVisibility();
+}
+
+void DisplayOptionsHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "getDisplayInfo",
+      base::Bind(&DisplayOptionsHandler::HandleDisplayInfo,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "setMirroring",
+      base::Bind(&DisplayOptionsHandler::HandleMirroring,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "setDisplayLayout",
+      base::Bind(&DisplayOptionsHandler::HandleDisplayLayout,
+                 base::Unretained(this)));
+}
+
+void DisplayOptionsHandler::OnDisplayBoundsChanged(
+    const gfx::Display& display) {
+  SendDisplayInfo();
+}
+
+void DisplayOptionsHandler::OnDisplayAdded(const gfx::Display& new_display) {
+  UpdateDisplaySectionVisibility();
+  SendDisplayInfo();
+}
+
+void DisplayOptionsHandler::OnDisplayRemoved(const gfx::Display& old_display) {
+  UpdateDisplaySectionVisibility();
+  SendDisplayInfo();
+}
+
+void DisplayOptionsHandler::UpdateDisplaySectionVisibility() {
+  aura::MonitorManager* monitor_manager =
+      aura::Env::GetInstance()->monitor_manager();
+  chromeos::State output_state =
+      ash::Shell::GetInstance()->output_configurator()->output_state();
+  base::FundamentalValue show_options(
+      MonitorController::IsExtendedDesktopEnabled() &&
+      monitor_manager->GetNumDisplays() > 1 &&
+      output_state != chromeos::STATE_INVALID &&
+      output_state != chromeos::STATE_HEADLESS &&
+      output_state != chromeos::STATE_SINGLE);
+  web_ui()->CallJavascriptFunction(
+      "options.BrowserOptions.showDisplayOptions", show_options);
+}
+
+void DisplayOptionsHandler::SendDisplayInfo() {
+  aura::MonitorManager* monitor_manager =
+      aura::Env::GetInstance()->monitor_manager();
+  chromeos::OutputConfigurator* output_configurator =
+      ash::Shell::GetInstance()->output_configurator();
+  base::FundamentalValue mirroring(
+      output_configurator->output_state() == chromeos::STATE_DUAL_MIRROR);
+
+  base::ListValue displays;
+  for (size_t i = 0; i < monitor_manager->GetNumDisplays(); ++i) {
+    const gfx::Display& display = monitor_manager->GetDisplayAt(i);
+    const gfx::Rect& bounds = display.bounds();
+    base::DictionaryValue* js_display = new base::DictionaryValue();
+    js_display->SetDouble("id", display.id());
+    js_display->SetDouble("x", bounds.x());
+    js_display->SetDouble("y", bounds.y());
+    js_display->SetDouble("width", bounds.width());
+    js_display->SetDouble("height", bounds.height());
+    displays.Set(i, js_display);
+  }
+
+  MonitorController* monitor_controller =
+      ash::Shell::GetInstance()->monitor_controller();
+  base::FundamentalValue layout(static_cast<int>(
+      monitor_controller->secondary_display_layout()));
+
+  web_ui()->CallJavascriptFunction(
+      "options.DisplayOptions.setDisplayInfo",
+      mirroring, displays, layout);
+}
+
+void DisplayOptionsHandler::HandleDisplayInfo(
+    const base::ListValue* unused_args) {
+  SendDisplayInfo();
+}
+
+void DisplayOptionsHandler::HandleMirroring(const base::ListValue* args) {
+  DCHECK(!args->empty());
+  bool is_mirroring = false;
+  args->GetBoolean(0, &is_mirroring);
+  // We use 'PRIMARY_ONLY' for non-mirroring state for now.
+  // TODO(mukai): fix this and support multiple display modes.
+  chromeos::State new_state =
+      is_mirroring ? STATE_DUAL_MIRROR : STATE_DUAL_PRIMARY_ONLY;
+  ash::Shell::GetInstance()->output_configurator()->SetDisplayMode(new_state);
+  SendDisplayInfo();
+}
+
+void DisplayOptionsHandler::HandleDisplayLayout(const base::ListValue* args) {
+  double layout = -1;
+  if (!args->GetDouble(0, &layout)) {
+    LOG(ERROR) << "Invalid parameter";
+    return;
+  }
+  DCHECK_LE(MonitorController::TOP, layout);
+  DCHECK_GE(MonitorController::LEFT, layout);
+
+  ash::Shell::GetInstance()->monitor_controller()->SetSecondaryDisplayLayout(
+      static_cast<MonitorController::SecondaryDisplayLayout>(layout));
+  SendDisplayInfo();
+}
+
+}  // namespace options2
+}  // namespace chromeos