athena: Add support for virtual keyboard.

athena/virtual_keyboard/vk_webui_controller.cc

+// Copyright 2014 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 "athena/virtual_keyboard/vk_webui_controller.h"
+
+#include "athena/virtual_keyboard/vk_message_handler.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "grit/keyboard_resources.h"
+#include "grit/keyboard_resources_map.h"
+#include "ui/keyboard/keyboard_constants.h"
+#include "ui/keyboard/keyboard_util.h"
+
+namespace athena {
+
+namespace {
+
+content::WebUIDataSource* CreateKeyboardUIDataSource() {
+  content::WebUIDataSource* source =
+      content::WebUIDataSource::Create(keyboard::kKeyboardHost);
+
+  size_t count = 0;
+  const GritResourceMap* resources =
+      keyboard::GetKeyboardExtensionResources(&count);
+  source->SetDefaultResource(IDR_KEYBOARD_INDEX);
+
+  const std::string keyboard_host =
+      base::StringPrintf("%s/", keyboard::kKeyboardHost);
+  for (size_t i = 0; i < count; ++i) {
+    size_t offset = 0;
+    if (StartsWithASCII(std::string(resources[i].name), keyboard_host, false))
+      offset = keyboard_host.length();
+    source->AddResourcePath(resources[i].name + offset, resources[i].value);
+  }
+  return source;
+}
+
+}  // namespace
+
+////////////////////////////////////////////////////////////////////////////////
+// VKWebUIController:
+
+VKWebUIController::VKWebUIController(content::WebUI* web_ui)
+    : WebUIController(web_ui) {
+  content::BrowserContext* browser_context =
+      web_ui->GetWebContents()->GetBrowserContext();
+  web_ui->AddMessageHandler(new VKMessageHandler());
+  content::WebUIDataSource::Add(browser_context, CreateKeyboardUIDataSource());
+}
+
+VKWebUIController::~VKWebUIController() {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// VKWebUIControllerFactory:
+
+content::WebUI::TypeID VKWebUIControllerFactory::GetWebUIType(
+    content::BrowserContext* browser_context,
+    const GURL& url) const {
+  if (url == GURL(keyboard::kKeyboardURL))
+    return const_cast<VKWebUIControllerFactory*>(this);
+
+  return content::WebUI::kNoWebUI;
+}
+
+bool VKWebUIControllerFactory::UseWebUIForURL(
+    content::BrowserContext* browser_context,
+    const GURL& url) const {
+  return GetWebUIType(browser_context, url) != content::WebUI::kNoWebUI;
+}
+
+bool VKWebUIControllerFactory::UseWebUIBindingsForURL(
+    content::BrowserContext* browser_context,
+    const GURL& url) const {
+  return UseWebUIForURL(browser_context, url);
+}
+
+content::WebUIController* VKWebUIControllerFactory::CreateWebUIControllerForURL(
+    content::WebUI* web_ui,
+    const GURL& url) const {
+  if (url == GURL(keyboard::kKeyboardURL))
+    return new VKWebUIController(web_ui);
+  return NULL;
+}
+
+// static
+VKWebUIControllerFactory* VKWebUIControllerFactory::GetInstance() {
+  return Singleton<VKWebUIControllerFactory>::get();

[oshima, 2014/06/18 20:14:35]

I'm not fan of Singleton class/template but ok as this has no state

+}
+
+// protected
+VKWebUIControllerFactory::VKWebUIControllerFactory() {
+}
+
+VKWebUIControllerFactory::~VKWebUIControllerFactory() {
+}
+
+}  // namespace athena