Redesigns the text input focus handling.

ui/views/controls/webview/webview_unittest.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 "ui/views/controls/webview/webview.h"
+
+#include "base/command_line.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/test/test_browser_context.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/aura/test/aura_test_helper.h"
+#include "ui/base/ime/text_input_focus_manager.h"
+#include "ui/base/ui_base_switches.h"
+#include "ui/compositor/test/context_factories_for_test.h"
+#include "ui/views/test/webview_test_helper.h"
+#include "ui/views/widget/widget.h"
+
+namespace {
+
+class WebViewTest : public testing::Test {
+ public:
+  WebViewTest() : widget_(NULL), webview_(NULL) {}
+
+  virtual void SetUp() {
+    testing::Test::SetUp();
+
+    ui::InitializeContextFactoryForTests(false);
+
+    aura_test_helper_.reset(
+        new aura::test::AuraTestHelper(base::MessageLoopForUI::current()));
+    aura_test_helper_->SetUp();
+
+    InitWebView();
+  }
+
+  virtual void TearDown() {
+    if (widget_)
+      widget_->Close();
+
+    aura_test_helper_->TearDown();
+
+    ui::TerminateContextFactoryForTests();
+
+    testing::Test::TearDown();
+  }
+
+ protected:
+  views::WebView* webview() { return webview_; }
+  content::BrowserContext* browser_context() { return &browser_context_; }
+
+ private:
+  void InitWebView() {
+    // WebViewTest.TextInputClientIsUpToDate needs kEnableTextInputFocusManager
+    // flag to be enabled.
+    base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
+    cmd_line->AppendSwitch(switches::kEnableTextInputFocusManager);
+
+    widget_ = new views::Widget();
+    views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
+    params.context = aura_test_helper_->root_window();
+    params.bounds = gfx::Rect(100, 100, 100, 100);
+    widget_->Init(params);
+
+    webview_ = new views::WebView(browser_context());
+    widget_->SetContentsView(webview_);
+
+    widget_->Activate();

[sky, 2014/04/25 18:21:51]

If these rely on activation shouldn't they be in interactive ui tests? Otherwise
aren't they going to be racy?

[Yuki, 2014/04/28 12:59:29]

My understanding is that we have only one widget and one webview here, and we
don't run the message loop, so there shouldn't be a race condition.

The reason of the call to Activate() is because
FocusManager::FocusTextInputClient() checks widget_->IsActive().  That's the
only reason.

I want to keep this test small and simple as much as possible.  So I don't want
to change this to an interactive ui test as long as there is no problem.

[sky, 2014/04/28 14:46:39]

I agree with you on keeping the test small, but Activate and other similar
messages are going to effectively pump some messages. I think this can lead to a
racy test.

[Yuki, 2014/05/01 14:11:51]

Okay, I've moved the test to interactive_ui_tests following the way of
WidgetTestInteractive in ui/views/widget/widget_interactive_uitest.cc.  Since
I'm not familiar with interactive_ui_tests, please let me know if I'm wrong with
something.

+    widget_->Show();
+  }
+
+  views::Widget* widget_;
+  views::WebView* webview_;
+  scoped_ptr<aura::test::AuraTestHelper> aura_test_helper_;
+  content::TestBrowserContext browser_context_;
+  views::WebViewTestHelper webview_test_helper_;
+  content::TestBrowserThreadBundle browser_thread_bundle_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebViewTest);
+};
+
+TEST_F(WebViewTest, TextInputClientIsUpToDate) {
+  webview()->SetEmbedFullscreenWidgetMode(true);
+
+  ui::TextInputFocusManager* text_input_focus_manager =
+      ui::TextInputFocusManager::GetInstance();
+  const ui::TextInputClient* null_text_input_client = NULL;
+
+  EXPECT_EQ(null_text_input_client, webview()->GetTextInputClient());
+  EXPECT_EQ(text_input_focus_manager->GetFocusedTextInputClient(),
+            webview()->GetTextInputClient());
+
+  // Case 1: Creates a new WebContents.
+  webview()->GetWebContents();
+  webview()->RequestFocus();
+  ui::TextInputClient* client1 = webview()->GetTextInputClient();
+  EXPECT_NE(null_text_input_client, client1);
+  EXPECT_EQ(text_input_focus_manager->GetFocusedTextInputClient(), client1);
+
+  // Case 2: Replaces a WebContents by SetWebContents().
+  content::WebContents::CreateParams params(browser_context());
+  scoped_ptr<content::WebContents> web_contents(
+      content::WebContents::Create(params));
+  webview()->SetWebContents(web_contents.get());
+  ui::TextInputClient* client2 = webview()->GetTextInputClient();
+  EXPECT_NE(null_text_input_client, client2);
+  EXPECT_EQ(text_input_focus_manager->GetFocusedTextInputClient(), client2);
+  EXPECT_NE(client1, client2);
+}
+
+}  // namespace