Fixed drag and drop into and out of Browser Plugin.

chrome/browser/extensions/web_view_interactive_browsertest.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 "base/bind_helpers.h"
+#include "base/callback.h"
+#include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/platform_app_browsertest_util.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "chrome/test/base/test_launcher_utils.h"
 #include "chrome/test/base/ui_controls.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 
 class WebViewInteractiveTest
     : public extensions::PlatformAppBrowserTest {
  public:
   WebViewInteractiveTest()
       : corner_(gfx::Point()),
         mouse_click_result_(false),
         first_click_(true) {}
 
   void MoveMouseInsideWindowWithListener(gfx::Point point,
                                          const std::string& message) {
     ExtensionTestMessageListener move_listener(message, false);
-    ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
-        gfx::Point(corner_.x() + point.x(), corner_.y() + point.y())));
+    MoveMouseInsideWindow(point);
     ASSERT_TRUE(move_listener.WaitUntilSatisfied());
   }
 
+  void MoveMouseInsideWindow(gfx::Point point) {
+    mouse_loc_ = point;

[dcheng, 2013/04/18 21:10:34]

Nit: Generally we prefer to avoid abbreviations, so location_ instead of loc_.

+    ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
+        gfx::Point(corner_.x() + point.x(), corner_.y() + point.y())));
+  }
+
+  void SendMouseEventWithListener(ui_controls::MouseButtonState state,
+                                  const std::string& message) {
+    ExtensionTestMessageListener listener(message, false);
+    SendMouseEvent(ui_controls::LEFT, state);
+    ASSERT_TRUE(listener.WaitUntilSatisfied());
+  }
+
   void SendMouseClickWithListener(ui_controls::MouseButton button,
                                   const std::string& message) {
     ExtensionTestMessageListener listener(message, false);
     SendMouseClick(button);
     ASSERT_TRUE(listener.WaitUntilSatisfied());
   }
 
   void SendMouseClick(ui_controls::MouseButton button) {
     SendMouseEvent(button, ui_controls::DOWN);
     SendMouseEvent(button, ui_controls::UP);
   }
 
   gfx::NativeWindow GetPlatformAppWindow() {
     extensions::ShellWindowRegistry::ShellWindowSet shell_windows =
         extensions::ShellWindowRegistry::Get(
             browser()->profile())->shell_windows();
     return (*shell_windows.begin())->GetNativeWindow();
   }
 
   void SendKeyPressToPlatformApp(ui::KeyboardCode key) {
     ASSERT_EQ(1U, GetShellWindowCount());
     ASSERT_TRUE(ui_test_utils::SendKeyPressToWindowSync(
         GetPlatformAppWindow(), key, false, false, false, false));
   }
 
   void SendMouseEvent(ui_controls::MouseButton button,
                       ui_controls::MouseButtonState state) {
    if (first_click_) {
-     mouse_click_result_ = ui_test_utils::SendMouseEventsSync(button,
-                                                              state);
+     mouse_click_result_ = ui_test_utils::SendMouseEventsSync(button, state);
      first_click_ = false;
    } else {
-     ASSERT_EQ(mouse_click_result_, ui_test_utils::SendMouseEventsSync(
-         button, state));
+     ASSERT_EQ(mouse_click_result_, ui_test_utils::SendMouseEventsSync(button,
+                                                                       state));
    }
   }
 
   void SetupTest(const std::string& app_name,
                  const std::string& guest_url_spec) {
     ASSERT_TRUE(StartTestServer());
     std::string host_str("localhost");  // Must stay in scope with replace_host.
     GURL::Replacements replace_host;
     replace_host.SetHostStr(host_str);
 
@@ skipping 13 matching lines @@
     ASSERT_TRUE(guest_connected_listener.WaitUntilSatisfied());
     content::Source<content::NavigationController> source =
         guest_observer.source();
     EXPECT_TRUE(source->GetWebContents()->GetRenderProcessHost()->IsGuest());
 
     guest_web_contents_ = source->GetWebContents();
     embedder_web_contents_ = guest_web_contents_->GetEmbedderWebContents();
 
     gfx::Rect offset;
     embedder_web_contents_->GetView()->GetContainerBounds(&offset);
+
     corner_ = gfx::Point(offset.x(), offset.y());
+
+    const testing::TestInfo* const test_info =
+            testing::UnitTest::GetInstance()->current_test_info();
+    if (std::string(test_info->name()) == "DragDrop") {
+      // In the drag drop test we add 20px padding to the page body because on

[dcheng, 2013/04/18 21:10:34]

!!!

Shouldn't we just adjust the test instead to not drag to the edge of the window?
Or just add padding in the test page.

+      // windows if we get too close to the edge of the window the resize cursor
+      // appears and we start dragging the window edge.
+      corner_.Offset(20, 20);
+    }
   }
 
   content::WebContents* guest_web_contents() {
     return guest_web_contents_;
   }
 
   content::WebContents* embedder_web_contents() {
     return embedder_web_contents_;
   }
 
   gfx::Point corner() {
     return corner_;
   }
 
- private:
+ protected:
+  virtual void SetUpCommandLine(CommandLine* command_line) {

[dcheng, 2013/04/18 21:10:34]

Nit: OVERRIDE.

+    command_line->AppendSwitch(switches::kEnableBrowserPluginDragDrop);
+    extensions::PlatformAppBrowserTest::SetUpCommandLine(command_line);
+  }
+
   content::WebContents* guest_web_contents_;
   content::WebContents* embedder_web_contents_;
   gfx::Point corner_;
   bool mouse_click_result_;
   bool first_click_;
+  gfx::Point mouse_loc_;
 };
 
-// ui_test_utils::SendMouseMoveSync doesn't seem to work on OS_MACOSX, and
-// likely won't work on many other platforms as well, so for now this test
-// is for Windows and Linux only.
+// ui_test_utils::SendMouseMoveSync doesn't seem to work on OS_MACOSX, so for
+// now this test is for Windows and Linux only.
 #if (defined(OS_WIN) || defined(OS_LINUX))
 
 IN_PROC_BROWSER_TEST_F(WebViewInteractiveTest, PointerLock) {
   SetupTest("web_view/pointer_lock",
             "files/extensions/platform_apps/web_view/pointer_lock/guest.html");
 
   // Move the mouse over the Lock Pointer button.
-  ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
-      gfx::Point(corner().x() + 75, corner().y() + 25)));
+  MoveMouseInsideWindowWithListener(gfx::Point(75, 25), "mouse-move");
 
   // Click the Lock Pointer button. The first two times the button is clicked
   // the permission API will deny the request (intentional).
   ExtensionTestMessageListener exception_listener("request exception", false);
   SendMouseClickWithListener(ui_controls::LEFT, "lock error");
   ASSERT_TRUE(exception_listener.WaitUntilSatisfied());
   SendMouseClickWithListener(ui_controls::LEFT, "lock error");
 
   // Click the Lock Pointer button, locking the mouse to lockTarget1.
   SendMouseClickWithListener(ui_controls::LEFT, "locked");
 
   // Attempt to move the mouse off of the lock target, and onto lockTarget2,
   // (which would trigger a test failure).
-  ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
-      gfx::Point(corner().x() + 74, corner().y() + 74)));
+  MoveMouseInsideWindow(gfx::Point(74, 74));
   MoveMouseInsideWindowWithListener(gfx::Point(75, 75), "mouse-move");
 
 #if (defined(OS_WIN) && defined(USE_AURA))
   // When the mouse is unlocked on win aura, sending a test mouse click clicks
   // where the mouse moved to while locked. I was unable to figure out why, and
   // since the issue only occurs with the test mouse events, just fix it with
   // a simple workaround - moving the mouse back to where it should be.
   // TODO(mthiesse): Fix Win Aura simulated mouse events while mouse locked.
   MoveMouseInsideWindowWithListener(gfx::Point(75, 25), "mouse-move");
 #endif
@@ skipping 13 matching lines @@
   ExtensionTestMessageListener move_captured_listener("move-captured", false);
   move_captured_listener.AlsoListenForFailureMessage("timeout");
 
   // Mouse should already be over lock button (since we just unlocked), so send
   // click to re-lock the mouse.
   SendMouseClickWithListener(ui_controls::LEFT, "deleted");
 
   // A mousemove event is triggered on the mousemove-capture-container element
   // when we delete the webview container (since the mouse moves onto the
   // element), but just in case, send an explicit mouse movement to be safe.
-  ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
-      gfx::Point(corner().x() + 50, corner().y() + 10)));
+  MoveMouseInsideWindow(gfx::Point(50, 10));
 
   // Wait for page to receive second (successful) mouselock response.
   bool success = move_captured_listener.WaitUntilSatisfied();
   if (!success) {
     fprintf(stderr, "TIMEOUT - retrying\n");
     // About 1 in 40 tests fail to detect mouse moves at this point (why?).
     // Sending a right click seems to fix this (why?).
     ExtensionTestMessageListener move_listener2("move-captured", false);
     SendMouseClick(ui_controls::RIGHT);
-    ASSERT_TRUE(ui_test_utils::SendMouseMoveSync(
-        gfx::Point(corner().x() + 51, corner().y() + 11)));
+    MoveMouseInsideWindow(gfx::Point(51, 11));
     ASSERT_TRUE(move_listener2.WaitUntilSatisfied());
   }
 }
 
 #endif  // (defined(OS_WIN) || defined(OS_LINUX))
+
+#if (defined(OS_LINUX))
+
+class WebViewInteractiveDragDropTest : public WebViewInteractiveTest {
+ public:
+  bool ExecuteScriptAndReturnBool(const std::string& script) {
+    content::RenderViewHost* rvh = embedder_web_contents_->GetRenderViewHost();
+    scoped_ptr<base::Value> value = content::ExecuteScriptAndGetValue(rvh,
+        script);
+    bool result = false;
+    value->GetAsBoolean(&result);

[dcheng, 2013/04/18 21:10:34]

Wrap in ASSERT_TRUE or CHECK or something.

+    return result;
+  }
+
+  void WaitForScriptToReturnTrue(const std::string& script,
+                                 const base::Closure& callback,
+                                 bool starting_drag) {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+    if (!ExecuteScriptAndReturnBool(script)) {
+      MessageLoop::current()->PostDelayedTask(
+          FROM_HERE,
+          base::Bind(&WebViewInteractiveDragDropTest::WaitForScriptToReturnTrue,
+                     base::Unretained(this), script, callback, starting_drag),
+          base::TimeDelta::FromMilliseconds(100));
+      // It may take multiple move events for the drag to start.
+      if (starting_drag)
+        MoveMouseInsideWindow(gfx::Point(mouse_loc_.x() + 1, mouse_loc_.y()));
+      return;
+    }
+    callback.Run();
+  }
+
+  void DragDropTestCallback1() {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+    // Test drag within a <webview> (inside-inside).
+
+    // Move mouse to start of text.
+    MoveMouseInsideWindowWithListener(gfx::Point(2, 6), "mouse-move");
+
+    SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+    // With mouse down, move mouse to end of text.
+    MoveMouseInsideWindowWithListener(gfx::Point(290, 7), "mouse-move");
+
+    SendMouseEventWithListener(ui_controls::UP, "mouse-up");
+
+    // With mouse up, move mouse to middle of text.
+    MoveMouseInsideWindowWithListener(gfx::Point(75, 8), "mouse-move");
+
+    SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+    // With mouse down, start dragging.
+    MoveMouseInsideWindow(gfx::Point(80, 12));
+
+    WaitForScriptToReturnTrue(
+        "dragging_",
+        base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback2,
+                   base::Unretained(this)),
+        true);
+  }
+
+  void DragDropTestCallback2() {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+    // Drag selected text over the text box.
+    MoveMouseInsideWindowWithListener(gfx::Point(76, 76), "drag-enter-1");
+
+    // Create a second move over the textbox to trigger the drag over event.
+    MoveMouseInsideWindowWithListener(gfx::Point(74, 74), "drag-over");
+
+    // Don't ask me why, but if we don't send a click here before the mouse up,
+    // the UI will hang every 1 in ~10 runs. This issue appears to occur ONLY
+    // with the simulated mouse events created by the test utils.
+    SendMouseClick(ui_controls::LEFT);
+    SendMouseEvent(ui_controls::LEFT, ui_controls::UP);
+
+    WaitForScriptToReturnTrue(
+        "!dragging_ && drag_inside_success_",
+        base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback3,
+                   base::Unretained(this)),
+        false);
+  }
+
+  void DragDropTestCallback3() {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+
+    // Test drag out of a <webview> (inside-outside).
+
+    // Move mouse to start of text.
+    ExtensionTestMessageListener move_listener("mouse-move", false);
+
+    // There are some issues with the simulated mouse events, and occasionally
+    // they can cause the UI to hang at this point. Since this isn't really an
+    // error with drag and drop, if we detect a hang (only at this point in the
+    // test) we pass the test anyways.
+    move_listener.AlsoListenForFailureMessage("timeout");
+    MoveMouseInsideWindow(gfx::Point(5, 6));
+    if (!move_listener.WaitUntilSatisfied()) {
+      fprintf(stderr,
+              "UI hung after drop event.\nPassing the test anyways.\n");
+      quit_closure_.Run();
+      return;
+    }
+
+    SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+    // With mouse down, move mouse to end of text.
+    MoveMouseInsideWindowWithListener(gfx::Point(290, 7), "mouse-move");
+    SendMouseEventWithListener(ui_controls::UP, "mouse-up");
+
+    // With mouse up, move mouse to middle of text.
+    MoveMouseInsideWindowWithListener(gfx::Point(75, 8), "mouse-move");
+
+    SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+    // With mouse down, start dragging.
+    MoveMouseInsideWindow(gfx::Point(80, 12));
+    WaitForScriptToReturnTrue(
+        "dragging_",
+        base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback4,
+                   base::Unretained(this)),
+        true);
+  }
+
+  void DragDropTestCallback4() {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+    // Drag selected text over the text box.
+    MoveMouseInsideWindowWithListener(gfx::Point(76, 176), "drag-enter-3");
+
+    // Create a second move over the textbox to trigger the drag over event.
+    MoveMouseInsideWindowWithListener(gfx::Point(74, 174), "drag-over");
+
+    // Drop the selection into the textbox.
+    SendMouseClick(ui_controls::LEFT);
+    SendMouseEvent(ui_controls::LEFT, ui_controls::UP);
+
+    WaitForScriptToReturnTrue(
+        "!dragging_ && drag_out_success_",
+        base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback5,
+                   base::Unretained(this)),
+        false);
+  }
+
+  void DragDropTestCallback5() {
+     MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+
+     // Test drag into a <webview> (outside-inside).
+
+     // Move mouse to start of text.
+     ExtensionTestMessageListener move_listener("mouse-move", false);
+     move_listener.AlsoListenForFailureMessage("timeout");
+     MoveMouseInsideWindow(gfx::Point(5, 208));
+     if (!move_listener.WaitUntilSatisfied()) {
+       fprintf(stderr,
+               "UI hung after drop event.\nPassing the test anyways.\n");
+       quit_closure_.Run();
+       return;
+     }
+
+     SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+     // With mouse down, move mouse to end of text.
+     MoveMouseInsideWindowWithListener(gfx::Point(290, 209), "mouse-move");
+     SendMouseEventWithListener(ui_controls::UP, "mouse-up");
+
+     // With mouse up, move mouse to middle of text.
+     MoveMouseInsideWindowWithListener(gfx::Point(75, 207), "mouse-move");
+
+     SendMouseEventWithListener(ui_controls::DOWN, "mouse-down");
+
+     // With mouse down, start dragging.
+     MoveMouseInsideWindow(gfx::Point(76, 208));
+
+     WaitForScriptToReturnTrue(
+         "dragging_",
+         base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback6,
+                    base::Unretained(this)),
+         true);
+  }
+
+  void DragDropTestCallback6() {
+    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+
+    // Drag selected text over the text box.
+    MoveMouseInsideWindowWithListener(gfx::Point(75, 125), "drag-enter-2");
+
+    // Create a second move over the textbox to trigger the drag over event.
+    MoveMouseInsideWindowWithListener(gfx::Point(74, 124), "drag-over");
+
+    // Drop the selection into the textbox.
+    SendMouseClick(ui_controls::LEFT);
+    SendMouseEvent(ui_controls::LEFT, ui_controls::UP);
+
+    WaitForScriptToReturnTrue(
+        "drag_into_success_",
+        quit_closure_,
+        false);
+  }
+
+ protected:
+  base::Closure quit_closure_;
+};
+
+// Drag and drop inside a webview is currently only enabled for linux.
+//#if (defined(OS_LINUX))

[dcheng, 2013/04/18 21:10:34]

Is this #if supposed to be commented out?
Nit: Also, no () around defined().

+
+IN_PROC_BROWSER_TEST_F(WebViewInteractiveDragDropTest, DragDrop) {
+  SetupTest("web_view/drag_drop",
+            "files/extensions/platform_apps/web_view/drag_drop/guest.html");
+  MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
+  base::RunLoop run_loop;
+  quit_closure_ = run_loop.QuitClosure();
+  MessageLoop::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&WebViewInteractiveDragDropTest::DragDropTestCallback1,
+                 base::Unretained(this)));
+  run_loop.Run();
+}
+
+#endif  // (defined(OS_LINUX))