MacViews: Implement Tab Dragging

chrome/test/base/interactive_test_utils.h

 // 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.
 
 #ifndef CHROME_TEST_BASE_INTERACTIVE_TEST_UTILS_H_
 #define CHROME_TEST_BASE_INTERACTIVE_TEST_UTILS_H_
 
 #include "chrome/browser/ui/view_ids.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "ui/base/test/ui_controls.h"
-
-namespace gfx {
-class Point;
-}
+#include "ui/gfx/geometry/point.h"
 
 #if defined(TOOLKIT_VIEWS)
 namespace views {
 class View;
 }
 #endif
 
 namespace ui_test_utils {
 
+#if defined(OS_MACOSX)
+// Moves the mouse to the |from| position, presses left mouse button,
+// then moves mouse to the |to| position and releases left mouse button.
+// |steps| indicates number of intermediate points that are interpolated between
+// |from| and |to|.
+void DragAndDrop(const gfx::Point& from, const gfx::Point& to, int steps = 1);

[tapted, 2016/06/01 11:29:55]

nit: move below DragAndDropSequnce (it's usually nice to have types/class
declarations ordered first in any scope)

[themblsha, 2016/06/03 17:42:07]

Done.

+
+// Represents an operation in a sequence of simulated drag and drop events
+// executed asynchronously by DragAndDropSequence.
+class DragAndDropOperation {
+ public:
+  enum class Type {
+    Move,
+    MouseDown,
+    MouseUp
+  };
+
+  static DragAndDropOperation Move(const gfx::Point& p);
+  static DragAndDropOperation MouseDown();
+  static DragAndDropOperation MouseUp();
+
+  Type type() const { return type_; }
+  const gfx::Point& point() const { return point_; }
+
+ private:
+  DragAndDropOperation(Type type, const gfx::Point& p)
+      : type_(type), point_(p) {}
+
+  Type type_;
+  gfx::Point point_;
+};
+
+// Performs a series of drag and drop operations while spinning a RunLoop on the
+// main thread. If there are nested eventloops on the main thread's queue, our

[tapted, 2016/06/01 11:29:55]

I don't think we need the sentence "If there are nested eventloops...stuck." 

[themblsha, 2016/06/03 17:42:07]

Done.

+// helper RunLoop won't quit and we'll get stuck.
+// BridgedNativeWidget::RunMoveLoop() creates a RunLoop, so we need to ensure
+// that sequence is finished before trying to return from the function.
+void DragAndDropSequence(const std::list<DragAndDropOperation>& operations);
+#endif  // OS_MACOSX
+
 // Brings the native window for |browser| to the foreground. Returns true on
 // success.
 bool BringBrowserWindowToFront(const Browser* browser) WARN_UNUSED_RESULT;
 
 // Returns true if the View is focused.
 bool IsViewFocused(const Browser* browser, ViewID vid);
 
 // Simulates a mouse click on a View in the browser.
 void ClickOnView(const Browser* browser, ViewID vid);
 
@@ skipping 109 matching lines @@
 // ui_controls_linux.cc and ui_controls_mac.cc
 void ClickTask(ui_controls::MouseButton button,
                int state,
                const base::Closure& followup);
 
 }  // namespace internal
 
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_BASE_INTERACTIVE_TEST_UTILS_H_