views: support vertical-drag-to-end on textfields

ui/views/controls/textfield/textfield_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/textfield/textfield.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 21 matching lines @@
 #include "ui/events/event_processor.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/events/test/event_generator.h"
 #include "ui/gfx/render_text.h"
 #include "ui/strings/grit/ui_strings.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
 #include "ui/views/controls/textfield/textfield_model.h"
 #include "ui/views/controls/textfield/textfield_test_api.h"
 #include "ui/views/focus/focus_manager.h"
+#include "ui/views/style/platform_style.h"
 #include "ui/views/test/test_views_delegate.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/test/widget_test.h"
 #include "ui/views/widget/widget.h"
 #include "url/gurl.h"
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 
@@ skipping 1136 matching lines @@
   // Check that releasing in the same location does not alter the selection.
   textfield_->OnMouseReleased(release);
   EXPECT_EQ(text_right, textfield_->GetSelectedText());
   // Check that dragging from beyond the text length works too.
   textfield_->OnMousePressed(click_b);
   textfield_->OnMouseDragged(drag_left);
   textfield_->OnMouseReleased(release);
   EXPECT_EQ(textfield_->text(), textfield_->GetSelectedText());
 }
 
+// This test checks that dragging above the textfield selects to the beginning
+// and dragging below the textfield selects to the end, but only on platforms
+// where that is the expected behavior.
+TEST_F(TextfieldTest, DragUpOrDownSelectsToEnd) {
+  InitTextfield();
+  textfield_->SetText(ASCIIToUTF16("hello world"));
+  const base::string16 expected_up =
+      base::ASCIIToUTF16(PlatformStyle::kTextfieldDragVerticallyDragsToEnd ?
+                         "hello" : "lo");
+  const base::string16 expected_down =
+      base::ASCIIToUTF16(PlatformStyle::kTextfieldDragVerticallyDragsToEnd ?
+                         " world" : " w");
+  const int kStartX = GetCursorPositionX(5);
+  const int kDownX = GetCursorPositionX(7);
+  const int kUpX = GetCursorPositionX(3);
+  gfx::Point start_point(kStartX, 0);
+  gfx::Point down_point(kDownX, 500);
+  gfx::Point up_point(kUpX, -500);
+
+  ui::MouseEvent click_start(ui::ET_MOUSE_PRESSED, start_point, start_point,
+                             ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
+                             ui::EF_LEFT_MOUSE_BUTTON);
+  ui::MouseEvent click_down(ui::ET_MOUSE_PRESSED, down_point, down_point,
+                            ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
+                            ui::EF_LEFT_MOUSE_BUTTON);
+  ui::MouseEvent drag_up(ui::ET_MOUSE_DRAGGED, up_point, up_point,
+                           ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON, 0);
+  ui::MouseEvent drag_down(ui::ET_MOUSE_DRAGGED, down_point, down_point,
+                           ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON, 0);
+  ui::MouseEvent release_up(ui::ET_MOUSE_RELEASED, up_point, up_point,
+                           ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
+                           ui::EF_LEFT_MOUSE_BUTTON);
+  ui::MouseEvent release_down(ui::ET_MOUSE_RELEASED, down_point, down_point,
+                              ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
+                              ui::EF_LEFT_MOUSE_BUTTON);
+
+  textfield_->OnMousePressed(click_start);
+  textfield_->OnMouseDragged(drag_up);
+  textfield_->OnMouseReleased(release_up);
+  EXPECT_EQ(textfield_->GetSelectedText(), expected_up);
+
+  textfield_->OnMousePressed(click_start);
+  textfield_->OnMouseDragged(drag_down);
+  textfield_->OnMouseReleased(release_down);
+  EXPECT_EQ(textfield_->GetSelectedText(), expected_down);
+}
+
 #if defined(OS_WIN)
 TEST_F(TextfieldTest, DragAndDrop_AcceptDrop) {
   InitTextfield();
   textfield_->SetText(ASCIIToUTF16("hello world"));
 
   ui::OSExchangeData data;
   base::string16 string(ASCIIToUTF16("string "));
   data.SetString(string);
   int formats = 0;
   std::set<ui::Clipboard::FormatType> format_types;
@@ skipping 1361 matching lines @@
 
   textfield_->SetTextInputType(ui::TEXT_INPUT_TYPE_PASSWORD);
   ui::AXViewState state_protected;
   textfield_->GetAccessibleState(&state_protected);
   EXPECT_EQ(ui::AX_ROLE_TEXT_FIELD, state_protected.role);
   EXPECT_EQ(ASCIIToUTF16("********"), state_protected.value);
   EXPECT_TRUE(state_protected.HasStateFlag(ui::AX_STATE_PROTECTED));
 }
 
 }  // namespace views