Tests for TouchSelectoinControllerImpl.

views/touchui/touch_selection_controller_impl_unittest.cc

+// Copyright (c) 2011 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/utf_string_conversions.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/render_text.h"
+#include "views/controls/textfield/native_textfield_views.h"
+#include "views/controls/textfield/textfield.h"
+#include "views/test/views_test_base.h"
+#include "views/touchui/touch_selection_controller.h"
+#include "views/touchui/touch_selection_controller_impl.h"
+#include "views/widget/widget.h"
+
+namespace views {
+
+class TouchSelectionControllerImplTest : public ViewsTestBase {
+ public:
+  TouchSelectionControllerImplTest()
+      : widget_(NULL),
+        textfield_(NULL),
+        textfield_view_(NULL) {
+  }
+
+  virtual void SetUp() {
+    Widget::SetPureViews(true);
+  }
+
+  virtual void TearDown() {
+    Widget::SetPureViews(false);
+    if (widget_)
+      widget_->Close();
+    ViewsTestBase::TearDown();
+  }
+
+  void CreateTextfield() {
+    textfield_ = new Textfield();
+    widget_ = new Widget;
+    Widget::InitParams params(Widget::InitParams::TYPE_POPUP);
+    params.bounds = gfx::Rect(0, 0, 100, 100);
+    widget_->Init(params);
+    View* container = new View();
+    widget_->SetContentsView(container);
+    container->AddChildView(textfield_);
+
+    textfield_view_ = static_cast<NativeTextfieldViews*>(
+        textfield_->GetNativeWrapperForTesting());
+    textfield_view_->SetBoundsRect(params.bounds);
+    textfield_->set_id(1);
+
+    DCHECK(textfield_view_);
+    textfield_->RequestFocus();
+  }
+
+ protected:
+  gfx::Point GetCursorPosition(int cursor_pos) {
+    gfx::RenderText* render_text = textfield_view_->GetRenderText();
+    gfx::Rect cursor_bounds = render_text->GetCursorBounds(
+        gfx::SelectionModel(cursor_pos), false);
+    gfx::Rect display_rect = render_text->display_rect();
+    int total_offset_x = display_rect.x() + render_text->display_offset().x();
+    int total_offset_y = display_rect.y() + render_text->display_offset().y() +
+                         (display_rect.height() - cursor_bounds.height()) / 2;
+    return gfx::Point(cursor_bounds.x() + total_offset_x,
+                      cursor_bounds.bottom() + total_offset_y);
+  }
+
+  TouchSelectionControllerImpl* GetSelectionController() {
+    return static_cast<TouchSelectionControllerImpl*>(
+        textfield_view_->touch_selection_controller_.get());
+  }
+
+  void SimulateSelectionHandleDrag(gfx::Point p, int selection_handle) {
+    TouchSelectionControllerImpl* controller = GetSelectionController();
+    // Do the work of OnMousePressed().
+    if (selection_handle == 1)
+      controller->dragging_handle_ = controller->selection_handle_1_.get();
+    else
+      controller->dragging_handle_ = controller->selection_handle_2_.get();
+
+    controller->SelectionHandleDragged(p);
+
+    // Do the work of OnMouseReleased().
+    controller->dragging_handle_ = NULL;
+  }
+
+  // If textfield has selection, this method verifies that the selection handles
+  // are visible and at the correct positions (at the end points of selection).
+  // |cursor_at_selection_handle_1| is used to decide whether selection
+  // handle 1's position is matched against the start of selection or the end.
+  void VerifySelectionHandlePositions(bool cursor_at_selection_handle_1) {
+    if (textfield_->HasSelection()) {
+      EXPECT_TRUE(GetSelectionController()->IsSelectionHandle1Visible());
+      EXPECT_TRUE(GetSelectionController()->IsSelectionHandle2Visible());
+      ui::Range selected_range;
+      textfield_view_->GetSelectedRange(&selected_range);
+      gfx::Point selection_start = GetCursorPosition(selected_range.start());
+      gfx::Point selection_end = GetCursorPosition(selected_range.end());
+      gfx::Point sh1 = GetSelectionController()->GetSelectionHandle1Position();
+      gfx::Point sh2 = GetSelectionController()->GetSelectionHandle2Position();
+      sh1.Offset(10, 0); // offset by kSelectionHandleRadius.
+      sh2.Offset(10, 0);
+
+      if (cursor_at_selection_handle_1) {
+        EXPECT_EQ(sh1, selection_end);
+        EXPECT_EQ(sh2, selection_start);
+      } else {
+        EXPECT_EQ(sh1, selection_start);
+        EXPECT_EQ(sh2, selection_end);
+      }
+    } else {
+      EXPECT_FALSE(GetSelectionController()->IsSelectionHandle1Visible());
+      EXPECT_FALSE(GetSelectionController()->IsSelectionHandle2Visible());
+    }
+  }
+
+  Widget* widget_;
+
+  Textfield* textfield_;
+  NativeTextfieldViews* textfield_view_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerImplTest);
+};
+
+// Tests that the selection handles are placed appropriately when selection in
+// a Textfield changes.
+TEST_F(TouchSelectionControllerImplTest, SelectionInTextfieldTest) {
+  CreateTextfield();
+  textfield_->SetText(ASCIIToUTF16("some text"));
+
+  // Test selecting a range.
+  textfield_->SelectRange(ui::Range(3, 7));
+  VerifySelectionHandlePositions(false);
+
+  // Test selecting everything.
+  textfield_->SelectAll();
+  VerifySelectionHandlePositions(false);
+
+  // Test with no selection.
+  textfield_->ClearSelection();
+  VerifySelectionHandlePositions(false);
+
+  // Test with lost focus.
+  widget_->GetFocusManager()->ClearFocus();
+  VerifySelectionHandlePositions(false);
+
+  // Test with focus re-gained.
+  widget_->GetFocusManager()->SetFocusedView(textfield_);
+  VerifySelectionHandlePositions(false);
+}
+
+// Tests if the SelectRect callback is called appropriately when selection
+// handles are moved.
+TEST_F(TouchSelectionControllerImplTest, SelectRectCallbackTest) {
+  CreateTextfield();
+  textfield_->SetText(ASCIIToUTF16("textfield with selected text"));
+  textfield_->SelectRange(ui::Range(3, 7));
+
+  EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "tfie");
+  VerifySelectionHandlePositions(false);
+
+  // Drag selection handle 2 to right by 3 chars.
+  int x = textfield_->font().GetStringWidth(ASCIIToUTF16("ld "));
+  SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
+  EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "tfield ");
+  VerifySelectionHandlePositions(false);
+
+  // Drag selection handle 1 to the left by a large amount (selection should
+  // just stick to the beginning of the textfield).
+  SimulateSelectionHandleDrag(gfx::Point(-50, 0), 1);
+  EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "textfield ");
+  VerifySelectionHandlePositions(true);
+
+  // Drag selection handle 1 across selection handle 2.
+  x = textfield_->font().GetStringWidth(ASCIIToUTF16("textfield with "));
+  SimulateSelectionHandleDrag(gfx::Point(x, 0), 1);
+  EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "with ");
+  VerifySelectionHandlePositions(true);
+
+  // Drag selection handle 2 across selection handle 1.
+  x = textfield_->font().GetStringWidth(ASCIIToUTF16("with selected "));
+  SimulateSelectionHandleDrag(gfx::Point(x, 0), 2);
+  EXPECT_EQ(UTF16ToUTF8(textfield_->GetSelectedText()), "selected ");
+  VerifySelectionHandlePositions(false);
+}
+
+}  // namespace views