// Copyright 2015 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 UI_ACCESSIBILITY_PLATFORM_TEST_AX_NODE_WRAPPER_H_
#define UI_ACCESSIBILITY_PLATFORM_TEST_AX_NODE_WRAPPER_H_

#include <set>
#include <string>
#include <vector>

#include "base/auto_reset.h"
#include "build/build_config.h"
#include "ui/accessibility/ax_node.h"
#include "ui/accessibility/ax_tree.h"
#include "ui/accessibility/platform/ax_platform_node.h"
#include "ui/accessibility/platform/ax_platform_node_delegate_base.h"

#if defined(OS_WIN)
namespace gfx {
const AcceleratedWidget kMockAcceleratedWidget = reinterpret_cast<HWND>(-1);
}
#endif

namespace ui {

// For testing, a TestAXNodeWrapper wraps an AXNode, implements
// AXPlatformNodeDelegate, and owns an AXPlatformNode.
class TestAXNodeWrapper : public AXPlatformNodeDelegateBase {
 public:
  // Create TestAXNodeWrapper instances on-demand from an AXTree and AXNode.
  static TestAXNodeWrapper* GetOrCreate(AXTree* tree, AXNode* node);

  // Set a global coordinate offset for testing.
  static void SetGlobalCoordinateOffset(const gfx::Vector2d& offset);

  // Get the last node which ShowContextMenu was called from for testing.
  static const AXNode* GetNodeFromLastShowContextMenu();

  // Get the last node which AccessibilityPerformAction default action was
  // called from for testing.
  static const AXNode* GetNodeFromLastDefaultAction();

  // Set the last node which AccessibilityPerformAction default action was
  // called for testing.
  static void SetNodeFromLastDefaultAction(AXNode* node);

  // Set a global scale factor for testing.
  static std::unique_ptr<base::AutoReset<float>> SetScaleFactor(float value);

  // Set a global indicating that AXPlatformNodeDelegates are for web content.
  static void SetGlobalIsWebContent(bool is_web_content);

  // When a hit test is called on |src_node_id|, return |dst_node_id| as
  // the result.
  static void SetHitTestResult(AXNode::AXID src_node_id,
                               AXNode::AXID dst_node_id);

  ~TestAXNodeWrapper() override;

  AXPlatformNode* ax_platform_node() const { return platform_node_; }
  void set_minimized(bool minimized) { minimized_ = minimized; }

  // Test helpers.
  void BuildAllWrappers(AXTree* tree, AXNode* node);
  void ResetNativeEventTarget();

  // AXPlatformNodeDelegate.
  const AXNodeData& GetData() const override;
  const AXTreeData& GetTreeData() const override;
  const AXTree::Selection GetUnignoredSelection() const override;
  AXNodePosition::AXPositionInstance CreateTextPositionAt(
      int offset) const override;
  gfx::NativeViewAccessible GetNativeViewAccessible() override;
  gfx::NativeViewAccessible GetParent() override;
  int GetChildCount() const override;
  gfx::NativeViewAccessible ChildAtIndex(int index) override;
  gfx::Rect GetBoundsRect(const AXCoordinateSystem coordinate_system,
                          const AXClippingBehavior clipping_behavior,
                          AXOffscreenResult* offscreen_result) const override;
  gfx::Rect GetInnerTextRangeBoundsRect(
      const int start_offset,
      const int end_offset,
      const AXCoordinateSystem coordinate_system,
      const AXClippingBehavior clipping_behavior,
      AXOffscreenResult* offscreen_result) const override;
  gfx::Rect GetHypertextRangeBoundsRect(
      const int start_offset,
      const int end_offset,
      const AXCoordinateSystem coordinate_system,
      const AXClippingBehavior clipping_behavior,
      AXOffscreenResult* offscreen_result) const override;
  gfx::NativeViewAccessible HitTestSync(
      int screen_physical_pixel_x,
      int screen_physical_pixel_y) const override;
  gfx::NativeViewAccessible GetFocus() const override;
  bool IsMinimized() const override;
  bool IsWebContent() const override;
  AXPlatformNode* GetFromNodeID(int32_t id) override;
  AXPlatformNode* GetFromTreeIDAndNodeID(const ui::AXTreeID& ax_tree_id,
                                         int32_t id) override;
  int GetIndexInParent() override;
  bool IsTable() const override;
  base::Optional<int> GetTableRowCount() const override;
  base::Optional<int> GetTableColCount() const override;
  base::Optional<int> GetTableAriaColCount() const override;
  base::Optional<int> GetTableAriaRowCount() const override;
  base::Optional<int> GetTableCellCount() const override;
  base::Optional<bool> GetTableHasColumnOrRowHeaderNode() const override;
  std::vector<int32_t> GetColHeaderNodeIds() const override;
  std::vector<int32_t> GetColHeaderNodeIds(int col_index) const override;
  std::vector<int32_t> GetRowHeaderNodeIds() const override;
  std::vector<int32_t> GetRowHeaderNodeIds(int row_index) const override;
  bool IsTableRow() const override;
  base::Optional<int> GetTableRowRowIndex() const override;
  bool IsTableCellOrHeader() const override;
  base::Optional<int> GetTableCellIndex() const override;
  base::Optional<int> GetTableCellColIndex() const override;
  base::Optional<int> GetTableCellRowIndex() const override;
  base::Optional<int> GetTableCellColSpan() const override;
  base::Optional<int> GetTableCellRowSpan() const override;
  base::Optional<int> GetTableCellAriaColIndex() const override;
  base::Optional<int> GetTableCellAriaRowIndex() const override;
  base::Optional<int32_t> GetCellId(int row_index,
                                    int col_index) const override;
  base::Optional<int32_t> CellIndexToId(int cell_index) const override;
  bool IsCellOrHeaderOfARIATable() const override;
  bool IsCellOrHeaderOfARIAGrid() const override;
  gfx::AcceleratedWidget GetTargetForNativeAccessibilityEvent() override;
  bool AccessibilityPerformAction(const AXActionData& data) override;
  base::string16 GetLocalizedRoleDescriptionForUnlabeledImage() const override;
  base::string16 GetLocalizedStringForLandmarkType() const override;
  base::string16 GetLocalizedStringForRoleDescription() const override;
  base::string16 GetLocalizedStringForImageAnnotationStatus(
      ax::mojom::ImageAnnotationStatus status) const override;
  base::string16 GetStyleNameAttributeAsLocalizedString() const override;
  bool ShouldIgnoreHoveredStateForTesting() override;
  const ui::AXUniqueId& GetUniqueId() const override;
  bool HasVisibleCaretOrSelection() const override;
  std::set<AXPlatformNode*> GetReverseRelations(
      ax::mojom::IntAttribute attr) override;
  std::set<AXPlatformNode*> GetReverseRelations(
      ax::mojom::IntListAttribute attr) override;
  bool IsOrderedSetItem() const override;
  bool IsOrderedSet() const override;
  base::Optional<int> GetPosInSet() const override;
  base::Optional<int> GetSetSize() const override;
  const std::vector<gfx::NativeViewAccessible> GetUIADescendants()
      const override;
  gfx::RectF GetLocation() const;
  int InternalChildCount() const;
  TestAXNodeWrapper* InternalGetChild(int index) const;

 private:
  TestAXNodeWrapper(AXTree* tree, AXNode* node);
  void ReplaceIntAttribute(int32_t node_id,
                           ax::mojom::IntAttribute attribute,
                           int32_t value);
  void ReplaceFloatAttribute(ax::mojom::FloatAttribute attribute, float value);
  void ReplaceBoolAttribute(ax::mojom::BoolAttribute attribute, bool value);
  void ReplaceStringAttribute(ax::mojom::StringAttribute attribute,
                              std::string value);
  void ReplaceTreeDataTextSelection(int32_t anchor_node_id,
                                    int32_t anchor_offset,
                                    int32_t focus_node_id,
                                    int32_t focus_offset);

  TestAXNodeWrapper* HitTestSyncInternal(int x, int y);
  void UIADescendants(
      const AXNode* node,
      std::vector<gfx::NativeViewAccessible>* descendants) const;
  static bool ShouldHideChildrenForUIA(const AXNode* node);

  // Return the bounds of inline text in this node's coordinate system (which is
  // relative to its container node specified in AXRelativeBounds).
  gfx::RectF GetInlineTextRect(const int start_offset,
                               const int end_offset) const;

  // Determine the offscreen status of a particular element given its bounds..
  AXOffscreenResult DetermineOffscreenResult(gfx::RectF bounds) const;

  AXTree* tree_;
  AXNode* node_;
  ui::AXUniqueId unique_id_;
  AXPlatformNode* platform_node_;
  gfx::AcceleratedWidget native_event_target_;
  bool minimized_ = false;
};

}  // namespace ui

#endif  // UI_ACCESSIBILITY_PLATFORM_TEST_AX_NODE_WRAPPER_H_