content/browser/accessibility/browser_accessibility_android.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_ANDROID_H_
   6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_ANDROID_H_
   7
   8 #include "base/android/scoped_java_ref.h"
   9 #include "content/browser/accessibility/browser_accessibility.h"
  10
  11 namespace content {
  12
  13 class CONTENT_EXPORT BrowserAccessibilityAndroid : public BrowserAccessibility {
  14  public:
  15   // Overrides from BrowserAccessibility.
  16   virtual void OnDataChanged() override;
  17   virtual bool IsNative() const override;
  18   virtual void OnLocationChanged() override;
  19
  20   virtual bool PlatformIsLeaf() const override;
  21
  22   bool CanScrollForward() const;
  23   bool CanScrollBackward() const;
  24   bool IsCheckable() const;
  25   bool IsChecked() const;
  26   bool IsClickable() const;
  27   bool IsCollection() const;
  28   bool IsCollectionItem() const;
  29   bool IsContentInvalid() const;
  30   bool IsDismissable() const;
  31   bool IsEditableText() const;
  32   bool IsEnabled() const;
  33   bool IsFocusable() const;
  34   bool IsFocused() const;
  35   bool IsHeading() const;
  36   bool IsHierarchical() const;
  37   bool IsLink() const;
  38   bool IsMultiLine() const;
  39   bool IsPassword() const;
  40   bool IsRangeType() const;
  41   bool IsScrollable() const;
  42   bool IsSelected() const;
  43   bool IsSlider() const;
  44   bool IsVisibleToUser() const;
  45
  46   bool CanOpenPopup() const;
  47
  48   bool HasFocusableChild() const;
  49
  50   const char* GetClassName() const;
  51   base::string16 GetText() const;
  52
  53   int GetItemIndex() const;
  54   int GetItemCount() const;
  55
  56   int GetScrollX() const;
  57   int GetScrollY() const;
  58   int GetMaxScrollX() const;
  59   int GetMaxScrollY() const;
  60
  61   int GetTextChangeFromIndex() const;
  62   int GetTextChangeAddedCount() const;
  63   int GetTextChangeRemovedCount() const;
  64   base::string16 GetTextChangeBeforeText() const;
  65
  66   int GetSelectionStart() const;
  67   int GetSelectionEnd() const;
  68   int GetEditableTextLength() const;
  69
  70   int AndroidInputType() const;
  71   int AndroidLiveRegionType() const;
  72   int AndroidRangeType() const;
  73
  74   int RowCount() const;
  75   int ColumnCount() const;
  76
  77   int RowIndex() const;
  78   int RowSpan() const;
  79   int ColumnIndex() const;
  80   int ColumnSpan() const;
  81
  82   float RangeMin() const;
  83   float RangeMax() const;
  84   float RangeCurrentValue() const;
  85
  86   // Calls GetLineBoundaries or GetWordBoundaries depending on the value
  87   // of |granularity|, or fails if anything else is passed in |granularity|.
  88   void GetGranularityBoundaries(int granularity,
  89                                 std::vector<int32>* starts,
  90                                 std::vector<int32>* ends,
  91                                 int offset);
  92
  93   // Append line start and end indices for the text of this node
  94   // (as returned by GetText()), adding |offset| to each one.
  95   void GetLineBoundaries(std::vector<int32>* line_starts,
  96                          std::vector<int32>* line_ends,
  97                          int offset);
  98
  99   // Append word start and end indices for the text of this node
 100   // (as returned by GetText()) to |word_starts| and |word_ends|,
 101   // adding |offset| to each one.
 102   void GetWordBoundaries(std::vector<int32>* word_starts,
 103                          std::vector<int32>* word_ends,
 104                          int offset);
 105
 106  private:
 107   // This gives BrowserAccessibility::Create access to the class constructor.
 108   friend class BrowserAccessibility;
 109
 110   BrowserAccessibilityAndroid();
 111
 112   bool HasOnlyStaticTextChildren() const;
 113   bool HasOnlyTextAndImageChildren() const;
 114   bool IsIframe() const;
 115
 116   void NotifyLiveRegionUpdate(base::string16& aria_live);
 117
 118   int CountChildrenWithRole(ui::AXRole role) const;
 119
 120   base::string16 cached_text_;
 121   bool first_time_;
 122   base::string16 old_value_;
 123   base::string16 new_value_;
 124
 125   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityAndroid);
 126 };
 127
 128 }  // namespace content
 129
 130 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_ANDROID_H_