ui/keyboard/keyboard_util.h

   1 // Copyright (c) 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 UI_KEYBOARD_KEYBOARD_UTIL_H_
   6 #define UI_KEYBOARD_KEYBOARD_UTIL_H_
   7
   8 #include <string>
   9
  10 #include "base/strings/string16.h"
  11 // TODO(beng): replace with forward decl once RootWindow is renamed.
  12 #include "ui/aura/window.h"
  13 #include "ui/keyboard/keyboard_export.h"
  14
  15 struct GritResourceMap;
  16
  17 namespace aura {
  18 class WindowTreeHost;
  19 }
  20
  21 class GURL;
  22
  23 namespace keyboard {
  24
  25 // Enumeration of swipe directions.
  26 enum CursorMoveDirection {
  27   kCursorMoveRight = 0x01,
  28   kCursorMoveLeft = 0x02,
  29   kCursorMoveUp = 0x04,
  30   kCursorMoveDown = 0x08
  31 };
  32
  33 // An enumeration of different keyboard control events that should be logged.
  34 enum KeyboardControlEvent {
  35   KEYBOARD_CONTROL_SHOW = 0,
  36   KEYBOARD_CONTROL_HIDE_AUTO,
  37   KEYBOARD_CONTROL_HIDE_USER,
  38   KEYBOARD_CONTROL_MAX,
  39 };
  40
  41 // An enumeration of keyboard overscroll override value.
  42 enum KeyboardOverscrolOverride {
  43   KEYBOARD_OVERSCROLL_OVERRIDE_DISABLED = 0,
  44   KEYBOARD_OVERSCROLL_OVERRIDE_ENABLED,
  45   KEYBOARD_OVERSCROLL_OVERRIDE_NONE,
  46 };
  47
  48 // An enumeration of keyboard policy settings.
  49 enum KeyboardShowOverride {
  50   KEYBOARD_SHOW_OVERRIDE_DISABLED = 0,
  51   KEYBOARD_SHOW_OVERRIDE_ENABLED,
  52   KEYBOARD_SHOW_OVERRIDE_NONE,
  53 };
  54
  55 // Gets the default keyboard bounds from |window_bounds|.
  56 KEYBOARD_EXPORT gfx::Rect DefaultKeyboardBoundsFromWindowBounds(
  57     const gfx::Rect& window_bounds);
  58
  59 // Gets the caculated keyboard bounds from |window_bounds|. The keyboard height
  60 // is specified by |keyboard_height|.
  61 KEYBOARD_EXPORT gfx::Rect KeyboardBoundsFromWindowBounds(
  62     const gfx::Rect& window_bounds, int keyboard_height);
  63
  64 // Sets the state of the a11y onscreen keyboard.
  65 KEYBOARD_EXPORT void SetAccessibilityKeyboardEnabled(bool enabled);
  66
  67 // Gets the state of the a11y onscreen keyboard.
  68 KEYBOARD_EXPORT bool GetAccessibilityKeyboardEnabled();
  69
  70 // Sets the state of the touch onscreen keyboard.
  71 KEYBOARD_EXPORT void SetTouchKeyboardEnabled(bool enabled);
  72
  73 // Gets the state of the touch onscreen keyboard.
  74 KEYBOARD_EXPORT bool GetTouchKeyboardEnabled();
  75
  76 // Gets the default keyboard layout.
  77 KEYBOARD_EXPORT std::string GetKeyboardLayout();
  78
  79 // Returns true if the virtual keyboard is enabled.
  80 KEYBOARD_EXPORT bool IsKeyboardEnabled();
  81
  82 // Returns true if keyboard overscroll mode is enabled.
  83 KEYBOARD_EXPORT bool IsKeyboardOverscrollEnabled();
  84
  85 // Sets temporary keyboard overscroll override.
  86 KEYBOARD_EXPORT void SetKeyboardOverscrollOverride(
  87     KeyboardOverscrolOverride override);
  88
  89 // Sets policy override on whether to show the keyboard.
  90 KEYBOARD_EXPORT void SetKeyboardShowOverride(KeyboardShowOverride override);
  91
  92 // Returns true if an IME extension can specify a custom input view for the
  93 // virtual keyboard window.
  94 KEYBOARD_EXPORT bool IsInputViewEnabled();
  95
  96 // Returns true if experimental features are enabled for IME input-views.
  97 KEYBOARD_EXPORT bool IsExperimentalInputViewEnabled();
  98
  99 // Returns true if gesture typing is enabled for virtual keyboard.
 100 KEYBOARD_EXPORT bool IsGestureTypingEnabled();
 101
 102 // Returns true if gesture deletion is enabled for virtual keyboard.
 103 KEYBOARD_EXPORT bool IsGestureDeletionEnabled();
 104
 105 // Returns true if gesture selection is enabled for virtual keyboard.
 106 KEYBOARD_EXPORT bool IsGestureSelectionEnabled();
 107
 108 // Insert |text| into the active TextInputClient if there is one. Returns true
 109 // if |text| was successfully inserted.
 110 KEYBOARD_EXPORT bool InsertText(const base::string16& text);
 111
 112 // Move cursor when swipe on the virtualkeyboard. Returns true if cursor was
 113 // successfully moved according to |swipe_direction|.
 114 KEYBOARD_EXPORT bool MoveCursor(int swipe_direction,
 115                                 int modifier_flags,
 116                                 aura::WindowTreeHost* host);
 117
 118 // Sends a fabricated key event, where |type| is the event type, |key_value|
 119 // is the unicode value of the character, |key_code| is the legacy key code
 120 // value, |key_name| is the name of the key as defined in the DOM3 key event
 121 // specification, and |modifier| indicates if any modifier keys are being
 122 // virtually pressed. The event is dispatched to the active TextInputClient
 123 // associated with |root_window|. The type may be "keydown" or "keyup".
 124 KEYBOARD_EXPORT bool SendKeyEvent(std::string type,
 125                                    int key_value,
 126                                    int key_code,
 127                                    std::string key_name,
 128                                    int modifiers,
 129                                    aura::WindowTreeHost* host);
 130
 131 // Marks that the keyboard load has started. This is used to measure the time it
 132 // takes to fully load the keyboard. This should be called before
 133 // MarkKeyboardLoadFinished.
 134 KEYBOARD_EXPORT void MarkKeyboardLoadStarted();
 135
 136 // Marks that the keyboard load has ended. This finishes measuring that the
 137 // keyboard is loaded.
 138 KEYBOARD_EXPORT void MarkKeyboardLoadFinished();
 139
 140 // Get the list of keyboard resources. |size| is populated with the number of
 141 // resources in the returned array.
 142 KEYBOARD_EXPORT const GritResourceMap* GetKeyboardExtensionResources(
 143     size_t* size);
 144
 145 // Sets the override content url.
 146 // This is used by for input view for extension IMEs.
 147 KEYBOARD_EXPORT void SetOverrideContentUrl(const GURL& url);
 148
 149 // Gets the override content url.
 150 KEYBOARD_EXPORT const GURL& GetOverrideContentUrl();
 151
 152 // Logs the keyboard control event as a UMA stat.
 153 void LogKeyboardControlEvent(KeyboardControlEvent event);
 154
 155 }  // namespace keyboard
 156
 157 #endif  // UI_KEYBOARD_KEYBOARD_UTIL_H_