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// 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.
#ifndef EXTENSIONS_BROWSER_API_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_DELEGATE_H_
#define EXTENSIONS_BROWSER_API_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_DELEGATE_H_
#include "base/macros.h"
#include "base/strings/string16.h"
#include "base/values.h"
#include "content/public/browser/browser_thread.h"
namespace extensions {
class VirtualKeyboardDelegate {
public:
virtual ~VirtualKeyboardDelegate() {}
// Fetch information about the preferred configuration of the keyboard. On
// exit, |settings| is populated with the keyboard configuration. Returns true
// if successful.
virtual bool GetKeyboardConfig(base::DictionaryValue* settings) = 0;
// Dismiss the virtual keyboard without changing input focus. Returns true if
// successful.
virtual bool HideKeyboard() = 0;
// Insert |text| verbatim into a text area. Returns true if successful.
virtual bool InsertText(const base::string16& text) = 0;
// Notifiy system that keyboard loading is complete. Used in UMA stats to
// track loading performance. Returns true if the notification was handled.
virtual bool OnKeyboardLoaded() = 0;
// Indicate if settings are accessible and enabled based on current state.
// For example, settings should be blocked when the session is locked.
virtual bool IsLanguageSettingsEnabled() = 0;
// Sets the state of the hotrod virtual keyboad.
virtual void SetHotrodKeyboard(bool enable) = 0;
// Activate and lock the virtual keyboad on screen or dismiss the keyboard
// regardless of the state of text focus. Used in a11y mode to allow typing
// hotkeys without the need for text focus. Returns true if successful.
virtual bool LockKeyboard(bool state) = 0;
// Dispatches a virtual key event. |type| indicates if the event is a keydown
// or keyup event. |char_value| is the unicode value for the key. |key_code|
// is the code assigned to the key, which is independent of the state of
// modifier keys. |key_name| is the standardized w3c name for the key.
// |modifiers| indicates which modifier keys are active. Returns true if
// successful.
virtual bool SendKeyEvent(const std::string& type,
int char_value,
int key_code,
const std::string& key_name,
int modifiers) = 0;
// Launches the settings app. Returns true if successful.
virtual bool ShowLanguageSettings() = 0;
// Sets virtual keyboard window mode.
virtual bool SetVirtualKeyboardMode(int mode_enum) = 0;
// Sets requested virtual keyboard state.
virtual bool SetRequestedKeyboardState(int state_enum) = 0;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_VIRTUAL_KEYBOARD_VIRTUAL_KEYBOARD_DELEGATE_H_
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