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text_input_controller.h
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72 lines (57 loc) · 2.17 KB
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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_CPP_TEXT_INPUT_CONTROLLER_H_
#define PPAPI_CPP_TEXT_INPUT_CONTROLLER_H_
#include <stdint.h>
#include "ppapi/c/ppb_text_input_controller.h"
#include "ppapi/cpp/instance_handle.h"
#include "ppapi/cpp/var.h"
/// @file
/// This file defines the APIs for text input handling.
namespace pp {
class Rect;
/// This class can be used for giving hints to the browser about the text input
/// status of plugins.
class TextInputController {
public:
/// A constructor for creating a <code>TextInputController</code>.
///
/// @param[in] instance The instance with which this resource will be
/// associated.
explicit TextInputController(const InstanceHandle& instance);
/// Destructor.
~TextInputController();
/// SetTextInputType() informs the browser about the current text input mode
/// of the plugin.
///
/// @param[in] type The type of text input type.
void SetTextInputType(PP_TextInput_Type type);
/// UpdateCaretPosition() informs the browser about the coordinates of the
/// text input caret area.
///
/// @param[in] caret A rectangle indicating the caret area.
void UpdateCaretPosition(const Rect& caret);
/// CancelCompositionText() informs the browser that the current composition
/// text is cancelled by the plugin.
void CancelCompositionText();
/// UpdateSurroundingText() informs the browser about the current text
/// selection and surrounding text.
///
/// @param[in] text A UTF-8 sting indicating string buffer of current input
/// context.
///
/// @param[in] caret A integer indicating the byte index of caret location in
/// <code>text</code>.
///
/// @param[in] caret A integer indicating the byte index of anchor location in
/// <code>text</code>. If there is no selection, this value should be equal to
/// <code>caret</code>.
void UpdateSurroundingText(const Var& text,
uint32_t caret,
uint32_t anchor);
private:
InstanceHandle instance_;
};
} // namespace pp
#endif // PPAPI_CPP_TEXT_INPUT_CONTROLLER_H_