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// Copyright (c) 2012 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 CHROMEOS_DBUS_IBUS_IBUS_PANEL_SERVICE_H_
#define CHROMEOS_DBUS_IBUS_IBUS_PANEL_SERVICE_H_
#include <string>
#include "base/bind.h"
#include "base/callback.h"
#include "base/memory/scoped_vector.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_client_implementation_type.h"
#include "chromeos/dbus/ibus/ibus_constants.h"
namespace dbus {
class Bus;
class ObjectPath;
} // namespace dbus
namespace chromeos {
class IBusInputContextClient;
// TODO(nona): Remove ibus namespace after complete libibus removal.
namespace ibus {
class IBusLookupTable;
class IBusProperty;
class IBusText;
typedef ScopedVector<IBusProperty> IBusPropertyList;
// A interface to handle the candidate window related method call.
class CHROMEOS_EXPORT IBusPanelCandidateWindowHandlerInterface {
public:
virtual ~IBusPanelCandidateWindowHandlerInterface() {}
// Called when the IME updates the lookup table.
virtual void UpdateLookupTable(const ibus::IBusLookupTable& table,
bool visible) = 0;
// Called when the IME hides the lookup table.
virtual void HideLookupTable() = 0;
// Called when the IME updates the auxiliary text. The |text| is given in
// UTF-8 encoding.
virtual void UpdateAuxiliaryText(const std::string& text, bool visible) = 0;
// Called when the IME hides the auxiliary text.
virtual void HideAuxiliaryText() = 0;
// Called when the IME updates the preedit text. The |text| is given in
// UTF-8 encoding.
virtual void UpdatePreeditText(const std::string& text, uint32 cursor_pos,
bool visible) = 0;
// Called when the IME hides the preedit text.
virtual void HidePreeditText() = 0;
// TODO(nona): Introduce SetCursorLocation function.
protected:
IBusPanelCandidateWindowHandlerInterface() {}
};
// A interface to handle the property related method call.
class CHROMEOS_EXPORT IBusPanelPropertyHandlerInterface {
public:
virtual ~IBusPanelPropertyHandlerInterface() {}
// Called when a new property is registered.
virtual void RegisterProperties(const ibus::IBusPropertyList& properties) = 0;
// Called when current property is updated.
virtual void UpdateProperty(const ibus::IBusProperty& property) = 0;
protected:
IBusPanelPropertyHandlerInterface() {}
};
// A class to make the actual DBus method call handling for IBusPanel service.
// The exported method call is used by ibus-daemon to process candidate window
// related event, because Chrome works as candidate window. This class is
// managed by DBusThreadManager.
class CHROMEOS_EXPORT IBusPanelService {
public:
virtual ~IBusPanelService();
// Sets up candidate window panel service with |handler|. This function can be
// called multiple times and also can be passed |handler| as NULL. Caller must
// release |handler|.
virtual void SetUpCandidateWindowHandler(
IBusPanelCandidateWindowHandlerInterface* handler) = 0;
// Sets up property panel service with |handler|. This function can be called
// multiple times and also can be passed |handler| as NULL. Caller must
// release |handler|.
virtual void SetUpPropertyHandler(
IBusPanelPropertyHandlerInterface* handler) = 0;
// Emits CandidateClicked signal.
virtual void CandidateClicked(uint32 index,
ibus::IBusMouseButton button,
uint32 state) = 0;
// Emits CursorUp signal.
virtual void CursorUp() = 0;
// Emits CursorDown signal.
virtual void CursorDown() = 0;
// Emits PageUp signal.
virtual void PageUp() = 0;
// Emits PageDown signal.
virtual void PageDown() = 0;
// Factory function, creates a new instance and returns ownership.
// For normal usage, access the singleton via DBusThreadManager::Get().
// IBusPanelService does not take an ownership of |input_context|, so caller
// should release it.
static CHROMEOS_EXPORT IBusPanelService* Create(
DBusClientImplementationType type,
dbus::Bus* bus,
IBusInputContextClient* input_context);
protected:
// Create() should be used instead.
IBusPanelService();
private:
DISALLOW_COPY_AND_ASSIGN(IBusPanelService);
};
} // namespace ibus
} // namespace chromeos
#endif // CHROMEOS_DBUS_IBUS_IBUS_PANEL_SERVICE_H_
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