1/* 2 * Copyright (C) 2012 Igalia S.L. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20#ifndef GtkInputMethodFilter_h 21#define GtkInputMethodFilter_h 22 23#include "GRefPtrGtk.h" 24#include "IntRect.h" 25#include <gdk/gdk.h> 26#include <wtf/text/WTFString.h> 27 28typedef struct _GtkIMContext GtkIMContext; 29typedef struct _GtkWidget GtkWidget; 30 31namespace WebCore { 32 33class GtkInputMethodFilter { 34public: 35 GtkInputMethodFilter(); 36 ~GtkInputMethodFilter(); 37 38 bool filterKeyEvent(GdkEventKey*); 39 void notifyMouseButtonPress(); 40 void notifyFocusedIn(); 41 void notifyFocusedOut(); 42 void resetContext(); 43 void setEnabled(bool); 44 45 void handleCommit(const char* compositionString); 46 void handlePreeditChanged(); 47 void handlePreeditStart(); 48 void handlePreeditEnd(); 49 50 void confirmComposition(); 51 void cancelContextComposition(); 52 void updatePreedit(); 53 void setCursorRect(const IntRect& location); 54 55 GtkIMContext* context() { return m_context.get(); } 56 57 enum EventFakedForComposition { 58 EventFaked, 59 EventNotFaked 60 }; 61 62protected: 63 enum ResultsToSend { 64 Preedit = 1 << 1, 65 Composition = 1 << 2, 66 PreeditAndComposition = Preedit + Composition 67 }; 68 69 void setWidget(GtkWidget*); 70 virtual bool canEdit() = 0; 71 virtual bool sendSimpleKeyEvent(GdkEventKey*, WTF::String eventString = String(), EventFakedForComposition = EventNotFaked) = 0; 72 virtual bool sendKeyEventWithCompositionResults(GdkEventKey*, ResultsToSend = PreeditAndComposition, EventFakedForComposition = EventNotFaked) = 0; 73 virtual void confirmCompositionText(String composition) = 0; 74 virtual void confirmCurrentComposition() = 0; 75 virtual void cancelCurrentComposition() = 0; 76 virtual void setPreedit(String, int cursorOffset) = 0; 77 78 WTF::String m_confirmedComposition; 79 WTF::String m_preedit; 80 int m_cursorOffset; 81 82private: 83 void sendCompositionAndPreeditWithFakeKeyEvents(ResultsToSend); 84 85 GRefPtr<GtkIMContext> m_context; 86 GtkWidget* m_widget; 87 bool m_enabled; 88 bool m_composingTextCurrently; 89 bool m_filteringKeyEvent; 90 bool m_preeditChanged; 91 bool m_preventNextCommit; 92 bool m_justSentFakeKeyUp; 93 unsigned int m_lastFilteredKeyPressCodeWithNoResults; 94 IntPoint m_lastCareLocation; 95}; 96 97} // namespace WebCore 98 99#endif // GtkInputMethodFilter_h 100