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find . ! -wholename "*nsprpub*" \
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! -wholename "obj-ff-dbg*" \
! -name nsXPCOMCID.h \
! -name prtypes.h \
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-o -iname "*.c" \
-o -iname "*.cc" \
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convert PRInt8 int8_t
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convert PRInt32 int32_t
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304 lines
11 KiB
C++
304 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIMM32Handler_h__
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#define nsIMM32Handler_h__
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#include "nscore.h"
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#include <windows.h>
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#include "nsString.h"
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#include "nsGUIEvent.h"
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#include "nsTArray.h"
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class nsIWidget;
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class nsWindow;
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struct nsIntRect;
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#define NS_WM_IMEFIRST WM_IME_SETCONTEXT
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#define NS_WM_IMELAST WM_IME_KEYUP
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class nsIMEContext
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{
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public:
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nsIMEContext(HWND aWnd) : mWnd(aWnd)
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{
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mIMC = ::ImmGetContext(mWnd);
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}
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~nsIMEContext()
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{
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if (mIMC) {
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::ImmReleaseContext(mWnd, mIMC);
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mIMC = nullptr;
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}
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}
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HIMC get() const
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{
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return mIMC;
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}
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bool IsValid() const
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{
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return !!mIMC;
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}
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protected:
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nsIMEContext()
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{
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NS_ERROR("Don't create nsIMEContext without window handle");
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}
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nsIMEContext(const nsIMEContext &aSrc) : mWnd(nullptr), mIMC(nullptr)
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{
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NS_ERROR("Don't copy nsIMEContext");
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}
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HWND mWnd;
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HIMC mIMC;
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};
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class nsIMM32Handler
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{
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public:
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static void Initialize();
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static void Terminate();
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// The result of Process* method mean "The message was processed, don't
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// process the message in the caller (nsWindow)" when it's TRUE. At that
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// time, aEatMessage means that the message should be passed to next WndProc
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// when it's FALSE, otherwise, the message should be eaten by us. When the
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// result is FALSE, aEatMessage doesn't have any meaning. Then, the caller
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// should continue to process the message.
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static bool ProcessMessage(nsWindow* aWindow, UINT msg,
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WPARAM &wParam, LPARAM &lParam,
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LRESULT *aRetValue, bool &aEatMessage);
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static bool IsComposing()
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{
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return IsComposingOnOurEditor() || IsComposingOnPlugin();
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}
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static bool IsComposingOn(nsWindow* aWindow)
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{
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return IsComposing() && IsComposingWindow(aWindow);
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}
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static bool IsStatusChanged() { return sIsStatusChanged; }
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static bool IsDoingKakuteiUndo(HWND aWnd);
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static void NotifyEndStatusChange() { sIsStatusChanged = false; }
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static bool CanOptimizeKeyAndIMEMessages(MSG *aNextKeyOrIMEMessage);
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#ifdef DEBUG
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/**
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* IsIMEAvailable() returns TRUE when current keyboard layout has IME.
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* Otherwise, FALSE.
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*/
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static bool IsIMEAvailable() { return sIsIME; }
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#endif
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// If aForce is TRUE, these methods doesn't check whether we have composition
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// or not. If you don't set it to TRUE, these method doesn't commit/cancel
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// the composition on uexpected window.
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static void CommitComposition(nsWindow* aWindow, bool aForce = false);
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static void CancelComposition(nsWindow* aWindow, bool aForce = false);
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protected:
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static void EnsureHandlerInstance();
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static bool IsComposingOnOurEditor();
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static bool IsComposingOnPlugin();
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static bool IsComposingWindow(nsWindow* aWindow);
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static bool ShouldDrawCompositionStringOurselves();
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static void InitKeyboardLayout(HKL aKeyboardLayout);
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static UINT GetKeyboardCodePage();
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/**
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* Checks whether the window is top level window of the composing window.
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* In this method, the top level window means in all windows, not only in all
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* OUR windows. I.e., if the aWindow is embedded, this always returns FALSE.
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*/
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static bool IsTopLevelWindowOfComposition(nsWindow* aWindow);
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static bool ProcessInputLangChangeMessage(nsWindow* aWindow,
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WPARAM wParam,
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LPARAM lParam,
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LRESULT *aRetValue,
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bool &aEatMessage);
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static bool ProcessMessageForPlugin(nsWindow* aWindow, UINT msg,
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WPARAM &wParam, LPARAM &lParam,
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LRESULT *aRetValue,
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bool &aEatMessage);
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nsIMM32Handler();
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~nsIMM32Handler();
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// The result of following On*Event methods means "The message was processed,
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// don't process the message in the caller (nsWindow)".
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bool OnMouseEvent(nsWindow* aWindow, LPARAM lParam, int aAction);
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static bool OnKeyDownEvent(nsWindow* aWindow, WPARAM wParam, LPARAM lParam,
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bool &aEatMessage);
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// The result of On* methods mean "eat this message" when it's TRUE.
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bool OnIMEStartComposition(nsWindow* aWindow);
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bool OnIMEStartCompositionOnPlugin(nsWindow* aWindow,
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WPARAM wParam, LPARAM lParam);
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bool OnIMEComposition(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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bool OnIMECompositionOnPlugin(nsWindow* aWindow,
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WPARAM wParam, LPARAM lParam);
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bool OnIMEEndComposition(nsWindow* aWindow);
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bool OnIMEEndCompositionOnPlugin(nsWindow* aWindow,
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WPARAM wParam, LPARAM lParam);
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bool OnIMERequest(nsWindow* aWindow, WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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bool OnIMECharOnPlugin(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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bool OnChar(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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bool OnCharOnPlugin(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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bool OnInputLangChange(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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// These message handlers don't use instance members, we should not create
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// the instance by the messages. So, they should be static.
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static bool OnIMEChar(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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static bool OnIMESetContext(nsWindow* aWindow,
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WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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static bool OnIMESetContextOnPlugin(nsWindow* aWindow,
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WPARAM wParam, LPARAM lParam,
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LRESULT *aResult);
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static bool OnIMECompositionFull(nsWindow* aWindow);
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static bool OnIMENotify(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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static bool OnIMESelect(nsWindow* aWindow, WPARAM wParam, LPARAM lParam);
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// The result of Handle* method mean "Processed" when it's TRUE.
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void HandleStartComposition(nsWindow* aWindow,
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const nsIMEContext &aIMEContext);
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bool HandleComposition(nsWindow* aWindow, const nsIMEContext &aIMEContext,
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LPARAM lParam);
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void HandleEndComposition(nsWindow* aWindow);
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bool HandleReconvert(nsWindow* aWindow, LPARAM lParam, LRESULT *oResult);
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bool HandleQueryCharPosition(nsWindow* aWindow, LPARAM lParam,
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LRESULT *oResult);
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bool HandleDocumentFeed(nsWindow* aWindow, LPARAM lParam, LRESULT *oResult);
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/**
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* When a window's IME context is activating but we have composition on
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* another window, we should commit our composition because IME context is
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* shared by all our windows (including plug-ins).
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* @param aWindow is a new activated window.
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* If aWindow is our composing window, this method does nothing.
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* Otherwise, this commits the composition on the previous window.
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* If this method did commit a composition, this returns TRUE.
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*/
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bool CommitCompositionOnPreviousWindow(nsWindow* aWindow);
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/**
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* ResolveIMECaretPos
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* Convert the caret rect of a composition event to another widget's
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* coordinate system.
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*
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* @param aReferenceWidget The origin widget of aCursorRect.
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* Typically, this is mReferenceWidget of the
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* composing events. If the aCursorRect is in screen
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* coordinates, set nullptr.
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* @param aCursorRect The cursor rect.
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* @param aNewOriginWidget aOutRect will be in this widget's coordinates. If
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* this is nullptr, aOutRect will be in screen
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* coordinates.
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* @param aOutRect The converted cursor rect.
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*/
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void ResolveIMECaretPos(nsIWidget* aReferenceWidget,
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nsIntRect& aCursorRect,
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nsIWidget* aNewOriginWidget,
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nsIntRect& aOutRect);
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bool ConvertToANSIString(const nsAFlatString& aStr,
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UINT aCodePage,
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nsACString& aANSIStr);
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bool SetIMERelatedWindowsPos(nsWindow* aWindow,
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const nsIMEContext &aIMEContext);
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bool GetCharacterRectOfSelectedTextAt(nsWindow* aWindow,
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uint32_t aOffset,
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nsIntRect &aCharRect);
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bool GetCaretRect(nsWindow* aWindow, nsIntRect &aCaretRect);
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void GetCompositionString(const nsIMEContext &aIMEContext, DWORD aIndex);
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/**
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* Get the current target clause of composition string.
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* If there are one or more characters whose attribute is ATTR_TARGET_*,
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* this returns the first character's offset and its length.
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* Otherwise, e.g., the all characters are ATTR_INPUT, this returns
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* the composition string range because the all is the current target.
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*
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* aLength can be null (default), but aOffset must not be null.
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*
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* The aOffset value is offset in the contents. So, when you need offset
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* in the composition string, you need to subtract mCompositionStart from it.
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*/
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bool GetTargetClauseRange(uint32_t *aOffset, uint32_t *aLength = nullptr);
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void DispatchTextEvent(nsWindow* aWindow, const nsIMEContext &aIMEContext,
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bool aCheckAttr = true);
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void SetTextRangeList(nsTArray<nsTextRange> &aTextRangeList);
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nsresult EnsureClauseArray(int32_t aCount);
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nsresult EnsureAttributeArray(int32_t aCount);
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/**
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* When WM_IME_CHAR is received and passed to DefWindowProc, we need to
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* record the messages. In other words, we should record the messages
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* when we receive WM_IME_CHAR on windowless plug-in (if we have focus,
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* we always eat them). When focus is moved from a windowless plug-in to
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* our window during composition, WM_IME_CHAR messages were received when
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* the plug-in has focus. However, WM_CHAR messages are received after the
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* plug-in lost focus. So, we need to ignore the WM_CHAR messages because
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* they make unexpected text input events on us.
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*/
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nsTArray<MSG> mPassedIMEChar;
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bool IsIMECharRecordsEmpty()
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{
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return mPassedIMEChar.IsEmpty();
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}
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void ResetIMECharRecords()
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{
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mPassedIMEChar.Clear();
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}
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void DequeueIMECharRecords(WPARAM &wParam, LPARAM &lParam)
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{
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MSG msg = mPassedIMEChar.ElementAt(0);
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wParam = msg.wParam;
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lParam = msg.lParam;
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mPassedIMEChar.RemoveElementAt(0);
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}
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void EnqueueIMECharRecords(WPARAM wParam, LPARAM lParam)
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{
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MSG msg;
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msg.wParam = wParam;
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msg.lParam = lParam;
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mPassedIMEChar.AppendElement(msg);
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}
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nsWindow* mComposingWindow;
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nsString mCompositionString;
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nsString mLastDispatchedCompositionString;
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nsTArray<uint32_t> mClauseArray;
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nsTArray<uint8_t> mAttributeArray;
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int32_t mCursorPosition;
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uint32_t mCompositionStart;
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bool mIsComposing;
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bool mIsComposingOnPlugin;
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bool mNativeCaretIsCreated;
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static bool sIsStatusChanged;
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static bool sIsIME;
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static bool sIsIMEOpening;
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static UINT sCodePage;
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static DWORD sIMEProperty;
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};
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#endif // nsIMM32Handler_h__
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