Bug 149171 and 146844

IME input processing in Widget
Impact only on Windows platform.
/r=shanjian, /sr=brendan

widget/src/windows/nsWindow.cpp

@@ -777,6 +777,7 @@ nsWindow::nsWindow() : nsBaseWidget()
 	  mIMECompClauseStringSize = 0;
 	  mIMECompClauseStringLength = 0;
 	  mIMEReconvertUnicode = NULL;
+	  mIMEWaitForTrailingByte = PR_FALSE;
 
   static BOOL gbInitGlobalValue = FALSE;
   if(! gbInitGlobalValue) {
@@ -2925,19 +2926,13 @@ BOOL nsWindow::OnKeyUp( UINT aVirtualKeyCode, UINT aScanCode, LPARAM aKeyData)
 BOOL nsWindow::OnChar( UINT mbcsCharCode, UINT virtualKeyCode, bool isMultiByte )
 {
   wchar_t uniChar;
-  char    charToConvert[2];
+  char    charToConvert[3];
   size_t  length;
 
   if (mIMEIsComposing)  {
     HandleEndComposition();
   }
 
-  {
-    charToConvert[0] = LOBYTE(mbcsCharCode);
-    length=1;
-  }
-
-  
   if(mIsControlDown && (virtualKeyCode <= 0x1A)) // Ctrl+A Ctrl+Z, see Programming Windows 3.1 page 110 for details  
   { 
     // need to account for shift here.  bug 16486 
@@ -2963,6 +2958,19 @@ BOOL nsWindow::OnChar( UINT mbcsCharCode, UINT virtualKeyCode, bool isMultiByte
     } 
     else 
     {
+      if (PR_TRUE == mIMEWaitForTrailingByte)  {
+        charToConvert[1] = LOBYTE(mbcsCharCode);
+        mIMEWaitForTrailingByte = PR_FALSE;
+        length=2;
+      } 
+      else {
+        charToConvert[0] = LOBYTE(mbcsCharCode);
+        if (::IsDBCSLeadByte(charToConvert[0])) {
+          mIMEWaitForTrailingByte = PR_TRUE;
+          return TRUE;
+        }
+        length=1;
+      }
       ::MultiByteToWideChar(gCurrentKeyboardCP,MB_PRECOMPOSED,charToConvert,length,
 	    &uniChar, 1);
       virtualKeyCode = 0;
@@ -5305,7 +5313,7 @@ NS_METHOD nsWindow::SetPreferredSize(PRInt32 aWidth, PRInt32 aHeight)
 #define ZH_CN_MS_PINYIN_IME_3_0 ((HKL)0xe00e0804L)
 #define ZH_CN_NEIMA_IME ((HKL)0xe0050804L)
 #define USE_OVERTHESPOT_IME(kl) ((nsToolkit::mIsWinXP) \
-          && (ZH_CN_MS_PINYIN_IME_3_0 == (kl)) || (ZH_CN_NEIMA_IME == (kl)))
+          && (ZH_CN_MS_PINYIN_IME_3_0 == (kl)))
 
 void
 nsWindow::HandleTextEvent(HIMC hIMEContext,PRBool aCheckAttr)

widget/src/windows/nsWindow.h

@@ -477,22 +477,28 @@ private:
 protected:
     nsSize      mLastSize;
     static      nsWindow* gCurrentWindow;
-    PRBool      mIsTopWidgetWindow;
     nsPoint     mLastPoint;
     HWND        mWnd;
 #if 0
     HPALETTE    mPalette;
 #endif
     WNDPROC     mPrevWndProc;
-
-    PRBool      mHas3DBorder;
     HBRUSH      mBrush;
-    PRBool      mIsShiftDown;
-    PRBool      mIsControlDown;
-    PRBool      mIsAltDown;
-    PRBool      mIsDestroying;
-    PRBool      mOnDestroyCalled;
-    PRBool      mIsVisible;
+
+    PRPackedBool  mIsTopWidgetWindow;
+    PRPackedBool  mHas3DBorder;
+    PRPackedBool  mIsShiftDown;
+    PRPackedBool  mIsControlDown;
+    PRPackedBool  mIsAltDown;
+    PRPackedBool  mIsDestroying;
+    PRPackedBool  mOnDestroyCalled;
+    PRPackedBool  mIsVisible;
+    PRPackedBool  mIMEIsComposing;
+    PRPackedBool  mIMEIsStatusChanged;
+    PRPackedBool  mIMEWaitForTrailingByte;
+    PRPackedBool  mIsInMouseCapture;
+    PRPackedBool  mIsInMouseWheelProcessing;
+
     // XXX Temporary, should not be caching the font
     nsFont *    mFont;
 
@@ -507,8 +513,6 @@ protected:
 
 	// For Input Method Support
 	DWORD		mIMEProperty;
-	PRBool		mIMEIsComposing;
-  PRBool    mIMEIsStatusChanged;
 	nsCString*	mIMECompString;
 	nsString*	mIMECompUnicode;
 	PRUint8*	mIMEAttributeString;
@@ -524,9 +528,6 @@ protected:
 	static UINT		gCurrentKeyboardCP;
 	static HKL		gKeyboardLayout;
 
-    PRBool  mIsInMouseCapture;
-    PRBool  mIsInMouseWheelProcessing;
-
     // Drag & Drop
     nsNativeDragTarget * mNativeDragTarget;