A dirty workaround for facebook.

Facebook deletes whitespace characters, including U+3000 (Ideographic Space) used by Traditional-Chinese IMEs as a place-holder, at the beginning of a comment box before WebKit replaces the place-holder with a Traditional-Chinese character. This prevents us from inputing characters with Tranditional-Chinese IMEs. As a workaround, this change just replaces U+3000 at the beginning of composition text with U+FF3F (Fullwidth Low Line), a place-holder character used by Japanese IMEs. (Fortunately, facebook does not delete it.)

BUG=45396
TEST=Open www.facebook.com, type text with Traditional Chinese IMEs in its comment box.
Review URL: http://codereview.chromium.org/2771008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@49777 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 13 insertions, 0 deletions

diff --git a/chrome/browser/ime_input.cc b/chrome/browser/ime_input.cc
index 3f60670..7897a66 100644
--- a/chrome/browser/ime_input.cc
+++ b/chrome/browser/ime_input.cc
@@ -275,6 +275,19 @@ bool ImeInput::GetComposition(HWND window_handle, LPARAM lparam,
     // Copy the composition string to the ImeComposition object.
     result = GetString(imm_context, lparam, GCS_COMPSTR, composition);
 
+    // This is a dirty workaround for facebook. Facebook deletes the placeholder
+    // character (U+3000) used by Traditional-Chinese IMEs at the beginning of
+    // composition text. This prevents WebKit from replacing this placeholder
+    // character with a Traditional-Chinese character, i.e. we cannot input any
+    // characters in a comment box of facebook with Traditional-Chinese IMEs.
+    // As a workaround, we replace U+3000 at the beginning of composition text
+    // with U+FF3F, a placeholder character used by Japanese IMEs.
+    if (input_language_id_ == MAKELANGID(LANG_CHINESE,
+                                         SUBLANG_CHINESE_TRADITIONAL) &&
+        composition->ime_string[0] == 0x3000) {
+      composition->ime_string[0] = 0xFF3F;
+    }
+
     // Retrieve the cursor position in the IME composition.
     int cursor_position = ::ImmGetCompositionString(imm_context,
                                                     GCS_CURSORPOS, NULL, 0);