Integrating GtkIMContext into the RenderWidgetHostViewGtk class.This change implements signal handers of the GtkIMContext object to support IMEs and dead-keys. Also, to improve compatibility with Windows Chrome, this change emulates IPC messages sent on Windows when we input characters and fixes Issue 13604 as well as Issue 10953 and 11226. Even though I notice we need more work for fixing edge cases (e.g. disabling IMEs on a password input) on Linux, I think this is the good starting point. (Supporting edge-cases requires complicated code and it makes hard to review.)

BUG=10953 "IME support"
BUG=11226 "Dead keys and accents input not working"
BUG=13604 "Hotkeys not working in non-us keyboard layout"
TEST=Open a web page which contains an <input> form (e.g. <http://www.google.com/>), type a '[{' key and an 'A' key on a Canadian-French keyboard, and see a Latin character "U+00E2" is displayed in the <input> form.
TEST=Open a web page which contains an <input> form (e.g. <http://www.google.com/>), enable an Chinese Pinyin IME, type a 'W' key, type an 'O' key, and see a Chinese character is displayed in the <input> form.
TEST=Change the keyboard layout to Hebrew (or Russian), open a web page which contains an <input> form, input some characters in the <input> form, type control+a, and see the text in the <input> form is selected.
Review URL: http://codereview.chromium.org/126118

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19009 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 22 insertions, 0 deletions

diff --git a/chrome/browser/renderer_host/render_widget_host.cc b/chrome/browser/renderer_host/render_widget_host.cc
index 51d2b3b..fd734bb 100644
--- a/chrome/browser/renderer_host/render_widget_host.cc
+++ b/chrome/browser/renderer_host/render_widget_host.cc
@@ -424,6 +424,28 @@ void RenderWidgetHost::NotifyTextDirection() {
   }
 }
 
+void RenderWidgetHost::ImeSetInputMode(bool activate) {
+  Send(new ViewMsg_ImeSetInputMode(routing_id(), activate));
+}
+
+void RenderWidgetHost::ImeSetComposition(const std::wstring& ime_string,
+                                         int cursor_position,
+                                         int target_start,
+                                         int target_end) {
+  Send(new ViewMsg_ImeSetComposition(routing_id(), 0, cursor_position,
+                                     target_start, target_end, ime_string));
+}
+
+void RenderWidgetHost::ImeConfirmComposition(const std::wstring& ime_string) {
+  Send(new ViewMsg_ImeSetComposition(routing_id(), 1, -1, -1, -1, ime_string));
+}
+
+void RenderWidgetHost::ImeCancelComposition() {
+  std::wstring empty_string;
+  Send(new ViewMsg_ImeSetComposition(routing_id(), -1, -1, -1, -1,
+                                     empty_string));
+}
+
 gfx::Rect RenderWidgetHost::GetRootWindowResizerRect() const {
   return gfx::Rect();
 }