gtk_im_context_wrapper.cc revision 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801
172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 5c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/gtk_im_context_wrapper.h" 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 7c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gdk/gdk.h> 8c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gdk/gdkkeysyms.h> 9c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <gtk/gtk.h> 1072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <algorithm> 12c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/logging.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/string_util.h" 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/third_party/icu/icu_utf.h" 163345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#include "base/utf_string_conversions.h" 17513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch#include "chrome/app/chrome_command_ids.h" 1872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "chrome/browser/ui/gtk/gtk_util.h" 193345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#if !defined(TOOLKIT_VIEWS) 2072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "chrome/browser/ui/gtk/menu_gtk.h" 213345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#endif 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host.h" 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host_view_gtk.h" 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/native_web_keyboard_event.h" 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/render_messages.h" 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "grit/generated_resources.h" 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "third_party/skia/include/core/SkColor.h" 2872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/base/l10n/l10n_util.h" 2972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/gfx/gtk_util.h" 3072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/gfx/rect.h" 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 3221d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsennamespace { 3372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen// Copied from third_party/WebKit/Source/WebCore/page/EventHandler.cpp 3421d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// 3521d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// Match key code of composition keydown event on windows. 3621d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// IE sends VK_PROCESSKEY which has value 229; 3721d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// 3821d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// Please refer to following documents for detals: 3921d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// - Virtual-Key Codes 4021d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// http://msdn.microsoft.com/en-us/library/ms645540(VS.85).aspx 4121d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// - How the IME System Works 4221d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// http://msdn.microsoft.com/en-us/library/cc194848.aspx 4321d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// - ImmGetVirtualKey Function 4421d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen// http://msdn.microsoft.com/en-us/library/dd318570(VS.85).aspx 4521d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsenconst int kCompositionEventKeyCode = 229; 4621d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen} // namespace 4721d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::GtkIMContextWrapper(RenderWidgetHostViewGtk* host_view) 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch : host_view_(host_view), 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_(gtk_im_multicontext_new()), 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_simple_(gtk_im_context_simple_new()), 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_(false), 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_(false), 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_(false), 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_(false), 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_(0), 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_(0), 583345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick is_preedit_changed_(false), 5972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen suppress_next_commit_(false), 6072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_code_(0), 6172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_was_up_(false), 6272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_filtered_no_result_(false) { 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_); 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_simple_); 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ and context_simple_ share the same callback handlers. 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // All data come from them are treated equally. 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ is for full input method support. 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is for supporting dead/compose keys when input method is 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // disabled by webkit, eg. in password input box. 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_start", 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_end", 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_changed", 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "commit", 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_start", 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_end", 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_changed", 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "commit", 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 89c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget = host_view->native_view(); 90c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(widget); 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "realize", 93c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewRealizeThunk), this); 94c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "unrealize", 95c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewUnrealizeThunk), this); 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set client window if the widget is already realized. 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch HandleHostViewRealize(widget); 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 100c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::~GtkIMContextWrapper() { 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_) 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_); 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_simple_) 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_simple_); 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessKeyEvent(GdkEventKey* event) { 1093345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 1103345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Indicates preedit-changed and commit signal handlers that we are 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing a key event. 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag so that we can know if preedit is changed after 115c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 116c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = false; 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Clear it so that we can know if something needs committing after 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 121c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // According to Document Object Model (DOM) Level 3 Events Specification 122c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Appendix A: Keyboard events and key identifiers 123c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://www.w3.org/TR/DOM-Level-3-Events/keyset.html: 124c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The event sequence would be: 125c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 126c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. textInput 127c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 128c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 129c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // So keydown must be sent to webkit before sending input method result, 130c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // while keyup must be sent afterwards. 131c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // However on Windows, if a keydown event has been processed by IME, its 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // virtual keycode will be changed to VK_PROCESSKEY(0xE5) before being sent 133c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to application. 134c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate the windows behavior as much as possible, we need to send the 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // key event to the GtkIMContext object first, and decide whether or not to 136c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // send the original key event to webkit according to the result from IME. 137c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 138c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME is enabled by WebKit, this event will be dispatched to context_ 139c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to get full IME support. Otherwise it'll be dispatched to 140c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_, so that dead/compose keys can still work. 141c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 142c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It sends a "commit" signal when it has a character to be inserted 143c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // even when we use a US keyboard so that we can send a Char event 144c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // (or an IME event) to the renderer in our "commit"-signal handler. 145c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should send a KeyDown (or a KeyUp) event before dispatching this 146c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // event to the GtkIMContext object (and send a Char event) so that WebKit 147c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can dispatch the JavaScript events in the following order: onkeydown(), 148c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // onkeypress(), and onkeyup(). (Many JavaScript pages assume this.) 149c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean filtered = false; 150c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 151c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_, event); 152c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 153c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_simple_, event); 154c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 155c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 156c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag here, as it's only used in input method callbacks. 157c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 158c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 159c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent wke(event); 160c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1613345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // If the key event was handled by the input method, then we need to prevent 1623345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // RenderView::UnhandledKeyboardEvent() from processing it. 1633345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // Otherwise unexpected result may occur. For example if it's a 1643345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick // Backspace key event, the browser may go back to previous page. 16572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // We just send all keyup events to the browser to avoid breaking the 16672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // browser's MENU key function, which is actually the only keyup event 16772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // handled in the browser. 16872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (filtered && event->type == GDK_KEY_PRESS) 1693345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick wke.skip_in_browser = true; 1703345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 17172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen const int key_code = wke.windowsKeyCode; 17272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen const bool has_result = HasInputMethodResult(); 17372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 174c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send filtered keydown event before sending IME result. 17572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // In order to workaround http://crosbug.com/6582, we only send a filtered 17672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // keydown event if it generated any input method result. 17772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (event->type == GDK_KEY_PRESS && filtered && has_result) 178c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessFilteredKeyPressEvent(&wke); 179c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 180c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send IME results. In most cases, it's only available if the key event 181c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is filtered by IME. But in rare cases, an unfiltered key event may also 182c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate IME results. 183c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Any IME results generated by a unfiltered key down event must be sent 184c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // before the key down event, to avoid some tricky issues. For example, 185c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when using latin-post input method, pressing 'a' then Backspace, may 186c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate following events in sequence: 187c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 'a' (filtered) 188c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. preedit changed to "a" 189c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 'a' (unfiltered) 190c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 4. keydown Backspace (unfiltered) 191c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 5. commit "a" 192c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 6. preedit end 193c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 7. keyup Backspace (unfiltered) 194c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 195c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the input box will be in a strange state if keydown 196c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Backspace is sent to webkit before commit "a" and preedit end. 19772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (has_result) 19872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen ProcessInputMethodResult(event, filtered); 199c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 200c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send unfiltered keydown and keyup events after sending IME result. 20172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (event->type == GDK_KEY_PRESS && !filtered) { 202c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessUnfilteredKeyPressEvent(&wke); 20372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen } else if (event->type == GDK_KEY_RELEASE) { 20472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // In order to workaround http://crosbug.com/6582, we need to suppress 20572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // the keyup event if corresponding keydown event was suppressed, or 20672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen // the last key event was a keyup event with the same keycode. 20772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen const bool suppress = (last_key_code_ == key_code) && 20872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen (last_key_was_up_ || last_key_filtered_no_result_); 20972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 21072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen if (!suppress) 21172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen host_view_->ForwardKeyboardEvent(wke); 21272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen } 21372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 21472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_code_ = key_code; 21572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_was_up_ = (event->type == GDK_KEY_RELEASE); 21672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_filtered_no_result_ = (filtered && !has_result); 217c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 218c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 219c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::UpdateInputMethodState(WebKit::WebTextInputType type, 220c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gfx::Rect& caret_rect) { 2213345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 2223345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 223c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The renderer has updated its IME status. 224c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Control the GtkIMContext object according to this status. 225c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!context_ || !is_focused_) 226c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 227c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 228c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 229c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 230c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool is_enabled = (type == WebKit::WebTextInputTypeText); 231c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_ != is_enabled) { 232c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_ = is_enabled; 233c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) 234c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 235c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else 236c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 237c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 238c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 239c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) { 240c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Updates the position of the IME candidate window. 241c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The position sent from the renderer is a relative one, so we need to 242c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attach the GtkIMContext object to this window before changing the 243c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // position. 244c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkRectangle cursor_rect(caret_rect.ToGdkRectangle()); 245c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_cursor_location(context_, &cursor_rect); 246c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 247c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 248c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 249c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusIn() { 250c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) 251c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 252c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 253c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we can give focus to the 254c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object correctly later when IME is enabled by WebKit. 255c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = true; 256c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 25772a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_code_ = 0; 25872a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_was_up_ = false; 25972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen last_key_filtered_no_result_ = false; 26072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 261c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-in event only if IME is 262c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 263c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) 264c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 265c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 266c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is always enabled. 267c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Actually it doesn't care focus state at all. 268c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_simple_); 269c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 270c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Enables RenderWidget's IME related events, so that we can be notified 271c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when WebKit wants to enable or disable IME. 272c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 273c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(true); 274c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 275c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 276c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusOut() { 277c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_focused_) 278c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 279c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 280c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we won't give focus to the 281c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object unexpectly. 282c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = false; 283c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 284c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-out event only if IME is 285c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 286c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 287c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To reset the GtkIMContext object and prevent data loss. 288c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ConfirmComposition(); 289c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 290c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 291c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 292c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To make sure it'll be in correct state when focused in again. 293c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 294c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_simple_); 295c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 296c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 297c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 298c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Disable RenderWidget's IME related events to save bandwidth. 299c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 300c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(false); 301c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 302c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 3033345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#if !defined(TOOLKIT_VIEWS) 3043345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick// Not defined for views because the views context menu doesn't 3053345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick// implement input methods yet. 306c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::AppendInputMethodsContextMenu(MenuGtk* menu) { 307c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean show_input_method_menu = TRUE; 308c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 309c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_get(gtk_widget_get_settings(GTK_WIDGET(host_view_->native_view())), 310c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch "gtk-show-input-method-menu", &show_input_method_menu, NULL); 311c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!show_input_method_menu) 312c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 313c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 314513209b27ff55e2841eac0e4120199c23acce758Ben Murdoch std::string label = gfx::ConvertAcceleratorsFromWindowsStyle( 315c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch l10n_util::GetStringUTF8(IDS_CONTENT_CONTEXT_INPUT_METHODS_MENU)); 316c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* menuitem = gtk_menu_item_new_with_mnemonic(label.c_str()); 317c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* submenu = gtk_menu_new(); 318c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu); 319c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_multicontext_append_menuitems(GTK_IM_MULTICONTEXT(context_), 320c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GTK_MENU_SHELL(submenu)); 321c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendSeparator(); 322c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendMenuItem(IDC_INPUT_METHODS_MENU, menuitem); 323c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 3243345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#endif 325c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 326c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::CancelComposition() { 327c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 328c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 329c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 330c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 331c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 332c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To prevent any text from being committed when resetting the |context_|; 333c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 3343345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = true; 335c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 336c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_); 337c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 338c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 339c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) { 340c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Some input methods may not honour the reset call. Focusing out/in the 341c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // |context_| to make sure it gets reset correctly. 342c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 343c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 344c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 345c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 346c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 347c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 348c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 349c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 350c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 351c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 352c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 353c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 35472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsenbool GtkIMContextWrapper::NeedCommitByForwardingCharEvent() const { 355c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is no composition text and has only one character to be 356c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // committed, then the character will be send to webkit as a Char event 357c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // instead of a confirmed composition text. 358c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It should be fine to handle BMP character only, as non-BMP characters 359c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can always be committed as confirmed composition text. 360c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return !is_composing_text_ && commit_text_.length() == 1; 361c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 362c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 36372a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsenbool GtkIMContextWrapper::HasInputMethodResult() const { 36472a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen return commit_text_.length() || is_preedit_changed_; 36572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen} 36672a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen 367c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessFilteredKeyPressEvent( 368c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 369c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME has filtered this event, then replace virtual key code with 370c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // VK_PROCESSKEY. See comment in ProcessKeyEvent() for details. 371c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only required for keydown events. 372c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate windows behavior, when input method is enabled, if the commit 373c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // text can be emulated by a Char event, then don't do this replacement. 374c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!NeedCommitByForwardingCharEvent()) { 375c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->windowsKeyCode = kCompositionEventKeyCode; 376c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // keyidentifier must be updated accordingly, otherwise this key event may 377c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // still be processed by webkit. 378c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->setKeyIdentifierFromWindowsKeyCode(); 379c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 380c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 381c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 382c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 383c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessUnfilteredKeyPressEvent( 384c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 385c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send keydown event as it, because it's not filtered by IME. 386c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 387c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 388c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // IME is disabled by WebKit or the GtkIMContext object cannot handle 389c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this key event. 390c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This case is caused by two reasons: 391c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. The given key event is a control-key event, (e.g. return, page up, 392c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // page down, tab, arrows, etc.) or; 393c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. The given key event is not a control-key event but printable 394c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // characters aren't assigned to the event, (e.g. alt+d, etc.) 395c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Create a Char event manually from this key event and send it to the 396c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // renderer when this Char event contains a printable character which 397c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // should be processed by WebKit. 398c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // isSystemKey will be set to true if this key event has Alt modifier, 399c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // see WebInputEventFactory::keyboardEvent() for details. 400c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (wke->text[0]) { 401c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->type = WebKit::WebInputEvent::Char; 402c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->skip_in_browser = true; 403c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 404c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 405c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 406c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 407c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessInputMethodResult(const GdkEventKey* event, 408c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool filtered) { 409c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch RenderWidgetHost* host = host_view_->GetRenderWidgetHost(); 410c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!host) 411c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 412c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 413c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool committed = false; 414c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We do commit before preedit change, so that we can optimize some 415c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // unnecessary preedit changes. 416c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (commit_text_.length()) { 417c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (filtered && NeedCommitByForwardingCharEvent()) { 418c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send a Char event when we input a composed character without IMEs 419c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // so that this event is to be dispatched to onkeypress() handlers, 420c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // autofill, etc. 421c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Only commit text generated by a filtered key down event can be sent 422c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // as a Char event, because a unfiltered key down event will probably 423c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate another Char event. 424c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(james.su@gmail.com): Is it necessary to support non BMP chars 425c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // here? 426c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent char_event(commit_text_[0], 427c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch event->state, 428c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch base::Time::Now().ToDoubleT()); 429c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char_event.skip_in_browser = true; 430c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(char_event); 431c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 432c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch committed = true; 433c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send an IME event. 434c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Unlike a Char event, an IME event is NOT dispatched to onkeypress() 435c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handlers or autofill. 436c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeConfirmComposition(commit_text_); 437c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set this flag to false, as this composition session has been 438c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // finished. 439c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 440c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 441c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 442c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 443c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send preedit text only if it's changed. 444c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If a text has been committed, then we don't need to send the empty 445c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // preedit text again. 446c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_preedit_changed_) { 447c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 448c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Another composition session has been started. 449c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 450c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeSetComposition(preedit_text_, preedit_underlines_, 451c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_, preedit_selection_end_); 452c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (!committed) { 453c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeCancelComposition(); 454c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 455c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 456c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 457c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 458c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ConfirmComposition() { 459c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 460c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 461c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 462c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 463c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 464c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_composing_text_) { 465c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 466c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(); 467c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 468c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset the input method. 469c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CancelComposition(); 470c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 471c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 472c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 473c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommit(const string16& text) { 4743345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick if (suppress_next_commit_) { 4753345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick suppress_next_commit_ = false; 4763345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick return; 4773345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick } 4783345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick 479c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Append the text to the buffer, because commit signal might be fired 480c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // multiple times when processing a key event. 481c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.append(text); 482c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 483c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send commit text to webkit later. Otherwise, 484c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need send it here. 485c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's possible that commit signal is fired without a key event, for 486c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // example when user input via a voice or handwriting recognition software. 487c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the text must be committed directly. 48821d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) { 48921d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen // Workaround http://crbug.com/45478 by sending fake key down/up events. 49021d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen SendFakeCompositionKeyEvent(WebKit::WebInputEvent::RawKeyDown); 491c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(text); 49221d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen SendFakeCompositionKeyEvent(WebKit::WebInputEvent::KeyUp); 49321d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen } 494c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 495c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 496c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStart() { 497201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch // Ignore preedit related signals triggered by CancelComposition() method. 498201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch if (suppress_next_commit_) 499201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch return; 500c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 501c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 502c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 503c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChanged(const gchar* text, 504c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 505c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position) { 506201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch // Ignore preedit related signals triggered by CancelComposition() method. 507201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch if (suppress_next_commit_) 508201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch return; 509201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch 510c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_preedit_changed_ to false if there is no change, because 511c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this handler might be called multiple times with the same data. 512c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 513c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 514c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 515c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_ = 0; 516c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_ = 0; 517c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 518c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ExtractCompositionInfo(text, attrs, cursor_position, &preedit_text_, 519c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_underlines_, &preedit_selection_start_, 520c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_selection_end_); 521c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 522c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In case we are using a buggy input method which doesn't fire 523c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // "preedit_start" signal. 524c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) 525c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 526c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 527c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 528c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send preedit text to webkit later. 529c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Otherwise, we need send it here if it's been changed. 530201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch if (!is_in_key_event_handler_ && is_composing_text_ && 531201ade2fbba22bfb27ae029f4d23fca6ded109a0Ben Murdoch host_view_->GetRenderWidgetHost()) { 53221d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen // Workaround http://crbug.com/45478 by sending fake key down/up events. 53321d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen SendFakeCompositionKeyEvent(WebKit::WebInputEvent::RawKeyDown); 534c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeSetComposition( 535c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_, preedit_underlines_, preedit_selection_start_, 536c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_); 53721d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen SendFakeCompositionKeyEvent(WebKit::WebInputEvent::KeyUp); 538c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 539c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 540c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 541c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEnd() { 542c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 543c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The composition session has been finished. 544c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 545c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 546c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 547c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 548c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is still a preedit text when firing "preedit-end" signal, 549c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need inform webkit to clear it. 550c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only necessary when it's not in ProcessKeyEvent (). 551c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) 552c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeCancelComposition(); 553c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 554c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 555c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_composing_text_ to false here, because "preedit_end" 556c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // signal may be fired before "commit" signal. 557c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 558c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 559c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealize(GtkWidget* widget) { 560c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should only set im context's client window once, because when setting 561c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // client window.im context may destroy and recreate its internal states and 562c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // objects. 563c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (widget->window) { 564c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, widget->window); 565c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, widget->window); 566c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 567c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 568c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 569c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealize() { 570c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, NULL); 571c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, NULL); 572c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 573c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 57421d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsenvoid GtkIMContextWrapper::SendFakeCompositionKeyEvent( 57521d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen WebKit::WebInputEvent::Type type) { 57621d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen NativeWebKeyboardEvent fake_event; 57721d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen fake_event.windowsKeyCode = kCompositionEventKeyCode; 57821d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen fake_event.skip_in_browser = true; 57921d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen fake_event.type = type; 58021d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen host_view_->ForwardKeyboardEvent(fake_event); 58121d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen} 58221d179b334e59e9a3bfcaed4c4430bef1bc5759dKristian Monsen 583c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommitThunk( 584c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, gchar* text, GtkIMContextWrapper* self) { 585c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleCommit(UTF8ToUTF16(text)); 586c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 587c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 588c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStartThunk( 589c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 590c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditStart(); 591c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 592c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 593c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChangedThunk( 594c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 595c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gchar* text = NULL; 596c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs = NULL; 597c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint cursor_position = 0; 598c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_get_preedit_string(context, &text, &attrs, &cursor_position); 599c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditChanged(text, attrs, cursor_position); 600c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_free(text); 601c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_list_unref(attrs); 602c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 603c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 604c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEndThunk( 605c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 606c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditEnd(); 607c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 608c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 609c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealizeThunk( 610c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 611c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewRealize(widget); 612c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 613c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 614c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealizeThunk( 615c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 616c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewUnrealize(); 617c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 618c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 619c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ExtractCompositionInfo( 620c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gchar* utf8_text, 621c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 622c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position, 623c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch string16* utf16_text, 624c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<WebKit::WebCompositionUnderline>* underlines, 625c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_start, 626c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_end) { 627c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *utf16_text = UTF8ToUTF16(utf8_text); 628c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 629c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (utf16_text->empty()) 630c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 631c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 632c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Gtk/Pango uses character index for cursor position and byte index for 633c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attribute range, but we use char16 offset for them. So we need to do 634c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // conversion here. 635c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<int> char16_offsets; 636c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int length = static_cast<int>(utf16_text->length()); 637c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int offset = 0; offset < length; ++offset) { 638c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(offset); 639c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (CBU16_IS_SURROGATE((*utf16_text)[offset])) 640c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ++offset; 641c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 642c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 643c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The text length in Unicode characters. 644c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int char_length = static_cast<int>(char16_offsets.size()); 645c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Make sure we can convert the value of |char_length| as well. 646c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(length); 647c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 648c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_offset = 649c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[std::max(0, std::min(char_length, cursor_position))]; 650c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 651c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(suzhe): due to a bug of webkit, we currently can't use selection range 652c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // with composition string. See: https://bugs.webkit.org/show_bug.cgi?id=40805 653c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *selection_start = *selection_end = cursor_offset; 654c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 655c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (attrs) { 656c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int utf8_length = strlen(utf8_text); 657c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrIterator* iter = pango_attr_list_get_iterator(attrs); 658c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 659c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We only care about underline and background attributes and convert 660c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // background attribute into selection if possible. 661c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch do { 662c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint start, end; 663c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_range(iter, &start, &end); 664c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 665c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, utf8_length); 666c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, utf8_length); 667c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 668c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 669c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 670c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = g_utf8_pointer_to_offset(utf8_text, utf8_text + start); 671c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = g_utf8_pointer_to_offset(utf8_text, utf8_text + end); 672c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 673c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Double check, in case |utf8_text| is not a valid utf-8 string. 674c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, char_length); 675c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, char_length); 676c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 677c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 678c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 679c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* background_attr = 680c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); 681c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* underline_attr = 682c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); 683c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 684c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr || underline_attr) { 685c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 686c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline underline( 687c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[start], char16_offsets[end], SK_ColorBLACK, false); 688c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 689c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Always use thick underline for a range with background color, which 690c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is usually the selection range. 691c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr) 692c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 693c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underline_attr) { 694c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int type = reinterpret_cast<PangoAttrInt*>(underline_attr)->value; 695c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (type == PANGO_UNDERLINE_DOUBLE) 696c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 697c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else if (type == PANGO_UNDERLINE_ERROR) 698c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.color = SK_ColorRED; 699c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 700c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back(underline); 701c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 702c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } while (pango_attr_iterator_next(iter)); 703c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_destroy(iter); 704c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 705c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 706c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 707c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underlines->empty()) { 708c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back( 709c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline(0, length, SK_ColorBLACK, false)); 710c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 711c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 712