gtk_im_context_wrapper.cc revision c407dc5cd9bdc5668497f21b26b09d988ab439de
1c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Copyright (c) 2010 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> 10c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include <algorithm> 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 12c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "app/l10n_util.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/gtk_util.h" 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/logging.h" 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/string_util.h" 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/third_party/icu/icu_utf.h" 17c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/app/chrome_dll_resource.h" 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/gtk/gtk_util.h" 19c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/gtk/menu_gtk.h" 20c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host.h" 21c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/browser/renderer_host/render_widget_host_view_gtk.h" 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/native_web_keyboard_event.h" 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "chrome/common/render_messages.h" 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "gfx/rect.h" 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "grit/generated_resources.h" 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "third_party/skia/include/core/SkColor.h" 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::GtkIMContextWrapper(RenderWidgetHostViewGtk* host_view) 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch : host_view_(host_view), 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_(gtk_im_multicontext_new()), 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch context_simple_(gtk_im_context_simple_new()), 32c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_(false), 33c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_(false), 34c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_(false), 35c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_(false), 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_(0), 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_(0), 38c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_(false) { 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_); 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(context_simple_); 41c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 42c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ and context_simple_ share the same callback handlers. 43c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // All data come from them are treated equally. 44c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_ is for full input method support. 45c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is for supporting dead/compose keys when input method is 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // disabled by webkit, eg. in password input box. 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_start", 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_end", 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "preedit_changed", 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_, "commit", 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_start", 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditStartThunk), this); 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_end", 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditEndThunk), this); 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "preedit_changed", 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandlePreeditChangedThunk), this); 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(context_simple_, "commit", 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleCommitThunk), this); 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget = host_view->native_view(); 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(widget); 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "realize", 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewRealizeThunk), this); 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_signal_connect(widget, "unrealize", 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch G_CALLBACK(HandleHostViewUnrealizeThunk), this); 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set client window if the widget is already realized. 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch HandleHostViewRealize(widget); 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochGtkIMContextWrapper::~GtkIMContextWrapper() { 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_) 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_); 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (context_simple_) 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(context_simple_); 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessKeyEvent(GdkEventKey* event) { 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Indicates preedit-changed and commit signal handlers that we are 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing a key event. 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag so that we can know if preedit is changed after 89c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 90c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = false; 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Clear it so that we can know if something needs committing after 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // processing this key event. 93c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 94c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 95c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // According to Document Object Model (DOM) Level 3 Events Specification 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Appendix A: Keyboard events and key identifiers 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://www.w3.org/TR/DOM-Level-3-Events/keyset.html: 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The event sequence would be: 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 100c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. textInput 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // So keydown must be sent to webkit before sending input method result, 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // while keyup must be sent afterwards. 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // However on Windows, if a keydown event has been processed by IME, its 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // virtual keycode will be changed to VK_PROCESSKEY(0xE5) before being sent 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to application. 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate the windows behavior as much as possible, we need to send the 109c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // key event to the GtkIMContext object first, and decide whether or not to 110c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // send the original key event to webkit according to the result from IME. 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME is enabled by WebKit, this event will be dispatched to context_ 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to get full IME support. Otherwise it'll be dispatched to 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_, so that dead/compose keys can still work. 115c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 116c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It sends a "commit" signal when it has a character to be inserted 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // even when we use a US keyboard so that we can send a Char event 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // (or an IME event) to the renderer in our "commit"-signal handler. 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should send a KeyDown (or a KeyUp) event before dispatching this 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // event to the GtkIMContext object (and send a Char event) so that WebKit 121c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can dispatch the JavaScript events in the following order: onkeydown(), 122c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // onkeypress(), and onkeyup(). (Many JavaScript pages assume this.) 123c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean filtered = false; 124c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 125c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_, event); 126c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 127c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch filtered = gtk_im_context_filter_keypress(context_simple_, event); 128c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 129c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 130c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset this flag here, as it's only used in input method callbacks. 131c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 133c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent wke(event); 134c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send filtered keydown event before sending IME result. 136c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (event->type == GDK_KEY_PRESS && filtered) 137c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessFilteredKeyPressEvent(&wke); 138c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 139c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send IME results. In most cases, it's only available if the key event 140c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is filtered by IME. But in rare cases, an unfiltered key event may also 141c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate IME results. 142c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Any IME results generated by a unfiltered key down event must be sent 143c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // before the key down event, to avoid some tricky issues. For example, 144c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when using latin-post input method, pressing 'a' then Backspace, may 145c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate following events in sequence: 146c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. keydown 'a' (filtered) 147c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. preedit changed to "a" 148c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 3. keyup 'a' (unfiltered) 149c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 4. keydown Backspace (unfiltered) 150c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 5. commit "a" 151c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 6. preedit end 152c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 7. keyup Backspace (unfiltered) 153c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 154c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the input box will be in a strange state if keydown 155c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Backspace is sent to webkit before commit "a" and preedit end. 156c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessInputMethodResult(event, filtered); 157c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 158c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send unfiltered keydown and keyup events after sending IME result. 159c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (event->type == GDK_KEY_PRESS && !filtered) 160c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ProcessUnfilteredKeyPressEvent(&wke); 161c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else if (event->type == GDK_KEY_RELEASE) 162c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(wke); 163c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 164c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 165c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::UpdateInputMethodState(WebKit::WebTextInputType type, 166c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gfx::Rect& caret_rect) { 167c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The renderer has updated its IME status. 168c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Control the GtkIMContext object according to this status. 169c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!context_ || !is_focused_) 170c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 171c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 172c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 173c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 174c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool is_enabled = (type == WebKit::WebTextInputTypeText); 175c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_ != is_enabled) { 176c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_enabled_ = is_enabled; 177c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) 178c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 179c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else 180c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 181c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 182c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 183c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled) { 184c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Updates the position of the IME candidate window. 185c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The position sent from the renderer is a relative one, so we need to 186c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attach the GtkIMContext object to this window before changing the 187c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // position. 188c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkRectangle cursor_rect(caret_rect.ToGdkRectangle()); 189c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_cursor_location(context_, &cursor_rect); 190c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 191c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 192c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 193c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusIn() { 194c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) 195c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 196c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 197c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we can give focus to the 198c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object correctly later when IME is enabled by WebKit. 199c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = true; 200c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 201c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-in event only if IME is 202c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 203c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) 204c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 205c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 206c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // context_simple_ is always enabled. 207c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Actually it doesn't care focus state at all. 208c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_simple_); 209c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 210c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Enables RenderWidget's IME related events, so that we can be notified 211c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // when WebKit wants to enable or disable IME. 212c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 213c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(true); 214c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 215c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 216c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::OnFocusOut() { 217c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_focused_) 218c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 219c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 220c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Tracks the focused state so that we won't give focus to the 221c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // GtkIMContext object unexpectly. 222c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_focused_ = false; 223c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 224c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Notify the GtkIMContext object of this focus-out event only if IME is 225c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // enabled by WebKit. 226c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_enabled_) { 227c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To reset the GtkIMContext object and prevent data loss. 228c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ConfirmComposition(); 229c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 230c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 231c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 232c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To make sure it'll be in correct state when focused in again. 233c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 234c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_simple_); 235c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 236c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 237c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 238c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Disable RenderWidget's IME related events to save bandwidth. 239c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 240c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->SetInputMethodActive(false); 241c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 242c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 243c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::AppendInputMethodsContextMenu(MenuGtk* menu) { 244c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gboolean show_input_method_menu = TRUE; 245c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 246c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_get(gtk_widget_get_settings(GTK_WIDGET(host_view_->native_view())), 247c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch "gtk-show-input-method-menu", &show_input_method_menu, NULL); 248c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!show_input_method_menu) 249c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 250c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 251c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string label = gtk_util::ConvertAcceleratorsFromWindowsStyle( 252c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch l10n_util::GetStringUTF8(IDS_CONTENT_CONTEXT_INPUT_METHODS_MENU)); 253c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* menuitem = gtk_menu_item_new_with_mnemonic(label.c_str()); 254c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* submenu = gtk_menu_new(); 255c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu); 256c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_multicontext_append_menuitems(GTK_IM_MULTICONTEXT(context_), 257c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GTK_MENU_SHELL(submenu)); 258c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendSeparator(); 259c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch menu->AppendMenuItem(IDC_INPUT_METHODS_MENU, menuitem); 260c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 261c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 262c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::CancelComposition() { 263c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 264c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 265c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 266c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 267c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 268c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To prevent any text from being committed when resetting the |context_|; 269c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = true; 270c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 271c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_); 272c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_reset(context_simple_); 273c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 274c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_focused_) { 275c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Some input methods may not honour the reset call. Focusing out/in the 276c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // |context_| to make sure it gets reset correctly. 277c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_out(context_); 278c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_focus_in(context_); 279c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 280c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 281c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 282c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 283c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 284c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.clear(); 285c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 286c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_in_key_event_handler_ = false; 287c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 288c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 289c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochbool GtkIMContextWrapper::NeedCommitByForwardingCharEvent() { 290c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is no composition text and has only one character to be 291c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // committed, then the character will be send to webkit as a Char event 292c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // instead of a confirmed composition text. 293c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It should be fine to handle BMP character only, as non-BMP characters 294c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // can always be committed as confirmed composition text. 295c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return !is_composing_text_ && commit_text_.length() == 1; 296c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 297c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 298c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessFilteredKeyPressEvent( 299c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 300c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Copied from third_party/WebKit/WebCore/page/EventHandler.cpp 301c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 302c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Match key code of composition keydown event on windows. 303c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // IE sends VK_PROCESSKEY which has value 229; 304c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 305c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Please refer to following documents for detals: 306c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - Virtual-Key Codes 307c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/ms645540(VS.85).aspx 308c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - How the IME System Works 309c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/cc194848.aspx 310c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // - ImmGetVirtualKey Function 311c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // http://msdn.microsoft.com/en-us/library/dd318570(VS.85).aspx 312c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const int kCompositionEventKeyCode = 229; 313c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 314c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If IME has filtered this event, then replace virtual key code with 315c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // VK_PROCESSKEY. See comment in ProcessKeyEvent() for details. 316c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only required for keydown events. 317c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // To emulate windows behavior, when input method is enabled, if the commit 318c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // text can be emulated by a Char event, then don't do this replacement. 319c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!NeedCommitByForwardingCharEvent()) { 320c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->windowsKeyCode = kCompositionEventKeyCode; 321c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // keyidentifier must be updated accordingly, otherwise this key event may 322c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // still be processed by webkit. 323c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->setKeyIdentifierFromWindowsKeyCode(); 324c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Prevent RenderView::UnhandledKeyboardEvent() from processing it. 325c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Otherwise unexpected result may occur. For example if it's a 326c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Backspace key event, the browser may go back to previous page. 327c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->skip_in_browser = true; 328c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 329c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 330c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 331c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 332c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessUnfilteredKeyPressEvent( 333c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent* wke) { 334c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send keydown event as it, because it's not filtered by IME. 335c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 336c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 337c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // IME is disabled by WebKit or the GtkIMContext object cannot handle 338c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this key event. 339c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This case is caused by two reasons: 340c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 1. The given key event is a control-key event, (e.g. return, page up, 341c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // page down, tab, arrows, etc.) or; 342c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // 2. The given key event is not a control-key event but printable 343c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // characters aren't assigned to the event, (e.g. alt+d, etc.) 344c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Create a Char event manually from this key event and send it to the 345c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // renderer when this Char event contains a printable character which 346c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // should be processed by WebKit. 347c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // isSystemKey will be set to true if this key event has Alt modifier, 348c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // see WebInputEventFactory::keyboardEvent() for details. 349c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (wke->text[0]) { 350c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->type = WebKit::WebInputEvent::Char; 351c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch wke->skip_in_browser = true; 352c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(*wke); 353c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 354c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 355c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 356c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ProcessInputMethodResult(const GdkEventKey* event, 357c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool filtered) { 358c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch RenderWidgetHost* host = host_view_->GetRenderWidgetHost(); 359c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!host) 360c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 361c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 362c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch bool committed = false; 363c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We do commit before preedit change, so that we can optimize some 364c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // unnecessary preedit changes. 365c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (commit_text_.length()) { 366c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (filtered && NeedCommitByForwardingCharEvent()) { 367c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send a Char event when we input a composed character without IMEs 368c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // so that this event is to be dispatched to onkeypress() handlers, 369c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // autofill, etc. 370c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Only commit text generated by a filtered key down event can be sent 371c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // as a Char event, because a unfiltered key down event will probably 372c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // generate another Char event. 373c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(james.su@gmail.com): Is it necessary to support non BMP chars 374c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // here? 375c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NativeWebKeyboardEvent char_event(commit_text_[0], 376c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch event->state, 377c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch base::Time::Now().ToDoubleT()); 378c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char_event.skip_in_browser = true; 379c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->ForwardKeyboardEvent(char_event); 380c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 381c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch committed = true; 382c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send an IME event. 383c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Unlike a Char event, an IME event is NOT dispatched to onkeypress() 384c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handlers or autofill. 385c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeConfirmComposition(commit_text_); 386c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Set this flag to false, as this composition session has been 387c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // finished. 388c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = false; 389c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 390c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 391c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 392c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Send preedit text only if it's changed. 393c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If a text has been committed, then we don't need to send the empty 394c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // preedit text again. 395c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_preedit_changed_) { 396c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 397c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Another composition session has been started. 398c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 399c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeSetComposition(preedit_text_, preedit_underlines_, 400c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_, preedit_selection_end_); 401c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else if (!committed) { 402c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host->ImeCancelComposition(); 403c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 404c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 405c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 406c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 407c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ConfirmComposition() { 408c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_enabled_) 409c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 410c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 411c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DCHECK(!is_in_key_event_handler_); 412c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 413c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (is_composing_text_) { 414c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (host_view_->GetRenderWidgetHost()) 415c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(); 416c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 417c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Reset the input method. 418c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CancelComposition(); 419c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 420c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 421c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 422c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommit(const string16& text) { 423c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Append the text to the buffer, because commit signal might be fired 424c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // multiple times when processing a key event. 425c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch commit_text_.append(text); 426c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 427c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send commit text to webkit later. Otherwise, 428c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need send it here. 429c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's possible that commit signal is fired without a key event, for 430c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // example when user input via a voice or handwriting recognition software. 431c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In this case, the text must be committed directly. 432c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) 433c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeConfirmComposition(text); 434c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 435c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 436c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStart() { 437c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 438c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 439c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 440c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChanged(const gchar* text, 441c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 442c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position) { 443c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_preedit_changed_ to false if there is no change, because 444c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // this handler might be called multiple times with the same data. 445c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 446c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 447c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 448c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_start_ = 0; 449c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_ = 0; 450c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 451c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ExtractCompositionInfo(text, attrs, cursor_position, &preedit_text_, 452c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_underlines_, &preedit_selection_start_, 453c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch &preedit_selection_end_); 454c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 455c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // In case we are using a buggy input method which doesn't fire 456c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // "preedit_start" signal. 457c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) 458c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_composing_text_ = true; 459c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 460c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Nothing needs to do, if it's currently in ProcessKeyEvent() 461c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // handler, which will send preedit text to webkit later. 462c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Otherwise, we need send it here if it's been changed. 463c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) { 464c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeSetComposition( 465c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_, preedit_underlines_, preedit_selection_start_, 466c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_selection_end_); 467c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 468c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 469c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 470c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEnd() { 471c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (preedit_text_.length()) { 472c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The composition session has been finished. 473c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_text_.clear(); 474c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch preedit_underlines_.clear(); 475c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch is_preedit_changed_ = true; 476c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 477c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If there is still a preedit text when firing "preedit-end" signal, 478c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // we need inform webkit to clear it. 479c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // It's only necessary when it's not in ProcessKeyEvent (). 480c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!is_in_key_event_handler_ && host_view_->GetRenderWidgetHost()) 481c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch host_view_->GetRenderWidgetHost()->ImeCancelComposition(); 482c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 483c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 484c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Don't set is_composing_text_ to false here, because "preedit_end" 485c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // signal may be fired before "commit" signal. 486c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 487c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 488c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealize(GtkWidget* widget) { 489c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We should only set im context's client window once, because when setting 490c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // client window.im context may destroy and recreate its internal states and 491c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // objects. 492c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (widget->window) { 493c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, widget->window); 494c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, widget->window); 495c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 496c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 497c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 498c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealize() { 499c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_, NULL); 500c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_set_client_window(context_simple_, NULL); 501c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 502c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 503c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleCommitThunk( 504c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, gchar* text, GtkIMContextWrapper* self) { 505c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleCommit(UTF8ToUTF16(text)); 506c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 507c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 508c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditStartThunk( 509c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 510c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditStart(); 511c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 512c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 513c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditChangedThunk( 514c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 515c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gchar* text = NULL; 516c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs = NULL; 517c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint cursor_position = 0; 518c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_im_context_get_preedit_string(context, &text, &attrs, &cursor_position); 519c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditChanged(text, attrs, cursor_position); 520c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_free(text); 521c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_list_unref(attrs); 522c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 523c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 524c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandlePreeditEndThunk( 525c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkIMContext* context, GtkIMContextWrapper* self) { 526c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandlePreeditEnd(); 527c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 528c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 529c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewRealizeThunk( 530c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 531c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewRealize(widget); 532c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 533c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 534c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::HandleHostViewUnrealizeThunk( 535c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GtkWidget* widget, GtkIMContextWrapper* self) { 536c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch self->HandleHostViewUnrealize(); 537c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 538c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 539c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid GtkIMContextWrapper::ExtractCompositionInfo( 540c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const gchar* utf8_text, 541c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrList* attrs, 542c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_position, 543c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch string16* utf16_text, 544c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<WebKit::WebCompositionUnderline>* underlines, 545c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_start, 546c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int* selection_end) { 547c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *utf16_text = UTF8ToUTF16(utf8_text); 548c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 549c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (utf16_text->empty()) 550c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 551c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 552c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Gtk/Pango uses character index for cursor position and byte index for 553c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // attribute range, but we use char16 offset for them. So we need to do 554c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // conversion here. 555c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::vector<int> char16_offsets; 556c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int length = static_cast<int>(utf16_text->length()); 557c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int offset = 0; offset < length; ++offset) { 558c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(offset); 559c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (CBU16_IS_SURROGATE((*utf16_text)[offset])) 560c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ++offset; 561c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 562c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 563c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The text length in Unicode characters. 564c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int char_length = static_cast<int>(char16_offsets.size()); 565c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Make sure we can convert the value of |char_length| as well. 566c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets.push_back(length); 567c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 568c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int cursor_offset = 569c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[std::max(0, std::min(char_length, cursor_position))]; 570c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 571c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // TODO(suzhe): due to a bug of webkit, we currently can't use selection range 572c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // with composition string. See: https://bugs.webkit.org/show_bug.cgi?id=40805 573c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch *selection_start = *selection_end = cursor_offset; 574c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 575c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (attrs) { 576c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int utf8_length = strlen(utf8_text); 577c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttrIterator* iter = pango_attr_list_get_iterator(attrs); 578c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 579c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // We only care about underline and background attributes and convert 580c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // background attribute into selection if possible. 581c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch do { 582c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gint start, end; 583c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_range(iter, &start, &end); 584c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 585c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, utf8_length); 586c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, utf8_length); 587c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 588c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 589c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 590c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = g_utf8_pointer_to_offset(utf8_text, utf8_text + start); 591c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = g_utf8_pointer_to_offset(utf8_text, utf8_text + end); 592c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 593c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Double check, in case |utf8_text| is not a valid utf-8 string. 594c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch start = std::min(start, char_length); 595c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch end = std::min(end, char_length); 596c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (start >= end) 597c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 598c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 599c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* background_attr = 600c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); 601c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch PangoAttribute* underline_attr = 602c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); 603c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 604c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr || underline_attr) { 605c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 606c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline underline( 607c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch char16_offsets[start], char16_offsets[end], SK_ColorBLACK, false); 608c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 609c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Always use thick underline for a range with background color, which 610c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // is usually the selection range. 611c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (background_attr) 612c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 613c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underline_attr) { 614c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int type = reinterpret_cast<PangoAttrInt*>(underline_attr)->value; 615c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (type == PANGO_UNDERLINE_DOUBLE) 616c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.thick = true; 617c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch else if (type == PANGO_UNDERLINE_ERROR) 618c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underline.color = SK_ColorRED; 619c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 620c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back(underline); 621c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 622c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } while (pango_attr_iterator_next(iter)); 623c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pango_attr_iterator_destroy(iter); 624c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 625c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 626c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Use a black thin underline by default. 627c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (underlines->empty()) { 628c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch underlines->push_back( 629c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch WebKit::WebCompositionUnderline(0, length, SK_ColorBLACK, false)); 630c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 631c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 632