mandoline/ui/aura/input_method_mandoline.cc

   1 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "mandoline/ui/aura/input_method_mandoline.h"
   6
   7 #include "components/view_manager/public/cpp/view.h"
   8 #include "mojo/converters/ime/ime_type_converters.h"
   9 #include "ui/base/ime/text_input_client.h"
  10 #include "ui/events/event.h"
  11 #include "ui/mojo/ime/text_input_state.mojom.h"
  12
  13 namespace mandoline {
  14
  15 ////////////////////////////////////////////////////////////////////////////////
  16 // InputMethodMandoline, public:
  17
  18 InputMethodMandoline::InputMethodMandoline(
  19     ui::internal::InputMethodDelegate* delegate,
  20     mojo::View* view)
  21     : view_(view) {
  22   SetDelegate(delegate);
  23 }
  24
  25 InputMethodMandoline::~InputMethodMandoline() {}
  26
  27 ////////////////////////////////////////////////////////////////////////////////
  28 // InputMethodMandoline, ui::InputMethod implementation:
  29
  30 void InputMethodMandoline::OnFocus() {
  31   InputMethodBase::OnFocus();
  32   UpdateTextInputType();
  33 }
  34
  35 void InputMethodMandoline::OnBlur() {
  36   InputMethodBase::OnBlur();
  37   UpdateTextInputType();
  38 }
  39
  40 bool InputMethodMandoline::OnUntranslatedIMEMessage(
  41     const base::NativeEvent& event,
  42     NativeEventResult* result) {
  43   return false;
  44 }
  45
  46 void InputMethodMandoline::DispatchKeyEvent(ui::KeyEvent* event) {
  47   DCHECK(event->type() == ui::ET_KEY_PRESSED ||
  48          event->type() == ui::ET_KEY_RELEASED);
  49
  50   // If no text input client, do nothing.
  51   if (!GetTextInputClient()) {
  52     ignore_result(DispatchKeyEventPostIME(event));
  53     return;
  54   }
  55
  56   // Here is where we change the differ from our base class's logic. Instead of
  57   // always dispatching a key down event, and then sending a synthesized
  58   // character event, we instead check to see if this is a character event and
  59   // send out the key if it is. (We fallback to normal dispatch if it isn't.)
  60   if (event->is_char()) {
  61     GetTextInputClient()->InsertChar(event->GetCharacter(), event->flags());
  62     event->StopPropagation();
  63     return;
  64   }
  65
  66   ignore_result(DispatchKeyEventPostIME(event));
  67 }
  68
  69 void InputMethodMandoline::OnTextInputTypeChanged(
  70     const ui::TextInputClient* client) {
  71   if (IsTextInputClientFocused(client))
  72     UpdateTextInputType();
  73   InputMethodBase::OnTextInputTypeChanged(client);
  74 }
  75
  76 void InputMethodMandoline::OnCaretBoundsChanged(
  77     const ui::TextInputClient* client) {
  78 }
  79
  80 void InputMethodMandoline::CancelComposition(
  81     const ui::TextInputClient* client) {
  82 }
  83
  84 void InputMethodMandoline::OnInputLocaleChanged() {
  85 }
  86
  87 std::string InputMethodMandoline::GetInputLocale() {
  88   return "";
  89 }
  90
  91 bool InputMethodMandoline::IsCandidatePopupOpen() const {
  92   return false;
  93 }
  94
  95 void InputMethodMandoline::OnDidChangeFocusedClient(
  96     ui::TextInputClient* focused_before,
  97     ui::TextInputClient* focused) {
  98   InputMethodBase::OnDidChangeFocusedClient(focused_before, focused);
  99   UpdateTextInputType();
 100 }
 101
 102 void InputMethodMandoline::UpdateTextInputType() {
 103   ui::TextInputType type = GetTextInputType();
 104   mojo::TextInputStatePtr state = mojo::TextInputState::New();
 105   state->type = mojo::ConvertTo<mojo::TextInputType>(type);
 106   if (type != ui::TEXT_INPUT_TYPE_NONE)
 107     view_->SetImeVisibility(true, state.Pass());
 108   else
 109     view_->SetTextInputState(state.Pass());
 110 }
 111
 112 }  // namespace mandoline