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| 1 // Copyright (c) 2012 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 "ui/views/ime/input_method_base.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "ui/base/ime/text_input_client.h" | |
| 9 #include "ui/events/event.h" | |
| 10 #include "ui/views/view.h" | |
| 11 #include "ui/views/widget/widget.h" | |
| 12 | |
| 13 namespace views { | |
| 14 | |
| 15 InputMethodBase::InputMethodBase() : delegate_(NULL), widget_(NULL) {} | |
| 16 | |
| 17 InputMethodBase::~InputMethodBase() { | |
| 18 DetachFromWidget(); | |
| 19 } | |
| 20 | |
| 21 void InputMethodBase::SetDelegate(internal::InputMethodDelegate* delegate) { | |
| 22 DCHECK(delegate); | |
| 23 delegate_ = delegate; | |
| 24 } | |
| 25 | |
| 26 void InputMethodBase::Init(Widget* widget) { | |
| 27 DCHECK(widget); | |
| 28 DCHECK(widget->GetFocusManager()); | |
| 29 DCHECK(!widget_) << "The input method is already initialized."; | |
| 30 | |
| 31 widget_ = widget; | |
| 32 // Alert the InputMethod of the Widget's currently focused view. | |
| 33 View* focused = widget->GetFocusManager()->GetFocusedView(); | |
| 34 if (focused) | |
| 35 OnWillChangeFocus(NULL, focused); | |
| 36 widget->GetFocusManager()->AddFocusChangeListener(this); | |
| 37 } | |
| 38 | |
| 39 views::View* InputMethodBase::GetFocusedView() const { | |
| 40 return widget_ ? widget_->GetFocusManager()->GetFocusedView() : NULL; | |
| 41 } | |
| 42 | |
| 43 void InputMethodBase::OnTextInputTypeChanged(View* view) {} | |
| 44 | |
| 45 ui::TextInputClient* InputMethodBase::GetTextInputClient() const { | |
| 46 return (widget_ && widget_->IsActive() && GetFocusedView()) ? | |
| 47 GetFocusedView()->GetTextInputClient() : NULL; | |
| 48 } | |
| 49 | |
| 50 ui::TextInputType InputMethodBase::GetTextInputType() const { | |
| 51 ui::TextInputClient* client = GetTextInputClient(); | |
| 52 return client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE; | |
| 53 } | |
| 54 | |
| 55 bool InputMethodBase::IsMock() const { | |
| 56 return false; | |
| 57 } | |
| 58 | |
| 59 void InputMethodBase::OnWillChangeFocus(View* focused_before, View* focused) {} | |
| 60 | |
| 61 void InputMethodBase::OnDidChangeFocus(View* focused_before, View* focused) {} | |
| 62 | |
| 63 bool InputMethodBase::IsViewFocused(View* view) const { | |
| 64 return widget_ && widget_->IsActive() && view && GetFocusedView() == view; | |
| 65 } | |
| 66 | |
| 67 bool InputMethodBase::IsTextInputTypeNone() const { | |
| 68 return GetTextInputType() == ui::TEXT_INPUT_TYPE_NONE; | |
| 69 } | |
| 70 | |
| 71 void InputMethodBase::OnInputMethodChanged() const { | |
| 72 ui::TextInputClient* client = GetTextInputClient(); | |
| 73 if (client && client->GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE) | |
| 74 client->OnInputMethodChanged(); | |
| 75 } | |
| 76 | |
| 77 void InputMethodBase::DispatchKeyEventPostIME(const ui::KeyEvent& key) const { | |
| 78 if (delegate_) | |
| 79 delegate_->DispatchKeyEventPostIME(key); | |
| 80 } | |
| 81 | |
| 82 bool InputMethodBase::GetCaretBoundsInWidget(gfx::Rect* rect) const { | |
| 83 DCHECK(rect); | |
| 84 ui::TextInputClient* client = GetTextInputClient(); | |
| 85 if (!client || client->GetTextInputType() == ui::TEXT_INPUT_TYPE_NONE) | |
| 86 return false; | |
| 87 | |
| 88 gfx::Rect caret_bounds = client->GetCaretBounds(); | |
| 89 gfx::Point caret_origin = caret_bounds.origin(); | |
| 90 View::ConvertPointFromScreen(GetFocusedView(), &caret_origin); | |
| 91 caret_bounds.set_origin(caret_origin); | |
| 92 *rect = GetFocusedView()->ConvertRectToWidget(caret_bounds); | |
| 93 | |
| 94 // Convert coordinates if the focused view is inside a child Widget. | |
| 95 if (GetFocusedView()->GetWidget() != widget_) | |
| 96 return Widget::ConvertRect(GetFocusedView()->GetWidget(), widget_, rect); | |
| 97 return true; | |
| 98 } | |
| 99 | |
| 100 void InputMethodBase::DetachFromWidget() { | |
| 101 if (!widget_) | |
| 102 return; | |
| 103 | |
| 104 widget_->GetFocusManager()->RemoveFocusChangeListener(this); | |
| 105 widget_ = NULL; | |
| 106 } | |
| 107 | |
| 108 } // namespace views | |
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