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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "views/controls/combobox/combobox.h"
#include "base/logging.h"
#include "base/utf_string_conversions.h"
#include "ui/base/accessibility/accessible_view_state.h"
#include "ui/base/keycodes/keyboard_codes.h"
#include "ui/base/models/combobox_model.h"
#include "ui/views/widget/widget.h"
#include "views/controls/combobox/combobox_listener.h"
#include "views/controls/native/native_view_host.h"
namespace views {
// static
const char Combobox::kViewClassName[] = "views/Combobox";
////////////////////////////////////////////////////////////////////////////////
// Combobox, public:
Combobox::Combobox(ui::ComboboxModel* model)
: native_wrapper_(NULL),
model_(model),
listener_(NULL),
selected_item_(0) {
set_focusable(true);
}
Combobox::~Combobox() {
}
void Combobox::ModelChanged() {
selected_item_ = std::min(0, model_->GetItemCount());
if (native_wrapper_)
native_wrapper_->UpdateFromModel();
PreferredSizeChanged();
}
void Combobox::SetSelectedItem(int index) {
selected_item_ = index;
if (native_wrapper_)
native_wrapper_->UpdateSelectedItem();
}
void Combobox::SelectionChanged() {
int prev_selected_item = selected_item_;
selected_item_ = native_wrapper_->GetSelectedItem();
if (listener_)
listener_->ItemChanged(this, prev_selected_item, selected_item_);
if (GetWidget()) {
GetWidget()->NotifyAccessibilityEvent(
this, ui::AccessibilityTypes::EVENT_VALUE_CHANGED, false);
}
}
void Combobox::SetAccessibleName(const string16& name) {
accessible_name_ = name;
}
////////////////////////////////////////////////////////////////////////////////
// Combobox, View overrides:
gfx::Size Combobox::GetPreferredSize() {
if (native_wrapper_)
return native_wrapper_->GetPreferredSize();
return gfx::Size();
}
void Combobox::Layout() {
if (native_wrapper_) {
native_wrapper_->GetView()->SetBounds(0, 0, width(), height());
native_wrapper_->GetView()->Layout();
}
}
void Combobox::OnEnabledChanged() {
View::OnEnabledChanged();
if (native_wrapper_)
native_wrapper_->UpdateEnabled();
}
// VKEY_ESCAPE should be handled by this view when the drop down list is active.
// In other words, the list should be closed instead of the dialog.
bool Combobox::SkipDefaultKeyEventProcessing(const KeyEvent& e) {
if (e.key_code() != ui::VKEY_ESCAPE ||
e.IsShiftDown() || e.IsControlDown() || e.IsAltDown()) {
return false;
}
return native_wrapper_ && native_wrapper_->IsDropdownOpen();
}
void Combobox::OnPaintFocusBorder(gfx::Canvas* canvas) {
if (NativeViewHost::kRenderNativeControlFocus)
View::OnPaintFocusBorder(canvas);
}
bool Combobox::OnKeyPressed(const views::KeyEvent& e) {
return native_wrapper_ && native_wrapper_->HandleKeyPressed(e);
}
bool Combobox::OnKeyReleased(const views::KeyEvent& e) {
return native_wrapper_ && native_wrapper_->HandleKeyReleased(e);
}
void Combobox::OnFocus() {
// Forward the focus to the wrapper.
if (native_wrapper_)
native_wrapper_->SetFocus();
else
View::OnFocus(); // Will focus the RootView window (so we still get
// keyboard messages).
}
void Combobox::OnBlur() {
if (native_wrapper_)
native_wrapper_->HandleBlur();
}
void Combobox::GetAccessibleState(ui::AccessibleViewState* state) {
state->role = ui::AccessibilityTypes::ROLE_COMBOBOX;
state->name = accessible_name_;
state->value = model_->GetItemAt(selected_item_);
state->index = selected_item();
state->count = model()->GetItemCount();
}
void Combobox::ViewHierarchyChanged(bool is_add, View* parent, View* child) {
if (is_add && !native_wrapper_ && GetWidget()) {
// The native wrapper's lifetime will be managed by the view hierarchy after
// we call AddChildView.
native_wrapper_ = NativeComboboxWrapper::CreateWrapper(this);
AddChildView(native_wrapper_->GetView());
}
}
std::string Combobox::GetClassName() const {
return kViewClassName;
}
} // namespace views
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