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// Copyright 2014 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 "mojo/views/native_widget_view_manager.h"
#include "mojo/aura/window_tree_host_mojo.h"
#include "mojo/services/public/cpp/input_events/input_events_type_converters.h"
#include "mojo/services/public/cpp/view_manager/view.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/client/default_capture_client.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/base/ime/input_method.h"
#include "ui/base/ime/input_method_delegate.h"
#include "ui/base/ime/input_method_factory.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/wm/core/base_focus_rules.h"
#include "ui/wm/core/capture_controller.h"
#include "ui/wm/core/focus_controller.h"
namespace mojo {
namespace {
// TODO: figure out what this should be.
class FocusRulesImpl : public wm::BaseFocusRules {
public:
FocusRulesImpl() {}
virtual ~FocusRulesImpl() {}
virtual bool SupportsChildActivation(aura::Window* window) const OVERRIDE {
return true;
}
private:
DISALLOW_COPY_AND_ASSIGN(FocusRulesImpl);
};
class MinimalInputEventFilter : public ui::internal::InputMethodDelegate,
public ui::EventHandler {
public:
explicit MinimalInputEventFilter(aura::Window* root)
: root_(root) {
ui::InitializeInputMethodForTesting();
input_method_ = ui::CreateInputMethod(this, gfx::kNullAcceleratedWidget);
input_method_->Init(true);
root_->AddPreTargetHandler(this);
root_->SetProperty(aura::client::kRootWindowInputMethodKey,
input_method_.get());
}
virtual ~MinimalInputEventFilter() {
root_->RemovePreTargetHandler(this);
root_->SetProperty(aura::client::kRootWindowInputMethodKey,
static_cast<ui::InputMethod*>(NULL));
}
private:
// ui::EventHandler:
virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
// See the comment in InputMethodEventFilter::OnKeyEvent() for details.
if (event->IsTranslated()) {
event->SetTranslated(false);
} else {
if (input_method_->DispatchKeyEvent(*event))
event->StopPropagation();
}
}
// ui::internal::InputMethodDelegate:
virtual bool DispatchKeyEventPostIME(const ui::KeyEvent& event) OVERRIDE {
// See the comment in InputMethodEventFilter::DispatchKeyEventPostIME() for
// details.
ui::KeyEvent aura_event(event);
aura_event.SetTranslated(true);
ui::EventDispatchDetails details =
root_->GetHost()->dispatcher()->OnEventFromSource(&aura_event);
return aura_event.handled() || details.dispatcher_destroyed;
}
aura::Window* root_;
scoped_ptr<ui::InputMethod> input_method_;
DISALLOW_COPY_AND_ASSIGN(MinimalInputEventFilter);
};
} // namespace
NativeWidgetViewManager::NativeWidgetViewManager(
views::internal::NativeWidgetDelegate* delegate, Node* node)
: NativeWidgetAura(delegate),
node_(node),
view_(node_->active_view()) {
node_->AddObserver(this);
if (view_)
view_->AddObserver(this);
window_tree_host_.reset(new WindowTreeHostMojo(node_, this));
window_tree_host_->InitHost();
ime_filter_.reset(
new MinimalInputEventFilter(window_tree_host_->window()));
focus_client_.reset(new wm::FocusController(new FocusRulesImpl));
aura::client::SetFocusClient(window_tree_host_->window(),
focus_client_.get());
aura::client::SetActivationClient(window_tree_host_->window(),
focus_client_.get());
window_tree_host_->window()->AddPreTargetHandler(focus_client_.get());
aura::client::SetCaptureClient(
window_tree_host_->window(),
new aura::client::DefaultCaptureClient(window_tree_host_->window()));
}
NativeWidgetViewManager::~NativeWidgetViewManager() {
if (view_)
view_->RemoveObserver(this);
if (node_)
node_->RemoveObserver(this);
}
void NativeWidgetViewManager::InitNativeWidget(
const views::Widget::InitParams& in_params) {
views::Widget::InitParams params(in_params);
params.parent = window_tree_host_->window();
NativeWidgetAura::InitNativeWidget(params);
capture_client_.reset(
new wm::ScopedCaptureClient(window_tree_host_->window()));
}
void NativeWidgetViewManager::CompositorContentsChanged(
const SkBitmap& bitmap) {
if (view_)
view_->SetContents(bitmap);
}
void NativeWidgetViewManager::OnNodeDestroyed(Node* node) {
DCHECK_EQ(node, node_);
node->RemoveObserver(this);
node_ = NULL;
window_tree_host_.reset();
}
void NativeWidgetViewManager::OnNodeBoundsChanged(Node* node,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds) {
GetWidget()->SetBounds(gfx::Rect(node->bounds().size()));
}
void NativeWidgetViewManager::OnNodeActiveViewChanged(
Node* node,
View* old_view,
View* new_view) {
if (old_view)
old_view->RemoveObserver(this);
if (new_view)
new_view->AddObserver(this);
view_ = new_view;
}
void NativeWidgetViewManager::OnViewInputEvent(View* view,
const EventPtr& event) {
scoped_ptr<ui::Event> ui_event(event.To<scoped_ptr<ui::Event> >());
if (ui_event)
window_tree_host_->SendEventToProcessor(ui_event.get());
}
void NativeWidgetViewManager::OnViewDestroyed(View* view) {
DCHECK_EQ(view, view_);
view->RemoveObserver(this);
view_ = NULL;
}
} // namespace mojo
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