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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/services/window_manager/view_targeter.h"
#include "mojo/services/window_manager/capture_controller.h"
#include "mojo/services/window_manager/focus_controller.h"
#include "mojo/services/window_manager/view_target.h"
namespace window_manager {
ViewTargeter::ViewTargeter() {}
ViewTargeter::~ViewTargeter() {}
ui::EventTarget* ViewTargeter::FindTargetForEvent(ui::EventTarget* root,
ui::Event* event) {
ViewTarget* view = static_cast<ViewTarget*>(root);
ViewTarget* target =
event->IsKeyEvent()
? FindTargetForKeyEvent(view, *static_cast<ui::KeyEvent*>(event))
: static_cast<ViewTarget*>(
EventTargeter::FindTargetForEvent(root, event));
// TODO(erg): The aura version of this method does a lot of work to handle
// dispatching to a target that isn't a child of |view|. For now, punt on
// this.
DCHECK_EQ(view->GetRoot(), target->GetRoot());
return target;
}
ui::EventTarget* ViewTargeter::FindTargetForLocatedEvent(
ui::EventTarget* root,
ui::LocatedEvent* event) {
ViewTarget* view = static_cast<ViewTarget*>(root);
if (!view->HasParent()) {
ViewTarget* target = FindTargetInRootView(view, *event);
if (target) {
view->ConvertEventToTarget(target, event);
return target;
}
}
return EventTargeter::FindTargetForLocatedEvent(view, event);
}
bool ViewTargeter::SubtreeCanAcceptEvent(ui::EventTarget* target,
const ui::LocatedEvent& event) const {
ViewTarget* view = static_cast<ViewTarget*>(target);
if (!view->IsVisible())
return false;
// TODO(erg): We may need to keep track of the parent on ViewTarget, because
// we have a check here about
// WindowDelegate::ShouldDescendIntoChildForEventHandling().
// TODO(sky): decide if we really want this. If we do, it should be a public
// constant and documented.
if (view->view()->shared_properties().count("deliver-events-to-parent"))
return false;
return true;
}
bool ViewTargeter::EventLocationInsideBounds(
ui::EventTarget* target,
const ui::LocatedEvent& event) const {
ViewTarget* view = static_cast<ViewTarget*>(target);
gfx::Point point = event.location();
const ViewTarget* parent = view->GetParent();
if (parent)
ViewTarget::ConvertPointToTarget(parent, view, &point);
return gfx::Rect(view->GetBounds().size()).Contains(point);
}
ViewTarget* ViewTargeter::FindTargetForKeyEvent(ViewTarget* view_target,
const ui::KeyEvent& key) {
FocusController* focus_controller = GetFocusController(view_target->view());
if (focus_controller) {
mojo::View* focused_view = focus_controller->GetFocusedView();
if (focused_view)
return ViewTarget::TargetFromView(focused_view);
}
return view_target;
}
ViewTarget* ViewTargeter::FindTargetInRootView(ViewTarget* root_view,
const ui::LocatedEvent& event) {
// TODO(erg): This here is important because it resolves
// mouse_pressed_handler() in the aura version. This is what makes sure
// that a view gets both the mouse down and up.
CaptureController* capture_controller =
GetCaptureController(root_view->view());
if (capture_controller) {
mojo::View* capture_view = capture_controller->GetCapture();
if (capture_view)
return ViewTarget::TargetFromView(capture_view);
}
// TODO(erg): There's a whole bunch of junk about handling touch events
// here. Handle later.
return nullptr;
}
} // namespace window_manager
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