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// Copyright (c) 2012 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 "ash/system/tray/tray_event_filter.h"
#include "ash/root_window_controller.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/system/tray/tray_background_view.h"
#include "ash/system/tray/tray_bubble_wrapper.h"
#include "ash/system/tray/tray_constants.h"
#include "ash/system/tray/tray_event_filter.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace internal {
TrayEventFilter::TrayEventFilter() {
}
TrayEventFilter::~TrayEventFilter() {
DCHECK(wrappers_.empty());
}
void TrayEventFilter::AddWrapper(TrayBubbleWrapper* wrapper) {
bool was_empty = wrappers_.empty();
wrappers_.insert(wrapper);
if (was_empty && !wrappers_.empty())
ash::Shell::GetInstance()->AddPreTargetHandler(this);
}
void TrayEventFilter::RemoveWrapper(TrayBubbleWrapper* wrapper) {
wrappers_.erase(wrapper);
if (wrappers_.empty())
ash::Shell::GetInstance()->RemovePreTargetHandler(this);
}
void TrayEventFilter::OnMouseEvent(ui::MouseEvent* event) {
if (event->type() == ui::ET_MOUSE_PRESSED &&
ProcessLocatedEvent(event)) {
event->StopPropagation();
}
}
void TrayEventFilter::OnTouchEvent(ui::TouchEvent* event) {
if (event->type() == ui::ET_TOUCH_PRESSED && ProcessLocatedEvent(event))
event->StopPropagation();
}
bool TrayEventFilter::ProcessLocatedEvent(ui::LocatedEvent* event) {
if (event->target()) {
aura::Window* target = static_cast<aura::Window*>(event->target());
// Don't process events that occurred inside an embedded menu.
internal::RootWindowController* root_controller =
internal::GetRootWindowController(target->GetRootWindow());
if (root_controller && root_controller->GetContainer(
internal::kShellWindowId_MenuContainer)->Contains(target)) {
return false;
}
}
// Check the boundary for all wrappers, and do not handle the event if it
// happens inside of any of those wrappers.
for (std::set<TrayBubbleWrapper*>::const_iterator iter = wrappers_.begin();
iter != wrappers_.end(); ++iter) {
const TrayBubbleWrapper* wrapper = *iter;
const views::Widget* bubble_widget = wrapper->bubble_widget();
if (!bubble_widget)
continue;
gfx::Rect bounds = bubble_widget->GetWindowBoundsInScreen();
bounds.Inset(wrapper->bubble_view()->GetBorderInsets());
aura::Window* root = bubble_widget->GetNativeView()->GetRootWindow();
aura::client::ScreenPositionClient* screen_position_client =
aura::client::GetScreenPositionClient(root);
gfx::Point screen_point(event->root_location());
screen_position_client->ConvertPointToScreen(root, &screen_point);
if (bounds.Contains(screen_point))
return false;
if (wrapper->tray()) {
// If the user clicks on the parent tray, don't process the event here,
// let the tray logic handle the event and determine show/hide behavior.
bounds = wrapper->tray()->GetBoundsInScreen();
if (bounds.Contains(screen_point))
return false;
}
}
// Handle clicking outside the bubble and tray and return true if the
// event was handled.
// Cannot iterate |wrappers_| directly, because clicking outside will remove
// the wrapper, which shrinks |wrappers_| unsafely.
std::set<TrayBackgroundView*> trays;
for (std::set<TrayBubbleWrapper*>::iterator iter = wrappers_.begin();
iter != wrappers_.end(); ++iter) {
trays.insert((*iter)->tray());
}
bool handled = false;
for (std::set<TrayBackgroundView*>::iterator iter = trays.begin();
iter != trays.end(); ++iter) {
handled |= (*iter)->ClickedOutsideBubble();
}
return handled;
}
} // namespace internal
} // namespace ash
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