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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/wm/workspace/workspace_layout_manager.h"
#include "ash/display/display_controller.h"
#include "ash/root_window_controller.h"
#include "ash/screen_util.h"
#include "ash/session_state_delegate.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shell.h"
#include "ash/wm/always_on_top_controller.h"
#include "ash/wm/window_animations.h"
#include "ash/wm/window_positioner.h"
#include "ash/wm/window_properties.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "ash/wm/wm_event.h"
#include "ash/wm/workspace/workspace_layout_manager_delegate.h"
#include "ui/aura/client/activation_client.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_observer.h"
#include "ui/base/ui_base_types.h"
#include "ui/compositor/layer.h"
#include "ui/events/event.h"
#include "ui/gfx/screen.h"
#include "ui/views/corewm/window_util.h"
using aura::Window;
namespace ash {
namespace internal {
WorkspaceLayoutManager::WorkspaceLayoutManager(aura::Window* window)
: shelf_(NULL),
window_(window),
root_window_(window->GetRootWindow()),
work_area_in_parent_(ScreenUtil::ConvertRectFromScreen(
window_,
Shell::GetScreen()->GetDisplayNearestWindow(window_).work_area())),
is_fullscreen_(GetRootWindowController(
window->GetRootWindow())->GetWindowForFullscreenMode() != NULL) {
Shell::GetInstance()->activation_client()->AddObserver(this);
Shell::GetInstance()->AddShellObserver(this);
root_window_->AddObserver(this);
}
WorkspaceLayoutManager::~WorkspaceLayoutManager() {
if (root_window_)
root_window_->RemoveObserver(this);
for (WindowSet::const_iterator i = windows_.begin(); i != windows_.end(); ++i)
(*i)->RemoveObserver(this);
Shell::GetInstance()->RemoveShellObserver(this);
Shell::GetInstance()->activation_client()->RemoveObserver(this);
}
void WorkspaceLayoutManager::SetShelf(internal::ShelfLayoutManager* shelf) {
shelf_ = shelf;
}
void WorkspaceLayoutManager::SetMaximizeBackdropDelegate(
scoped_ptr<WorkspaceLayoutManagerDelegate> delegate) {
backdrop_delegate_.reset(delegate.release());
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager, aura::LayoutManager implementation:
void WorkspaceLayoutManager::OnWindowAddedToLayout(Window* child) {
wm::WindowState* window_state = wm::GetWindowState(child);
wm::WMEvent event(wm::WM_EVENT_ADDED_TO_WORKSPACE);
window_state->OnWMEvent(&event);
windows_.insert(child);
child->AddObserver(this);
window_state->AddObserver(this);
UpdateShelfVisibility();
UpdateFullscreenState();
if (backdrop_delegate_)
backdrop_delegate_->OnWindowAddedToLayout(child);
WindowPositioner::RearrangeVisibleWindowOnShow(child);
}
void WorkspaceLayoutManager::OnWillRemoveWindowFromLayout(Window* child) {
windows_.erase(child);
child->RemoveObserver(this);
wm::GetWindowState(child)->RemoveObserver(this);
if (child->TargetVisibility())
WindowPositioner::RearrangeVisibleWindowOnHideOrRemove(child);
}
void WorkspaceLayoutManager::OnWindowRemovedFromLayout(Window* child) {
UpdateShelfVisibility();
UpdateFullscreenState();
if (backdrop_delegate_)
backdrop_delegate_->OnWindowRemovedFromLayout(child);
}
void WorkspaceLayoutManager::OnChildWindowVisibilityChanged(Window* child,
bool visible) {
wm::WindowState* window_state = wm::GetWindowState(child);
// Attempting to show a minimized window. Unminimize it.
if (visible && window_state->IsMinimized())
window_state->Unminimize();
if (child->TargetVisibility())
WindowPositioner::RearrangeVisibleWindowOnShow(child);
else
WindowPositioner::RearrangeVisibleWindowOnHideOrRemove(child);
UpdateFullscreenState();
UpdateShelfVisibility();
if (backdrop_delegate_)
backdrop_delegate_->OnChildWindowVisibilityChanged(child, visible);
}
void WorkspaceLayoutManager::SetChildBounds(
Window* child,
const gfx::Rect& requested_bounds) {
wm::WindowState* window_state = wm::GetWindowState(child);
wm::SetBoundsEvent event(wm::WM_EVENT_SET_BOUNDS, requested_bounds);
window_state->OnWMEvent(&event);
UpdateShelfVisibility();
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager, ash::ShellObserver implementation:
void WorkspaceLayoutManager::OnDisplayWorkAreaInsetsChanged() {
const gfx::Rect work_area(ScreenUtil::ConvertRectFromScreen(
window_,
Shell::GetScreen()->GetDisplayNearestWindow(window_).work_area()));
if (work_area != work_area_in_parent_) {
const wm::WMEvent event(wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED);
AdjustAllWindowsBoundsForWorkAreaChange(&event);
}
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager, aura::WindowObserver implementation:
void WorkspaceLayoutManager::OnWindowHierarchyChanged(
const WindowObserver::HierarchyChangeParams& params) {
if (!wm::GetWindowState(params.target)->IsActive())
return;
// If the window is already tracked by the workspace this update would be
// redundant as the fullscreen and shelf state would have been handled in
// OnWindowAddedToLayout.
if (windows_.find(params.target) != windows_.end())
return;
// If the active window has moved to this root window then update the
// fullscreen state.
// TODO(flackr): Track the active window leaving this root window and update
// the fullscreen state accordingly.
if (params.new_parent && params.new_parent->GetRootWindow() == root_window_) {
UpdateFullscreenState();
UpdateShelfVisibility();
}
}
void WorkspaceLayoutManager::OnWindowPropertyChanged(Window* window,
const void* key,
intptr_t old) {
if (key == aura::client::kAlwaysOnTopKey &&
window->GetProperty(aura::client::kAlwaysOnTopKey)) {
GetRootWindowController(window->GetRootWindow())->
always_on_top_controller()->GetContainer(window)->AddChild(window);
}
}
void WorkspaceLayoutManager::OnWindowStackingChanged(aura::Window* window) {
UpdateShelfVisibility();
UpdateFullscreenState();
if (backdrop_delegate_)
backdrop_delegate_->OnWindowStackingChanged(window);
}
void WorkspaceLayoutManager::OnWindowDestroying(aura::Window* window) {
if (root_window_ == window) {
root_window_->RemoveObserver(this);
root_window_ = NULL;
}
}
void WorkspaceLayoutManager::OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds) {
if (root_window_ == window) {
const wm::WMEvent wm_event(wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED);
AdjustAllWindowsBoundsForWorkAreaChange(&wm_event);
}
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager,
// aura::client::ActivationChangeObserver implementation:
void WorkspaceLayoutManager::OnWindowActivated(aura::Window* gained_active,
aura::Window* lost_active) {
wm::WindowState* window_state = wm::GetWindowState(gained_active);
if (window_state && window_state->IsMinimized() &&
!gained_active->IsVisible()) {
window_state->Unminimize();
DCHECK(!window_state->IsMinimized());
}
UpdateFullscreenState();
UpdateShelfVisibility();
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager, wm::WindowStateObserver implementation:
void WorkspaceLayoutManager::OnPostWindowStateTypeChange(
wm::WindowState* window_state,
wm::WindowStateType old_type) {
// Notify observers that fullscreen state may be changing.
if (window_state->IsFullscreen() ||
old_type == wm::WINDOW_STATE_TYPE_FULLSCREEN) {
UpdateFullscreenState();
}
UpdateShelfVisibility();
if (backdrop_delegate_)
backdrop_delegate_->OnPostWindowStateTypeChange(window_state, old_type);
}
//////////////////////////////////////////////////////////////////////////////
// WorkspaceLayoutManager, private:
void WorkspaceLayoutManager::AdjustAllWindowsBoundsForWorkAreaChange(
const wm::WMEvent* event) {
DCHECK(event->type() == wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED ||
event->type() == wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED);
work_area_in_parent_ = ScreenUtil::ConvertRectFromScreen(
window_,
Shell::GetScreen()->GetDisplayNearestWindow(window_).work_area());
// Don't do any adjustments of the insets while we are in screen locked mode.
// This would happen if the launcher was auto hidden before the login screen
// was shown and then gets shown when the login screen gets presented.
if (event->type() == wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED &&
Shell::GetInstance()->session_state_delegate()->IsScreenLocked())
return;
// If a user plugs an external display into a laptop running Aura the
// display size will change. Maximized windows need to resize to match.
// We also do this when developers running Aura on a desktop manually resize
// the host window.
// We also need to do this when the work area insets changes.
for (WindowSet::const_iterator it = windows_.begin();
it != windows_.end();
++it) {
wm::GetWindowState(*it)->OnWMEvent(event);
}
}
void WorkspaceLayoutManager::UpdateShelfVisibility() {
if (shelf_)
shelf_->UpdateVisibilityState();
}
void WorkspaceLayoutManager::UpdateFullscreenState() {
// TODO(flackr): The fullscreen state is currently tracked per workspace
// but the shell notification implies a per root window state. Currently
// only windows in the default workspace container will go fullscreen but
// this should really be tracked by the RootWindowController since
// technically any container could get a fullscreen window.
if (!shelf_)
return;
bool is_fullscreen = GetRootWindowController(
window_->GetRootWindow())->GetWindowForFullscreenMode() != NULL;
if (is_fullscreen != is_fullscreen_) {
ash::Shell::GetInstance()->NotifyFullscreenStateChange(
is_fullscreen, window_->GetRootWindow());
is_fullscreen_ = is_fullscreen;
}
}
} // namespace internal
} // namespace ash
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