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chromium / chromium / src / 4af1869e97cdf585994c422c22423f6d6fcf68ce / . / services / ui / ws / window_tree.cc
blob: f5ba4ab290559cb3a2d01a5d54a5549f9280700b [file] [log] [blame]
// 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 "services/ui/ws/window_tree.h"
#include <stddef.h>
#include <utility>
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "mojo/public/cpp/bindings/stl_converters.h"
#include "services/ui/ws/default_access_policy.h"
#include "services/ui/ws/display.h"
#include "services/ui/ws/display_manager.h"
#include "services/ui/ws/event_matcher.h"
#include "services/ui/ws/focus_controller.h"
#include "services/ui/ws/operation.h"
#include "services/ui/ws/platform_display.h"
#include "services/ui/ws/server_window.h"
#include "services/ui/ws/server_window_compositor_frame_sink_manager.h"
#include "services/ui/ws/server_window_observer.h"
#include "services/ui/ws/user_display_manager.h"
#include "services/ui/ws/window_manager_display_root.h"
#include "services/ui/ws/window_manager_state.h"
#include "services/ui/ws/window_server.h"
#include "services/ui/ws/window_tree_binding.h"
#include "ui/display/display.h"
#include "ui/platform_window/mojo/ime_type_converters.h"
#include "ui/platform_window/text_input_state.h"
using mojo::InterfaceRequest;
namespace ui {
namespace ws {
class TargetedEvent : public ServerWindowObserver {
public:
TargetedEvent(ServerWindow* target, const ui::Event& event)
: target_(target), event_(ui::Event::Clone(event)) {
target_->AddObserver(this);
}
~TargetedEvent() override {
if (target_)
target_->RemoveObserver(this);
}
ServerWindow* target() { return target_; }
std::unique_ptr<ui::Event> TakeEvent() { return std::move(event_); }
private:
// ServerWindowObserver:
void OnWindowDestroyed(ServerWindow* window) override {
DCHECK_EQ(target_, window);
target_->RemoveObserver(this);
target_ = nullptr;
}
ServerWindow* target_;
std::unique_ptr<ui::Event> event_;
DISALLOW_COPY_AND_ASSIGN(TargetedEvent);
};
WindowTree::WindowTree(WindowServer* window_server,
const UserId& user_id,
ServerWindow* root,
std::unique_ptr<AccessPolicy> access_policy)
: window_server_(window_server),
user_id_(user_id),
id_(window_server_->GetAndAdvanceNextClientId()),
next_window_id_(1),
access_policy_(std::move(access_policy)),
event_ack_id_(0),
window_manager_internal_(nullptr) {
if (root)
roots_.insert(root);
access_policy_->Init(id_, this);
}
WindowTree::~WindowTree() {
DestroyWindows();
// We alert the WindowManagerState that we're destroying this state here
// because WindowManagerState would attempt to use things that wouldn't have
// been cleaned up by OnWindowDestroyingTreeImpl().
if (window_manager_state_)
window_manager_state_->OnWillDestroyTree(this);
}
void WindowTree::Init(std::unique_ptr<WindowTreeBinding> binding,
mojom::WindowTreePtr tree) {
DCHECK(!binding_);
binding_ = std::move(binding);
if (roots_.empty())
return;
std::vector<const ServerWindow*> to_send;
CHECK_EQ(1u, roots_.size());
const ServerWindow* root = *roots_.begin();
GetUnknownWindowsFrom(root, &to_send);
Display* display = GetDisplay(root);
int64_t display_id =
display ? display->GetId() : display::Display::kInvalidDisplayID;
const ServerWindow* focused_window =
display ? display->GetFocusedWindow() : nullptr;
if (focused_window)
focused_window = access_policy_->GetWindowForFocusChange(focused_window);
ClientWindowId focused_window_id;
if (focused_window)
IsWindowKnown(focused_window, &focused_window_id);
const bool drawn = root->parent() && root->parent()->IsDrawn();
client()->OnEmbed(id_, WindowToWindowData(to_send.front()), std::move(tree),
display_id, focused_window_id.id, drawn);
}
void WindowTree::ConfigureWindowManager() {
// ConfigureWindowManager() should be called early on, before anything
// else. |waiting_for_top_level_window_info_| must be null as if
// |waiting_for_top_level_window_info_| is non-null it means we're about to
// create an associated interface, which doesn't work with pause/resume.
// TODO(sky): DCHECK temporary until 626869 is sorted out.
DCHECK(!waiting_for_top_level_window_info_);
DCHECK(!window_manager_internal_);
window_manager_internal_ = binding_->GetWindowManager();
window_manager_internal_->OnConnect(id_);
window_manager_state_ = base::MakeUnique<WindowManagerState>(this);
}
const ServerWindow* WindowTree::GetWindow(const WindowId& id) const {
if (id_ == id.client_id) {
auto iter = created_window_map_.find(id);
return iter == created_window_map_.end() ? nullptr : iter->second;
}
return window_server_->GetWindow(id);
}
bool WindowTree::IsWindowKnown(const ServerWindow* window,
ClientWindowId* id) const {
if (!window)
return false;
auto iter = window_id_to_client_id_map_.find(window->id());
if (iter == window_id_to_client_id_map_.end())
return false;
if (id)
*id = iter->second;
return true;
}
bool WindowTree::HasRoot(const ServerWindow* window) const {
return roots_.count(window) > 0;
}
const ServerWindow* WindowTree::GetWindowByClientId(
const ClientWindowId& id) const {
auto iter = client_id_to_window_id_map_.find(id);
return iter == client_id_to_window_id_map_.end() ? nullptr
: GetWindow(iter->second);
}
const Display* WindowTree::GetDisplay(const ServerWindow* window) const {
return window ? display_manager()->GetDisplayContaining(window) : nullptr;
}
const WindowManagerDisplayRoot* WindowTree::GetWindowManagerDisplayRoot(
const ServerWindow* window) const {
return window ? display_manager()->GetWindowManagerDisplayRoot(window)
: nullptr;
}
DisplayManager* WindowTree::display_manager() {
return window_server_->display_manager();
}
const DisplayManager* WindowTree::display_manager() const {
return window_server_->display_manager();
}
void WindowTree::PrepareForWindowServerShutdown() {
window_manager_internal_client_binding_.reset();
binding_->ResetClientForShutdown();
if (window_manager_internal_)
window_manager_internal_ = binding_->GetWindowManager();
}
void WindowTree::AddRootForWindowManager(const ServerWindow* root) {
DCHECK(window_manager_internal_);
const ClientWindowId client_window_id(WindowIdToTransportId(root->id()));
DCHECK_EQ(0u, client_id_to_window_id_map_.count(client_window_id));
client_id_to_window_id_map_[client_window_id] = root->id();
window_id_to_client_id_map_[root->id()] = client_window_id;
roots_.insert(root);
Display* display = GetDisplay(root);
DCHECK(display);
window_manager_internal_->WmNewDisplayAdded(display->ToDisplay(),
WindowToWindowData(root),
root->parent()->IsDrawn());
}
void WindowTree::OnWindowDestroyingTreeImpl(WindowTree* tree) {
if (event_source_wms_ && event_source_wms_->window_tree() == tree)
event_source_wms_ = nullptr;
// Notify our client if |tree| was embedded in any of our windows.
for (const auto* tree_root : tree->roots_) {
const bool owns_tree_root = tree_root->id().client_id == id_;
if (owns_tree_root) {
client()->OnEmbeddedAppDisconnected(
ClientWindowIdForWindow(tree_root).id);
}
}
}
void WindowTree::OnWmDisplayModified(const display::Display& display) {
window_manager_internal_->WmDisplayModified(display);
}
void WindowTree::NotifyChangeCompleted(
uint32_t change_id,
mojom::WindowManagerErrorCode error_code) {
client()->OnChangeCompleted(
change_id, error_code == mojom::WindowManagerErrorCode::SUCCESS);
}
bool WindowTree::SetCapture(const ClientWindowId& client_window_id) {
ServerWindow* window = GetWindowByClientId(client_window_id);
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
ServerWindow* current_capture_window =
display_root ? display_root->window_manager_state()->capture_window()
: nullptr;
if (window && window->IsDrawn() && display_root &&
display_root->window_manager_state()->IsActive() &&
access_policy_->CanSetCapture(window) &&
(!current_capture_window ||
access_policy_->CanSetCapture(current_capture_window))) {
Operation op(this, window_server_, OperationType::SET_CAPTURE);
return display_root->window_manager_state()->SetCapture(window, id_);
}
return false;
}
bool WindowTree::ReleaseCapture(const ClientWindowId& client_window_id) {
ServerWindow* window = GetWindowByClientId(client_window_id);
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
ServerWindow* current_capture_window =
display_root ? display_root->window_manager_state()->capture_window()
: nullptr;
if (!window || !display_root ||
!display_root->window_manager_state()->IsActive() ||
(current_capture_window &&
!access_policy_->CanSetCapture(current_capture_window)) ||
window != current_capture_window) {
return false;
}
Operation op(this, window_server_, OperationType::RELEASE_CAPTURE);
return display_root->window_manager_state()->SetCapture(nullptr,
kInvalidClientId);
}
bool WindowTree::NewWindow(
const ClientWindowId& client_window_id,
const std::map<std::string, std::vector<uint8_t>>& properties) {
if (!IsValidIdForNewWindow(client_window_id))
return false;
const WindowId window_id = GenerateNewWindowId();
DCHECK(!GetWindow(window_id));
ServerWindow* window =
window_server_->CreateServerWindow(window_id, properties);
created_window_map_[window_id] = window;
client_id_to_window_id_map_[client_window_id] = window_id;
window_id_to_client_id_map_[window_id] = client_window_id;
return true;
}
bool WindowTree::AddWindow(const ClientWindowId& parent_id,
const ClientWindowId& child_id) {
ServerWindow* parent = GetWindowByClientId(parent_id);
ServerWindow* child = GetWindowByClientId(child_id);
if (parent && child && child->parent() != parent &&
!child->Contains(parent) && access_policy_->CanAddWindow(parent, child)) {
Operation op(this, window_server_, OperationType::ADD_WINDOW);
parent->Add(child);
return true;
}
return false;
}
bool WindowTree::AddTransientWindow(const ClientWindowId& window_id,
const ClientWindowId& transient_window_id) {
ServerWindow* window = GetWindowByClientId(window_id);
ServerWindow* transient_window = GetWindowByClientId(transient_window_id);
if (window && transient_window && !transient_window->Contains(window) &&
access_policy_->CanAddTransientWindow(window, transient_window)) {
Operation op(this, window_server_, OperationType::ADD_TRANSIENT_WINDOW);
return window->AddTransientWindow(transient_window);
}
return false;
}
bool WindowTree::DeleteWindow(const ClientWindowId& window_id) {
ServerWindow* window = GetWindowByClientId(window_id);
DVLOG(3) << "removing window from parent client=" << id_
<< " client window_id= " << window_id.id << " global window_id="
<< (window ? WindowIdToTransportId(window->id()) : 0);
if (!window)
return false;
if (roots_.count(window) > 0) {
// Deleting a root behaves as an unembed.
window_server_->OnTreeMessagedClient(id_);
RemoveRoot(window, RemoveRootReason::UNEMBED);
return true;
}
if (!access_policy_->CanDeleteWindow(window) &&
!ShouldRouteToWindowManager(window)) {
return false;
}
// Have the owner of the tree service the actual delete.
WindowTree* tree = window_server_->GetTreeWithId(window->id().client_id);
return tree && tree->DeleteWindowImpl(this, window);
}
bool WindowTree::SetModal(const ClientWindowId& window_id) {
ServerWindow* window = GetWindowByClientId(window_id);
if (window && access_policy_->CanSetModal(window)) {
WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(window);
if (window->transient_parent()) {
window->SetModal();
} else if (user_id_ != InvalidUserId()) {
if (display_root)
display_root->window_manager_state()->AddSystemModalWindow(window);
} else {
return false;
}
if (display_root)
display_root->window_manager_state()->ReleaseCaptureBlockedByModalWindow(
window);
return true;
}
return false;
}
std::vector<const ServerWindow*> WindowTree::GetWindowTree(
const ClientWindowId& window_id) const {
const ServerWindow* window = GetWindowByClientId(window_id);
std::vector<const ServerWindow*> windows;
if (window)
GetWindowTreeImpl(window, &windows);
return windows;
}
bool WindowTree::SetWindowVisibility(const ClientWindowId& window_id,
bool visible) {
ServerWindow* window = GetWindowByClientId(window_id);
if (!window || !access_policy_->CanChangeWindowVisibility(window))
return false;
if (window->visible() == visible)
return true;
Operation op(this, window_server_, OperationType::SET_WINDOW_VISIBILITY);
window->SetVisible(visible);
return true;
}
bool WindowTree::SetWindowOpacity(const ClientWindowId& window_id,
float opacity) {
ServerWindow* window = GetWindowByClientId(window_id);
if (!window || !access_policy_->CanChangeWindowOpacity(window))
return false;
if (window->opacity() == opacity)
return true;
Operation op(this, window_server_, OperationType::SET_WINDOW_OPACITY);
window->SetOpacity(opacity);
return true;
}
bool WindowTree::SetFocus(const ClientWindowId& window_id) {
ServerWindow* window = GetWindowByClientId(window_id);
ServerWindow* currently_focused = window_server_->GetFocusedWindow();
if (!currently_focused && !window) {
DVLOG(1) << "SetFocus failure, no focused window to clear.";
return false;
}
Display* display = GetDisplay(window);
if (window && (!display || !window->can_focus() || !window->IsDrawn())) {
DVLOG(1) << "SetFocus failure, window cannot be focused.";
return false;
}
if (!access_policy_->CanSetFocus(window)) {
DVLOG(1) << "SetFocus failure, blocked by access policy.";
return false;
}
Operation op(this, window_server_, OperationType::SET_FOCUS);
bool success = window_server_->SetFocusedWindow(window);
if (!success) {
DVLOG(1) << "SetFocus failure, could not SetFocusedWindow.";
}
return success;
}
bool WindowTree::Embed(const ClientWindowId& window_id,
mojom::WindowTreeClientPtr client,
uint32_t flags) {
if (!client || !CanEmbed(window_id))
return false;
ServerWindow* window = GetWindowByClientId(window_id);
PrepareForEmbed(window);
// When embedding we don't know the user id of where the TreeClient came
// from. Use an invalid id, which limits what the client is able to do.
window_server_->EmbedAtWindow(window, InvalidUserId(), std::move(client),
flags,
base::WrapUnique(new DefaultAccessPolicy));
return true;
}
void WindowTree::DispatchInputEvent(ServerWindow* target,
const ui::Event& event) {
if (event_ack_id_) {
// This is currently waiting for an event ack. Add it to the queue.
event_queue_.push(base::MakeUnique<TargetedEvent>(target, event));
// TODO(sad): If the |event_queue_| grows too large, then this should notify
// Display, so that it can stop sending events.
return;
}
// If there are events in the queue, then store this new event in the queue,
// and dispatch the latest event from the queue instead that still has a live
// target.
if (!event_queue_.empty()) {
event_queue_.push(base::MakeUnique<TargetedEvent>(target, event));
return;
}
DispatchInputEventImpl(target, event);
}
bool WindowTree::IsWaitingForNewTopLevelWindow(uint32_t wm_change_id) {
return waiting_for_top_level_window_info_ &&
waiting_for_top_level_window_info_->wm_change_id == wm_change_id;
}
void WindowTree::OnWindowManagerCreatedTopLevelWindow(
uint32_t wm_change_id,
uint32_t client_change_id,
const ServerWindow* window) {
DCHECK(IsWaitingForNewTopLevelWindow(wm_change_id));
std::unique_ptr<WaitingForTopLevelWindowInfo>
waiting_for_top_level_window_info(
std::move(waiting_for_top_level_window_info_));
binding_->SetIncomingMethodCallProcessingPaused(false);
// We were paused, so the id should still be valid.
DCHECK(IsValidIdForNewWindow(
waiting_for_top_level_window_info->client_window_id));
client_id_to_window_id_map_[waiting_for_top_level_window_info
->client_window_id] = window->id();
window_id_to_client_id_map_[window->id()] =
waiting_for_top_level_window_info->client_window_id;
roots_.insert(window);
Display* display = GetDisplay(window);
int64_t display_id =
display ? display->GetId() : display::Display::kInvalidDisplayID;
const bool drawn = window->parent() && window->parent()->IsDrawn();
client()->OnTopLevelCreated(client_change_id, WindowToWindowData(window),
display_id, drawn);
}
void WindowTree::AddActivationParent(const ClientWindowId& window_id) {
ServerWindow* window = GetWindowByClientId(window_id);
if (window) {
Display* display = GetDisplay(window);
if (display)
display->AddActivationParent(window);
else
DVLOG(1) << "AddActivationParent window not associated with display";
} else {
DVLOG(1) << "AddActivationParent supplied invalid window id";
}
}
void WindowTree::OnChangeCompleted(uint32_t change_id, bool success) {
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::OnAccelerator(uint32_t accelerator_id,
const ui::Event& event,
bool needs_ack) {
DCHECK(window_manager_internal_);
if (needs_ack)
GenerateEventAckId();
else
DCHECK_EQ(0u, event_ack_id_);
// TODO(moshayedi): crbug.com/617167. Don't clone even once we map
// mojom::Event directly to ui::Event.
window_manager_internal_->OnAccelerator(event_ack_id_, accelerator_id,
ui::Event::Clone(event));
}
void WindowTree::OnDisplayDestroying(int64_t display_id) {
DCHECK(window_manager_internal_);
window_manager_internal_->WmDisplayRemoved(display_id);
}
void WindowTree::ClientJankinessChanged(WindowTree* tree) {
tree->janky_ = !tree->janky_;
// Don't inform the client if it is the source of jank (which generally only
// happens while debugging).
if (window_manager_internal_ && tree != this) {
window_manager_internal_->WmClientJankinessChanged(
tree->id(), tree->janky());
}
}
void WindowTree::ProcessWindowBoundsChanged(const ServerWindow* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds,
bool originated_change) {
ClientWindowId client_window_id;
if (originated_change || !IsWindowKnown(window, &client_window_id))
return;
client()->OnWindowBoundsChanged(client_window_id.id, old_bounds, new_bounds);
}
void WindowTree::ProcessClientAreaChanged(
const ServerWindow* window,
const gfx::Insets& new_client_area,
const std::vector<gfx::Rect>& new_additional_client_areas,
bool originated_change) {
ClientWindowId client_window_id;
if (originated_change || !IsWindowKnown(window, &client_window_id))
return;
client()->OnClientAreaChanged(
client_window_id.id, new_client_area,
std::vector<gfx::Rect>(new_additional_client_areas));
}
void WindowTree::ProcessWillChangeWindowHierarchy(
const ServerWindow* window,
const ServerWindow* new_parent,
const ServerWindow* old_parent,
bool originated_change) {
if (originated_change)
return;
const bool old_drawn = window->IsDrawn();
const bool new_drawn =
window->visible() && new_parent && new_parent->IsDrawn();
if (old_drawn == new_drawn)
return;
NotifyDrawnStateChanged(window, new_drawn);
}
void WindowTree::ProcessWindowPropertyChanged(
const ServerWindow* window,
const std::string& name,
const std::vector<uint8_t>* new_data,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id))
return;
base::Optional<std::vector<uint8_t>> data;
if (new_data)
data.emplace(*new_data);
client()->OnWindowSharedPropertyChanged(client_window_id.id, name, data);
}
void WindowTree::ProcessWindowHierarchyChanged(const ServerWindow* window,
const ServerWindow* new_parent,
const ServerWindow* old_parent,
bool originated_change) {
const bool knows_new = new_parent && IsWindowKnown(new_parent);
if (originated_change || (window_server_->current_operation_type() ==
OperationType::DELETE_WINDOW) ||
(window_server_->current_operation_type() == OperationType::EMBED) ||
window_server_->DidTreeMessageClient(id_)) {
return;
}
if (!access_policy_->ShouldNotifyOnHierarchyChange(window, &new_parent,
&old_parent)) {
return;
}
// Inform the client of any new windows and update the set of windows we know
// about.
std::vector<const ServerWindow*> to_send;
if (!IsWindowKnown(window))
GetUnknownWindowsFrom(window, &to_send);
const bool knows_old = old_parent && IsWindowKnown(old_parent);
if (!knows_old && !knows_new)
return;
const ClientWindowId new_parent_client_window_id =
knows_new ? ClientWindowIdForWindow(new_parent) : ClientWindowId();
const ClientWindowId old_parent_client_window_id =
knows_old ? ClientWindowIdForWindow(old_parent) : ClientWindowId();
const ClientWindowId client_window_id =
window ? ClientWindowIdForWindow(window) : ClientWindowId();
client()->OnWindowHierarchyChanged(
client_window_id.id, old_parent_client_window_id.id,
new_parent_client_window_id.id, WindowsToWindowDatas(to_send));
window_server_->OnTreeMessagedClient(id_);
}
void WindowTree::ProcessWindowReorder(const ServerWindow* window,
const ServerWindow* relative_window,
mojom::OrderDirection direction,
bool originated_change) {
DCHECK_EQ(window->parent(), relative_window->parent());
ClientWindowId client_window_id, relative_client_window_id;
if (originated_change || !IsWindowKnown(window, &client_window_id) ||
!IsWindowKnown(relative_window, &relative_client_window_id) ||
window_server_->DidTreeMessageClient(id_))
return;
// Do not notify ordering changes of the root windows, since the client
// doesn't know about the ancestors of the roots, and so can't do anything
// about this ordering change of the root.
if (HasRoot(window) || HasRoot(relative_window))
return;
client()->OnWindowReordered(client_window_id.id, relative_client_window_id.id,
direction);
window_server_->OnTreeMessagedClient(id_);
}
void WindowTree::ProcessWindowDeleted(ServerWindow* window,
bool originated_change) {
if (window->id().client_id == id_)
created_window_map_.erase(window->id());
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id))
return;
if (HasRoot(window))
RemoveRoot(window, RemoveRootReason::DELETED);
else
RemoveFromMaps(window);
if (originated_change)
return;
client()->OnWindowDeleted(client_window_id.id);
window_server_->OnTreeMessagedClient(id_);
}
void WindowTree::ProcessWillChangeWindowVisibility(const ServerWindow* window,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id;
if (IsWindowKnown(window, &client_window_id)) {
client()->OnWindowVisibilityChanged(client_window_id.id,
!window->visible());
return;
}
bool window_target_drawn_state;
if (window->visible()) {
// Window is being hidden, won't be drawn.
window_target_drawn_state = false;
} else {
// Window is being shown. Window will be drawn if its parent is drawn.
window_target_drawn_state = window->parent() && window->parent()->IsDrawn();
}
NotifyDrawnStateChanged(window, window_target_drawn_state);
}
void WindowTree::ProcessWindowOpacityChanged(const ServerWindow* window,
float old_opacity,
float new_opacity,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id;
if (IsWindowKnown(window, &client_window_id)) {
client()->OnWindowOpacityChanged(client_window_id.id, old_opacity,
new_opacity);
}
}
void WindowTree::ProcessCursorChanged(const ServerWindow* window,
mojom::Cursor cursor_id,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id))
return;
client()->OnWindowPredefinedCursorChanged(client_window_id.id, cursor_id);
}
void WindowTree::ProcessFocusChanged(const ServerWindow* old_focused_window,
const ServerWindow* new_focused_window) {
if (window_server_->current_operation_type() == OperationType::SET_FOCUS &&
window_server_->IsOperationSource(id_)) {
return;
}
const ServerWindow* window =
new_focused_window
? access_policy_->GetWindowForFocusChange(new_focused_window)
: nullptr;
ClientWindowId client_window_id;
// If the window isn't known we'll supply null, which is ok.
IsWindowKnown(window, &client_window_id);
client()->OnWindowFocused(client_window_id.id);
}
void WindowTree::ProcessTransientWindowAdded(
const ServerWindow* window,
const ServerWindow* transient_window,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id, transient_client_window_id;
if (!IsWindowKnown(window, &client_window_id) ||
!IsWindowKnown(transient_window, &transient_client_window_id)) {
return;
}
client()->OnTransientWindowAdded(client_window_id.id,
transient_client_window_id.id);
}
void WindowTree::ProcessTransientWindowRemoved(
const ServerWindow* window,
const ServerWindow* transient_window,
bool originated_change) {
if (originated_change)
return;
ClientWindowId client_window_id, transient_client_window_id;
if (!IsWindowKnown(window, &client_window_id) ||
!IsWindowKnown(transient_window, &transient_client_window_id)) {
return;
}
client()->OnTransientWindowRemoved(client_window_id.id,
transient_client_window_id.id);
}
void WindowTree::ProcessWindowSurfaceChanged(ServerWindow* window,
const cc::SurfaceId& surface_id,
const gfx::Size& frame_size,
float device_scale_factor) {
ServerWindow* parent_window = window->parent();
ClientWindowId client_window_id, parent_client_window_id;
if (!IsWindowKnown(window, &client_window_id) ||
!IsWindowKnown(parent_window, &parent_client_window_id) ||
!created_window_map_.count(parent_window->id())) {
return;
}
client()->OnWindowSurfaceChanged(client_window_id.id, surface_id, frame_size,
device_scale_factor);
}
void WindowTree::SendToPointerWatcher(const ui::Event& event,
ServerWindow* target_window) {
if (!EventMatchesPointerWatcher(event))
return;
ClientWindowId client_window_id;
// Ignore the return value from IsWindowKnown() as in the case of the client
// not knowing the window we'll send 0, which corresponds to no window.
IsWindowKnown(target_window, &client_window_id);
client()->OnPointerEventObserved(ui::Event::Clone(event),
client_window_id.id);
}
bool WindowTree::ShouldRouteToWindowManager(const ServerWindow* window) const {
if (window_manager_state_)
return false; // We are the window manager, don't route to ourself.
// If the client created this window, then do not route it through the WM.
if (window->id().client_id == id_)
return false;
// If the client did not create the window, then it must be the root of the
// client. If not, that means the client should not know about this window,
// and so do not route the request to the WM.
if (roots_.count(window) == 0)
return false;
// The WindowManager is attached to the root of the Display, if there isn't a
// WindowManager attached no need to route to it.
const WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(window);
if (!display_root)
return false;
// Route to the windowmanager if the windowmanager created the window.
return display_root->window_manager_state()->window_tree()->id() ==
window->id().client_id;
}
void WindowTree::ProcessCaptureChanged(const ServerWindow* new_capture,
const ServerWindow* old_capture,
bool originated_change) {
ClientWindowId new_capture_window_client_id;
ClientWindowId old_capture_window_client_id;
const bool new_capture_window_known =
IsWindowKnown(new_capture, &new_capture_window_client_id);
const bool old_capture_window_known =
IsWindowKnown(old_capture, &old_capture_window_client_id);
if (!new_capture_window_known && !old_capture_window_known)
return;
if (originated_change && ((window_server_->current_operation_type() ==
OperationType::RELEASE_CAPTURE) ||
(window_server_->current_operation_type() ==
OperationType::SET_CAPTURE))) {
return;
}
client()->OnCaptureChanged(new_capture_window_client_id.id,
old_capture_window_client_id.id);
}
ClientWindowId WindowTree::ClientWindowIdForWindow(
const ServerWindow* window) const {
auto iter = window_id_to_client_id_map_.find(window->id());
DCHECK(iter != window_id_to_client_id_map_.end());
return iter->second;
}
bool WindowTree::IsValidIdForNewWindow(const ClientWindowId& id) const {
// Reserve 0 to indicate a null window.
return client_id_to_window_id_map_.count(id) == 0u &&
access_policy_->IsValidIdForNewWindow(id) && id != ClientWindowId();
}
WindowId WindowTree::GenerateNewWindowId() {
// TODO(sky): deal with wrapping and uniqueness.
return WindowId(id_, next_window_id_++);
}
bool WindowTree::CanReorderWindow(const ServerWindow* window,
const ServerWindow* relative_window,
mojom::OrderDirection direction) const {
if (!window) {
DVLOG(1) << "reorder failing: invalid window";
return false;
}
if (!relative_window) {
DVLOG(1) << "reorder failing: invalid relative window";
return false;
}
if (!window->parent()) {
DVLOG(1) << "reorder failing: no parent";
return false;
}
if (window->parent() != relative_window->parent()) {
DVLOG(1) << "reorder failing: parents differ";
return false;
}
if (!access_policy_->CanReorderWindow(window, relative_window, direction)) {
DVLOG(1) << "reorder failing: access policy denied";
return false;
}
const ServerWindow::Windows& children = window->parent()->children();
const size_t child_i =
std::find(children.begin(), children.end(), window) - children.begin();
const size_t target_i =
std::find(children.begin(), children.end(), relative_window) -
children.begin();
if ((direction == mojom::OrderDirection::ABOVE && child_i == target_i + 1) ||
(direction == mojom::OrderDirection::BELOW && child_i + 1 == target_i)) {
DVLOG(1) << "reorder failing: already in position";
return false;
}
return true;
}
bool WindowTree::DeleteWindowImpl(WindowTree* source, ServerWindow* window) {
DCHECK(window);
DCHECK_EQ(window->id().client_id, id_);
Operation op(source, window_server_, OperationType::DELETE_WINDOW);
delete window;
return true;
}
void WindowTree::GetUnknownWindowsFrom(
const ServerWindow* window,
std::vector<const ServerWindow*>* windows) {
if (!access_policy_->CanGetWindowTree(window))
return;
// This function is called in the context of a hierarchy change when the
// parent wasn't known. We need to tell the client about the window so that
// it can set the parent correctly.
windows->push_back(window);
if (IsWindowKnown(window))
return;
// There are two cases where this gets hit:
// . During init, in which case using the window id as the client id is
// fine.
// . When a window is moved to a parent of a window we know about. This is
// only encountered for the WM or embed roots. We assume such clients want
// to see the real id of the window and are only created ClientWindowIds
// with the client_id.
const ClientWindowId client_window_id(WindowIdToTransportId(window->id()));
DCHECK_EQ(0u, client_id_to_window_id_map_.count(client_window_id));
client_id_to_window_id_map_[client_window_id] = window->id();
window_id_to_client_id_map_[window->id()] = client_window_id;
if (!access_policy_->CanDescendIntoWindowForWindowTree(window))
return;
const ServerWindow::Windows& children = window->children();
for (ServerWindow* child : children)
GetUnknownWindowsFrom(child, windows);
}
bool WindowTree::RemoveFromMaps(const ServerWindow* window) {
auto iter = window_id_to_client_id_map_.find(window->id());
if (iter == window_id_to_client_id_map_.end())
return false;
client_id_to_window_id_map_.erase(iter->second);
window_id_to_client_id_map_.erase(iter);
return true;
}
void WindowTree::RemoveFromKnown(const ServerWindow* window,
std::vector<ServerWindow*>* local_windows) {
if (window->id().client_id == id_) {
if (local_windows)
local_windows->push_back(GetWindow(window->id()));
return;
}
RemoveFromMaps(window);
const ServerWindow::Windows& children = window->children();
for (ServerWindow* child : children)
RemoveFromKnown(child, local_windows);
}
void WindowTree::RemoveRoot(ServerWindow* window, RemoveRootReason reason) {
DCHECK(roots_.count(window) > 0);
roots_.erase(window);
const ClientWindowId client_window_id(ClientWindowIdForWindow(window));
// No need to do anything if we created the window.
if (window->id().client_id == id_)
return;
if (reason == RemoveRootReason::EMBED) {
client()->OnUnembed(client_window_id.id);
client()->OnWindowDeleted(client_window_id.id);
window_server_->OnTreeMessagedClient(id_);
}
// This client no longer knows about the window. Unparent any windows that
// were parented to windows in the root.
std::vector<ServerWindow*> local_windows;
RemoveFromKnown(window, &local_windows);
for (size_t i = 0; i < local_windows.size(); ++i)
local_windows[i]->parent()->Remove(local_windows[i]);
if (reason == RemoveRootReason::UNEMBED) {
// Notify the owner of the window it no longer has a client embedded in it.
// Owner is null in the case of the windowmanager unembedding itself from
// a root.
WindowTree* owning_tree =
window_server_->GetTreeWithId(window->id().client_id);
if (owning_tree) {
DCHECK(owning_tree && owning_tree != this);
owning_tree->client()->OnEmbeddedAppDisconnected(
owning_tree->ClientWindowIdForWindow(window).id);
}
window->OnEmbeddedAppDisconnected();
}
}
std::vector<mojom::WindowDataPtr> WindowTree::WindowsToWindowDatas(
const std::vector<const ServerWindow*>& windows) {
std::vector<mojom::WindowDataPtr> array(windows.size());
for (size_t i = 0; i < windows.size(); ++i)
array[i] = WindowToWindowData(windows[i]);
return array;
}
mojom::WindowDataPtr WindowTree::WindowToWindowData(
const ServerWindow* window) {
DCHECK(IsWindowKnown(window));
const ServerWindow* parent = window->parent();
// If the parent isn't known, it means the parent is not visible to us (not
// in roots), and should not be sent over.
if (parent && !IsWindowKnown(parent))
parent = nullptr;
mojom::WindowDataPtr window_data(mojom::WindowData::New());
window_data->parent_id =
parent ? ClientWindowIdForWindow(parent).id : ClientWindowId().id;
window_data->window_id =
window ? ClientWindowIdForWindow(window).id : ClientWindowId().id;
window_data->bounds = window->bounds();
window_data->properties = mojo::MapToUnorderedMap(window->properties());
window_data->visible = window->visible();
return window_data;
}
void WindowTree::GetWindowTreeImpl(
const ServerWindow* window,
std::vector<const ServerWindow*>* windows) const {
DCHECK(window);
if (!access_policy_->CanGetWindowTree(window))
return;
windows->push_back(window);
if (!access_policy_->CanDescendIntoWindowForWindowTree(window))
return;
const ServerWindow::Windows& children = window->children();
for (ServerWindow* child : children)
GetWindowTreeImpl(child, windows);
}
void WindowTree::NotifyDrawnStateChanged(const ServerWindow* window,
bool new_drawn_value) {
// Even though we don't know about window, it may be an ancestor of our root,
// in which case the change may effect our roots drawn state.
if (roots_.empty())
return;
for (auto* root : roots_) {
if (window->Contains(root) && (new_drawn_value != root->IsDrawn())) {
client()->OnWindowParentDrawnStateChanged(
ClientWindowIdForWindow(root).id, new_drawn_value);
}
}
}
void WindowTree::DestroyWindows() {
if (created_window_map_.empty())
return;
Operation op(this, window_server_, OperationType::DELETE_WINDOW);
// If we get here from the destructor we're not going to get
// ProcessWindowDeleted(). Copy the map and delete from the copy so that we
// don't have to worry about whether |created_window_map_| changes or not.
std::unordered_map<WindowId, ServerWindow*, WindowIdHash>
created_window_map_copy;
created_window_map_.swap(created_window_map_copy);
// A sibling can be a transient parent of another window so we detach windows
// from their transient parents to avoid double deletes.
for (auto& pair : created_window_map_copy) {
ServerWindow* transient_parent = pair.second->transient_parent();
if (transient_parent)
transient_parent->RemoveTransientWindow(pair.second);
}
for (auto& window_pair : created_window_map_copy)
delete window_pair.second;
}
bool WindowTree::CanEmbed(const ClientWindowId& window_id) const {
const ServerWindow* window = GetWindowByClientId(window_id);
return window && access_policy_->CanEmbed(window);
}
void WindowTree::PrepareForEmbed(ServerWindow* window) {
DCHECK(window);
// Only allow a node to be the root for one client.
WindowTree* existing_owner = window_server_->GetTreeWithRoot(window);
Operation op(this, window_server_, OperationType::EMBED);
RemoveChildrenAsPartOfEmbed(window);
if (existing_owner) {
// Never message the originating client.
window_server_->OnTreeMessagedClient(id_);
existing_owner->RemoveRoot(window, RemoveRootReason::EMBED);
}
}
void WindowTree::RemoveChildrenAsPartOfEmbed(ServerWindow* window) {
CHECK(window);
while (!window->children().empty())
window->Remove(window->children().front());
}
uint32_t WindowTree::GenerateEventAckId() {
DCHECK(!event_ack_id_);
// We do not want to create a sequential id for each event, because that can
// leak some information to the client. So instead, manufacture the id
// randomly.
event_ack_id_ = 0x1000000 | (rand() & 0xffffff);
return event_ack_id_;
}
void WindowTree::DispatchInputEventImpl(ServerWindow* target,
const ui::Event& event) {
GenerateEventAckId();
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(target);
DCHECK(display_root);
event_source_wms_ = display_root->window_manager_state();
// Should only get events from windows attached to a host.
DCHECK(event_source_wms_);
bool matched_pointer_watcher = EventMatchesPointerWatcher(event);
client()->OnWindowInputEvent(
event_ack_id_, ClientWindowIdForWindow(target).id,
ui::Event::Clone(event), matched_pointer_watcher);
}
bool WindowTree::EventMatchesPointerWatcher(const ui::Event& event) const {
if (!has_pointer_watcher_)
return false;
if (!event.IsPointerEvent())
return false;
if (pointer_watcher_want_moves_ && event.type() == ui::ET_POINTER_MOVED)
return true;
return event.type() == ui::ET_POINTER_DOWN ||
event.type() == ui::ET_POINTER_UP ||
event.type() == ui::ET_POINTER_WHEEL_CHANGED;
}
void WindowTree::NewWindow(
uint32_t change_id,
Id transport_window_id,
const base::Optional<std::unordered_map<std::string, std::vector<uint8_t>>>&
transport_properties) {
std::map<std::string, std::vector<uint8_t>> properties;
if (transport_properties.has_value())
properties = mojo::UnorderedMapToMap(transport_properties.value());
client()->OnChangeCompleted(
change_id, NewWindow(ClientWindowId(transport_window_id), properties));
}
void WindowTree::NewTopLevelWindow(
uint32_t change_id,
Id transport_window_id,
const std::unordered_map<std::string, std::vector<uint8_t>>&
transport_properties) {
// TODO(sky): rather than DCHECK, have this kill connection.
DCHECK(!window_manager_internal_); // Not valid for the windowmanager.
DCHECK(!waiting_for_top_level_window_info_);
const ClientWindowId client_window_id(transport_window_id);
// TODO(sky): need a way for client to provide context to figure out display.
Display* display = display_manager()->displays().empty()
? nullptr
: *(display_manager()->displays().begin());
// TODO(sky): move checks to accesspolicy.
WindowManagerDisplayRoot* display_root =
display && user_id_ != InvalidUserId()
? display->GetWindowManagerDisplayRootForUser(user_id_)
: nullptr;
if (!display_root ||
display_root->window_manager_state()->window_tree() == this ||
!IsValidIdForNewWindow(client_window_id)) {
client()->OnChangeCompleted(change_id, false);
return;
}
// The server creates the real window. Any further messages from the client
// may try to alter the window. Pause incoming messages so that we know we
// can't get a message for a window before the window is created. Once the
// window is created we'll resume processing.
binding_->SetIncomingMethodCallProcessingPaused(true);
const uint32_t wm_change_id =
window_server_->GenerateWindowManagerChangeId(this, change_id);
waiting_for_top_level_window_info_.reset(
new WaitingForTopLevelWindowInfo(client_window_id, wm_change_id));
display_root->window_manager_state()
->window_tree()
->window_manager_internal_->WmCreateTopLevelWindow(wm_change_id, id_,
transport_properties);
}
void WindowTree::DeleteWindow(uint32_t change_id, Id transport_window_id) {
client()->OnChangeCompleted(
change_id, DeleteWindow(ClientWindowId(transport_window_id)));
}
void WindowTree::AddWindow(uint32_t change_id, Id parent_id, Id child_id) {
client()->OnChangeCompleted(change_id, AddWindow(ClientWindowId(parent_id),
ClientWindowId(child_id)));
}
void WindowTree::RemoveWindowFromParent(uint32_t change_id, Id window_id) {
bool success = false;
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
DVLOG(3) << "removing window from parent client=" << id_
<< " client window_id= " << window_id << " global window_id="
<< (window ? WindowIdToTransportId(window->id()) : 0);
if (!window) {
DVLOG(1) << "remove failing, invalid window id=" << change_id;
} else if (!window->parent()) {
DVLOG(1) << "remove failing, no parent id=" << change_id;
} else if (!access_policy_->CanRemoveWindowFromParent(window)) {
DVLOG(1) << "remove failing, access policy disallowed id=" << change_id;
} else {
success = true;
Operation op(this, window_server_,
OperationType::REMOVE_WINDOW_FROM_PARENT);
window->parent()->Remove(window);
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::AddTransientWindow(uint32_t change_id,
Id window,
Id transient_window) {
client()->OnChangeCompleted(
change_id, AddTransientWindow(ClientWindowId(window),
ClientWindowId(transient_window)));
}
void WindowTree::RemoveTransientWindowFromParent(uint32_t change_id,
Id transient_window_id) {
bool success = false;
ServerWindow* transient_window =
GetWindowByClientId(ClientWindowId(transient_window_id));
if (transient_window && transient_window->transient_parent() &&
access_policy_->CanRemoveTransientWindowFromParent(transient_window)) {
success = true;
Operation op(this, window_server_,
OperationType::REMOVE_TRANSIENT_WINDOW_FROM_PARENT);
transient_window->transient_parent()->RemoveTransientWindow(
transient_window);
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::SetModal(uint32_t change_id, Id window_id) {
client()->OnChangeCompleted(change_id, SetModal(ClientWindowId(window_id)));
}
void WindowTree::ReorderWindow(uint32_t change_id,
Id window_id,
Id relative_window_id,
mojom::OrderDirection direction) {
bool success = false;
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
ServerWindow* relative_window =
GetWindowByClientId(ClientWindowId(relative_window_id));
DVLOG(3) << "reorder client=" << id_ << " client window_id=" << window_id
<< " global window_id="
<< (window ? WindowIdToTransportId(window->id()) : 0)
<< " relative client window_id=" << relative_window_id
<< " relative global window_id="
<< (relative_window ? WindowIdToTransportId(relative_window->id())
: 0);
if (CanReorderWindow(window, relative_window, direction)) {
success = true;
Operation op(this, window_server_, OperationType::REORDER_WINDOW);
window->Reorder(relative_window, direction);
window_server_->ProcessWindowReorder(window, relative_window, direction);
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::GetWindowTree(
Id window_id,
const base::Callback<void(std::vector<mojom::WindowDataPtr>)>& callback) {
std::vector<const ServerWindow*> windows(
GetWindowTree(ClientWindowId(window_id)));
callback.Run(WindowsToWindowDatas(windows));
}
void WindowTree::SetCapture(uint32_t change_id, Id window_id) {
client()->OnChangeCompleted(change_id, SetCapture(ClientWindowId(window_id)));
}
void WindowTree::ReleaseCapture(uint32_t change_id, Id window_id) {
client()->OnChangeCompleted(change_id,
ReleaseCapture(ClientWindowId(window_id)));
}
void WindowTree::StartPointerWatcher(bool want_moves) {
has_pointer_watcher_ = true;
pointer_watcher_want_moves_ = want_moves;
}
void WindowTree::StopPointerWatcher() {
has_pointer_watcher_ = false;
pointer_watcher_want_moves_ = false;
}
void WindowTree::SetWindowBounds(uint32_t change_id,
Id window_id,
const gfx::Rect& bounds) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
if (window && ShouldRouteToWindowManager(window)) {
const uint32_t wm_change_id =
window_server_->GenerateWindowManagerChangeId(this, change_id);
// |window_id| may be a client id, use the id from the window to ensure
// the windowmanager doesn't get an id it doesn't know about.
WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(window);
WindowTree* wm_tree = display_root->window_manager_state()->window_tree();
wm_tree->window_manager_internal_->WmSetBounds(
wm_change_id, wm_tree->ClientWindowIdForWindow(window).id,
std::move(bounds));
return;
}
// Only the owner of the window can change the bounds.
bool success = window && access_policy_->CanSetWindowBounds(window);
if (success) {
Operation op(this, window_server_, OperationType::SET_WINDOW_BOUNDS);
window->SetBounds(bounds);
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::SetWindowVisibility(uint32_t change_id,
Id transport_window_id,
bool visible) {
client()->OnChangeCompleted(
change_id,
SetWindowVisibility(ClientWindowId(transport_window_id), visible));
}
void WindowTree::SetWindowProperty(
uint32_t change_id,
Id transport_window_id,
const std::string& name,
const base::Optional<std::vector<uint8_t>>& value) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
if (window && ShouldRouteToWindowManager(window)) {
const uint32_t wm_change_id =
window_server_->GenerateWindowManagerChangeId(this, change_id);
WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(window);
WindowTree* wm_tree = display_root->window_manager_state()->window_tree();
wm_tree->window_manager_internal_->WmSetProperty(
wm_change_id, wm_tree->ClientWindowIdForWindow(window).id, name, value);
return;
}
const bool success = window && access_policy_->CanSetWindowProperties(window);
if (success) {
Operation op(this, window_server_, OperationType::SET_WINDOW_PROPERTY);
if (!value.has_value()) {
window->SetProperty(name, nullptr);
} else {
window->SetProperty(name, &value.value());
}
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::SetWindowOpacity(uint32_t change_id,
Id window_id,
float opacity) {
client()->OnChangeCompleted(
change_id, SetWindowOpacity(ClientWindowId(window_id), opacity));
}
void WindowTree::AttachCompositorFrameSink(
Id transport_window_id,
mojom::CompositorFrameSinkType type,
cc::mojom::MojoCompositorFrameSinkRequest compositor_frame_sink,
cc::mojom::MojoCompositorFrameSinkClientPtr client) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
const bool success =
window && access_policy_->CanSetWindowCompositorFrameSink(window, type);
if (!success) {
DVLOG(1) << "request to AttachCompositorFrameSink failed";
return;
}
window->CreateCompositorFrameSink(type, gfx::kNullAcceleratedWidget,
std::move(compositor_frame_sink),
std::move(client));
}
void WindowTree::SetWindowTextInputState(Id transport_window_id,
mojo::TextInputStatePtr state) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
bool success = window && access_policy_->CanSetWindowTextInputState(window);
if (success)
window->SetTextInputState(state.To<ui::TextInputState>());
}
void WindowTree::SetImeVisibility(Id transport_window_id,
bool visible,
mojo::TextInputStatePtr state) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
bool success = window && access_policy_->CanSetWindowTextInputState(window);
if (success) {
if (!state.is_null())
window->SetTextInputState(state.To<ui::TextInputState>());
Display* display = GetDisplay(window);
if (display)
display->SetImeVisibility(window, visible);
}
}
void WindowTree::OnWindowInputEventAck(uint32_t event_id,
mojom::EventResult result) {
if (event_ack_id_ == 0 || event_id != event_ack_id_) {
// TODO(sad): Something bad happened. Kill the client?
NOTIMPLEMENTED() << ": Wrong event acked. event_id=" << event_id
<< ", event_ack_id_=" << event_ack_id_;
DVLOG(1) << "OnWindowInputEventAck supplied unexpected event_id";
}
event_ack_id_ = 0;
if (janky_)
event_source_wms_->window_tree()->ClientJankinessChanged(this);
WindowManagerState* event_source_wms = event_source_wms_;
event_source_wms_ = nullptr;
if (event_source_wms)
event_source_wms->OnEventAck(this, result);
if (!event_queue_.empty()) {
DCHECK(!event_ack_id_);
ServerWindow* target = nullptr;
std::unique_ptr<ui::Event> event;
do {
std::unique_ptr<TargetedEvent> targeted_event =
std::move(event_queue_.front());
event_queue_.pop();
target = targeted_event->target();
event = targeted_event->TakeEvent();
} while (!event_queue_.empty() && !GetDisplay(target));
if (target)
DispatchInputEventImpl(target, *event);
}
}
void WindowTree::SetClientArea(Id transport_window_id,
const gfx::Insets& insets,
const base::Optional<std::vector<gfx::Rect>>&
transport_additional_client_areas) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
if (!window || !access_policy_->CanSetClientArea(window))
return;
window->SetClientArea(insets, transport_additional_client_areas.value_or(
std::vector<gfx::Rect>()));
}
void WindowTree::SetHitTestMask(Id transport_window_id,
const base::Optional<gfx::Rect>& mask) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
if (!window || !access_policy_->CanSetHitTestMask(window)) {
DVLOG(1) << "SetHitTestMask failed";
return;
}
if (mask)
window->SetHitTestMask(*mask);
else
window->ClearHitTestMask();
}
void WindowTree::SetCanAcceptDrops(Id window_id, bool accepts_drops) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
if (!window || !access_policy_->CanSetAcceptDrops(window)) {
DVLOG(1) << "SetAcceptsDrops failed";
return;
}
window->SetCanAcceptDrops(accepts_drops);
}
void WindowTree::Embed(Id transport_window_id,
mojom::WindowTreeClientPtr client,
uint32_t flags,
const EmbedCallback& callback) {
callback.Run(
Embed(ClientWindowId(transport_window_id), std::move(client), flags));
}
void WindowTree::SetFocus(uint32_t change_id, Id transport_window_id) {
client()->OnChangeCompleted(change_id,
SetFocus(ClientWindowId(transport_window_id)));
}
void WindowTree::SetCanFocus(Id transport_window_id, bool can_focus) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
// TODO(sky): there should be an else case (it shouldn't route to wm and
// policy allows, then set_can_focus).
if (window && ShouldRouteToWindowManager(window))
window->set_can_focus(can_focus);
}
void WindowTree::SetCanAcceptEvents(Id transport_window_id,
bool can_accept_events) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
// TODO(riajiang): check |event_queue_| is empty for |window|.
if (window && access_policy_->CanSetAcceptEvents(window))
window->set_can_accept_events(can_accept_events);
}
void WindowTree::SetPredefinedCursor(uint32_t change_id,
Id transport_window_id,
ui::mojom::Cursor cursor_id) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
// Only the owner of the window can change the bounds.
bool success = window && access_policy_->CanSetCursorProperties(window);
if (success) {
Operation op(this, window_server_,
OperationType::SET_WINDOW_PREDEFINED_CURSOR);
window->SetPredefinedCursor(cursor_id);
}
client()->OnChangeCompleted(change_id, success);
}
void WindowTree::GetWindowManagerClient(
mojo::AssociatedInterfaceRequest<mojom::WindowManagerClient> internal) {
if (!access_policy_->CanSetWindowManager() || !window_manager_internal_ ||
window_manager_internal_client_binding_) {
return;
}
window_manager_internal_client_binding_.reset(
new mojo::AssociatedBinding<mojom::WindowManagerClient>(
this, std::move(internal)));
}
void WindowTree::GetCursorLocationMemory(
const GetCursorLocationMemoryCallback& callback) {
callback.Run(
window_server_->display_manager()->GetUserDisplayManager(user_id_)->
GetCursorLocationMemory());
}
void WindowTree::PerformDragDrop(
uint32_t change_id,
Id source_window_id,
const std::unordered_map<std::string, std::vector<uint8_t>>& drag_data,
uint32_t drag_operation) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(source_window_id));
bool success = window && access_policy_->CanInitiateDragLoop(window);
if (!success || !ShouldRouteToWindowManager(window)) {
// We need to fail this move loop change, otherwise the client will just be
// waiting for |change_id|.
DVLOG(1) << "PerformDragDrop failed (access denied).";
OnChangeCompleted(change_id, false);
return;
}
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
if (!display_root) {
// The window isn't parented. There's nothing to do.
DVLOG(1) << "PerformDragDrop failed (window unparented).";
OnChangeCompleted(change_id, false);
return;
}
if (window_server_->in_move_loop() || window_server_->in_drag_loop()) {
// Either the window manager is servicing a window drag or we're servicing
// a drag and drop operation. We can't start a second drag.
DVLOG(1) << "PerformDragDrop failed (already performing a drag).";
OnChangeCompleted(change_id, false);
return;
}
// TODO(erg): Dealing with |drag_representation| is hard, so we're going to
// deal with that later.
// Here, we need to dramatically change how the mouse pointer works. Once
// we've started a drag drop operation, cursor events don't go to windows as
// normal.
WindowManagerState* wms = display_root->window_manager_state();
window_server_->StartDragLoop(change_id, window, this);
wms->SetDragDropSourceWindow(
this, window, this, mojo::WrapSTLType(mojo::UnorderedMapToMap(drag_data)),
drag_operation);
}
void WindowTree::CancelDragDrop(Id window_id) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
if (!window) {
DVLOG(1) << "CancelDragDrop failed (no window)";
return;
}
if (window != window_server_->GetCurrentDragLoopWindow()) {
DVLOG(1) << "CancelDragDrop failed (not the drag loop window)";
return;
}
if (window_server_->GetCurrentDragLoopInitiator() != this) {
DVLOG(1) << "CancelDragDrop failed (not the drag initiator)";
return;
}
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
if (!display_root) {
DVLOG(1) << "CancelDragDrop failed (no such window manager display root)";
return;
}
WindowManagerState* wms = display_root->window_manager_state();
wms->CancelDragDrop();
}
void WindowTree::PerformWindowMove(uint32_t change_id,
Id window_id,
ui::mojom::MoveLoopSource source,
const gfx::Point& cursor) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
bool success = window && access_policy_->CanInitiateMoveLoop(window);
if (!success || !ShouldRouteToWindowManager(window)) {
// We need to fail this move loop change, otherwise the client will just be
// waiting for |change_id|.
DVLOG(1) << "PerformWindowMove failed (access denied).";
OnChangeCompleted(change_id, false);
return;
}
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
if (!display_root) {
// The window isn't parented. There's nothing to do.
DVLOG(1) << "PerformWindowMove failed (window unparented).";
OnChangeCompleted(change_id, false);
return;
}
if (window_server_->in_move_loop() || window_server_->in_drag_loop()) {
// Either the window manager is servicing a window drag or we're servicing
// a drag and drop operation. We can't start a second drag.
DVLOG(1) << "PerformWindowMove failed (already performing a drag).";
OnChangeCompleted(change_id, false);
return;
}
// When we perform a window move loop, we give the window manager non client
// capture. Because of how the capture public interface currently works,
// SetCapture() will check whether the mouse cursor is currently in the
// non-client area and if so, will redirect messages to the window
// manager. (And normal window movement relies on this behaviour.)
WindowManagerState* wms = display_root->window_manager_state();
wms->SetCapture(window, wms->window_tree()->id());
const uint32_t wm_change_id =
window_server_->GenerateWindowManagerChangeId(this, change_id);
window_server_->StartMoveLoop(wm_change_id, window, this, window->bounds());
wms->window_tree()->window_manager_internal_->WmPerformMoveLoop(
wm_change_id, wms->window_tree()->ClientWindowIdForWindow(window).id,
source, cursor);
}
void WindowTree::CancelWindowMove(Id window_id) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
bool success = window && access_policy_->CanInitiateMoveLoop(window);
if (!success) {
DVLOG(1) << "CancelWindowMove failed (no window / access denied)";
return;
}
if (window != window_server_->GetCurrentMoveLoopWindow()) {
DVLOG(1) << "CancelWindowMove failed (not the move loop window)";
return;
}
if (window_server_->GetCurrentMoveLoopInitiator() != this) {
DVLOG(1) << "CancelWindowMove failed (not the move loop initiator)";
return;
}
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
if (!display_root) {
DVLOG(1) << "CancelWindowMove failed (no such window manager display root)";
return;
}
WindowManagerState* wms = display_root->window_manager_state();
wms->window_tree()->window_manager_internal_->WmCancelMoveLoop(
window_server_->GetCurrentMoveLoopChangeId());
}
void WindowTree::AddAccelerator(uint32_t id,
mojom::EventMatcherPtr event_matcher,
const AddAcceleratorCallback& callback) {
DCHECK(window_manager_state_);
const bool success =
window_manager_state_->event_dispatcher()->AddAccelerator(
id, std::move(event_matcher));
callback.Run(success);
}
void WindowTree::RemoveAccelerator(uint32_t id) {
window_manager_state_->event_dispatcher()->RemoveAccelerator(id);
}
void WindowTree::AddActivationParent(Id transport_window_id) {
AddActivationParent(ClientWindowId(transport_window_id));
}
void WindowTree::RemoveActivationParent(Id transport_window_id) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
if (window) {
Display* display = GetDisplay(window);
if (display)
display->RemoveActivationParent(window);
else
DVLOG(1) << "RemoveActivationParent window not associated with display";
} else {
DVLOG(1) << "RemoveActivationParent supplied invalid window id";
}
}
void WindowTree::ActivateNextWindow() {
DCHECK(window_manager_state_);
if (window_server_->user_id_tracker()->active_id() != user_id_)
return;
ServerWindow* focused_window = window_server_->GetFocusedWindow();
if (focused_window) {
WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(focused_window);
if (display_root->window_manager_state() != window_manager_state_.get()) {
// We aren't active.
return;
}
display_root->display()->ActivateNextWindow();
return;
}
// Use the first display.
std::set<Display*> displays = window_server_->display_manager()->displays();
if (displays.empty())
return;
(*displays.begin())->ActivateNextWindow();
}
void WindowTree::SetUnderlaySurfaceOffsetAndExtendedHitArea(
Id window_id,
int32_t x_offset,
int32_t y_offset,
const gfx::Insets& hit_area) {
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
if (!window)
return;
window->SetUnderlayOffset(gfx::Vector2d(x_offset, y_offset));
window->set_extended_hit_test_region(hit_area);
}
void WindowTree::WmResponse(uint32_t change_id, bool response) {
if (window_server_->in_move_loop() &&
window_server_->GetCurrentMoveLoopChangeId() == change_id) {
ServerWindow* window = window_server_->GetCurrentMoveLoopWindow();
if (window->id().client_id != id_) {
window_server_->WindowManagerSentBogusMessage();
window = nullptr;
} else {
WindowManagerDisplayRoot* display_root =
GetWindowManagerDisplayRoot(window);
if (display_root) {
WindowManagerState* wms = display_root->window_manager_state();
// Clear the implicit capture.
wms->SetCapture(nullptr, false);
}
}
if (!response && window) {
// Our move loop didn't succeed, which means that we must restore the
// original bounds of the window.
window->SetBounds(window_server_->GetCurrentMoveLoopRevertBounds());
}
window_server_->EndMoveLoop();
}
window_server_->WindowManagerChangeCompleted(change_id, response);
}
void WindowTree::WmRequestClose(Id transport_window_id) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
WindowTree* tree = window_server_->GetTreeWithRoot(window);
if (tree && tree != this) {
tree->client()->RequestClose(tree->ClientWindowIdForWindow(window).id);
}
// TODO(sky): think about what else case means.
}
void WindowTree::WmSetFrameDecorationValues(
mojom::FrameDecorationValuesPtr values) {
DCHECK(window_manager_state_);
window_manager_state_->SetFrameDecorationValues(std::move(values));
}
void WindowTree::WmSetNonClientCursor(uint32_t window_id,
mojom::Cursor cursor_id) {
DCHECK(window_manager_state_);
ServerWindow* window = GetWindowByClientId(ClientWindowId(window_id));
if (window) {
window->SetNonClientCursor(cursor_id);
} else {
DVLOG(1) << "trying to update non-client cursor of invalid window";
}
}
void WindowTree::OnWmCreatedTopLevelWindow(uint32_t change_id,
Id transport_window_id) {
ServerWindow* window =
GetWindowByClientId(ClientWindowId(transport_window_id));
if (window && window->id().client_id != id_) {
DVLOG(1) << "OnWmCreatedTopLevelWindow supplied invalid window id";
window_server_->WindowManagerSentBogusMessage();
window = nullptr;
}
window_server_->WindowManagerCreatedTopLevelWindow(this, change_id, window);
}
void WindowTree::OnAcceleratorAck(uint32_t event_id,
mojom::EventResult result) {
if (event_ack_id_ == 0 || event_id != event_ack_id_) {
DVLOG(1) << "OnAcceleratorAck supplied invalid event_id";
window_server_->WindowManagerSentBogusMessage();
return;
}
event_ack_id_ = 0;
DCHECK(window_manager_state_);
window_manager_state_->OnAcceleratorAck(result);
}
bool WindowTree::HasRootForAccessPolicy(const ServerWindow* window) const {
return HasRoot(window);
}
bool WindowTree::IsWindowKnownForAccessPolicy(
const ServerWindow* window) const {
return IsWindowKnown(window);
}
bool WindowTree::IsWindowRootOfAnotherTreeForAccessPolicy(
const ServerWindow* window) const {
WindowTree* tree = window_server_->GetTreeWithRoot(window);
return tree && tree != this;
}
void WindowTree::OnDragCompleted(bool success, uint32_t action_taken) {
DCHECK(window_server_->in_drag_loop());
if (window_server_->GetCurrentDragLoopInitiator() != this)
return;
uint32_t change_id = window_server_->GetCurrentDragLoopChangeId();
ServerWindow* window = window_server_->GetCurrentDragLoopWindow();
WindowManagerDisplayRoot* display_root = GetWindowManagerDisplayRoot(window);
if (!display_root)
return;
window_server_->EndDragLoop();
WindowManagerState* wms = display_root->window_manager_state();
wms->EndDragDrop();
client()->OnPerformDragDropCompleted(change_id, success, action_taken);
}
ServerWindow* WindowTree::GetWindowById(const WindowId& id) {
return GetWindow(id);
}
DragTargetConnection* WindowTree::GetDragTargetForWindow(
const ServerWindow* window) {
if (!window)
return nullptr;
DragTargetConnection* connection = window_server_->GetTreeWithRoot(window);
if (connection)
return connection;
return window_server_->GetTreeWithId(window->id().client_id);
}
void WindowTree::PerformOnDragDropStart(
mojo::Map<mojo::String, mojo::Array<uint8_t>> mime_data) {
client()->OnDragDropStart(
mojo::MapToUnorderedMap(mojo::UnwrapToSTLType(std::move(mime_data))));
}
void WindowTree::PerformOnDragEnter(
const ServerWindow* window,
uint32_t event_flags,
const gfx::Point& cursor_offset,
uint32_t effect_bitmask,
const base::Callback<void(uint32_t)>& callback) {
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id)) {
NOTREACHED();
callback.Run(0);
return;
}
client()->OnDragEnter(client_window_id.id, event_flags, cursor_offset,
effect_bitmask, callback);
}
void WindowTree::PerformOnDragOver(
const ServerWindow* window,
uint32_t event_flags,
const gfx::Point& cursor_offset,
uint32_t effect_bitmask,
const base::Callback<void(uint32_t)>& callback) {
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id)) {
NOTREACHED();
callback.Run(0);
return;
}
client()->OnDragOver(client_window_id.id, event_flags, cursor_offset,
effect_bitmask, callback);
}
void WindowTree::PerformOnDragLeave(const ServerWindow* window) {
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id)) {
NOTREACHED();
return;
}
client()->OnDragLeave(client_window_id.id);
}
void WindowTree::PerformOnCompleteDrop(
const ServerWindow* window,
uint32_t event_flags,
const gfx::Point& cursor_offset,
uint32_t effect_bitmask,
const base::Callback<void(uint32_t)>& callback) {
ClientWindowId client_window_id;
if (!IsWindowKnown(window, &client_window_id)) {
NOTREACHED();
callback.Run(0);
return;
}
client()->OnCompleteDrop(client_window_id.id, event_flags, cursor_offset,
effect_bitmask, callback);
}
void WindowTree::PerformOnDragDropDone() {
client()->OnDragDropDone();
}
} // namespace ws
} // namespace ui