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// Copyright 2015 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.
#ifndef SERVICES_UI_WS_OPERATION_H_
#define SERVICES_UI_WS_OPERATION_H_
#include <set>
#include "base/macros.h"
#include "services/ui/common/types.h"
namespace ui {
namespace ws {
class WindowServer;
class WindowTree;
enum class OperationType {
NONE,
ADD_TRANSIENT_WINDOW,
ADD_WINDOW,
DELETE_WINDOW,
EMBED,
RELEASE_CAPTURE,
REMOVE_TRANSIENT_WINDOW_FROM_PARENT,
REMOVE_WINDOW_FROM_PARENT,
REORDER_WINDOW,
SET_CAPTURE,
SET_FOCUS,
SET_WINDOW_BOUNDS,
SET_WINDOW_OPACITY,
SET_WINDOW_PREDEFINED_CURSOR,
SET_WINDOW_PROPERTY,
SET_WINDOW_VISIBILITY,
};
// This class tracks the currently pending client-initiated operation.
// This is typically used to suppress superfluous notifications generated
// by suboperations in the window server.
class Operation {
public:
Operation(WindowTree* tree,
WindowServer* window_server,
OperationType operation_type);
~Operation();
ClientSpecificId source_tree_id() const { return source_tree_id_; }
const OperationType& type() const { return operation_type_; }
// Marks the tree with the specified id as having been sent a message
// during the course of |this| operation.
void MarkTreeAsMessaged(ClientSpecificId tree_id) {
message_ids_.insert(tree_id);
}
// Returns true if MarkTreeAsMessaged(tree_id) was invoked.
bool DidMessageTree(ClientSpecificId tree_id) const {
return message_ids_.count(tree_id) > 0;
}
private:
WindowServer* const window_server_;
const ClientSpecificId source_tree_id_;
const OperationType operation_type_;
// See description of MarkTreeAsMessaged/DidMessageTree.
std::set<ClientSpecificId> message_ids_;
DISALLOW_COPY_AND_ASSIGN(Operation);
};
} // namespace ws
} // namespace ui
#endif // SERVICES_UI_WS_OPERATION_H_