1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_IF_ELSE_NODE_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_IF_ELSE_NODE_H
18 
19 #include <cstdint>
20 
21 #include "base/utils/macros.h"
22 #include "core/components_ng/base/ui_node.h"
23 #include "core/components_v2/inspector/inspector_constants.h"
24 
25 namespace OHOS::Ace::NG {
26 
27 class ACE_EXPORT IfElseNode : public UINode {
28     DECLARE_ACE_TYPE(IfElseNode, UINode);
29 
30 public:
31     static RefPtr<IfElseNode> GetOrCreateIfElseNode(int32_t nodeId);
32 
IfElseNode(int32_t nodeId)33     explicit IfElseNode(int32_t nodeId) : UINode(V2::JS_IF_ELSE_ETS_TAG, nodeId) {}
34     ~IfElseNode() override = default;
35 
IsAtomicNode()36     bool IsAtomicNode() const override
37     {
38         return false;
39     }
40 
41     void SetBranchId(int32_t value, std::list<int32_t>& removedElmtId);
42 
GetBranchId()43     int32_t GetBranchId() const
44     {
45         return branchId_;
46     }
47 
48     void FlushUpdateAndMarkDirty() override;
49 
50     bool TryRetake(const std::string& id);
51 
52 private:
53 
54     // uniquely identifies branches within if elseif else construct:
55     // if() { branch } else if () { branch } else { branch}
56     // -1 means uninitialized, before first rerender
57     int32_t branchId_ = -1;
58 
59     // set by CompareBranchId
60     // unset by FlushUpdateAndMarkDirty
61     bool branchIdChanged_ = false;
62 
63     ACE_DISALLOW_COPY_AND_MOVE(IfElseNode);
64 };
65 
66 } // namespace OHOS::Ace::NG
67 
68 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_IF_ELSE_NODE_H
69