1 /*
2  * Copyright (c) 2021 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_PICKER_PICKER_VALUE_ELEMENT_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_PICKER_PICKER_VALUE_ELEMENT_H
18 
19 #include "core/components/box/render_box.h"
20 #include "core/components/picker/render_picker_value.h"
21 #include "core/pipeline/base/sole_child_element.h"
22 
23 namespace OHOS::Ace {
24 
25 class PickerValueElement : public SoleChildElement, public FocusNode {
26     DECLARE_ACE_TYPE(PickerValueElement, SoleChildElement, FocusNode);
27 
28 public:
PerformBuild()29     void PerformBuild() override
30     {
31         SetFocusable(true);
32         SoleChildElement::PerformBuild();
33         HandleSelfFocus();
34     }
35 
Update()36     void Update() override
37     {
38         customComponent_ = component_;
39         SoleChildElement::Update();
40     }
41 
CanUpdate(const RefPtr<Component> & newComponent)42     bool CanUpdate(const RefPtr<Component>& newComponent) override
43     {
44         return (newComponent == customComponent_) && Element::CanUpdate(newComponent);
45     }
46 
47 protected:
48     void OnClick() override;
49 
OnFocus()50     void OnFocus() override
51     {
52         HandleSelfFocus(true);
53     }
54 
OnBlur()55     void OnBlur() override
56     {
57         HandleSelfFocus(false);
58     }
59 
60 private:
61     RefPtr<RenderBox> GetRenderBox() const;
62 
63     void HandleSelfFocus(bool focus);
64 
65     void HandleSelfFocus();
66 
67     WeakPtr<Component> customComponent_;
68 };
69 
70 } // namespace OHOS::Ace
71 
72 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_PICKER_PICKER_VALUE_ELEMENT_H
73