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_COMMON_IME_TEXT_EDIT_CONTROLLER_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMMON_IME_TEXT_EDIT_CONTROLLER_H
18 
19 #include <string>
20 
21 #include "base/utils/value_change_notifier.h"
22 #include "core/common/ime/text_editing_value.h"
23 
24 namespace OHOS::Ace {
25 
26 class TextEditController : public ValueChangeNotifier<TextEditingValue> {
27 public:
28     void SetText(const std::string& newText, bool needFireChangeEvent = true)
29     {
30         auto value = GetValue();
31         if (value.text != newText) {
32             value.text = newText;
33             // Default set selection to the end of text is more consistent with the intuition of user.
34             value.selection.Update(static_cast<int32_t>(value.GetWideText().length()));
35             SetValue(std::move(value), needFireChangeEvent);
36         }
37     }
38 
SetHint(const std::string & hint)39     void SetHint(const std::string& hint)
40     {
41         auto value = GetValue();
42         value.hint = hint;
43         SetValue(std::move(value));
44     }
45 
SetSelection(const TextSelection & selection)46     void SetSelection(const TextSelection& selection)
47     {
48         auto value = GetValue();
49         value.selection = selection;
50         SetValue(std::move(value));
51     }
52 
Clear()53     void Clear()
54     {
55         SetValue(TextEditingValue());
56     }
57 
GetText()58     const std::string& GetText() const
59     {
60         return GetValue().text;
61     }
62 
GetSelection()63     const TextSelection& GetSelection() const
64     {
65         return GetValue().selection;
66     }
67 };
68 
69 } // namespace OHOS::Ace
70 
71 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMMON_IME_TEXT_EDIT_CONTROLLER_H
72