harmony 鸿蒙Search

  • 2022-08-09
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Search

The <Search> component provides an area for users to enter search queries.

NOTE

This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

Not supported

APIs

Search(options?: { value?: string, placeholder?: ResourceStr, icon?: string, controller?: SearchController })

Parameters

Name Type Mandatory Description
value string No Text input in the search text box.
Since API version 10, this parameter supports two-way binding through $$.
placeholder ResourceStr10+ No Text displayed when there is no input.
icon string No Path to the search icon. By default, the system search icon is used.
NOTE
The icon data source can be a local or online image.
- The supported formats include PNG, JPG, BMP, SVG, GIF, and pixelmap.
- The Base64 string is supported in the following format: data:image/[png|jpeg|bmp|webp];base64,[base64 data], where [base64 data] is a Base64 string.
If this attribute and the searchIcon attribute are both set, the searchIcon attribute takes precedence.
controller SearchController No Controller of the <Search> component.

Attributes

In addition to the universal attributes, the following attributes are supported.

Name Type Description
searchButton10+ value: string,
option?: SearchButtonOptions
Text on the search button located next to the search text box. By default, there is no search button.
placeholderColor ResourceColor Placeholder text color.
Default value: ’#99182431’
placeholderFont Font Placeholder text style, including the font size, font width, font family, and font style. Currently, only the default font family is supported.
textFont Font Style of the text entered in the search box, including the font size, font width, font family, and font style. Currently, only the default font family is supported.
textAlign TextAlign Text alignment mode in the search text box. Currently, the following alignment modes are supported: Start, Center, and End.
Default value: TextAlign.Start
copyOption9+ CopyOptions Whether copy and paste is allowed.
Default value: CopyOptions.LocalDevice
If this attribute is set to CopyOptions.None, the text can be pasted, but copy or cut is not allowed.
searchIcon10+ IconOptions Style of the search icon on the left.
cancelButton10+ {
style? : CancelButtonStyle
icon?: IconOptions
}
Style of the Cancel button on the right.
Default value:
{
style: CancelButtonStyle.INPUT
}
fontColor10+ ResourceColor Font color of the input text.
Default value: ’#FF182431’
NOTE
Universal text attributes fontSize, fontStyle, fontWeight, and fontFamily are set in the textFont attribute.
caretStyle10+ CaretStyle Caret style.
Default value:
{
width: 1.5vp
color: ‘#007DFF’
}
enableKeyboardOnFocus10+ boolean Whether to enable the input method when the component obtains focus.
Default value: true
selectionMenuHidden10+ boolean Whether to display the text selection menu when the text box is long-pressed or right-clicked.
Default value: false
customKeyboard10+ CustomBuilder Custom keyboard.
NOTE
When a custom keyboard is set, activating the text box opens the specified custom component, instead of the system input method.
The custom keyboard’s height can be set through the height attribute of the custom component’s root node, and its width is fixed at the default value.
The custom keyboard is displayed on top of the current page, without compressing or raising the page.
The custom keyboard cannot obtain the focus, but it blocks gesture events.
By default, the custom keyboard is closed when the input component loses the focus. You can also use the stopEditing API to close the keyboard.

IconOptions10+

Name Type Mandatory Description
size Length No Icon size. It cannot be set in percentage.
color ResourceColor No Icon color.
src ResourceStr No Image source of the icon.

CaretStyle10+

Name Type Mandatory Description
width Length No Caret size. It cannot be set in percentage.
color ResourceColor No Caret color.

SearchButtonOptions10+

Name Type Mandatory Description
fontSize Length No Font size of the button. It cannot be set in percentage.
fontColor ResourceColor No Font color of the button.

CancelButtonStyle10+

Name Description
CONSTANT The Cancel button is always displayed.
INVISIBLE The Cancel button is always hidden.
INPUT The Cancel button is displayed when there is text input.

Events

In addition to the universal events, the following events are supported.

Name Description
onSubmit(callback: (value: string) => void) Triggered when users click the search icon or the search button, or touch the search button on a soft keyboard.
- value: current text input.
onChange(callback: (value: string) => void) Triggered when the input in the text box changes.
- value: current text input.
onCopy(callback: (value: string) => void) Triggered when data is copied to the pasteboard, which is displayed when the search text box is long pressed.
- value: text copied.
onCut(callback: (value: string) => void) Triggered when data is cut from the pasteboard, which is displayed when the search text box is long pressed.
- value: text cut.
onPaste(callback: (value: string) => void) Triggered when data is pasted from the pasteboard, which is displayed when the search text box is long pressed.
-value: text pasted.
onTextSelectionChange(callback: (selectionStart: number, selectionEnd: number) => void)10+ Triggered when the text selection position changes.
selectionStart: start position of the text selection area. The start position of text in the text box is 0.
selectionEnd: end position of the text selection area.
onContentScroll(callback: (totalOffsetX: number, totalOffsetY: number) => void)10+ Triggered when the text content is scrolled.
totalOffsetX: X coordinate offset of the text in the content area.
totalOffsetY: Y coordinate offset of the text in the content area.

SearchController

Implements the controller of the <Search> component. Currently, the controller can be used to control the caret position.

Objects to Import

controller: SearchController = new SearchController()

caretPosition

caretPosition(value: number): void

Sets the position of the caret.

Parameters

Name Type Mandatory Description
value number Yes Length from the start of the character string to the position where the caret is located.

stopEditing10+

stopEditing(): void

Exits the editing state.

getTextContentRect10+

getTextContentRect(): RectResult

Obtains the position of the edited text area relative to the component and its size. The unit of the return value is pixel.

Return value

Type Description
RectResult Position of the edited text area relative to the component and its size.

NOTE

  • The returned position information is the offset of the first character relative to the search icon in the <Search> component.
  • If no text is entered, the return value contains the position information, but the size is 0.

RectResult10+

Describes the position and size.

Parameter Type Description
x number X coordinate.
y number Y coordinate.
width number Content width.
height number Content height.

getTextContentLineCount10+

getTextContentLineCount(): number

Obtains the number of lines of the edited text.

Return value

Type Description
number Number of lines of the edited text.

Example

Example 1

// xxx.ets
@Entry
@Component
struct SearchExample {
  @State changeValue: string = ''
  @State submitValue: string = ''
  controller: SearchController = new SearchController()

  build() {
    Column() {
      Text('onSubmit:' + this.submitValue).fontSize(18).margin(15)
      Text('onChange:' + this.changeValue).fontSize(18).margin(15)
      Search({ value: this.changeValue, placeholder: 'Type to search...', controller: this.controller })
        .searchButton('SEARCH')
        .width('95%')
        .height(40)
        .backgroundColor('#F5F5F5')
        .placeholderColor(Color.Grey)
        .placeholderFont({ size: 14, weight: 400 })
        .textFont({ size: 14, weight: 400 })
        .onSubmit((value: string) => {
          this.submitValue = value
        })
        .onChange((value: string) => {
          this.changeValue = value
        })
        .margin(20)
      Button('Set caretPosition 1')
        .onClick(() => {
          // Move the caret to after the first entered character.
          this.controller.caretPosition(1)
        })
    }.width('100%')
  }
}

search

Example 2

// xxx.ets
@Entry
@Component
struct SearchButtoonExample {
  @State submitValue: string = ''

  build() {
    Column() {
      Text('onSubmit:' + this.submitValue).fontSize(18).margin(15)
      Search({ placeholder: 'Type to search...' })
        .searchButton('SEARCH')
        .searchIcon({
          src: $r('app.media.search')
        })
        .cancelButton({
          style: CancelButtonStyle.CONSTANT,
          icon: {
            src: $r('app.media.cancel')
          }
        })
        .width('90%')
        .height(40)
        .backgroundColor('#F5F5F5')
        .placeholderColor(Color.Grey)
        .placeholderFont({ size: 14, weight: 400 })
        .textFont({ size: 14, weight: 400 })
        .onSubmit((value: string) => {
          this.submitValue = value
        })
        .margin(20)
    }.width('100%')
  }
}

searchButton

Example 3

”`ts // xxx.ets @Entry @Component struct SearchExample { controller: SearchController = new SearchController() @State inputValue: string = “”

// Create a custom keyboard component. @Builder CustomKeyboardBuilder() { Column() { Button(‘x’).onClick(() => { // Disable the custom keyboard. this.controller.stopEditing() }) Grid() { ForEach([1, 2, 3, 4, 5, 6, 7, 8, 9, ‘*’, 0, ‘#’], (item: number|string) => { GridItem() { Button(item + “”) .width(110).onClick(() => { this.inputValue += item }) } }) }.maxCount(3).columnsGap(10).rowsGap(10).padding(5) }.backgroundColor(Color.Gray) }

build() { Column() { Search({ controller: this.controller, value: this.inputValue}) // Bind the custom keyboard. .customKeyboard(this.CustomKeyboardBuilder()).margin(10).border({ width: 1 }) } } } “”

customKeyboard

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