The <menu> component provides menus as temporary pop-up windows to display operations that can be performed by users.
Required Permissions
None
Child Components
<option>
Attributes
In addition to the attributes in Universal Attributes, the following attributes are supported.
Name
|
Type
|
Default Value
|
Mandatory
|
Description
|
target
|
string
|
-
|
No
|
Target element selector. After the target element selector is used, a menu is automatically displayed when you click the target element. The pop-up menu is preferentially displayed in the lower right corner of the target element. When the visible space on the right is insufficient, the menu is moved leftward. When the visible space in the lower part is insufficient, the menu is moved upward.
|
type
|
string
|
click
|
No
|
Mode in which the target element triggers the pop-up window. Available values are as follows:
- click: Click the element to trigger the pop-up window.
- longpress: Press and hold the element to trigger the pop-up window.
|
title
|
string
|
-
|
No
|
Title of the pop-up window.
|
NOTE:
The focusable and disabled attributes are not supported.
Styles
Only the following style attributes are supported.
Name
|
Type
|
Default Value
|
Mandatory
|
Description
|
text-color
|
<color>
|
-
|
No
|
Font color of the menu.
|
font-size
|
<length>
|
30px
|
No
|
Font size of the menu.
|
allow-scale
|
boolean
|
true
|
No
|
Whether the font size changes with the system's font size settings.
NOTE: If the config-changes tag of fontSize is configured for abilities in the config.json file, the setting takes effect without application restart.
|
letter-spacing
|
<length>
|
0
|
No
|
Character spacing of the menu.
|
font-style
|
string
|
normal
|
No
|
Font style of the menu. For details, see font-style of the text component.
|
font-weight
|
number | string
|
normal
|
No
|
Font weight of the menu. For details, see font-weight of the text component.
|
font-family
|
string
|
sans-serif
|
No
|
Font family, in which fonts are separated by commas (,). Each font is set using a font name or font family name. The first font that exists in the system or the font specified by Custom Font Styles in the family is selected as the font for the text.
|
Events
The following events are supported.
Name
|
Parameter
|
Description
|
selected
|
{ value:value }
|
Triggered when a value in the menu is selected. The returned value is the value attribute of the <option> component.
|
cancel
|
-
|
Triggered when an operation is canceled by the user
|
Methods
The following methods are supported.
Name
|
Parameter
|
Description
|
show
|
{ x:x, y:y }
|
Displays the menu. x and y specify the position of the displayed menu. x indicates the X-axis coordinate from the left edge of the visible area, and does not include any scrolling offset. y indicates the Y-axis coordinate from the upper edge of the visible area, and does not include any scrolling offset or a status bar. The menu is preferentially displayed in the lower right corner. When the visible space on the right is insufficient, the menu is moved leftward. When the visible space in the lower part is insufficient, the menu is moved upward.
|
Example
<div class="container">
<text onclick="onTextClick" class="title-text">Show popup menu.</text>
<menu id="apiMenu" onselected="onMenuSelected">
<option value="Item 1">Item 1</option>
<option value="Item 2">Item 2</option>
<option value="Item 3">Item 3</option>
</menu>
</div>
.container {
flex-direction: column;
align-items: flex-start;
justify-content: center;
}
.title-text {
margin: 20px;
}
import prompt from '@system.prompt';
export default {
onMenuSelected(e) {
prompt.showToast({
message: e.value
})
},
onTextClick() {
this.$element("apiMenu").show({x:280,y:120});
}
}
![](figures/menu13.gif)