Perspective - Menu Tree
Component Palette Icon:
Description​
The Menu Tree component can be configured to allow users to navigate pages in a Perspective Session. The Menu Tree defines a hierarchical view of information that can be configured to expand submenu branches and menu items. The subitems can be further expanded to expose more subitems if any exist, and collapsed to hide subitems.
Each menu item has its own path, for example, "Western Region/CA/San Jose" that determines its location in the Menu Tree. The Separation Character property (by default its forward-slash), dictates how the paths are broken up.
Properties​
Most Properties have binding options. For more information on Bindings, see Types of Bindings in Perspective. This section only documents the Props Category of properties. The other Categories are described on the Perspective Component Properties page.
| Name | Description | Property Type |
|---|---|---|
| items | Configure items representing nodes in a subtree from this option. If defined, a submenu will branch from here with these options. Click to see the items properties. | array |
| layoutAlignment | Specifies which side of the root menu is aligned to. Submenu slides in from the opposite side. | value: boolean |
| enabled | If true, this component is currently enabled to perform its actions. | value: boolean |
| itemStyle | Sets style options for the menu tree component. You can also specify a style class. | object |
| headerStyle | Sets style options for the menu tree component. You can also specify a style class. | object |
| backActionStyle | Sets style options for the menu tree component. You can also specify a style class. | object |
| backActionText | Text to display in prompt to go back to the root menu. You can also specify a style class. | value: string |
| style | Sets a style for this component. Full menu of style options is available for text, background, margin and padding, border, shape and miscellaneous. You can also specify a style class. | object |
items Properties​
| Name | Description | Property Type |
|---|---|---|
| target | A url (external), or mounted path to a page. If "items" is empty (no subtree to this item), this will navigate to that location. | value: string |
| items | Configure items representing nodes in a subtree from this option. If defined, a submenu will branch from here with these options. | array |
| navIcon | Icon image appended to the right of the menu item.
| object |
| label | Menu item label.
| object |
| visible | Whether this option should be displayed in the menu tree. | value: boolean |
| enabled | If true, this option is currently enabled to perform its action or render its submenu. | value: boolean |
| showHeader | Whether to display this option's text as a header/title for its submenu. | value: boolean |
| style | Sets a style for this item. Full menu of style options is available for text, background, margin and padding, border, shape and miscellaneous. You can also specify a style class. | object |
| resetOnClick | When true, clicking on the item will cause the Menu Tree to reset back to its root level. Useful in cases where you want to provide your users with a quick way to return to the start of the menus. | value: boolean |
| backActionText | Text to display in prompt to go back to the previous menu. This configuration property will override the text set to display in the root backActionText property. If left blank, menu items default to the root backActionText. | Â value: string |
Scripting​
See the Perspective - Menu Tree Scripting page for the full list of scripting functions available for this component.
Examples​
Example 1 - Basic Menu Tree​
You can use links to go to URL links outside your project or internal to your project. For this example assume you have some screens defined in the project page configuration (home gear). Assume the URL's for those are as follows:
- /screen_1
- /screen_2
- /screen_3
- /screen_b
- /screen_a1
- /screen_a2
Images on the left side of the Menu Tree are associated with the label.icon.path Images on the right side of the Menu Tree are associated with the navIcon.path target property is the link to the screen to navigate to.
Top Level Properties
| Property | Value |
|---|---|
| props.items.0.navIcon.path | material/trending_flat |
| props.items.0.navIcon.color | #6C6C6C |
| props.items.0.label.text | Menu Numbers |
| props.items.0.label.icon.path | material/list |
| props.items.0.label.showHeader | false |
| props.items.1.navIcon.path | material/trending_flat |
| props.items.1.navIcon.color | #008000 |
| props.items.1.label.text | Menu Letters |
| props.items.1.label.icon.path | material/settings |
| props.items.1.label.showHeader | true |
| props.items.2.navIcon.path | material/stop |
| props.items.2.navIcon.color | #FF8A8A |
| props.items.2.label.text | No Target Link |
| props.items.2.label.icon.path | material/stop_screen_sharing |
| props.items.2.label.showHeader | true |
Sub Level Properties of Item 0
| Property | Value |
|---|---|
| props.items.0.items.0.target | /screen_1 |
| props.items.0.items.0.navIcon.path | material/cloud |
| props.items.0.items.0.navIcon.color | #00D9D9 |
| props.items.0.items.0.label.text | Item 1 |
| props.items.0.items.0.label.icon.path | material/chat |
| props.items.0.items.0.label.showHeader | true |
| props.items.0.items.1.target | /screen_2 |
| props.items.0.items.1.navIcon.path | material/cloud_queue |
| props.items.0.items.1.label.text | Item 2 |
| props.items.0.items.1.label.showHeader | true |
| props.items.0.items.2.target | /screen_3 |
| props.items.0.items.2.navIcon.path | material/cloud_circle |
| props.items.0.items.2.label.text | Item 3 |
| props.items.0.items.2.label.showHeader | true |
Sublevel Properties of Item 1
| Property | Value |
|---|---|
| props.items.1.items.0.navIcon.path | material/trending_flat |
| props.items.1.items.0.label.text | Sub Menu A |
| props.items.0.items.0.label.showHeader | true |
| props.items.1.items.1.target | /screen_b |
| props.items.1.items.1.navIcon.path | material/data_usage |
| props.items.1.items.1.label.text | Item B |
| props.items.1.items.0.items.0.target | /screen_a1 |
| props.items.1.items.0.items.0.navIcon.path | material/group |
| props.items.1.items.0.items.0.navIcon.color | #6C6C6C |
| props.items.1.items.0.items.0.label.text | Item A 1 |
| props.items.1.items.0.items.0.label.showHeader | true |
| props.items.1.items.0.items.1.target | /screen_a2 |
| props.items.1.items.0.items.1.navIcon.path | material/group_add |
| props.items.1.items.0.items.1.navIcon.color | #6C6C6C |
| props.items.1.items.0.items.1.label.text | Item A 2 |
| props.items.1.items.0.items.1.label.showHeader | true |
Example 2 - Tree Navigation​
The items property for this component is complex. It is an "object" type that has as many levels as you want. Here is an example of the JSON used to create the two level image above. You can copy the text below and paste it into the items property of your Menu Tree component. No code is needed to make this component navigate.
This example assumes several things in order to work:
- Target fields that are blank (HMI and Administration) do not navigate when clicked.
- There are several pages created in the project:
- /overview
- /lines
- /packaging
- /userPermissions
- /userEdit
- There are icons stored in ignition.
- A hamburger menu icon with a path of "menu_list"
- A greater than symbol with a path of "chevron_right"
[
{
"target": "",
"items": [
{
"target": "/overview",
"items": [],
"navIcon": {
"path": ""
},
"label": {
"text": "Overview",
"icon": {
"path": ""
}
},
"showHeader": true
},
{
"target": "/lines",
"items": [],
"navIcon": {
"path": ""
},
"label": {
"text": "Lines",
"icon": {
"path": ""
}
},
"showHeader": true
},
{
"target": "/packaging",
"items": [],
"navIcon": {
"path": "Packaging"
},
"label": {
"text": "Repeater",
"icon": {
"path": ""
}
},
"showHeader": true
}
],
"navIcon": {
"path": "chevron_right",
"color": "#6C6C6C"
},
"label": {
"text": "HMI",
"icon": {
"path": "menu_list"
}
},
"showHeader": true
},
{
"target": "",
"items": [
{
"target": "/userPermissions",
"items": [],
"navIcon": {
"path": ""
},
"label": {
"text": "Edit Permissions",
"icon": {
"path": ""
}
},
"showHeader": true
},
{
"target": "/userEdit",
"items": [],
"navIcon": {
"path": ""
},
"label": {
"text": "Edit Users",
"icon": {
"path": ""
}
},
"showHeader": true
}
],
"navIcon": {
"path": "chevron_right",
"color": "#6C6C6C"
},
"label": {
"text": "Administration",
"icon": {
"path": "menu_list"
}
},
"showHeader": true
}
]