36 lines
1.2 KiB
Markdown
36 lines
1.2 KiB
Markdown
## isExpanded
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### Description
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The `isExpanded` method returns the current expanded state of a specified node within a Treeview object. If a node is expanded, its children nodes are displayed. If a node is collapsed, its children nodes are hidden.
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### Returns
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1. `boolean` The expanded state of the node (true for expanded, false for collapsed)
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### Usage
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* Creates a Treeview, adds a child node to the root node, and checks if the root node is expanded:
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```lua
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local basalt = require("basalt")
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local mainFrame = basalt.createFrame()
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local treeview = mainFrame:addTreeview()
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local rootNode = treeview:getRoot()
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local childNode = rootNode.addChild("Child Node")
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rootNode.setExpanded(true)
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if rootNode.isExpanded() then
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basalt.debug("The root node is expanded.")
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else
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basalt.debug("The root node is not expanded.")
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end
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basalt.autoUpdate()
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```
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In this example, a Treeview object is created and added to the mainFrame. The `getRoot` method is used to access the root node, and a new child node is added to it using the `addChild` method. The `setExpanded` method is then used to set the expanded state of the root node to true. The `isExpanded` method is used to check if the root node is expanded and display the result using `basalt.debug`.
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