CwTreeView CwTreeView displays a hierarchical list of items. Protocol Protocols can be divided into several groups: • pertaining to creation • pertaining to the tree view • pertaining to a node contained in the tree. Those tabs are instances of CwTreeNode. Creation createTreeNode: theName argBlock: argBlock add a CwTreeNode as a child of the receiver. Tree View deleteAllItems Delete all the nodes from the receiver and release all OS resources associated with the nodes . deleteItem: anItem Delete the node from the receiver and release all OS resources associated with the item. deleteItems: anOrderedCollection Delete the specified items from the receiver and release all OS resources associated deselectAllItems Unhighlight and remove all nodes from the selected items list of the receiver. indentation Answer the amount each node is indented. indentation: anInteger Set the amount each node is indented. roots Answer the roots of the receiver. selectedItems Answer a list of the selected items in the receiver. showImages Answer whether images are displayed in addition to labels. showImages: aBoolean Set whether images are displayed in addition to labels. showItem: anItem Set whether a node is visible in the receiver. showLines: aBoolean Set whether to display lines between the nodes. showPlusMinus: aBoolean Set whether to display the plus/minus icons in addition to the labels of the nodes. showRootLines: aBoolean Set whether to display lines between the roots. visibleItemCount: anInteger Set how many nodes can fit in the visible space of the receiver. Nodes Answer the image displayed by the receiver. image: aCgPixmap Set the image displayed by the receiver. index: anInteger Set the position of the receiver relative to its parent node. items Answer the root nodes in the receiver. numItems Answer the number of root nodes in the receiver. parentNode Answer the parent nodes of the receiver. parentNode: aTreeNode Set the parent nodes of the receiver. root Answer the root node of the receiver. selectedImage Answer the image that is displayed when the receiver is selected. selectedImage: aPixmap Set the image that is displayed when the receiver is selected. showPlusMinus Answer whether the receiver displays plus/minus to indicate it has children. showPlusMinus: aBoolean Set whether the receiver displays plus/minus to indicate it has children. Callbacks and Events The progress bar has no callbacks or events specific to it. collapse executes when a default action happens on an expanded node. the call data object is CwValueCallbackData expand executes when a default action happens on an expanded node. the call data object is CwValueCallbackData singleSelect executed when a node is clicked. The call data object is CwAnyCallbackData. Example | treeView motherNode images icon selectedIcon | "Create the tree." treeView := CwTreeView createWidget: 'TreeView' parent: shell argBlock: nil. treeView manageChild. "Create icons to be used in the nodes of the tree." images := (CgIcon fromResources: #(107 106) fileName: 'cgwtres.dll'). icon := images at: 1. selectedIcon := images at: 2. "Create a root mother node with two daughters." motherNode := treeView createTreeNode: 'Mother' argBlock: [:w | w labelString: 'Mother'; image: icon; selectedImage: selectedIcon]. treeView createTreeNode: 'Daughter1' argBlock: [:w | w labelString: 'Daughter1'; image: icon; selectedImage: selectedIcon; parentNode: motherNode]. treeView createTreeNode: 'Daughter2' argBlock: [:w | w labelString: 'Daughter2'; image: icon; selectedImage: selectedIcon; parentNode: motherNode].
