1.12.4 BLOX.BDropDown: list box accessing

add: anObject afterIndex: index

Add an element with the given value after another element whose index is contained in the index parameter. The label displayed in the widget is anObject’s displayString. Answer anObject.

add: aString element: anObject afterIndex: index

Add an element with the aString label after another element whose index is contained in the index parameter. This method allows the client to decide autonomously the label that the widget will display.

If anObject is nil, then string is used as the element as well. If aString is nil, then the element’s displayString is used as the label.

Answer anObject or, if it is nil, aString.

addLast: anObject

Add an element with the given value at the end of the listbox. The label displayed in the widget is anObject’s displayString. Answer anObject.

addLast: aString element: anObject

Add an element with the given value at the end of the listbox. This method allows the client to decide autonomously the label that the widget will display.

If anObject is nil, then string is used as the element as well. If aString is nil, then the element’s displayString is used as the label.

Answer anObject or, if it is nil, aString.

associationAt: anIndex

Answer an association whose key is the item at the given position in the listbox and whose value is the label used to display that item.

at: anIndex

Answer the element displayed at the given position in the list box.

contents: stringCollection

Set the elements displayed in the listbox, and set the labels to be their displayStrings.

contents: stringCollection elements: elementList

Set the elements displayed in the listbox to be those in elementList, and set the labels to be the corresponding elements in stringCollection. The two collections must have the same size.

do: aBlock

Iterate over each element of the listbox and pass it to aBlock.

elements: elementList

Set the elements displayed in the listbox, and set the labels to be their displayStrings.

index: newIndex

Highlight the item at the given position in the listbox, and transfer the text in the list box to the text widget.

labelAt: anIndex

Answer the label displayed at the given position in the list box.

labelsDo: aBlock

Iterate over the labels in the list widget and pass each of them to aBlock.

numberOfStrings

Answer the number of items in the list box

removeAtIndex: index

Remove the item at the given index in the list box, answering the object associated to the element (i.e. the value that #at: would have returned for the given index)

size

Answer the number of items in the list box