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How toolbar commands work
When draws a toolbar, the following events occur:
- For each toolbar control item, determines whether the file attribute exists.
- If the file attribute exists, calls canAcceptCommand() to determine whether it should enable the control in the current context of the document.
For the Document Title text box in the toolbar, for example, canAcceptCommand() checks to see if there is a current DOM and if the current document is an HTML file. If both these conditions are true, the function returns true and enables the text box on the toolbar.
- If the file attribute exists, ignores the following attributes, if they are specified: checked , command , DOMRequired , enabled , script , showif , update , and value .
- If the file attribute does not exist, processes the attributes that are set for the toolbar control item: checked , command , DomRequired , and so on.
For more information on specific item tag attributes, see Item Tag Attributes .
- calls the getCurrentValue() function on every update cycle, as specified by the update attribute, to determine what value to display for the control.
- The user selects an item on the toolbar.
- calls the receiveArguments() function to process any arguments that are specified by the arguments attribute of the toolbar item.
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