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Accessibility/TextAttributes: Difference between revisions
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Accessibility/TextAttributes (view source)
Revision as of 16:29, 27 November 2007
, 27 November 2007→Events
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= Events = | = Events = | ||
When a certain text attribute is changed then 'EVENT_TEXT_ATTRIBUTE_CHANGED' | When a certain text attribute is changed then the internal event 'EVENT_TEXT_ATTRIBUTE_CHANGED' should be fired. | ||
In IA2, there is no data to specify what attribute changed, and for what offsets. Therefore, the AT must cache attributes of any objects that it will want to know about text attribute changes for. For example, it can cache the the text attribute ranges for the current text accessible, and compare the previous text attribute runs with the current text attribute runs. | In IA2, there is no data to specify what attribute changed, and for what offsets. Therefore, the AT must cache attributes of any objects that it will want to know about text attribute changes for. For example, it can cache the the text attribute ranges for the current text accessible, and compare the previous text attribute runs with the current text attribute runs. | ||