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Implemented by

 nsIWebBrowserFind

 Searches for text in a web browser.

 Get one by doing a GetInterface on an nsIWebBrowser.

 By default, the implementation will search the focussed frame, or
 if there is no focussed frame, the web browser content area. It
 does not by default search subframes or iframes. To change this
 behaviour, and to explicitly set the frame to search, 
 QueryInterface to nsIWebBrowserFindInFrames.

 @status FROZEN
[scriptable, uuid(2f977d44-5485-11d4-87e2-0010a4e75ef2)]
interface nsIWebBrowserFind : nsISupports

Attributes

 entireWord

 Whether to match entire words only. Default is false.
attribute boolean entireWord 
 findBackwards

 Whether to find backwards (towards the beginning of the document).
 Default is false (search forward).
attribute boolean findBackwards 
 matchCase

 Whether to match case (case sensitive) when searching. Default is false.
attribute boolean matchCase 
 searchFrames

 Whether to search through all frames in the content area. Default is true.
 
 Note that you can control whether the search propagates into child or
 parent frames explicitly using nsIWebBrowserFindInFrames, but if one,
 but not both, of searchSubframes and searchParentFrames are set, this
 returns false.
attribute boolean searchFrames 
 searchString

 The string to search for. This must be non-empty to search.
attribute wstring searchString 
 wrapFind

 Whether the search wraps around to the start (or end) of the document
 if no match was found between the current position and the end (or
 beginning). Works correctly when searching backwards. Default is
 false.
attribute boolean wrapFind

Methods

 findNext

 Finds, highlights, and scrolls into view the next occurrence of the
 search string, using the current search settings. Fails if the
 search string is empty.

 @return  Whether an occurrence was found
boolean findNext()