nsISelection3 编辑

content/base/public/nsISelection3.idlScriptable Please add a summary to this article. 1.0 66 Introduced Gecko 2.0 Obsolete Gecko 8.0 Inherits from: nsISupports Last changed in Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1)

In Gecko 8.0 this Interface was merged into the nsISelection interface.

Method overview

void modify(in DOMString alter, in DOMString direction, in DOMString granularity);

Methods

modify()

Modifies the selection. Note that the parameters are case-insensitive.

void modify(
  in DOMString alter,
  in DOMString direction,
  in DOMString granularity
);

Parameters

alter

Can be one of { "move", "extend" }

• "move" collapses the selection to the end of the selection and applies the movement direction/granularity to the collapsed selection.
• "extend" leaves the start of the selection unchanged, and applies movement direction/granularity to the end of the selection.

direction

Can be one of { "forward", "backward", "left", "right" }

granularity

Can be one of { "character", "word", "line", "lineboundary" }

See also

• nsISelection