Stable
Get and set text and HTML selections in the current web page.
Usage
Registering for Selection Notifications
To be notified when the user makes a selection, register a listener for the "select" event. Each listener will be called after a selection is made.
function myListener() { console.log("A selection has been made."); } var selection = require("sdk/selection"); selection.on('select', myListener); // You can remove listeners too. selection.removeListener('select', myListener);
Iterating Over Discontiguous Selections
Discontiguous selections can be accessed by iterating over the selection
module itself. Each iteration yields a Selection
object from which text
, html
, and isContiguous
properties can be accessed.
Private Windows
If your add-on has not opted into private browsing, then you won't see any selections made in tabs that are hosted by private browser windows.
To learn more about private windows, how to opt into private browsing, and how to support private browsing, refer to the documentation for the private-browsing
module.
Examples
Log the current contiguous selection as text:
var selection = require("sdk/selection"); if (selection.text) console.log(selection.text);
Log the current discontiguous selections as HTML:
var selection = require("sdk/selection"); if (!selection.isContiguous) { for (var subselection in selection) { console.log(subselection.html); } }
Surround HTML selections with delimiters:
var selection = require("sdk/selection"); selection.on('select', function () { selection.html = "\\\" + selection.html + "///"; });
Globals
Properties
text
Gets or sets the current selection as plain text. Setting the selection removes all current selections, inserts the specified text at the location of the first selection, and selects the new text. Getting the selection when there is no current selection returns null
. Setting the selection when there is no current selection throws an exception. Getting the selection when isContiguous
is true
returns the text of the first selection.
html
Gets or sets the current selection as HTML. Setting the selection removes all current selections, inserts the specified text at the location of the first selection, and selects the new text. Getting the selection when there is no current selection returns null
. Setting the selection when there is no current selection throws an exception. Getting the selection when isContiguous
is true
returns the text of the first selection.
isContiguous
true
if the current selection is a single, contiguous selection, and false
if there are two or more discrete selections, each of which may or may not be spatially adjacent. (Discontiguous selections can be created by the user with Ctrl+click-and-drag.)
Events
select
This event is emitted whenever the user makes a new selection in a page.