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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Helpers for clipboard handling.
"use strict";
const { Cc, Ci } = require("chrome");
const Services = require("Services");
const clipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(
Ci.nsIClipboardHelper
);
function copyString(string) {
clipboardHelper.copyString(string);
}
/**
* Retrieve the current clipboard data matching the flavor "text/unicode".
*
* @return {String} Clipboard text content, null if no text clipboard data is available.
*/
function getText() {
const flavor = "text/unicode";
const xferable = Cc["@mozilla.org/widget/transferable;1"].createInstance(
Ci.nsITransferable
);
if (!xferable) {
throw new Error(
"Couldn't get the clipboard data due to an internal error " +
"(couldn't create a Transferable object)."
);
}
xferable.init(null);
xferable.addDataFlavor(flavor);
// Get the data into our transferable.
Services.clipboard.getData(xferable, Services.clipboard.kGlobalClipboard);
const data = {};
try {
xferable.getTransferData(flavor, data);
} catch (e) {
// Clipboard doesn't contain data in flavor, return null.
return null;
}
// There's no data available, return.
if (!data.value) {
return null;
}
return data.value.QueryInterface(Ci.nsISupportsString).data;
}
exports.copyString = copyString;
exports.getText = getText;
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