uBlock/platform/firefox/vapi-common.js

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/*******************************************************************************
µBlock - a browser extension to block requests.
Copyright (C) 2014 The µBlock authors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
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/* global sendAsyncMessage */
// For background page or non-background pages
/******************************************************************************/
(function() {
'use strict';
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/******************************************************************************/
const {Services} = Components.utils.import(
'resource://gre/modules/Services.jsm',
null
);
self.vAPI = self.vAPI || {};
/******************************************************************************/
// http://www.w3.org/International/questions/qa-scripts#directions
var setScriptDirection = function(language) {
document.body.setAttribute(
'dir',
['ar', 'he', 'fa', 'ps', 'ur'].indexOf(language) !== -1 ? 'rtl' : 'ltr'
);
};
/******************************************************************************/
vAPI.download = function(details) {
if ( !details.url ) {
return;
}
var a = document.createElement('a');
a.href = details.url;
a.setAttribute('download', details.filename || '');
a.dispatchEvent(new MouseEvent('click'));
};
/******************************************************************************/
vAPI.insertHTML = (function() {
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const parser = Components.classes['@mozilla.org/parserutils;1']
.getService(Components.interfaces.nsIParserUtils);
return function(node, html) {
while ( node.firstChild ) {
node.removeChild(node.firstChild);
}
node.appendChild(parser.parseFragment(
html,
parser.SanitizerAllowStyle,
false,
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Services.io.newURI(document.baseURI, null, null),
document.documentElement
));
};
})();
/******************************************************************************/
vAPI.getURL = function(path) {
return 'chrome://' + location.host + '/content/' + path.replace(/^\/+/, '');
};
/******************************************************************************/
vAPI.i18n = (function() {
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var stringBundle = Services.strings.createBundle(
'chrome://' + location.host + '/locale/messages.properties'
);
return function(s) {
try {
return stringBundle.GetStringFromName(s);
} catch (ex) {
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return '';
}
};
})();
setScriptDirection(navigator.language);
/******************************************************************************/
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vAPI.closePopup = function() {
sendAsyncMessage(location.host + ':closePopup');
};
/******************************************************************************/
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// A localStorage-like object which should be accessible from the
// background page or auxiliary pages.
// This storage is optional, but it is nice to have, for a more polished user
// experience.
vAPI.localStorage = {
PB: Services.prefs.getBranch('extensions.' + location.host + '.'),
str: Components.classes['@mozilla.org/supports-string;1']
.createInstance(Components.interfaces.nsISupportsString),
getItem: function(key) {
try {
return this.PB.getComplexValue(
key,
Components.interfaces.nsISupportsString
).data;
} catch (ex) {
return null;
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}
},
setItem: function(key, value) {
this.str.data = value;
this.PB.setComplexValue(
key,
Components.interfaces.nsISupportsString,
this.str
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);
},
removeItem: function(key) {
this.PB.clearUserPref(key);
},
clear: function() {
this.PB.deleteBranch('');
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}
};
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/******************************************************************************/
})();
/******************************************************************************/