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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* 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/. */
"use strict";
const { Cu, Cc, Ci } = require("chrome");
const Services = require("Services");
const { getMostRecentBrowserWindow } = require("sdk/window/utils");
const OPEN_FLAGS = {
RDONLY: parseInt("0x01", 16),
WRONLY: parseInt("0x02", 16),
CREATE_FILE: parseInt("0x08", 16),
APPEND: parseInt("0x10", 16),
TRUNCATE: parseInt("0x20", 16),
EXCL: parseInt("0x80", 16)
};
/**
* Open File Save As dialog and let the user to pick proper file location.
*/
exports.getTargetFile = function () {
let fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
let win = getMostRecentBrowserWindow();
fp.init(win, null, Ci.nsIFilePicker.modeSave);
fp.appendFilter("JSON Files", "*.json; *.jsonp;");
fp.appendFilters(Ci.nsIFilePicker.filterText);
fp.appendFilters(Ci.nsIFilePicker.filterAll);
fp.filterIndex = 0;
let rv = fp.show();
if (rv == Ci.nsIFilePicker.returnOK || rv == Ci.nsIFilePicker.returnReplace) {
return fp.file;
}
return null;
};
/**
* Save JSON to a file
*/
exports.saveToFile = function (file, jsonString) {
let foStream = Cc["@mozilla.org/network/file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
// write, create, truncate
let openFlags = OPEN_FLAGS.WRONLY | OPEN_FLAGS.CREATE_FILE |
OPEN_FLAGS.TRUNCATE;
let permFlags = parseInt("0666", 8);
foStream.init(file, openFlags, permFlags, 0);
let converter = Cc["@mozilla.org/intl/converter-output-stream;1"]
.createInstance(Ci.nsIConverterOutputStream);
converter.init(foStream, "UTF-8", 0, 0);
// The entire jsonString can be huge so, write the data in chunks.
let chunkLength = 1024 * 1204;
for (let i = 0; i <= jsonString.length; i++) {
let data = jsonString.substr(i, chunkLength + 1);
if (data) {
converter.writeString(data);
}
i = i + chunkLength;
}
// this closes foStream
converter.close();
};
/**
* Get the current theme from preferences.
*/
exports.getCurrentTheme = function () {
return Services.prefs.getCharPref("devtools.theme");
};
/**
* Export given object into the target window scope.
*/
exports.exportIntoContentScope = function (win, obj, defineAs) {
let clone = Cu.createObjectIn(win, {
defineAs: defineAs
});
let props = Object.getOwnPropertyNames(obj);
for (let i = 0; i < props.length; i++) {
let propName = props[i];
let propValue = obj[propName];
if (typeof propValue == "function") {
Cu.exportFunction(propValue, clone, {
defineAs: propName
});
} else {
clone[propName] = Cu.cloneInto(propValue, win);
}
}
};
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