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Dan Mills 2008-11-20 09:15:34 +09:00
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Коммит 08938154f7
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Weave.
*
* The Initial Developer of the Original Code is Mozilla.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dan Mills <thunder@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const EXPORTED_SYMBOLS = ['Collection'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cr = Components.results;
const Cu = Components.utils;
Cu.import("resource://weave/Observers.js");
Cu.import("resource://weave/Preferences.js");
Cu.import("resource://weave/log4moz.js");
Cu.import("resource://weave/constants.js");
Cu.import("resource://weave/util.js");
Cu.import("resource://weave/async.js");
Cu.import("resource://weave/crypto.js");
Cu.import("resource://weave/resource.js");
Cu.import("resource://weave/base_records/wbo.js");
Cu.import("resource://weave/base_records/crypto.js");
Cu.import("resource://weave/base_records/keys.js");
Function.prototype.async = Async.sugar;
function Collection(uri, authenticator) {
this._Coll_init(uri, authenticator);
}
Collection.prototype = {
__proto__: Resource.prototype,
_logName: "Collection",
_Coll_init: function Coll_init(uri, authenticator) {
this._init(uri, authenticator);
this.pushFilter(new JsonFilter());
this._full = true;
this._modified = 0;
this._data = [];
},
_rebuildURL: function Coll__rebuildURL() {
// XXX should consider what happens if it's not a URL...
this.uri.QueryInterface(Ci.nsIURL);
let args = [];
if (this.modified)
args.push('modified=' + this.modified);
if (this.full)
args.push('full=1');
this.uri.query = (args.length > 0)? '?' + args.join('&') : '';
},
// get full items
get full() { return this._full; },
set full(value) {
this._full = value;
this._rebuildURL();
},
// get only items modified since some date
get modified() { return this._modified; },
set modified(value) {
this._modified = value;
this._rebuildURL();
},
get iter() {
if (!this._iter)
this._iter = new CollectionIterator(this);
return this._iter;
},
get _json() {
let json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON);
this.__defineGetter__("_json", function() json);
return this._json;
},
pushRecord: function Coll_pushRecord(onComplete, record) {
let fn = function(record) {
let self = yield;
yield record.filterUpload(self.cb); // XXX EEK
this._data.push(this._json.decode(record.data)); // HACK HACK HACK
self.done();
};
fn.async(this, onComplete, record);
},
clearRecords: function Coll_clearRecords() {
this._data = [];
}
};
// FIXME: iterator should return WBOs / CryptoWrappers / Keys ?
// FIXME: need to reset iterator after a get/put/post
function CollectionIterator(coll) {
this._init(coll);
}
CollectionIterator.prototype = {
_init: function CollIter__init(coll) {
this._coll = coll;
this._idx = 0;
},
get count() { return this._coll.data.length; },
next: function CollIter_next() {
if (this._idx >= this.count)
return null;
let item = this._coll.data[this._idx++];
let wrap = new CryptoWrapper(this._coll.uri.resolve(item.id));
wrap.data = item;
return wrap;
},
reset: function CollIter_reset() {
this._idx = 0;
}
};