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Places:Transactions: Difference between revisions
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→Grouping Transactions
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<code>function PlacesEditBookmarkKeywordTransaction(uri, newKeyword);</code> | <code>function PlacesEditBookmarkKeywordTransaction(uri, newKeyword);</code> | ||
= Grouping Transactions = | = Grouping Transactions = | ||
Several transactions can be aggregated together into a single atomic unit of work using <code>PlacesAggregateTransaction</code>. For example, consider creating and naming a new Bookmark: | |||
<pre> | |||
var ios = | |||
Cc["@mozilla.org/network/io-service"]. | |||
getService(Ci.nsIIOService); | |||
var uri = ios.newURI("http://www.mozilla.org/", null, null); | |||
var bms = | |||
Cc["@mozilla.org/browser/nav-bookmarks-service;1"]. | |||
getService(Ci.nsINavBookmarksService); | |||
var createTxn = new PlacesCreateItemTransaction(uri, bms.toolbarRoot, -1); | |||
var nameTxn = new PlacesEditItemTitleTransaction(uri, "Mozilla.org"); | |||
var aggTxn = new PlacesAggregateTransaction("Create Bookmark", | |||
[createTxn, nameTxn]); | |||
PlacesController.tm.doTransaction(aggTxn); | |||
</pre> | |||
The aggregator does/undoes/redoes each of the transactions in the set provided. | |||
= Creating Folders = | = Creating Folders = | ||
= Removing Folders = | = Removing Folders = | ||