void PageGroup::clearDomStorage()
{
if (!pageGroups)
return;
PageGroupMap::iterator end = pageGroups->end();
for (PageGroupMap::iterator it = pageGroups->begin(); it != end; ++it) {
String basePath = "";
// This is being called as a result of the user explicitly
// asking to clear all stored data (e.g. through a settings
// dialog. We need a page in the page group to fire a
// StorageEvent. There isn't really a correct page to use
// as the source (as the clear request hasn't come from a
// particular page). One thing we should ensure though is that
// we don't try to clear a private browsing mode page as that has no concept
// of DOM storage..
HashSet<Page*> pages = it->second->pages();
HashSet<Page*>::iterator pagesEnd = pages.end();
Page* page = 0;
for(HashSet<Page*>::iterator pit = pages.begin(); pit != pagesEnd; ++pit) {
Page* p = *pit;
// Grab the storage location from an arbitrary page. This is set
// to the same value on all private browsing and "normal" pages,
// so we can get it from anything.
if (basePath.isEmpty())
basePath = p->settings()->localStorageDatabasePath();
// DOM storage is disabled in private browsing pages, so nothing to do if
// this is such a page.
if (p->settings()->privateBrowsingEnabled())
continue;
// Clear session storage.
StorageNamespace* sessionStorage = p->sessionStorage(false);
if (sessionStorage)
sessionStorage->clear(p);
// Save this page so we can clear local storage.
page = p;
}
// If page is still null at this point, then the only pages that are
// open are private browsing pages. Hence no pages are currently using local
// storage, so we don't need a page pointer to send any events and the
// clear function will handle a 0 input.
it->second->localStorage()->clear(page);
it->second->localStorage()->close();
// Closing the storage areas will stop the background thread and so
// we need to remove the local storage ref here so that next time
// we come to a site that uses it the thread will get started again.
it->second->removeLocalStorage();
// At this point, active local and session storage have been cleared and the
// StorageAreas for this PageGroup closed. The final sync will have taken
// place. All that is left is to purge the database files.
if (!basePath.isEmpty()) {
Vector<String> files = listDirectory(basePath, "*.localstorage");
Vector<String>::iterator filesEnd = files.end();
for (Vector<String>::iterator it = files.begin(); it != filesEnd; ++it)
deleteFile(*it);
}
}
}
