gecko/browser/components/tabview/thumbnailStorage.js
Gavin Sharp 6b1a73e5bb Bug 692130: move tabview code and tests to browser/components/tabview, r=ttaubert
--HG--
rename : browser/components/places/Makefile.in => browser/components/tabview/Makefile.in
rename : browser/base/content/tabview/content.js => browser/components/tabview/content.js
rename : browser/base/content/tabview/drag.js => browser/components/tabview/drag.js
rename : browser/base/content/tabview/groupitems.js => browser/components/tabview/groupitems.js
rename : browser/base/content/tabview/iq.js => browser/components/tabview/iq.js
rename : browser/base/content/tabview/items.js => browser/components/tabview/items.js
rename : browser/base/content/tabview/modules/utils.jsm => browser/components/tabview/modules/utils.jsm
rename : browser/base/content/tabview/search.js => browser/components/tabview/search.js
rename : browser/base/content/tabview/storage.js => browser/components/tabview/storage.js
rename : browser/base/content/tabview/storagePolicy.js => browser/components/tabview/storagePolicy.js
rename : browser/base/content/tabview/tabitems.js => browser/components/tabview/tabitems.js
rename : browser/base/content/tabview/tabview.css => browser/components/tabview/tabview.css
rename : browser/base/content/tabview/tabview.html => browser/components/tabview/tabview.html
rename : browser/base/content/tabview/tabview.js => browser/components/tabview/tabview.js
rename : browser/base/content/test/tabview/Makefile.in => browser/components/tabview/test/Makefile.in
rename : browser/base/content/test/tabview/browser_tabview_alltabs.js => browser/components/tabview/test/browser_tabview_alltabs.js
rename : browser/base/content/test/tabview/browser_tabview_apptabs.js => browser/components/tabview/test/browser_tabview_apptabs.js
rename : browser/base/content/test/tabview/browser_tabview_bug580412.js => browser/components/tabview/test/browser_tabview_bug580412.js
rename : browser/base/content/test/tabview/browser_tabview_bug586553.js => browser/components/tabview/test/browser_tabview_bug586553.js
rename : browser/base/content/test/tabview/browser_tabview_bug587043.js => browser/components/tabview/test/browser_tabview_bug587043.js
rename : browser/base/content/test/tabview/browser_tabview_bug587231.js => browser/components/tabview/test/browser_tabview_bug587231.js
rename : browser/base/content/test/tabview/browser_tabview_bug587276.js => browser/components/tabview/test/browser_tabview_bug587276.js
rename : browser/base/content/test/tabview/browser_tabview_bug587351.js => browser/components/tabview/test/browser_tabview_bug587351.js
rename : browser/base/content/test/tabview/browser_tabview_bug587503.js => browser/components/tabview/test/browser_tabview_bug587503.js
rename : browser/base/content/test/tabview/browser_tabview_bug587990.js => browser/components/tabview/test/browser_tabview_bug587990.js
rename : browser/base/content/test/tabview/browser_tabview_bug588265.js => browser/components/tabview/test/browser_tabview_bug588265.js
rename : browser/base/content/test/tabview/browser_tabview_bug589324.js => browser/components/tabview/test/browser_tabview_bug589324.js
rename : browser/base/content/test/tabview/browser_tabview_bug590606.js => browser/components/tabview/test/browser_tabview_bug590606.js
rename : browser/base/content/test/tabview/browser_tabview_bug591706.js => browser/components/tabview/test/browser_tabview_bug591706.js
rename : browser/base/content/test/tabview/browser_tabview_bug593283.js => browser/components/tabview/test/browser_tabview_bug593283.js
rename : browser/base/content/test/tabview/browser_tabview_bug594958.js => browser/components/tabview/test/browser_tabview_bug594958.js
rename : browser/base/content/test/tabview/browser_tabview_bug595191.js => browser/components/tabview/test/browser_tabview_bug595191.js
rename : browser/base/content/test/tabview/browser_tabview_bug595436.js => browser/components/tabview/test/browser_tabview_bug595436.js
rename : browser/base/content/test/tabview/browser_tabview_bug595518.js => browser/components/tabview/test/browser_tabview_bug595518.js
rename : browser/base/content/test/tabview/browser_tabview_bug595521.js => browser/components/tabview/test/browser_tabview_bug595521.js
rename : browser/base/content/test/tabview/browser_tabview_bug595560.js => browser/components/tabview/test/browser_tabview_bug595560.js
rename : browser/base/content/test/tabview/browser_tabview_bug595601.js => browser/components/tabview/test/browser_tabview_bug595601.js
rename : browser/base/content/test/tabview/browser_tabview_bug595804.js => browser/components/tabview/test/browser_tabview_bug595804.js
rename : browser/base/content/test/tabview/browser_tabview_bug595930.js => browser/components/tabview/test/browser_tabview_bug595930.js
rename : browser/base/content/test/tabview/browser_tabview_bug595943.js => browser/components/tabview/test/browser_tabview_bug595943.js
rename : browser/base/content/test/tabview/browser_tabview_bug595965.js => browser/components/tabview/test/browser_tabview_bug595965.js
rename : browser/base/content/test/tabview/browser_tabview_bug596781.js => browser/components/tabview/test/browser_tabview_bug596781.js
rename : browser/base/content/test/tabview/browser_tabview_bug597248.js => browser/components/tabview/test/browser_tabview_bug597248.js
rename : browser/base/content/test/tabview/browser_tabview_bug597360.js => browser/components/tabview/test/browser_tabview_bug597360.js
rename : browser/base/content/test/tabview/browser_tabview_bug597399.js => browser/components/tabview/test/browser_tabview_bug597399.js
rename : browser/base/content/test/tabview/browser_tabview_bug597980.js => browser/components/tabview/test/browser_tabview_bug597980.js
rename : browser/base/content/test/tabview/browser_tabview_bug598375.js => browser/components/tabview/test/browser_tabview_bug598375.js
rename : browser/base/content/test/tabview/browser_tabview_bug598600.js => browser/components/tabview/test/browser_tabview_bug598600.js
rename : browser/base/content/test/tabview/browser_tabview_bug599048.js => browser/components/tabview/test/browser_tabview_bug599048.js
rename : browser/base/content/test/tabview/browser_tabview_bug599626.js => browser/components/tabview/test/browser_tabview_bug599626.js
rename : browser/base/content/test/tabview/browser_tabview_bug600645.js => browser/components/tabview/test/browser_tabview_bug600645.js
rename : browser/base/content/test/tabview/browser_tabview_bug600812.js => browser/components/tabview/test/browser_tabview_bug600812.js
rename : browser/base/content/test/tabview/browser_tabview_bug602432.js => browser/components/tabview/test/browser_tabview_bug602432.js
rename : browser/base/content/test/tabview/browser_tabview_bug604098.js => browser/components/tabview/test/browser_tabview_bug604098.js
rename : browser/base/content/test/tabview/browser_tabview_bug606657.js => browser/components/tabview/test/browser_tabview_bug606657.js
rename : browser/base/content/test/tabview/browser_tabview_bug606905.js => browser/components/tabview/test/browser_tabview_bug606905.js
rename : browser/base/content/test/tabview/browser_tabview_bug607108.js => browser/components/tabview/test/browser_tabview_bug607108.js
rename : browser/base/content/test/tabview/browser_tabview_bug608037.js => browser/components/tabview/test/browser_tabview_bug608037.js
rename : browser/base/content/test/tabview/browser_tabview_bug608158.js => browser/components/tabview/test/browser_tabview_bug608158.js
rename : browser/base/content/test/tabview/browser_tabview_bug608184.js => browser/components/tabview/test/browser_tabview_bug608184.js
rename : browser/base/content/test/tabview/browser_tabview_bug608405.js => browser/components/tabview/test/browser_tabview_bug608405.js
rename : browser/base/content/test/tabview/browser_tabview_bug610208.js => browser/components/tabview/test/browser_tabview_bug610208.js
rename : browser/base/content/test/tabview/browser_tabview_bug610242.js => browser/components/tabview/test/browser_tabview_bug610242.js
rename : browser/base/content/test/tabview/browser_tabview_bug612470.js => browser/components/tabview/test/browser_tabview_bug612470.js
rename : browser/base/content/test/tabview/browser_tabview_bug613541.js => browser/components/tabview/test/browser_tabview_bug613541.js
rename : browser/base/content/test/tabview/browser_tabview_bug616729.js => browser/components/tabview/test/browser_tabview_bug616729.js
rename : browser/base/content/test/tabview/browser_tabview_bug616967.js => browser/components/tabview/test/browser_tabview_bug616967.js
rename : browser/base/content/test/tabview/browser_tabview_bug618816.js => browser/components/tabview/test/browser_tabview_bug618816.js
rename : browser/base/content/test/tabview/browser_tabview_bug618828.js => browser/components/tabview/test/browser_tabview_bug618828.js
rename : browser/base/content/test/tabview/browser_tabview_bug619937.js => browser/components/tabview/test/browser_tabview_bug619937.js
rename : browser/base/content/test/tabview/browser_tabview_bug622835.js => browser/components/tabview/test/browser_tabview_bug622835.js
rename : browser/base/content/test/tabview/browser_tabview_bug623768.js => browser/components/tabview/test/browser_tabview_bug623768.js
rename : browser/base/content/test/tabview/browser_tabview_bug624265.js => browser/components/tabview/test/browser_tabview_bug624265.js
rename : browser/base/content/test/tabview/browser_tabview_bug624692.js => browser/components/tabview/test/browser_tabview_bug624692.js
rename : browser/base/content/test/tabview/browser_tabview_bug624727.js => browser/components/tabview/test/browser_tabview_bug624727.js
rename : browser/base/content/test/tabview/browser_tabview_bug624847.js => browser/components/tabview/test/browser_tabview_bug624847.js
rename : browser/base/content/test/tabview/browser_tabview_bug624931.js => browser/components/tabview/test/browser_tabview_bug624931.js
rename : browser/base/content/test/tabview/browser_tabview_bug624953.js => browser/components/tabview/test/browser_tabview_bug624953.js
rename : browser/base/content/test/tabview/browser_tabview_bug625195.js => browser/components/tabview/test/browser_tabview_bug625195.js
rename : browser/base/content/test/tabview/browser_tabview_bug625269.js => browser/components/tabview/test/browser_tabview_bug625269.js
rename : browser/base/content/test/tabview/browser_tabview_bug625424.js => browser/components/tabview/test/browser_tabview_bug625424.js
rename : browser/base/content/test/tabview/browser_tabview_bug625955.js => browser/components/tabview/test/browser_tabview_bug625955.js
rename : browser/base/content/test/tabview/browser_tabview_bug626368.js => browser/components/tabview/test/browser_tabview_bug626368.js
rename : browser/base/content/test/tabview/browser_tabview_bug626455.js => browser/components/tabview/test/browser_tabview_bug626455.js
rename : browser/base/content/test/tabview/browser_tabview_bug626525.js => browser/components/tabview/test/browser_tabview_bug626525.js
rename : browser/base/content/test/tabview/browser_tabview_bug626791.js => browser/components/tabview/test/browser_tabview_bug626791.js
rename : browser/base/content/test/tabview/browser_tabview_bug627288.js => browser/components/tabview/test/browser_tabview_bug627288.js
rename : browser/base/content/test/tabview/browser_tabview_bug627736.js => browser/components/tabview/test/browser_tabview_bug627736.js
rename : browser/base/content/test/tabview/browser_tabview_bug628061.js => browser/components/tabview/test/browser_tabview_bug628061.js
rename : browser/base/content/test/tabview/browser_tabview_bug628165.js => browser/components/tabview/test/browser_tabview_bug628165.js
rename : browser/base/content/test/tabview/browser_tabview_bug628270.js => browser/components/tabview/test/browser_tabview_bug628270.js
rename : browser/base/content/test/tabview/browser_tabview_bug628887.js => browser/components/tabview/test/browser_tabview_bug628887.js
rename : browser/base/content/test/tabview/browser_tabview_bug629189.js => browser/components/tabview/test/browser_tabview_bug629189.js
rename : browser/base/content/test/tabview/browser_tabview_bug629195.js => browser/components/tabview/test/browser_tabview_bug629195.js
rename : browser/base/content/test/tabview/browser_tabview_bug630102.js => browser/components/tabview/test/browser_tabview_bug630102.js
rename : browser/base/content/test/tabview/browser_tabview_bug630157.js => browser/components/tabview/test/browser_tabview_bug630157.js
rename : browser/base/content/test/tabview/browser_tabview_bug631662.js => browser/components/tabview/test/browser_tabview_bug631662.js
rename : browser/base/content/test/tabview/browser_tabview_bug631752.js => browser/components/tabview/test/browser_tabview_bug631752.js
rename : browser/base/content/test/tabview/browser_tabview_bug633190.js => browser/components/tabview/test/browser_tabview_bug633190.js
rename : browser/base/content/test/tabview/browser_tabview_bug633788.js => browser/components/tabview/test/browser_tabview_bug633788.js
rename : browser/base/content/test/tabview/browser_tabview_bug634077.js => browser/components/tabview/test/browser_tabview_bug634077.js
rename : browser/base/content/test/tabview/browser_tabview_bug634085.js => browser/components/tabview/test/browser_tabview_bug634085.js
rename : browser/base/content/test/tabview/browser_tabview_bug634672.js => browser/components/tabview/test/browser_tabview_bug634672.js
rename : browser/base/content/test/tabview/browser_tabview_bug635696.js => browser/components/tabview/test/browser_tabview_bug635696.js
rename : browser/base/content/test/tabview/browser_tabview_bug637840.js => browser/components/tabview/test/browser_tabview_bug637840.js
rename : browser/base/content/test/tabview/browser_tabview_bug640765.js => browser/components/tabview/test/browser_tabview_bug640765.js
rename : browser/base/content/test/tabview/browser_tabview_bug641802.js => browser/components/tabview/test/browser_tabview_bug641802.js
rename : browser/base/content/test/tabview/browser_tabview_bug642793.js => browser/components/tabview/test/browser_tabview_bug642793.js
rename : browser/base/content/test/tabview/browser_tabview_bug643392.js => browser/components/tabview/test/browser_tabview_bug643392.js
rename : browser/base/content/test/tabview/browser_tabview_bug644097.js => browser/components/tabview/test/browser_tabview_bug644097.js
rename : browser/base/content/test/tabview/browser_tabview_bug648882.js => browser/components/tabview/test/browser_tabview_bug648882.js
rename : browser/base/content/test/tabview/browser_tabview_bug649006.js => browser/components/tabview/test/browser_tabview_bug649006.js
rename : browser/base/content/test/tabview/browser_tabview_bug649307.js => browser/components/tabview/test/browser_tabview_bug649307.js
rename : browser/base/content/test/tabview/browser_tabview_bug649319.js => browser/components/tabview/test/browser_tabview_bug649319.js
rename : browser/base/content/test/tabview/browser_tabview_bug650280.js => browser/components/tabview/test/browser_tabview_bug650280.js
rename : browser/base/content/test/tabview/browser_tabview_bug650573.js => browser/components/tabview/test/browser_tabview_bug650573.js
rename : browser/base/content/test/tabview/browser_tabview_bug651311.js => browser/components/tabview/test/browser_tabview_bug651311.js
rename : browser/base/content/test/tabview/browser_tabview_bug654295.js => browser/components/tabview/test/browser_tabview_bug654295.js
rename : browser/base/content/test/tabview/browser_tabview_bug654721.js => browser/components/tabview/test/browser_tabview_bug654721.js
rename : browser/base/content/test/tabview/browser_tabview_bug654941.js => browser/components/tabview/test/browser_tabview_bug654941.js
rename : browser/base/content/test/tabview/browser_tabview_bug655269.js => browser/components/tabview/test/browser_tabview_bug655269.js
rename : browser/base/content/test/tabview/browser_tabview_bug656778.js => browser/components/tabview/test/browser_tabview_bug656778.js
rename : browser/base/content/test/tabview/browser_tabview_bug656913.js => browser/components/tabview/test/browser_tabview_bug656913.js
rename : browser/base/content/test/tabview/browser_tabview_bug662266.js => browser/components/tabview/test/browser_tabview_bug662266.js
rename : browser/base/content/test/tabview/browser_tabview_bug663421.js => browser/components/tabview/test/browser_tabview_bug663421.js
rename : browser/base/content/test/tabview/browser_tabview_bug665502.js => browser/components/tabview/test/browser_tabview_bug665502.js
rename : browser/base/content/test/tabview/browser_tabview_bug669694.js => browser/components/tabview/test/browser_tabview_bug669694.js
rename : browser/base/content/test/tabview/browser_tabview_bug673196.js => browser/components/tabview/test/browser_tabview_bug673196.js
rename : browser/base/content/test/tabview/browser_tabview_bug673729.js => browser/components/tabview/test/browser_tabview_bug673729.js
rename : browser/base/content/test/tabview/browser_tabview_bug677310.js => browser/components/tabview/test/browser_tabview_bug677310.js
rename : browser/base/content/test/tabview/browser_tabview_bug679853.js => browser/components/tabview/test/browser_tabview_bug679853.js
rename : browser/base/content/test/tabview/browser_tabview_bug681599.js => browser/components/tabview/test/browser_tabview_bug681599.js
rename : browser/base/content/test/tabview/browser_tabview_bug685476.js => browser/components/tabview/test/browser_tabview_bug685476.js
rename : browser/base/content/test/tabview/browser_tabview_bug685692.js => browser/components/tabview/test/browser_tabview_bug685692.js
rename : browser/base/content/test/tabview/browser_tabview_bug686654.js => browser/components/tabview/test/browser_tabview_bug686654.js
rename : browser/base/content/test/tabview/browser_tabview_click_group.js => browser/components/tabview/test/browser_tabview_click_group.js
rename : browser/base/content/test/tabview/browser_tabview_dragdrop.js => browser/components/tabview/test/browser_tabview_dragdrop.js
rename : browser/base/content/test/tabview/browser_tabview_exit_button.js => browser/components/tabview/test/browser_tabview_exit_button.js
rename : browser/base/content/test/tabview/browser_tabview_expander.js => browser/components/tabview/test/browser_tabview_expander.js
rename : browser/base/content/test/tabview/browser_tabview_firstrun_pref.js => browser/components/tabview/test/browser_tabview_firstrun_pref.js
rename : browser/base/content/test/tabview/browser_tabview_group.js => browser/components/tabview/test/browser_tabview_group.js
rename : browser/base/content/test/tabview/browser_tabview_launch.js => browser/components/tabview/test/browser_tabview_launch.js
rename : browser/base/content/test/tabview/browser_tabview_layout.js => browser/components/tabview/test/browser_tabview_layout.js
rename : browser/base/content/test/tabview/browser_tabview_multiwindow_search.js => browser/components/tabview/test/browser_tabview_multiwindow_search.js
rename : browser/base/content/test/tabview/browser_tabview_privatebrowsing.js => browser/components/tabview/test/browser_tabview_privatebrowsing.js
rename : browser/base/content/test/tabview/browser_tabview_rtl.js => browser/components/tabview/test/browser_tabview_rtl.js
rename : browser/base/content/test/tabview/browser_tabview_search.js => browser/components/tabview/test/browser_tabview_search.js
rename : browser/base/content/test/tabview/browser_tabview_snapping.js => browser/components/tabview/test/browser_tabview_snapping.js
rename : browser/base/content/test/tabview/browser_tabview_startup_transitions.js => browser/components/tabview/test/browser_tabview_startup_transitions.js
rename : browser/base/content/test/tabview/browser_tabview_storage_policy.js => browser/components/tabview/test/browser_tabview_storage_policy.js
rename : browser/base/content/test/tabview/browser_tabview_thumbnail_storage.js => browser/components/tabview/test/browser_tabview_thumbnail_storage.js
rename : browser/base/content/test/tabview/browser_tabview_undo_group.js => browser/components/tabview/test/browser_tabview_undo_group.js
rename : browser/base/content/test/tabview/dummy_page.html => browser/components/tabview/test/dummy_page.html
rename : browser/base/content/test/tabview/head.js => browser/components/tabview/test/head.js
rename : browser/base/content/test/tabview/search1.html => browser/components/tabview/test/search1.html
rename : browser/base/content/test/tabview/search2.html => browser/components/tabview/test/search2.html
rename : browser/base/content/test/tabview/test_bug600645.html => browser/components/tabview/test/test_bug600645.html
rename : browser/base/content/test/tabview/test_bug644097.html => browser/components/tabview/test/test_bug644097.html
rename : browser/base/content/tabview/thumbnailStorage.js => browser/components/tabview/thumbnailStorage.js
rename : browser/base/content/tabview/trench.js => browser/components/tabview/trench.js
rename : browser/base/content/tabview/ui.js => browser/components/tabview/ui.js
2011-10-05 08:46:47 -07:00

267 lines
9.0 KiB
JavaScript

/* ***** 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 thumbnailStorage.js.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Raymond Lee <raymond@appcoast.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 ***** */
// **********
// Title: thumbnailStorage.js
// ##########
// Class: ThumbnailStorage
// Singleton for persistent storage of thumbnail data.
let ThumbnailStorage = {
CACHE_CLIENT_IDENTIFIER: "tabview-cache",
CACHE_PREFIX: "moz-panorama:",
// Holds the cache session reference
_cacheSession: null,
// Holds the string input stream reference
_stringInputStream: null,
// Holds the storage stream reference
_storageStream: null,
// ----------
// Function: toString
// Prints [ThumbnailStorage] for debug use.
toString: function ThumbnailStorage_toString() {
return "[ThumbnailStorage]";
},
// ----------
// Function: init
// Should be called when UI is initialized.
init: function ThumbnailStorage_init() {
// Create stream-based cache session for tabview
let cacheService =
Cc["@mozilla.org/network/cache-service;1"].
getService(Ci.nsICacheService);
this._cacheSession = cacheService.createSession(
this.CACHE_CLIENT_IDENTIFIER, Ci.nsICache.STORE_ON_DISK, true);
this._stringInputStream = Components.Constructor(
"@mozilla.org/io/string-input-stream;1", "nsIStringInputStream",
"setData");
this._storageStream = Components.Constructor(
"@mozilla.org/storagestream;1", "nsIStorageStream",
"init");
},
// ----------
// Function: _openCacheEntry
// Opens a cache entry for the given <url> and requests access <access>.
// Calls <successCallback>(entry) when the entry was successfully opened with
// requested access rights. Otherwise calls <errorCallback>().
//
// Parameters:
// url - the url to use as the storage key
// access - access flags, see Ci.nsICache.ACCESS_*
// successCallback - the callback to be called on success
// errorCallback - the callback to be called when an error occured
// options - an object with additional parameters, see below
//
// Possible options:
// synchronously - set to true to force sync mode
_openCacheEntry:
function ThumbnailStorage__openCacheEntry(url, access, successCallback,
errorCallback, options) {
Utils.assert(url, "invalid or missing argument <url>");
Utils.assert(access, "invalid or missing argument <access>");
Utils.assert(successCallback, "invalid or missing argument <successCallback>");
Utils.assert(errorCallback, "invalid or missing argument <errorCallback>");
function onCacheEntryAvailable(entry, accessGranted, status) {
if (entry && access == accessGranted && Components.isSuccessCode(status)) {
successCallback(entry);
} else {
if (entry)
entry.close();
errorCallback();
}
}
let key = this.CACHE_PREFIX + url;
if (options && options.synchronously) {
let entry = this._cacheSession.openCacheEntry(key, access, true);
let status = Cr.NS_OK;
onCacheEntryAvailable(entry, entry.accessGranted, status);
} else {
let listener = new CacheListener(onCacheEntryAvailable);
this._cacheSession.asyncOpenCacheEntry(key, access, listener);
}
},
// ----------
// Function: saveThumbnail
// Saves the given thumbnail in the cache.
//
// Parameters:
// url - the url to use as the storage key
// imageData - the image data to save for the given key
// callback - the callback that is called when the operation is finished
// options - an object with additional parameters, see below
//
// Possible options:
// synchronously - set to true to force sync mode
saveThumbnail:
function ThumbnailStorage_saveThumbnail(url, imageData, callback, options) {
Utils.assert(url, "invalid or missing argument <url>");
Utils.assert(imageData, "invalid or missing argument <imageData>");
Utils.assert(callback, "invalid or missing argument <callback>");
let synchronously = (options && options.synchronously);
let self = this;
function onCacheEntryAvailable(entry) {
let outputStream = entry.openOutputStream(0);
function cleanup() {
outputStream.close();
entry.close();
}
// synchronous mode
if (synchronously) {
outputStream.write(imageData, imageData.length);
cleanup();
callback();
return;
}
// asynchronous mode
let inputStream = new self._stringInputStream(imageData, imageData.length);
gNetUtil.asyncCopy(inputStream, outputStream, function (result) {
cleanup();
inputStream.close();
callback(Components.isSuccessCode(result) ? "" : "failure");
});
}
function onCacheEntryUnavailable() {
callback("unavailable");
}
this._openCacheEntry(url, Ci.nsICache.ACCESS_WRITE, onCacheEntryAvailable,
onCacheEntryUnavailable, options);
},
// ----------
// Function: loadThumbnail
// Loads a thumbnail from the cache.
//
// Parameters:
// url - the url to use as the storage key
// callback - the callback that is called when the operation is finished
loadThumbnail: function ThumbnailStorage_loadThumbnail(url, callback) {
Utils.assert(url, "invalid or missing argument <url>");
Utils.assert(callback, "invalid or missing argument <callback>");
let self = this;
function onCacheEntryAvailable(entry) {
let imageChunks = [];
let nativeInputStream = entry.openInputStream(0);
const CHUNK_SIZE = 0x10000; // 65k
const PR_UINT32_MAX = 0xFFFFFFFF;
let storageStream = new self._storageStream(CHUNK_SIZE, PR_UINT32_MAX, null);
let storageOutStream = storageStream.getOutputStream(0);
let cleanup = function () {
nativeInputStream.close();
storageStream.close();
storageOutStream.close();
entry.close();
}
gNetUtil.asyncCopy(nativeInputStream, storageOutStream, function (result) {
// cancel if parent window has already been closed
if (typeof UI == "undefined") {
cleanup();
return;
}
let imageData = null;
let isSuccess = Components.isSuccessCode(result);
if (isSuccess) {
let storageInStream = storageStream.newInputStream(0);
imageData = gNetUtil.readInputStreamToString(storageInStream,
storageInStream.available());
storageInStream.close();
}
cleanup();
callback(isSuccess ? "" : "failure", imageData);
});
}
function onCacheEntryUnavailable() {
callback("unavailable");
}
this._openCacheEntry(url, Ci.nsICache.ACCESS_READ, onCacheEntryAvailable,
onCacheEntryUnavailable);
}
}
// ##########
// Class: CacheListener
// Generic CacheListener for feeding to asynchronous cache calls.
// Calls <callback>(entry, access, status) when the requested cache entry
// is available.
function CacheListener(callback) {
Utils.assert(typeof callback == "function", "callback arg must be a function");
this.callback = callback;
};
CacheListener.prototype = {
// ----------
// Function: toString
// Prints [CacheListener] for debug use
toString: function CacheListener_toString() {
return "[CacheListener]";
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsICacheListener]),
onCacheEntryAvailable: function CacheListener_onCacheEntryAvailable(
entry, access, status) {
this.callback(entry, access, status);
}
};