diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/devtools/front_end/temp_storage_shared_worker/TempStorageSharedWorker.js')
-rw-r--r-- | chromium/third_party/WebKit/Source/devtools/front_end/temp_storage_shared_worker/TempStorageSharedWorker.js | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/devtools/front_end/temp_storage_shared_worker/TempStorageSharedWorker.js b/chromium/third_party/WebKit/Source/devtools/front_end/temp_storage_shared_worker/TempStorageSharedWorker.js new file mode 100644 index 00000000000..beda63125f2 --- /dev/null +++ b/chromium/third_party/WebKit/Source/devtools/front_end/temp_storage_shared_worker/TempStorageSharedWorker.js @@ -0,0 +1,141 @@ +/* + * Copyright (C) 2014 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +var ports = []; +var isTempStorageCleared = false; +/** + * @type {string} + */ +var tempStorageError; + +/** + * @param {!MessageEvent} event + */ +self.onconnect = function(event) +{ + var newPort = /** @type {!MessagePort} */ (event.ports[0]); + if (isTempStorageCleared) { + notifyTempStorageCleared(newPort); + return; + } + + newPort.onmessage = handleMessage; + newPort.onerror = handleError; + ports.push(newPort); + + if (ports.length === 1) + clearTempStorage(); +} + +function clearTempStorage() +{ + function didFail(e) + { + tempStorageError = "Failed to clear temp storage: " + e.message + " " + e.name; + console.error(tempStorageError); + didClearTempStorage(); + } + /** + * @param {!FileSystem} fs + */ + function didGetFS(fs) + { + fs.root.createReader().readEntries(didReadEntries, didFail); + } + /** + * @param {!Array.<!Entry>} entries + */ + function didReadEntries(entries) + { + var remainingEntries = entries.length; + if (!remainingEntries) { + didClearTempStorage(); + return; + } + function didDeleteEntry() + { + if (!--remainingEntries) + didClearTempStorage(); + } + function failedToDeleteEntry(e) + { + tempStorageError = "Failed to delete entry: " + e.message + " " + e.name; + console.error(tempStorageError); + didDeleteEntry(); + } + for (var i = 0; i < entries.length; i++) { + var entry = entries[i]; + if (entry.isFile) + entry.remove(didDeleteEntry, failedToDeleteEntry); + else + entry.removeRecursively(didDeleteEntry, failedToDeleteEntry); + } + } + self.webkitRequestFileSystem(self.TEMPORARY, 10, didGetFS, didFail); +} + +function didClearTempStorage() +{ + isTempStorageCleared = true; + for (var i = 0; i < ports.length; i++) + notifyTempStorageCleared(ports[i]); + ports = null; +} + +/** + * @param {!MessagePort} port + */ +function notifyTempStorageCleared(port) +{ + port.postMessage({ + type: "tempStorageCleared", + error: tempStorageError + }); +} + +function handleMessage(event) +{ + if (event.data.type === "disconnect") + removePort(event.target); +} + +function handleError(event) +{ + console.error("Error: " + event.data); + removePort(event.target); +} + +function removePort(port) +{ + if (!ports) + return; + var index = ports.indexOf(port); + ports.splice(index, 1); +} |