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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Custom binding for the fileSystem API. | 5 // Custom binding for the fileSystem API. |
| 6 | 6 |
| 7 var binding = require('binding').Binding.create('fileSystem'); | 7 var binding = require('binding').Binding.create('fileSystem'); |
| 8 var sendRequest = require('sendRequest'); |
| 8 | 9 |
| 9 var fileSystemNatives = requireNative('file_system_natives'); | 10 var getFileBindingsForApi = |
| 10 var GetIsolatedFileSystem = fileSystemNatives.GetIsolatedFileSystem; | 11 require('fileEntryBindingUtil').getFileBindingsForApi; |
| 11 var lastError = require('lastError'); | 12 var fileBindings = getFileBindingsForApi('fileSystem'); |
| 12 var sendRequest = require('sendRequest'); | 13 var bindFileEntryCallback = fileBindings.bindFileEntryCallback; |
| 13 var GetModuleSystem = requireNative('v8_context').GetModuleSystem; | 14 var entryIdManager = fileBindings.entryIdManager; |
| 14 // TODO(sammc): Don't require extension. See http://crbug.com/235689. | |
| 15 var GetExtensionViews = requireNative('runtime').GetExtensionViews; | |
| 16 | |
| 17 // Fallback to using the current window if no background page is running. | |
| 18 var backgroundPage = GetExtensionViews(-1, 'BACKGROUND')[0] || window; | |
| 19 var backgroundPageModuleSystem = GetModuleSystem(backgroundPage); | |
| 20 | |
| 21 // All windows use the bindFileEntryCallback from the background page so their | |
| 22 // FileEntry objects have the background page's context as their own. This | |
| 23 // allows them to be used from other windows (including the background page) | |
| 24 // after the original window is closed. | |
| 25 if (window == backgroundPage) { | |
| 26 var bindFileEntryCallback = function(functionName, apiFunctions) { | |
| 27 apiFunctions.setCustomCallback(functionName, | |
| 28 function(name, request, response) { | |
| 29 if (request.callback && response) { | |
| 30 var callback = request.callback; | |
| 31 request.callback = null; | |
| 32 | |
| 33 var entries = []; | |
| 34 var hasError = false; | |
| 35 | |
| 36 var getEntryError = function(fileError) { | |
| 37 if (!hasError) { | |
| 38 hasError = true; | |
| 39 lastError.run( | |
| 40 'fileSystem.' + functionName, | |
| 41 'Error getting fileEntry, code: ' + fileError.code, | |
| 42 request.stack, | |
| 43 callback); | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 // Loop through the response entries and asynchronously get the | |
| 48 // FileEntry for each. We use hasError to ensure that only the first | |
| 49 // error is reported. Note that an error can occur either during the | |
| 50 // loop or in the asynchronous error callback to getFile. | |
| 51 $Array.forEach(response.entries, function(entry) { | |
| 52 if (hasError) | |
| 53 return; | |
| 54 var fileSystemId = entry.fileSystemId; | |
| 55 var baseName = entry.baseName; | |
| 56 var id = entry.id; | |
| 57 var fs = GetIsolatedFileSystem(fileSystemId); | |
| 58 | |
| 59 try { | |
| 60 var getEntryCallback = function(fileEntry) { | |
| 61 if (hasError) | |
| 62 return; | |
| 63 entryIdManager.registerEntry(id, fileEntry); | |
| 64 entries.push(fileEntry); | |
| 65 // Once all entries are ready, pass them to the callback. In the | |
| 66 // event of an error, this condition will never be satisfied so | |
| 67 // the callback will not be called with any entries. | |
| 68 if (entries.length == response.entries.length) { | |
| 69 if (response.multiple) { | |
| 70 sendRequest.safeCallbackApply( | |
| 71 'fileSystem.' + functionName, request, callback, | |
| 72 [entries]); | |
| 73 } else { | |
| 74 sendRequest.safeCallbackApply( | |
| 75 'fileSystem.' + functionName, request, callback, | |
| 76 [entries[0]]); | |
| 77 } | |
| 78 } | |
| 79 } | |
| 80 // TODO(koz): fs.root.getFile() makes a trip to the browser process, | |
| 81 // but it might be possible avoid that by calling | |
| 82 // WebDOMFileSystem::createV8Entry(). | |
| 83 if (entry.isDirectory) { | |
| 84 fs.root.getDirectory(baseName, {}, getEntryCallback, | |
| 85 getEntryError); | |
| 86 } else { | |
| 87 fs.root.getFile(baseName, {}, getEntryCallback, getEntryError); | |
| 88 } | |
| 89 } catch (e) { | |
| 90 if (!hasError) { | |
| 91 hasError = true; | |
| 92 lastError.run('fileSystem.' + functionName, | |
| 93 'Error getting fileEntry: ' + e.stack, | |
| 94 request.stack, | |
| 95 callback); | |
| 96 } | |
| 97 } | |
| 98 }); | |
| 99 } | |
| 100 }); | |
| 101 }; | |
| 102 var entryIdManager = require('entryIdManager'); | |
| 103 } else { | |
| 104 // Force the fileSystem API to be loaded in the background page. Using | |
| 105 // backgroundPageModuleSystem.require('fileSystem') is insufficient as | |
| 106 // requireNative is only allowed while lazily loading an API. | |
| 107 backgroundPage.chrome.fileSystem; | |
| 108 var bindFileEntryCallback = backgroundPageModuleSystem.require( | |
| 109 'fileSystem').bindFileEntryCallback; | |
| 110 var entryIdManager = backgroundPageModuleSystem.require('entryIdManager'); | |
| 111 } | |
| 112 | 15 |
| 113 binding.registerCustomHook(function(bindingsAPI) { | 16 binding.registerCustomHook(function(bindingsAPI) { |
| 114 var apiFunctions = bindingsAPI.apiFunctions; | 17 var apiFunctions = bindingsAPI.apiFunctions; |
| 115 var fileSystem = bindingsAPI.compiledApi; | 18 var fileSystem = bindingsAPI.compiledApi; |
| 116 | 19 |
| 117 function bindFileEntryFunction(functionName) { | 20 function bindFileEntryFunction(functionName) { |
| 118 apiFunctions.setUpdateArgumentsPostValidate( | 21 apiFunctions.setUpdateArgumentsPostValidate( |
| 119 functionName, function(fileEntry, callback) { | 22 functionName, function(fileEntry, callback) { |
| 120 var fileSystemName = fileEntry.filesystem.name; | 23 var fileSystemName = fileEntry.filesystem.name; |
| 121 var relativePath = $String.slice(fileEntry.fullPath, 1); | 24 var relativePath = $String.slice(fileEntry.fullPath, 1); |
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| 191 | 94 |
| 192 fileSystem.chooseFile = function() { | 95 fileSystem.chooseFile = function() { |
| 193 console.log("chrome.fileSystem.chooseFile is deprecated"); | 96 console.log("chrome.fileSystem.chooseFile is deprecated"); |
| 194 console.log("Please use chrome.fileSystem.chooseEntry instead"); | 97 console.log("Please use chrome.fileSystem.chooseEntry instead"); |
| 195 $Function.apply(fileSystem.chooseEntry, this, arguments); | 98 $Function.apply(fileSystem.chooseEntry, this, arguments); |
| 196 }; | 99 }; |
| 197 }); | 100 }); |
| 198 | 101 |
| 199 exports.bindFileEntryCallback = bindFileEntryCallback; | 102 exports.bindFileEntryCallback = bindFileEntryCallback; |
| 200 exports.binding = binding.generate(); | 103 exports.binding = binding.generate(); |
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