1 files changed, 383 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/devtools/front_end/sdk/FileUtils.js b/chromium/third_party/WebKit/Source/devtools/front_end/sdk/FileUtils.js
new file mode 100644
index 00000000000..4f7a8d21209
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/devtools/front_end/sdk/FileUtils.js
@@ -0,0 +1,383 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+/**
+ * @interface
+ */
+WebInspector.OutputStreamDelegate = function()
+{
+}
+
+WebInspector.OutputStreamDelegate.prototype = {
+    onTransferStarted: function() { },
+
+    onTransferFinished: function() { },
+
+    /**
+     * @param {!WebInspector.ChunkedReader} reader
+     */
+    onChunkTransferred: function(reader) { },
+
+    /**
+     * @param {!WebInspector.ChunkedReader} reader
+     * @param {!Event} event
+     */
+    onError: function(reader, event) { },
+}
+
+/**
+ * @interface
+ */
+WebInspector.OutputStream = function()
+{
+}
+
+WebInspector.OutputStream.prototype = {
+    /**
+     * @param {string} data
+     * @param {function(!WebInspector.OutputStream)=} callback
+     */
+    write: function(data, callback) { },
+
+    close: function() { }
+}
+
+/**
+ * @interface
+ */
+WebInspector.ChunkedReader = function()
+{
+}
+
+WebInspector.ChunkedReader.prototype = {
+    /**
+     * @return {number}
+     */
+    fileSize: function() { },
+
+    /**
+     * @return {number}
+     */
+    loadedSize: function() { },
+
+    /**
+     * @return {string}
+     */
+    fileName: function() { },
+
+    cancel: function() { }
+}
+
+/**
+ * @constructor
+ * @implements {WebInspector.ChunkedReader}
+ * @param {!File} file
+ * @param {number} chunkSize
+ * @param {!WebInspector.OutputStreamDelegate} delegate
+ */
+WebInspector.ChunkedFileReader = function(file, chunkSize, delegate)
+{
+    this._file = file;
+    this._fileSize = file.size;
+    this._loadedSize = 0;
+    this._chunkSize = chunkSize;
+    this._delegate = delegate;
+    this._isCanceled = false;
+}
+
+WebInspector.ChunkedFileReader.prototype = {
+    /**
+     * @param {!WebInspector.OutputStream} output
+     */
+    start: function(output)
+    {
+        this._output = output;
+
+        this._reader = new FileReader();
+        this._reader.onload = this._onChunkLoaded.bind(this);
+        this._reader.onerror = this._delegate.onError.bind(this._delegate, this);
+        this._delegate.onTransferStarted();
+        this._loadChunk();
+    },
+
+    cancel: function()
+    {
+        this._isCanceled = true;
+    },
+
+    /**
+     * @return {number}
+     */
+    loadedSize: function()
+    {
+        return this._loadedSize;
+    },
+
+    /**
+     * @return {number}
+     */
+    fileSize: function()
+    {
+        return this._fileSize;
+    },
+
+    /**
+     * @return {string}
+     */
+    fileName: function()
+    {
+        return this._file.name;
+    },
+
+    /**
+     * @param {?Event} event
+     */
+    _onChunkLoaded: function(event)
+    {
+        if (this._isCanceled)
+            return;
+
+        if (event.target.readyState !== FileReader.DONE)
+            return;
+
+        var data = event.target.result;
+        this._loadedSize += data.length;
+
+        this._output.write(data);
+        if (this._isCanceled)
+            return;
+        this._delegate.onChunkTransferred(this);
+
+        if (this._loadedSize === this._fileSize) {
+            this._file = null;
+            this._reader = null;
+            this._output.close();
+            this._delegate.onTransferFinished();
+            return;
+        }
+
+        this._loadChunk();
+    },
+
+    _loadChunk: function()
+    {
+        var chunkStart = this._loadedSize;
+        var chunkEnd = Math.min(this._fileSize, chunkStart + this._chunkSize)
+        var nextPart = this._file.slice(chunkStart, chunkEnd);
+        this._reader.readAsText(nextPart);
+    }
+}
+
+/**
+ * @constructor
+ * @implements {WebInspector.ChunkedReader}
+ * @param {string} url
+ * @param {!WebInspector.OutputStreamDelegate} delegate
+ */
+WebInspector.ChunkedXHRReader = function(url, delegate)
+{
+    this._url = url;
+    this._delegate = delegate;
+    this._fileSize = 0;
+    this._loadedSize = 0;
+    this._isCanceled = false;
+}
+
+WebInspector.ChunkedXHRReader.prototype = {
+    /**
+     * @param {!WebInspector.OutputStream} output
+     */
+    start: function(output)
+    {
+        this._output = output;
+
+        this._xhr = new XMLHttpRequest();
+        this._xhr.open("GET", this._url, true);
+        this._xhr.onload = this._onLoad.bind(this);
+        this._xhr.onprogress = this._onProgress.bind(this);
+        this._xhr.onerror = this._delegate.onError.bind(this._delegate, this);
+        this._xhr.send(null);
+
+        this._delegate.onTransferStarted();
+    },
+
+    cancel: function()
+    {
+        this._isCanceled = true;
+        this._xhr.abort();
+    },
+
+    /**
+     * @return {number}
+     */
+    loadedSize: function()
+    {
+        return this._loadedSize;
+    },
+
+    /**
+     * @return {number}
+     */
+    fileSize: function()
+    {
+        return this._fileSize;
+    },
+
+    /**
+     * @return {string}
+     */
+    fileName: function()
+    {
+        return this._url;
+    },
+
+    /**
+     * @param {?Event} event
+     */
+    _onProgress: function(event)
+    {
+        if (this._isCanceled)
+            return;
+
+        if (event.lengthComputable)
+            this._fileSize = event.total;
+
+        var data = this._xhr.responseText.substring(this._loadedSize);
+        if (!data.length)
+            return;
+
+        this._loadedSize += data.length;
+        this._output.write(data);
+        if (this._isCanceled)
+            return;
+        this._delegate.onChunkTransferred(this);
+    },
+
+    /**
+     * @param {?Event} event
+     */
+    _onLoad: function(event)
+    {
+        this._onProgress(event);
+
+        if (this._isCanceled)
+            return;
+
+        this._output.close();
+        this._delegate.onTransferFinished();
+    }
+}
+
+/**
+ * @param {function(!File)} callback
+ * @return {!Node}
+ */
+WebInspector.createFileSelectorElement = function(callback) {
+    var fileSelectorElement = document.createElement("input");
+    fileSelectorElement.type = "file";
+    fileSelectorElement.style.display = "none";
+    fileSelectorElement.setAttribute("tabindex", -1);
+    fileSelectorElement.onchange = onChange;
+    function onChange(event)
+    {
+        callback(fileSelectorElement.files[0]);
+    };
+    return fileSelectorElement;
+}
+
+/**
+ * @constructor
+ * @implements {WebInspector.OutputStream}
+ */
+WebInspector.FileOutputStream = function()
+{
+}
+
+WebInspector.FileOutputStream.prototype = {
+    /**
+     * @param {string} fileName
+     * @param {function(boolean)} callback
+     */
+    open: function(fileName, callback)
+    {
+        this._closed = false;
+        this._writeCallbacks = [];
+        this._fileName = fileName;
+
+        /**
+         * @param {boolean} accepted
+         * @this {WebInspector.FileOutputStream}
+         */
+        function callbackWrapper(accepted)
+        {
+            if (accepted)
+                WebInspector.fileManager.addEventListener(WebInspector.FileManager.EventTypes.AppendedToURL, this._onAppendDone, this);
+            callback(accepted);
+        }
+        WebInspector.fileManager.save(this._fileName, "", true, callbackWrapper.bind(this));
+    },
+
+    /**
+     * @param {string} data
+     * @param {function(!WebInspector.OutputStream)=} callback
+     */
+    write: function(data, callback)
+    {
+        this._writeCallbacks.push(callback);
+        WebInspector.fileManager.append(this._fileName, data);
+    },
+
+    close: function()
+    {
+        this._closed = true;
+        if (this._writeCallbacks.length)
+            return;
+        WebInspector.fileManager.removeEventListener(WebInspector.FileManager.EventTypes.AppendedToURL, this._onAppendDone, this);
+        WebInspector.fileManager.close(this._fileName);
+    },
+
+    /**
+     * @param {!WebInspector.Event} event
+     */
+    _onAppendDone: function(event)
+    {
+        if (event.data !== this._fileName)
+            return;
+        var callback = this._writeCallbacks.shift();
+        if (callback)
+            callback(this);
+        if (!this._writeCallbacks.length) {
+            if (this._closed) {
+                WebInspector.fileManager.removeEventListener(WebInspector.FileManager.EventTypes.AppendedToURL, this._onAppendDone, this);
+                WebInspector.fileManager.close(this._fileName);
+            }
+        }
+    }
+}