end - 1.
- */
- var slice = function slice(blob, start, end) {
-
- // Use prefixed implementations if necessary
- var sliceImplementation = (
- blob.slice
- || blob.webkitSlice
- || blob.mozSlice
- ).bind(blob);
-
- var length = end - start;
-
- // The old Blob.slice() was length-based (not end-based). Try the
- // length version first, if the two calls are not equivalent.
- if (length !== end) {
-
- // If the result of the slice() call matches the expected length,
- // trust that result. It must be correct.
- var sliceResult = sliceImplementation(start, length);
- if (sliceResult.size === length)
- return sliceResult;
-
- }
-
- // Otherwise, use the most-recent standard: end-based slice()
- return sliceImplementation(start, end);
-
- };
-
- /**
- * Sends the contents of the given blob over the underlying stream.
- *
- * @param {Blob} blob
- * The blob to send.
- */
- this.sendBlob = function sendBlob(blob) {
-
- var offset = 0;
- var reader = new FileReader();
-
- /**
- * Reads the next chunk of the blob provided to
- * [sendBlob()]{@link Guacamole.BlobWriter#sendBlob}. The chunk itself
- * is read asynchronously, and will not be available until
- * reader.onload fires.
- *
- * @private
- */
- var readNextChunk = function readNextChunk() {
-
- // If no further chunks remain, inform of completion and stop
- if (offset >= blob.size) {
-
- // Fire completion event for completed blob
- if (guacWriter.oncomplete)
- guacWriter.oncomplete(blob);
-
- // No further chunks to read
- return;
-
- }
-
- // Obtain reference to next chunk as a new blob
- var chunk = slice(blob, offset, offset + arrayBufferWriter.blobLength);
- offset += arrayBufferWriter.blobLength;
-
- // Attempt to read the blob contents represented by the blob into
- // a new array buffer
- reader.readAsArrayBuffer(chunk);
-
- };
-
- // Send each chunk over the stream, continue reading the next chunk
- reader.onload = function chunkLoadComplete() {
-
- // Send the successfully-read chunk
- arrayBufferWriter.sendData(reader.result);
-
- // Continue sending more chunks after the latest chunk is
- // acknowledged
- arrayBufferWriter.onack = function sendMoreChunks(status) {
-
- if (guacWriter.onack)
- guacWriter.onack(status);
-
- // Abort transfer if an error occurs
- if (status.isError())
- return;
-
- // Inform of blob upload progress via progress events
- if (guacWriter.onprogress)
- guacWriter.onprogress(blob, offset - arrayBufferWriter.blobLength);
-
- // Queue the next chunk for reading
- readNextChunk();
-
- };
-
- };
-
- // If an error prevents further reading, inform of error and stop
- reader.onerror = function chunkLoadFailed() {
-
- // Fire error event, including the context of the error
- if (guacWriter.onerror)
- guacWriter.onerror(blob, offset, reader.error);
-
- };
-
- // Begin reading the first chunk
- readNextChunk();
-
- };
-
- /**
- * Signals that no further text will be sent, effectively closing the
- * stream.
- */
- this.sendEnd = function sendEnd() {
- arrayBufferWriter.sendEnd();
- };
-
- /**
- * Fired for received data, if acknowledged by the server.
- *
- * @event
- * @param {Guacamole.Status} status
- * The status of the operation.
- */
- this.onack = null;
-
- /**
- * Fired when an error occurs reading a blob passed to
- * [sendBlob()]{@link Guacamole.BlobWriter#sendBlob}. The transfer for the
- * the given blob will cease, but the stream will remain open.
- *
- * @event
- * @param {Blob} blob
- * The blob that was being read when the error occurred.
- *
- * @param {Number} offset
- * The offset of the failed read attempt within the blob, in bytes.
- *
- * @param {DOMError} error
- * The error that occurred.
- */
- this.onerror = null;
-
- /**
- * Fired for each successfully-read chunk of data as a blob is being sent
- * via [sendBlob()]{@link Guacamole.BlobWriter#sendBlob}.
- *
- * @event
- * @param {Blob} blob
- * The blob that is being read.
- *
- * @param {Number} offset
- * The offset of the read that just succeeded.
- */
- this.onprogress = null;
-
- /**
- * Fired when a blob passed to
- * [sendBlob()]{@link Guacamole.BlobWriter#sendBlob} has finished being
- * sent.
- *
- * @event
- * @param {Blob} blob
- * The blob that was sent.
- */
- this.oncomplete = null;
-
-};
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-var Guacamole = Guacamole || {};
-
-/**
- * Guacamole protocol client. Given a {@link Guacamole.Tunnel},
- * automatically handles incoming and outgoing Guacamole instructions via the
- * provided tunnel, updating its display using one or more canvas elements.
- *
- * @constructor
- * @param {Guacamole.Tunnel} tunnel The tunnel to use to send and receive
- * Guacamole instructions.
- */
-Guacamole.Client = function(tunnel) {
-
- var guac_client = this;
-
- var STATE_IDLE = 0;
- var STATE_CONNECTING = 1;
- var STATE_WAITING = 2;
- var STATE_CONNECTED = 3;
- var STATE_DISCONNECTING = 4;
- var STATE_DISCONNECTED = 5;
-
- var scaleValue = 1
-
- var currentState = STATE_IDLE;
-
- var currentTimestamp = 0;
- var pingInterval = null;
-
- /**
- * Translation from Guacamole protocol line caps to Layer line caps.
- * @private
- */
- var lineCap = {
- 0: "butt",
- 1: "round",
- 2: "square"
- };
-
- /**
- * Translation from Guacamole protocol line caps to Layer line caps.
- * @private
- */
- var lineJoin = {
- 0: "bevel",
- 1: "miter",
- 2: "round"
- };
-
- /**
- * The underlying Guacamole display.
- *
- * @private
- * @type {Guacamole.Display}
- */
- var display = new Guacamole.Display();
-
- /**
- * All available layers and buffers
- *
- * @private
- * @type {Object.