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/*
* Copyright 2009, 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.
*/
/**
* @fileoverview This file contains utility functions for the interactive
* sample runner.
*
*/
var ie;
var opera;
var safari;
var gecko;
if (typeof console == 'undefined') {
var console = {
log : function() {}
};
}
function readFile(relativePathToFile) {
var curPath = location.href;
var fileLoc = curPath.indexOf('file:///');
var lastSlash = curPath.lastIndexOf('/');
curPath = curPath.substring(0, lastSlash + 1);
if (fileLoc != -1) {
curPath = curPath.substring(fileLoc + 8);
}
var filepath = curPath + relativePathToFile;
filepath = filepath.replace(/\//g, '\\');
filepath = filepath.replace(/%20/g, ' ');
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
} catch (e) {
return null;
}
var file = Components.classes["@mozilla.org/file/local;1"].createInstance(
Components.interfaces.nsILocalFile);
file.initWithPath( filepath );
if ( file.exists() == false ) {
alert("File does not exist");
}
var is = Components.classes["@mozilla.org/network/file-input-stream;1"].
createInstance(Components.interfaces.nsIFileInputStream);
is.init( file,0x01, 00004, null);
var sis = Components.classes["@mozilla.org/scriptableinputstream;1"].
createInstance(Components.interfaces.nsIScriptableInputStream);
sis.init(is);
var output = sis.read( sis.available() );
return output;
}
/**
* Returns an XMLHttp instance to use for asynchronous
* downloading. This method will never throw an exception, but will
* return NULL if the browser does not support XmlHttp for any reason.
* @return {XMLHttpRequest|Null}
*/
function createXmlHttpRequest() {
try {
if (typeof ActiveXObject != 'undefined') {
return new ActiveXObject('Microsoft.XMLHTTP');
} else if (window["XMLHttpRequest"]) {
return new XMLHttpRequest();
}
} catch (e) {
changeStatus(e);
}
return null;
};
/**
* This functions wraps XMLHttpRequest open/send function.
* It lets you specify a URL and will call the callback if
* it gets a status code of 200.
* @param {String} url The URL to retrieve
* @param {Function} callback The function to call once retrieved.
*/
function downloadUrl(url, callback) {
var status = -1;
var request = createXmlHttpRequest();
if (!request) {
return false;
}
request.onreadystatechange = function() {
if (request.readyState == 4) {
try {
status = request.status;
} catch (e) {
// Usually indicates request timed out in FF.
}
if (status == 200) {
callback(request.responseText, request.status);
request.onreadystatechange = function() {};
}
}
};
request.open('GET', url, true);
try {
request.send(null);
} catch (e) {
changeStatus(e);
}
}
function deepObjCopy(dupeObj) {
var retObj = new Object();
if (typeof(dupeObj) == 'object') {
if (typeof(dupeObj.length) != 'undefined')
var retObj = new Array();
for (var objInd in dupeObj) {
if (typeof(dupeObj[objInd]) == 'object') {
retObj[objInd] = deepObjCopy(dupeObj[objInd]);
} else if (typeof(dupeObj[objInd]) == 'string') {
retObj[objInd] = dupeObj[objInd];
} else if (typeof(dupeObj[objInd]) == 'number') {
retObj[objInd] = dupeObj[objInd];
} else if (typeof(dupeObj[objInd]) == 'boolean') {
((dupeObj[objInd] == true) ?
retObj[objInd] = true : retObj[objInd] = false);
}
}
}
return retObj;
}
function singleLevelKeyCopy(dupeObj) {
var retObj = new Object();
for (var objInd in dupeObj) {
retObj[objInd] = true;
}
return retObj;
}
function browserFun() {
// Browser fun.
if (window.ActiveXObject) {
ie = this[window.XMLHttpRequest ? 'ie7' : 'ie6'] = true;
} else if (window.opera) {
opera = true;
} else if (document.childNodes && !document.all && !navigator.taintEnabled) {
safari = true;
} else if (document.getBoxObjectFor != null) {
gecko = true;
}
}
function _cel(name) {
return document.createElement(name);
}
function _gel(name) {
return document.getElementById(name);
}
function addEvent(a,b,c,d) {
if (a.addEventListener) {
a.addEventListener(b,c,d?true:false);
} else if(a.attachEvent) {
a.attachEvent('on'+b,c);
} else{
a['on'+b]=c;
}
}
browserFun();
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