OSCON/WRTKit/UI/Ajax.js
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     1 /*
       
     2 � Copyright 2008 Nokia Corporation. All rights reserved.
       
     3 
       
     4 IMPORTANT:  The Nokia software ("WRTKit and Example Widget files") is supplied to you by Nokia
       
     5 Corporation (�Nokia�) in consideration of your agreement to the following terms. Your use, installation
       
     6 and/or redistribution of the WRTKit and Example Widget files constitutes acceptance of these terms. If
       
     7 you do not agree with these terms, please do not use, install, or redistribute the WRTKit and Example
       
     8 Widget files.
       
     9 
       
    10 In consideration of your agreement to abide by the following terms, and subject to these terms, Nokia
       
    11 grants you a personal, non-exclusive license, under Nokia�s copyrights in the WRTKit and Example
       
    12 Widget files, to use, reproduce, and redistribute the WRTKit and Example files, in text form (for HTML,
       
    13 CSS, or JavaScript files) or binary form (for associated images), for the sole purpose of creating S60
       
    14 Widgets.
       
    15 
       
    16 If you redistribute the WRTKit and Example files, you must retain this entire notice in all such
       
    17 redistributions of the WRTKit and Example files.
       
    18 
       
    19 You may not use the name, trademarks, service marks or logos of Nokia to endorse or promote products
       
    20 that include the WRTKit and Example files without the prior written explicit agreement with Nokia.
       
    21 Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by
       
    22 Nokia herein, including but not limited to any patent rights that may be infringed by your products that
       
    23 incorporate the WRTKit and Example files or by other works in which the WRTKit and Example files
       
    24 may be incorporated.
       
    25 
       
    26 The WRTKit and Example files are provided on an "AS IS" basis.  NOKIA MAKES NO
       
    27 WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
       
    28 WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
       
    29 PARTICULAR PURPOSE, REGARDING THE EXAMPLES OR ITS USE AND OPERATION
       
    30 ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
       
    31 
       
    32 IN NO EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
       
    33 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
       
    34 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
       
    35 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, AND/OR
       
    36 DISTRIBUTION OF THE EXAMPLES, HOWEVER CAUSED AND WHETHER UNDER THEORY
       
    37 OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE,
       
    38 EVEN IF NOKIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
       
    39 
       
    40 */
       
    41 
       
    42 ///////////////////////////////////////////////////////////////////////////////
       
    43 // Ajax utility calss to create XmlHttpRequest object
       
    44 function Ajax() 
       
    45 {
       
    46 	//	xmlHttpRequest object	
       
    47 	var request = null;
       
    48 
       
    49     // branch for native XMLHttpRequest object
       
    50     if(window.XMLHttpRequest && !(window.ActiveXObject)) {
       
    51     	try 
       
    52 		{
       
    53 			request = new XMLHttpRequest();
       
    54 			try
       
    55 			{
       
    56 				//	attach the Bypass code, if the browser is firefox
       
    57 				if(netscape.security.PrivilegeManager.enablePrivilege)
       
    58 				{
       
    59 					//	duplicate the function
       
    60 					request._open = request.open;
       
    61 					
       
    62 					//	redefine the function definition
       
    63 					request.open = function(method, url, flag)
       
    64 					{
       
    65 						try
       
    66 						{
       
    67 							// Enable Universal Browser Read
       
    68 							netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
       
    69 
       
    70 							//	call the native XmlHttpRequest.open method
       
    71 							this._open(method, url, flag);
       
    72 						}catch(e)
       
    73 						{
       
    74 							//	call the native XmlHttpRequest.open method
       
    75 							this._open(method, url, flag);
       
    76 						}
       
    77 					}
       
    78 				}
       
    79 			}
       
    80 			catch(e)
       
    81 			{
       
    82 				//	eatup all exceptions
       
    83 			}
       
    84 		} 
       
    85 		catch(e) {
       
    86 			request = null;
       
    87         }
       
    88     // branch for IE/Windows ActiveX version
       
    89     } else if(window.ActiveXObject) {
       
    90        	try {
       
    91         	request = new ActiveXObject("Msxml2.XMLHTTP");
       
    92       	} catch(e) {
       
    93         	try {
       
    94           		request = new ActiveXObject("Microsoft.XMLHTTP");
       
    95         	} catch(e) {
       
    96           		alert('Failed to create XmlHttprequest');
       
    97 				return null;
       
    98         	}
       
    99 		}
       
   100     }
       
   101 	
       
   102 	return (request);
       
   103 }