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| Viewing file: Select action/file-type: // xbDebug.js revision: 0.003 2002-02-26
/* ***** BEGIN LICENSE BLOCK *****
* Licensed under Version: MPL 1.1/GPL 2.0/LGPL 2.1
* Full Terms at /xbProjects-srce/license/mpl-tri-license.txt
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Netscape code.
*
* The Initial Developer of the Original Code is
* Netscape Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Bob Clary <bclary@netscape.com>
*
* ***** END LICENSE BLOCK ***** */
/*
ChangeLog:
2002-02-25: bclary - modified xbDebugTraceOject to make sure
that original versions of wrapped functions were not
rewrapped. This had caused an infinite loop in IE.
2002-02-07: bclary - modified xbDebug.prototype.close to not null
the debug window reference. This can cause problems with
Internet Explorer if the page is refreshed. These issues will
be addressed at a later date.
*/
function xbDebug()
{
this.on = false;
this.stack = new Array();
this.debugwindow = null;
this.execprofile = new Object();
}
xbDebug.prototype.push = function ()
{
this.stack[this.stack.length] = this.on;
this.on = true;
}
xbDebug.prototype.pop = function ()
{
this.on = this.stack[this.stack.length - 1];
--this.stack.length;
}
xbDebug.prototype.open = function ()
{
if (this.debugwindow && !this.debugwindow.closed)
this.close();
this.debugwindow = window.open('about:blank', 'DEBUGWINDOW', 'height=400,width=600,resizable=yes,scrollbars=yes');
this.debugwindow.title = 'xbDebug Window';
this.debugwindow.document.write('<html><head><title>xbDebug Window</title></head><body><h3>Javascript Debug Window</h3></body></html>');
this.debugwindow.focus();
}
xbDebug.prototype.close = function ()
{
if (!this.debugwindow)
return;
if (!this.debugwindow.closed)
this.debugwindow.close();
// bc 2002-02-07, other windows may still hold a reference to this: this.debugwindow = null;
}
xbDebug.prototype.dump = function (msg)
{
if (!this.on)
return;
if (!this.debugwindow || this.debugwindow.closed)
this.open();
this.debugwindow.document.write(msg + '<br>');
return;
}
var xbDEBUG = new xbDebug();
window.onunload = function () { xbDEBUG.close(); }
function xbDebugGetFunctionName(funcref)
{
if (!funcref)
{
return '';
}
if (funcref.name)
return funcref.name;
var name = funcref + '';
name = name.substring(name.indexOf(' ') + 1, name.indexOf('('));
funcref.name = name;
if (!name) alert('name not defined');
return name;
}
// emulate functionref.apply for IE mac and IE win < 5.5
function xbDebugApplyFunction(funcname, funcref, thisref, argumentsref)
{
var rv;
if (!funcref)
{
alert('xbDebugApplyFunction: funcref is null');
}
if (typeof(funcref.apply) != 'undefined')
return funcref.apply(thisref, argumentsref);
var applyexpr = 'thisref.xbDebug_orig_' + funcname + '(';
var i;
for (i = 0; i < argumentsref.length; i++)
{
applyexpr += 'argumentsref[' + i + '],';
}
if (argumentsref.length > 0)
{
applyexpr = applyexpr.substring(0, applyexpr.length - 1);
}
applyexpr += ')';
return eval(applyexpr);
}
function xbDebugCreateFunctionWrapper(scopename, funcname, precall, postcall)
{
var wrappedfunc;
var scopeobject = eval(scopename);
var funcref = scopeobject[funcname];
scopeobject['xbDebug_orig_' + funcname] = funcref;
wrappedfunc = function ()
{
var rv;
precall(scopename, funcname, arguments);
rv = xbDebugApplyFunction(funcname, funcref, scopeobject, arguments);
postcall(scopename, funcname, arguments, rv);
return rv;
};
if (typeof(funcref.constructor) != 'undefined')
wrappedfunc.constructor = funcref.constuctor;
if (typeof(funcref.prototype) != 'undefined')
wrappedfunc.prototype = funcref.prototype;
scopeobject[funcname] = wrappedfunc;
}
function xbDebugCreateMethodWrapper(contextname, classname, methodname, precall, postcall)
{
var context = eval(contextname);
var methodref = context[classname].prototype[methodname];
context[classname].prototype['xbDebug_orig_' + methodname] = methodref;
var wrappedmethod = function ()
{
var rv;
// eval 'this' at method run time to pick up reference to the object's instance
var thisref = eval('this');
// eval 'arguments' at method run time to pick up method's arguments
var argsref = arguments;
precall(contextname + '.' + classname, methodname, argsref);
rv = xbDebugApplyFunction(methodname, methodref, thisref, argsref);
postcall(contextname + '.' + classname, methodname, argsref, rv);
return rv;
};
return wrappedmethod;
}
function xbDebugPersistToString(obj)
{
var s = '';
var p;
if (obj == null)
return 'null';
switch(typeof(obj))
{
case 'number':
return obj;
case 'string':
return '"' + obj + '"';
case 'undefined':
return 'undefined';
case 'boolean':
return obj + '';
}
if (obj.constructor)
return '[' + xbDebugGetFunctionName(obj.constructor) + ']';
return null;
}
function xbDebugTraceBefore(scopename, funcname, funcarguments)
{
var i;
var s = '';
var execprofile = xbDEBUG.execprofile[scopename + '.' + funcname];
if (!execprofile)
execprofile = xbDEBUG.execprofile[scopename + '.' + funcname] = { started: 0, time: 0, count: 0 };
for (i = 0; i < funcarguments.length; i++)
{
s += xbDebugPersistToString(funcarguments[i]);
if (i < funcarguments.length - 1)
s += ', ';
}
xbDEBUG.dump('enter ' + scopename + '.' + funcname + '(' + s + ')');
execprofile.started = (new Date()).getTime();
}
function xbDebugTraceAfter(scopename, funcname, funcarguments, rv)
{
var i;
var s = '';
var execprofile = xbDEBUG.execprofile[scopename + '.' + funcname];
if (!execprofile)
xbDEBUG.dump('xbDebugTraceAfter: execprofile not created for ' + scopename + '.' + funcname);
else if (execprofile.started == 0)
xbDEBUG.dump('xbDebugTraceAfter: execprofile.started == 0 for ' + scopename + '.' + funcname);
else
{
execprofile.time += (new Date()).getTime() - execprofile.started;
execprofile.count++;
execprofile.started = 0;
}
for (i = 0; i < funcarguments.length; i++)
{
s += xbDebugPersistToString(funcarguments[i]);
if (i < funcarguments.length - 1)
s += ', ';
}
xbDEBUG.dump('exit ' + scopename + '.' + funcname + '(' + s + ')==' + xbDebugPersistToString(rv));
}
function xbDebugTraceFunction(scopename, funcname)
{
xbDebugCreateFunctionWrapper(scopename, funcname, xbDebugTraceBefore, xbDebugTraceAfter);
}
function xbDebugTraceObject(contextname, classname)
{
var classref = eval(contextname + '.' + classname);
var p;
var sp;
if (!classref || !classref.prototype)
return;
for (p in classref.prototype)
{
sp = p + '';
if (typeof(classref.prototype[sp]) == 'function' && (sp).indexOf('xbDebug_orig') == -1)
{
classref.prototype[sp] = xbDebugCreateMethodWrapper(contextname, classname, sp, xbDebugTraceBefore, xbDebugTraceAfter);
}
}
}
function xbDebugDumpProfile()
{
var p;
var execprofile;
var avg;
for (p in xbDEBUG.execprofile)
{
execprofile = xbDEBUG.execprofile[p];
avg = Math.round ( 100 * execprofile.time/execprofile.count) /100;
xbDEBUG.dump('Execution profile ' + p + ' called ' + execprofile.count + ' times. Total time=' + execprofile.time + 'ms. Avg Time=' + avg + 'ms.');
}
}
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