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ac_quicktime.js

/*

File: AC_QuickTime.js

Abstract: This file contains functions to generate OBJECT and EMBED tags for QuickTime content.

Version: <1.2>

Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

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In consideration of your agreement to abide by the following terms, and

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"Apple Software"), to use, reproduce, modify and redistribute the Apple

Software, with or without modifications, in source and/or binary forms;

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Neither the name, trademarks, service marks or logos of Apple Computer,

Inc. may be used to endorse or promote products derived from the Apple

Software without specific prior written permission from Apple.  Except

as expressly stated in this notice, no other rights or licenses, express

or implied, are granted by Apple herein, including but not limited to

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other works in which the Apple Software may be incorporated.

The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

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POSSIBILITY OF SUCH DAMAGE.

Copyright © 2006-2007 Apple Computer, Inc., All Rights Reserved

*/

/*

 * This file contains functions to generate OBJECT and EMBED tags for QuickTime content.

*/

/************** LOCALIZABLE GLOBAL VARIABLES ****************/

var gArgCountErr =  'The "%%" function requires an even number of arguments.'

                +   '\nArguments should be in the form "atttributeName", "attributeValue", ...';

/******************** END LOCALIZABLE **********************/

var gTagAttrs               = null;

var gQTGeneratorVersion     = 1.2;

var gQTBehaviorID           = "qt_event_source";

var gQTEventsEnabled        = false;

function AC_QuickTimeVersion()  { return gQTGeneratorVersion; }

function _QTComplain(callingFcnName, errMsg)

    errMsg = errMsg.replace("%%", callingFcnName);

    alert(errMsg);

function _QTIsMSIE()

    var ua = navigator.userAgent.toLowerCase();

    var msie = /msie/.test(ua) && !/opera/.test(ua);

    return msie;

function _QTGenerateBehavior()

    return objTag = '<!--[if IE]>'

                 + '<object id="' + gQTBehaviorID + '" classid="clsid:CB927D12-4FF7-4a9e-A169-56E4B8A75598"></object>'

                 + '<![endif]-->';

function _QTPageHasBehaviorObject(callingFcnName, args)

    var haveBehavior = false;

    var objects = document.getElementsByTagName('object');

    for ( var ndx = 0, obj; obj = objects[ndx]; ndx++ )

        if ( obj.getAttribute('classid') == "clsid:CB927D12-4FF7-4a9e-A169-56E4B8A75598" )

            if ( obj.getAttribute('id') == gQTBehaviorID )

                haveBehavior = false;

            break;

    return haveBehavior;

function _QTShouldInsertBehavior()

    var     shouldDo = false;

    if ( gQTEventsEnabled && _QTIsMSIE() && !_QTPageHasBehaviorObject() )

        shouldDo = true;

    return shouldDo;

function _QTAddAttribute(prefix, slotName, tagName)

    var     value;

    value = gTagAttrs[prefix + slotName];

    if ( null == value )

        value = gTagAttrs[slotName];

    if ( null != value )

        if ( 0 == slotName.indexOf(prefix) && (null == tagName) )

            tagName = slotName.substring(prefix.length);

        if ( null == tagName )

            tagName = slotName;

        return ' ' + tagName + '="' + value + '"';

    else

        return "";

function _QTAddObjectAttr(slotName, tagName)

    // don't bother if it is only for the embed tag

    if ( 0 == slotName.indexOf("emb#") )

        return "";

    if ( 0 == slotName.indexOf("obj#") && (null == tagName) )

        tagName = slotName.substring(4);

    return _QTAddAttribute("obj#", slotName, tagName);

function _QTAddEmbedAttr(slotName, tagName)

    // don't bother if it is only for the object tag

    if ( 0 == slotName.indexOf("obj#") )

        return "";

    if ( 0 == slotName.indexOf("emb#") && (null == tagName) )

        tagName = slotName.substring(4);

    return _QTAddAttribute("emb#", slotName, tagName);

function _QTAddObjectParam(slotName, generateXHTML)

    var     paramValue;

    var     paramStr = "";

    var     endTagChar = (generateXHTML) ? ' />' : '>';

    if ( -1 == slotName.indexOf("emb#") )

        // look for the OBJECT-only param first. if there is none, look for a generic one

        paramValue = gTagAttrs["obj#" + slotName];

        if ( null == paramValue )

            paramValue = gTagAttrs[slotName];

        if ( 0 == slotName.indexOf("obj#") )

            slotName = slotName.substring(4);

        if ( null != paramValue )

            paramStr = '<param name="' + slotName + '" value="' + paramValue + '"' + endTagChar;

    return paramStr;

function _QTDeleteTagAttrs()

    for ( var ndx = 0; ndx < arguments.length; ndx++ )

        var attrName = arguments[ndx];

        delete gTagAttrs[attrName];

        delete gTagAttrs["emb#" + attrName];

        delete gTagAttrs["obj#" + attrName];

// generate an embed and object tag, return as a string

function _QTGenerate(callingFcnName, generateXHTML, args)

    // is the number of optional arguments even?

    if ( args.length < 4 || (0 != (args.length % 2)) )

        _QTComplain(callingFcnName, gArgCountErr);

        return "";

    // allocate an array, fill in the required attributes with fixed place params and defaults

    gTagAttrs = new Object();

    gTagAttrs["src"] = args[0];

    gTagAttrs["width"] = args[1];

    gTagAttrs["height"] = args[2];

    gTagAttrs["classid"] = "clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B";

        //Impportant note: It is recommended that you use this exact classid in order to ensure a seamless experience for all viewers

    gTagAttrs["pluginspage"] = "http://www.apple.com/quicktime/download/";

    // set up codebase attribute with specified or default version before parsing args so

    //  anything passed in will override

    var activexVers = args[3]

    if ( (null == activexVers) || ("" == activexVers) )

        activexVers = "7,3,0,0";

    gTagAttrs["codebase"] = "http://www.apple.com/qtactivex/qtplugin.cab#version=" + activexVers;

    var attrName,

        attrValue;

    // add all of the optional attributes to the array

    for ( var ndx = 4; ndx < args.length; ndx += 2)

        attrName = args[ndx].toLowerCase();

        attrValue = args[ndx + 1];

        gTagAttrs[attrName] = attrValue;

        if ( ("postdomevents" == attrName) && (attrValue.toLowerCase() != "false") )

            gQTEventsEnabled = true;

            if ( _QTIsMSIE() )

                gTagAttrs["obj#style"] = "behavior:url(#" + gQTBehaviorID + ")";

    // init both tags with the required and "special" attributes

    var objTag =  '<object '

                    + _QTAddObjectAttr("classid")

                    + _QTAddObjectAttr("width")

                    + _QTAddObjectAttr("height")

                    + _QTAddObjectAttr("codebase")

                    + _QTAddObjectAttr("name")

                    + _QTAddObjectAttr("id")

                    + _QTAddObjectAttr("tabindex")

                    + _QTAddObjectAttr("hspace")

                    + _QTAddObjectAttr("vspace")

                    + _QTAddObjectAttr("border")

                    + _QTAddObjectAttr("align")

                    + _QTAddObjectAttr("class")

                    + _QTAddObjectAttr("title")

                    + _QTAddObjectAttr("accesskey")

                    + _QTAddObjectAttr("noexternaldata")

                    + _QTAddObjectAttr("obj#style")

                    + '>'

                    + _QTAddObjectParam("src", generateXHTML);

    var embedTag = '<embed '

                    + _QTAddEmbedAttr("src")

                    + _QTAddEmbedAttr("width")

                    + _QTAddEmbedAttr("height")

                    + _QTAddEmbedAttr("pluginspage")

                    + _QTAddEmbedAttr("name")

                    + _QTAddEmbedAttr("id")

                    + _QTAddEmbedAttr("align")

                    + _QTAddEmbedAttr("tabindex");

    // delete the attributes/params we have already added

    _QTDeleteTagAttrs("src","width","height","pluginspage","classid","codebase","name","tabindex",

                    "hspace","vspace","border","align","noexternaldata","class","title","accesskey","id","style");

    // and finally, add all of the remaining attributes to the embed and object

    for ( var attrName in gTagAttrs )

        attrValue = gTagAttrs[attrName];

        if ( null != attrValue )

            embedTag += _QTAddEmbedAttr(attrName);

            objTag += _QTAddObjectParam(attrName, generateXHTML);

    // end both tags, we're done

    return objTag + embedTag + '></em' + 'bed></ob' + 'ject' + '>';

// return the object/embed as a string

function QT_GenerateOBJECTText()

    var txt = _QTGenerate("QT_GenerateOBJECTText", false, arguments);

    if ( _QTShouldInsertBehavior() )

        txt = _QTGenerateBehavior() + txt;

    return txt;

function QT_GenerateOBJECTText_XHTML()

    var txt = _QTGenerate("QT_GenerateOBJECTText_XHTML", true, arguments);

    if ( _QTShouldInsertBehavior() )

        txt = _QTGenerateBehavior() + txt;

    return txt;

function QT_WriteOBJECT()

    var txt = _QTGenerate("QT_WriteOBJECT", false, arguments);

    if ( _QTShouldInsertBehavior() )

        document.writeln(_QTGenerateBehavior());

    document.writeln(txt);

function QT_WriteOBJECT_XHTML()

    var txt = _QTGenerate("QT_WriteOBJECT_XHTML", true, arguments);

    if ( _QTShouldInsertBehavior() )

        document.writeln(_QTGenerateBehavior());

    document.writeln(txt);

function QT_GenerateBehaviorOBJECT()

    return _QTGenerateBehavior();

function QT_ReplaceElementContents()

    var element = arguments[0];

    var args = [];

    // copy all other arguments we want to pass through to the fcn

    for ( var ndx = 1; ndx < arguments.length; ndx++ )

        args.push(arguments[ndx]);

    var txt = _QTGenerate("QT_ReplaceElementContents", false, args);

    if ( txt.length > 0 )

        element.innerHTML = txt;

function QT_ReplaceElementContents_XHTML()

    var element = arguments[0];

    var args = [];

    // copy all other arguments we want to pass through to the fcn

    for ( var ndx = 1; ndx < arguments.length; ndx++ )

        args.push(arguments[ndx]);

    var txt = _QTGenerate("QT_ReplaceElementContents_XHTML", true, args);

    if ( txt.length > 0 )

        element.innerHTML = txt;

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