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PC World Plus! (NZ) 2000 September
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glossary.js
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2000-06-15
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/* Localize the following variables */
/* Start Localize */
var sErr_EntryNotFound = "<P STYLE='color:red'><B> Definition not found.</B></P>";
var sGlossaryPopUpTitle = "Glossary Term";
/* End Localize */
//----------------------------------------------------------------------------------
// Global variables
var bDataSetComplete = false; // flag to ensure the user will not access DB before load complete
var sDBGlossary = "../dbGlossary.csv"; // path to glossary DB file
var sPopUpBGColor = "lightblue"; // popup background color
var sPopUpShadowBGColor = "lightblue"; // popup background color
var oBInfo = GetBrowserInfo(); // browser information
// Call Intialize PopUp Glossary
Initialize();
// Main popup glossary subroutine, gets called everytime the user clicks on the on a glossary keyword
function Glossary(oObj)
{
// If DB not loaded exit
// Removing safety check for IE4, under IE4 on WinNT4 TDC.ondatasetcomplete event never fires.
// Safety will only work for IE5
if(oBInfo.GB && bDataSetComplete == false) return;
// Reposition pop-up tray
PosPopUpTray(idPopUpTray);
// Get keyword definition from glossary database
idPopUp.innerHTML = GetKeyDef(dbGlossary.recordset, oObj.RID);
// Set shadow
idPopUpShadow.innerHTML = idPopUp.innerHTML
// Display pop-up glossary
DspPopUp(1);
}
// Method reposition glossary popup tray underneath the glossary keyword.
function PosPopUpTray(oObj)
{
var offSetLeft = window.event.clientX + document.body.scrollLeft ;
var offSetTop = window.event.clientY + document.body.scrollTop ;
var offSetWidth = document.body.offsetWidth;
// Avoid runing off to the right of the screen
if (((offSetLeft + 430) > offSetWidth) && (offSetWidth > 430 ))
{
offSetLeft = offSetWidth - parseInt(oObj.style.width) - 34 ;
}
oObj.style.left = offSetLeft; // set new x coordinate
oObj.style.top = offSetTop; // set new y coordinate
}
// Method obtains keyword deffinition
function GetKeyDef(oRecordSet, sKeyWord)
{
var sDef = "";
oRecordSet.MoveFirst();
for(var i=0; i < oRecordSet.RecordCount; i++) // >
{
// If we found our keyword in the record set extract deffinition and exit
if(sKeyWord == oRecordSet.fields.item('rid').value)
{
sDef = "<P><B>" + oRecordSet.fields.item('key').value + "</B><BR>"
sDef = sDef + oRecordSet.fields.item('def').value + "</P>"
return sDef;
}
// Advance to next element
oRecordSet.MoveNext();
}
sDef = sErr_EntryNotFound ;
return sDef;
}
// Method turns pop-up tray display on/off
function DspPopUp(nState)
{
if(nState == 0)
{
idPopUpTray.style.display = "none";
}
else if(nState == 1)
{
idPopUpTray.style.display = "";
fadeIn(idPopUp);
idPopUpShadow.focus();
}
}
// Method hides pop-up glossary
function HidePopUp()
{
if(window.event.srcElement == null)
{
DspPopUp(0);
}
else if (window.event.srcElement.id != "idGlossary")
{
DspPopUp(0);
}
}
// Method fades in the pop-up
function fadeIn(oObj)
{
if(!oBInfo.GB) return ;
oObj.style.filter="blendTrans(duration=.30";
// make sure filter is not already playing
if (oObj.filters.blendTrans.status != 2)
{
oObj.style.visibility="hidden";
oObj.filters.blendTrans.apply();
oObj.style.visibility="visible";
oObj.filters.blendTrans.play();
}
}
// Set all objects required for the pop-up glossary
function Initialize()
{
// Create style string
var sStyle = '' +
'<STYLE> #idGlossary{cursor: hand; color: green; text-decoration: underline;}</STYLE>';
// Create Glossary onclick event handler
var sOnClickEvent = '' +
'<SCR' + 'IPT LANGUAGE="JScript" FOR="idGlossary" EVENT="onclick">' +
' Glossary(this);' +
'</SCR' + 'IPT>' ;
// Create Glossary onmouseover event handler
var sOnMouseOverEvent = '' +
'<SCR' + 'IPT LANGUAGE="JScript" FOR="idGlossary" EVENT="onmouseover">' +
' this.title = "' + sGlossaryPopUpTitle + '";' +
'</SCR' + 'IPT>' ;
// Create TBDCtl string
var sObj = '' +
'<OBJECT ID="dbGlossary" CLASSID="clsid:333C7BC4-460F-11D0-BC04-0080C7055A83" STYLE="height: 0; width: 0;" ondatasetcomplete="bDataSetComplete = true">' +
' <PARAM NAME="DataURL" VALUE="' + sDBGlossary + '">' +
' <PARAM NAME="UseHeader" VALUE="True">' +
' <PARAM NAME="TextQualifier" VALUE="|">' +
'</OBJECT>' ;
// Create event handlers string
var sEvtHandle = '' +
'<SCR' + 'IPT LANGUAGE="JScript">' +
' document.onmousedown = HidePopUp;' +
' window.onresize = HidePopUp;' +
'</SCR' + 'IPT >';
// Create popup string , lemonchiffon
var sPopUp = '' +
'<DIV ID="idPopUpTray" STYLE="display: none; z-index:1; width:400; height:10; position:absolute; padding: 0; border-style: inset; border-width:0;">' +
' <DIV ID="idPopUp" STYLE="z-index:3; width:400; height: 10; position:absolute; font:8pt Tahoma; line-height: 8pt; background-color:' + sPopUpBGColor + '; top: 0; left: 0; padding: 7; margin: 6; border-style: inset; border-left-width: 1; border-top-width: 1; border-right-width: 2; border-bottom-width: 2; border-right-color: black; border-bottom-color: black; "> </DIV>' +
' <DIV ID="idPopUpShadow" STYLE="z-index:2; width:400; height: 10; position:absolute; font:8pt Tahoma; line-height: 8pt; background-color:' + sPopUpShadowBGColor + '; color:' + sPopUpShadowBGColor + ';top: 6; left:-6; padding: 7; margin: 6; border-style: solid; border-left-width: 1; border-top-width: 1; border-right-width: 2; border-bottom-width: 2; border-right-color: black; border-color:' + sPopUpShadowBGColor + '; filter:alpha(opacity=50, style=0);"> </DIV>' +
'</DIV>' ;
// Write objects to document
window.self.document.write(sStyle);
window.self.document.write(sOnClickEvent);
window.self.document.write(sOnMouseOverEvent);
window.self.document.write(sObj);
window.self.document.write(sPopUp);
window.self.document.write(sEvtHandle);
}
// Container for browser/os information
function BrowserInfo()
{
this.Type = "";
this.Ver = 0;
this.Plat = "";
this.GB = false;
}
// Determines browser/os platforms
// Question: Will this code work with localized versions of the browser ??
// ToDo: Test the code to see if it works under Netscape. On mac OS.
function GetBrowserInfo()
{
var brw = new BrowserInfo;
sUA = window.navigator.appVersion;
if (parseInt(sUA.indexOf("MSIE ")) >= 0) // Check if IE
{
brw.Type = "IE";
brw.Ver = parseInt(sUA.substring(sUA.indexOf("MSIE ")+5,sUA.indexOf (".",sUA.indexOf("MSIE "))));
if (sUA.lastIndexOf("Win") >= 0)
brw.Plat = "Win";
}
else if(parseInt(navigator.appName.lastIndexOf("Netscape"))>=0)
{
brw.Type = "Nav";
brw.Ver = parseInt(sUA.substring(0, sUA.indexOf('.')));
}
if (sUA.indexOf("Mac") != -1) {brw.Plat = "Mac"};
brw.GB = (brw.Type == "IE" && brw.Ver >= 5 && brw.Plat == "Win");
return brw;
}