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348 lines
9.2 KiB
348 lines
9.2 KiB
<!-- ******************************************************** -->
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<!-- -->
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<!-- Copyright (c) 1999-2000 Microsoft Corporation -->
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<!-- -->
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<!-- scroll.htc -->
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<!-- -->
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<!-- Build Type : Checked -->
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<!-- Build Number : 0707 -->
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<!-- Build Date : 07/07/2000 -->
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<!-- ******************************************************* -->
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<HTC>
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<PUBLIC:COMPONENT tagName="scrollBarBehaviour">
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<PUBLIC:PROPERTY NAME="value" />
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<PUBLIC:PROPERTY NAME="smallChange" />
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<PUBLIC:PROPERTY NAME="LargeChange" />
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<PUBLIC:PROPERTY NAME="Max" />
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<PUBLIC:PROPERTY NAME="Min" />
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<PUBLIC:PROPERTY NAME="Orientation" />
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<PUBLIC:PROPERTY NAME="Enabled" />
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<PUBLIC:METHOD NAME="handleMouseDown" />
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<PUBLIC:METHOD NAME="scrollLoop" />
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<PUBLIC:METHOD NAME="calcParams" />
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<PUBLIC:METHOD NAME="removeFocus" />
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<PUBLIC:EVENT NAME="onchange" ID=changeID />
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<PUBLIC:ATTACH EVENT="onreadystatechange" ONEVENT="scrollBarLoad()"/>
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<PUBLIC:ATTACH EVENT="onmousedown" ONEVENT="handleMouseDown()"/>
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<PUBLIC:ATTACH EVENT="onmousemove" FOR='document' ONEVENT="drag()"/>
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<PUBLIC:ATTACH EVENT="onmouseup" FOR='document' ONEVENT="handleMouseUp()"/>
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<PUBLIC:ATTACH EVENT="onresize" ONEVENT="resize()"/>
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<PUBLIC:ATTACH EVENT="onpropertychange" ONEVENT="propertyChangeHandler()"/>
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<PUBLIC:ATTACH EVENT="onkeydown" ONEVENT="keyPressHandler()"/>
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<SCRIPT LANGUAGE="jscript">
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var dragThumb=false;
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var myheight;
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var divMax = 0;
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var divMin = 0;
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var started;
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var smallChange = 1;
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var LargeChange = new Number(1);
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var jump;
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var value = new Number(0);
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var Max = 1;
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var Min = 0;
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var oldHeight=1;
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var fLoaded = false;
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var thumbToValue = 0;
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var thumbTop = 0;
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var scrollOn = false;
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var elementTop = 0;
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var direction;
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var change;
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var scrollAreaAvailable = 0;
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var largeJump = 0;
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var smallJump = 0;
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var oldValue = 0;
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var i = 0;
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var value = 0;
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var Enabled = false;
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function scrollBarLoad()
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{
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if(element.readyState != 'complete')
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return;
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str = '<DIV id="scrollArea" onmousedown="this.parentElement.removeFocus()" onmouseup="this.parentElement.removeFocus()" style="position:relative;background-color:silver;height:100%;width:100%">' +
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'<BUTTON style="margin:0;padding:0;position:absolute;top:0%;height:17" id="upper" onmousedown="this.parentElement.parentElement.removeFocus()" onmouseup="this.parentElement.parentElement.removeFocus()" onmousemove="this.parentElement.parentElement.removeFocus()"><IMG id="uppergif" src="images/up.gif" onmousedown="this.parentElement.parentElement.parentElement.removeFocus()" onmousemove="this.parentElement.parentElement.parentElement.removeFocus()" onmouseup="this.parentElement.parentElement.parentElement.removeFocus()"></IMG></BUTTON>' +
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'<BUTTON style="position:relative;top:18;width:100%" onmousedown="this.parentElement.parentElement.removeFocus()" onmousemove="this.parentElement.parentElement.removeFocus()" id="thumb"></BUTTON>' +
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'</DIV>' +
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'<BUTTON style="position:absolute;left:0;top:18;height:17" onmousedown="this.parentElement.removeFocus()" onmouseup="this.parentElement.removeFocus()" onmousemove="this.parentElement.removeFocus()" id="lower"><IMG id="lowergif" src="images/dwn.gif" onmousemove="this.parentElement.parentElement.removeFocus()" onmouseup="this.parentElement.parentElement.removeFocus()" onmousedown="this.parentElement.parentElement.removeFocus()" ></IMG></BUTTON>'
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element.innerHTML = str;
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lower.style.setExpression ("top", "scrollArea.style.pixelHeight-upper.style.pixelHeight") ;
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calcParams();
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thumbTop = thumb.offsetTop;
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value = 0;
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}
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function keyPressHandler()
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{
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if(Enabled == true)
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enterForDrillDown();
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}
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function propertyChangeHandler()
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{
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if(window.event.propertyName == 'value')
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{
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if(oldValue != value)
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{
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temp = (value/Max)*scrollAreaAvailable + upper.style.pixelHeight;
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if(!isNaN(temp))
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{
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thumb.style.posTop = Math.min(temp,divMax);
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thumbTop = thumb.offsetTop;
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fireChangeEvent();
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oldValue == value;
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}
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}
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}
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else if( ( window.event.propertyName == 'LargeChange') || (window.event.propertyName == 'Max') )
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{
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calcParams();
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}
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else if ( window.event.propertyName == 'Enabled')
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{
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if(Enabled == true)
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{
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lowergif.src = "images/dwn.gif";
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uppergif.src = "images/up.gif";
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lower.disabled = false;
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upper.disabled = false;
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thumb.style.display = '';
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if(value == 0)
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{
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thumb.style.posTop = upper.style.pixelHeight;
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thumbTop = thumb.offsetTop;
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}
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}
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else
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{
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lowergif.src = "images/dwngray.gif";
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uppergif.src = "images/upgray.gif";
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lower.disabled = true;
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upper.disabled = true;
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thumb.style.display = 'none';
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}
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}
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}
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function resize()
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{
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if(element.readyState != 'complete')
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return;
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document.recalc(true);
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calcParams()
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if(oldHeight != 1)
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{
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if ( thumb.offsetTop != upper.style.pixelHeight)
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{
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temp = thumb.offsetTop * (scrollAreaAvailable/oldHeight)+upper.style.pixelHeight;
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if (temp > divMax)
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temp = divMax;
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if (temp < divMin)
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temp = divMin;
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thumb.style.posTop = temp;
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thumbTop = thumb.offsetTop;
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}
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}
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oldHeight = scrollAreaAvailable;
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}
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function handleMouseDown()
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{
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if(divMax <= 0)
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calcParams();
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if(dragThumb == false)
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{
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if ( (window.event.srcElement.id == 'thumb') && (window.event.type == "mousedown") )
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{
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dragThumb = true;
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elementTop = element.offsetTop
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started = thumb.offsetTop;
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oldValue = value;
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}
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else
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{
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if(Enabled == true)
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{
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scrollOn = true;
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handleMouseOver();
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}
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}
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}
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else
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{
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dragThumb = false;
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}
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}
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function handleMouseOver()
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{
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if(scrollOn == false)
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return;
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if(divMax <= 0)
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calcParams();
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if(window.event.srcElement.id == 'upper')
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{
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scrollLoop('up',smallJump,smallChange);
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}
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else if (window.event.srcElement.id == 'lower')
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{
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scrollLoop('down',smallJump,smallChange);
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}
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else if(window.event.srcElement.id == 'scrollArea')
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{
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scrollArea.style.backgroundColor= "black";
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if(window.event.offsetY < thumb.offsetTop)
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{
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scrollLoop('up',largeJump,LargeChange);
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}
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else
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{
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if(window.event.offsetY > (thumb.offsetTop + thumb.style.pixelHeight))
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{
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scrollLoop('down',largeJump,LargeChange);
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}
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}
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scrollArea.style.backgroundColor= "silver";
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}
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}
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function scrollLoop(direction,jump,change)
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{
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oldValue = value;
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//alert(jump + ":" + change + ":" + thumbTop);
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if(direction == 'up')
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{
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thumbTop = Math.max(thumbTop - jump,divMin);
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value = Math.max(value - change,Min);
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}
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else
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{
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thumbTop = Math.min(thumbTop + jump,divMax);
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value = Math.min(value + change,Max - LargeChange);
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}
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thumb.style.posTop=Math.floor(thumbTop);
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if(value < 0 )
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value = 0;
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if(oldValue != value)
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{
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fireChangeEvent();
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oldValue = value;
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}
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// window.status = thumbTop;
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}
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function drag()
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{
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var newPos = window.event.clientY - elementTop - myheight;
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if(dragThumb==true)
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{
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if(newPos < divMin)
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{
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if(newPos < (divMin - 40))
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{
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thumb.style.posTop = started;
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thumbTop = started;
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dragThumb = false;
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}
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else
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{
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thumb.style.posTop = Math.max(newPos,divMin);
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}
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}
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else
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{
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if(newPos > (divMax + 40))
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{
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thumb.style.posTop = started;
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thumbTop = started;
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dragThumb = false;
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}
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else
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{
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thumb.style.posTop= Math.min(newPos,divMax);
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}
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}
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thumbTop = thumb.offsetTop;
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if( (thumbTop + thumb.style.pixelHeight) == (scrollAreaAvailable + upper.style.pixelHeight) )
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value = Math.max(Max - LargeChange,0);
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else
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value = Math.round((thumbTop - upper.style.pixelHeight )* thumbToValue);
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if (value < 0)
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value = 0;
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}
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thumb.title = value+1;
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//window.status = "Value:"+value + "ThumbTop:" + thumb.offsetTop + "ScrollArea:" + scrollAreaAvailable;
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// + "ThumbToValue:" + thumbToValue + "ScreenArea:" + scrollArea.style.pixelHeight;
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//" OffsetY: " +window.event.offsetY+" clientY: " + window.event.clientY + " newPos : " + newPos;
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}
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function fireChangeEvent()
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{
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changeEvent = createEventObject();
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changeID.fire(changeEvent);
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}
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function handleMouseUp()
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{
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//thumbTop = thumb.offsetTop;
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if(dragThumb == true)
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{
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dragThumb = false;
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if(oldValue != value)
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{
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fireChangeEvent();
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oldValue = value;
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}
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}
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scrollOn = false;
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}
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function calcParams()
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{
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scrollAreaAvailable = scrollArea.style.pixelHeight-upper.style.pixelHeight-lower.style.pixelHeight;
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if(Max<LargeChange) Max = LargeChange;
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largeJump = (LargeChange/Max)*(scrollAreaAvailable);
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smallJump = (smallChange/Max)*(scrollAreaAvailable);
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thumb.style.pixelHeight = Math.max(largeJump,6);
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myheight = thumb.style.pixelHeight/2;
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divMax = lower.offsetTop - thumb.style.pixelHeight;
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divMin = upper.offsetTop + upper.style.pixelHeight;
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thumbToValue = Max/(scrollAreaAvailable);
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thumbTop = thumb.offsetTop;
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}
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function removeFocus() {
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if((scrollOn == true)||(dragThumb == true))
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scrollArea.focus();
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}
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</SCRIPT>
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</PUBLIC:COMPONENT>
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</HTC>
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