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<?xml version="1.0"?>
<!--
/*
* This script was created by Erik Arvidsson (erik@eae.net)
* for WebFX (http://webfx.eae.net)
* Copyright 2001
*
* For usage see license at http://webfx.eae.net/license.html
*
* Created: 2001-12-06
*
*/
-->
<bindings xmlns="http://www.mozilla.org/xbl"
xmlns:html="http://www.w3.org/1999/xhtml">
<binding id="marquee" applyauthorstyles="true">
<content>
<html:span style="position: relative; white-space: nowrap; float: left; clear: both; width: auto; height: auto; display: inline; padding: 0; margin: 0; border: 0; border-bottom: 1px solid transparent; background: transparent;">
<children/>
</html:span>
</content>
<implementation>
<constructor>
//<![CDATA[
var element = this;
this.__marquee__ = new (function () {
// variable to use inside anonymous functions
var __marquee__ = this;
// define the properties and find the initial value
var _scrollDelay = Number( getPropAttr("scrollDelay", 85) );
var _scrollAmount = Number( getPropAttr("scrollAmount", 6) );
var _loop = Number( getPropAttr("loop", -1) );
var _direction = getPropAttr("direction", "left");
var _behavior = getPropAttr("behavior", "scroll");
var innerContainer = document.getAnonymousNodes(element)[0];
var isStopped = true;
var oldDirection = null;
var timer;
var reverse = false; // used in conjunction with alternate when going back
var inlineEventListeners = {}; // used to keep track of attrib/properties as event listeners
// init of inline event listeners done after this.?etInlineEventListener is defined
// returns the value of the dom attribute
function getPropAttr(sProp, vDefault) {
var domAttr = element.getAttribute(sProp)
if (domAttr != null && domAttr != "") return domAttr;
return vDefault;
}
// init and start once this js thread is done
window.setTimeout(function () {
init();
__marquee__.start();
}, 1);
// called when direction is changed and when the element is first initiated
function init() {
innerContainer.style.whiteSpace = (_direction == "left" || _direction == "right") ? "nowrap" : "inherit";
switch (_direction) {
case "left":
/* minus paddings and borders */
innerContainer.style.top = "0px";
if (oldDirection != "right") {
innerContainer.style.left = (_behavior == "scroll" ? element.offsetWidth : (element.offsetWidth >= innerContainer.offsetWidth ? element.offsetWidth - innerContainer.offsetWidth : 0)) + "px";
fireEvent("start");
}
break;
case "right":
innerContainer.style.top = "0px";
if (oldDirection != "left") {
innerContainer.style.left = (_behavior == "scroll" ? -innerContainer.offsetWidth : 0) + "px";
fireEvent("start");
}
break;
case "down":
innerContainer.style.left = "0px";
if (oldDirection != "up") {
innerContainer.style.top = (_behavior == "scroll" ? -innerContainer.offsetHeight : 0) + "px";
fireEvent("start");
}
break;
case "up":
innerContainer.style.left = "0px";
if (oldDirection != "down") {
innerContainer.style.top = (_behavior == "scroll" ? element.offsetHeight : (element.offsetHeight >= innerContainer.offsetHeight ? element.offsetHeight - innerContainer.offsetHeight: 0)) + "px";
fireEvent("start");
}
break;
}
};
this.start = function () {
if (isStopped) {
isStopped = false;
timer = window.setTimeout(updatePosition, _scrollDelay);
}
};
this.stop = function () {
if ( !isStopped ) {
isStopped = true;
if (timer != null)
window.clearTimeout(timer);
}
};
// This function handles the positioning of the content.
function updatePosition() {
if (isStopped) return;
if (_behavior == "scroll") {
switch (_direction) {
case "left":
var left = parseInt(innerContainer.style.left);//offsetLeft;
if (left + innerContainer.offsetWidth <= 0) {
innerContainer.style.left = element.offsetWidth + "px";
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("start");
}
else
innerContainer.style.left = left - _scrollAmount + "px";
break;
case "right":
var left = parseInt(innerContainer.style.left);//offsetLeft;
if (left >= element.offsetWidth) { // padding & border
innerContainer.style.left = -innerContainer.offsetWidth + "px";
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("start");
}
else
innerContainer.style.left = left + _scrollAmount + "px";
break;
case "up":
var top = parseInt(innerContainer.style.top);
if (top + innerContainer.offsetHeight <= 0) {
innerContainer.style.top = element.offsetHeight + "px";
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("start");
}
else
innerContainer.style.top = top - _scrollAmount + "px";
break;
case "down":
var top = parseInt(innerContainer.style.top);
if (top >= element.offsetHeight) { // padding & border
innerContainer.style.top = -innerContainer.offsetHeight + "px";
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("start");
}
else
innerContainer.style.top = top + _scrollAmount + "px";
break;
}
}
else { // _behavior == "alternate"
switch (_direction) {
case "left":
var left = parseInt(innerContainer.style.left);
var width = element.offsetWidth;
var innerWidth = innerContainer.offsetWidth;
if (left <= 0 && left + innerWidth <= width && !reverse) {
reverse = true;
fireEvent("bounce");
}
else if (left + innerWidth >= width && left >= 0 && reverse) {
reverse = false;
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("bounce");
}
var larger = innerWidth > width;
var max = larger ? 0 : width - innerWidth;
var min = !larger ? 0 : width - innerWidth;
innerContainer.style.left = Math.min(max, Math.max(min, left + (reverse ? 1 : -1) * _scrollAmount)) + "px";
break;
case "right":
var left = parseInt(innerContainer.style.left);
var width = element.offsetWidth;
var innerWidth = innerContainer.offsetWidth;
if (left <= 0 && left + innerWidth <= width && reverse) {
reverse = false;
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("bounce");
}
else if (left + innerWidth >= width && left >= 0 && !reverse) {
reverse = true;
fireEvent("bounce");
}
var larger = innerWidth > width;
var max = larger ? 0 : width - innerWidth;
var min = !larger ? 0 : width - innerWidth;
innerContainer.style.left = Math.min(max, Math.max(min, left + (!reverse ? 1 : -1) * _scrollAmount)) + "px";
break;
case "up":
var top = parseInt(innerContainer.style.top);
var height = element.offsetHeight;
var innerHeight = innerContainer.offsetHeight;
if (top <= 0 && top + innerHeight <= height && !reverse) {
reverse = true;
fireEvent("bounce");
}
else if (top + innerHeight >= height && top >= 0 && reverse) {
reverse = false;
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("bounce");
}
var larger = innerHeight > height;
var max = larger ? 0 : height - innerHeight;
var min = !larger ? 0 : height - innerHeight;
innerContainer.style.top = Math.min(max, Math.max(min, top + (reverse ? 1 : -1) * _scrollAmount)) + "px";
break;
case "down":
var top = parseInt(innerContainer.style.top);
var height = element.offsetHeight;
var innerHeight = innerContainer.offsetHeight;
if (top <= 0 && top + innerHeight <= height && reverse) {
reverse = false;
if (_loop == 1)
__marquee__.stop();
else if (_loop > 1)
_loop--;
if (_loop > 1 || _loop == -1)
fireEvent("bounce");
}
else if (top + innerHeight >= height && top >= 0 && !reverse) {
reverse = true;
fireEvent("bounce");
}
var larger = innerHeight > height;
var max = larger ? 0 : height - innerHeight;
var min = !larger ? 0 : height - innerHeight;
innerContainer.style.top = Math.min(max, Math.max(min, top + (reverse ? -1 : 1) * _scrollAmount)) + "px";
break;
}
}
timer = window.setTimeout(updatePosition, _scrollDelay);
}
function fireEvent(sType) {
var e = document.createEvent("Events");
e.initEvent(sType, false, false);
element.dispatchEvent(e);
}
this.getLoop = function () { return _loop; };
this.setLoop = function (nLoop) {
var n = Number(nLoop);
if (!isNaN(n) && n > 0) {
_loop = n;
element.__marquee__setAttribute("loop", n);
}
else
throw new Error("Invalid argument for Marquee::loop");
};
this.getScrollDelay = function () { return _scrollDelay; };
this.setScrollDelay = function (nScrollDelay) {
var n = Number(nScrollDelay);
if (!isNaN(n) && n > 0) {
_scrollDelay = n;
element.__marquee__setAttribute("scrollDelay", n);
}
else
throw new Error("Invalid argument for Marquee::scrollDelay");
};
this.getScrollAmount = function () { return _scrollAmount; };
this.setScrollAmount = function (nScrollAmount) {
var n = Number(nScrollAmount);
if (!isNaN(n) && n >= 0) {
_scrollAmount = n;
element.__marquee__setAttribute("scrollAmount", n);
}
else
throw new Error("Invalid argument for Marquee::scrollAmount");
};
this.getDirection = function () { return _direction; };
this.setDirection = function (sDirection) {
var s = String(sDirection).toLowerCase();
if (_direction == s) return;
switch (s) {
case "left":
case "right":
case "up":
case "down":
break;
default:
throw new Error("Invalid argument for Marquee::direction");
}
oldDirection = _direction;
_direction = s;
element.__marquee__setAttribute("direction", s);
init();
};
this.getBehavior = function () { return _behavior; };
this.setBehavior = function (sBehavior) {
var s = String(sBehavior).toLowerCase();
if (_behavior == s) return;
switch (s) {
case "scroll":
case "alternate":
break;
default:
throw new Error("Invalid argument for Marquee::behavior");
}
var oldBehavior = _behavior;
_behavior = s;
element.__marquee__setAttribute("behavior", s);
if (oldBehavior == "alternate" && s == "scroll" && reverse) { // reinit
init();
}
};
this.setInlineEventListener = function (sType, v) {
if ( !(sType in inlineEventListeners) ) {
element.removeEventListener(sType, inlineEventListeners[sType], false);
delete inlineEventListeners[sType];
}
var f;
if (typeof v == "function")
f = v;
else if (typeof v == "string")
f = new Function("event", v);
if (f != undefined) {
inlineEventListeners[sType] = f;
element.addEventListener(sType, f, false);
}
};
this.getInlineEventListener = function (sType) {
return inlineEventListeners[sType];
};
// init event listeners
var _onbounce = getPropAttr("onbounce", null);
var _onstart = getPropAttr("onstart", null);
if (_onbounce != null)
this.setInlineEventListener("bounce", _onbounce);
if (_onstart != null)
this.setInlineEventListener("start", _onstart);
});
// override setAttribute and getAttribute to allow XBL to work as one expects
element.__marquee__setAttribute = element.setAttribute; // backup original
element.setAttribute = function (sAttrName, sAttrValue) {
switch (sAttrName.toLowerCase()) {
case "loop":
this.__marquee__.setLoop(sAttrValue);
break;
case "scrollamount":
this.__marquee__.setScrollAmount(sAttrValue);
break;
case "scrolldelay":
this.__marquee__.setScrollDelay(sAttrValue);
break;
case "behavior":
this.__marquee__.setBehavior(sAttrValue);
break;
case "direction":
this.__marquee__.setDirection(sAttrValue);
break;
case "onbounce":
this.__marquee__.setInlineEventListener("bounce", sAttrValue);
break;
case "onstart":
this.__marquee__.setInlineEventListener("start", sAttrValue);
break;
}
return this.__marquee__setAttribute(sAttrName, sAttrValue);
};
element.__marquee__getAttribute = element.getAttribute; // backup original
element.getAttribute = function (sAttrName) {
switch (sAttrName.toLowerCase()) {
case "loop":
return this.__marquee__.getLoop();
case "scrollamount":
return this.__marquee__.getScrollAmount();
case "scrolldelay":
return this.__marquee__.getScrollDelay();
case "behavior":
return this.__marquee__.setBehavior();
case "direction":
return this.__marquee__.setDirection();
case "onbounce":
return this.__marquee__.getInlineEventListener("bounce");
case "onstart":
return this.__marquee__.getInlineEventListener("start");
}
return this.__marquee__getAttribute(sAttrName);
};
//]]>
</constructor>
<method name="stop">
<body>
this.__marquee__.stop();
</body>
</method>
<method name="start">
<body>
this.__marquee__.start();
</body>
</method>
<property name="loop"
onset="this.__marquee__.setLoop(val); return this.__marquee__.getLoop();"
onget="return this.__marquee__.getLoop();"/>
<property name="scrollAmount"
onset="this.__marquee__.setScrollAmount(val); return this.__marquee__.getScrollAmount();"
onget="return this.__marquee__.getScrollAmount();"/>
<property name="scrollDelay"
onset="this.__marquee__.setScrollDelay(val); return this.__marquee__.getScrollDelay();"
onget="return this.__marquee__.getScrollDelay();"/>
<property name="behavior"
onset="this.__marquee__.setBehavior(val); return this.__marquee__.getBehavior();"
onget="return this.__marquee__.getBehavior();"/>
<property name="direction"
onset="this.__marquee__.setDirection(val); return this.__marquee__.getDirection();"
onget="return this.__marquee__.getDirection();"/>
<property name="onbounce"
onset="this.__marquee__.setInlineEventListener('bounce', val); return this.__marquee__.getInlineEventListener('bounce');"
onget="return this.__marquee__.getInlineEventListener('bounce');"/>
<property name="onstart"
onset="this.__marquee__.setInlineEventListener('start', val); return this.__marquee__.getInlineEventListener('start');"
onget="return this.__marquee__.getInlineEventListener('start');"/>
</implementation>
</binding>
</bindings>
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