closing panels
closing panels
Good Morning,
I am new to this so here is goes, I have recently placed a accordion
menu system onto my site but am having problems with it. The menu open/
closes fine when clicking on the main headings and all information is
displayed correctly within it, but when a sub menu is selected it
closes the current panel so the user has to keep re-opening the panel
to get back to the options. This is really annoying I wondered if
anyone had any clues to why this would keep happening as I need to
keep the panel open until the user has finished selecting the correct
sub menu option.
Below is the code I have used for the menu
var Spry;
if (!Spry) Spry = {};
if (!Spry.Widget) Spry.Widget = {};
Spry.Widget.Accordion = function(element, opts)
{
this.element = this.getElement(element);
this.defaultPanel = 0;
this.hoverClass = "AccordionPanelTabHover";
this.openClass = "AccordionPanelOpen";
this.closedClass = "AccordionPanelClosed";
this.focusedClass = "AccordionFocused";
this.enableAnimation = true;
this.enableKeyboardNavigation = true;
this.currentPanel = null;
this.animator = null;
this.hasFocus = null;
this.duration = 500;
this.previousPanelKeyCode = Spry.Widget.Accordion.KEY_UP;
this.nextPanelKeyCode = Spry.Widget.Accordion.KEY_DOWN;
this.useFixedPanelHeights = false;
this.fixedPanelHeight = 0;
Spry.Widget.Accordion.setOptions(this, opts, true);
// Unfortunately in some browsers like Safari, the Stylesheets our
// page depends on may not have been loaded at the time we are
called.
// This means we have to defer attaching our behaviors until after
the
// onload event fires, since some of our behaviors rely on dimensions
// specified in the CSS.
if (Spry.Widget.Accordion.onloadDidFire)
this.attachBehaviors();
else
Spry.Widget.Accordion.loadQueue.push(this);
};
Spry.Widget.Accordion.onloadDidFire = false;
Spry.Widget.Accordion.loadQueue = [];
Spry.Widget.Accordion.addLoadListener = function(handler)
{
if (typeof window.addEventListener != 'undefined')
window.addEventListener('load', handler, false);
else if (typeof document.addEventListener != 'undefined')
document.addEventListener('load', handler, false);
else if (typeof window.attachEvent != 'undefined')
window.attachEvent('onload', handler);
};
Spry.Widget.Accordion.processLoadQueue = function(handler)
{
Spry.Widget.Accordion.onloadDidFire = true;
var q = Spry.Widget.Accordion.loadQueue;
var qlen = q.length;
for (var i = 0; i < qlen; i++)
q[i].attachBehaviors();
};
Spry.Widget.Accordion.addLoadListener(Spry.Widget.Accordion.processLoadQueue);
Spry.Widget.Accordion.prototype.getElement = function(ele)
{
if (ele && typeof ele == "string")
return document.getElementById(ele);
return ele;
};
Spry.Widget.Accordion.prototype.addClassName = function(ele,
className)
{
if (!ele || !className || (ele.className && ele.className.search(new
RegExp("\\b" + className + "\\b")) != -1))
return;
ele.className += (ele.className ? " " : "") + className;
};
Spry.Widget.Accordion.prototype.removeClassName = function(ele,
className)
{
if (!ele || !className || (ele.className && ele.className.search(new
RegExp("\\b" + className + "\\b")) == -1))
return;
ele.className = ele.className.replace(new RegExp("\\s*\\b" +
className + "\\b", "g"), "");
};
Spry.Widget.Accordion.setOptions = function(obj, optionsObj,
ignoreUndefinedProps)
{
if (!optionsObj)
return;
for (var optionName in optionsObj)
{
if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
continue;
obj[optionName] = optionsObj[optionName];
}
};
Spry.Widget.Accordion.prototype.onPanelTabMouseOver = function(panel)
{
if (panel)
this.addClassName(this.getPanelTab(panel), this.hoverClass);
};
Spry.Widget.Accordion.prototype.onPanelTabMouseOut = function(panel)
{
if (panel)
this.removeClassName(this.getPanelTab(panel), this.hoverClass);
};
Spry.Widget.Accordion.prototype.openPanel = function(panel)
{
var panelA = this.currentPanel;
var panelB = panel;
if (!panelB || panelA == panelB)
return;
var contentA;
if( panelA )
contentA = this.getPanelContent(panelA);
var contentB = this.getPanelContent(panelB);
if (! contentB)
return;
if (this.useFixedPanelHeights && !this.fixedPanelHeight)
{
this.fixedPanelHeight = (contentA.offsetHeight) ?
contentA.offsetHeight : contentA.scrollHeight;
}
if (this.enableAnimation)
{
if (this.animator)
this.animator.stop();
this.animator = new Spry.Widget.Accordion.PanelAnimator(this,
panelB, { duration: this.duration });
this.animator.start();
}
else
{
if(contentA)
contentA.style.height = "0px";
contentB.style.height = (this.useFixedPanelHeights ?
this.fixedPanelHeight : contentB.scrollHeight) + "px";
}
if(panelA)
{
this.removeClassName(panelA, this.openClass);
this.addClassName(panelA, this.closedClass);
}
this.removeClassName(panelB, this.closedClass);
this.addClassName(panelB, this.openClass);
this.currentPanel = panelB;
};
Spry.Widget.Accordion.prototype.openNextPanel = function()
{
var panels = this.getPanels();
var curPanelIndex = this.getCurrentPanelIndex();
if( panels && curPanelIndex >= 0 && (curPanelIndex+1) <
panels.length )
this.openPanel(panels[curPanelIndex+1]);
};
Spry.Widget.Accordion.prototype.openPreviousPanel = function()
{
var panels = this.getPanels();
var curPanelIndex = this.getCurrentPanelIndex();
if( panels && curPanelIndex > 0 && curPanelIndex < panels.length )
this.openPanel(panels[curPanelIndex-1]);
};
Spry.Widget.Accordion.prototype.openFirstPanel = function()
{
var panels = this.getPanels();
if( panels )
this.openPanel(panels[0]);
};
Spry.Widget.Accordion.prototype.openLastPanel = function()
{
var panels = this.getPanels();
if( panels )
this.openPanel(panels[panels.length-1]);
};
Spry.Widget.Accordion.prototype.onPanelClick = function(panel)
{
// if (this.enableKeyboardNavigation)
// this.element.focus();
if (panel != this.currentPanel)
this.openPanel(panel);
this.focus();
};
Spry.Widget.Accordion.prototype.onFocus = function(e)
{
// this.element.focus();
this.hasFocus = true;
this.addClassName(this.element, this.focusedClass);
};
Spry.Widget.Accordion.prototype.onBlur = function(e)
{
// this.element.blur();
this.hasFocus = false;
this.removeClassName(this.element, this.focusedClass);
};
Spry.Widget.Accordion.KEY_UP = 38;
Spry.Widget.Accordion.KEY_DOWN = 40;
Spry.Widget.Accordion.prototype.onKeyDown = function(e)
{
var key = e.keyCode;
if (!this.hasFocus || (key != this.previousPanelKeyCode && key !=
this.nextPanelKeyCode))
return true;
var panels = this.getPanels();
if (!panels || panels.length < 1)
return false;
var currentPanel = this.currentPanel ? this.currentPanel : panels[0];
var nextPanel = (key == this.nextPanelKeyCode) ?
currentPanel.nextSibling : currentPanel.previousSibling;
while (nextPanel)
{
if (nextPanel.nodeType == 1 /* Node.ELEMENT_NODE */)
break;
nextPanel = (key == this.nextPanelKeyCode) ? nextPanel.nextSibling :
nextPanel.previousSibling;
}
if (nextPanel && currentPanel != nextPanel)
this.openPanel(nextPanel);
if (e.stopPropagation)
e.stopPropagation();
if (e.preventDefault)
e.preventDefault();
return false;
};
Spry.Widget.Accordion.prototype.attachPanelHandlers = function(panel)
{
if (!panel)
return;
var tab = this.getPanelTab(panel);
if (tab)
{
var self = this;
Spry.Widget.Accordion.addEventListener(tab, "click", function(e)
{ return self.onPanelClick(panel); }, false);
Spry.Widget.Accordion.addEventListener(tab, "mouseover", function(e)
{ return self.onPanelTabMouseOver(panel); }, false);
Spry.Widget.Accordion.addEventListener(tab, "mouseout", function(e)
{ return self.onPanelTabMouseOut(panel); }, false);
}
};
Spry.Widget.Accordion.addEventListener = function(element, eventType,
handler, capture)
{
try
{
if (element.addEventListener)
element.addEventListener(eventType, handler, capture);
else if (element.attachEvent)
element.attachEvent("on" + eventType, handler);
}
catch (e) {}
};
Spry.Widget.Accordion.prototype.initPanel = function(panel, isDefault)
{
var content = this.getPanelContent(panel);
if (isDefault)
{
this.currentPanel = panel;
this.removeClassName(panel, this.closedClass);
this.addClassName(panel, this.openClass);
}
else
{
this.removeClassName(panel, this.openClass);
this.addClassName(panel, this.closedClass);
content.style.height = "0px";
}
this.attachPanelHandlers(panel);
};
Spry.Widget.Accordion.prototype.attachBehaviors = function()
{
var panels = this.getPanels();
for (var i = 0; i < panels.length; i++)
{
this.initPanel(panels[i], i == this.defaultPanel);
}
if (this.enableKeyboardNavigation)
{
// XXX: IE doesn't allow the setting of tabindex dynamically. This
means we can't
// rely on adding the tabindex attribute if it is missing to enable
keyboard navigation
// by default.
var tabIndexAttr = this.element.attributes.getNamedItem("tabindex");
// if (!tabIndexAttr) this.element.tabindex = 0;
if (tabIndexAttr)
{
var self = this;
Spry.Widget.Accordion.addEventListener(this.element, "focus",
function(e) { return self.onFocus(e); }, false);
Spry.Widget.Accordion.addEventListener(this.element, "blur",
function(e) { return self.onBlur(e); }, false);
Spry.Widget.Accordion.addEventListener(this.element, "keydown",
function(e) { return self.onKeyDown(e); }, false);
}
}
};
Spry.Widget.Accordion.prototype.getPanels = function()
{
return this.getElementChildren(this.element);
};
Spry.Widget.Accordion.prototype.getCurrentPanel = function()
{
return this.currentPanel;
};
Spry.Widget.Accordion.prototype.getCurrentPanelIndex = function()
{
var panels = this.getPanels();
for( var i = 0 ; i < panels.length; i++ )
{
if( this.currentPanel == panels[i] )
return i;
}
return 0;
};
Spry.Widget.Accordion.prototype.getPanelTab = function(panel)
{
if (!panel)
return null;
return this.getElementChildren(panel)[0];
};
Spry.Widget.Accordion.prototype.getPanelContent = function(panel)
{
if (!panel)
return null;
return this.getElementChildren(panel)[1];
};
Spry.Widget.Accordion.prototype.getElementChildren = function(element)
{
var children = [];
var child = element.firstChild;
while (child)
{
if (child.nodeType == 1 /* Node.ELEMENT_NODE */)
children.push(child);
child = child.nextSibling;
}
return children;
};
Spry.Widget.Accordion.prototype.focus = function()
{
if (this.element && this.element.focus)
this.element.focus();
};
/////////////////////////////////////////////////////
Spry.Widget.Accordion.PanelAnimator = function(accordion, panel, opts)
{
this.timer = null;
this.interval = 0;
this.stepCount = 0;
this.fps = 0;
this.steps = 10;
this.duration = 500;
this.onComplete = null;
this.panel = panel;
this.panelToOpen = accordion.getElement(panel);
this.panelData = [];
Spry.Widget.Accordion.setOptions(this, opts, true);
// If caller specified speed in terms of frames per second,
// convert them into steps.
if (this.fps > 0)
{
this.interval = Math.floor(1000 / this.fps);
this.steps = parseInt((this.duration + (this.interval - 1)) /
this.interval);
}
else if (this.steps > 0)
this.interval = this.duration / this.steps;
// Set up the array of panels we want to animate.
var panels = accordion.getPanels();
for (var i = 0; i < panels.length; i++)
{
var p = panels[i];
var c = accordion.getPanelContent(p);
if (c)
{
var h = c.offsetHeight;
if (h == undefined)
h = 0;
if (p == panel || h > 0)
{
var obj = new Object;
obj.panel = p;
obj.content = c;
obj.fromHeight = h;
obj.toHeight = (p == panel) ? (accordion.useFixedPanelHeights ?
accordion.fixedPanelHeight : c.scrollHeight) : 0;
obj.increment = (obj.toHeight - obj.fromHeight) / this.steps;
obj.overflow = c.style.overflow;
this.panelData.push(obj);
c.style.overflow = "hidden";
c.style.height = h + "px";
}
}
}
};
Spry.Widget.Accordion.PanelAnimator.prototype.start = function()
{
var self = this;
this.timer = setTimeout(function() { self.stepAnimation(); },
this.interval);
};
Spry.Widget.Accordion.PanelAnimator.prototype.stop = function()
{
if (this.timer)
{
clearTimeout(this.timer);
// If we're killing the timer, restore the overflow
// properties on the panels we were animating!
if (this.stepCount < this.steps)
{
for (i = 0; i < this.panelData.length; i++)
{
obj = this.panelData[i];
obj.content.style.overflow = obj.overflow;
}
}
}
this.timer = null;
};
Spry.Widget.Accordion.PanelAnimator.prototype.stepAnimation =
function()
{
++this.stepCount;
this.animate();
if (this.stepCount < this.steps)
this.start();
else if (this.onComplete)
this.onComplete();
};
Spry.Widget.Accordion.PanelAnimator.prototype.animate = function()
{
var i, obj;
if (this.stepCount >= this.steps)
{
for (i = 0; i < this.panelData.length; i++)
{
obj = this.panelData[i];
if (obj.panel != this.panel)
obj.content.style.height = "0px";
obj.content.style.overflow = obj.overflow;
obj.content.style.height = obj.toHeight + "px";
}
}
else
{
for (i = 0; i < this.panelData.length; i++)
{
obj = this.panelData[i];
obj.fromHeight += obj.increment;
obj.content.style.height = obj.fromHeight + "px";
}
}
};
Thanks
Tim