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Revision as of 09:19, 26 July 2013

// SpryAccordion.js - version 0.17 - Spry Pre-Release 1.6.1 // // Copyright (c) 2006. Adobe Systems Incorporated. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // * Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // * Neither the name of Adobe Systems Incorporated nor the names of its // contributors may be used to endorse or promote products derived from this // software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGE.

(function() { // BeginSpryComponent

if (typeof Spry == "undefined") window.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.previousPanelKeyCode = Spry.Widget.Accordion.KEY_UP; this.nextPanelKeyCode = Spry.Widget.Accordion.KEY_DOWN;

this.useFixedPanelHeights = true; this.fixedPanelHeight = 0;

Spry.Widget.Accordion.setOptions(this, opts, true);

if (this.element) this.attachBehaviors(); };

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(e, panel) { if (panel) this.addClassName(this.getPanelTab(panel), this.hoverClass); return false; };

Spry.Widget.Accordion.prototype.onPanelTabMouseOut = function(e, panel) { if (panel) this.removeClassName(this.getPanelTab(panel), this.hoverClass); return false; };

Spry.Widget.Accordion.prototype.openPanel = function(elementOrIndex) { var panelA = this.currentPanel; var panelB;

if (typeof elementOrIndex == "number") panelB = this.getPanels()[elementOrIndex]; else panelB = this.getElement(elementOrIndex);

if (!panelB || panelA == panelB) return null;

var contentA = panelA ? this.getPanelContent(panelA) : null; var contentB = this.getPanelContent(panelB);

if (!contentB) return null;

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, fps: this.fps, transition: this.transition }); this.animator.start(); } else { if(contentA) { contentA.style.display = "none"; contentA.style.height = "0px"; } contentB.style.display = "block"; contentB.style.height = this.useFixedPanelHeights ? this.fixedPanelHeight + "px" : "auto"; }

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;

return panelB; };

Spry.Widget.Accordion.prototype.closePanel = function() { // The accordion can only ever have one panel open at any // give time, so this method only closes the current panel. // If the accordion is in fixed panel heights mode, this // method does nothing.

if (!this.useFixedPanelHeights && this.currentPanel) { var panel = this.currentPanel; var content = this.getPanelContent(panel); if (content) { if (this.enableAnimation) { if (this.animator) this.animator.stop(); this.animator = new Spry.Widget.Accordion.PanelAnimator(this, null, { duration: this.duration, fps: this.fps, transition: this.transition }); this.animator.start(); } else { content.style.display = "none"; content.style.height = "0px"; } } this.removeClassName(panel, this.openClass); this.addClassName(panel, this.closedClass); this.currentPanel = null; } };

Spry.Widget.Accordion.prototype.openNextPanel = function() { return this.openPanel(this.getCurrentPanelIndex() + 1); };

Spry.Widget.Accordion.prototype.openPreviousPanel = function() { return this.openPanel(this.getCurrentPanelIndex() - 1); };

Spry.Widget.Accordion.prototype.openFirstPanel = function() { return this.openPanel(0); };

Spry.Widget.Accordion.prototype.openLastPanel = function() { var panels = this.getPanels(); return this.openPanel(panels[panels.length - 1]); };

Spry.Widget.Accordion.prototype.onPanelTabClick = function(e, panel) { if (panel != this.currentPanel) this.openPanel(panel); else this.closePanel();

if (this.enableKeyboardNavigation) this.focus();

if (e.preventDefault) e.preventDefault(); else e.returnValue = false; if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true;

return false; };

Spry.Widget.Accordion.prototype.onFocus = function(e) { this.hasFocus = true; this.addClassName(this.element, this.focusedClass); return false; };

Spry.Widget.Accordion.prototype.onBlur = function(e) { this.hasFocus = false; this.removeClassName(this.element, this.focusedClass); return false; };

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.preventDefault) e.preventDefault(); else e.returnValue = false; if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true;

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.onPanelTabClick(e, panel); }, false); Spry.Widget.Accordion.addEventListener(tab, "mouseover", function(e) { return self.onPanelTabMouseOver(e, panel); }, false); Spry.Widget.Accordion.addEventListener(tab, "mouseout", function(e) { return self.onPanelTabMouseOut(e, 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);

// Attempt to set up the height of the default panel. We don't want to // do any dynamic panel height calculations here because our accordion // or one of its parent containers may be display:none.

if (content) { if (this.useFixedPanelHeights) { // We are in fixed panel height mode and the user passed in // a panel height for us to use.

if (this.fixedPanelHeight) content.style.height = this.fixedPanelHeight + "px"; } else { // We are in variable panel height mode, but since we can't // calculate the panel height here, we just set the height to // auto so that it expands to show all of its content.

content.style.height = "auto"; } } } else { this.removeClassName(panel, this.openClass); this.addClassName(panel, this.closedClass);

if (content) { content.style.height = "0px"; content.style.display = "none"; } }

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);

// Advanced keyboard navigation requires the tabindex attribute // on the top-level element.

this.enableKeyboardNavigation = (this.enableKeyboardNavigation && this.element.attributes.getNamedItem("tabindex")); if (this.enableKeyboardNavigation) { 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.getPanelIndex = function(panel) { var panels = this.getPanels(); for( var i = 0 ; i < panels.length; i++ ) { if( panel == panels[i] ) return i; } return -1; };

Spry.Widget.Accordion.prototype.getCurrentPanelIndex = function() { return this.getPanelIndex(this.currentPanel); };

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.prototype.blur = function() { if (this.element && this.element.blur) this.element.blur(); };

/////////////////////////////////////////////////////

Spry.Widget.Accordion.PanelAnimator = function(accordion, panel, opts) { this.timer = null; this.interval = 0;

this.fps = 60; this.duration = 500; this.startTime = 0;

this.transition = Spry.Widget.Accordion.PanelAnimator.defaultTransition;

this.onComplete = null;

this.panel = panel; this.panelToOpen = accordion.getElement(panel); this.panelData = []; this.useFixedPanelHeights = accordion.useFixedPanelHeights;

Spry.Widget.Accordion.setOptions(this, opts, true);

this.interval = Math.floor(1000 / this.fps);

// 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) c.style.display = "block";

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.distance = obj.toHeight - obj.fromHeight; obj.overflow = c.style.overflow; this.panelData.push(obj);

c.style.overflow = "hidden"; c.style.height = h + "px"; } } } };

Spry.Widget.Accordion.PanelAnimator.defaultTransition = function(time, begin, finish, duration) { time /= duration; return begin + ((2 - time) * time * finish); };

Spry.Widget.Accordion.PanelAnimator.prototype.start = function() { var self = this; this.startTime = (new Date).getTime(); 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!

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() { var curTime = (new Date).getTime(); var elapsedTime = curTime - this.startTime;

var i, obj;

if (elapsedTime >= this.duration) { for (i = 0; i < this.panelData.length; i++) { obj = this.panelData[i]; if (obj.panel != this.panel) { obj.content.style.display = "none"; obj.content.style.height = "0px"; } obj.content.style.overflow = obj.overflow; obj.content.style.height = (this.useFixedPanelHeights || obj.toHeight == 0) ? obj.toHeight + "px" : "auto"; } if (this.onComplete) this.onComplete(); return; }

for (i = 0; i < this.panelData.length; i++) { obj = this.panelData[i]; var ht = this.transition(elapsedTime, obj.fromHeight, obj.distance, this.duration); obj.content.style.height = ((ht < 0) ? 0 : ht) + "px"; }

var self = this; this.timer = setTimeout(function() { self.stepAnimation(); }, this.interval); };

})(); // EndSpryComponent