// SpryAccordion.js - version 0.14 - Spry Pre-Release 1.6
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//
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// Copyright (c) 2006. Adobe Systems Incorporated.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Adobe Systems Incorporated nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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var Spry;
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if (!Spry) Spry = {};
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if (!Spry.Widget) Spry.Widget = {};
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Spry.Widget.Accordion = function(element, opts)
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{
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this.element = this.getElement(element);
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this.defaultPanel = 0;
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this.hoverClass = "AccordionPanelTabHover";
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this.openClass = "AccordionPanelOpen";
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this.closedClass = "AccordionPanelClosed";
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this.focusedClass = "AccordionFocused";
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this.enableAnimation = true;
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this.enableKeyboardNavigation = true;
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this.currentPanel = null;
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this.animator = null;
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this.hasFocus = null;
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this.previousPanelKeyCode = Spry.Widget.Accordion.KEY_UP;
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this.nextPanelKeyCode = Spry.Widget.Accordion.KEY_DOWN;
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this.useFixedPanelHeights = true;
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this.fixedPanelHeight = 0;
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Spry.Widget.Accordion.setOptions(this, opts, true);
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this.attachBehaviors();
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};
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Spry.Widget.Accordion.prototype.getElement = function(ele)
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{
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if (ele && typeof ele == "string")
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return document.getElementById(ele);
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return ele;
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};
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Spry.Widget.Accordion.prototype.addClassName = function(ele, className)
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{
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if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))
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return;
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ele.className += (ele.className ? " " : "") + className;
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};
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Spry.Widget.Accordion.prototype.removeClassName = function(ele, className)
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{
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if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))
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return;
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ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
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};
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Spry.Widget.Accordion.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
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{
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if (!optionsObj)
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return;
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for (var optionName in optionsObj)
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{
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if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
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continue;
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obj[optionName] = optionsObj[optionName];
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}
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};
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Spry.Widget.Accordion.prototype.onPanelTabMouseOver = function(e, panel)
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{
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if (panel)
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this.addClassName(this.getPanelTab(panel), this.hoverClass);
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return false;
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};
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Spry.Widget.Accordion.prototype.onPanelTabMouseOut = function(e, panel)
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{
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if (panel)
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this.removeClassName(this.getPanelTab(panel), this.hoverClass);
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return false;
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};
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Spry.Widget.Accordion.prototype.openPanel = function(elementOrIndex)
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{
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var panelA = this.currentPanel;
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var panelB;
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if (typeof elementOrIndex == "number")
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panelB = this.getPanels()[elementOrIndex];
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else
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panelB = this.getElement(elementOrIndex);
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if (!panelB || panelA == panelB)
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return null;
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var contentA = panelA ? this.getPanelContent(panelA) : null;
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var contentB = this.getPanelContent(panelB);
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if (!contentB)
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return null;
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if (this.useFixedPanelHeights && !this.fixedPanelHeight)
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this.fixedPanelHeight = (contentA.offsetHeight) ? contentA.offsetHeight : contentA.scrollHeight;
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if (this.enableAnimation)
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{
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if (this.animator)
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this.animator.stop();
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this.animator = new Spry.Widget.Accordion.PanelAnimator(this, panelB, { duration: this.duration, fps: this.fps, transition: this.transition });
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this.animator.start();
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}
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else
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{
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if(contentA)
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{
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contentA.style.display = "none";
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contentA.style.height = "0px";
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}
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contentB.style.display = "block";
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contentB.style.height = (this.useFixedPanelHeights ? this.fixedPanelHeight : contentB.scrollHeight) + "px";
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}
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if(panelA)
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{
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this.removeClassName(panelA, this.openClass);
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this.addClassName(panelA, this.closedClass);
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}
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this.removeClassName(panelB, this.closedClass);
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this.addClassName(panelB, this.openClass);
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this.currentPanel = panelB;
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return panelB;
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};
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Spry.Widget.Accordion.prototype.closePanel = function()
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{
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// The accordion can only ever have one panel open at any
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// give time, so this method only closes the current panel.
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// If the accordion is in fixed panel heights mode, this
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// method does nothing.
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if (!this.useFixedPanelHeights && this.currentPanel)
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{
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var panel = this.currentPanel;
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var content = this.getPanelContent(panel);
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if (content)
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{
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if (this.enableAnimation)
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{
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if (this.animator)
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this.animator.stop();
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this.animator = new Spry.Widget.Accordion.PanelAnimator(this, null, { duration: this.duration, fps: this.fps, transition: this.transition });
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this.animator.start();
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}
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else
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{
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content.style.display = "none";
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content.style.height = "0px";
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}
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}
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this.removeClassName(panel, this.openClass);
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this.addClassName(panel, this.closedClass);
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this.currentPanel = null;
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}
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};
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Spry.Widget.Accordion.prototype.openNextPanel = function()
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{
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return this.openPanel(this.getCurrentPanelIndex() + 1);
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};
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Spry.Widget.Accordion.prototype.openPreviousPanel = function()
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{
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return this.openPanel(this.getCurrentPanelIndex() - 1);
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};
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Spry.Widget.Accordion.prototype.openFirstPanel = function()
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{
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return this.openPanel(0);
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};
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Spry.Widget.Accordion.prototype.openLastPanel = function()
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{
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var panels = this.getPanels();
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return this.openPanel(panels[panels.length - 1]);
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};
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Spry.Widget.Accordion.prototype.onPanelTabClick = function(e, panel)
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{
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if (panel != this.currentPanel)
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this.openPanel(panel);
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else
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this.closePanel();
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if (this.enableKeyboardNavigation)
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this.focus();
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if (e.preventDefault) e.preventDefault();
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else e.returnValue = false;
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if (e.stopPropagation) e.stopPropagation();
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else e.cancelBubble = true;
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return false;
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};
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Spry.Widget.Accordion.prototype.onFocus = function(e)
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{
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this.hasFocus = true;
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this.addClassName(this.element, this.focusedClass);
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return false;
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};
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Spry.Widget.Accordion.prototype.onBlur = function(e)
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{
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this.hasFocus = false;
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this.removeClassName(this.element, this.focusedClass);
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return false;
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};
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Spry.Widget.Accordion.KEY_UP = 38;
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Spry.Widget.Accordion.KEY_DOWN = 40;
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Spry.Widget.Accordion.prototype.onKeyDown = function(e)
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{
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var key = e.keyCode;
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if (!this.hasFocus || (key != this.previousPanelKeyCode && key != this.nextPanelKeyCode))
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return true;
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var panels = this.getPanels();
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if (!panels || panels.length < 1)
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return false;
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var currentPanel = this.currentPanel ? this.currentPanel : panels[0];
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var nextPanel = (key == this.nextPanelKeyCode) ? currentPanel.nextSibling : currentPanel.previousSibling;
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while (nextPanel)
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{
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if (nextPanel.nodeType == 1 /* Node.ELEMENT_NODE */)
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break;
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nextPanel = (key == this.nextPanelKeyCode) ? nextPanel.nextSibling : nextPanel.previousSibling;
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}
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if (nextPanel && currentPanel != nextPanel)
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this.openPanel(nextPanel);
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if (e.preventDefault) e.preventDefault();
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else e.returnValue = false;
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if (e.stopPropagation) e.stopPropagation();
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else e.cancelBubble = true;
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return false;
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};
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Spry.Widget.Accordion.prototype.attachPanelHandlers = function(panel)
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{
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if (!panel)
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return;
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var tab = this.getPanelTab(panel);
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if (tab)
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{
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var self = this;
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Spry.Widget.Accordion.addEventListener(tab, "click", function(e) { return self.onPanelTabClick(e, panel); }, false);
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Spry.Widget.Accordion.addEventListener(tab, "mouseover", function(e) { return self.onPanelTabMouseOver(e, panel); }, false);
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Spry.Widget.Accordion.addEventListener(tab, "mouseout", function(e) { return self.onPanelTabMouseOut(e, panel); }, false);
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}
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};
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Spry.Widget.Accordion.addEventListener = function(element, eventType, handler, capture)
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{
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try
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{
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if (element.addEventListener)
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element.addEventListener(eventType, handler, capture);
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else if (element.attachEvent)
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element.attachEvent("on" + eventType, handler);
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}
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catch (e) {}
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};
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Spry.Widget.Accordion.prototype.initPanel = function(panel, isDefault)
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{
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var content = this.getPanelContent(panel);
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if (isDefault)
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{
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this.currentPanel = panel;
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this.removeClassName(panel, this.closedClass);
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this.addClassName(panel, this.openClass);
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// Attempt to set up the height of the default panel. We don't want to
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// do any dynamic panel height calculations here because our accordion
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// or one of its parent containers may be display:none.
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if (content)
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{
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if (this.useFixedPanelHeights)
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{
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// We are in fixed panel height mode and the user passed in
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// a panel height for us to use.
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if (this.fixedPanelHeight)
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content.style.height = this.fixedPanelHeight + "px";
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}
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else
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{
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// We are in variable panel height mode, but since we can't
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// calculate the panel height here, we just set the height to
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// auto so that it expands to show all of its content.
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content.style.height = "auto";
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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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this.removeClassName(panel, this.openClass);
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this.addClassName(panel, this.closedClass);
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if (content)
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{
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content.style.height = "0px";
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content.style.display = "none";
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}
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}
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this.attachPanelHandlers(panel);
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};
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Spry.Widget.Accordion.prototype.attachBehaviors = function()
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{
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var panels = this.getPanels();
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for (var i = 0; i < panels.length; i++)
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this.initPanel(panels[i], i == this.defaultPanel);
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// Advanced keyboard navigation requires the tabindex attribute
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// on the top-level element.
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this.enableKeyboardNavigation = (this.enableKeyboardNavigation && this.element.attributes.getNamedItem("tabindex"));
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if (this.enableKeyboardNavigation)
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{
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var self = this;
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Spry.Widget.Accordion.addEventListener(this.element, "focus", function(e) { return self.onFocus(e); }, false);
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Spry.Widget.Accordion.addEventListener(this.element, "blur", function(e) { return self.onBlur(e); }, false);
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Spry.Widget.Accordion.addEventListener(this.element, "keydown", function(e) { return self.onKeyDown(e); }, false);
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}
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};
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Spry.Widget.Accordion.prototype.getPanels = function()
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{
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return this.getElementChildren(this.element);
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};
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Spry.Widget.Accordion.prototype.getCurrentPanel = function()
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{
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return this.currentPanel;
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};
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Spry.Widget.Accordion.prototype.getPanelIndex = function(panel)
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{
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var panels = this.getPanels();
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for( var i = 0 ; i < panels.length; i++ )
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{
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if( panel == panels[i] )
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return i;
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}
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return -1;
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};
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Spry.Widget.Accordion.prototype.getCurrentPanelIndex = function()
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{
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return this.getPanelIndex(this.currentPanel);
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};
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Spry.Widget.Accordion.prototype.getPanelTab = function(panel)
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{
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if (!panel)
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return null;
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return this.getElementChildren(panel)[0];
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};
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Spry.Widget.Accordion.prototype.getPanelContent = function(panel)
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{
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if (!panel)
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return null;
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return this.getElementChildren(panel)[1];
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};
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Spry.Widget.Accordion.prototype.getElementChildren = function(element)
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{
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var children = [];
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var child = element.firstChild;
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while (child)
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{
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if (child.nodeType == 1 /* Node.ELEMENT_NODE */)
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children.push(child);
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child = child.nextSibling;
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}
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return children;
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};
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Spry.Widget.Accordion.prototype.focus = function()
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{
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if (this.element && this.element.focus)
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this.element.focus();
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};
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Spry.Widget.Accordion.prototype.blur = function()
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{
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if (this.element && this.element.blur)
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this.element.blur();
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};
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/////////////////////////////////////////////////////
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Spry.Widget.Accordion.PanelAnimator = function(accordion, panel, opts)
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{
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this.timer = null;
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this.interval = 0;
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this.fps = 60;
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this.duration = 500;
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this.startTime = 0;
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this.transition = Spry.Widget.Accordion.PanelAnimator.defaultTransition;
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this.onComplete = null;
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this.panel = panel;
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this.panelToOpen = accordion.getElement(panel);
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this.panelData = [];
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Spry.Widget.Accordion.setOptions(this, opts, true);
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this.interval = Math.floor(1000 / this.fps);
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// Set up the array of panels we want to animate.
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var panels = accordion.getPanels();
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for (var i = 0; i < panels.length; i++)
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{
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var p = panels[i];
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var c = accordion.getPanelContent(p);
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if (c)
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{
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var h = c.offsetHeight;
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if (h == undefined)
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h = 0;
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if (p == panel && h == 0)
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c.style.display = "block";
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if (p == panel || h > 0)
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{
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var obj = new Object;
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obj.panel = p;
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obj.content = c;
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obj.fromHeight = h;
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obj.toHeight = (p == panel) ? (accordion.useFixedPanelHeights ? accordion.fixedPanelHeight : c.scrollHeight) : 0;
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obj.distance = obj.toHeight - obj.fromHeight;
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obj.overflow = c.style.overflow;
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this.panelData.push(obj);
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c.style.overflow = "hidden";
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c.style.height = h + "px";
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}
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}
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}
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};
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Spry.Widget.Accordion.PanelAnimator.defaultTransition = function(time, begin, finish, duration) { time /= duration; return begin + ((2 - time) * time * finish); };
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Spry.Widget.Accordion.PanelAnimator.prototype.start = function()
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{
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var self = this;
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this.startTime = (new Date).getTime();
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this.timer = setTimeout(function() { self.stepAnimation(); }, this.interval);
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};
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Spry.Widget.Accordion.PanelAnimator.prototype.stop = function()
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{
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if (this.timer)
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{
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clearTimeout(this.timer);
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// If we're killing the timer, restore the overflow
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// properties on the panels we were animating!
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for (i = 0; i < this.panelData.length; i++)
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{
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obj = this.panelData[i];
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obj.content.style.overflow = obj.overflow;
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}
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}
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this.timer = null;
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};
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Spry.Widget.Accordion.PanelAnimator.prototype.stepAnimation = function()
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{
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var curTime = (new Date).getTime();
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var elapsedTime = curTime - this.startTime;
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var i, obj;
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if (elapsedTime >= this.duration)
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{
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for (i = 0; i < this.panelData.length; i++)
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{
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obj = this.panelData[i];
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if (obj.panel != this.panel)
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{
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obj.content.style.display = "none";
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obj.content.style.height = "0px";
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}
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obj.content.style.overflow = obj.overflow;
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obj.content.style.height = obj.toHeight + "px";
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}
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if (this.onComplete)
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this.onComplete();
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return;
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}
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for (i = 0; i < this.panelData.length; i++)
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{
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obj = this.panelData[i];
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var ht = this.transition(elapsedTime, obj.fromHeight, obj.distance, this.duration);
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obj.content.style.height = ((ht < 0) ? 0 : ht) + "px";
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}
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var self = this;
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this.timer = setTimeout(function() { self.stepAnimation(); }, this.interval);
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};
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