SpryCollapsiblePanel.js
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上传日期:2022-06-22
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- /* SpryCollapsiblePanel.js - Revision: Spry Preview Release 1.4 */
- // 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.
- var Spry;
- if (!Spry) Spry = {};
- if (!Spry.Widget) Spry.Widget = {};
- Spry.Widget.CollapsiblePanel = function(element, opts)
- {
- this.init(element);
- Spry.Widget.CollapsiblePanel.setOptions(this, opts);
- this.attachBehaviors();
- };
- Spry.Widget.CollapsiblePanel.prototype.init = function(element)
- {
- this.element = this.getElement(element);
- this.focusElement = null;
- this.hoverClass = "CollapsiblePanelTabHover";
- this.openClass = "CollapsiblePanelOpen";
- this.closedClass = "CollapsiblePanelClosed";
- this.focusedClass = "CollapsiblePanelFocused";
- this.enableAnimation = true;
- this.enableKeyboardNavigation = true;
- this.animator = null;
- this.hasFocus = false;
- this.contentIsOpen = true;
- };
- Spry.Widget.CollapsiblePanel.prototype.getElement = function(ele)
- {
- if (ele && typeof ele == "string")
- return document.getElementById(ele);
- return ele;
- };
- Spry.Widget.CollapsiblePanel.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.CollapsiblePanel.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.CollapsiblePanel.prototype.hasClassName = function(ele, className)
- {
- if (!ele || !className || !ele.className || ele.className.search(new RegExp("\b" + className + "\b")) == -1)
- return false;
- return true;
- };
- Spry.Widget.CollapsiblePanel.prototype.setDisplay = function(ele, display)
- {
- if( ele )
- ele.style.display = display;
- };
- Spry.Widget.CollapsiblePanel.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.CollapsiblePanel.prototype.onTabMouseOver = function()
- {
- this.addClassName(this.getTab(), this.hoverClass);
- };
- Spry.Widget.CollapsiblePanel.prototype.onTabMouseOut = function()
- {
- this.removeClassName(this.getTab(), this.hoverClass);
- };
- Spry.Widget.CollapsiblePanel.prototype.open = function()
- {
- this.contentIsOpen = true;
- if (this.enableAnimation)
- {
- if (this.animator)
- this.animator.stop();
- this.animator = new Spry.Widget.CollapsiblePanel.PanelAnimator(this, true);
- this.animator.start();
- }
- else
- this.setDisplay(this.getContent(), "block");
- this.removeClassName(this.element, this.closedClass);
- this.addClassName(this.element, this.openClass);
- };
- Spry.Widget.CollapsiblePanel.prototype.close = function()
- {
- this.contentIsOpen = false;
- if (this.enableAnimation)
- {
- if (this.animator)
- this.animator.stop();
- this.animator = new Spry.Widget.CollapsiblePanel.PanelAnimator(this, false);
- this.animator.start();
- }
- else
- this.setDisplay(this.getContent(), "none");
- this.removeClassName(this.element, this.openClass);
- this.addClassName(this.element, this.closedClass);
- };
- Spry.Widget.CollapsiblePanel.prototype.onTabClick = function()
- {
- if (this.isOpen())
- this.close();
- else
- this.open();
- this.focus();
- };
- Spry.Widget.CollapsiblePanel.prototype.onFocus = function(e)
- {
- this.hasFocus = true;
- this.addClassName(this.element, this.focusedClass);
- };
- Spry.Widget.CollapsiblePanel.prototype.onBlur = function(e)
- {
- this.hasFocus = false;
- this.removeClassName(this.element, this.focusedClass);
- };
- Spry.Widget.CollapsiblePanel.ENTER_KEY = 13;
- Spry.Widget.CollapsiblePanel.SPACE_KEY = 32;
- Spry.Widget.CollapsiblePanel.prototype.onKeyDown = function(e)
- {
- var key = e.keyCode;
- if (!this.hasFocus || (key != Spry.Widget.CollapsiblePanel.ENTER_KEY && key != Spry.Widget.CollapsiblePanel.SPACE_KEY))
- return true;
-
- if (this.isOpen())
- this.close();
- else
- this.open();
- if (e.stopPropagation)
- e.stopPropagation();
- if (e.preventDefault)
- e.preventDefault();
- return false;
- };
- Spry.Widget.CollapsiblePanel.prototype.attachPanelHandlers = function()
- {
- var tab = this.getTab();
- if (!tab)
- return;
- var self = this;
- Spry.Widget.CollapsiblePanel.addEventListener(tab, "click", function(e) { return self.onTabClick(); }, false);
- Spry.Widget.CollapsiblePanel.addEventListener(tab, "mouseover", function(e) { return self.onTabMouseOver(); }, false);
- Spry.Widget.CollapsiblePanel.addEventListener(tab, "mouseout", function(e) { return self.onTabMouseOut(); }, false);
- 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.
- // Find the first element within the tab container that has a tabindex or the first
- // anchor tag.
-
- var tabIndexEle = null;
- var tabAnchorEle = null;
- this.preorderTraversal(tab, function(node) {
- if (node.nodeType == 1 /* NODE.ELEMENT_NODE */)
- {
- var tabIndexAttr = tab.attributes.getNamedItem("tabindex");
- if (tabIndexAttr)
- {
- tabIndexEle = node;
- return true;
- }
- if (!tabAnchorEle && node.nodeName.toLowerCase() == "a")
- tabAnchorEle = node;
- }
- return false;
- });
- if (tabIndexEle)
- this.focusElement = tabIndexEle;
- else if (tabAnchorEle)
- this.focusElement = tabAnchorEle;
- if (this.focusElement)
- {
- Spry.Widget.CollapsiblePanel.addEventListener(this.focusElement, "focus", function(e) { return self.onFocus(e); }, false);
- Spry.Widget.CollapsiblePanel.addEventListener(this.focusElement, "blur", function(e) { return self.onBlur(e); }, false);
- Spry.Widget.CollapsiblePanel.addEventListener(this.focusElement, "keydown", function(e) { return self.onKeyDown(e); }, false);
- }
- }
- };
- Spry.Widget.CollapsiblePanel.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.CollapsiblePanel.prototype.preorderTraversal = function(root, func)
- {
- var stopTraversal = false;
- if (root)
- {
- stopTraversal = func(root);
- if (root.hasChildNodes())
- {
- var child = root.firstChild;
- while (!stopTraversal && child)
- {
- stopTraversal = this.preorderTraversal(child, func);
- try { child = child.nextSibling; } catch (e) { child = null; }
- }
- }
- }
- return stopTraversal;
- };
- Spry.Widget.CollapsiblePanel.prototype.attachBehaviors = function()
- {
- var panel = this.element;
- var tab = this.getTab();
- var content = this.getContent();
- if (this.contentIsOpen || this.hasClassName(panel, this.openClass))
- {
- this.removeClassName(panel, this.closedClass);
- this.setDisplay(content, "block");
- this.contentIsOpen = true;
- }
- else
- {
- this.removeClassName(panel, this.openClass);
- this.addClassName(panel, this.closedClass);
- this.setDisplay(content, "none");
- this.contentIsOpen = false;
- }
- this.attachPanelHandlers();
- };
- Spry.Widget.CollapsiblePanel.prototype.getTab = function()
- {
- return this.getElementChildren(this.element)[0];
- };
- Spry.Widget.CollapsiblePanel.prototype.getContent = function()
- {
- return this.getElementChildren(this.element)[1];
- };
- Spry.Widget.CollapsiblePanel.prototype.isOpen = function()
- {
- return this.contentIsOpen;
- };
- Spry.Widget.CollapsiblePanel.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.CollapsiblePanel.prototype.focus = function()
- {
- if (this.focusElement && this.focusElement.focus)
- this.focusElement.focus();
- };
- /////////////////////////////////////////////////////
- Spry.Widget.CollapsiblePanel.PanelAnimator = function(panel, doOpen, 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.content = panel.getContent();
- this.panelData = [];
- this.doOpen = doOpen;
- Spry.Widget.CollapsiblePanel.setOptions(this, opts);
- // 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;
- var c = this.content;
- var curHeight = c.offsetHeight ? c.offsetHeight : 0;
-
- if (doOpen && c.style.display == "none")
- this.fromHeight = 0;
- else
- this.fromHeight = curHeight;
- if (!doOpen)
- this.toHeight = 0;
- else
- {
- if (c.style.display == "none")
- {
- // The content area is not displayed so in order to calculate the extent
- // of the content inside it, we have to set its display to block.
- c.style.visibility = "hidden";
- c.style.display = "block";
- }
- // Unfortunately in Mozilla/Firefox, fetching the offsetHeight seems to cause
- // the browser to synchronously re-layout and re-display content on the page,
- // so we see a brief flash of content that is *after* the panel being positioned
- // where it should when the panel is fully expanded. To get around this, we
- // temporarily position the content area of the panel absolutely off-screen.
- // This has the effect of taking the content out-of-flow, so nothing shifts around.
- // var oldPos = c.style.position;
- // var oldLeft = c.style.left;
- // c.style.position = "absolute";
- // c.style.left = "-2000em";
- // Clear the height property so we can calculate
- // the full height of the content we are going to show.
- c.style.height = "";
- this.toHeight = c.offsetHeight;
- // Now restore the position and offset to what it was!
- // c.style.position = oldPos;
- // c.style.left = oldLeft;
- }
- this.increment = (this.toHeight - this.fromHeight) / this.steps;
- this.overflow = c.style.overflow;
- c.style.height = this.fromHeight + "px";
- c.style.visibility = "visible";
- c.style.overflow = "hidden";
- c.style.display = "block";
- };
- Spry.Widget.CollapsiblePanel.PanelAnimator.prototype.start = function()
- {
- var self = this;
- this.timer = setTimeout(function() { self.stepAnimation(); }, this.interval);
- };
- Spry.Widget.CollapsiblePanel.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)
- this.content.style.overflow = this.overflow;
- }
- this.timer = null;
- };
- Spry.Widget.CollapsiblePanel.PanelAnimator.prototype.stepAnimation = function()
- {
- ++this.stepCount;
- this.animate();
- if (this.stepCount < this.steps)
- this.start();
- else if (this.onComplete)
- this.onComplete();
- };
- Spry.Widget.CollapsiblePanel.PanelAnimator.prototype.animate = function()
- {
- if (this.stepCount >= this.steps)
- {
- if (!this.doOpen)
- this.content.style.display = "none";
- this.content.style.overflow = this.overflow;
- this.content.style.height = this.toHeight + "px";
- }
- else
- {
- this.fromHeight += this.increment;
- this.content.style.height = this.fromHeight + "px";
- }
- };