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- <title>The source code</title>
- <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
- <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.0.3
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-/**\r
- * @class Ext.Element\r
- */\r
-Ext.Element.addMethods({\r
- <div id="method-Ext.Element-getAnchorXY"></div>/**\r
- * Gets the x,y coordinates specified by the anchor position on the element.\r
- * @param {String} anchor (optional) The specified anchor position (defaults to "c"). See {@link #alignTo}\r
- * for details on supported anchor positions.\r
- * @param {Boolean} local (optional) True to get the local (element top/left-relative) anchor position instead\r
- * of page coordinates\r
- * @param {Object} size (optional) An object containing the size to use for calculating anchor position\r
- * {width: (target width), height: (target height)} (defaults to the element's current size)\r
- * @return {Array} [x, y] An array containing the element's x and y coordinates\r
- */\r
- getAnchorXY : function(anchor, local, s){\r
- //Passing a different size is useful for pre-calculating anchors,\r
- //especially for anchored animations that change the el size.\r
- anchor = (anchor || "tl").toLowerCase();\r
- s = s || {};\r
- \r
- var me = this, \r
- vp = me.dom == document.body || me.dom == document,\r
- w = s.width || vp ? Ext.lib.Dom.getViewWidth() : me.getWidth(),\r
- h = s.height || vp ? Ext.lib.Dom.getViewHeight() : me.getHeight(), \r
- xy, \r
- r = Math.round,\r
- o = me.getXY(),\r
- scroll = me.getScroll(),\r
- extraX = vp ? scroll.left : !local ? o[0] : 0,\r
- extraY = vp ? scroll.top : !local ? o[1] : 0,\r
- hash = {\r
- c : [r(w * 0.5), r(h * 0.5)],\r
- t : [r(w * 0.5), 0],\r
- l : [0, r(h * 0.5)],\r
- r : [w, r(h * 0.5)],\r
- b : [r(w * 0.5), h],\r
- tl : [0, 0], \r
- bl : [0, h],\r
- br : [w, h],\r
- tr : [w, 0]\r
- };\r
- \r
- xy = hash[anchor]; \r
- return [xy[0] + extraX, xy[1] + extraY]; \r
- },\r
-\r
- <div id="method-Ext.Element-anchorTo"></div>/**\r
- * Anchors an element to another element and realigns it when the window is resized.\r
- * @param {Mixed} element The element to align to.\r
- * @param {String} position The position to align to.\r
- * @param {Array} offsets (optional) Offset the positioning by [x, y]\r
- * @param {Boolean/Object} animate (optional) True for the default animation or a standard Element animation config object\r
- * @param {Boolean/Number} monitorScroll (optional) True to monitor body scroll and reposition. If this parameter\r
- * is a number, it is used as the buffer delay (defaults to 50ms).\r
- * @param {Function} callback The function to call after the animation finishes\r
- * @return {Ext.Element} this\r
- */\r
- anchorTo : function(el, alignment, offsets, animate, monitorScroll, callback){ \r
- var me = this,\r
- dom = me.dom;\r
- \r
- function action(){\r
- Ext.fly(dom).alignTo(el, alignment, offsets, animate);\r
- Ext.callback(callback, Ext.fly(dom));\r
- }\r
- \r
- Ext.EventManager.onWindowResize(action, me);\r
- \r
- if(!Ext.isEmpty(monitorScroll)){\r
- Ext.EventManager.on(window, 'scroll', action, me,\r
- {buffer: !isNaN(monitorScroll) ? monitorScroll : 50});\r
- }\r
- action.call(me); // align immediately\r
- return me;\r
- },\r
-\r
- <div id="method-Ext.Element-getAlignToXY"></div>/**\r
- * Gets the x,y coordinates to align this element with another element. See {@link #alignTo} for more info on the\r
- * supported position values.\r
- * @param {Mixed} element The element to align to.\r
- * @param {String} position The position to align to.\r
- * @param {Array} offsets (optional) Offset the positioning by [x, y]\r
- * @return {Array} [x, y]\r
- */\r
- getAlignToXY : function(el, p, o){ \r
- el = Ext.get(el);\r
- \r
- if(!el || !el.dom){\r
- throw "Element.alignToXY with an element that doesn't exist";\r
- }\r
- \r
- o = o || [0,0];\r
- p = (p == "?" ? "tl-bl?" : (!/-/.test(p) && p !== "" ? "tl-" + p : p || "tl-bl")).toLowerCase(); \r
- \r
- var me = this,\r
- d = me.dom,\r
- a1,\r
- a2,\r
- x,\r
- y,\r
- //constrain the aligned el to viewport if necessary\r
- w,\r
- h,\r
- r,\r
- dw = Ext.lib.Dom.getViewWidth() -10, // 10px of margin for ie\r
- dh = Ext.lib.Dom.getViewHeight()-10, // 10px of margin for ie\r
- p1y,\r
- p1x, \r
- p2y,\r
- p2x,\r
- swapY,\r
- swapX,\r
- doc = document,\r
- docElement = doc.documentElement,\r
- docBody = doc.body,\r
- scrollX = (docElement.scrollLeft || docBody.scrollLeft || 0)+5,\r
- scrollY = (docElement.scrollTop || docBody.scrollTop || 0)+5,\r
- c = false, //constrain to viewport\r
- p1 = "", \r
- p2 = "",\r
- m = p.match(/^([a-z]+)-([a-z]+)(\?)?$/);\r
- \r
- if(!m){\r
- throw "Element.alignTo with an invalid alignment " + p;\r
- }\r
- \r
- p1 = m[1]; \r
- p2 = m[2]; \r
- c = !!m[3];\r
-\r
- //Subtract the aligned el's internal xy from the target's offset xy\r
- //plus custom offset to get the aligned el's new offset xy\r
- a1 = me.getAnchorXY(p1, true);\r
- a2 = el.getAnchorXY(p2, false);\r
-\r
- x = a2[0] - a1[0] + o[0];\r
- y = a2[1] - a1[1] + o[1];\r
-\r
- if(c){ \r
- w = me.getWidth();\r
- h = me.getHeight();\r
- r = el.getRegion(); \r
- //If we are at a viewport boundary and the aligned el is anchored on a target border that is\r
- //perpendicular to the vp border, allow the aligned el to slide on that border,\r
- //otherwise swap the aligned el to the opposite border of the target.\r
- p1y = p1.charAt(0);\r
- p1x = p1.charAt(p1.length-1);\r
- p2y = p2.charAt(0);\r
- p2x = p2.charAt(p2.length-1);\r
- swapY = ((p1y=="t" && p2y=="b") || (p1y=="b" && p2y=="t"));\r
- swapX = ((p1x=="r" && p2x=="l") || (p1x=="l" && p2x=="r")); \r
- \r
-\r
- if (x + w > dw + scrollX) {\r
- x = swapX ? r.left-w : dw+scrollX-w;\r
- }\r
- if (x < scrollX) {\r
- x = swapX ? r.right : scrollX;\r
- }\r
- if (y + h > dh + scrollY) {\r
- y = swapY ? r.top-h : dh+scrollY-h;\r
- }\r
- if (y < scrollY){\r
- y = swapY ? r.bottom : scrollY;\r
- }\r
- }\r
- return [x,y];\r
- },\r
-\r
- <div id="method-Ext.Element-alignTo"></div>/**\r
- * Aligns this element with another element relative to the specified anchor points. If the other element is the\r
- * document it aligns it to the viewport.\r
- * The position parameter is optional, and can be specified in any one of the following formats:\r
- * <ul>\r
- * <li><b>Blank</b>: Defaults to aligning the element's top-left corner to the target's bottom-left corner ("tl-bl").</li>\r
- * <li><b>One anchor (deprecated)</b>: The passed anchor position is used as the target element's anchor point.\r
- * The element being aligned will position its top-left corner (tl) to that point. <i>This method has been\r
- * deprecated in favor of the newer two anchor syntax below</i>.</li>\r
- * <li><b>Two anchors</b>: If two values from the table below are passed separated by a dash, the first value is used as the\r
- * element's anchor point, and the second value is used as the target's anchor point.</li>\r
- * </ul>\r
- * In addition to the anchor points, the position parameter also supports the "?" character. If "?" is passed at the end of\r
- * the position string, the element will attempt to align as specified, but the position will be adjusted to constrain to\r
- * the viewport if necessary. Note that the element being aligned might be swapped to align to a different position than\r
- * that specified in order to enforce the viewport constraints.\r
- * Following are all of the supported anchor positions:\r
-<pre>\r
-Value Description\r
------ -----------------------------\r
-tl The top left corner (default)\r
-t The center of the top edge\r
-tr The top right corner\r
-l The center of the left edge\r
-c In the center of the element\r
-r The center of the right edge\r
-bl The bottom left corner\r
-b The center of the bottom edge\r
-br The bottom right corner\r
-</pre>\r
-Example Usage:\r
-<pre><code>\r
-// align el to other-el using the default positioning ("tl-bl", non-constrained)\r
-el.alignTo("other-el");\r
-\r
-// align the top left corner of el with the top right corner of other-el (constrained to viewport)\r
-el.alignTo("other-el", "tr?");\r
-\r
-// align the bottom right corner of el with the center left edge of other-el\r
-el.alignTo("other-el", "br-l?");\r
-\r
-// align the center of el with the bottom left corner of other-el and\r
-// adjust the x position by -6 pixels (and the y position by 0)\r
-el.alignTo("other-el", "c-bl", [-6, 0]);\r
-</code></pre>\r
- * @param {Mixed} element The element to align to.\r
- * @param {String} position The position to align to.\r
- * @param {Array} offsets (optional) Offset the positioning by [x, y]\r
- * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object\r
- * @return {Ext.Element} this\r
- */\r
- alignTo : function(element, position, offsets, animate){\r
- var me = this;\r
- return me.setXY(me.getAlignToXY(element, position, offsets),\r
- me.preanim && !!animate ? me.preanim(arguments, 3) : false);\r
- },\r
- \r
- // private ==> used outside of core\r
- adjustForConstraints : function(xy, parent, offsets){\r
- return this.getConstrainToXY(parent || document, false, offsets, xy) || xy;\r
- },\r
-\r
- // private ==> used outside of core\r
- getConstrainToXY : function(el, local, offsets, proposedXY){ \r
- var os = {top:0, left:0, bottom:0, right: 0};\r
-\r
- return function(el, local, offsets, proposedXY){\r
- el = Ext.get(el);\r
- offsets = offsets ? Ext.applyIf(offsets, os) : os;\r
-\r
- var vw, vh, vx = 0, vy = 0;\r
- if(el.dom == document.body || el.dom == document){\r
- vw =Ext.lib.Dom.getViewWidth();\r
- vh = Ext.lib.Dom.getViewHeight();\r
- }else{\r
- vw = el.dom.clientWidth;\r
- vh = el.dom.clientHeight;\r
- if(!local){\r
- var vxy = el.getXY();\r
- vx = vxy[0];\r
- vy = vxy[1];\r
- }\r
- }\r
-\r
- var s = el.getScroll();\r
-\r
- vx += offsets.left + s.left;\r
- vy += offsets.top + s.top;\r
-\r
- vw -= offsets.right;\r
- vh -= offsets.bottom;\r
-\r
- var vr = vx+vw;\r
- var vb = vy+vh;\r
-\r
- var xy = proposedXY || (!local ? this.getXY() : [this.getLeft(true), this.getTop(true)]);\r
- var x = xy[0], y = xy[1];\r
- var w = this.dom.offsetWidth, h = this.dom.offsetHeight;\r
-\r
- // only move it if it needs it\r
- var moved = false;\r
-\r
- // first validate right/bottom\r
- if((x + w) > vr){\r
- x = vr - w;\r
- moved = true;\r
- }\r
- if((y + h) > vb){\r
- y = vb - h;\r
- moved = true;\r
- }\r
- // then make sure top/left isn't negative\r
- if(x < vx){\r
- x = vx;\r
- moved = true;\r
- }\r
- if(y < vy){\r
- y = vy;\r
- moved = true;\r
- }\r
- return moved ? [x, y] : false;\r
- };\r
- }(),\r
- \r
- \r
- \r
-// el = Ext.get(el);\r
-// offsets = Ext.applyIf(offsets || {}, {top : 0, left : 0, bottom : 0, right : 0});\r
-\r
-// var me = this,\r
-// doc = document,\r
-// s = el.getScroll(),\r
-// vxy = el.getXY(),\r
-// vx = offsets.left + s.left, \r
-// vy = offsets.top + s.top, \r
-// vw = -offsets.right, \r
-// vh = -offsets.bottom, \r
-// vr,\r
-// vb,\r
-// xy = proposedXY || (!local ? me.getXY() : [me.getLeft(true), me.getTop(true)]),\r
-// x = xy[0],\r
-// y = xy[1],\r
-// w = me.dom.offsetWidth, h = me.dom.offsetHeight,\r
-// moved = false; // only move it if it needs it\r
-// \r
-// \r
-// if(el.dom == doc.body || el.dom == doc){\r
-// vw += Ext.lib.Dom.getViewWidth();\r
-// vh += Ext.lib.Dom.getViewHeight();\r
-// }else{\r
-// vw += el.dom.clientWidth;\r
-// vh += el.dom.clientHeight;\r
-// if(!local){ \r
-// vx += vxy[0];\r
-// vy += vxy[1];\r
-// }\r
-// }\r
-\r
-// // first validate right/bottom\r
-// if(x + w > vx + vw){\r
-// x = vx + vw - w;\r
-// moved = true;\r
-// }\r
-// if(y + h > vy + vh){\r
-// y = vy + vh - h;\r
-// moved = true;\r
-// }\r
-// // then make sure top/left isn't negative\r
-// if(x < vx){\r
-// x = vx;\r
-// moved = true;\r
-// }\r
-// if(y < vy){\r
-// y = vy;\r
-// moved = true;\r
-// }\r
-// return moved ? [x, y] : false;\r
-// },\r
- \r
- <div id="method-Ext.Element-getCenterXY"></div>/**\r
- * Calculates the x, y to center this element on the screen\r
- * @return {Array} The x, y values [x, y]\r
- */\r
- getCenterXY : function(){\r
- return this.getAlignToXY(document, 'c-c');\r
- },\r
-\r
- <div id="method-Ext.Element-center"></div>/**\r
- * Centers the Element in either the viewport, or another Element.\r
- * @param {Mixed} centerIn (optional) The element in which to center the element.\r
- */\r
- center : function(centerIn){\r
- return this.alignTo(centerIn || document, 'c-c'); \r
- } \r
-});\r
-</pre>
-</body>
-</html>
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