[76] | 1 | /*! |
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| 2 | * Ext JS Library 3.4.0 |
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| 3 | * Copyright(c) 2006-2011 Sencha Inc. |
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| 4 | * licensing@sencha.com |
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| 5 | * http://www.sencha.com/license |
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| 6 | */ |
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| 7 | /** |
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| 8 | * @class Ext.Element |
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| 9 | */ |
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| 10 | Ext.Element.addMethods({ |
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| 11 | /** |
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| 12 | * Gets the x,y coordinates specified by the anchor position on the element. |
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| 13 | * @param {String} anchor (optional) The specified anchor position (defaults to "c"). See {@link #alignTo} |
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| 14 | * for details on supported anchor positions. |
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| 15 | * @param {Boolean} local (optional) True to get the local (element top/left-relative) anchor position instead |
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| 16 | * of page coordinates |
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| 17 | * @param {Object} size (optional) An object containing the size to use for calculating anchor position |
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| 18 | * {width: (target width), height: (target height)} (defaults to the element's current size) |
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| 19 | * @return {Array} [x, y] An array containing the element's x and y coordinates |
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| 20 | */ |
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| 21 | getAnchorXY : function(anchor, local, s){ |
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| 22 | //Passing a different size is useful for pre-calculating anchors, |
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| 23 | //especially for anchored animations that change the el size. |
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| 24 | anchor = (anchor || "tl").toLowerCase(); |
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| 25 | s = s || {}; |
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| 26 | |
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| 27 | var me = this, |
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| 28 | vp = me.dom == document.body || me.dom == document, |
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| 29 | w = s.width || vp ? Ext.lib.Dom.getViewWidth() : me.getWidth(), |
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| 30 | h = s.height || vp ? Ext.lib.Dom.getViewHeight() : me.getHeight(), |
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| 31 | xy, |
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| 32 | r = Math.round, |
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| 33 | o = me.getXY(), |
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| 34 | scroll = me.getScroll(), |
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| 35 | extraX = vp ? scroll.left : !local ? o[0] : 0, |
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| 36 | extraY = vp ? scroll.top : !local ? o[1] : 0, |
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| 37 | hash = { |
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| 38 | c : [r(w * 0.5), r(h * 0.5)], |
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| 39 | t : [r(w * 0.5), 0], |
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| 40 | l : [0, r(h * 0.5)], |
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| 41 | r : [w, r(h * 0.5)], |
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| 42 | b : [r(w * 0.5), h], |
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| 43 | tl : [0, 0], |
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| 44 | bl : [0, h], |
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| 45 | br : [w, h], |
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| 46 | tr : [w, 0] |
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| 47 | }; |
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| 48 | |
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| 49 | xy = hash[anchor]; |
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| 50 | return [xy[0] + extraX, xy[1] + extraY]; |
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| 51 | }, |
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| 52 | |
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| 53 | /** |
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| 54 | * Anchors an element to another element and realigns it when the window is resized. |
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| 55 | * @param {Mixed} element The element to align to. |
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| 56 | * @param {String} position The position to align to. |
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| 57 | * @param {Array} offsets (optional) Offset the positioning by [x, y] |
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| 58 | * @param {Boolean/Object} animate (optional) True for the default animation or a standard Element animation config object |
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| 59 | * @param {Boolean/Number} monitorScroll (optional) True to monitor body scroll and reposition. If this parameter |
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| 60 | * is a number, it is used as the buffer delay (defaults to 50ms). |
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| 61 | * @param {Function} callback The function to call after the animation finishes |
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| 62 | * @return {Ext.Element} this |
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| 63 | */ |
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| 64 | anchorTo : function(el, alignment, offsets, animate, monitorScroll, callback){ |
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| 65 | var me = this, |
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| 66 | dom = me.dom, |
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| 67 | scroll = !Ext.isEmpty(monitorScroll), |
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| 68 | action = function(){ |
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| 69 | Ext.fly(dom).alignTo(el, alignment, offsets, animate); |
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| 70 | Ext.callback(callback, Ext.fly(dom)); |
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| 71 | }, |
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| 72 | anchor = this.getAnchor(); |
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| 73 | |
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| 74 | // previous listener anchor, remove it |
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| 75 | this.removeAnchor(); |
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| 76 | Ext.apply(anchor, { |
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| 77 | fn: action, |
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| 78 | scroll: scroll |
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| 79 | }); |
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| 80 | |
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| 81 | Ext.EventManager.onWindowResize(action, null); |
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| 82 | |
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| 83 | if(scroll){ |
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| 84 | Ext.EventManager.on(window, 'scroll', action, null, |
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| 85 | {buffer: !isNaN(monitorScroll) ? monitorScroll : 50}); |
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| 86 | } |
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| 87 | action.call(me); // align immediately |
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| 88 | return me; |
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| 89 | }, |
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| 90 | |
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| 91 | /** |
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| 92 | * Remove any anchor to this element. See {@link #anchorTo}. |
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| 93 | * @return {Ext.Element} this |
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| 94 | */ |
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| 95 | removeAnchor : function(){ |
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| 96 | var me = this, |
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| 97 | anchor = this.getAnchor(); |
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| 98 | |
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| 99 | if(anchor && anchor.fn){ |
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| 100 | Ext.EventManager.removeResizeListener(anchor.fn); |
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| 101 | if(anchor.scroll){ |
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| 102 | Ext.EventManager.un(window, 'scroll', anchor.fn); |
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| 103 | } |
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| 104 | delete anchor.fn; |
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| 105 | } |
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| 106 | return me; |
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| 107 | }, |
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| 108 | |
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| 109 | // private |
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| 110 | getAnchor : function(){ |
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| 111 | var data = Ext.Element.data, |
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| 112 | dom = this.dom; |
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| 113 | if (!dom) { |
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| 114 | return; |
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| 115 | } |
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| 116 | var anchor = data(dom, '_anchor'); |
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| 117 | |
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| 118 | if(!anchor){ |
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| 119 | anchor = data(dom, '_anchor', {}); |
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| 120 | } |
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| 121 | return anchor; |
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| 122 | }, |
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| 123 | |
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| 124 | /** |
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| 125 | * Gets the x,y coordinates to align this element with another element. See {@link #alignTo} for more info on the |
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| 126 | * supported position values. |
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| 127 | * @param {Mixed} element The element to align to. |
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| 128 | * @param {String} position (optional, defaults to "tl-bl?") The position to align to. |
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| 129 | * @param {Array} offsets (optional) Offset the positioning by [x, y] |
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| 130 | * @return {Array} [x, y] |
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| 131 | */ |
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| 132 | getAlignToXY : function(el, p, o){ |
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| 133 | el = Ext.get(el); |
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| 134 | |
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| 135 | if(!el || !el.dom){ |
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| 136 | throw "Element.alignToXY with an element that doesn't exist"; |
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| 137 | } |
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| 138 | |
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| 139 | o = o || [0,0]; |
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| 140 | p = (!p || p == "?" ? "tl-bl?" : (!(/-/).test(p) && p !== "" ? "tl-" + p : p || "tl-bl")).toLowerCase(); |
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| 141 | |
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| 142 | var me = this, |
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| 143 | d = me.dom, |
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| 144 | a1, |
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| 145 | a2, |
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| 146 | x, |
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| 147 | y, |
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| 148 | //constrain the aligned el to viewport if necessary |
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| 149 | w, |
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| 150 | h, |
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| 151 | r, |
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| 152 | dw = Ext.lib.Dom.getViewWidth() -10, // 10px of margin for ie |
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| 153 | dh = Ext.lib.Dom.getViewHeight()-10, // 10px of margin for ie |
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| 154 | p1y, |
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| 155 | p1x, |
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| 156 | p2y, |
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| 157 | p2x, |
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| 158 | swapY, |
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| 159 | swapX, |
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| 160 | doc = document, |
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| 161 | docElement = doc.documentElement, |
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| 162 | docBody = doc.body, |
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| 163 | scrollX = (docElement.scrollLeft || docBody.scrollLeft || 0)+5, |
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| 164 | scrollY = (docElement.scrollTop || docBody.scrollTop || 0)+5, |
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| 165 | c = false, //constrain to viewport |
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| 166 | p1 = "", |
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| 167 | p2 = "", |
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| 168 | m = p.match(/^([a-z]+)-([a-z]+)(\?)?$/); |
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| 169 | |
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| 170 | if(!m){ |
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| 171 | throw "Element.alignTo with an invalid alignment " + p; |
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| 172 | } |
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| 173 | |
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| 174 | p1 = m[1]; |
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| 175 | p2 = m[2]; |
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| 176 | c = !!m[3]; |
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| 177 | |
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| 178 | //Subtract the aligned el's internal xy from the target's offset xy |
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| 179 | //plus custom offset to get the aligned el's new offset xy |
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| 180 | a1 = me.getAnchorXY(p1, true); |
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| 181 | a2 = el.getAnchorXY(p2, false); |
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| 182 | |
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| 183 | x = a2[0] - a1[0] + o[0]; |
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| 184 | y = a2[1] - a1[1] + o[1]; |
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| 185 | |
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| 186 | if(c){ |
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| 187 | w = me.getWidth(); |
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| 188 | h = me.getHeight(); |
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| 189 | r = el.getRegion(); |
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| 190 | //If we are at a viewport boundary and the aligned el is anchored on a target border that is |
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| 191 | //perpendicular to the vp border, allow the aligned el to slide on that border, |
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| 192 | //otherwise swap the aligned el to the opposite border of the target. |
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| 193 | p1y = p1.charAt(0); |
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| 194 | p1x = p1.charAt(p1.length-1); |
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| 195 | p2y = p2.charAt(0); |
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| 196 | p2x = p2.charAt(p2.length-1); |
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| 197 | swapY = ((p1y=="t" && p2y=="b") || (p1y=="b" && p2y=="t")); |
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| 198 | swapX = ((p1x=="r" && p2x=="l") || (p1x=="l" && p2x=="r")); |
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| 199 | |
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| 200 | |
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| 201 | if (x + w > dw + scrollX) { |
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| 202 | x = swapX ? r.left-w : dw+scrollX-w; |
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| 203 | } |
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| 204 | if (x < scrollX) { |
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| 205 | x = swapX ? r.right : scrollX; |
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| 206 | } |
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| 207 | if (y + h > dh + scrollY) { |
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| 208 | y = swapY ? r.top-h : dh+scrollY-h; |
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| 209 | } |
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| 210 | if (y < scrollY){ |
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| 211 | y = swapY ? r.bottom : scrollY; |
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| 212 | } |
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| 213 | } |
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| 214 | return [x,y]; |
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| 215 | }, |
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| 216 | |
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| 217 | /** |
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| 218 | * Aligns this element with another element relative to the specified anchor points. If the other element is the |
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| 219 | * document it aligns it to the viewport. |
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| 220 | * The position parameter is optional, and can be specified in any one of the following formats: |
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| 221 | * <ul> |
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| 222 | * <li><b>Blank</b>: Defaults to aligning the element's top-left corner to the target's bottom-left corner ("tl-bl").</li> |
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| 223 | * <li><b>One anchor (deprecated)</b>: The passed anchor position is used as the target element's anchor point. |
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| 224 | * The element being aligned will position its top-left corner (tl) to that point. <i>This method has been |
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| 225 | * deprecated in favor of the newer two anchor syntax below</i>.</li> |
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| 226 | * <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 |
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| 227 | * element's anchor point, and the second value is used as the target's anchor point.</li> |
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| 228 | * </ul> |
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| 229 | * In addition to the anchor points, the position parameter also supports the "?" character. If "?" is passed at the end of |
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| 230 | * the position string, the element will attempt to align as specified, but the position will be adjusted to constrain to |
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| 231 | * the viewport if necessary. Note that the element being aligned might be swapped to align to a different position than |
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| 232 | * that specified in order to enforce the viewport constraints. |
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| 233 | * Following are all of the supported anchor positions: |
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| 234 | <pre> |
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| 235 | Value Description |
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| 236 | ----- ----------------------------- |
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| 237 | tl The top left corner (default) |
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| 238 | t The center of the top edge |
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| 239 | tr The top right corner |
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| 240 | l The center of the left edge |
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| 241 | c In the center of the element |
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| 242 | r The center of the right edge |
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| 243 | bl The bottom left corner |
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| 244 | b The center of the bottom edge |
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| 245 | br The bottom right corner |
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| 246 | </pre> |
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| 247 | Example Usage: |
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| 248 | <pre><code> |
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| 249 | // align el to other-el using the default positioning ("tl-bl", non-constrained) |
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| 250 | el.alignTo("other-el"); |
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| 251 | |
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| 252 | // align the top left corner of el with the top right corner of other-el (constrained to viewport) |
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| 253 | el.alignTo("other-el", "tr?"); |
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| 254 | |
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| 255 | // align the bottom right corner of el with the center left edge of other-el |
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| 256 | el.alignTo("other-el", "br-l?"); |
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| 257 | |
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| 258 | // align the center of el with the bottom left corner of other-el and |
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| 259 | // adjust the x position by -6 pixels (and the y position by 0) |
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| 260 | el.alignTo("other-el", "c-bl", [-6, 0]); |
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| 261 | </code></pre> |
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| 262 | * @param {Mixed} element The element to align to. |
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| 263 | * @param {String} position (optional, defaults to "tl-bl?") The position to align to. |
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| 264 | * @param {Array} offsets (optional) Offset the positioning by [x, y] |
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| 265 | * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object |
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| 266 | * @return {Ext.Element} this |
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| 267 | */ |
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| 268 | alignTo : function(element, position, offsets, animate){ |
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| 269 | var me = this; |
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| 270 | return me.setXY(me.getAlignToXY(element, position, offsets), |
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| 271 | me.preanim && !!animate ? me.preanim(arguments, 3) : false); |
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| 272 | }, |
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| 273 | |
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| 274 | // private ==> used outside of core |
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| 275 | adjustForConstraints : function(xy, parent, offsets){ |
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| 276 | return this.getConstrainToXY(parent || document, false, offsets, xy) || xy; |
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| 277 | }, |
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| 278 | |
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| 279 | // private ==> used outside of core |
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| 280 | getConstrainToXY : function(el, local, offsets, proposedXY){ |
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| 281 | var os = {top:0, left:0, bottom:0, right: 0}; |
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| 282 | |
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| 283 | return function(el, local, offsets, proposedXY){ |
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| 284 | el = Ext.get(el); |
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| 285 | offsets = offsets ? Ext.applyIf(offsets, os) : os; |
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| 286 | |
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| 287 | var vw, vh, vx = 0, vy = 0; |
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| 288 | if(el.dom == document.body || el.dom == document){ |
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| 289 | vw =Ext.lib.Dom.getViewWidth(); |
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| 290 | vh = Ext.lib.Dom.getViewHeight(); |
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| 291 | }else{ |
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| 292 | vw = el.dom.clientWidth; |
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| 293 | vh = el.dom.clientHeight; |
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| 294 | if(!local){ |
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| 295 | var vxy = el.getXY(); |
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| 296 | vx = vxy[0]; |
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| 297 | vy = vxy[1]; |
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| 298 | } |
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| 299 | } |
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| 300 | |
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| 301 | var s = el.getScroll(); |
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| 302 | |
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| 303 | vx += offsets.left + s.left; |
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| 304 | vy += offsets.top + s.top; |
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| 305 | |
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| 306 | vw -= offsets.right; |
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| 307 | vh -= offsets.bottom; |
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| 308 | |
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| 309 | var vr = vx + vw, |
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| 310 | vb = vy + vh, |
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| 311 | xy = proposedXY || (!local ? this.getXY() : [this.getLeft(true), this.getTop(true)]), |
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| 312 | x = xy[0], y = xy[1], |
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| 313 | offset = this.getConstrainOffset(), |
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| 314 | w = this.dom.offsetWidth + offset, |
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| 315 | h = this.dom.offsetHeight + offset; |
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| 316 | |
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| 317 | // only move it if it needs it |
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| 318 | var moved = false; |
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| 319 | |
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| 320 | // first validate right/bottom |
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| 321 | if((x + w) > vr){ |
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| 322 | x = vr - w; |
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| 323 | moved = true; |
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| 324 | } |
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| 325 | if((y + h) > vb){ |
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| 326 | y = vb - h; |
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| 327 | moved = true; |
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| 328 | } |
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| 329 | // then make sure top/left isn't negative |
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| 330 | if(x < vx){ |
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| 331 | x = vx; |
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| 332 | moved = true; |
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| 333 | } |
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| 334 | if(y < vy){ |
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| 335 | y = vy; |
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| 336 | moved = true; |
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| 337 | } |
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| 338 | return moved ? [x, y] : false; |
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| 339 | }; |
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| 340 | }(), |
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| 341 | |
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| 342 | |
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| 343 | |
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| 344 | // el = Ext.get(el); |
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| 345 | // offsets = Ext.applyIf(offsets || {}, {top : 0, left : 0, bottom : 0, right : 0}); |
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| 346 | |
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| 347 | // var me = this, |
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| 348 | // doc = document, |
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| 349 | // s = el.getScroll(), |
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| 350 | // vxy = el.getXY(), |
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| 351 | // vx = offsets.left + s.left, |
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| 352 | // vy = offsets.top + s.top, |
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| 353 | // vw = -offsets.right, |
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| 354 | // vh = -offsets.bottom, |
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| 355 | // vr, |
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| 356 | // vb, |
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| 357 | // xy = proposedXY || (!local ? me.getXY() : [me.getLeft(true), me.getTop(true)]), |
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| 358 | // x = xy[0], |
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| 359 | // y = xy[1], |
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| 360 | // w = me.dom.offsetWidth, h = me.dom.offsetHeight, |
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| 361 | // moved = false; // only move it if it needs it |
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| 362 | // |
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| 363 | // |
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| 364 | // if(el.dom == doc.body || el.dom == doc){ |
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| 365 | // vw += Ext.lib.Dom.getViewWidth(); |
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| 366 | // vh += Ext.lib.Dom.getViewHeight(); |
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| 367 | // }else{ |
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| 368 | // vw += el.dom.clientWidth; |
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| 369 | // vh += el.dom.clientHeight; |
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| 370 | // if(!local){ |
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| 371 | // vx += vxy[0]; |
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| 372 | // vy += vxy[1]; |
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| 373 | // } |
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| 374 | // } |
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| 375 | |
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| 376 | // // first validate right/bottom |
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| 377 | // if(x + w > vx + vw){ |
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| 378 | // x = vx + vw - w; |
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| 379 | // moved = true; |
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| 380 | // } |
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| 381 | // if(y + h > vy + vh){ |
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| 382 | // y = vy + vh - h; |
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| 383 | // moved = true; |
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| 384 | // } |
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| 385 | // // then make sure top/left isn't negative |
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| 386 | // if(x < vx){ |
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| 387 | // x = vx; |
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| 388 | // moved = true; |
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| 389 | // } |
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| 390 | // if(y < vy){ |
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| 391 | // y = vy; |
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| 392 | // moved = true; |
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| 393 | // } |
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| 394 | // return moved ? [x, y] : false; |
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| 395 | // }, |
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| 396 | |
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| 397 | // private, used internally |
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| 398 | getConstrainOffset : function(){ |
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| 399 | return 0; |
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| 400 | }, |
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| 401 | |
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| 402 | /** |
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| 403 | * Calculates the x, y to center this element on the screen |
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| 404 | * @return {Array} The x, y values [x, y] |
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| 405 | */ |
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| 406 | getCenterXY : function(){ |
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| 407 | return this.getAlignToXY(document, 'c-c'); |
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| 408 | }, |
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| 409 | |
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| 410 | /** |
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| 411 | * Centers the Element in either the viewport, or another Element. |
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| 412 | * @param {Mixed} centerIn (optional) The element in which to center the element. |
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| 413 | */ |
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| 414 | center : function(centerIn){ |
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| 415 | return this.alignTo(centerIn || document, 'c-c'); |
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| 416 | } |
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| 417 | }); |
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