/*!
 * Ext JS Library 3.3.1
 * Copyright(c) 2006-2010 Sencha Inc.
 * licensing@sencha.com
 * http://www.sencha.com/license
 */
/** * @class Ext.Layer * @extends Ext.Element * An extended {@link Ext.Element} object that supports a shadow and shim, constrain to viewport and * automatic maintaining of shadow/shim positions. * @cfg {Boolean} shim False to disable the iframe shim in browsers which need one (defaults to true) * @cfg {String/Boolean} shadow True to automatically create an {@link Ext.Shadow}, or a string indicating the * shadow's display {@link Ext.Shadow#mode}. False to disable the shadow. (defaults to false) * @cfg {Object} dh DomHelper object config to create element with (defaults to {tag: 'div', cls: 'x-layer'}). * @cfg {Boolean} constrain False to disable constrain to viewport (defaults to true) * @cfg {String} cls CSS class to add to the element * @cfg {Number} zindex Starting z-index (defaults to 11000) * @cfg {Number} shadowOffset Number of pixels to offset the shadow (defaults to 4) * @cfg {Boolean} useDisplay * Defaults to use css offsets to hide the Layer. Specify true * to use css style 'display:none;' to hide the Layer. * @constructor * @param {Object} config An object with config options. * @param {String/HTMLElement} existingEl (optional) Uses an existing DOM element. If the element is not found it creates it. */ (function(){ Ext.Layer = function(config, existingEl){ config = config || {}; var dh = Ext.DomHelper, cp = config.parentEl, pel = cp ? Ext.getDom(cp) : document.body; if (existingEl) { this.dom = Ext.getDom(existingEl); } if(!this.dom){ var o = config.dh || {tag: 'div', cls: 'x-layer'}; this.dom = dh.append(pel, o); } if(config.cls){ this.addClass(config.cls); } this.constrain = config.constrain !== false; this.setVisibilityMode(Ext.Element.VISIBILITY); if(config.id){ this.id = this.dom.id = config.id; }else{ this.id = Ext.id(this.dom); } this.zindex = config.zindex || this.getZIndex(); this.position('absolute', this.zindex); if(config.shadow){ this.shadowOffset = config.shadowOffset || 4; this.shadow = new Ext.Shadow({ offset : this.shadowOffset, mode : config.shadow }); }else{ this.shadowOffset = 0; } this.useShim = config.shim !== false && Ext.useShims; this.useDisplay = config.useDisplay; this.hide(); }; var supr = Ext.Element.prototype; // shims are shared among layer to keep from having 100 iframes var shims = []; Ext.extend(Ext.Layer, Ext.Element, { getZIndex : function(){ return this.zindex || parseInt((this.getShim() || this).getStyle('z-index'), 10) || 11000; }, getShim : function(){ if(!this.useShim){ return null; } if(this.shim){ return this.shim; } var shim = shims.shift(); if(!shim){ shim = this.createShim(); shim.enableDisplayMode('block'); shim.dom.style.display = 'none'; shim.dom.style.visibility = 'visible'; } var pn = this.dom.parentNode; if(shim.dom.parentNode != pn){ pn.insertBefore(shim.dom, this.dom); } shim.setStyle('z-index', this.getZIndex()-2); this.shim = shim; return shim; }, hideShim : function(){ if(this.shim){ this.shim.setDisplayed(false); shims.push(this.shim); delete this.shim; } }, disableShadow : function(){ if(this.shadow){ this.shadowDisabled = true; this.shadow.hide(); this.lastShadowOffset = this.shadowOffset; this.shadowOffset = 0; } }, enableShadow : function(show){ if(this.shadow){ this.shadowDisabled = false; this.shadowOffset = this.lastShadowOffset; delete this.lastShadowOffset; if(show){ this.sync(true); } } }, // private // this code can execute repeatedly in milliseconds (i.e. during a drag) so // code size was sacrificed for effeciency (e.g. no getBox/setBox, no XY calls) sync : function(doShow){ var shadow = this.shadow; if(!this.updating && this.isVisible() && (shadow || this.useShim)){ var shim = this.getShim(), w = this.getWidth(), h = this.getHeight(), l = this.getLeft(true), t = this.getTop(true); if(shadow && !this.shadowDisabled){ if(doShow && !shadow.isVisible()){ shadow.show(this); }else{ shadow.realign(l, t, w, h); } if(shim){ if(doShow){ shim.show(); } // fit the shim behind the shadow, so it is shimmed too var shadowAdj = shadow.el.getXY(), shimStyle = shim.dom.style, shadowSize = shadow.el.getSize(); shimStyle.left = (shadowAdj[0])+'px'; shimStyle.top = (shadowAdj[1])+'px'; shimStyle.width = (shadowSize.width)+'px'; shimStyle.height = (shadowSize.height)+'px'; } }else if(shim){ if(doShow){ shim.show(); } shim.setSize(w, h); shim.setLeftTop(l, t); } } }, // private destroy : function(){ this.hideShim(); if(this.shadow){ this.shadow.hide(); } this.removeAllListeners(); Ext.removeNode(this.dom); delete this.dom; }, remove : function(){ this.destroy(); }, // private beginUpdate : function(){ this.updating = true; }, // private endUpdate : function(){ this.updating = false; this.sync(true); }, // private hideUnders : function(negOffset){ if(this.shadow){ this.shadow.hide(); } this.hideShim(); }, // private constrainXY : function(){ if(this.constrain){ var vw = Ext.lib.Dom.getViewWidth(), vh = Ext.lib.Dom.getViewHeight(); var s = Ext.getDoc().getScroll(); var xy = this.getXY(); var x = xy[0], y = xy[1]; var so = this.shadowOffset; var w = this.dom.offsetWidth+so, h = this.dom.offsetHeight+so; // only move it if it needs it var moved = false; // first validate right/bottom if((x + w) > vw+s.left){ x = vw - w - so; moved = true; } if((y + h) > vh+s.top){ y = vh - h - so; moved = true; } // then make sure top/left isn't negative if(x < s.left){ x = s.left; moved = true; } if(y < s.top){ y = s.top; moved = true; } if(moved){ if(this.avoidY){ var ay = this.avoidY; if(y <= ay && (y+h) >= ay){ y = ay-h-5; } } xy = [x, y]; this.storeXY(xy); supr.setXY.call(this, xy); this.sync(); } } return this; }, getConstrainOffset : function(){ return this.shadowOffset; }, isVisible : function(){ return this.visible; }, // private showAction : function(){ this.visible = true; // track visibility to prevent getStyle calls if(this.useDisplay === true){ this.setDisplayed(''); }else if(this.lastXY){ supr.setXY.call(this, this.lastXY); }else if(this.lastLT){ supr.setLeftTop.call(this, this.lastLT[0], this.lastLT[1]); } }, // private hideAction : function(){ this.visible = false; if(this.useDisplay === true){ this.setDisplayed(false); }else{ this.setLeftTop(-10000,-10000); } }, // overridden Element method setVisible : function(v, a, d, c, e){ if(v){ this.showAction(); } if(a && v){ var cb = function(){ this.sync(true); if(c){ c(); } }.createDelegate(this); supr.setVisible.call(this, true, true, d, cb, e); }else{ if(!v){ this.hideUnders(true); } var cb = c; if(a){ cb = function(){ this.hideAction(); if(c){ c(); } }.createDelegate(this); } supr.setVisible.call(this, v, a, d, cb, e); if(v){ this.sync(true); }else if(!a){ this.hideAction(); } } return this; }, storeXY : function(xy){ delete this.lastLT; this.lastXY = xy; }, storeLeftTop : function(left, top){ delete this.lastXY; this.lastLT = [left, top]; }, // private beforeFx : function(){ this.beforeAction(); return Ext.Layer.superclass.beforeFx.apply(this, arguments); }, // private afterFx : function(){ Ext.Layer.superclass.afterFx.apply(this, arguments); this.sync(this.isVisible()); }, // private beforeAction : function(){ if(!this.updating && this.shadow){ this.shadow.hide(); } }, // overridden Element method setLeft : function(left){ this.storeLeftTop(left, this.getTop(true)); supr.setLeft.apply(this, arguments); this.sync(); return this; }, setTop : function(top){ this.storeLeftTop(this.getLeft(true), top); supr.setTop.apply(this, arguments); this.sync(); return this; }, setLeftTop : function(left, top){ this.storeLeftTop(left, top); supr.setLeftTop.apply(this, arguments); this.sync(); return this; }, setXY : function(xy, a, d, c, e){ this.fixDisplay(); this.beforeAction(); this.storeXY(xy); var cb = this.createCB(c); supr.setXY.call(this, xy, a, d, cb, e); if(!a){ cb(); } return this; }, // private createCB : function(c){ var el = this; return function(){ el.constrainXY(); el.sync(true); if(c){ c(); } }; }, // overridden Element method setX : function(x, a, d, c, e){ this.setXY([x, this.getY()], a, d, c, e); return this; }, // overridden Element method setY : function(y, a, d, c, e){ this.setXY([this.getX(), y], a, d, c, e); return this; }, // overridden Element method setSize : function(w, h, a, d, c, e){ this.beforeAction(); var cb = this.createCB(c); supr.setSize.call(this, w, h, a, d, cb, e); if(!a){ cb(); } return this; }, // overridden Element method setWidth : function(w, a, d, c, e){ this.beforeAction(); var cb = this.createCB(c); supr.setWidth.call(this, w, a, d, cb, e); if(!a){ cb(); } return this; }, // overridden Element method setHeight : function(h, a, d, c, e){ this.beforeAction(); var cb = this.createCB(c); supr.setHeight.call(this, h, a, d, cb, e); if(!a){ cb(); } return this; }, // overridden Element method setBounds : function(x, y, w, h, a, d, c, e){ this.beforeAction(); var cb = this.createCB(c); if(!a){ this.storeXY([x, y]); supr.setXY.call(this, [x, y]); supr.setSize.call(this, w, h, a, d, cb, e); cb(); }else{ supr.setBounds.call(this, x, y, w, h, a, d, cb, e); } return this; }, /** * Sets the z-index of this layer and adjusts any shadow and shim z-indexes. The layer z-index is automatically * incremented by two more than the value passed in so that it always shows above any shadow or shim (the shadow * element, if any, will be assigned z-index + 1, and the shim element, if any, will be assigned the unmodified z-index). * @param {Number} zindex The new z-index to set * @return {this} The Layer */ setZIndex : function(zindex){ this.zindex = zindex; this.setStyle('z-index', zindex + 2); if(this.shadow){ this.shadow.setZIndex(zindex + 1); } if(this.shim){ this.shim.setStyle('z-index', zindex); } return this; } }); })();