/** * A modal, floating Component which may be shown above a specified {@link Ext.Component Component} while loading data. * When shown, the configured owning Component will be covered with a modality mask, and the LoadMask's {@link #msg} will be * displayed centered, accompanied by a spinner image. * * If the {@link #store} config option is specified, the masking will be automatically shown and then hidden synchronized with * the Store's loading process. * * Because this is a floating Component, its z-index will be managed by the global {@link Ext.WindowManager ZIndexManager} * object, and upon show, it will place itsef at the top of the hierarchy. * * Example usage: * * @example * var myPanel = new Ext.panel.Panel({ * renderTo : document.body, * height : 100, * width : 200, * title : 'Foo' * }); * * var myMask = new Ext.LoadMask({ * msg : 'Please wait...', * target : myPanel * }); * * myMask.show(); */Ext.define('Ext.LoadMask', { extend: 'Ext.Component', alias: 'widget.loadmask', /* Begin Definitions */ mixins: [ 'Ext.util.StoreHolder' ], uses: ['Ext.data.StoreManager'], /* End Definitions */ /** * @property {Boolean} isLoadMask * `true` in this class to identify an object as an instantiated LoadMask, or subclass thereof. */ isLoadMask: true, /** * @cfg {Ext.Component} target The Component you wish to mask. The the mask will be automatically sized * upon Component resize, and the message box will be kept centered. */ /** * @cfg {Ext.data.Store} store * Optional Store to which the mask is bound. The mask is displayed when a load request is issued, and * hidden on either load success, or load fail. */ //<locale> /** * @cfg {String} [msg="Loading..."] * The text to display in a centered loading message box. */ msg: 'Loading...', //</locale> /** * @cfg {String} [msgCls="x-mask-loading"] * The CSS class to apply to the loading message element. */ msgCls: Ext.baseCSSPrefix + 'mask-loading', /** * @cfg {String} [maskCls="x-mask"] * The CSS class to apply to the mask element */ maskCls: Ext.baseCSSPrefix + 'mask', cls: Ext.baseCSSPrefix + 'mask-msg', /** * @cfg {Boolean} [useMsg=true] * Whether or not to use a loading message class or simply mask the bound element. */ useMsg: true, /** * @cfg {Boolean} [useTargetEl=false] * True to mask the {@link Ext.Component#getTargetEl targetEl} of the bound Component. By default, * the {@link Ext.Component#getEl el} will be masked. */ useTargetEl: false, ariaRole: 'presentation', childEls: [ 'msgEl', 'msgTextEl' ], renderTpl: [ '<div id="{id}-msgEl" data-ref="msgEl" role="{role}"', '<tpl if="ariaAttr"> {ariaAttr}</tpl>', ' class="{[values.$comp.msgCls]} ', Ext.baseCSSPrefix, 'mask-msg-inner {childElCls}">', '<div id="{id}-msgTextEl" data-ref="msgTextEl" class="', Ext.baseCSSPrefix ,'mask-msg-text', '{childElCls}">{msg}</div>', '</div>' ], /** * Creates new LoadMask. * @param {Object} [config] The config object. */ constructor : function(config) { var me = this, comp; if (arguments.length === 2) { //<debug> if (Ext.isDefined(Ext.global.console)) { Ext.global.console.warn('Ext.LoadMask: LoadMask now uses a standard 1 arg constructor: use the target config'); } //</debug> comp = me.target = config; config = arguments[1]; } else { comp = config.target; } // Must apply configs early so that renderTo can be calculated correctly. me.callParent([config]); // Target is a Component if (comp.isComponent) { me.ownerCt = comp; me.hidden = true; // Ask the component which element should be masked. // Most will not have an answer, in which case this returns the document body // Ext.view.Table for example returns the el of its owning Panel. me.renderTo = me.getMaskTarget(); me.external = me.renderTo === Ext.getBody(); me.bindComponent(comp); } // Element support to be deprecated else { //<debug> if (Ext.isDefined(Ext.global.console)) { Ext.global.console.warn('Ext.LoadMask: LoadMask for elements has been deprecated, use Ext.dom.Element.mask & Ext.dom.Element.unmask'); } //</debug> comp = Ext.get(comp); me.isElement = true; me.renderTo = me.target; } me.render(me.renderTo); if (me.store) { me.bindStore(me.store, true); } }, // A mask consists of 2 simultaneously shown/sized/positioned elements. getRenderTree: function() { return [ { cls: this.maskCls, style: 'display:none' }, this.callParent() ]; }, onRender: function() { this.callParent(arguments); this.maskEl = this.el.prev(); }, initRenderData: function() { var result = this.callParent(arguments); result.msg = this.msg || ''; return result; }, bindComponent: function(comp) { var me = this, listeners = { scope: this, resize: me.sizeMask }; if (me.external) { listeners.added = me.onComponentAdded; listeners.removed = me.onComponentRemoved; if (comp.floating) { listeners.move = me.sizeMask; me.activeOwner = comp; } else if (comp.ownerCt) { me.onComponentAdded(comp.ownerCt); } } me.mon(comp, listeners); // Subscribe to the observer that manages the hierarchy // Only needed if we had to be rendered outside of the target if (me.external) { me.mon(Ext.GlobalEvents, { show: me.onContainerShow, hide: me.onContainerHide, expand: me.onContainerExpand, collapse: me.onContainerCollapse, scope: me }); } }, onComponentAdded: function(owner) { var me = this; delete me.activeOwner; me.floatParent = owner; if (!owner.floating) { owner = owner.up('[floating]'); } if (owner) { me.activeOwner = owner; me.mon(owner, 'move', me.sizeMask, me); me.mon(owner, 'tofront', me.onOwnerToFront, me); } else { me.preventBringToFront = true; } owner = me.floatParent.ownerCt; if (me.rendered && me.isVisible() && owner) { me.floatOwner = owner; me.mon(owner, 'afterlayout', me.sizeMask, me, {single: true}); } }, onComponentRemoved: function(owner) { var me = this, activeOwner = me.activeOwner, floatOwner = me.floatOwner; if (activeOwner) { me.mun(activeOwner, 'move', me.sizeMask, me); me.mun(activeOwner, 'tofront', me.onOwnerToFront, me); } if (floatOwner) { me.mun(floatOwner, 'afterlayout', me.sizeMask, me); } delete me.activeOwner; delete me.floatOwner; }, afterRender: function() { this.callParent(arguments); // This LoadMask shares the DOM and may be tipped out by the use of innerHTML // Ensure the element does not get garbage collected from under us. this.el.skipGarbageCollection = true; this.maskEl.skipGarbageCollection = true; }, onOwnerToFront: function(owner, zIndex) { this.maskEl.setStyle('zIndex', zIndex + 1); this.el.setStyle('zIndex', zIndex + 2); }, // Only called if wer are rendered external to the target. // Best we can do is show. onContainerShow: function(container) { this.onComponentShow(); }, // Only called if wer are rendered external to the target. // Best we can do is hide. onContainerHide: function(container) { this.onComponentHide(); }, // Only called if wer are rendered external to the target. // Best we can do is show. onContainerExpand: function(container) { this.onComponentShow(); }, // Only called if wer are rendered external to the target. // Best we can do is hide. onContainerCollapse: function(container) { this.onComponentHide(); }, onComponentHide: function() { var me = this; if (me.rendered && me.isVisible()) { me.hide(); me.showNext = true; } }, onComponentShow: function() { if (this.showNext) { this.show(); } delete this.showNext; }, /** * @private * Called when this LoadMask's Component is resized. The toFront method rebases and resizes the modal mask. */ sizeMask: function() { var me = this, target = me.target, boxTarget = me.external ? me.getOwner().el : me.getMaskTarget(); if (me.rendered && me.isVisible()) { // Only need to move and size the maskEl if we are outside of // the masked element. // If we are inside, it will be left:0;top:0;width:100%;height:100% by defult if (me.external) { if (!me.isElement && target.floating) { me.onOwnerToFront(target, target.el.getZIndex()); } me.maskEl.setSize(boxTarget.getSize()).alignTo(boxTarget, 'tl-tl'); } // Always need to center the main element. me.el.center(me.maskEl); } }, /** * Changes the data store bound to this LoadMask. * @param {Ext.data.Store} store The store to bind to this LoadMask */ bindStore : function(store, initial) { var me = this; me.mixins.storeholder.bindStore.apply(me, arguments); store = me.store; if (store && store.isLoading()) { me.onBeforeLoad(); } }, getStoreListeners: function(store) { var load = this.onLoad, beforeLoad = this.onBeforeLoad, result = { // Fired when a range is requested for rendering that is not in the cache cachemiss: beforeLoad, // Fired when a range for rendering which was previously missing from the cache is loaded cachefilled: load }; // Only need to mask on load if the proxy is asynchronous - ie: Ajax/JsonP if (!store.proxy.isSynchronous) { result.beforeload = beforeLoad; result.load = load; } return result; }, onDisable : function() { this.callParent(arguments); if (this.loading) { this.onLoad(); } }, getOwner: function() { return this.ownerCt || this.ownerCmp || this.floatParent; }, getMaskTarget: function() { var owner = this.getOwner(); if (this.isElement) { return this.target; } return this.useTargetEl ? owner.getTargetEl() : (owner.getMaskTarget() || Ext.getBody()); }, // @private onBeforeLoad : function() { var me = this, owner = me.getOwner(), origin; if (!me.disabled) { me.loading = true; // If the owning Component has not been layed out, defer so that the ZIndexManager // gets to read its layed out size when sizing the modal mask if (owner.componentLayoutCounter) { me.maybeShow(); } else { // The code below is a 'run-once' interceptor. origin = owner.afterComponentLayout; owner.afterComponentLayout = function() { owner.afterComponentLayout = origin; origin.apply(owner, arguments); me.maybeShow(); }; } } }, maybeShow: function() { var me = this, owner = me.getOwner(); if (!owner.isVisible(true)) { me.showNext = true; } else if (me.loading && owner.rendered) { me.show(); } }, hide: function() { var me = this; // Element support to be deprecated if (me.isElement) { me.ownerCt.unmask(); me.fireEvent('hide', this); return; } else { me.ownerCt.enableTabbing(); } delete me.showNext; me.maskEl.setDisplayed(false); me.ownerCt.setMasked(false); return me.callParent(arguments); }, show: function() { var me = this; // Element support to be deprecated if (me.isElement) { me.ownerCt.mask(this.useMsg ? this.msg : '', this.msgCls); me.fireEvent('show', this); return; } else { me.ownerCt.disableTabbing(); } me.maskEl.setDisplayed(true); me.ownerCt.setMasked(true); return me.callParent(arguments); }, afterShow: function() { var me = this; me.loading = true; me.callParent(arguments); // Allow dynamic setting of maskCls if (me.hasOwnProperty('maskCls')) { me.maskEl.dom.className = me.maskCls; } if (me.useMsg) { me.msgTextEl.setHtml(me.msg); } else { // Only the mask is visible if useMsg is false me.el.hide(); } me.sizeMask(); }, // @private onLoad : function() { this.loading = false; this.hide(); }, beforeDestroy: function() { // We don't have a real ownerCt, so clear it out here to prevent // spurious warnings when we are destroyed this.ownerCt = null; this.bindStore(null); this.callParent(); }, onDestroy: function() { var me = this; if (me.isElement) { me.ownerCt.unmask(); } Ext.destroy(me.maskEl); me.callParent(); }});