*/
/**
* @class Ext.LoadMask
- * A simple utility class for generically masking elements while loading data. If the {@link #store}
- * config option is specified, the masking will be automatically synchronized with the store's loading
- * process and the mask element will be cached for reuse.
+ * <p>A modal, floating Component which may be shown above a specified {@link Ext.core.Element Element}, or a specified
+ * {@link Ext.Component Component} while loading data. When shown, the configured owning Element or Component will
+ * be covered with a modality mask, and the LoadMask's {@link #msg} will be displayed centered, accompanied by a spinner image.</p>
+ * <p>If the {@link #store} config option is specified, the masking will be automatically shown and then hidden synchronized with
+ * the Store's loading process.</p>
+ * <p>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.</p>
* <p>Example usage:</p>
* <pre><code>
// Basic mask:
Ext.define('Ext.LoadMask', {
+ extend: 'Ext.Component',
+
+ alias: 'widget.loadmask',
+
/* Begin Definitions */
mixins: {
- observable: 'Ext.util.Observable'
+ floating: 'Ext.util.Floating'
},
- requires: ['Ext.data.StoreManager'],
+ uses: ['Ext.data.StoreManager'],
/* End Definitions */
/**
* @cfg {String} msg
- * The text to display in a centered loading message box (defaults to 'Loading...')
+ * The text to display in a centered loading message box.
*/
msg : 'Loading...',
/**
- * @cfg {String} msgCls
- * The CSS class to apply to the loading message element (defaults to "x-mask-loading")
+ * @cfg {String} [msgCls="x-mask-loading"]
+ * The CSS class to apply to the loading message element.
*/
msgCls : Ext.baseCSSPrefix + 'mask-loading',
useMsg: true,
/**
- * Read-only. True if the mask is currently disabled so that it will not be displayed (defaults to false)
+ * Read-only. True if the mask is currently disabled so that it will not be displayed
* @type Boolean
*/
disabled: false,
+ baseCls: Ext.baseCSSPrefix + 'mask-msg',
+
+ renderTpl: '<div style="position:relative" class="{msgCls}"></div>',
+
+ // Private. The whole point is that there's a mask.
+ modal: true,
+
+ // Private. Obviously, it's floating.
+ floating: {
+ shadow: 'frame'
+ },
+
+ // Private. Masks are not focusable
+ focusOnToFront: false,
+
/**
* Creates new LoadMask.
- * @param {Mixed} el The element, element ID, or DOM node you wish to mask.
- * Also, may be a Component who's element you wish to mask.
- * @param {Object} config (optional) The config object
+ * @param {String/HTMLElement/Ext.Element} el The element, element ID, or DOM node you wish to mask.
+ * <p>Also, may be a {@link Ext.Component Component} who's element you wish to mask. If a Component is specified, then
+ * the mask will be automatically sized upon Component resize, the message box will be kept centered,
+ * and the mask only be visible when the Component is.</p>
+ * @param {Object} [config] The config object
*/
constructor : function(el, config) {
var me = this;
+ // If a Component passed, bind to it.
if (el.isComponent) {
+ me.ownerCt = el;
me.bindComponent(el);
- } else {
- me.el = Ext.get(el);
}
- Ext.apply(me, config);
+ // Create a dumy Component encapsulating the specified Element
+ else {
+ me.ownerCt = new Ext.Component({
+ el: Ext.get(el),
+ rendered: true,
+ componentLayoutCounter: 1
+ });
+ me.container = el;
+ }
+ me.callParent([config]);
- me.addEvents('beforeshow', 'show', 'hide');
if (me.store) {
me.bindStore(me.store, true);
}
- me.mixins.observable.constructor.call(me, config);
+ me.renderData = {
+ msgCls: me.msgCls
+ };
+ me.renderSelectors = {
+ msgEl: 'div'
+ };
},
bindComponent: function(comp) {
- var me = this,
- listeners = {
- resize: me.onComponentResize,
- scope: me
- };
-
- if (comp.el) {
- me.onComponentRender(comp);
- } else {
- listeners.render = {
- fn: me.onComponentRender,
- scope: me,
- single: true
- };
- }
- me.mon(comp, listeners);
+ this.mon(comp, {
+ resize: this.onComponentResize,
+ scope: this
+ });
},
- /**
- * @private
- * Called if we were configured with a Component, and that Component was not yet rendered. Collects the element to mask.
- */
- onComponentRender: function(comp) {
- this.el = comp.getContentTarget();
+ afterRender: function() {
+ this.callParent(arguments);
+ this.container = this.floatParent.getContentTarget();
},
/**
* @private
- * Called when this LoadMask's Component is resized. The isMasked method also re-centers any displayed message.
+ * Called when this LoadMask's Component is resized. The toFront method rebases and resizes the modal mask.
*/
- onComponentResize: function(comp, w, h) {
- this.el.isMasked();
+ onComponentResize: function() {
+ var me = this;
+ if (me.rendered && me.isVisible()) {
+ me.toFront();
+ me.center();
+ }
},
/**
* Changes the data store bound to this LoadMask.
- * @param {Store} store The store to bind to this LoadMask
+ * @param {Ext.data.Store} store The store to bind to this LoadMask
*/
bindStore : function(store, initial) {
var me = this;
load: me.onLoad,
exception: me.onLoad
});
- if(!store) {
+ if (!store) {
me.store = null;
}
}
}
},
- /**
- * Disables the mask to prevent it from being displayed
- */
- disable : function() {
- var me = this;
-
- me.disabled = true;
- if (me.loading) {
- me.onLoad();
- }
- },
-
- /**
- * Enables the mask so that it can be displayed
- */
- enable : function() {
- this.disabled = false;
- },
-
- /**
- * Method to determine whether this LoadMask is currently disabled.
- * @return {Boolean} the disabled state of this LoadMask.
- */
- isDisabled : function() {
- return this.disabled;
- },
-
- // private
- onLoad : function() {
- var me = this;
-
- me.loading = false;
- me.el.unmask();
- me.fireEvent('hide', me, me.el, me.store);
+ onDisable : function() {
+ this.callParent(arguments);
+ if (this.loading) {
+ this.onLoad();
+ }
},
// private
onBeforeLoad : function() {
- var me = this;
-
- if (!me.disabled && !me.loading && me.fireEvent('beforeshow', me, me.el, me.store) !== false) {
- if (me.useMsg) {
- me.el.mask(me.msg, me.msgCls, false);
+ var me = this,
+ owner = me.ownerCt || me.floatParent,
+ origin;
+ if (!this.disabled) {
+ // 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) {
+ Ext.Component.prototype.show.call(me);
} else {
- me.el.mask();
+ // The code below is a 'run-once' interceptor.
+ origin = owner.afterComponentLayout;
+ owner.afterComponentLayout = function() {
+ owner.afterComponentLayout = origin;
+ origin.apply(owner, arguments);
+ if(me.loading) {
+ Ext.Component.prototype.show.call(me);
+ }
+ };
}
-
- me.fireEvent('show', me, me.el, me.store);
- me.loading = true;
}
},
- /**
- * Show this LoadMask over the configured Element.
- */
- show: function() {
- this.onBeforeLoad();
+ onHide: function(){
+ var me = this;
+ me.callParent(arguments);
+ me.showOnParentShow = true;
},
- /**
- * Hide this LoadMask.
- */
- hide: function() {
- this.onLoad();
+ onShow: function() {
+ var me = this,
+ msgEl = me.msgEl;
+
+ me.callParent(arguments);
+ me.loading = true;
+ if (me.useMsg) {
+ msgEl.show().update(me.msg);
+ } else {
+ msgEl.parent().hide();
+ }
+ },
+
+ afterShow: function() {
+ this.callParent(arguments);
+ this.center();
},
// private
- destroy : function() {
- this.hide();
- this.clearListeners();
+ onLoad : function() {
+ this.loading = false;
+ Ext.Component.prototype.hide.call(this);
}
});
-
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