/*! - * Ext JS Library 3.3.1 - * Copyright(c) 2006-2010 Sencha Inc. - * licensing@sencha.com - * http://www.sencha.com/license - */ -/** - * @class Ext.layout.CardLayout - * @extends Ext.layout.FitLayout - *- - \ No newline at end of fileThis layout manages multiple child Components, each fitted to the Container, where only a single child Component can be - * visible at any given time. This layout style is most commonly used for wizards, tab implementations, etc. - * This class is intended to be extended or created via the layout:'card' {@link Ext.Container#layout} config, - * and should generally not need to be created directly via the new keyword.
- *The CardLayout's focal method is {@link #setActiveItem}. Since only one panel is displayed at a time, - * the only way to move from one Component to the next is by calling setActiveItem, passing the id or index of - * the next panel to display. The layout itself does not provide a user interface for handling this navigation, - * so that functionality must be provided by the developer.
- *In the following example, a simplistic wizard setup is demonstrated. A button bar is added - * to the footer of the containing panel to provide navigation buttons. The buttons will be handled by a - * common navigation routine -- for this example, the implementation of that routine has been ommitted since - * it can be any type of custom logic. Note that other uses of a CardLayout (like a tab control) would require a - * completely different implementation. For serious implementations, a better approach would be to extend - * CardLayout to provide the custom functionality needed. Example usage:
- *- */ -Ext.layout.CardLayout = Ext.extend(Ext.layout.FitLayout, { - /** - * @cfg {Boolean} deferredRender - * True to render each contained item at the time it becomes active, false to render all contained items - * as soon as the layout is rendered (defaults to false). If there is a significant amount of content or - * a lot of heavy controls being rendered into panels that are not displayed by default, setting this to - * true might improve performance. - */ - deferredRender : false, - - /** - * @cfg {Boolean} layoutOnCardChange - * True to force a layout of the active item when the active card is changed. Defaults to false. - */ - layoutOnCardChange : false, - - /** - * @cfg {Boolean} renderHidden @hide - */ - // private - renderHidden : true, - - type: 'card', - - /** - * Sets the active (visible) item in the layout. - * @param {String/Number} item The string component id or numeric index of the item to activate - */ - setActiveItem : function(item){ - var ai = this.activeItem, - ct = this.container; - item = ct.getComponent(item); - - // Is this a valid, different card? - if(item && ai != item){ - - // Changing cards, hide the current one - if(ai){ - ai.hide(); - if (ai.hidden !== true) { - return false; - } - ai.fireEvent('deactivate', ai); - } - - var layout = item.doLayout && (this.layoutOnCardChange || !item.rendered); - - // Change activeItem reference - this.activeItem = item; - - // The container is about to get a recursive layout, remove any deferLayout reference - // because it will trigger a redundant layout. - delete item.deferLayout; - - // Show the new component - item.show(); - - this.layout(); - - if(layout){ - item.doLayout(); - } - item.fireEvent('activate', item); - } - }, - - // private - renderAll : function(ct, target){ - if(this.deferredRender){ - this.renderItem(this.activeItem, undefined, target); - }else{ - Ext.layout.CardLayout.superclass.renderAll.call(this, ct, target); - } - } -}); -Ext.Container.LAYOUTS['card'] = Ext.layout.CardLayout; --var navHandler = function(direction){ - // This routine could contain business logic required to manage the navigation steps. - // It would call setActiveItem as needed, manage navigation button state, handle any - // branching logic that might be required, handle alternate actions like cancellation - // or finalization, etc. A complete wizard implementation could get pretty - // sophisticated depending on the complexity required, and should probably be - // done as a subclass of CardLayout in a real-world implementation. -}; - -var card = new Ext.Panel({ - title: 'Example Wizard', - layout:'card', - activeItem: 0, // make sure the active item is set on the container config! - bodyStyle: 'padding:15px', - defaults: { - // applied to each contained panel - border:false - }, - // just an example of one possible navigation scheme, using buttons - bbar: [ - { - id: 'move-prev', - text: 'Back', - handler: navHandler.createDelegate(this, [-1]), - disabled: true - }, - '->', // greedy spacer so that the buttons are aligned to each side - { - id: 'move-next', - text: 'Next', - handler: navHandler.createDelegate(this, [1]) - } - ], - // the panels (or "cards") within the layout - items: [{ - id: 'card-0', - html: '<h1>Welcome to the Wizard!</h1><p>Step 1 of 3</p>' - },{ - id: 'card-1', - html: '<p>Step 2 of 3</p>' - },{ - id: 'card-2', - html: '<h1>Congratulations!</h1><p>Step 3 of 3 - Complete</p>' - }] -}); -