/**
 * @class Ext.tip.QuickTipManager
 *
 * Provides attractive and customizable tooltips for any element. The QuickTips
 * singleton is used to configure and manage tooltips globally for multiple elements
 * in a generic manner.  To create individual tooltips with maximum customizability,
 * you should consider either {@link Ext.tip.Tip} or {@link Ext.tip.ToolTip}.
 *
 * Quicktips can be configured via tag attributes directly in markup, or by
 * registering quick tips programmatically via the {@link #register} method.
 *
 * The singleton's instance of {@link Ext.tip.QuickTip} is available via
 * {@link #getQuickTip}, and supports all the methods, and all the all the
 * configuration properties of Ext.tip.QuickTip. These settings will apply to all
 * tooltips shown by the singleton.
 *
 * Below is the summary of the configuration properties which can be used.
 * For detailed descriptions see the config options for the {@link Ext.tip.QuickTip QuickTip} class
 *
 * ## QuickTips singleton configs (all are optional)
 *
 *  - `dismissDelay`
 *  - `hideDelay`
 *  - `maxWidth`
 *  - `minWidth`
 *  - `showDelay`
 *  - `trackMouse`
 *
 * ## Target element configs (optional unless otherwise noted)
 *
 *  - `autoHide`
 *  - `cls`
 *  - `dismissDelay` (overrides singleton value)
 *  - `target` (required)
 *  - `text` (required)
 *  - `title`
 *  - `width`
 *
 * Here is an example showing how some of these config options could be used:
 *
 *     @example
 *     // Init the singleton.  Any tag-based quick tips will start working.
 *     Ext.tip.QuickTipManager.init();
 *
 *     // Apply a set of config properties to the singleton
 *     Ext.apply(Ext.tip.QuickTipManager.getQuickTip(), {
 *         maxWidth: 200,
 *         minWidth: 100,
 *         showDelay: 50      // Show 50ms after entering target
 *     });
 *
 *     // Create a small panel to add a quick tip to
 *     Ext.create('Ext.container.Container', {
 *         id: 'quickTipContainer',
 *         width: 200,
 *         height: 150,
 *         style: {
 *             backgroundColor:'#000000'
 *         },
 *         renderTo: Ext.getBody()
 *     });
 *
 *
 *     // Manually register a quick tip for a specific element
 *     Ext.tip.QuickTipManager.register({
 *         target: 'quickTipContainer',
 *         title: 'My Tooltip',
 *         text: 'This tooltip was added in code',
 *         width: 100,
 *         dismissDelay: 10000 // Hide after 10 seconds hover
 *     });
 *
 * To register a quick tip in markup, you simply add one or more of the valid QuickTip attributes prefixed with
 * the **data-** namespace.  The HTML element itself is automatically set as the quick tip target. Here is the summary
 * of supported attributes (optional unless otherwise noted):
 *
 *  - `hide`: Specifying "user" is equivalent to setting autoHide = false.  Any other value will be the same as autoHide = true.
 *  - `qclass`: A CSS class to be applied to the quick tip (equivalent to the 'cls' target element config).
 *  - `qtip (required)`: The quick tip text (equivalent to the 'text' target element config).
 *  - `qtitle`: The quick tip title (equivalent to the 'title' target element config).
 *  - `qwidth`: The quick tip width (equivalent to the 'width' target element config).
 *
 * Here is an example of configuring an HTML element to display a tooltip from markup:
 *
 *     // Add a quick tip to an HTML button
 *     <input type="button" value="OK" data-qtitle="OK Button" data-qwidth="100"
 *          data-qtip="This is a quick tip from markup!"></input>
 *
 * @singleton
 */
Ext.define('Ext.tip.QuickTipManager', function() {
    var tip,
        disabled = false;

    return {
        requires: ['Ext.tip.QuickTip'],
        singleton: true,
        alternateClassName: 'Ext.QuickTips',

        /**
         * Initialize the global QuickTips instance and prepare any quick tips.
         * @param {Boolean} autoRender (optional) True to render the QuickTips container immediately to
         * preload images. (Defaults to true)
         * @param {Object} config (optional) config object for the created QuickTip. By
         * default, the {@link Ext.tip.QuickTip QuickTip} class is instantiated, but this can
         * be changed by supplying an xtype property or a className property in this object.
         * All other properties on this object are configuration for the created component.
         */
        init : function (autoRender, config) {
            if (!tip) {
                if (!Ext.isReady) {
                    Ext.onReady(function(){
                        Ext.tip.QuickTipManager.init(autoRender);
                    });
                    return;
                }

                var tipConfig = Ext.apply({ disabled: disabled }, config),
                    className = tipConfig.className,
                    xtype = tipConfig.xtype;

                if (className) {
                    delete tipConfig.className;
                } else if (xtype) {
                    className = 'widget.' + xtype;
                    delete tipConfig.xtype;
                }

                if (autoRender !== false) {
                    tipConfig.renderTo = document.body;

                    //<debug>
                    if (tipConfig.renderTo.tagName != 'BODY') { // e.g., == 'FRAMESET'
                        Ext.Error.raise({
                            sourceClass: 'Ext.tip.QuickTipManager',
                            sourceMethod: 'init',
                            msg: 'Cannot init QuickTipManager: no document body'
                        });
                    }
                    //</debug>
                }

                tip = Ext.create(className || 'Ext.tip.QuickTip', tipConfig);
            }
        },

        /**
         * Destroy the QuickTips instance.
         */
        destroy: function() {
            if (tip) {
                var undef;
                tip.destroy();
                tip = undef;
            }
        },

        // Protected method called by the dd classes
        ddDisable : function(){
            // don't disable it if we don't need to
            if(tip && !disabled){
                tip.disable();
            }
        },

        // Protected method called by the dd classes
        ddEnable : function(){
            // only enable it if it hasn't been disabled
            if(tip && !disabled){
                tip.enable();
            }
        },

        /**
         * Enable quick tips globally.
         */
        enable : function(){
            if(tip){
                tip.enable();
            }
            disabled = false;
        },

        /**
         * Disable quick tips globally.
         */
        disable : function(){
            if(tip){
                tip.disable();
            }
            disabled = true;
        },

        /**
         * Returns true if quick tips are enabled, else false.
         * @return {Boolean}
         */
        isEnabled : function(){
            return tip !== undefined && !tip.disabled;
        },

        /**
         * Gets the single {@link Ext.tip.QuickTip QuickTip} instance used to show tips from all registered elements.
         * @return {Ext.tip.QuickTip}
         */
        getQuickTip : function(){
            return tip;
        },

        /**
         * Configures a new quick tip instance and assigns it to a target element.  See
         * {@link Ext.tip.QuickTip#register} for details.
         * @param {Object} config The config object
         */
        register : function(){
            tip.register.apply(tip, arguments);
        },

        /**
         * Removes any registered quick tip from the target element and destroys it.
         * @param {String/HTMLElement/Ext.Element} el The element from which the quick tip is to be removed or ID of the element.
         */
        unregister : function(){
            tip.unregister.apply(tip, arguments);
        },

        /**
         * Alias of {@link #register}.
         * @param {Object} config The config object
         */
        tips : function(){
            tip.register.apply(tip, arguments);
        }
    };
}());