shubhadownloader/ux/Spotlight.js

There is large amount of information available in market place. The markets are always in sync. In today's world investors find it very difficult to make effective use of information available to them. Shubha Downloader is great tool which resolves this problem and helps investor to increase his productivity and stay focused on decision making. Shubha Downloader enable end user to download market data from available sources and organize it. Shubha Downloader is Open source & FREE utility for end users. Shubha Downloader have main features as follows End of the day market data from web to your favorite charting application . Fundamental market data from web to your favorite charting application. Market reports from web to your favorite charting application.

/**
 * @class Ext.ux.Spotlight
 * UX used to provide a spotlight around a specified component/element.
 */
Ext.define('Ext.ux.Spotlight', {
    /**
     * @private
     * The baseCls for the spotlight elements
     */
    baseCls: 'x-spotlight',

    /**
     * @cfg animate {Boolean} True to animate the spotlight change
     * (defaults to true)
     */
    animate: true,

    /**
     * @cfg duration {Integer} The duration of the animation, in milliseconds
     * (defaults to 250)
     */
    duration: 250,

    /**
     * @cfg easing {String} The type of easing for the spotlight animatation
     * (defaults to null)
     */
    easing: null,

    /**
     * @private
     * True if the spotlight is active on the element
     */
    active: false,
    
    constructor: function(config){
        Ext.apply(this, config);
    },

    /**
     * Create all the elements for the spotlight
     */
    createElements: function() {
        var me = this,
            baseCls = me.baseCls,
            body = Ext.getBody();

        me.right = body.createChild({
            cls: baseCls
        });
        me.left = body.createChild({
            cls: baseCls
        });
        me.top = body.createChild({
            cls: baseCls
        });
        me.bottom = body.createChild({
            cls: baseCls
        });

        me.all = Ext.create('Ext.CompositeElement', [me.right, me.left, me.top, me.bottom]);
    },

    /**
     * Show the spotlight
     */
    show: function(el, callback, scope) {
        var me = this;
        
        //get the target element
        me.el = Ext.get(el);

        //create the elements if they don't already exist
        if (!me.right) {
            me.createElements();
        }

        if (!me.active) {
            //if the spotlight is not active, show it
            me.all.setDisplayed('');
            me.active = true;
            Ext.EventManager.onWindowResize(me.syncSize, me);
            me.applyBounds(me.animate, false);
        } else {
            //if the spotlight is currently active, just move it
            me.applyBounds(false, false);
        }
    },

    /**
     * Hide the spotlight
     */
    hide: function(callback, scope) {
        var me = this;
        
        Ext.EventManager.removeResizeListener(me.syncSize, me);

        me.applyBounds(me.animate, true);
    },

    /**
     * Resizes the spotlight with the window size.
     */
    syncSize: function() {
        this.applyBounds(false, false);
    },

    /**
     * Resizes the spotlight depending on the arguments
     * @param {Boolean} animate True to animate the changing of the bounds
     * @param {Boolean} reverse True to reverse the animation
     */
    applyBounds: function(animate, reverse) {
        var me = this,
            box = me.el.getBox(),
            //get the current view width and height
            viewWidth = Ext.Element.getViewWidth(true),
            viewHeight = Ext.Element.getViewHeight(true),
            i = 0,
            config = false,
            from, to, clone;
            
        //where the element should start (if animation)
        from = {
            right: {
                x: box.right,
                y: viewHeight,
                width: (viewWidth - box.right),
                height: 0
            },
            left: {
                x: 0,
                y: 0,
                width: box.x,
                height: 0
            },
            top: {
                x: viewWidth,
                y: 0,
                width: 0,
                height: box.y
            },
            bottom: {
                x: 0,
                y: (box.y + box.height),
                width: 0,
                height: (viewHeight - (box.y + box.height)) + 'px'
            }
        };

        //where the element needs to finish
        to = {
            right: {
                x: box.right,
                y: box.y,
                width: (viewWidth - box.right) + 'px',
                height: (viewHeight - box.y) + 'px'
            },
            left: {
                x: 0,
                y: 0,
                width: box.x + 'px',
                height: (box.y + box.height) + 'px'
            },
            top: {
                x: box.x,
                y: 0,
                width: (viewWidth - box.x) + 'px',
                height: box.y + 'px'
            },
            bottom: {
                x: 0,
                y: (box.y + box.height),
                width: (box.x + box.width) + 'px',
                height: (viewHeight - (box.y + box.height)) + 'px'
            }
        };

        //reverse the objects
        if (reverse) {
            clone = Ext.clone(from);
            from = to;
            to = clone;
        }

        if (animate) {
            Ext.Array.forEach(['right', 'left', 'top', 'bottom'], function(side) {
                me[side].setBox(from[side]);
                me[side].animate({
                    duration: me.duration,
                    easing: me.easing,
                    to: to[side]
                });
            },
            this);
        } else {
            Ext.Array.forEach(['right', 'left', 'top', 'bottom'], function(side) {
                me[side].setBox(Ext.apply(from[side], to[side]));
                me[side].repaint();
            },
            this);
        }
    },

    /**
     * Removes all the elements for the spotlight
     */
    destroy: function() {
        var me = this;
        
        Ext.destroy(me.right, me.left, me.top, me.bottom);
        delete me.el;
        delete me.all;
    }
});