/**
Kailash Nadh,	http://kailashnadh.name
August 2009
Smooth popup dialog for jQuery

License:	GNU Public License: http://www.fsf.org/copyleft/gpl.html
	
v1.2	September 2 2009
**/

var jqDialog = new function() {

    //________button / control labels
    this.strOk = 'Ok';
    this.strYes = 'Yes';
    this.strNo = 'No';
    this.strCancel = 'Cancel';
    this.strX = 'X';


    //________
    this.closeTimer = null;
    this.width = 0; this.height = 0;

    this.divBoxName = 'jqDialog_box'; this.divBox = null;
    this.divContentName = 'jqDialog_content'; this.divContent = null;
    this.divOptionsName = 'jqDialog_options'; this.divOptions = null;
    this.btCloseName = 'jqDialog_close'; this.btClose = null;
    this.btYesName = 'jqDialog_yes'; this.btYes = null;
    this.btNoName = 'jqDialog_no'; this.btNo = null;
    this.btOkName = 'jqDialog_ok'; this.btOk = null;
    this.btCancel = 'jqDialog_ok'; this.btCancel = null;
    this.inputName = 'jqDialog_input'; this.input = null;


    //________create a confirm box
    this.confirm = function(message, callback_yes, callback_no) {
        this.createDialog(message);
        this.btYes.show(); this.btNo.show(); this.btYes.focus();
        this.btOk.hide(); this.btCancel.hide();
        // just redo this everytime in case a new callback is presented
        this.btYes.unbind().click(function() {
            jqDialog.close();
            if (callback_yes) callback_yes();
        });

        this.btNo.unbind().click(function() {
            jqDialog.close();
            if (callback_no) callback_no();
        });

    };

    //________prompt dialog
    this.prompt = function(message, content, callback_ok, callback_cancel) {
        this.createDialog($("<p>").append(message).append($("<p>").append($(this.input).val(content))));

        this.btYes.hide(); this.btNo.hide();
        this.btOk.show(); this.input.focus(); this.btCancel.show();

        // just redo this everytime in case a new callback is presented
        this.btOk.unbind().click(function() {
            jqDialog.close();
            if (callback_ok) callback_ok(jqDialog.input.val());
        });

        this.btCancel.unbind().click(function() {
            jqDialog.close();
            if (callback_cancel) callback_cancel();
        });

    };

    //________create an alert box
    this.alert = function(content, callback_ok) {
        this.createDialog(content);
        this.btCancel.hide(); this.btYes.hide(); this.btNo.hide(); this.btOk.show();
        this.btOk.focus();

        // just redo this everytime in case a new callback is presented
        this.btOk.unbind().click(function() {
            jqDialog.close();
            if (callback_ok)
                callback_ok();
        });
    };


    //________create a dialog with custom content
    this.content = function(content, close_seconds) {
        this.createDialog(content);
        this.divOptions.hide();
    };

    //________create an auto-hiding notification
    this.notify = function(content, close_seconds) {
        this.content(content);
        this.btClose.focus();
        if (close_seconds)
            this.closeTimer = setTimeout(function() { jqDialog.close(); }, close_seconds * 1000);
    };

    //________dialog control
    this.createDialog = function(content) {
        clearTimeout(this.closeTimer);
        this.divOptions.show();
        this.divContent.html(content);
        this.divBox.fadeIn('slow');
        this.maintainPosition();
    };

    this.close = function() {
        this.divBox.fadeOut('fast');
        this.clearPosition();
    };

    //________position control
    this.clearPosition = function() {
        $(window).scroll().remove();
    };
    this.makeCenter = function() {
        $(jqDialog.divBox).css(
			{
			    top: ((($(window).height() / 2) - (($(jqDialog.divBox).height()) / 2))) + ($(document).scrollTop()) + 'px',
			    left: ((($(window).width() / 2) - (($(jqDialog.divBox).width()) / 2))) + ($(document).scrollLeft()) + 'px'
			    
			}
		);
    };
    this.maintainPosition = function() {
        this.makeCenter();
        $(window).scroll(function() {
            jqDialog.makeCenter();
        });

    }

    this.isOpen = function() {
        return (this.divBox.css("display") != "none");
    }

    //________
    this.init = function() {
        this.divBox = $("<div>").attr({ id: this.divBoxName });
        this.divContent = $("<div>").attr({ id: this.divContentName });
        this.divOptions = $("<div>").attr({ id: this.divOptionsName });
        this.btYes = $("<button>").attr({ id: this.btYesName }).append(document.createTextNode(this.strYes));
        this.btNo = $("<button>").attr({ id: this.btNoName }).append(document.createTextNode(this.strNo));
        this.btOk = $("<button>").attr({ id: this.btOkName }).append(document.createTextNode(this.strOk));
        this.btCancel = $("<button>").attr({ id: this.btCancelName }).append(document.createTextNode(this.strCancel));
        this.input = $("<input>").attr({ id: this.inputName });
        this.btClose = $("<button>").attr({ id: this.btCloseName }).append(document.createTextNode(this.strX)).click(
							function() {
							    jqDialog.close();
							});

        this.divBox.append(this.divContent).append(
			this.divOptions.append(this.btYes).append(this.btNo).append(this.btOk).append(this.btCancel)
		);

        this.divBox.hide();
        $('body').append(this.divBox);
        this.makeCenter();
    };

};

$(window).load(function() {
    jqDialog.init();
});