source: sandbox/2.3-MailArchiver/expressoMail1_2/js/lert/lert.js @ 6779

/*
* Lert v1.0
* by Jeffrey Sambells - http://JeffreySambells.com
* For more information on this script, visit http://JeffreySambells.com/openprojects/lert/
* Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
* Icons from Tango Desktop Project http://tango.freedesktop.org/Tango_Desktop_Project
*/
function Lert(title, message, buttons, options) {
        this.title_ = title;
        this.message_ = message;
        this.buttons_ = buttons;
        this.defaultButton_ = options.defaultButton || this.buttons_[0];
        this.icon_ = options.icon || null;
}

Lert.prototype.display = function() {
        var body = document.getElementsByTagName ('BODY')[0];
        //create the overlay if necessary
        var overlay = document.getElementById('lertOverlay');
        if(!overlay) {
                var overlay = document.createElement("div");
                overlay.setAttribute('id','lertOverlay');
                overlay.style.display = 'none';
                body.appendChild(overlay);
        }

        //position and show the overlay
        overlay.style.height='100%';
        overlay.style.display='block';

        //create the container if necessary
        var container = document.getElementById('lertContainer');
        if(!container) {
                var container = document.createElement("div");
                container.setAttribute('id','lertContainer');
                container.style.display = 'none';
                body.appendChild(container);
        }

        //position and show the container
        container.style.top = '35%';
        container.style.display = 'block';

        //create the window
        var win = document.createElement('div');
        win.setAttribute('id','lertWindow');

        var topBorder = document.createElement('div');
        topBorder.setAttribute('id','topBorder');
        topBorder.innerHTML = this.title_;
        var iconClose = document.createElement('img');
            iconClose.setAttribute('src', 'js/lert/images/close_button.gif');
            iconClose.setAttribute('id','closeIcon');
            iconClose.setAttribute('alt','');
            iconClose.setAttribute('style','cursor: pointer;');
            iconClose.setAttribute('onclick', "document.getElementById('lertOverlay').style.display='none';document.getElementById('lertContainer').style.display='none';document.getElementById('lertContainer').innerHTML = '';");
        topBorder.appendChild(iconClose);
        win.appendChild(topBorder);
        //create the optional icon
        if(this.icon_ != null) {
                var icon = document.createElement('img');
                icon.setAttribute('src',this.icon_);

                icon.setAttribute('id','lertIcon');
                icon.setAttribute('alt','');
                win.appendChild(icon);
        }

        //create the message space
        var message = document.createElement('p');
        message.setAttribute('id','lertMessage');
        message.innerHTML = this.message_;
        win.appendChild(message);

        //create the button space
        var buttons = document.createElement('div');
        buttons.setAttribute('id','lertButtons');

        var oldKeyDown = document.onkeydown;

        //add each button
        for(i in this.buttons_) {
                var button = this.buttons_[i];
                if(button.getDom) {
                        var domButton = button.getDom(function() {
                                container.style.display = 'none';
                                overlay.style.display = 'none';
                                document.onkeydown=oldKeyDown;
                                container.innerHTML = '';
                                button.onclick_;
                        },this.defaultButton_);
                        buttons.appendChild(domButton);
                }
        }
        win.appendChild(buttons);

        document.onkeydown = this.keyboardControls;

        //append the window
        container.appendChild(win);

}

Lert.prototype.keyboardControls = function(e) {
        if (e == null) { keycode = event.keyCode; } // ie
        else { keycode = e.which; } // mozilla
        if(keycode==13){ 
                document.getElementById('lertDefaultButton').onclick();
        }
}

function LertButton(label, event, options) {
        this.label_ = label;
        this.onclick_ = event;
        this.eventClick = function() {};
}

LertButton.prototype.getDom = function(eventCleanup,defaultButton) {
        var button = document.createElement('a');
        //button.setAttribute('href','javascript:void(0);');
        button.className = 'lertButton';
        if(this == defaultButton) button.setAttribute('id','lertDefaultButton');
        button.innerHTML = this.label_;

        var eventOnclick =  this.onclick_;
        button.onclick = function() {
                eventCleanup();
                eventOnclick();
        }
        this.eventClick = button.onclick;
        return button;
}