// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gHideSelects = false;
var gLoading = "/_layouts/Bamboo.VideoLibrary/Bamboo.VLib.loading.html";

var gTabIndexes = new Array();
// Pre-defined list of tags we want to disable/enable tabbing into
var gTabbableTags = new Array("A", "BUTTON", "TEXTAREA", "INPUT", "IFRAME");

// If using Mozilla or Firefox, use Tab-key trap.
if (!document.all) {
    document.onkeypress = keyDownHandler;
}

/**
* Override the loading page from loading.html to something else
*/
function setPopUpLoadingPage(loading) {
    gLoading = loading;
}

/**
* Initializes popup code on load.	
*/
function initPopUp() {
    // Add the HTML to the body
    var body = document.getElementsByTagName('body')[0];
    var popmask = document.createElement('div');
    popmask.id = 'popupMask';
    var popcont = document.createElement('div');
    popcont.id = 'popupContainer';
    popcont.innerHTML = '' +
		'<div id="popupInner" class="ms-viewareaframe">' +
			'<div id="popupTitleBar" class="ms-menutoolbar">' +
				'<div id="popupTitle" class="ms-listheaderlabel"></div>' +
				'<div id="popupControls">' +
					'<a onclick="hidePopWin(false);"><span>Close</span></a>' +
				'</div>' +
			'</div>' +
			'<iframe src="' + gLoading + '" style="width:100%;height:100%;background-color:transparent; border:0px none white;" scrolling="auto" frameborder="0" allowtransparency="true" id="popupFrame" name="popupFrame" width="100%" height="100%"></iframe>' +
		'</div>';
    body.appendChild(popmask);
    body.appendChild(popcont);

    gPopupMask = document.getElementById("popupMask");
    gPopupContainer = document.getElementById("popupContainer");
    gPopFrame = document.getElementById("popupFrame");

    // check to see if this is IE version 6 or lower. hide select boxes if so
    // maybe they'll fix this in version 7?
    var brsVersion = parseInt(window.navigator.appVersion.charAt(0), 10);
    if (brsVersion <= 6 && window.navigator.userAgent.indexOf("MSIE") > -1) {
        gHideSelects = true;
    }

    // Add onclick handlers to 'a' elements of class submodal or submodal-width-height
    var elms = document.getElementsByTagName('a');
    for (i = 0; i < elms.length; i++) {
        if (elms[i].className.indexOf("submodal") >= 0) {
            elms[i].onclick = function() {
                // default width and height
                var width = 400;
                var height = 300;
                
                // Parse out optional width and height from className
                var startIndex = this.className.indexOf("submodal");
                var endIndex = this.className.indexOf(" ", startIndex);
                if (endIndex < 0) {
                    endIndex = this.className.length;
                }

                // Parse out optional width and height from className
                if (bambooPlayerSize) {
                    this.className = "submodal-" + bambooPlayerSize;
                }

                var clazz = this.className.substring(startIndex, endIndex);
                params = clazz.split('-');
                if (params.length == 3) {
                    width = parseInt(params[1]);
                    height = parseInt(params[2]);
                }
                showPopWin(this.href, width, height, null); return false;
            }
        }
    }
}
addEvent(window, "load", initPopUp);

/**
* @argument width - int in pixels
* @argument height - int in pixels
* @argument url - url to display
* @argument returnFunc - function to call when returning true from the window.
*/

function showPopWin(url, width, height, returnFunc) {
    gPopupIsShown = true;
    disableTabIndexes();
    gPopupMask.style.display = "block";
    gPopupContainer.style.display = "block";
    centerPopWin(width, height);
    var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
    gPopupContainer.style.width = width + "px";
    gPopupContainer.style.height = (height + titleBarHeight) + "px";
    gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
    gPopFrame.style.height = (height) + "px";
    gPopFrame.src = url;
    gReturnFunc = returnFunc;
    // for IE
    if (gHideSelects == true) {
        hideSelectBoxes();
    }
    window.setTimeout("setPopTitleAndRewriteTargets();", 100);
}

//
var gi = 0;
function centerPopWin(width, height) {
    if (gPopupIsShown == true) {
        if (width == null || isNaN(width)) {
            width = gPopupContainer.offsetWidth;
        }
        if (height == null) {
            height = gPopupContainer.offsetHeight;
        }
        var fullHeight = getViewportHeight();
        var fullWidth = getViewportWidth();
        // scLeft and scTop changes by Thomas Risberg
        var scLeft, scTop;
        if (self.pageYOffset) {
            scLeft = self.pageXOffset;
            scTop = self.pageYOffset;
        } else if (document.documentElement && document.documentElement.scrollTop) {
            scLeft = document.documentElement.scrollLeft;
            scTop = document.documentElement.scrollTop;
        } else if (document.body) {
            scLeft = document.body.scrollLeft;
            scTop = document.body.scrollTop;
        }
        gPopupMask.style.height = fullHeight + "px";
        gPopupMask.style.width = fullWidth + "px";
        gPopupMask.style.top = scTop + "px";
        gPopupMask.style.left = scLeft + "px";
        //window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;
        var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
        var topMargin = scTop + ((fullHeight - (height + titleBarHeight)) / 2);
        if (topMargin < 0) { topMargin = 0; }
        gPopupContainer.style.top = topMargin + "px";
        gPopupContainer.style.left = (scLeft + ((fullWidth - width) / 2)) + "px";
    }
}
addEvent(window, "resize", centerPopWin);
//addEvent(window, "scroll", centerPopWin);
window.onscroll = centerPopWin;

/**
* @argument callReturnFunc - bool - determines if we call the return function specified
* @argument returnVal - anything - return value 
*/
function hidePopWin(callReturnFunc) {
    gPopupIsShown = false;
    restoreTabIndexes();
    if (gPopupMask == null) {
        return;
    }
    gPopupMask.style.display = "none";
    gPopupContainer.style.display = "none";
    if (callReturnFunc == true && gReturnFunc != null) {
        gReturnFunc(window.frames["popupFrame"].returnVal);
    }
    gPopFrame.src = gLoading;
    // display all select boxes
    if (gHideSelects == true) {
        displaySelectBoxes();
    }
}

/**
* Sets the popup title based on the title of the html document it contains.
* Also adds a base attribute so links and forms will jump out out of the iframe
* unless a base or target is already explicitly set.
* Uses a timeout to keep checking until the title is valid.
*/
function setPopTitleAndRewriteTargets() {
    
    if (window.frames["popupFrame"].document.title == null) {
        window.setTimeout("setPopTitleAndRewriteTargets();", 30);
    } else {
        var popupDocument = window.frames["popupFrame"].document;
        document.getElementById("popupTitle").innerHTML = popupDocument.title;
        if (popupDocument.getElementsByTagName('base').length < 1) {
            var aList = window.frames["popupFrame"].document.getElementsByTagName('a');
            for (var i = 0; i < aList.length; i++) {
                if (aList.target == null) aList[i].target = '_parent';
            }
            var fList = window.frames["popupFrame"].document.getElementsByTagName('form');
            for (i = 0; i < fList.length; i++) {
                if (fList.target == null) fList[i].target = '_parent';
            }
        }
    }
}

// Tab key trap. iff popup is shown and key was [TAB], suppress it.
// @argument e - event - keyboard event that caused this function to be called.
function keyDownHandler(e) {
    if (gPopupIsShown && e.keyCode == 9) return false;
}

// For IE.  Go through predefined tags and disable tabbing into them.
function disableTabIndexes() {
    if (document.all) {
        var i = 0;
        for (var j = 0; j < gTabbableTags.length; j++) {
            var tagElements = document.getElementsByTagName(gTabbableTags[j]);
            for (var k = 0; k < tagElements.length; k++) {
                gTabIndexes[i] = tagElements[k].tabIndex;
                tagElements[k].tabIndex = "-1";
                i++;
            }
        }
    }
}

// For IE. Restore tab-indexes.
function restoreTabIndexes() {
    if (document.all) {
        var i = 0;
        for (var j = 0; j < gTabbableTags.length; j++) {
            var tagElements = document.getElementsByTagName(gTabbableTags[j]);
            for (var k = 0; k < tagElements.length; k++) {
                tagElements[k].tabIndex = gTabIndexes[i];
                tagElements[k].tabEnabled = true;
                i++;
            }
        }
    }
}

/**
* Hides all drop down form select boxes on the screen so they do not appear above the mask layer.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
* Thanks for the code Scott!
*/
function hideSelectBoxes() {
    for (var i = 0; i < document.forms.length; i++) {
        for (var e = 0; e < document.forms[i].length; e++) {
            if (document.forms[i].elements[e].tagName == "SELECT") {
                document.forms[i].elements[e].style.visibility = "hidden";
            }
        }
    }
}

/**
* Makes all drop down form select boxes on the screen visible so they do not reappear after the dialog is closed.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
*/
function displaySelectBoxes() {
    for (var i = 0; i < document.forms.length; i++) {
        for (var e = 0; e < document.forms[i].length; e++) {
            if (document.forms[i].elements[e].tagName == "SELECT") {
                document.forms[i].elements[e].style.visibility = "visible";
            }
        }
    }
}

/**
* X-browser event handler attachment and detachment
* @argument obj - the object to attach event to
* @argument evType - name of the event - DONT ADD "on", pass only "mouseover", etc
* @argument fn - function to call
*/
function addEvent(obj, evType, fn) {
    if (obj.addEventListener) {
        obj.addEventListener(evType, fn, false);
        return true;
    } else if (obj.attachEvent) {
        var r = obj.attachEvent("on" + evType, fn);
        return r;
    } else {
        return false;
    }
}


function getViewportHeight() {
    if (window.innerHeight != window.undefined) return window.innerHeight;
    if (document.compatMode == 'CSS1Compat') return document.documentElement.clientHeight;
    if (document.body) return document.body.clientHeight;
    return window.undefined;
}

function getViewportWidth() {
    if (window.innerWidth != window.undefined) return window.innerWidth;
    if (document.compatMode == 'CSS1Compat') return document.documentElement.clientWidth;
    if (document.body) return document.body.clientWidth;
    return window.undefined;
}

function VlibPlayMask(id, isShow) {
    document.getElementById(id).style.visibility = isShow ? "visible" : "hidden";
}