chamilo-lms2/main/inc/lib/fckeditor/editor/plugins/media/media.js

// Reworks and improvements by Ivan Tcholakov, JUL-2009.

var dialog = window.parent;
var oEditor = dialog.InnerDialogLoaded();
var FCK = oEditor.FCK;
var FCKLang = oEditor.FCKLang;
var FCKConfig = oEditor.FCKConfig;
var FCKTools = oEditor.FCKTools;

// Security RegExp
var REG_SCRIPT = new RegExp("< *script.*>|< *style.*>|< *link.*>|< *body.*>", "i");
var REG_PROTOCOL = new RegExp("javascript:|vbscript:|about:", "i");
var REG_CALL_SCRIPT = new RegExp("&\{.*\};", "i");
var REG_EVENT = new RegExp("onError|onUnload|onBlur|onFocus|onClick|onMouseOver|onMouseOut|onSubmit|onReset|onChange|onSelect|onAbort", "i");
// Cookie Basic
var REG_AUTH = new RegExp("document\.cookie|Microsoft\.XMLHTTP", "i");
// TEXTAREA
var REG_NEWLINE = new RegExp("\x0d|\x0a", "i");

var MediaSite = 'http://www.Media.com/v/';
var HighQualityString = '%26hl=en%26fs=1%26rel=0%26ap=%2526fmt=18';
var LowQualityString = '%26hl=en%26fs=1%26rel=0';

// Set the language direction.
window.document.dir = FCKLang.Dir;

FCKLang['DlgMediaURLTipContent1'] = FCKLang['DlgMediaURLTipContent1'] ? FCKLang['DlgMediaURLTipContent1'] : '';
FCKLang['DlgMediaURLTipContent3'] = FCKLang['DlgMediaURLTipContent3'] ? FCKLang['DlgMediaURLTipContent3'] : '';
FCKLang['DlgMediaURLTipContent1'] = FCKLang['DlgMediaURLTipContent1'].toString().replace('%s', '<a href="http://www.Media.com/" target="_blank">http://www.Media.com/<\/a>');
FCKLang['DlgMediaURLTipContent3'] = FCKLang['DlgMediaURLTipContent3'].toString().replace('%s', 'http://www.Media.com/watch?v=XXXXXXXXXXX...');

//#### Dialog Tabs

// Set the dialog tabs.
dialog.AddTab('Info', FCKLang.DlgInfoTab);
dialog.AddTab('Preview', FCKLang.DlgImgPreview);



var media = {
    type: "macintosh",
    color: "red",
    
    is_valid_url: function (url) {
        
        if (url.search(REG_SCRIPT) != -1) 
        {
            return false;
        }
    
        if (url.search(REG_PROTOCOL) != -1) 
        {
            return false;
        }
    
        if (url.search(REG_CALL_SCRIPT) != -1) 
        {
            return false;
        }
    
        if (url.search(REG_EVENT) != -1) 
        {
            return false;
        }
    
        if (url.search(REG_AUTH) != -1) 
        {
            return false;
        }
    
        if (url.search(REG_NEWLINE) != -1) 
        {
            return false;
        }
    
        return true;
    },
    
    is_valid_size: function (code) {
        if (isNaN(code)){
            return false;
        }
        
        var value = parseInt(code, 10);
        if (value <= 0){
            return false;
        }
        return true;
    
    },
    
    to_size: function (code){
        
        if (isNaN(code)){
            return false;
        }
        
        var result = parseInt(code, 10);
    
        if (result <= 0){
            result = 0;
        }
        return result;
    }
};

var preview = {
    
    clear: function () 
    {
        if (!ePreview){
            return;
        }
    
        while (ePreview.firstChild){
            ePreview.removeChild(ePreview.firstChild);
        }
    
        ePreview.innerHTML = '&nbsp;';
    },
    
    
    update: function () 
    {
        if (!ePreview){
            return;
        }
    
        while (ePreview.firstChild){
            ePreview.removeChild(ePreview.firstChild);
        }
    
        var oDoc = ePreview.ownerDocument || ePreview.document;
        var e = oDoc.createElement('EMBED');
        UpdateEmbed(e);
    
        if (!IsValidMedia(e)) 
        {
            this.clear();
            return;
        } 
        
        var max_width = 515;
        var max_height = 275;
        var width = GetAttribute(e, 'width', 425);
        var height = GetAttribute(e, 'height', 344);
        var new_size = FCK.ResizeToFit(width, height, max_width, max_height);
        width = new_size[0];
        height = new_size[1];
        SetAttribute(e, 'width', width);
        SetAttribute(e, 'height', height);
        
        ePreview.appendChild(e);
        
        var margin_left = parseInt((max_width - width) / 2, 10);
        var margin_top = parseInt((max_height - height) / 2, 10);
        
        if (ePreview.currentStyle) 
        {
            // IE
            ePreview.style.marginLeft = margin_left;
            ePreview.style.marginTop = margin_top;
        } 
        else 
        {
            // Other browsers
            SetAttribute(ePreview, 'style', 'margin-left: ' + margin_left + 'px; margin-top: ' + margin_top + 'px;');
        }
        
    }
};



// This function is called when a dialog tab has been selected.
function OnDialogTabChange(tabCode) 
{
    ShowE('divInfo', (tabCode == 'Info'));
    ShowE('divPreview', (tabCode == 'Preview'));
    
    if (tabCode == 'Preview') 
    {
        preview.update();
    } 
    else 
    {
        preview.clear();
    }
}

// Get the selected video (if available).
var oFakeImage = FCK.Selection.GetSelectedElement();
var oEmbed;

if (oFakeImage) 
{
    if (oFakeImage.tagName == 'IMG' && oFakeImage.getAttribute('_fckvideo'))
        oEmbed = FCK.GetRealElement(oFakeImage);
    else
        oFakeImage = null;
}

window.onload = function() 
{
    // Translate the dialog box texts.
    oEditor.FCKLanguageManager.TranslatePage(document);

    // Load the selected element information (if any).
    LoadSelection();
    
    dialog.SetAutoSize(true);

    // Activate the "OK" button.
    dialog.SetOkButton(true);
    
    SelectField('txtUrl');
}

function LoadSelection() 
{
    if (!oEmbed){
        return;
    }
        
    GetE('txtWidth').value = GetAttribute(oEmbed, 'width', 425);
    GetE('txtHeight').value = GetAttribute(oEmbed, 'height', 344);
}

//#### The OK button was hit.
function Ok() 
{
    GetE('txtUrl').value = GetE('txtUrl').value.Trim();
    
    if (GetE('txtUrl').value.length == 0) 
    {
        dialog.SetSelectedTab('Info');
        GetE('txtUrl').focus();
        alert(oEditor.FCKLang.DlgMediaCode);
        return false;
    }

    // Check security
    var url = GetE('txtUrl').value;
    if (!media.is_valid_url(url)) 
    {
        alert(oEditor.FCKLang.DlgMediaSecurity);
        return false;
    }
    
    oEditor.FCKUndo.SaveUndoStep();
    if (!oEmbed) 
    {
        oEmbed = FCK.EditorDocument.createElement('EMBED');
        oFakeImage = null;
    }
    UpdateEmbed(oEmbed);
    
    if (!oFakeImage) 
    {
        oFakeImage = oEditor.FCKDocumentProcessor_CreateFakeImage('FCK__Video', oEmbed);
        oFakeImage.setAttribute('_fckvideo', 'true', 0);
        oFakeImage = FCK.InsertElement(oFakeImage);
    }
    
    oEditor.FCKEmbedAndObjectProcessor.RefreshView(oFakeImage, oEmbed);
    
    return true;
}

function UpdateEmbed(e) 
{
    var MediaUrl = GetE('txtUrl').value;
    var MediaId = GetMediaId(MediaUrl);
    
    SetAttribute(e, 'type', 'application/x-shockwave-flash');
    SetAttribute(e, 'pluginspage', 'http://www.macromedia.com/go/getflashplayer');
    SetAttribute(e, 'allowfullscreen', 'true');
    SetAttribute(e, 'wmode', 'transparent');
    if (GetE('radioHigh').checked) 
    {
        SetAttribute(e, 'src', MediaSite + MediaId + HighQualityString);
    } 
    else 
    {
        SetAttribute(e, 'src', MediaSite + MediaId + LowQualityString);
    }
    
    SetAttribute(e, 'width', GetE('txtWidth').value == '' ? 425 : GetE('txtWidth').value);
    SetAttribute(e, 'height', GetE('txtHeight').value == '' ? 344 : GetE('txtHeight').value);
}

function checkCode(code) 
{
    if (code.search(REG_SCRIPT) != -1) 
    {
        return false;
    }
    
    if (code.search(REG_PROTOCOL) != -1) 
    {
        return false;
    }
    
    if (code.search(REG_CALL_SCRIPT) != -1) 
    {
        return false;
    }
    
    if (code.search(REG_EVENT) != -1) 
    {
        return false;
    }
    
    if (code.search(REG_AUTH) != -1) 
    {
        return false;
    }
    
    if (code.search(REG_NEWLINE) != -1) 
    {
        return false;
    }
    
    return true;
}

function GetMediaId(url) 
{
    var MediaId = url.toString().slice(url.search(/\?v=/i) + 3);
    var end = MediaId.indexOf('%');
    
    if (end > 0) 
    {
        MediaId = MediaId.substring(0, end);
    }
    
    return MediaId;
}

function GetQuality(url) 
{
    var quality = 'low';
    
    var QualityString = url.toString().substr(url.search('%'));
    
    if (QualityString.length > LowQualityString.length) 
    {
        quality = 'high';
    }
    
    return quality;
}

var ePreview;

function IsValidMedia(e) 
{
    if (!e){
        return false;
    }
    
    var src = GetAttribute(e, 'src', '');
    var width = GetAttribute(e, 'width', '');
    var height = GetAttribute(e, 'height', '');
    
    if (src.length == 0){
        return false;
    }
    
    if (isNaN(width)){
        return false;
    }
    
    if (parseInt(width, 10) <= 0){
        return false;
    }
    
    if (isNaN(height)){
        return false;
    }
    
    if (parseInt(height, 10) <= 0){
        return false;
    }
    
    return true;
}

function SetPreviewElement(previewEl) 
{
    ePreview = previewEl;
    
    if (IsValidMedia(oEmbed)){
        UpdatePreview();
    }
}

function UpdatePreview() 
{
    if (!ePreview){
        return;
    }
    
    while (ePreview.firstChild)
        ePreview.removeChild(ePreview.firstChild);
    
    var oDoc = ePreview.ownerDocument || ePreview.document;
    var e = oDoc.createElement('EMBED');
    UpdateEmbed(e);
    
    if (!IsValidMedia(e)) 
    {
        ClearPreview();
    } 
    else 
    {
        var max_width = 515;
        var max_height = 275;
        var width = GetAttribute(e, 'width', 425);
        var height = GetAttribute(e, 'height', 344);
        var new_size = FCK.ResizeToFit(width, height, max_width, max_height);
        width = new_size[0];
        height = new_size[1];
        SetAttribute(e, 'width', width);
        SetAttribute(e, 'height', height);
        
        ePreview.appendChild(e);
        
        var margin_left = parseInt((max_width - width) / 2, 10);
        var margin_top = parseInt((max_height - height) / 2, 10);
        
        if (ePreview.currentStyle) 
        {
            // IE
            ePreview.style.marginLeft = margin_left;
            ePreview.style.marginTop = margin_top;
        } 
        else 
        {
            // Other browsers
            SetAttribute(ePreview, 'style', 'margin-left: ' + margin_left + 'px; margin-top: ' + margin_top + 'px;');
        }
    }
}

function ClearPreview() 
{
    if (!ePreview){
        return;
    }
    
    while (ePreview.firstChild){
        ePreview.removeChild(ePreview.firstChild);
    }
    
    ePreview.innerHTML = '&nbsp;';
}