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POProgrammatically open new browser tab with Silverlight and set content
 

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  1. POProgrammatically open new browser tab with Silverlight and set content
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    <p>Was wondering if there is any way in Silverlight to open a new browser tab and set its content. In short, my app receives files (binary data) and needed to have the user's browser presenting them. </p> <p>My app downloads contents (images/pdfs/whatever) from repositories from the cloud and stores them as binary data in a local cache; then after that I need a way to display those now local contents to the end user in a new tab. The "new tab" requirement is due to silverlight not supporting rendering of many file types such as .gif, .pdf and others - things that browsers handle easily, either natively or with widely used plugins. So my current WTF-y solution uses System.Windows.Browser and consists in the following:</p> <pre><code> // Get document and body var doc = HtmlPage.Document; var body = doc.Body; // Create a &lt;form&gt; element and add it to the body var newForm = doc.CreateElement("form"); newForm.SetAttribute("action", "www.example.com/contentpresenter.php"); newForm.SetAttribute("enctype", "multipart/form-data"); newForm.SetAttribute("method", "POST"); newForm.SetAttribute("target", "_blank"); body.AppendChild(newForm); var inp = doc.CreateElement("input"); inp.SetAttribute("type", "text"); inp.SetAttribute("name", "mcontent"); inp.SetAttribute("value", Tools.ToBase64( content.Content as Stream )); newForm.AppendChild(inp); var inpt = doc.CreateElement("input"); inpt.SetAttribute("type", "text"); inpt.SetAttribute("name", "tcontent"); inpt.SetAttribute("value", content.ContentType); newForm.AppendChild(inpt); // Send away! newForm.Invoke("submit"); </code></pre> <p>In short, it creates a javascript script that posts the content to a remote PHP script which in turn does nothing more than decoding and presenting the content, which will open in a new tab. Yes, I'm fully aware of how idiotic it sounds - but does the trick and works as intended. </p> <p>As far as I know, creating a new HtmlWindow and building up/altering its contents is not an option due to security constraints. An obvious option is having Silverlight produce javascript which would in turn create a new tab that loads the provided content, but javascript is not too big in handling binary or base64 data - at least not cross-browser seamlessly - and the whole thing seems stupid anyways. </p> <p>Is there a solution to achieve this solely through Silverlight, or at least with a minimum amount of javascript involved? Alternatively, is there any javascript library you would recommend to handle base64 data?</p> <p>Best regards!</p>
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