// Define an anonymous function;
// serves as our main loop,
// limits the scope of variables
(function( sSearchPath, sFileName ){
 
	/*********************************************************************/
	// String : A function for retrieving a translation if one exists
	function text( sText )
	{
		// If the version of the application supports qsTr()
		if( typeof( qsTr ) != "undefined" ){
			// Return the translated (if any) text
			return qsTr( sText );
		}
 
		// Return the original text
		return sText;
	};
 
	/*********************************************************************/
	// void : A function for updating the dialog caption;
	// 'this' is assumed to be a DzBasicDialog
	function updateDialogCaption( sCaption )
	{
		// Find a child widget by name
		var wBrowser = this.findChildOfWidget( "ContentsTBrwsr" );
		// If a widget was found and its the type we want
		if( wBrowser && wBrowser.inherits( "QTextBrowser" ) ){
			// Get the title of the document
			var sTitle = wBrowser.documentTitle;
			// If the title is not empty
			if( !sTitle.isEmpty() ){
				// Update the caption for the dialog
				this.caption = sTitle;
				// We're done...
				return;
			}
		}
 
		// Update the caption for the dialog
		this.caption = sCaption;
	};
 
	/*********************************************************************/
	// void : A function for updating the enabled state of a button;
	// 'this' is assumed to be a DzPushButton
	function updateButtonState( bYesNo )
	{
		// Update the enabled state of the button
		this.enabled = bYesNo;
	};
 
	/*********************************************************************/
	// void : A function for moving forward in a text browser's history;
	// 'this' is assumed to be a DzTextBrowser
	function nextClicked()
	{
		// Move forward in the history
		this.forward();
	};
 
	/*********************************************************************/
	// void : A function for moving backward in a text browser's history;
	// 'this' is assumed to be a DzTextBrowser
	function backClicked()
	{
		// Move backward in the history
		this.backward();
	};
 
	/*********************************************************************/
	// If the application version is earlier than 4.9.3.93
	if( App.version64 < 0x000400090003005d ){
		// Provide feedback
		MessageBox.information(
			text("This script requires %1 4.9.3.93 or newer to continue.")
				.arg( App.appName ), text("Version Error"), text("&Ok") );
		// We're done..
		return;
	}
 
	// Get the current style
	var oStyle = App.getStyle();
 
	// Get the height for buttons
	var nBtnHeight = oStyle.pixelMetric( "DZ_ButtonHeight" );
 
	// Define the template for What's This text
	var sWhatsThis = "<b>%1</b><br/><br/>%2";
 
	// Create a basic dialog
	var wDlg = new DzBasicDialog();
 
	// Get the wrapped widget for the dialog
	var oDlgWgt = wDlg.getWidget();
 
	// Set the title of the dialog
	wDlg.caption = "My Text Browser";
 
	// Strip the space for a settings key
	var sKey = wDlg.caption.replace( / /g, "" ) + "Dlg";
 
	// Set an [unique] object name on the wrapped dialog widget;
	// this is used for recording position and size separately
	// from all other [uniquely named] DzBasicDialog instances
	oDlgWgt.objectName = sKey;
 
 
	// Create a text browser
	var wBrowser = new DzTextBrowser( wDlg );
	wBrowser.getWidget().objectName = "ContentsTBrwsr";
	wBrowser.openExternalLinks = true;
	wBrowser.whatsThis = sWhatsThis.arg( text("Page Contents") )
		.arg( text("Displays the contents of a text file or HTML page.") );
	wBrowser.sourceChanged.connect( wDlg, updateDialogCaption );
 
	// Add the browser to the dialog
	wDlg.addWidget( wBrowser );
 
 
	// Create a forward button
	var wNextBtn = new DzPushButton( wDlg );
	wNextBtn.getWidget().objectName = "NextBtn";
	wNextBtn.text = ">>";
	wNextBtn.enabled = false;
	wNextBtn.setFixedWidth( nBtnHeight * 2 );
	wNextBtn.toolTip = text("Click here to go forward in the browser history.");
	wNextBtn.whatsThis = sWhatsThis.arg( text("Go Forward") ).arg( wNextBtn.toolTip );
	wBrowser.forwardAvailable.connect( wNextBtn, updateButtonState );
	wNextBtn.clicked.connect( wBrowser, nextClicked );
 
	// Add the button to the dialog
	wDlg.addButton( wNextBtn );
 
 
	// Create a back button
	var wBackBtn = new DzPushButton( wDlg );
	wBackBtn.getWidget().objectName = "BackBtn";
	wBackBtn.text = "<<";
	wBackBtn.enabled = false;
	wBackBtn.setFixedWidth( nBtnHeight * 2 );
	wBackBtn.toolTip = text("Click here to go back in the browser history.");
	wBackBtn.whatsThis = sWhatsThis.arg( text("Go Back") ).arg( wBackBtn.toolTip );
	wBrowser.backwardAvailable.connect( wBackBtn, updateButtonState );
	wBackBtn.clicked.connect( wBrowser, backClicked );
 
	// Add the button to the dialog
	wDlg.addButton( wBackBtn );
 
 
	// Set the browser source
	wBrowser.searchPaths = [ sSearchPath ];
	wBrowser.source = sFileName;
 
 
	// Set the text on the accept button
	wDlg.setAcceptButtonText( text("&Close") );
	// Hide the cancel button
	wDlg.showCancelButton( false );
 
	// Display the dialog
	wDlg.exec();
 
// Finalize the function and invoke
})( String("%1/DAZ Studio").arg( App.getDocumentationPath() ), "what_is_studio.htm" );