}
@Override
protected String getModulePrefix(TreeLogger logger, LinkerContext context, String strongName)
throws UnableToCompleteException {
TextOutput out = new DefaultTextOutput(context.isOutputCompact());
// $wnd is the main window that the GWT code will affect and also the
// location where the bootstrap function was defined. In iframe-based linkers,
// $wnd is set to window.parent. Usually, in others, $wnd = window.
// By default, $wnd is not set when the module starts, but a replacement for
// installLocationIframe.js may set it.
out.print("var $wnd = $wnd || window.parent;");
out.newlineOpt();
out.print("var __gwtModuleFunction = $wnd." + context.getModuleFunctionName() + ";");
out.newlineOpt();
out.print("var $sendStats = __gwtModuleFunction.__sendStats;");
out.newlineOpt();
out.print("$sendStats('moduleStartup', 'moduleEvalStart');");
out.newlineOpt();
out.print("var $gwt_version = \"" + About.getGwtVersionNum() + "\";");
out.newlineOpt();
out.print("var $strongName = '" + strongName + "';");
out.newlineOpt();
out.print("var $doc = $wnd.document;");
// The functions for runAsync are set up in the bootstrap script so they
// can be overriden in the same way as other bootstrap code is, however
// they will be called from, and expected to run in the scope of the GWT code
// (usually an iframe) so, here we set up those pointers.
out.print("function __gwtStartLoadingFragment(frag) {");
out.newlineOpt();
String fragDir = getFragmentSubdir(logger, context) + '/';
out.print("var fragFile = '" + fragDir + "' + $strongName + '/' + frag + '" + FRAGMENT_EXTENSION + "';");
out.newlineOpt();
out.print("return __gwtModuleFunction.__startLoadingFragment(fragFile);");
out.newlineOpt();
out.print("}");
out.newlineOpt();
out.print("function __gwtInstallCode(code) {return __gwtModuleFunction.__installRunAsyncCode(code);}");
out.newlineOpt();
// Even though we call the $sendStats function in the code written in this
// linker, some of the compilation code still needs the $stats and
// $sessionId
// variables to be available.
out.print("var $stats = $wnd.__gwtStatsEvent ? function(a) {return $wnd.__gwtStatsEvent(a);} : null;");
out.newlineOpt();
out.print("var $sessionId = $wnd.__gwtStatsSessionId ? $wnd.__gwtStatsSessionId : null;");
out.newlineOpt();
return out.toString();
}