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package in.shop2020.hotspot.dashbaord.client.inbox;
/**
 * <pre>
 *
 * Description:
 *
 *      Generic printing class
 *      Can be used to print the Window it self, DOM.Elements, UIObjects (Widgets) and plain HTML
 *
 * Usage:
 *
 *      You must insert this iframe in your host page:
 *              <iframe id="__printingFrame" style="width:0;height:0;border:0"></iframe>
 *
 *      Window:
 *              Print.it();
 *
 *      Objects/HTML:
 *              Print.it(RootPanel.get("myId"));
 *              Print.it(DOM.getElementById("myId"));
 *              Print.it("Just <b>Print.it()</b>!");
 *
 *      Objects/HTML using styles:
 *              Print.it("<link rel=StyleSheet type=text/css media=paper href=/paperStyle.css>", RootPanel.get("myId"));
 *              Print.it("<style type=text/css media=paper> .newPage { page-break-after: always; } </style>",
 *                              "Hi<p class=newPage></p>By");
 *
 *      Objects/HTML using styles and DocType:
 *              Print.it("<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN' 'http://www.w3.org/TR/html4/strict.dtd'>",
 *                       "<link rel=StyleSheet type=text/css media=paper href=/paperStyle.css>",
 *                       RootPanel.get("myId"));
 *
 * OBS:
 *
 *      Warning: You can't use \" in your style String
 *
 *      Obs: If your machine is to slow to render the page and you keep getting blank pages, change USE_TIMER to true and
 *           play with TIMER_DELAY
 *
 *      Obs: If you try to print Form elements, like TextArea and ListBox they will show default status 
 *
 * </pre>
 */

import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.UIObject;
import com.google.gwt.user.client.Timer;

public class Print {

    /**
     * If true, use a Timer instead of DeferredCommand to print the internal fram
     */
    public static boolean USE_TIMER     = false;

    /**
     * Time in seconds to wait before printing the internal frame when using Timer
     */
    public static int TIMER_DELAY       = 2;


    public static native void it() /*-{
        $wnd.print();
    }-*/;

    public static void it(UIObject obj) {
        it("", obj);
    }

    public static void it(Element element) {
        it("", element);
    }

    public static void it(String style, UIObject obj) {
        it(style, obj.getElement());
    }

    public static void it(String style, Element element) {
        it("", style, element);
    }

    public static void it(String docType, String style, Element element) {
        it(docType, style, DOM.toString(element));
    }

    public static void it(String docType, String style, String it) {
        it(docType
           +"<html>"
           +"<head>"
           +"<meta http-equiv=\"Content-Type\"          content=\"text/html; charset=utf-8\">"
           +"<meta http-equiv=\"Content-Style-Type\"    content=\"text/css\">"
           +    style
           +"</head>"+"<body>"
           +    it
           +"</body>"+
           "</html>");
    }

    public static void it(String html) {
        try {
            buildFrame(html);

            if (USE_TIMER) {
                Timer timer     = new Timer() {
                        public void run() {
                            printFrame();
                        }
                    };
                timer.schedule(TIMER_DELAY * 1000);
            } else {
                DeferredCommand.addCommand(new Command() {
                        public void execute() {
                            printFrame();
                        }
                    });
            }

        } catch (Throwable exc) {
            Window.alert(exc.getMessage());
        }
    }

    public static native void buildFrame(String html) /*-{
        var frame = $doc.getElementById('__printingFrame');
        if (!frame) {
            $wnd.alert("Error: Can't find printing frame.");
            return;
        }
        var doc = frame.contentWindow.document;
        doc.open();
        doc.write(html);
        doc.close();

    }-*/;

    public static native void printFrame() /*-{
        var frame = $doc.getElementById('__printingFrame');
        frame = frame.contentWindow;
        frame.focus();
        frame.print();
    }-*/;

} // end of class Print