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mapway's ui-frame
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package com.ksyzt.gwt.client.site;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DockLayoutPanel;
import com.google.gwt.user.client.ui.Widget;
import com.ksyzt.gwt.client.common.CssStyle;
import com.ksyzt.gwt.client.common.MessageComposite;
import com.ksyzt.gwt.client.common.SysResource;
import com.ksyzt.gwt.client.common.TopMessage;
import com.ksyzt.gwt.client.event.MessageEvent;
import com.ksyzt.gwt.client.event.MessageHandler;
import com.ksyzt.gwt.client.site.urlrewrite.UrlRewriteConfigure;

// TODO: Auto-generated Javadoc

/**
 * The Class SiteFrame.
 */
public class SiteFrame extends MessageComposite {

    /**
     * The style.
     */
    @UiField(provided = true)
    CssStyle style;

    /**
     * The ui binder.
     */
    private static SiteFrameUiBinder uiBinder = GWT
            .create(SiteFrameUiBinder.class);

    /**
     * The Interface SiteFrameUiBinder.
     */
    interface SiteFrameUiBinder extends UiBinder {
    }

    /**
     * Instantiates a new site frame.
     */
    public SiteFrame() {
        style = SysResource.INSTANCE.getCss();
        initWidget(uiBinder.createAndBindUi(this));
    }

    /**
     * On qiut.
     *
     * @param e the e
     */
    @UiHandler("btnQiut")
    void onQiut(ClickEvent e) {
        MessageEvent ev = new MessageEvent(MessageEvent.QUIT, 0);
        fireEvent(ev);
    }

    /**
     * The root.
     */
    @UiField
    DockLayoutPanel root;

    /**
     * The page info.
     */
    PageSiteInfo pageInfo;

    /**
     * The page url.
     */
    UrlRewriteConfigure pageUrl;

    /**
     * The m message handler.
     */
    private MessageHandler m_message_handler = new MessageHandler() {

        @Override
        public void onMessage(Object sender, Integer message, Object value) {
            if (message == MessageEvent.MESSAGE) {
                message((String) value);
            }

        }
    };

    /**
     * The current.
     */
    Widget current = null;

    /**
     * On info.
     *
     * @param e the e
     */
    @UiHandler("btnSiteInfo")
    void onInfo(ClickEvent e) {
        if (pageInfo == null) {
            pageInfo = new PageSiteInfo();
            pageInfo.addMessageHandler(m_message_handler);
        }
        pageInfo.refresh();
        setCurrentWidget(pageInfo);

    }

    /**
     * Sets the current widget.
     *
     * @param pageInfo2 the new current widget
     */
    private void setCurrentWidget(Widget pageInfo2) {
        if (current != null) {
            root.remove(current);

        }
        root.add(pageInfo2);
        current = pageInfo2;
    }

    /* (non-Javadoc)
     * @see com.ksyzt.gwt.client.common.MessageComposite#message(java.lang.String)
     */
    public void message(String value) {
        TopMessage msg = new TopMessage();
        msg.showMesasge(value);

    }

    /**
     * On URL.
     *
     * @param e the e
     */
    @UiHandler("btnURL")
    void onURL(ClickEvent e) {
        if (pageUrl == null) {
            pageUrl = new UrlRewriteConfigure();
            pageUrl.init();
            pageUrl.addMessageHandler(m_message_handler);
        }

        setCurrentWidget(pageUrl);
    }
}