/**
 * Copyright 2008-2016 Qualogy Solutions B.V.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.qualogy.qafe.gwt.client.component;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.AbsolutePanel;
import com.google.gwt.user.client.ui.UIObject;
import com.google.gwt.user.client.ui.Widget;
import com.qualogy.qafe.gwt.client.context.ClientApplicationContext;
import com.qualogy.qafe.gwt.client.ui.renderer.AbstractComponentRenderer.MessageBox;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeEventHandler;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeEventHandlerManager;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeKeyDownEvent;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeKeyDownHandler;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeKeyHandler;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeKeyUpEvent;
import com.qualogy.qafe.gwt.client.ui.renderer.events.NativeKeyUpHandler;

public class QRootPanel extends AbsolutePanel implements HasNativeKeyHandlers, NativeEventHandler {

    private Widget menuAndToolBar = null;

    private Widget rootPanel = null;

    private Widget messageBox = null;

    private UIObject menuBar = null;

    private UIObject toolbar = null;

    private Map<Integer, List<NativeKeyHandler>> eventType2Handlers =
        new HashMap<Integer, List<NativeKeyHandler>>();

    public int getMenuAndToolBarMargin() {
        if (menuAndToolBar != null) {
            String value = DOM.getElementAttribute(menuAndToolBar.getElement(), "totalMargin");
            if (value != null && value.length() > 0) {
                try {
                    return Integer.parseInt(value);
                } catch (NumberFormatException e) {
                    ClientApplicationContext.getInstance().log("Exception in QRootPanel: " + e.getMessage());
                    return 0;
                }
            }
        }
        return 0;
    }

    public Widget getMenuAndToolBar() {
        return menuAndToolBar;
    }

    public void setMenuAndToolBar(Widget menuAndToolBar) {
        this.menuAndToolBar = menuAndToolBar;
    }

    public Widget getRootPanel() {
        return rootPanel;
    }

    public void setRootPanel(Widget rootPanel) {
        this.rootPanel = rootPanel;
    }

    public Widget getMessageBox() {
        return messageBox;
    }

    public void setMessageBox(Widget messageBox) {
        this.messageBox = messageBox;
    }

    public UIObject getMenuBar() {
        return menuBar;
    }

    public void setMenuBar(UIObject menuBar) {
        this.menuBar = menuBar;
    }

    public UIObject getToolbar() {
        return toolbar;
    }

    public void setToolbar(UIObject toolbar) {
        this.toolbar = toolbar;
    }

    public void onNativeEvent(NativeEvent event, int eventType) {
        List<NativeKeyHandler> nativeKeyHandlers = eventType2Handlers.get(eventType);
        if (nativeKeyHandlers != null) {
            for (NativeKeyHandler handler : nativeKeyHandlers) {
                if (handler instanceof NativeKeyDownHandler) {
                    NativeKeyDownHandler keyDownHandler = (NativeKeyDownHandler) handler;
                    NativeKeyDownEvent keyDownEvent = new NativeKeyDownEvent(this, event);
                    keyDownHandler.onNativeKeyDown(keyDownEvent);
                } else if (handler instanceof NativeKeyUpHandler) {
                    NativeKeyUpHandler keyUpHandler = (NativeKeyUpHandler) handler;
                    NativeKeyUpEvent keyUpEvent = new NativeKeyUpEvent(this, event);
                    keyUpHandler.onNativeKeyUp(keyUpEvent);
                }
            }
        }
    }

    public void addNativeKeyDownHandler(NativeKeyDownHandler handler) {
        int eventType = Event.ONKEYDOWN;
        NativeEventHandlerManager.addNativeEventHandler(this, this, eventType);
        addNativeKeyHandler(handler, eventType);
    }

    public void addNativeKeyUpHandler(NativeKeyUpHandler handler) {
        int eventType = Event.ONKEYUP;
        NativeEventHandlerManager.addNativeEventHandler(this, this, eventType);
        addNativeKeyHandler(handler, eventType);
    }

    private void addNativeKeyHandler(NativeKeyHandler handler, int eventType) {
        List<NativeKeyHandler> nativeKeyHandlers = eventType2Handlers.get(eventType);
        if (nativeKeyHandlers == null) {
            nativeKeyHandlers = new ArrayList<NativeKeyHandler>();
            eventType2Handlers.put(eventType, nativeKeyHandlers);
        }
        nativeKeyHandlers.add(handler);
    }

    public void showMessage(String message, Integer delay, String styleClass, String[][] styleProperties) {
        showMessage(message, delay, styleClass, styleProperties, Window.getClientWidth());
    }

    public void showMessage(String message, Integer delay, String styleClass, String[][] styleProperties,
            int contentWidth) {
        Widget wmb = this.getMessageBox();

        // the 100 is from the CSS width/2

        setWidgetPosition(wmb, (contentWidth / 2) - 100, getMenuAndToolBarMargin());

        if (wmb instanceof MessageBox) {
            MessageBox mb = (MessageBox) wmb;
            Utils.fadeMessage(mb, message, delay, styleClass, styleProperties);
        }

    }

}