org.semanticsoft.vaaclipse.widgets.client.ui.stackwidget.StackWidgetConnector.java Source code

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Here is the source code for org.semanticsoft.vaaclipse.widgets.client.ui.stackwidget.StackWidgetConnector.java

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/*******************************************************************************
 * Copyright (c) 2012 Rushan R. Gilmullin and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Rushan R. Gilmullin - initial API and implementation
 *******************************************************************************/

package org.semanticsoft.vaaclipse.widgets.client.ui.stackwidget;

import org.semanticsoft.vaaclipse.widgets.StackWidget;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.UIDL;
import com.vaadin.client.VConsole;
import com.vaadin.client.communication.StateChangeEvent;
import com.vaadin.shared.ui.Connect;

import fi.jasoft.dragdroplayouts.client.VDragFilter;
import fi.jasoft.dragdroplayouts.client.ui.interfaces.DDLayoutState;
import fi.jasoft.dragdroplayouts.client.ui.tabsheet.DDTabsheetConnector;

/**
 * @author rushan
 * 
 */
@Connect(StackWidget.class)
public class StackWidgetConnector extends DDTabsheetConnector {
    @Override
    protected Widget createWidget() {
        return GWT.create(VStackWidget.class);
    }

    @Override
    public VStackWidget getWidget() {
        return (VStackWidget) super.getWidget();
    }

    /**
     * Called whenever an update is received from the server
     */
    public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
        VStackWidget stackWidget = getWidget();

        stackWidget.id = uidl.getId();
        stackWidget.client = client;

        if (uidl.getIntAttribute("svoi") == 5) {
            int state = uidl.getIntAttribute("vaadock_tabsheet_state");
            VConsole.log("VStackWidget: set initial state = " + state);
            stackWidget.setState(state);
            stackWidget.maximizeEnabled = uidl.getBooleanAttribute("maximize_enabled");
            stackWidget.minimizeEnabled = uidl.getBooleanAttribute("minimize_enabled");

            if (!stackWidget.maximizeEnabled)
                stackWidget.maximizeButton.setAttribute("style", "display: none;");
            if (!stackWidget.minimizeEnabled)
                stackWidget.minimizeButton.setAttribute("style", "display: none;");
        }

        if (isRealUpdate(uidl) && !uidl.hasAttribute("hidden")) {
            UIDL acceptCrit = uidl.getChildByTagName("-ac");
            if (acceptCrit == null) {
                getWidget().setDropHandler(null);
            } else {
                if (getWidget().getDropHandler() == null) {
                    getWidget().setDropHandler(new VStackWidgetDropHandler(getWidget(), client));
                    VConsole.log("updateFromUIDL: VStackWidgetDropHandler installed");
                }
                getWidget().getDropHandler().updateAcceptRules(acceptCrit);
            }
        }

        super.updateFromUIDL(uidl, client);
    }

    @Override
    public void onStateChanged(StateChangeEvent stateChangeEvent) {
        super.onStateChanged(stateChangeEvent);
        getWidget().setDragFilter(new VSWDragFilter(getState()));
    }

    private class VSWDragFilter extends VDragFilter {

        public VSWDragFilter(DDLayoutState state) {
            super(state);
        }

        @Override
        public boolean isDraggable(Widget widget) {
            return true;
        }
    }
}