SmartApplication.java

/*
 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * 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.
 *
 * Contributors:
 *     bstefanescu
 *
 * $Id$
 */

package org.nuxeo.ecm.platform.gwt.client.ui.impl;

import org.nuxeo.ecm.platform.gwt.client.ErrorHandler;
import org.nuxeo.ecm.platform.gwt.client.Extensible;
import org.nuxeo.ecm.platform.gwt.client.Framework;
import org.nuxeo.ecm.platform.gwt.client.SmartClient;
import org.nuxeo.ecm.platform.gwt.client.ui.Drawable;
import org.nuxeo.ecm.platform.gwt.client.ui.ExtensionPoints;
import org.nuxeo.ecm.platform.gwt.client.ui.UI;
import org.nuxeo.ecm.platform.gwt.client.ui.UIApplication;
import org.nuxeo.ecm.platform.gwt.client.ui.View;
import org.nuxeo.ecm.platform.gwt.client.ui.editor.EditorManager;
import org.nuxeo.ecm.platform.gwt.client.ui.editor.EditorSite;
import org.nuxeo.ecm.platform.gwt.client.ui.view.ViewManager;

import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.layout.VLayout;

/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 *
 */
public class SmartApplication implements UIApplication, Extensible, ExtensionPoints, ErrorHandler {

    protected VLayout layout;

    protected Drawable header;
    protected Drawable footer;
    protected EditorManager content;
    protected View left;
    protected ViewManager right;



    public SmartApplication() {
    }

    public void start() {
        // install fixes and workarounds
        SmartClient.install();

        // set error handler
        Framework.setErrorHandler(this);

        // create application layout
        layout = new VLayout();
//layout.setBorder("1px solid blue");
        layout.setSize("100%", "100%");
        layout.setLayoutMargin(4);
        if (header != null) {
            Canvas canvas = SmartClient.toCanvas(header.getWidget());
            canvas.setHeight("80");
            layout.addMember(canvas);
        }
        HLayout main = new HLayout();
        if (left != null) {
            left.install(null, null); // trick to refresh view stack TODO: must implement a site.
            Canvas canvas = SmartClient.toCanvas(left.getWidget());
            canvas.setSize("25%", "100%");
            main.addMember(canvas);
        }
        if (content != null) {
            String width = right == null ? "75%" : "50%";
            Canvas canvas = SmartClient.toCanvas(((Drawable)content).getWidget());
            canvas.setSize(width, "100%");
            main.addMember(canvas);
        }
        if (right != null) {
            Canvas canvas = SmartClient.toCanvas(((Drawable)right).getWidget());
            canvas.setSize("25%", "100%");
            canvas.setShowResizeBar(true);
            main.addMember(canvas);
        }
        int size = 100;
        if (header != null) size -= 4;
        if (footer != null) size -= 4;
        main.setHeight("100%");
//main.setBorder("1px solid red");
        layout.addMember(main);
        if (footer != null) {
            Canvas canvas = SmartClient.toCanvas(footer.getWidget());
            canvas.setHeight("4%");
            layout.addMember(canvas);
        }

        // install into root panel
        RootPanel.get().add(layout);
    }

    public Drawable getLeftArea() {
        return left;
    }

    public ViewManager getRightArea() {
        return right;
    }

    public EditorManager getEditorManager() {
        return content;
    }

    public Drawable getHeader() {
        return header;
    }

    public Drawable getFooter() {
        return footer;
    }



    public View getView(String[] segments) {
        return getView(segments, segments.length);
    }

    public View getView(String[] segments, int length) {
        return null;
    }

    public View getView(String path) {
        String[] segments = path.split("/");
        if (segments.length == 0) {
            return null;
        }
        return getView(segments);
    }


    public void showView(String id) {
//        if (left != null) {
//            View v = left.getView(id);
//            if (v != null) {
//                left.showView(id);
//                return;
//            }
//        }
//        if (right != null) {
//            View v = right.getView(id);
//            if (v != null) {
//                right.showView(id);
//            }
//        }
    }

    public void openInEditor(Object input) {
        content.openEditor(input);
    }

    public void openInNewEditor(Object input) {
        content.openEditor(input, true);
    }

    public View getActiveEditor() {
        EditorSite esite = content.getActiveEditor();
        if (esite != null) {
            View view = esite.getView();
            if (view.isInstalled()) {
                return view;
            }
        }
        return null;
    }

    public void registerExtension(String target, Object extension) {
        if (LEFT_AREA_XP.equals(target) ) {
            left = (View)extension;
        } else if (CONTENT_AREA_XP.equals(target)) {
            content = (EditorManager)extension;
        } else if (RIGHT_AREA_XP.equals(target)) {
            right = (ViewManager)extension;
        } else if (HEADER_AREA_XP.equals(target)) {
            header = (View)extension;
        } else if (FOOTER_AREA_XP.equals(target)) {
            footer = (View)extension;
        }
    }


    public void handleError(Throwable t) {
        UI.showError(t);
    }


}