outlinepage.java

对eclipse gef进行封装,可以生成图形化编辑器

/*******************************************************************************
 * $Header: /cvsroot/EOS6/work_dir/niegy/com.primeton.studio.gef.ui/src/com/primeton/studio/gef/ui/editor/OutlinePage.java,v 1.1 2006/11/17 03:15:13 niegy Exp $
 * $Revision: 1.1 $
 * $Date: 2006/11/17 03:15:13 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved. 
 * 
 * Created on 2006-9-27
 *******************************************************************************/


package com.primeton.studio.gef.ui.editor;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.Viewport;
import org.eclipse.draw2d.parts.ScrollableThumbnail;
import org.eclipse.draw2d.parts.Thumbnail;
import org.eclipse.gef.ContextMenuProvider;
import org.eclipse.gef.EditPartFactory;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.RootEditPart;
import org.eclipse.gef.editparts.ScalableFreeformRootEditPart;
import org.eclipse.gef.editparts.ZoomManager;
import org.eclipse.gef.ui.actions.ActionRegistry;
import org.eclipse.gef.ui.parts.ContentOutlinePage;
import org.eclipse.gef.ui.parts.TreeViewer;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.part.IPageSite;
import org.eclipse.ui.part.PageBook;

import com.primeton.studio.gef.ui.GefUiPluginImages;

/**
 * TODO此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: OutlinePage.java,v $
 * Revision 1.1  2006/11/17 03:15:13  niegy
 * create
 * 
 */
public class OutlinePage extends ContentOutlinePage implements IAdaptable {

    private static final int ID_OUTLINE = 0;

    private static final int ID_OVERVIEW = 1;

    private PageBook pageBook;

    private Control outline;

    private Canvas overview;

    private Thumbnail thumbnail;

    private IAction showOutlineAction;

    private IAction showOverviewAction;
    
    private AbstractGraphicalEditor fEditor;
    
    private EditPartFactory fEditPartFactory;
    
    private ContextMenuProvider fContextMenuProvider;
    
    private Object fModel;

    public OutlinePage(AbstractGraphicalEditor editor,EditPartFactory editPartFactory,
            ContextMenuProvider contextMenuProvider,Object model) {
        super(new TreeViewer());
        fEditor = editor;
        fEditPartFactory = editPartFactory;
        fContextMenuProvider = contextMenuProvider;
        fModel = model;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
     */
    public Object getAdapter(Class type) {
        if (type == ZoomManager.class) {
            return fEditor.getAdapter(type);
        } else {
            return null;
        }
    }

    public void createControl(Composite parent) {
        this.pageBook = new PageBook(parent, SWT.NONE);
        this.outline = getViewer().createControl(pageBook);
        this.overview = new Canvas(pageBook, SWT.NONE);
        this.pageBook.showPage(outline);
        configureOutlineViewer();
        hookOutlineViewer();
        initializeOutlineViewer();
    }

    protected void configureOutlineViewer() {
        getViewer().setEditDomain(fEditor.getEditDomain());
        getViewer().setEditPartFactory(fEditPartFactory);
      
        getViewer().setContextMenu(fContextMenuProvider);
        getSite().registerContextMenu(
                "com.primeton.studio.gef.ui.outline.contextmenu", //$NON-NLS-1$
                fContextMenuProvider, getSite().getSelectionProvider());  
        
        IToolBarManager tbm = getSite().getActionBars().getToolBarManager();
        showOutlineAction = new Action() {
            public void run() {
                showPage(ID_OUTLINE);
            }
        };
        showOutlineAction.setImageDescriptor(GefUiPluginImages.GEF_OUTLINE);
        tbm.add(showOutlineAction);
        showOverviewAction = new Action() {
            public void run() {
                showPage(ID_OVERVIEW);
            }
        };
        showOverviewAction.setImageDescriptor(GefUiPluginImages.GEF_OVERVIEW);
        tbm.add(showOverviewAction);
        showPage(ID_OUTLINE);
    }

    protected void hookOutlineViewer() {
        fEditor.getSelectionSynchronizer().addViewer(getViewer());
    }

    public void initializeOutlineViewer() {
        getViewer().setContents(fModel);
    }

    protected void initializeOverview() {
        LightweightSystem lightweightSystem = new LightweightSystem(
                overview);
        RootEditPart rootEditPart = fEditor.getRootEditPart();
        if (rootEditPart instanceof ScalableFreeformRootEditPart) {
            ScalableFreeformRootEditPart root = (ScalableFreeformRootEditPart) rootEditPart;
            this.thumbnail = new ScrollableThumbnail((Viewport) root
                    .getFigure());
            this.thumbnail.setBorder(new MarginBorder(3));
            this.thumbnail.setSource(root
                    .getLayer(LayerConstants.PRINTABLE_LAYERS));
            lightweightSystem.setContents(this.thumbnail);
        }
    }

    protected void showPage(int id) {
        if (id == ID_OUTLINE) {
            showOutlineAction.setChecked(true);
            showOverviewAction.setChecked(false);
            pageBook.showPage(outline);
            if (thumbnail != null)
                thumbnail.setVisible(false);
        } else if (id == ID_OVERVIEW) {
            if (thumbnail == null)
                initializeOverview();
            showOutlineAction.setChecked(false);
            showOverviewAction.setChecked(true);
            pageBook.showPage(overview);
            thumbnail.setVisible(true);
        }
    }

    protected void unhookOutlineViewer() {
        fEditor.getSelectionSynchronizer().removeViewer(getViewer());
    }

    public void dispose() {
        unhookOutlineViewer();
        if (this.thumbnail != null)
            this.thumbnail.deactivate();
        super.dispose();
    }

    public Control getControl() {
        return this.pageBook;
    }
    
    public void init(IPageSite pageSite) {
        super.init(pageSite);
        ActionRegistry registry = fEditor.getActionRegistry();
        IActionBars bars = pageSite.getActionBars();
        String id = ActionFactory.UNDO.getId();
        bars.setGlobalActionHandler(id, registry.getAction(id));
        id = ActionFactory.REDO.getId();
        bars.setGlobalActionHandler(id, registry.getAction(id));
        id = ActionFactory.DELETE.getId();
        bars.setGlobalActionHandler(id, registry.getAction(id));
    }



}