abstractgraphicaleditor.java

对eclipse gef进行封装,可以生成图形化编辑器

            (ScalableFreeformRootEditPart)viewer.getRootEditPart();
        ConnectionLayer connLayer =
            (ConnectionLayer)root.getLayer(LayerConstants.CONNECTION_LAYER);
        GraphicalEditPart contentEditPart = (GraphicalEditPart)root.getContents();
        
        viewer.addDropTargetListener(createTransferDropTargetListener());
        
//        ISelectionChangedListener action=(ISelectionChangedListener) getActionRegistry().getAction(ActionFactory.UNDO.getId());
//        viewer.addSelectionChangedListener(action);
        ////////////////////////////////////////////////////////
        ISelectionChangedListener action = (ISelectionChangedListener) getActionRegistry().getAction(ActionFactory.COPY.getId());
        viewer.addSelectionChangedListener(action);
        
        action=(ISelectionChangedListener) getActionRegistry().getAction(ActionFactory.CUT.getId());
        viewer.addSelectionChangedListener(action);

        action=(ISelectionChangedListener) getActionRegistry().getAction(ActionFactory.PASTE.getId());
        viewer.addSelectionChangedListener(action);
        
        action=(ISelectionChangedListener) getActionRegistry().getAction(Constants.ATTRIBUTE);
        viewer.addSelectionChangedListener(action);
        
        action=(ISelectionChangedListener) getActionRegistry().getAction(Constants.OPERAND);
        viewer.addSelectionChangedListener(action);
        
        action=(ISelectionChangedListener) getActionRegistry().getAction(Constants.ENTER);
        viewer.addSelectionChangedListener(action);
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.ui.part.EditorPart#setInput(org.eclipse.ui.IEditorInput)
     */
    protected void setInput(IEditorInput input) {
        super.setInput(input);
        IFile file = ((IFileEditorInput) input).getFile();
        try{
            fModel = create(file);
            setPartName(file.getName());
        }
        catch(CoreException e)
        {
            e.printStackTrace();
        }
        

    }
    
    /**
     * 命令栈改变
     */
    public void commandStackChanged(EventObject event) {
        firePropertyChange(IEditorPart.PROP_DIRTY);
        super.commandStackChanged(event);
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.gef.ui.parts.GraphicalEditorWithFlyoutPalette#createPaletteViewerProvider()
     */
    protected PaletteViewerProvider createPaletteViewerProvider() {
        paletteViewerProvider = new PaletteViewerProvider(getEditDomain()) {
            protected void configurePaletteViewer(PaletteViewer viewer) {
                super.configurePaletteViewer(viewer);
                // create a drag source listener for this palette viewer
                // together with an appropriate transfer drop target listener, this will enable
                // model element creation by dragging a CombinatedTemplateCreationEntries 
                // from the palette into the editor
                transferDragSourceListener = new TemplateTransferDragSourceListener(viewer);
                viewer.addDragSourceListener(transferDragSourceListener);
            }
        };
        return paletteViewerProvider;
    }
    
    /**
     * 创建一个接受拖动作的监听器
     */
    protected TransferDropTargetListener createTransferDropTargetListener() {
        // TODO Auto-generated method stub
        return new TemplateTransferDropTargetListener(getGraphicalViewer()) {
            protected CreationFactory getFactory(Object template) {
            	Diagram diagram = (Diagram)getModel();
        		EClass eClass = diagram.eClass();
        		String editorType = eClass.getEPackage().getNsPrefix();
                return ExtenderReader.getInstance().createModelCreationFactory(getPluginId(),template);
            }
        };
    }
    
    public boolean isDirty() {  
        return getCommandStack().isDirty();
    }
    
    /**
     * 创建编辑器action
     */
    protected void createActions() {
        super.createActions();

        IAction action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.LEFT);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.CENTER);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.RIGHT);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.TOP);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.MIDDLE);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new AlignmentAction((IWorkbenchPart)this,PositionConstants.BOTTOM);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new MatchWidthAction((IWorkbenchPart)this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        action=new MatchHeightAction((IWorkbenchPart)this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action=new DirectEditAction((IWorkbenchPart)this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new DeleteAction((IWorkbenchPart)this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new SelectAllAction(this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());

        
        action = new ShowPropertiesAction(this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
                
        action = new UndoAction(this);
        getActionRegistry().registerAction(action);
        getStackActions().add(action.getId());
        
        action = new RedoAction(this);
        getActionRegistry().registerAction(action);
        getStackActions().add(action.getId());
        
        ////////////////////////////////////////////
        action = new CopyNodeAction(this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
    
        action = new CutNodeAction(this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new PasteNodeAction(this);
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new AttributeAction(this,getAttributeTitle());
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new OperandAction(this,getOperandTitle());
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new EnterAction(this,"");
        getActionRegistry().registerAction(action);
        getSelectionActions().add(action.getId());
        
        action = new GroupNodeAction(this);
        getActionRegistry().registerAction(action);
		getSelectionActions().add(action.getId());
		
		action = new UnGroupNodeAction(this);
		getActionRegistry().registerAction(action);
		getSelectionActions().add(action.getId());
    }
    
    protected String getAttributeTitle(){
    	return "New Attribute";
    }
    
    protected String getOperandTitle(){
    	return "New Operand";
    }
    /* (non-Javadoc)
     * @see org.eclipse.gef.ui.parts.GraphicalEditorWithFlyoutPalette#getPalettePreferences()
     */
    protected FlyoutPreferences getPalettePreferences() {
//      return DataFlowEditorPaletteFactory.createPalettePreferences();
        return createPalettePreferences();
    }
    private FlyoutPreferences createPalettePreferences() {
        flyoutPreferences = new FlyoutPreferences() {
            private IPreferenceStore getPreferenceStore() {
                return GefUiPlugin.getDefault().getPreferenceStore();
            }
            public int getDockLocation() {
                return getPreferenceStore().getInt(PALETTE_DOCK_LOCATION);
            }
            public int getPaletteState() {
                return getPreferenceStore().getInt(PALETTE_STATE);
            }
            public int getPaletteWidth() {
                return getPreferenceStore().getInt(PALETTE_SIZE);
            }
            public void setDockLocation(int location) {
                getPreferenceStore().setValue(PALETTE_DOCK_LOCATION, location);
            }
            public void setPaletteState(int state) {
                getPreferenceStore().setValue(PALETTE_STATE, state);
            }
            public void setPaletteWidth(int width) {
                getPreferenceStore().setValue(PALETTE_SIZE, width);
            }
        };
        return flyoutPreferences;
    }
    
    
    public void dispose() {
    	 super.dispose();
        if(fCommandStack != null){
            fCommandStack.dispose();
            fCommandStack = null;
        }
        getGraphicalViewer().removeDragSourceListener(transferDragSourceListener);
        transferDragSourceListener = null;      
        flyoutPreferences = null;    
        paletteViewerProvider = null;     
    }
    
    public Object getAdapter(Class type) {
        if(type == ActionRegistry.class)
            GefUiPlugin.getDefault().setErrorStatusMessage(null);
        if (type == IContentOutlinePage.class){
             outLinePage = new OutlinePage(this,fEditPartFactory,fContextMenuProvider,fModel);
             return outLinePage;
        }   
//        if (type == IContentOverviewPage.class)
//            return new ContentOverviewPage(getGraphicalViewer());
        
        if (type == ZoomManager.class)
            return getGraphicalViewer().getProperty(ZoomManager.class.toString());   
        if (type == IPropertySheetPage.class) {
            PropertySheetPageEx page = new PropertySheetPageEx();
            page.setRootEntry(new PropertySheetEntryEx());
            page.setPropertyMenuManager(fPropertyMenuManager);
            page.setCommandStack(this.fCommandStack);;
            return page;
        }
        
        
        return super.getAdapter(type);
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.gef.ui.parts.GraphicalEditor#getEditDomain()
     */
    
    public DefaultEditDomain getEditDomain() {
        // TODO Auto-generated method stub
        return super.getEditDomain();
    }

    /* (non-Javadoc)
     * @see org.eclipse.gef.ui.parts.GraphicalEditor#getSelectionSynchronizer()
     */
    
    public SelectionSynchronizer getSelectionSynchronizer() {
        // TODO Auto-generated method stub
        return super.getSelectionSynchronizer();
    }
    
    public RootEditPart getRootEditPart() {
        return getGraphicalViewer().getRootEditPart();
    }

    /* (non-Javadoc)
     * @see org.eclipse.gef.ui.parts.GraphicalEditor#getActionRegistry()
     */
    
    public ActionRegistry getActionRegistry() {
        // TODO Auto-generated method stub
        return super.getActionRegistry();
    }  

}