svgclipboard.java

完全基于java开发的svg矢量绘图工具

			
			final SVGSelection selection=editor.getSVGSelection();
			Element parent=null;

			if(selection!=null){
			    
			    parent=selection.getCurrentParentElement(frame);
			}

			if(parent!=null){
			    
			    final Document doc=frame.getScrollPane().getSVGCanvas().getDocument();
				
			    //the list of the pasted nodes
			    final LinkedList pastedNodes=new LinkedList();
			    
				//clones the nodes
				final LinkedList pasteList=new LinkedList(clipboardContent);
				Node current=null;
				String sid="";
				
				for(Iterator it=pasteList.iterator(); it.hasNext();){
				    
					current=(Node)it.next();
					
					if(current!=null && current instanceof Element){
					    
						sid=frame.getId("");
						((Element)current).setAttribute("id", sid);
					}
				}
				
				final Element fparent=parent;

				//the runnable
				Runnable runnable=new Runnable(){
				    
					public void run(){
					    
                        //the defs node
                        final Element defs=frame.getDefsElement();
                        
					    //the list of the resources used by the pasted nodes
					    LinkedList resNodes=new LinkedList();
					    
					    //the list of the resources imported into the current document
					    final LinkedList usedResourceNodes=new LinkedList();

						Iterator it, it2, it3;
						Element current=null;
						LinkedList resourceNodes=null;
			            Element res=null;
			            Node node=null;

						for(it=pasteList.iterator(); it.hasNext();){
						    
							try{
								current=(Element)it.next();
							}catch (Exception ex){current=null;}

							if(current!=null){
							    
						        //getting all the resource nodes used by this node
						        resourceNodes=getSVGEditor().getSVGToolkit().getResourcesUsedByNode((Element)current, true);

							    //if the copied node does not belong to this svg document
							    if(! current.getOwnerDocument().equals(doc)){

						            //for each resource node, check if it is contained in the list of the resources used by the copied nodes
						            for(it2=resourceNodes.iterator(); it2.hasNext();){
						                
						                try{res=(Element)it2.next();}catch (Exception ex){res=null;}
						                
						                if(res!=null && ! resNodes.contains(res)){
						                    
						                    resNodes.add(res);
						                }
						            }
							    }
							    
								current=(Element)doc.importNode(current, true);
								pastedNodes.add(current);
							}
						}
						
						String resId="", newId="", style="";
						
						//adds the resource nodes to the defs element
						for(it=resNodes.iterator(); it.hasNext();){
						    
						    try{
						        res=(Element)doc.importNode((Element)it.next(), true);
						        resId=res.getAttribute("id");
						    }catch (Exception ex){res=null; resId=null;}
						    
						    if(res!=null && resId!=null){

						        if(! frame.checkId(resId)){
						            
						            //creating the new id
						            newId=frame.getId(resId);
						            
						            //modifying the id of the resource
						            res.setAttribute("id", newId);
						            
						            //for each pasted node, modifies the name of the resource they use
						            for(it2=pastedNodes.iterator(); it2.hasNext();){
						                
						                try{
						                    current=(Element)it2.next();
						                }catch (Exception ex){current=null;}
						                
						                if(current!=null){
						                    
						                    style=current.getAttribute("style");

						                    if(style!=null && style.indexOf("#".concat(resId))!=-1){
						                        
						                        style=style.replaceAll("#".concat(resId)+"[)]", "#".concat(newId)+")");
						                        current.setAttribute("style", style);
						                        frame.addNodeUsingResource(newId, current);
						                    }
						                    
						                    //modifies the nodes of the subtree under the pasted node
						                    for(it3=new NodeIterator(current); it3.hasNext();){
						                    	
						                    	node=(Node)it3.next();
						                    	
						                    	if(    node!=null && ! node.equals(current) && 
						                    	        node instanceof Element && ((Element)node).hasAttribute("style")){
						                    		
								                    style=((Element)node).getAttribute("style");

								                    if(style!=null && style.indexOf("#".concat(resId))!=-1){
								                        
								                        style=style.replaceAll("#".concat(resId)+"[)]", "#".concat(newId)+")");
								                        ((Element)node).setAttribute("style", style);
								                        frame.addNodeUsingResource(newId, node);
								                    }
						                    	}
						                    }
						                }
						            }
						        }
						        
						        //adding the resource node to the defs element and the list of the resource nodes
						        defs.appendChild(res);
						        usedResourceNodes.add(res);
						    }
						}
						
						//appends the nodes to their parent and registers those which use resources
						//checks if the sub tree of the pasted nodes require a specific name space
						Node cur=null;
						NodeIterator nit=null;
						String prefix="", nsp="";
						int pos=0;
						HashMap<String, String> nameSpaces=new HashMap<String, String>(SVGEditor.requiredNameSpaces);

						for(it=pastedNodes.iterator(); it.hasNext();){
						    
						    try{
						        current=(Element)it.next();
						    }catch (Exception ex){current=null;}
						    
						    if(current!=null){
						        
								fparent.appendChild(current);
						        frame.registerUsedResource(current);
						        
						        nit=new NodeIterator(current);

						        //checks if the nodes under the pasted nodes use a specific name space
						        do{

						        	if(nit.hasNext()){
						        		
						        		cur=nit.next();
						        		
						        	}else{
						        		
								        cur=current;
						        	}
						        	
						        	if(cur!=null && cur instanceof Element){

						        		pos=cur.getNodeName().indexOf(":");
						        		
						        		if(pos!=-1){
						        			
						        			prefix=cur.getNodeName().substring(0, pos);
						        			nsp=nameSpaces.get(prefix);
						        			
						        			if(nsp!=null){
						        				
						        				SVGToolkit.checkXmlns(cur.getOwnerDocument(), prefix, nsp);
						        				nameSpaces.remove(prefix);
						        			}
						        		}
						        	}
						        	
						        }while(nit.hasNext());
						    }
						}
						
						//adds the undo/redo action list
						if(editor.getUndoRedo()!=null){
						    
							final SVGFrame frm=frame;
						
							SVGUndoRedoAction action=new SVGUndoRedoAction(undoredopaste){

								public void undo(){
								    
									Iterator it;
									Node current=null;
									
									//removes the added children from the parent node
									for(it=pastedNodes.iterator(); it.hasNext();){
									    
										try{current=(Node)it.next();}catch (Exception e){current=null;}
										
										if(current!=null){
										    
										    fparent.removeChild(current);
										    
											//unregister the current node to the used resources map if it uses a resource
											frame.unregisterAllUsedResource(current);
										}
									}
									
									//removes the added resources
									for(it=usedResourceNodes.iterator(); it.hasNext();){
									    
										try{current=(Node)it.next();}catch (Exception e){current=null;}
										
										if(current!=null){
										    
										    defs.removeChild(current);
										}
									}
									
									//refreshing the properties and the resources frame
									getSVGEditor().getSVGToolkit().forceReselection();
									getSVGEditor().getFrameManager().frameChanged();
								}

								public void redo(){
								    
									Iterator it;
									Node current=null;
								    
									//appends the resources
									for(it=usedResourceNodes.iterator(); it.hasNext();){
									    
										try{current=(Node)it.next();}catch (Exception e){current=null;}
										
										if(current!=null){
										    
										    defs.appendChild(current);
										}
									}
									
									//appends the children
									for(it=pastedNodes.iterator(); it.hasNext();){
									    
										try{current=(Node)it.next();}catch (Exception e){current=null;}
										
										if(current!=null){
										    
										    fparent.appendChild(current);
										    
											//registers the current node to the used resources map if it uses a resource
											frame.registerUsedResource(current);
										}
									}
									
									//refreshing the properties and the resources frame
									getSVGEditor().getSVGToolkit().forceReselection();
									getSVGEditor().getFrameManager().frameChanged();
								}
							};
						
							if(selection!=null && ! selection.isActing()){

							    selection.deselectAll(frame, false, true);  
								selection.addUndoRedoAction(frame, action);
								
								for(it=pastedNodes.iterator(); it.hasNext();){
								    
								    try{node=(Node)it.next();}catch (Exception ex){node=null;}
									
								    if(node!=null && node instanceof Element){
								        
								        selection.handleNodeSelection(frame, (Element)node);	
								    }			
								}
								
								selection.addUndoRedoAction(frame, new SVGUndoRedoAction(undoredopaste){});
								selection.refreshSelection(frame);
							
							}else{
							    
								//creates the undo/redo list and adds the action to it					
								SVGUndoRedoActionList actionlist=new SVGUndoRedoActionList(undoredopaste);
								actionlist.add(action);
								editor.getUndoRedo().addActionList(frame, actionlist);
							}
						}
						
						//refreshing the resources frame
						getSVGEditor().getFrameManager().frameChanged();
					}
				};
				
				//appends the nodes to the root element with the correct id
				frame.enqueue(runnable);
			}
		}
	}
	
	/**
	 * cuts the current selection
	 */
	public void cut(){
	    
		//copies the nodes
		copy();
		
		//removes the nodes
		delete(false);
	}
	
	/**
	 * deletes the selected nodes
	 * @param isDelete true if it is used in the delete action
	 * 								false if it is used in the cut action
	 */
	public void delete(boolean isDelete){
		
		final SVGFrame frame=editor.getFrameManager().getCurrentFrame();
		
		if(frame!=null && selectedNodes.size()>0){
			
			final LinkedList deletedlist=new LinkedList(selectedNodes);
			
			SVGSelection selection=editor.getSVGSelection();
			Node parent=null;
			
			if(selection!=null){
			    
				parent=selection.getCurrentParentElement(frame);
			}
			
			Document doc=frame.getScrollPane().getSVGCanvas().getDocument();
			final Node fparent=parent;
			
			if(fparent!=null){

				Node current=null;
				Runnable runnable=new Runnable(){
				    
					public void run(){
						
						Node current=null;

						for(Iterator it=deletedlist.iterator(); it.hasNext();){
						    
							try{
								current=(Node)it.next();
							}catch (Exception e){current=null;}
							
							if(current!=null && current.getParentNode()!=null && current.getParentNode().equals(fparent)){
							    
							    fparent.removeChild(current);
								
								//unregister the current node to the used resources map if it uses a resource
								frame.unregisterAllUsedResource(current);
							}
						}
					}
				};
				
				frame.enqueue(runnable);

				//adds the undo/redo action list			
				if(editor.getUndoRedo()!=null){
			
					final SVGFrame frm=frame;
			
					String undoredo="";
					
					if(isDelete){
					    
					    undoredo=undoredodelete;
					    
					}else{
					    
					    undoredo=undoredocut;
					}

					SVGUndoRedoAction action=new SVGUndoRedoAction(undoredo){

						public void undo(){
						    
							//appends the children to the root element						
							Node current=null;
							
							for(Iterator it=deletedlist.iterator(); it.hasNext();){
							    
								try{current=(Node)it.next();}catch (Exception e){current=null;}
								
								if(current!=null){
								    
								    fparent.appendChild(current);
								    
									//unregisters the current node to the used resources map if it uses a resource
									frame.registerUsedResource(current);
								}
							}
						}

						public void redo(){
						    
							//removes the children from the root element						
							Node current=null;
							
							for(Iterator it=deletedlist.iterator(); it.hasNext();){
							    
								try{current=(Node)it.next();}catch (Exception e){current=null;}
								
								if(current!=null && current.getParentNode()!=null && current.getParentNode().equals(fparent)){
								    
								    fparent.removeChild(current);
									
									//register the current node to the used resources map if it uses a resource
									frame.unregisterAllUsedResource(current);
								}
							}
						}
					};
			
					if(selection!=null){
					    
					    selection.deselectAll(frame, false, true);
						selection.addUndoRedoAction(frame, action);
						selection.addUndoRedoAction(frame, new SVGUndoRedoAction(undoredo){});
						selection.refreshSelection(frame);

					}else{
					    
						//creates the undo/redo list and adds the action to it					
						SVGUndoRedoActionList actionlist=new SVGUndoRedoActionList(undoredo);
						actionlist.add(action);
						editor.getUndoRedo().addActionList(frame, actionlist);
					}
				}
			}
		}
	}

	/**
	 * gets the name of the module
	 * @return the name of the module
	 */
	public String getName(){
	    
		return idclipboard;
	}

}