svgpropertyitem.java

完全基于java开发的svg矢量绘图工具

						setAttributeValue(propertyName, fvalues);
						
					}else if(propertyType.equals("child")){
					    
						setChildValue(propertyName, fvalues);
					}
					
					frame.getScrollPane().getSVGCanvas().delayedRepaint();	
				}
			};
				
			frame.enqueue(runnable);
			frame.setModified(true);

			//the undo/redo action that will be used to undo or redo the changes of the value for this property
			SVGUndoRedoAction action=new SVGUndoRedoAction(""){

				public void undo(){
				    
					//sets the old value
					if(propertyType.equals("style")){
					    
						setStylePropertyValue(propertyName, oldValues);
						
					}else if(propertyType.equals("attribute")){
					    
						setAttributeValue(propertyName, oldValues);
						
					}else if(propertyType.equals("child")){
					    
						setChildValue(propertyName, oldValues);
					}
					
					//redraws the window
					properties.handleProperties(properties.getSelectedNodes());
				}

				public void redo(){
				    
					//sets the new value
					if(propertyType.equals("style")){
					    
						setStylePropertyValue(propertyName, newValues);
						
					}else if(propertyType.equals("attribute")){
					    
						setAttributeValue(propertyName, newValues);
						
					}else if(propertyType.equals("child")){
					    
						setChildValue(propertyName, newValues);
					}
					
					//redraws the window
					properties.handleProperties(properties.getSelectedNodes());
				}
			};
			
			//creates the undo/redo list so that actions can be added to it
			SVGUndoRedoActionList actionlist=new SVGUndoRedoActionList(undoredoproperties);
			actionlist.add(action);
			
			if(properties.getSVGEditor().getUndoRedo()!=null){
			    
				properties.getSVGEditor().getUndoRedo().addActionList(frame, actionlist); 
			}
		}
	}
	
	/**
	 * @param name the name of the property in the style attribute
	 * @return the value of he property
	 */
	public String getStylePropertyValue(String name){
		
		//clears the map associating a node to its value
		propertyValues.clear();

		if(nodeList!=null){
		    
			String value="";
			Element element=null;
			
			//for each node in the list
			for(Iterator it=nodeList.iterator(); it.hasNext();){
			    
				try{element=(Element)it.next();}catch (Exception ex){element=null;}
			
				value=properties.getSVGEditor().getSVGToolkit().getStyleProperty(element, name);
				
				if(value==null || (value!=null && value.equals(""))){
				    
				    value=defaultPropertyValue;
				}
				
				if(element!=null){
				    
					propertyValues.put(element, value);
				}
			}
		}
		
		//the value that will be returned
		String returnedValue="";
		
		//if the list contains a single element, its value will be returned, otherwise the empty string is returned
		if(nodeList.size()==1){
		    
			try{
				returnedValue=(String)propertyValues.get(nodeList.getFirst());
			}catch (Exception ex){returnedValue="";}
		}

		return returnedValue;
	}
		
	/**
	 * @param name the name of the attribute 
	 * @return the value of the attribute
	 */
	public String getAttributeValue(String name){
		
		//clears the map associating a node to its value
		propertyValues.clear();
		
		String value="";
		Element element=null;
			
		//for each node in the list
		for(Iterator it=nodeList.iterator(); it.hasNext();){
		    
			try{
				element=(Element)it.next();
			}catch (Exception ex){element=null;}
			
			if(element!=null && name!=null && ! name.equals("")){
			    
				value=element.getAttribute(name);
			}
				
			if(value==null || (value!=null && value.equals(""))){
			    
			    value=defaultPropertyValue;
			}
				
			if(element!=null){
			    
				propertyValues.put(element, value);
			}
		}
		//the value that will be returned
		String returnedValue="";
			
		//if the list contains a single element, its value will be returned, otherwise the empty string is returned
		if(nodeList.size()==1){
		    
			try{
				returnedValue=(String)propertyValues.get(nodeList.getFirst());
			}catch (Exception ex){returnedValue="";}
		}

		return returnedValue;
	}
	
	/**
	 * @param name the name of the child node
	 * @return the value of the child node
	 */
	public String getChildValue(String name){
		
		//clears the map associating a node to its value
		propertyValues.clear();
		
		String value="";
		Node node=null, cur=null;
			
		//for each node in the list
		for(Iterator it=nodeList.iterator(); it.hasNext();){
		    
			try{node=(Node)it.next();}catch (Exception ex){node=null;}
			
			if(node!=null && name!=null && ! name.equals("")){
				
				//for each child of the given element, tests if the name of these children is equals to the parameter string
				for(cur=node.getFirstChild(); cur!=null; cur=cur.getNextSibling()){
				    
					if(cur.getNodeName().equals(name)){
					    
						value=cur.getNodeValue();
						break;
					}
				}
			}
				
			if(value==null || (value!=null && value.equals(""))){
			    
			    value=defaultPropertyValue;
			}

			if(node!=null){
			    
				//value=getSVGEditor().getSVGToolkit().normalizeTextNodeValue(value);
				propertyValues.put(node, value);
			}
		}
		
		//the value that will be returned
		String returnedValue="";
			
		//if the list contains a single element, its value will be returned, otherwise the empty string is returned
		if(nodeList.size()==1){
		    
			try{returnedValue=(String)propertyValues.get(nodeList.getFirst());}catch (Exception ex){returnedValue="";}
		}

		return returnedValue;
	}
		
	/**
	 * sets the value of a property in the style attribute
	 * @param name the name of the property
	 * @param values the map associating a node to its value of the property
	 */
	public void setStylePropertyValue(String name, LinkedHashMap values){
		
		if(nodeList!=null){

			Element element=null;
			String value="", oldValue="";
		
			//for each node in the list
			for(Iterator it=nodeList.iterator(); it.hasNext();){
			    
				try{
					element=(Element)it.next();
					value=(String)values.get(element);
					oldValue=(String)propertyValues.get(element);
				}catch (Exception ex){element=null;value=null;oldValue="";}
			
				if(element!=null && name!=null && ! name.equals("") && value!=null && ! value.equals(oldValue)){
						
					properties.getSVGEditor().getSVGToolkit().setStyleProperty(element, name, value);
				}				
			}
		}
		
		generalPropertyValue=getStylePropertyValue(name);
	}
		
	/**
	 * sets the value of the given attribute
	 * @param name the name of the attribute
	 * @param values the map associating a node to its value of the property
	 */
	public void setAttributeValue(String name, LinkedHashMap values){
		
		if(nodeList!=null){
			
			Element element=null;
			String value="", oldValue="";
		
			//for each node in the list
			for(Iterator it=nodeList.iterator(); it.hasNext();){
			    
				try{
					element=(Element)it.next();
					value=(String)values.get(element);
					oldValue=(String)propertyValues.get(element);
				}catch (Exception ex){element=null;value=null;oldValue="";}
			
				if(element!=null && name!=null && ! name.equals("") && value!=null && ! value.equals(oldValue)){
				    
					//sets the value of the attribute
					element.setAttribute(name, value);
				}
			}
		}
		
		generalPropertyValue=getAttributeValue(name);
	}
	
	/**
	 * sets the value of the child with the given name
	 * @param name the name of the child node
	 * @param values the map associating a node to its value of the property
	 */
	public void setChildValue(String name, LinkedHashMap values){
		
		if(nodeList!=null){

			Element element=null;
			String value="", oldValue="";
		
			//for each node in the list
			for(Iterator it=nodeList.iterator(); it.hasNext();){
			    
				try{
					element=(Element)it.next();
					value=(String)values.get(element);
					oldValue=(String)propertyValues.get(element);
				}catch (Exception ex){element=null;value=null;oldValue="";}
			
				if(element!=null && name!=null && ! name.equals("") && value!=null && ! value.equals(oldValue)){
						
					//checks all the child nodes of the element to find the text node, if it is found, sets its value
					for(Node cur=element.getFirstChild(); cur!=null; cur=cur.getNextSibling()){
					    
						if(cur.getNodeName().equals(name)){
						    
							//sets the value of the node
							cur.setNodeValue(value);
							break;
						}
					}
				}
			}
		}
		
		generalPropertyValue=getChildValue(name);
	}
}