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6.12 增加对Palette的拖放支持

2024-07-07 23:32:17   221人阅读

http://www.myexception.cn/open-source/414042.html

默认情况下，GEF中要创建一个新的结点都是通点在Palette上选择一个结点，然后在Editor区域单击实现的。

也有一些是通过拖放Palette中的一个对象到Editor区域来实现的。

要实现一个拖放支持也是很容易的。GEF中默认实现了一组drag-drop listener用来支持拖放实现：

1.TemplateTransferDropTargetListener

因为是要从palette上拖到Editor中，所以此监听事件显示是应该安放在Editor上，在GEF中就是GraphicalViewer，可以在initializeGraphicalViewer()方法中加上：

getGraphicalViewer().addDropTargetListener(new TemplateTransferDropTargetListener(getGraphicalViewer()));

2.TemplateTransferDragSourceListener

显示此事件需要加在palette上，也就是PaletteViewer上，可以在initializePaletteViewer()方法中加上：

getPaletteViewer().addDragSourceListener(new TemplateTransferDragSourceListener(getPaletteViewer()));

 

 

回头再看一下我们对Palette上的Item的声明：

CombinedTemplateCreationEntry(String label, String shortDesc,
  CreationFactory factory, ImageDescriptor iconSmall, ImageDescriptor iconLarge)

需要注意CombinedTemplateCreationEntry构造方法的选用。认为上述构造方法为默认选择，而CreationFactory类为SimpleFactory。

如果选择另一个构造方法：

CombinedTemplateCreationEntry(String label, String shortDesc, Object template,
  CreationFactory factory, ImageDescriptor iconSmall, ImageDescriptor iconLarge)

则我们需要注意：如果template和factory都是SimpleFactory则没有问题，因为默认的template就是SimpleFactory。

ToolEntry tool = new CombinedTemplateCreationEntry("Node", "Create a new Node", Node.class, new SimpleFactory(Node.class), null, null);

否则我们需要根据自己的template值（比如Node.class）来得到对应的model，也就是要实现自己的CreationFactory。

我们的调色板里需要有三种工具：选择工具、节点工具和连接工具。在GEF里，调色板里可以有抽屉（PaletteDrawer）把各种工具归类放置，每个工具都是一个ToolEntry，选择工具（SelectionToolEntry）和连接工具（ConnectionCreationToolEntry）是预先定义好的几种工具中的两个， 所以可以直接使用。对于节点工具，要使用CombinedTemplateCreationEntry。

 

比如：

CombinedTemplateCreationEntry elementCreationEntry = new CombinedTemplateCreationEntry(  
        "Element"（显示名）, "Element type"（简单描述）,ModelCreationFactory.ELEMENT_TYPE,new ModelCreationFactory(ModelCreationFactory.ELEMENT_TYPE), Activator.getImageDescriptor("icons/element.png"), Activator.getImageDescriptor("icons/element.png"));  

CombinedTemplateCreationEntry attributeCreationEntry = new CombinedTemplateCreationEntry(  
        "Attribute", "Attribute type",ModelCreationFactory.ATTRIBUTE_TYPE, new ModelCreationFactory(ModelCreationFactory.ATTRIBUTE_TYPE), Activator  
                .getImageDescriptor("icons/attribute.png"), Activator  
                .getImageDescriptor("icons/attribute.png"));  
 1 public class ModelCreationFactory implements CreationFactory {  
 2   
 3     private int objectType;  
 4   
 5     public static final int ELEMENT_TYPE = 0x01;  
 6     public static final int ATTRIBUTE_TYPE = 0x02;  
 7     public static final int ROOT_TYPE = 0x04;  
 8   
 9     public ModelCreationFactory(int objectType) {  
10         super();  
11         this.objectType = objectType;  
12     }  
13   
14     public Object getNewObject() {  
15         switch (objectType) {  
16         case ELEMENT_TYPE:  
17             return new ElementType();  
18         case ATTRIBUTE_TYPE:  
19             return new AttributeType();  
20         case ROOT_TYPE:  
21             return new RootType();  
22         default:  
23             break;  
24         }  
25         return null;  
26     }  
27   
28     public Object getObjectType() {  
29         return objectType;  
30     }  
31   
32 }  
getGraphicalViewer().addDropTargetListener(new CustomTemplateTransferDropTargetListener(  
                getGraphicalViewer()));  
 1 public class CustomTemplateTransferDropTargetListener extends  
 2         TemplateTransferDropTargetListener {  
 3   
 4     public CustomTemplateTransferDropTargetListener(EditPartViewer viewer) {  
 5         super(viewer);  
 6     }  
 7   
 8     @Override  
 9     protected CreationFactory getFactory(Object template) {  
10         return new ModelCreationFactory(((Integer)template).intValue());  
11     }  
12   
13 }

 

我的程序中是这样的：

ps：Palette是一个树形结构，在这个结构中有四种主要的节点类型：PaletteRoot、PaletteGroup、PaletteDrawer、ToolEntry，其中，PaletteRoot、PaletteGroup、PaletteDrawer都继承自PaletteContainer，PaletteContainer和ToolEntry则都继承自PaletteEntry，这是Palette树结构的基类。getPaletteRoot就是要向系统返回PaletteRoot对象。

 1 class EditorDropListener extends TemplateTransferDropTargetListener {
 2         public EditorDropListener() {
 3             this(getGraphicalViewer());
 4         }
 5       
 6         public EditorDropListener(EditPartViewer viewer) {
 7             super(viewer);
 8             // TODO Auto-generated constructor stub
 9         }
10         //GraphicalViewer和EditPartViewer的区别？？用了两个构造函数。查资料说GraphicalViewer 是 EditPartViewer 的子接口，可是为何要两个？？？？？
11         @Override
12         protected CreationFactory getFactory(Object template) {
13             if (template instanceof CreationFactory) {
14                 return ((CreationFactory) template);
15             }
16             return null;
17         }
18 
19     };
  1 public class TestCasePalette {
  2     //首先创建PaletteRoot。
  3     public static PaletteRoot createPalette() {
  4         PaletteRoot palette = new PaletteRoot();
  5         palette.addAll(createCategories(palette));
  6         
  7         return palette;
  8     }
  9     
        //根据PaletteRoot创建categories，在里面创建Drawer（放自己的工具）和Group（连接和选择工具）
 10     public static List<PaletteContainer> createCategories(PaletteRoot root){
 11         List<PaletteContainer> categories = new ArrayList<PaletteContainer>();
 12         
 13         categories.add(createControlGroup(root));

 14         categories.add(createStatementDrawer());
 15         categories.add(createTimerDrawer());
 16         categories.add(createConditionDrawer());
 17         categories.add(createMessageDrawer());
 18         categories.add(createInlineDrawer());
 19         categories.add(createInstanceDrawer());    
 20         categories.add(createCommentDrawer());
 21         
 22         return categories;
 23     }
 24     //在Group里创建entry。SelectionToolEntry用于创建选择工具，MarqueeToolEntry则用于创建区域选择工具。
 25     public static PaletteGroup createControlGroup(PaletteRoot root){        
 26         PaletteGroup toolGroup = new PaletteGroup("tool");
 27         
 28         ToolEntry tool = new SelectionToolEntry();        
 29         toolGroup.add(tool);
 30         root.setDefaultEntry(tool);
 31         tool = new MarqueeToolEntry();
 32         toolGroup.add(tool);        
 33         
 34         return toolGroup;
 35     }
 36     在Drawer里创建entry
 37     public static PaletteDrawer createCommentDrawer(){
 38         PaletteDrawer commentDrawer = new PaletteDrawer("Comment");        
 39         CombinedTemplateCreationEntry  creationTool;
 40         ImageDescriptor image;
 41         
 42         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_EVENTCOMMENT);暂时未深究    
 43         creationTool = new CombinedTemplateCreationEntry(
 44                 "Event Comment","Event Comment",
 45                 new SimpleFactory(EventCommentModel.class),
 46                 image,image);
 47         commentDrawer.add(creationTool);
 48         
 49         return commentDrawer;
 50     }
 51     
 52     public static PaletteDrawer createTimerDrawer(){
 53         PaletteDrawer timerDrawer = new PaletteDrawer("Timer");        
 54         CombinedTemplateCreationEntry  creationTool;
 55         ImageDescriptor image;
 56         
 57         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_STARTTIMER);
 58         creationTool =  new CombinedTemplateCreationEntry(
 59                 "Start Timer","Start Timer",
 60                 new SimpleFactory(StartTimerModel.class),
 61                 image,image);
 62         timerDrawer.add(creationTool);    
 63         
 64         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_STOPTIMER);
 65         creationTool =  new CombinedTemplateCreationEntry(
 66                 "Stop Timer","Stop Timer",
 67                 new SimpleFactory(StopTimerModel.class),
 68                 image,image);
 69         timerDrawer.add(creationTool);    
 70         
 71         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_TIMEOUTTIMER);
 72         creationTool =  new CombinedTemplateCreationEntry(
 73                 "Time out Timer","Time out Timer",
 74                 new SimpleFactory(TimeoutTimerModel.class),
 75                 image,image);
 76         timerDrawer.add(creationTool);    
 77         
 78         return timerDrawer;
 79     }
 80     
 81     public static PaletteDrawer createInstanceDrawer(){
 82         PaletteDrawer instanceDrawer = new PaletteDrawer("Instance");        
 83         CombinedTemplateCreationEntry  creationTool;
 84         ImageDescriptor image;
 85         
 86         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_STOPCOMPONENT);
 87         creationTool = new CombinedTemplateCreationEntry(
 88                 "Stop Component","Stop Component",
 89                 new SimpleFactory(StopComponentModel.class),
 90                 image,image);
 91         instanceDrawer.add(creationTool);
 92         
 93         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_LABEL);
 94         creationTool = new CombinedTemplateCreationEntry(
 95                 "Label","Label",
 96                 new SimpleFactory(LabelModel.class),
 97                 image,image);
 98         instanceDrawer.add(creationTool);
 99         
100         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_PORT);
101         creationTool =  new CombinedTemplateCreationEntry(
102                 "Port Instance","Port Instance",
103                 new SimpleFactory(PortInstanceModel.class),
104                 image,image);
105         instanceDrawer.add(creationTool);
106         
107         return instanceDrawer;
108     }
109     
110     public static PaletteDrawer createStatementDrawer(){
111         PaletteDrawer statementDrawer = new PaletteDrawer("Statement");        
112         CombinedTemplateCreationEntry  creationTool;
113         ImageDescriptor image;
114         
115         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_ACTION);
116         creationTool = new CombinedTemplateCreationEntry(
117                 "Action","Action",
118                 new SimpleFactory(ActionModel.class),
119                 image,image);
120         statementDrawer.add(creationTool);
121         
122         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_CREATE);
123         creationTool = new CombinedTemplateCreationEntry(
124                 "Create","Create",
125                 new SimpleFactory(CreateModel.class),
126                 image,image);
127         statementDrawer.add(creationTool);
128         
129         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_DEFAULT);
130         creationTool = new CombinedTemplateCreationEntry(
131                 "Default","Default",
132                 new SimpleFactory(DefaultModel.class),
133                 image,image);
134         statementDrawer.add(creationTool);
135         
136         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_EXECUTE);
137         creationTool = new CombinedTemplateCreationEntry(
138                 "Execute","Execute",
139                 new SimpleFactory(ExecuteModel.class),
140                 image,image);
141         statementDrawer.add(creationTool);
142         
143         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_REFERENCE);
144         creationTool = new CombinedTemplateCreationEntry(
145                 "Reference","Reference",
146                 new SimpleFactory(ReferenceModel.class),
147                 image,image);
148         statementDrawer.add(creationTool);
149         
150         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_START);
151         creationTool = new CombinedTemplateCreationEntry(
152                 "Start","Start",
153                 new SimpleFactory(StartModel.class),
154                 image,image);
155         statementDrawer.add(creationTool);
156         
157         return statementDrawer;
158     }    
159     
160     public static PaletteDrawer createConditionDrawer(){
161         PaletteDrawer conditionDrawer = new PaletteDrawer("Condition");        
162         CombinedTemplateCreationEntry  creationTool;    
163         ImageDescriptor image;
164         
165         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_VERDICTCONDITION);
166         creationTool = new CombinedTemplateCreationEntry(
167                 "Setverdict","Setverdict",
168                 new SimpleFactory(ConditionModel.class),
169                 image,image);
170         conditionDrawer.add(creationTool);
171         
172         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_DONECONDITION);
173         creationTool = new CombinedTemplateCreationEntry(
174                 "Done Condition","Done Condition",
175                 new SimpleFactory(DoneConditionModel.class),
176                 image,image);
177         conditionDrawer.add(creationTool);
178         
179         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_BOOLEANCONDITION);
180         creationTool = new CombinedTemplateCreationEntry(
181                 "Boolean Condition","Boolean Condition",
182                 new SimpleFactory(BooleanConditionModel.class),
183                 image,image);
184         conditionDrawer.add(creationTool);
185         
186         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_PORTOPERATION);
187         creationTool = new CombinedTemplateCreationEntry(
188                 "Port Operation","Port Operation",
189                 new SimpleFactory(PortOperationModel.class),
190                 image,image);
191         conditionDrawer.add(creationTool);        
192         
193         return conditionDrawer;
194     }    
195     
196     public static PaletteDrawer createMessageDrawer(){
197         PaletteDrawer messageDrawer = new PaletteDrawer("Message");
198         CombinedTemplateCreationEntry creationTool;
199         ImageDescriptor image;
200         
201         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_MESSAGETO);
202         creationTool =  new CombinedTemplateCreationEntry(
203                 "Message To","Message To",
204                 new SimpleFactory(MessageToModel.class),
205                 image,image);
206         messageDrawer.add(creationTool);    
207         
208         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_MESSAGEFROM);
209         creationTool =  new CombinedTemplateCreationEntry(
210                 "Message From","Message From",
211                 new SimpleFactory(MessageFromModel.class),
212                 image,image);
213         messageDrawer.add(creationTool);
214         
215         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_MESSAGECHECK);
216         creationTool =  new CombinedTemplateCreationEntry(
217                 "Check Message","Check Message",
218                 new SimpleFactory(MessageCheckModel.class),
219                 image,image);
220         messageDrawer.add(creationTool);
221         
222         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_FOUND);
223         creationTool =  new CombinedTemplateCreationEntry(
224                 "Found","Found",
225                 new SimpleFactory(FoundModel.class),
226                 image,image);
227         messageDrawer.add(creationTool);
228         
229         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_FOUNDCHECK);
230         creationTool =  new CombinedTemplateCreationEntry(
231                 "Check Found","Check Found",
232                 new SimpleFactory(FoundCheckModel.class),
233                 image,image);
234         messageDrawer.add(creationTool);
235         
236         return messageDrawer;
237     }
238     
239     public static PaletteDrawer createInlineDrawer(){
240         PaletteDrawer inlineDrawer = new PaletteDrawer("Inline");
241         CombinedTemplateCreationEntry creationTool;
242         ImageDescriptor image;
243         
244         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_ALT);
245         creationTool = new CombinedTemplateCreationEntry(
246                 "Alt","Alt",
247                 DiagramFactory.getAlternativeModelFactory(),
248                 image,image);
249         inlineDrawer.add(creationTool);
250         
251         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_CALL);
252         creationTool = new CombinedTemplateCreationEntry(
253                 "Call","Call",
254                 DiagramFactory.getCallReplyModelFactory(),
255                 image,image);
256         inlineDrawer.add(creationTool);
257         
258         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_INTERLEAVE);
259         creationTool = new CombinedTemplateCreationEntry(
260                 "Interleave","Interleave",
261                 DiagramFactory.getInterleaveModelFactory(),
262                 image,image);
263         inlineDrawer.add(creationTool);
264         
265         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_IF);
266         creationTool = new CombinedTemplateCreationEntry(
267                 "If","If",
268                 DiagramFactory.getIfModelFactory(),
269                 image,image);
270         inlineDrawer.add(creationTool);    
271                 
272         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_WHILE);
273         creationTool = new CombinedTemplateCreationEntry(
274                 "While","While",
275                 DiagramFactory.getWhileLoopModelFactory(),
276                 image,image);
277         inlineDrawer.add(creationTool);
278         
279         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_FOR);
280         creationTool = new CombinedTemplateCreationEntry(
281                 "For","For",
282                 DiagramFactory.getForLoopModelFactory(),
283                 image,image);
284         inlineDrawer.add(creationTool);
285                 
286         return inlineDrawer;
287     }    
288 }
  1 public class ControlPalette {
  2     
  3     public static PaletteRoot createPalette() {
  4         PaletteRoot palette = new PaletteRoot();
  5         palette.addAll(createCategories(palette));
  6         
  7         return palette;
  8     }
  9     
 10     public static List<PaletteContainer> createCategories(PaletteRoot root){
 11         List<PaletteContainer> categories = new ArrayList<PaletteContainer>();
 12         
 13         categories.add(createControlGroup(root));
 14         categories.add(createStatementDrawer());
 15         categories.add(createTimerDrawer());
 16         categories.add(createInlineDrawer());    
 17         categories.add(createCommentDrawer());
 18         
 19         return categories;
 20     }
 21     
 22     public static PaletteGroup createControlGroup(PaletteRoot root){        
 23         PaletteGroup toolGroup = new PaletteGroup("tool");
 24         
 25         ToolEntry tool = new SelectionToolEntry();        
 26         toolGroup.add(tool);
 27         root.setDefaultEntry(tool);
 28         tool = new MarqueeToolEntry();
 29         toolGroup.add(tool);
 30         
 31         return toolGroup;
 32     }
 33     
 34     public static PaletteDrawer createCommentDrawer(){
 35         PaletteDrawer commentDrawer = new PaletteDrawer("Comment");        
 36         CombinedTemplateCreationEntry  creationTool;
 37         ImageDescriptor image;
 38         
 39         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_EVENTCOMMENT);        
 40         creationTool = new CombinedTemplateCreationEntry(
 41                 "Event Comment","Event Comment",
 42                 new SimpleFactory(EventCommentModel.class),
 43                 image,image);
 44         commentDrawer.add(creationTool);
 45         
 46         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_TEXT);
 47         creationTool = new CombinedTemplateCreationEntry(
 48                 "Text","Text",
 49                 new SimpleFactory(TextModel.class),
 50                 image,image);
 51         commentDrawer.add(creationTool);
 52         
 53         return commentDrawer;
 54     }
 55     
 56     public static PaletteDrawer createTimerDrawer(){
 57         PaletteDrawer timerDrawer = new PaletteDrawer("Timer");        
 58         CombinedTemplateCreationEntry  creationTool;
 59         ImageDescriptor image;
 60     
 61         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_STARTTIMER);
 62         creationTool =  new CombinedTemplateCreationEntry(
 63                 "Start Timer","Start Timer",
 64                 new SimpleFactory(StartTimerModel.class),
 65                 image,image);
 66         timerDrawer.add(creationTool);    
 67         
 68         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_STOPTIMER);
 69         creationTool =  new CombinedTemplateCreationEntry(
 70                 "Stop Timer","Stop Timer",
 71                 new SimpleFactory(StopTimerModel.class),
 72                 image,image);
 73         timerDrawer.add(creationTool);    
 74         
 75         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_TIMEOUTTIMER);
 76         creationTool =  new CombinedTemplateCreationEntry(
 77                 "Time out Timer","Time out Timer",
 78                 new SimpleFactory(TimeoutTimerModel.class),
 79                 image,image);
 80         timerDrawer.add(creationTool);    
 81         
 82         return timerDrawer;
 83     }
 84     
 85     public static PaletteDrawer createStatementDrawer(){
 86         PaletteDrawer statementDrawer = new PaletteDrawer("Statement");        
 87         CombinedTemplateCreationEntry  creationTool;
 88         ImageDescriptor image;
 89         
 90         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_ACTION);
 91         creationTool = new CombinedTemplateCreationEntry(
 92                 "Action","Action",
 93                 new SimpleFactory(ActionModel.class),
 94                 image,image);
 95         statementDrawer.add(creationTool);
 96         
 97         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_EXECUTE);
 98         creationTool = new CombinedTemplateCreationEntry(
 99                 "Execute","Execute",
100                 new SimpleFactory(ExecuteModel.class),
101                 image,image);
102         statementDrawer.add(creationTool);
103         
104         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_REFERENCE);
105         creationTool = new CombinedTemplateCreationEntry(
106                 "Reference","Reference",
107                 new SimpleFactory(ReferenceModel.class),
108                 image,image);
109         statementDrawer.add(creationTool);
110         
111         return statementDrawer;
112     }    
113     
114     public static PaletteDrawer createInlineDrawer(){
115         PaletteDrawer inlineDrawer = new PaletteDrawer("Inline");
116         CombinedTemplateCreationEntry creationTool;
117         ImageDescriptor image;
118         
119         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_ALT);
120         creationTool = new CombinedTemplateCreationEntry(
121                 "Alt","Alt",
122                 DiagramFactory.getAlternativeModelFactory(),
123                 image,image);
124         inlineDrawer.add(creationTool);
125         
126         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_INTERLEAVE);
127         creationTool = new CombinedTemplateCreationEntry(
128                 "Interleave","Interleave",
129                 DiagramFactory.getInterleaveModelFactory(),
130                 image,image);
131         inlineDrawer.add(creationTool);
132         
133         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_IF);
134         creationTool = new CombinedTemplateCreationEntry(
135                 "If","If",
136                 DiagramFactory.getIfModelFactory(),
137                 image,image);
138         inlineDrawer.add(creationTool);    
139         
140         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_WHILE);
141         creationTool = new CombinedTemplateCreationEntry(
142                 "While","While",
143                 DiagramFactory.getWhileLoopModelFactory(),
144                 image,image);
145         inlineDrawer.add(creationTool);
146         
147         image = AbstractUIPlugin.imageDescriptorFromPlugin(Application.PLUGIN_ID, IImageKey.IIMAGE_FOR);
148         creationTool = new CombinedTemplateCreationEntry(
149                 "For","For",
150                 DiagramFactory.getForLoopModelFactory(),
151                 image,image);
152         inlineDrawer.add(creationTool);
153                 
154         return inlineDrawer;
155     }    
156 }
1 public class FunctionPalette {
2 
3     public static PaletteRoot createPalette() {        
4         return TestCasePalette.createPalette();
5     }    
6     
7 }
public class AltstepPalette {
    
    public static PaletteRoot createPalette() {        
        return TestCasePalette.createPalette();
    }
    
    
}
  1 public class DiagramFactory {
  2 
  3     public static CreationFactory getAlternativeModelFactory() {
  4         return new CreationFactory(){
  5             public Object getNewObject(){
                    //将模型对应到一个int上。
  6                 AlternativeModel alt = new AlternativeModel();
  7                 ContainerSeperatorModel seperator;
  8                 int cell = alt.getPreferredCell();  cell=3
  9                 
 10                 for(int i=1;i<cell;i++){
 11                     seperator = new ContainerSeperatorModel();
 12                     alt.addChild(-1, seperator);  ???                  
 13                 }
 14                 return alt;
 15             }
 16             public Object getObjectType(){
 17                 return "AlternativeModel.class";
 18             }
 19         };
 20     }
 21     
 22     public static CreationFactory getCallReplyModelFactory() {
 23         return new CreationFactory(){
 24             public Object getNewObject(){
 25                 CallReplyModel callreply = new CallReplyModel();
 26                 ContainerSeperatorModel seperator;
 27                 SuspensionRegionModel suspension;
 28                 int cell = callreply.getPreferredCell();
 29                 
 30                 MessageToModel call = new MessageToModel();
 31                 callreply.addChild(-1, call);
 32                 callreply.setCall(call);
 33                 suspension = new SuspensionRegionModel();
 34                 callreply.addChild(-1, suspension);
 35                 suspension.setCall(call);
 36                 suspension.setHeadSuspension(true);
 37                 call.setSuspension(suspension);
 38                 
 39                 for(int i=1;i<cell;i++){
 40                     seperator = new ContainerSeperatorModel();
 41                     callreply.addChild(-1, seperator);                    
 42                     
 43                     suspension = new SuspensionRegionModel();
 44                     callreply.addChild(-1, suspension);
 45                 }
 46                 return callreply;
 47             }
 48             public Object getObjectType(){
 49                 return "CallReplyModel.class";
 50             }
 51         };
 52     }
 53     
 54     public static CreationFactory getIfModelFactory() {
 55         return new CreationFactory(){
 56             public Object getNewObject(){
 57                 IfModel ifm = new IfModel();
 58                 ContainerSeperatorModel seperator;
 59                 int cell =  ifm.getPreferredCell();
 60                 
 61                 for(int i=1;i<cell;i++){
 62                     seperator = new ContainerSeperatorModel();
 63                     ifm.addChild(-1, seperator);                    
 64                 }
 65                 return ifm;
 66             }
 67             public Object getObjectType(){
 68                 return "IfModel.class";
 69             }
 70         };
 71     }
 72     
 73     public static CreationFactory getWhileLoopModelFactory() {
 74         return new CreationFactory(){
 75             public Object getNewObject(){
 76                 WhileLoopModel loop = new WhileLoopModel();
 77                 ContainerSeperatorModel seperator;
 78                 int cell =  loop.getPreferredCell();
 79                 
 80                 for(int i=1;i<cell;i++){
 81                     seperator = new ContainerSeperatorModel();
 82                     loop.addChild(-1, seperator);
 83                 }
 84                 return loop;
 85             }
 86             public Object getObjectType(){
 87                 return "WhileLoopModel.class";
 88             }
 89         };
 90     }
 91     
 92     public static CreationFactory getForLoopModelFactory(){
 93         return new CreationFactory(){
 94             public Object getNewObject(){
 95                 ForLoopModel loop = new ForLoopModel();
 96                 ContainerSeperatorModel seperator;
 97                 int cell =  loop.getPreferredCell();
 98                 
 99                 for(int i=1;i<cell;i++){
100                     seperator = new ContainerSeperatorModel();
101                     loop.addChild(-1, seperator);
102                 }
103                 return loop;
104             }
105             public Object getObjectType(){
106                 return "ForLoopModel.class";
107             }
108         };
109     }
110     
111     public static CreationFactory getInterleaveModelFactory() {
112         return new CreationFactory(){
113             public Object getNewObject(){
114                 InterleaveModel interleave = new InterleaveModel();
115                 ContainerSeperatorModel seperator;
116                 int cell =  interleave.getPreferredCell();
117                 
118                 for(int i=1;i<cell;i++){
119                     seperator = new ContainerSeperatorModel();
120                     interleave.addChild(-1, seperator);
121                 }
122                 return interleave ;
123             }
124             public Object getObjectType(){
125                 return "InterleaveModel.class";
126             }
127         };
128     }
129     
130     
131     
132 }
protected void initializeGraphicalViewer() {
        // TODO Auto-generated method stub

        viewer.setContents(diagram);

        resourceChangeListener = new ResourceChangeListener(this);
        ResourcesPlugin.getWorkspace().addResourceChangeListener(
                resourceChangeListener);

        editorListener = new EditorPartListener(this);
        getSite().getWorkbenchWindow().getPartService().addPartListener(
                editorListener);

        viewer.addDropTargetListener(new EditorDropListener());

    }

最后的成果是：

图片对应的是ControlPalette。

问题：

DiagramFactory那里没看懂。还有什么时候需要用到这个？simpleFactory是啥。


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