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1
8 package com.nightlabs.editor2d.editpolicy.tree;
9
10 import java.util.List  ;
11
12 import org.eclipse.draw2d.geometry.Dimension;
13 import org.eclipse.draw2d.geometry.Rectangle;
14 import org.eclipse.gef.EditPart;
15 import org.eclipse.gef.commands.Command;
16 import org.eclipse.gef.commands.CompoundCommand;
17 import org.eclipse.gef.commands.UnexecutableCommand;
18 import org.eclipse.gef.editpolicies.TreeContainerEditPolicy;
19 import org.eclipse.gef.requests.ChangeBoundsRequest;
20 import org.eclipse.gef.requests.CreateRequest;
21
22 import com.nightlabs.editor2d.DrawComponent;
23 import com.nightlabs.editor2d.DrawComponentContainer;
24 import com.nightlabs.editor2d.EditorPlugin;
25 import com.nightlabs.editor2d.command.CreateDrawComponentCommand;
26 import com.nightlabs.editor2d.command.DrawComponentReorderCommand;
27 import com.nightlabs.editor2d.util.J2DUtil;
28
29
30 public class DrawComponentTreeContainerEditPolicy
31 extends TreeContainerEditPolicy
32 {
33 protected Command createCreateCommand(DrawComponent child, Rectangle r, int index, String label)
34 {
35 CreateDrawComponentCommand cmd = new CreateDrawComponentCommand();
36 Rectangle rect;
37 if(r == null) {
38 rect = new Rectangle();
39 rect.setSize(new Dimension(-1,-1));
40 }
41 else {
42 rect = r;
43 }
44 cmd.setLocation(rect);
45 cmd.setParent((DrawComponentContainer)getHost().getModel());
46 cmd.setChild(child);
47 cmd.setLabel(label);
48 if(index >= 0)
49 cmd.setIndex(index);
50 return cmd;
51 }
52
53 protected Command getAddCommand(ChangeBoundsRequest request)
54 {
55 CompoundCommand command = new CompoundCommand();
56 command.setDebugLabel("Add in DrawComponentTreeContainerEditPolicy"); List editparts = request.getEditParts();
58 int index = findIndexOfTreeItemAt(request.getLocation());
59
60 for(int i = 0; i < editparts.size(); i++)
61 {
62 EditPart child = (EditPart)editparts.get(i);
63 if(isAncestor(child,getHost()))
64 command.add(UnexecutableCommand.INSTANCE);
65 else {
66 DrawComponent childModel = (DrawComponent)child.getModel();
67 command.add(createCreateCommand(
68 childModel,
69 new Rectangle(
70 new org.eclipse.draw2d.geometry.Point(childModel.getX(), childModel.getY()),
71 new Dimension(childModel.getWidth(), childModel.getHeight())
72 ),
73 index, "Reparent DrawComponent")); }
75 }
76 return command;
77 }
78
79 protected Command getCreateCommand(CreateRequest request)
80 {
81 DrawComponent child = (DrawComponent)request.getNewObject();
82 int index = findIndexOfTreeItemAt(request.getLocation());
83 Rectangle bounds = J2DUtil.toDraw2D(child.getBounds());
85 return createCreateCommand(child, bounds, index, EditorPlugin.getResourceString("command_create_drawcomponent")); }
87
88 protected Command getMoveChildrenCommand(ChangeBoundsRequest request)
89 {
90 CompoundCommand command = new CompoundCommand();
91 List editparts = request.getEditParts();
92 List children = getHost().getChildren();
93 int newIndex = findIndexOfTreeItemAt(request.getLocation());
94
95 for(int i = 0; i < editparts.size(); i++)
96 {
97 EditPart child = (EditPart)editparts.get(i);
98 int tempIndex = newIndex;
99 int oldIndex = children.indexOf(child);
100 if(oldIndex == tempIndex || oldIndex + 1 == tempIndex) {
101 command.add(UnexecutableCommand.INSTANCE);
102 return command;
103 } else if(oldIndex <= tempIndex) {
104 tempIndex--;
105 }
106 command.add(new DrawComponentReorderCommand(
107 (DrawComponent)child.getModel(),
108 (DrawComponentContainer)getHost().getModel(),
109 tempIndex));
110 }
111 return command;
112 }
113
114 protected boolean isAncestor(EditPart source, EditPart target)
115 {
116 if(source == target)
117 return true;
118 if(target.getParent() != null)
119 return isAncestor(source, target.getParent());
120 return false;
121 }
122
123 }
124 |
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