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1
8 package com.nightlabs.editor2d.actions;
9
10 import java.util.ArrayList  ;
11 import java.util.Collections ;
12 import java.util.List ;
13
14 import org.eclipse.draw2d.PositionConstants;
15 import org.eclipse.draw2d.geometry.PrecisionRectangle;
16 import org.eclipse.draw2d.geometry.Rectangle;
17 import org.eclipse.gef.EditPart;
18 import org.eclipse.gef.GraphicalEditPart;
19 import org.eclipse.gef.Request;
20 import org.eclipse.gef.RequestConstants;
21 import org.eclipse.gef.commands.Command;
22 import org.eclipse.gef.commands.CompoundCommand;
23 import org.eclipse.gef.internal.GEFMessages;
24 import org.eclipse.gef.internal.InternalImages;
25 import org.eclipse.gef.requests.AlignmentRequest;
26 import org.eclipse.gef.tools.ToolUtilities;
27 import org.eclipse.gef.ui.actions.GEFActionConstants;
28 import org.eclipse.gef.ui.actions.SelectionAction;
29 import org.eclipse.ui.IEditorPart;
30 import org.eclipse.ui.IWorkbenchPart;
31
32
33 public class EditorAlignmentAction
34 extends SelectionAction
35 {
36
37
40 public static final String ID_ALIGN_BOTTOM = GEFActionConstants.ALIGN_BOTTOM;
41
42
45 public static final String ID_ALIGN_CENTER = GEFActionConstants.ALIGN_CENTER;
46
47
50 public static final String ID_ALIGN_LEFT = GEFActionConstants.ALIGN_LEFT;
51
52
55 public static final String ID_ALIGN_MIDDLE = GEFActionConstants.ALIGN_MIDDLE;
56
57
60 public static final String ID_ALIGN_RIGHT = GEFActionConstants.ALIGN_RIGHT;
61
62
65 public static final String ID_ALIGN_TOP = GEFActionConstants.ALIGN_TOP;
66
67 protected int alignment;
68 protected List operationSet;
69
70
84 public EditorAlignmentAction(IWorkbenchPart part, int align) {
85 super(part);
86 alignment = align;
87 initUI();
88 }
89
90
95 protected Rectangle calculateAlignmentRectangle(Request request) {
96 List editparts = getOperationSet(request);
97 if (editparts == null || editparts.isEmpty())
98 return null;
99 GraphicalEditPart part = (GraphicalEditPart)editparts.get(editparts.size() - 1);
100 Rectangle rect = new PrecisionRectangle(part.getFigure().getBounds());
101 part.getFigure().translateToAbsolute(rect);
102 return rect;
103 }
104
105
108 protected boolean calculateEnabled() {
109 operationSet = null;
110 Command cmd = createAlignmentCommand();
111 if (cmd == null)
112 return false;
113 return cmd.canExecute();
114 }
115
116 private Command createAlignmentCommand() {
117 AlignmentRequest request = new AlignmentRequest(RequestConstants.REQ_ALIGN);
118 request.setAlignmentRectangle(calculateAlignmentRectangle(request));
119 request.setAlignment(alignment);
120 List editparts = getOperationSet(request);
121 if (editparts.size() < 2)
122 return null;
123
124 CompoundCommand command = new CompoundCommand();
125 command.setDebugLabel(getText());
126 for (int i = 0; i < editparts.size(); i++) {
127 EditPart editpart = (EditPart)editparts.get(i);
128 command.add(editpart.getCommand(request));
129 }
130 return command;
131 }
132
133
136 public void dispose() {
137 operationSet = Collections.EMPTY_LIST;
138 super.dispose();
139 }
140
141
146 protected List getOperationSet(Request request) {
147 if (operationSet != null)
148 return operationSet;
149 List editparts = new ArrayList (getSelectedObjects());
150 if (editparts.isEmpty() || !(editparts.get(0) instanceof GraphicalEditPart))
151 return Collections.EMPTY_LIST;
152 Object primary = editparts.get(editparts.size() - 1);
153 editparts = ToolUtilities.getSelectionWithoutDependants(editparts);
154 ToolUtilities.filterEditPartsUnderstanding(editparts, request);
155 if (editparts.size() < 2 || !editparts.contains(primary))
156 return Collections.EMPTY_LIST;
157 EditPart parent = ((EditPart)editparts.get(0)).getParent();
158 for (int i = 1; i < editparts.size(); i++) {
159 EditPart part = (EditPart)editparts.get(i);
160 if (part.getParent() != parent)
161 return Collections.EMPTY_LIST;
162 }
163 return editparts;
164 }
165
166
169 protected void initUI() {
170 switch (alignment) {
171 case PositionConstants.LEFT:
172 setId(GEFActionConstants.ALIGN_LEFT);
173 setText(GEFMessages.AlignLeftAction_Label);
174 setToolTipText(GEFMessages.AlignLeftAction_Tooltip);
175 setImageDescriptor(InternalImages.DESC_HORZ_ALIGN_LEFT);
176 setDisabledImageDescriptor(InternalImages.DESC_HORZ_ALIGN_LEFT_DIS);
177 break;
178
179 case PositionConstants.RIGHT:
180 setId(GEFActionConstants.ALIGN_RIGHT);
181 setText(GEFMessages.AlignRightAction_Label);
182 setToolTipText(GEFMessages.AlignRightAction_Tooltip);
183 setImageDescriptor(InternalImages.DESC_HORZ_ALIGN_RIGHT);
184 setDisabledImageDescriptor(InternalImages.DESC_HORZ_ALIGN_RIGHT_DIS);
185 break;
186
187 case PositionConstants.TOP:
188 setId(GEFActionConstants.ALIGN_TOP);
189 setText(GEFMessages.AlignTopAction_Label);
190 setToolTipText(GEFMessages.AlignTopAction_Tooltip);
191 setImageDescriptor(InternalImages.DESC_VERT_ALIGN_TOP);
192 setDisabledImageDescriptor(InternalImages.DESC_VERT_ALIGN_TOP_DIS);
193 break;
194
195 case PositionConstants.BOTTOM:
196 setId(GEFActionConstants.ALIGN_BOTTOM);
197 setText(GEFMessages.AlignBottomAction_Label);
198 setToolTipText(GEFMessages.AlignBottomAction_Tooltip);
199 setImageDescriptor(InternalImages.DESC_VERT_ALIGN_BOTTOM);
200 setDisabledImageDescriptor(InternalImages.DESC_VERT_ALIGN_BOTTOM_DIS);
201 break;
202
203 case PositionConstants.CENTER:
204 setId(GEFActionConstants.ALIGN_CENTER);
205 setText(GEFMessages.AlignCenterAction_Label);
206 setToolTipText(GEFMessages.AlignCenterAction_Tooltip);
207 setImageDescriptor(InternalImages.DESC_HORZ_ALIGN_CENTER);
208 setDisabledImageDescriptor(InternalImages.DESC_HORZ_ALIGN_CENTER_DIS);
209 break;
210
211 case PositionConstants.MIDDLE:
212 setId(GEFActionConstants.ALIGN_MIDDLE);
213 setText(GEFMessages.AlignMiddleAction_Label);
214 setToolTipText(GEFMessages.AlignMiddleAction_Tooltip);
215 setImageDescriptor(InternalImages.DESC_VERT_ALIGN_MIDDLE);
216 setDisabledImageDescriptor(InternalImages.DESC_VERT_ALIGN_MIDDLE_DIS);
217 break;
218 }
219 }
220
221
224 public void run() {
225 operationSet = null;
226 execute(createAlignmentCommand());
227 }
228
229 } |
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