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1
19 package org.openharmonise.workfloweditor;
20
21 import java.awt.geom.*;
22 import java.awt.geom.Point2D.Float;
23 import java.io.*;
24 import java.util.*;
25
26 import javax.xml.parsers.*;
27
28 import org.jaxen.dom.*;
29 import org.openharmonise.commons.xml.*;
30 import org.openharmonise.vfs.context.*;
31 import org.w3c.dom.*;
32
33
34
41 public class WorkflowLayoutStore implements ContextListener {
42
43
46 private static WorkflowLayoutStore m_instance = null;
47
48
51 private HashMap m_workflows = new HashMap();
52
53
56 private WorkflowLayoutStore() {
57 super();
58 ContextHandler.getInstance().addListener(ContextType.CONTEXT_SHUTDOWN, this);
59 this.load();
60 }
61
62
68 public static WorkflowLayoutStore getInstance() {
69 if(m_instance==null) {
70 m_instance = new WorkflowLayoutStore();
71 }
72 return m_instance;
73 }
74
75
83 public void setStageLayout(String  sWorkflowPath, String sStagePath, Point2D.Float point) {
84 HashMap stageMap = (HashMap) this.m_workflows.get(sWorkflowPath);
85 if(stageMap==null) {
86 stageMap = new HashMap();
87 this.m_workflows.put(sWorkflowPath, stageMap);
88 }
89 stageMap.put(sStagePath, point);
90 }
91
92 private void moveGraphsToTopLeft() {
93 Iterator itor = this.m_workflows.values().iterator();
94 while (itor.hasNext()) {
95 float minX = (float) 10000000000.0;
96 float minY = (float) 10000000000.0;
97
98 HashMap stageMap = (HashMap) itor.next();
99 Iterator itor2 = stageMap.keySet().iterator();
100 while (itor2.hasNext()) {
101 String sStagePath = (String ) itor2.next();
102 Point2D.Float point = (Float ) stageMap.get(sStagePath);
103 if(point.x<minX) {
104 minX = point.x;
105 }
106 if(point.y<minY) {
107 minY = point.y;
108 }
109 }
110
111 float diffX = 0;
112 float diffY = 0;
113
114 if(minX>20) {
115 diffX = minX-20;
116 }
117 if(minY>20) {
118 diffY = minY-20;
119 }
120
121 if(diffX>0 || diffY>0) {
122 itor2 = stageMap.keySet().iterator();
123 while (itor2.hasNext()) {
124 String sStagePath = (String ) itor2.next();
125 Point2D.Float point = (Float ) stageMap.get(sStagePath);
126 point.x = point.x - diffX;
127 point.y = point.y - diffY;
128 }
129 }
130 }
131 }
132
133
141 public Point2D.Float getStageLayout(String sWorkflowPath, String sStagePath) {
142 Point2D.Float point = null;
143
144 HashMap stageMap = (HashMap) this.m_workflows.get(sWorkflowPath);
145 if(stageMap!=null) {
146 point = (Float ) stageMap.get(sStagePath);
147 }
148
149 return point;
150 }
151
152
156 private void load() {
157 File fXML = new File("C:\\ContentManager\\layouts.xml");
158 if(fXML.exists()) {
159 try {
160 Document xml =
161 DocumentBuilderFactory
162 .newInstance()
163 .newDocumentBuilder()
164 .parse(
165 new org.xml.sax.InputSource (new FileReader( fXML )));
166
167 DOMXPath xpWorkflows = new DOMXPath("child::workflow");
168 List workflows = xpWorkflows.selectNodes(xml.getDocumentElement());
169 Iterator itor = workflows.iterator();
170 while (itor.hasNext()) {
171 Element elWorkflow = (Element) itor.next();
172 DOMXPath xpStages = new DOMXPath("child::workflowstage");
173 DOMXPath xpPath = new DOMXPath("child::path/.");
174 String sWorkflowPath = xpPath.stringValueOf(elWorkflow);
175 List stages = xpStages.selectNodes(elWorkflow);
176 Iterator itor2 = stages.iterator();
177 while (itor2.hasNext()) {
178 Element elStage = (Element) itor2.next();
179 float x = java.lang.Float.parseFloat( elStage.getAttribute("x") );
180 float y = java.lang.Float.parseFloat( elStage.getAttribute("y") );
181 String sStagePath = xpPath.stringValueOf(elStage);
182 Point2D.Float point = new Point2D.Float(x, y);
183 this.setStageLayout(sWorkflowPath, sStagePath, point);
184 }
185 }
186
187 this.moveGraphsToTopLeft();
188
189 } catch(Exception e) {
190 e.printStackTrace();
191 }
192 }
193 }
194
195
199 private void save() {
200 try {
201 Document xml = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
202
203 Element elRoot = xml.createElement("layouts");
204
205 Iterator itor = this.m_workflows.keySet().iterator();
206 while (itor.hasNext()) {
207 String sWorkflowPath = (String ) itor.next();
208
209 Element elWorkflow = xml.createElement("workflow");
210 elRoot.appendChild(elWorkflow);
211
212 Element elPath = xml.createElement("path");
213 Text txt = xml.createTextNode(sWorkflowPath);
214 elPath.appendChild(txt);
215 elWorkflow.appendChild(elPath);
216 elRoot.appendChild(elWorkflow);
217
218 HashMap stageMap = (HashMap) this.m_workflows.get(sWorkflowPath);
219 Iterator itor2 = stageMap.keySet().iterator();
220 while (itor2.hasNext()) {
221 String sStagePath = (String ) itor2.next();
222 Point2D.Float point = (Float ) stageMap.get(sStagePath);
223 float x = point.x;
224 float y = point.y;
225
226 Element elStage = xml.createElement("workflowstage");
227 elWorkflow.appendChild(elStage);
228 elStage.setAttribute("x", new java.lang.Float (x).toString());
229 elStage.setAttribute("y", new java.lang.Float (y).toString());
230
231
232 elPath = xml.createElement("path");
233 txt = xml.createTextNode(sStagePath);
234 elPath.appendChild(txt);
235 elStage.appendChild(elPath);
236
237 }
238 }
239
240 File fXML = new File("C:\\ContentManager\\layouts.xml");
241 XMLPrettyPrint printer = new XMLPrettyPrint();
242 printer.printNodeToFile(elRoot, fXML);
243
244 } catch (ParserConfigurationException e) {
245 e.printStackTrace();
246 } catch (FactoryConfigurationError e) {
247 e.printStackTrace();
248 }
249 }
250
251
254 public void contextMessage(ContextEvent ce) {
255 if(ce.CONTEXT_TYPE==ContextType.CONTEXT_SHUTDOWN) {
256 this.save();
257 }
258 }
259
260 }
261 |
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