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package org.kuali.student.lum.common.client.lo; |
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|
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import java.util.ArrayList; |
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import java.util.List; |
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|
21 | |
import com.google.gwt.event.dom.client.ChangeHandler; |
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|
23 | |
public |
24 | 0 | class OutlineNodeModel<T> { |
25 | 0 | private ArrayList<OutlineNode<T>> outlineNodeList = new ArrayList<OutlineNode<T>>(); |
26 | |
|
27 | 0 | private final ArrayList<ChangeHandler> changeHandlerList = new ArrayList<ChangeHandler>(); |
28 | |
|
29 | |
private OutlineNode<T> currentNode; |
30 | |
|
31 | |
public void clearNodes(){ |
32 | 0 | outlineNodeList = new ArrayList<OutlineNode<T>>(); |
33 | 0 | } |
34 | |
public void setCurrentNode(OutlineNode<T> aNode) { |
35 | 0 | currentNode = aNode; |
36 | 0 | } |
37 | |
|
38 | |
public void addChangeHandler(ChangeHandler ch) { |
39 | 0 | changeHandlerList.add(ch); |
40 | 0 | } |
41 | |
|
42 | |
private void fireChangeEvents() { |
43 | 0 | for (ChangeHandler ch : changeHandlerList) { |
44 | 0 | ch.onChange(null); |
45 | |
} |
46 | 0 | } |
47 | |
|
48 | |
public void moveUpCurrent() { |
49 | 0 | if (this.isMoveUpable() == false) { |
50 | 0 | return; |
51 | |
} |
52 | 0 | List<OutlineNode<T>> siblingList = getSiblingList(); |
53 | 0 | int indexInSibling = siblingList.indexOf(currentNode); |
54 | 0 | OutlineNode<T> nextNodeInSibling = siblingList.get(indexInSibling - 1); |
55 | |
|
56 | 0 | List<OutlineNode<T>> childList = getChildList(currentNode); |
57 | 0 | childList.add(0, currentNode); |
58 | 0 | for (int i = 0; i < childList.size(); i++) { |
59 | 0 | OutlineNode<T> aNode = childList.get(i); |
60 | 0 | outlineNodeList.remove(aNode); |
61 | |
} |
62 | |
|
63 | 0 | int moveToIndex = outlineNodeList.indexOf(nextNodeInSibling); |
64 | |
|
65 | 0 | for (int i = 0; i < childList.size(); i++) { |
66 | 0 | OutlineNode<T> aNode = childList.get(i); |
67 | 0 | outlineNodeList.add(moveToIndex + i, aNode); |
68 | |
} |
69 | 0 | fireChangeEvents(); |
70 | 0 | } |
71 | |
public void moveDownCurrent() { |
72 | 0 | if (this.isMoveDownable() == false) { |
73 | 0 | return; |
74 | |
} |
75 | 0 | int index = outlineNodeList.indexOf(currentNode); |
76 | 0 | if (index == -1 || index == outlineNodeList.size() - 1) { |
77 | 0 | return; |
78 | |
} |
79 | 0 | List<OutlineNode<T>> siblingList = getSiblingList(); |
80 | 0 | int indexInSibling = siblingList.indexOf(currentNode); |
81 | 0 | OutlineNode<T> nextNodeInSibling = siblingList.get(indexInSibling + 1); |
82 | |
|
83 | 0 | List<OutlineNode<T>> childList = getChildList(currentNode); |
84 | 0 | childList.add(0, currentNode); |
85 | 0 | for (int i = 0; i < childList.size(); i++) { |
86 | 0 | OutlineNode<T> aNode = childList.get(i); |
87 | 0 | outlineNodeList.remove(aNode); |
88 | |
} |
89 | |
|
90 | 0 | List<OutlineNode<T>> nextNodeChildList = getChildList(nextNodeInSibling); |
91 | 0 | int moveToIndex = -1; |
92 | 0 | if(nextNodeChildList.size() != 0){ |
93 | 0 | moveToIndex = outlineNodeList.indexOf(nextNodeChildList.get(nextNodeChildList.size()-1)); |
94 | |
}else{ |
95 | 0 | moveToIndex =outlineNodeList.indexOf(nextNodeInSibling); |
96 | |
} |
97 | |
|
98 | 0 | for (int i = 0; i < childList.size(); i++) { |
99 | 0 | OutlineNode<T> aNode = childList.get(i); |
100 | 0 | outlineNodeList.add(moveToIndex + 1 + i, aNode); |
101 | |
} |
102 | |
|
103 | 0 | fireChangeEvents(); |
104 | 0 | } |
105 | |
|
106 | |
public void indentCurrent() { |
107 | 0 | if (this.isIndentable()) { |
108 | 0 | currentNode.indent(); |
109 | 0 | fireChangeEvents(); |
110 | |
} |
111 | 0 | } |
112 | |
|
113 | |
public void outdentCurrent() { |
114 | 0 | if (this.isOutdentable()) { |
115 | 0 | List<OutlineNode<T>> childList = getChildList(currentNode); |
116 | 0 | childList.add(0, currentNode); |
117 | 0 | for(OutlineNode<T> aNode:childList){ |
118 | 0 | aNode.outdent(); |
119 | |
} |
120 | 0 | fireChangeEvents(); |
121 | |
} |
122 | 0 | } |
123 | |
|
124 | |
public void deleteCurrent() { |
125 | 0 | if (this.isDeletable()) { |
126 | 0 | List<OutlineNode<T>> childList = getChildList(currentNode); |
127 | 0 | childList.add(0, currentNode); |
128 | 0 | for (int i = 0; i < childList.size(); i++) { |
129 | 0 | OutlineNode<T> aNode = childList.get(i); |
130 | 0 | outlineNodeList.remove(aNode); |
131 | |
} |
132 | 0 | fireChangeEvents(); |
133 | |
} |
134 | 0 | } |
135 | |
|
136 | |
public void addPeer() { |
137 | 0 | int index = outlineNodeList.indexOf(currentNode); |
138 | 0 | OutlineNode<T> aNode = new OutlineNode<T>(); |
139 | |
|
140 | 0 | aNode.setIndentLevel(currentNode.getIndentLevel()); |
141 | 0 | outlineNodeList.add(index + 1, aNode); |
142 | 0 | fireChangeEvents(); |
143 | 0 | } |
144 | |
|
145 | |
public void addChild() { |
146 | 0 | int index = outlineNodeList.indexOf(currentNode); |
147 | 0 | OutlineNode<T> aNode = new OutlineNode<T>(); |
148 | |
|
149 | 0 | aNode.setIndentLevel(currentNode.getIndentLevel() + 1); |
150 | 0 | outlineNodeList.add(index + 1, aNode); |
151 | 0 | fireChangeEvents(); |
152 | 0 | } |
153 | |
|
154 | |
public void addOutlineNode(OutlineNode<T> aNode) { |
155 | 0 | outlineNodeList.add(aNode); |
156 | 0 | } |
157 | |
|
158 | |
@SuppressWarnings("unchecked") |
159 | |
public OutlineNode<T>[] toOutlineNodes() { |
160 | 0 | return outlineNodeList.toArray(new OutlineNode[outlineNodeList.size()]); |
161 | |
} |
162 | |
|
163 | |
public List<OutlineNode<T>> getOutlineNodes() { |
164 | 0 | return outlineNodeList; |
165 | |
} |
166 | |
|
167 | |
public List<OutlineNode<T>> getChildList(OutlineNode<T> aNode) { |
168 | 0 | int index = outlineNodeList.indexOf(aNode); |
169 | 0 | List<OutlineNode<T>> childList = new ArrayList<OutlineNode<T>>(); |
170 | 0 | for (int i = index + 1; i < outlineNodeList.size(); i++) { |
171 | 0 | if (outlineNodeList.get(i).getIndentLevel() > aNode.getIndentLevel()) { |
172 | 0 | childList.add(outlineNodeList.get(i)); |
173 | |
} else { |
174 | |
break; |
175 | |
} |
176 | |
} |
177 | 0 | return childList; |
178 | |
} |
179 | |
|
180 | |
public List<OutlineNode<T>> getSiblingList() { |
181 | 0 | List<OutlineNode<T>> siblingList = new ArrayList<OutlineNode<T>>(); |
182 | 0 | int index = outlineNodeList.indexOf(currentNode); |
183 | |
|
184 | 0 | if (currentNode.getIndentLevel() == 0) { |
185 | 0 | for (int i = 0; i < outlineNodeList.size(); i++) { |
186 | 0 | if (outlineNodeList.get(i).getIndentLevel() == 0) { |
187 | 0 | siblingList.add(outlineNodeList.get(i)); |
188 | |
} |
189 | |
} |
190 | 0 | return siblingList; |
191 | |
} |
192 | |
|
193 | |
|
194 | 0 | OutlineNode<T> parentNode = null; |
195 | 0 | for (int i = index - 1; i >= 0; i--) { |
196 | 0 | if (outlineNodeList.get(i).getIndentLevel() - currentNode.getIndentLevel() == -1) { |
197 | 0 | parentNode = outlineNodeList.get(i); |
198 | 0 | break; |
199 | |
} |
200 | |
} |
201 | 0 | int parentIndex = outlineNodeList.indexOf(parentNode); |
202 | 0 | for (int i = parentIndex + 1; i < outlineNodeList.size(); i++) { |
203 | 0 | if (outlineNodeList.get(i).getIndentLevel() - parentNode.getIndentLevel() == 1) { |
204 | 0 | siblingList.add(outlineNodeList.get(i)); |
205 | 0 | } else if (outlineNodeList.get(i).getIndentLevel() == parentNode.getIndentLevel()) { |
206 | 0 | break; |
207 | |
} |
208 | |
} |
209 | 0 | return siblingList; |
210 | |
} |
211 | |
|
212 | |
public boolean isIndentable() { |
213 | 0 | int index = outlineNodeList.indexOf(currentNode); |
214 | 0 | if (index == 0) { |
215 | 0 | return false; |
216 | |
} |
217 | |
|
218 | |
|
219 | 0 | List<OutlineNode<T>> siblingList = getSiblingList(); |
220 | 0 | if (siblingList.size() == 1) { |
221 | 0 | return false; |
222 | |
} |
223 | |
|
224 | 0 | int indexInSiblings = siblingList.indexOf(currentNode); |
225 | 0 | if(indexInSiblings == 0){ |
226 | 0 | return false; |
227 | |
} |
228 | |
|
229 | 0 | return true; |
230 | |
} |
231 | |
|
232 | |
public boolean isOutdentable() { |
233 | 0 | if (currentNode.getIndentLevel() == 0) { |
234 | 0 | return false; |
235 | |
} |
236 | 0 | return true; |
237 | |
} |
238 | |
|
239 | |
public boolean isMoveUpable() { |
240 | 0 | List<OutlineNode<T>> list = getSiblingList(); |
241 | 0 | if (list.size() == 1) { |
242 | 0 | return false; |
243 | |
} |
244 | 0 | int index = list.indexOf(currentNode); |
245 | 0 | if (index == 0) { |
246 | 0 | return false; |
247 | |
} |
248 | 0 | return true; |
249 | |
} |
250 | |
|
251 | |
public boolean isMoveDownable() { |
252 | 0 | List<OutlineNode<T>> list = getSiblingList(); |
253 | 0 | if (list.size() == 0) { |
254 | 0 | return false; |
255 | |
} |
256 | 0 | int index = list.indexOf(currentNode); |
257 | 0 | if (index == list.size() - 1) { |
258 | 0 | return false; |
259 | |
} |
260 | 0 | return true; |
261 | |
} |
262 | |
|
263 | |
public boolean isDeletable() { |
264 | 0 | if(outlineNodeList.size() == 1){ |
265 | 0 | return false; |
266 | |
} |
267 | 0 | return true; |
268 | |
} |
269 | |
} |