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1
4 package org.hibernate.eclipse.console.wizards;
5
6 import java.util.Iterator  ;
7
8 import org.eclipse.jface.viewers.IStructuredSelection;
9 import org.eclipse.jface.viewers.TableViewer;
10 import org.eclipse.swt.SWT;
11 import org.eclipse.swt.events.SelectionAdapter;
12 import org.eclipse.swt.events.SelectionEvent;
13 import org.eclipse.swt.events.SelectionListener;
14 import org.eclipse.swt.graphics.Font;
15 import org.eclipse.swt.layout.GridData;
16 import org.eclipse.swt.layout.GridLayout;
17 import org.eclipse.swt.widgets.Button;
18 import org.eclipse.swt.widgets.Composite;
19 import org.eclipse.swt.widgets.Group;
20 import org.eclipse.swt.widgets.Label;
21 import org.eclipse.swt.widgets.Shell;
22 import org.eclipse.swt.widgets.Table;
23 import org.eclipse.swt.widgets.TableItem;
24
25
29 public abstract class UpDownList {
30
31 private SelectionListener buttonListener= new SelectionAdapter() {
32 public void widgetSelected(SelectionEvent e) {
33 handleButtonPressed((Button) e.widget);
34 }
35 };
36
37 private Button[] addButton;
38 private Button removeButton;
39 private Button upButton;
40 private Button downButton;
41 private TableViewer tableView;
42 private Shell shell;
43
44 private final Composite parent;
45 private final String title;
46
47 public UpDownList(Composite parent, Shell shell2, String title) {
48 this.parent = parent;
49 this.shell = shell2;
50 this.title = title;
51 build();
52 }
53
54 void build() {
55
56 Font font = parent.getFont();
57
58 Group topLevel = new Group(parent, SWT.NONE);
59 topLevel.setText(title);
60 GridData gd = new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);
61 gd.verticalSpan = 3;
62 gd.horizontalSpan = 3;
63
64 topLevel.setLayoutData(gd);
65 GridLayout layout = new GridLayout();
66
67 layout.marginHeight = 0;
68 layout.marginWidth = 0;
69 layout.numColumns = 3;
70 topLevel.setLayout(layout);
71
72 tableView = new TableViewer(topLevel, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);
74
76 Table builderTable= tableView.getTable();
77 builderTable.setLayoutData(new GridData(GridData.FILL_BOTH));
78 builderTable.setFont(font);
79 builderTable.addSelectionListener(new SelectionAdapter() {
80 public void widgetSelected(SelectionEvent e) {
81 handleTableSelectionChanged();
82 }
83 });
84
85 Composite buttonArea = new Composite(topLevel, SWT.NONE);
87 layout = new GridLayout();
88 layout.marginHeight = 0;
89 layout.marginWidth = 0;
90 buttonArea.setLayout(layout);
91 buttonArea.setFont(font);
92 buttonArea.setLayoutData(new GridData(GridData.FILL_VERTICAL));
93
94 String [] addButtonLabels = getAddButtonLabels();
95 addButton = new Button[addButtonLabels.length];
96 for (int i = 0; i < addButtonLabels.length; i++) {
97 String label = addButtonLabels[i];
98 addButton[i] = createButton(buttonArea, label); addButton[i].setEnabled(true);
100 }
101 removeButton = createButton(buttonArea, "Remove"); new Label(buttonArea, SWT.LEFT);
103 upButton = createButton(buttonArea, "Up"); downButton = createButton(buttonArea, "Down");
105
106
107
108
111 }
112
113 protected String [] getAddButtonLabels() {
114 return new String [] { "Add..." };
115 }
116
117
120 private void handleButtonPressed(Button button) {
121 if (button == removeButton) {
122 handleRemoveButtonPressed(tableView);
123 } else if (button == upButton) {
124 moveSelectionUp(tableView);
125 } else if (button == downButton) {
126 moveSelectionDown(tableView);
127 } else {
128 for (int i = 0; i < addButton.length; i++) {
129 Button but = addButton[i];
130 if(button == but) {
131 handleAddButtonPressed(i);
132 }
133 }
134 }
135 handleTableSelectionChanged();
136 tableView.getTable().setFocus();
137
138 }
139
140 private void moveSelectionDown(TableViewer viewer) {
141 Table table = viewer.getTable();
142 int indices[]= table.getSelectionIndices();
143 if (indices.length < 1) {
144 return;
145 }
146 int newSelection[]= new int[indices.length];
147 int max= table.getItemCount() - 1;
148 for (int i = indices.length - 1; i >= 0; i--) {
149 int index= indices[i];
150 if (index < max) {
151 move (viewer, table.getItem(index), index + 1);
152 newSelection[i]= index + 1;
153 }
154 }
155 table.setSelection(newSelection);
156 }
157
158 private void moveSelectionUp(TableViewer viewer) {
159 Table table = viewer.getTable();
160 int indices[]= table.getSelectionIndices();
161 int newSelection[]= new int[indices.length];
162 for (int i = 0; i < indices.length; i++) {
163 int index= indices[i];
164 if (index > 0) {
165 move (viewer, table.getItem(index), index - 1);
166 newSelection[i]= index - 1;
167 }
168 }
169 table.setSelection(newSelection);
170 }
171
172
175 private void move(TableViewer viewer, TableItem item, int index) {
176 Object data = item.getData();
177 item.dispose();
178 viewer.insert(data, index);
179 }
180
181 private void handleRemoveButtonPressed(TableViewer viewer) {
182 IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
183 if (selection != null) {
184 int numSelected= selection.size();
185
186 Iterator iterator= selection.iterator();
187 while (iterator.hasNext()) {
188 Object item= iterator.next();
189 viewer.remove(item);
190 }
191 listChanged();
192 }
193 }
194
195 private void handleAddButtonPressed(int i) {
196 Object [] o = handleAdd(i);
197 if(o!=null) {
198 add(o,true);
199 }
200 }
201
202 public void add(Object [] o, boolean notify) {
203 tableView.add(o);
204 if (notify) listChanged();
205 }
206
207 abstract protected void listChanged();
208
209 abstract protected Object [] handleAdd(int i);
210
211 protected Shell getShell() {
212 return shell;
213 }
214
215
219 private void handleTableSelectionChanged() {
220 for (int i = 0; i < addButton.length; i++) {
221 addButton[i].setEnabled(true);
222 }
223 Table builderTable= tableView.getTable();
224 TableItem[] items = builderTable.getSelection();
225 boolean validSelection= items != null && items.length > 0;
226 boolean enableEdit= validSelection;
227 boolean enableRemove= validSelection;
228 boolean enableUp= validSelection;
229 boolean enableDown= validSelection;
230 if (validSelection) {
231 int indices[]= builderTable.getSelectionIndices();
232 int max = builderTable.getItemCount();
233 enableUp= indices[0] != 0;
234 enableDown= indices[indices.length - 1] < max - 1;
235 enableRemove = true;
236 }
237 removeButton.setEnabled(enableRemove);
238 upButton.setEnabled(enableUp);
239 downButton.setEnabled(enableDown);
240 }
241
242
245 private Button createButton(Composite parent, String label) {
246 Button button = new Button(parent, SWT.PUSH);
247 GridData data = new GridData();
248 data.horizontalAlignment = GridData.FILL;
251
253 button.setLayoutData(data);
254 button.setFont(parent.getFont());
255 button.setText(label);
256 button.setEnabled(false);
257 button.addSelectionListener(buttonListener);
258 return button;
259 }
260
261 public Table getTable() {
262 return tableView.getTable();
263 }
264
265
266 }
267 |
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