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1
12 package org.eclipse.jdt.internal.ui.viewsupport;
13
14 import java.util.HashMap  ;
15 import java.util.Iterator ;
16 import java.util.List ;
17
18 import org.eclipse.core.runtime.IStatus;
19
20 import org.eclipse.swt.SWT;
21 import org.eclipse.swt.graphics.Image;
22 import org.eclipse.swt.layout.GridData;
23 import org.eclipse.swt.widgets.Composite;
24 import org.eclipse.swt.widgets.Control;
25
26 import org.eclipse.jface.action.Action;
27 import org.eclipse.jface.action.IAction;
28 import org.eclipse.jface.dialogs.StatusDialog;
29 import org.eclipse.jface.resource.ImageDescriptor;
30 import org.eclipse.jface.viewers.ISelection;
31 import org.eclipse.jface.viewers.LabelProvider;
32 import org.eclipse.jface.viewers.StructuredSelection;
33 import org.eclipse.jface.window.Window;
34
35 import org.eclipse.jdt.internal.corext.util.Messages;
36
37 import org.eclipse.jdt.internal.ui.JavaUIMessages;
38 import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
39 import org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField;
40 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
41 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IListAdapter;
42 import org.eclipse.jdt.internal.ui.wizards.dialogfields.LayoutUtil;
43 import org.eclipse.jdt.internal.ui.wizards.dialogfields.ListDialogField;
44 import org.eclipse.jdt.internal.ui.wizards.dialogfields.Separator;
45 import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringDialogField;
46
47 class HistoryListAction extends Action {
48
49 private class HistoryListDialog extends StatusDialog {
50 private static final int MAX_MAX_ENTRIES= 100;
51 private ListDialogField fHistoryList;
52 private StringDialogField fMaxEntriesField;
53 private int fMaxEntries;
54
55 private Object fResult;
56
57 private HistoryListDialog() {
58 super(fHistory.getShell());
59 setTitle(fHistory.getHistoryListDialogTitle());
60
61 createHistoryList();
62 createMaxEntriesField();
63 setHelpAvailable(false);
64 }
65
66 private void createHistoryList() {
67 IListAdapter adapter= new IListAdapter() {
68 public void customButtonPressed(ListDialogField field, int index) {
69 doCustomButtonPressed(index);
70 }
71 public void selectionChanged(ListDialogField field) {
72 doSelectionChanged();
73 }
74
75 public void doubleClicked(ListDialogField field) {
76 doDoubleClicked();
77 }
78 };
79 String [] buttonLabels= new String [] { JavaUIMessages.HistoryListAction_remove, JavaUIMessages.HistoryListAction_remove_all };
80 LabelProvider labelProvider= new TestRunLabelProvider();
81 fHistoryList= new ListDialogField(adapter, buttonLabels, labelProvider);
82 fHistoryList.setLabelText(fHistory.getHistoryListDialogMessage());
83
84 List historyEntries= fHistory.getHistoryEntries();
85 fHistoryList.setElements(historyEntries);
86
87 Object currentEntry= fHistory.getCurrentEntry();
88 ISelection sel;
89 if (currentEntry != null) {
90 sel= new StructuredSelection(currentEntry);
91 } else {
92 sel= new StructuredSelection();
93 }
94 fHistoryList.selectElements(sel);
95 }
96
97 private void createMaxEntriesField() {
98 fMaxEntriesField= new StringDialogField();
99 fMaxEntriesField.setLabelText(fHistory.getMaxEntriesMessage());
100 fMaxEntriesField.setDialogFieldListener(new IDialogFieldListener() {
101 public void dialogFieldChanged(DialogField field) {
102 String maxString= fMaxEntriesField.getText();
103 boolean valid;
104 try {
105 fMaxEntries= Integer.parseInt(maxString);
106 valid= fMaxEntries > 0 && fMaxEntries < MAX_MAX_ENTRIES;
107 } catch (NumberFormatException e) {
108 valid= false;
109 }
110 if (valid)
111 updateStatus(StatusInfo.OK_STATUS);
112 else
113 updateStatus(new StatusInfo(IStatus.ERROR, Messages.format(JavaUIMessages.HistoryListAction_max_entries_constraint, Integer.toString(MAX_MAX_ENTRIES))));
114 }
115 });
116 fMaxEntriesField.setText(Integer.toString(fHistory.getMaxEntries()));
117 }
118
119
122 protected Control createDialogArea(Composite parent) {
123 initializeDialogUnits(parent);
124
125 Composite composite= (Composite) super.createDialogArea(parent);
126
127 Composite inner= new Composite(composite, SWT.NONE);
128 inner.setLayoutData(new GridData(GridData.FILL_BOTH));
129 inner.setFont(composite.getFont());
130
131 LayoutUtil.doDefaultLayout(inner, new DialogField[] { fHistoryList, new Separator() }, true);
132 LayoutUtil.setHeightHint(fHistoryList.getListControl(null), convertHeightInCharsToPixels(12));
133 LayoutUtil.setHorizontalGrabbing(fHistoryList.getListControl(null));
134
135 Composite additionalControls= new Composite(inner, SWT.NONE);
136 additionalControls.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
137 LayoutUtil.doDefaultLayout(additionalControls, new DialogField[] { fMaxEntriesField }, false);
138 LayoutUtil.setHorizontalGrabbing(fMaxEntriesField.getTextControl(null));
139
140 applyDialogFont(composite);
141 return composite;
142 }
143
144 private void doCustomButtonPressed(int index) {
145 switch (index) {
146 case 0: fHistoryList.removeElements(fHistoryList.getSelectedElements());
148 fHistoryList.selectFirstElement();
149 break;
150
151 case 1: fHistoryList.removeAllElements();
153
154 default:
155 break;
156 }
157 }
158
159 private void doDoubleClicked() {
160 okPressed();
161 }
162
163 private void doSelectionChanged() {
164 List selected= fHistoryList.getSelectedElements();
165 if (selected.size() >= 1) {
166 fResult= selected.get(0);
167 } else {
168 fResult= null;
169 }
170 fHistoryList.enableButton(0, selected.size() != 0);
171 }
172
173 public Object getResult() {
174 return fResult;
175 }
176
177 public List getRemaining() {
178 return fHistoryList.getElements();
179 }
180
181 public int getMaxEntries() {
182 return fMaxEntries;
183 }
184
185
188 public void create() {
189 setShellStyle(getShellStyle() | SWT.RESIZE);
190 super.create();
191 }
192
193 }
194
195 private final class TestRunLabelProvider extends LabelProvider {
196 private final HashMap fImages= new HashMap ();
197
198 public String getText(Object element) {
199 return fHistory.getText(element);
200 }
201
202 public Image getImage(Object element) {
203 ImageDescriptor imageDescriptor= fHistory.getImageDescriptor(element);
204 return getCachedImage(imageDescriptor);
205 }
206
207 private Image getCachedImage(ImageDescriptor imageDescriptor) {
208 Object cached= fImages.get(imageDescriptor);
209 if (cached != null)
210 return (Image) cached;
211 Image image= imageDescriptor.createImage(fHistory.getShell().getDisplay());
212 fImages.put(imageDescriptor, image);
213 return image;
214 }
215
216 public void dispose() {
217 for (Iterator iter= fImages.values().iterator(); iter.hasNext();) {
218 Image image= (Image) iter.next();
219 image.dispose();
220 }
221 fImages.clear();
222 }
223 }
224
225 private ViewHistory fHistory;
226
227 public HistoryListAction(ViewHistory history) {
228 super(null, IAction.AS_RADIO_BUTTON);
229 fHistory= history;
230 fHistory.configureHistoryListAction(this);
231 }
232
233
236 public void run() {
237 HistoryListDialog dialog= new HistoryListDialog();
238 if (dialog.open() == Window.OK) {
239 fHistory.setHistoryEntries(dialog.getRemaining(), dialog.getResult());
240 fHistory.setMaxEntries(dialog.getMaxEntries());
241 }
242 }
243
244 }
245
246 |
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