Skip to main content
summaryrefslogtreecommitdiffstats
blob: c43689f0ca00b0efef67f6ce15ff46777e076a94 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
package org.eclipse.search.internal.workingsets;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.util.Assert;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.ui.dialogs.SelectionDialog;

import org.eclipse.search.internal.ui.util.ListContentProvider;
import org.eclipse.search.ui.IWorkingSet;

public class WorkingSetSelectionDialog extends SelectionDialog {

	private static class WorkingSetLabelProvider extends LabelProvider {
		public String getText(Object workingSet) {
			Assert.isTrue(workingSet instanceof IWorkingSet);
			return ((IWorkingSet)workingSet).getName();
		}

//		public Image getImage(Object workingSet) {
//			return null;
//		}
	}

	// sizing constants
	private final static int SIZING_SELECTION_WIDGET_HEIGHT= 250;
	private final static int SIZING_SELECTION_WIDGET_WIDTH= 300;

	// Providers for populating this dialog
	private ILabelProvider fLabelProvider;
	private IStructuredContentProvider fContentProvider;

	// The visual selection widget group
	private TableViewer fListViewer;

	// Modify buttons
	private Button fNewButton;
	private Button fDetailsButton;
	private Button fRemoveButton;

	private IWorkingSet fResult;
	
	/**
	 * Creates a working set selection dialog.
	 *
	 * @param parentShell the parent shell
	 */
	public WorkingSetSelectionDialog(Shell parentShell) {
		super(parentShell);
		setTitle("Working Sets"); //$NON-NLS-1$
		fContentProvider= new ListContentProvider();
		fLabelProvider= new WorkingSetLabelProvider();
		setMessage("Select a working set."); //$NON-NLS-1$

	}

	/**
	 * Add the modify buttons to the dialog.
	 */
	private void addModifyButtons(Composite composite) {
	
		Composite buttonComposite= new Composite(composite, SWT.RIGHT);
		GridLayout layout= new GridLayout();
		layout.numColumns= 2;
		buttonComposite.setLayout(layout);
		GridData data =
			new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.GRAB_HORIZONTAL);
		data.grabExcessHorizontalSpace= true;
		composite.setData(data);
	
		int id= IDialogConstants.CLIENT_ID + 1;
		fNewButton= createButton(buttonComposite, id++, "New...", false);
		fNewButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				WorkingSetDialog dlg= new WorkingSetDialog(getShell());
				if (dlg.open() == dlg.OK) {
					fListViewer.add(dlg.getWorkingSet());
					fListViewer.setSelection(new StructuredSelection(dlg.getWorkingSet()), true);
					WorkingSet.add(dlg.getWorkingSet());
				}
			}
		});

		fDetailsButton= createButton(buttonComposite, id++, "Details...", false);
		fDetailsButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				WorkingSetDialog dlg= new WorkingSetDialog(getShell(), getWorkingSet());
				if (dlg.open() == dlg.OK)
					fListViewer.update(dlg.getWorkingSet(), null);
			}
		});
	
		fRemoveButton= createButton(buttonComposite, id++, "Remove", false);
		fRemoveButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				removeSelectedWorkingSets();
			}
		});
	}

	/**
	 * Visually checks the previously-specified elements in this dialog's list 
	 * viewer.
	 */
	private void checkInitialSelections() {
		fListViewer.setSelection(new StructuredSelection(getInitialSelections()), true);
	}

	/* 
	 * Overrides method from Window.
	 */
	protected void configureShell(Shell shell) {
		super.configureShell(shell);
		// XXX: Needs help
//		WorkbenchHelp.setHelp(shell, new Object[] {IHelpContextIds.LIST_SELECTION_DIALOG});
	}
	
	/*
	 * Overrides method from Dialog.
	 */
	protected Control createDialogArea(Composite parent) {
		// page group
		Composite composite= (Composite)super.createDialogArea(parent);
	
		createMessageArea(composite);
	
		fListViewer= new TableViewer(composite, SWT.BORDER | SWT.MULTI);
		GridData data= new GridData(GridData.FILL_BOTH);
		data.heightHint= SIZING_SELECTION_WIDGET_HEIGHT;
		data.widthHint= SIZING_SELECTION_WIDGET_WIDTH;
		fListViewer.getTable().setLayoutData(data);
	
		fListViewer.setLabelProvider(fLabelProvider);
		fListViewer.setContentProvider(fContentProvider);
		
		fListViewer.addSelectionChangedListener(new ISelectionChangedListener() {
			public void selectionChanged(SelectionChangedEvent event) {
				handleSelectionChanged();
			}
		});

		fListViewer.addDoubleClickListener(new IDoubleClickListener() {
			public void doubleClick(DoubleClickEvent event) {
				okPressed();
			}
		});

		addModifyButtons(composite);
		initializeViewer();
		
		return composite;
	}

	protected Control createContents(Composite parent) {
		Control control= super.createContents(parent);
		if (getInitialSelections() != null && !getInitialSelections().isEmpty())
			checkInitialSelections();
		updateButtonAvailability();
		
		return control;
	}

	/**
	 * Initializes this dialog's viewer after it has been laid out.
	 */
	private void initializeViewer() {
		fListViewer.setInput(Arrays.asList(WorkingSet.getWorkingSets()));
	}

	/*
	 * Overrides method from Dialog
	 */
	protected void okPressed() {
		List result= new ArrayList(1);
		fResult= getSelectedWorkingSet();
		if (fResult != null)
			result.add(fResult);
		setResult(result);
		super.okPressed();
	}

	private void handleSelectionChanged() {
		updateButtonAvailability();
		fResult= getSelectedWorkingSet();
	}
	
	private void updateButtonAvailability() {
		ISelection selection= fListViewer.getSelection();
		boolean hasSelection= selection != null && !selection.isEmpty();
		fRemoveButton.setEnabled(hasSelection);
		boolean hasSingleSelection= hasSelection;
		if (hasSelection && selection instanceof IStructuredSelection)
			hasSingleSelection= ((IStructuredSelection)selection).size() == 1;
		fDetailsButton.setEnabled(hasSingleSelection);
		getOkButton().setEnabled(hasSingleSelection);
	}

	private void removeSelectedWorkingSets() {
		List result= new ArrayList(1);
		ISelection selection= fListViewer.getSelection();
		if (selection instanceof  IStructuredSelection) {
			Iterator iter= ((IStructuredSelection)selection).iterator();
			while (iter.hasNext())
				WorkingSet.remove(((IWorkingSet)iter.next()));
			fListViewer.remove(((IStructuredSelection)selection).toArray());
		}
	}

	/**
	 * Returns the selected working set, or <code>null</code> if
	 * the selection was canceled.
	 *
	 * @return the selected <code>IWorkingSet</code> or <code>null</code> if Cancel was pressed
	 */
	public IWorkingSet getWorkingSet() {
		return fResult;
	}


	private IWorkingSet getSelectedWorkingSet() {
		ISelection selection= fListViewer.getSelection();
		if (selection instanceof  IStructuredSelection)
			return (IWorkingSet)((IStructuredSelection)selection).getFirstElement();
		return null;
	}
}

Back to the top