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1
12
13 package org.eclipse.ant.internal.ui.antsupport.inputhandler;
14
15 import java.util.Iterator  ;
16
17 import org.apache.tools.ant.BuildException;
18 import org.apache.tools.ant.input.DefaultInputHandler;
19 import org.apache.tools.ant.input.InputRequest;
20 import org.apache.tools.ant.input.MultipleChoiceInputRequest;
21 import org.eclipse.ant.internal.ui.antsupport.RemoteAntMessages;
22 import org.eclipse.swt.SWT;
23 import org.eclipse.swt.events.ModifyEvent;
24 import org.eclipse.swt.events.ModifyListener;
25 import org.eclipse.swt.events.SelectionAdapter;
26 import org.eclipse.swt.events.SelectionEvent;
27 import org.eclipse.swt.graphics.FontMetrics;
28 import org.eclipse.swt.graphics.GC;
29 import org.eclipse.swt.graphics.Point;
30 import org.eclipse.swt.layout.GridData;
31 import org.eclipse.swt.layout.GridLayout;
32 import org.eclipse.swt.widgets.Button;
33 import org.eclipse.swt.widgets.Combo;
34 import org.eclipse.swt.widgets.Composite;
35 import org.eclipse.swt.widgets.Control;
36 import org.eclipse.swt.widgets.Display;
37 import org.eclipse.swt.widgets.Event;
38 import org.eclipse.swt.widgets.Label;
39 import org.eclipse.swt.widgets.Listener;
40 import org.eclipse.swt.widgets.Shell;
41 import org.eclipse.swt.widgets.Text;
42
43 public class SWTInputHandler extends DefaultInputHandler {
44
45 private Text fText;
46 private Combo fCombo;
47 private Text fErrorMessageText;
48 private Button fOkButton;
49 private Shell fDialog;
50 private FontMetrics fFontMetrics;
51 protected InputRequest fRequest;
52 private boolean fFirstValidation= true;
53
54
57 public void handleInput(InputRequest request) throws BuildException {
58 if (System.getProperty("eclipse.ant.noInput") != null) { throw new BuildException(RemoteAntMessages.getString("SWTInputHandler.0")); }
61 fFirstValidation= true;
62 fRequest= request;
63 BuildException[] problem= new BuildException[1];
64 Runnable runnable= getHandleInputRunnable(problem);
65 Display.getDefault().syncExec(runnable);
66 if (problem[0] != null) {
67 throw problem[0];
68 }
69 }
70
71 protected Runnable getHandleInputRunnable(final BuildException[] problem) {
72 return new Runnable () {
73 public void run() {
74 String prompt;
75 if (fRequest instanceof MultipleChoiceInputRequest) {
76 prompt = fRequest.getPrompt();
77 } else {
78 prompt = getPrompt(fRequest);
79 }
80 String title= RemoteAntMessages.getString("SWTInputHandler.1"); boolean[] result = new boolean[1];
82 open(title, prompt, result);
83
84 if (!result[0]) {
85 problem[0]= new BuildException(RemoteAntMessages.getString("SWTInputHandler.2")); }
87 }
88 };
89 }
90
91 protected void open(String title, String prompt, boolean[] result) {
92 createDialog(title, prompt, result);
93 validateInput();
94 fDialog.open();
95
96 while (!fDialog.isDisposed()) {
97 if (!fDialog.getDisplay().readAndDispatch()) fDialog.getDisplay().sleep();
98 }
99 Display.getDefault().dispose();
100 }
101
102 private void createDialog(String title, String prompt, boolean[] result) {
103 Display display= Display.getDefault();
104 fDialog = new Shell(display, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL | SWT.RESIZE);
105 initializeDialogUnits(fDialog);
106 fDialog.setLayout(new GridLayout());
107
108 GridData gd= new GridData(SWT.FILL);
109 gd.horizontalSpan= 2;
110 fDialog.setLayoutData(gd);
111 fDialog.setText(title);
112 Label label= new Label(fDialog, SWT.WRAP);
113 label.setText(prompt);
114 GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER);
115
116 data.widthHint = convertHorizontalDLUsToPixels(300); label.setLayoutData(data);
118 label.setFont(fDialog.getFont());
119
120 if (fRequest instanceof MultipleChoiceInputRequest) {
121 fCombo = new Combo(fDialog, SWT.BORDER | SWT.READ_ONLY);
122 fCombo.add(""); for (Iterator i = ((MultipleChoiceInputRequest)fRequest).getChoices().iterator();i.hasNext();) {
124 fCombo.add((String )i.next());
125 fCombo.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL| GridData.HORIZONTAL_ALIGN_FILL));
126 fCombo.addSelectionListener(new SelectionAdapter() {
127 public void widgetSelected(SelectionEvent e) {
128 validateInput();
129 }
130 });
131 }
132 } else {
133 fText = new Text(fDialog, SWT.SINGLE | SWT.BORDER);
134 fText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL| GridData.HORIZONTAL_ALIGN_FILL));
135 fText.addModifyListener(new ModifyListener() {
136 public void modifyText(ModifyEvent e) {
137 validateInput();
138 }
139 });
140 }
141
142 String value = null;
143 try {
144 fRequest.getClass().getMethod("getDefaultValue", new Class [0]); value = fRequest.getDefaultValue();
146 } catch (SecurityException e) {
147 } catch (NoSuchMethodException e) {
148 }
150
151 fErrorMessageText = new Text(fDialog, SWT.READ_ONLY);
152 fErrorMessageText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
153 fErrorMessageText.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
154
155 createButtonBar(fDialog, result);
156
157 if (value != null) {
158 if (fCombo != null) {
159 fCombo.select(fCombo.indexOf(value));
160 } else {
161 fText.setText(value);
162 fText.selectAll();
163 }
164 }
165 fDialog.pack();
166 }
167
168 protected void setErrorMessage(String errorMessage) {
169 fErrorMessageText.setText(errorMessage == null ? "" : errorMessage); fOkButton.setEnabled(errorMessage == null);
171 fErrorMessageText.getParent().update();
172 }
173
174 protected void validateInput() {
175 String errorMessage = null;
176 if (fRequest instanceof MultipleChoiceInputRequest) {
177 fRequest.setInput(fCombo.getText());
178 } else {
179 fRequest.setInput(fText.getText());
180 }
181 if (!fRequest.isInputValid()) {
182 if (fFirstValidation) {
183 errorMessage= ""; fFirstValidation= false;
185 } else {
186 errorMessage= RemoteAntMessages.getString("SWTInputHandler.3"); }
188 }
189
190 setErrorMessage(errorMessage);
191 }
192
193 protected Control createButtonBar(Composite parent, boolean[] result) {
194 Composite composite = new Composite(parent, SWT.NONE);
195 GridLayout layout = new GridLayout();
196 layout.numColumns = 2;
197 layout.makeColumnsEqualWidth = true;
198 composite.setLayout(layout);
199 GridData data = new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.VERTICAL_ALIGN_CENTER);
200 composite.setLayoutData(data);
201 composite.setFont(parent.getFont());
202
203 createButtonsForButtonBar(composite, result);
204 return composite;
205 }
206
207 protected void createButtonsForButtonBar(Composite parent, final boolean[] result) {
208 fOkButton = new Button(parent, SWT.PUSH);
209 fOkButton.setText(RemoteAntMessages.getString("SWTInputHandler.4")); setButtonLayoutData(fOkButton);
211
212 Button cancel = new Button(parent, SWT.PUSH);
213 cancel.setText(RemoteAntMessages.getString("SWTInputHandler.5")); Listener listener = new Listener() {
215 public void handleEvent(Event event) {
216 result[0] = event.widget == fOkButton;
217 fDialog.close();
218 }
219 };
220 setButtonLayoutData(cancel);
221 fOkButton.addListener(SWT.Selection, listener);
222 fDialog.setDefaultButton(fOkButton);
223 cancel.addListener(SWT.Selection, listener);
224 if (fRequest instanceof MultipleChoiceInputRequest) {
226 fCombo.setFocus();
227 } else {
228 fText.setFocus();
229 }
230 }
231
232 private void setButtonLayoutData(Button button) {
233 GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
234 int widthHint = convertHorizontalDLUsToPixels(61); Point minSize = button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
236 data.widthHint = Math.max(widthHint, minSize.x);
237 button.setLayoutData(data);
238 }
239
240 private int convertHorizontalDLUsToPixels(int dlus) {
241 return (fFontMetrics.getAverageCharWidth() * dlus + 4 / 2) / 4;
243 }
244
245 protected void initializeDialogUnits(Control control) {
246 GC gc = new GC(control);
248 gc.setFont(control.getFont());
249 fFontMetrics = gc.getFontMetrics();
250 gc.dispose();
251 }
252 } |
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