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1 package gnu.kawa.swtviews;
2 import gnu.kawa.models.*;
3 import org.eclipse.swt.widgets.*;
4 import org.eclipse.swt.layout.*;
5 import org.eclipse.swt.SWT;
6 import org.eclipse.swt.events.SelectionEvent;
7
8 public class SwtDisplay extends gnu.kawa.models.Display
9 {
10 org.eclipse.swt.widgets.Display swtDisplay;
11
12 static SwtDisplay instance;
13
14 public SwtDisplay (org.eclipse.swt.widgets.Display swtDisplay)
15 {
16 this.swtDisplay = swtDisplay;
17 }
18
19 public static synchronized gnu.kawa.models.Display getInstance()
20 {
21 if (instance == null)
22 {
23 instance = new SwtDisplay(new org.eclipse.swt.widgets.Display());
24 }
25 return instance;
26 }
27
28 public Window makeWindow ()
29 {
30 SwtWindow window = new SwtWindow(this);
31 window.display = this;
32 return window;
33 }
34
35 public void addBox (Box model, Object  where)
36 {
37 new SwtBox(model, (Composite) where, this);
38 }
39
40 public void addButton (gnu.kawa.models.Button model, Object where)
41 {
42 new SwtButton(model, (Composite) where, this);
43 }
44
45 public void addLabel (gnu.kawa.models.Label model, Object where)
46 {
47 org.eclipse.swt.widgets.Label swtLabel
49 = new org.eclipse.swt.widgets.Label((Composite) where, 0);
50
51 String text = model.getText();
52 if (text != null)
53 swtLabel.setText(text);
54
55 LabelListener listener = new LabelListener(swtLabel, model);
56
57 model.addListener(listener);
58 swtLabel.pack();
59 }
60
61 public void addImage (DrawImage model, Object where)
62 {
63 throw new Error ("SwtDisplay.addImage not implemented!");
64 }
65
66 public void addView (Object view, Object where)
67 {
68 if (! ((Control) view).setParent((Composite) where))
69 throw new Error ("SwtDisplay.addView not implemented!");
70 }
71 }
72
73 class SwtButton
74 implements org.eclipse.swt.events.SelectionListener
76 {
77 org.eclipse.swt.widgets.Button swtButton;
78
79 gnu.kawa.models.Button model;
80
81 public SwtButton (gnu.kawa.models.Button model,
82 Composite parent, SwtDisplay display)
83 {
84 this.model = model;
85
86 swtButton = new org.eclipse.swt.widgets.Button(parent, SWT.PUSH);
87 swtButton.setText(model.getText());
88 swtButton.addSelectionListener(this);
89 swtButton.pack();
90 }
91
92 public void widgetSelected(SelectionEvent e)
93 {
94 try
95 {
96 ((gnu.mapping.Procedure) model.getAction()).apply1(e);
97 }
98 catch (Throwable ex)
99 {
100 throw new gnu.mapping.WrappedException(ex);
101 }
102 }
103
104 public void widgetDefaultSelected (SelectionEvent e)
105 {
106 System.err.println("(widgetDefaultSelected invoked)");
107 }
108 }
109
110
111
112 class LabelListener extends WeakListener
113 {
114 public LabelListener(org.eclipse.swt.widgets.Label swtLabel,
115 gnu.kawa.models.Label model)
116 {
117 super(swtLabel);
118 }
119
120 public void update (Object view, Model model, Object key)
121 {
122 org.eclipse.swt.widgets.Label swtLabel
123 = (org.eclipse.swt.widgets.Label) view;
124 gnu.kawa.models.Label label = (gnu.kawa.models.Label) model;
125 if (key == "text")
126 swtLabel.setText(label.getText());
127 swtLabel.pack(true);
128 }
129 }
130
131 class SwtBox extends Composite
132 {
133 Box model;
134
135 public SwtBox (Box model, Composite parent, gnu.kawa.models.Display display)
136 {
137 super(parent, 0);
138 this.model = model;
139
140 Viewable cellSpacing = model.getCellSpacing();
141 int n = model.getComponentCount();
142 for (int i = 0; i < n; i++)
143 {
144 if (i > 0 && cellSpacing != null)
145 cellSpacing.makeView(display, this);
146 model.getComponent(i).makeView(display, this);
147 }
148
149 GridLayout layout = new GridLayout();
150 if (model.getAxis() == 0)
151 { layout.numColumns = n;
153 }
154 else
155 { layout.numColumns = 1;
157 }
158 layout.horizontalSpacing = layout.verticalSpacing = 0;
159 layout.marginWidth = layout.marginHeight = 0;
160 setLayout(layout);
161 pack();
162 }
163 }
164
165 class SwtWindow implements gnu.kawa.models.Window
166 {
167 org.eclipse.swt.widgets.Shell shell;
168
169 SwtDisplay display;
170
171 public gnu.kawa.models.Display getDisplay () { return display; }
172
173 public SwtWindow (SwtDisplay display)
174 {
175 this.display = display;
176 shell = new Shell(display.swtDisplay, SWT.CLOSE|SWT.BORDER|SWT.RESIZE);
177 }
178
179 public String getTitle ()
180 {
181 return "(unknown title)"; }
183
184 public void setTitle (String title)
185 {
186 }
188
189 public void setMenuBar (Object menubar)
190 {
191 }
193
194 public void setContent (Object content)
195 {
196 if (content instanceof Viewable)
197 ((Viewable) content).makeView(getDisplay(), shell);
198 else
199 new Error ("SwtDisplay.setContent:"+ content).printStackTrace();
200 }
201
202 public void open ()
203 {
204 shell.open();
205 while (!shell.isDisposed ())
206 {
207 if (!display.swtDisplay.readAndDispatch())
208 display.swtDisplay.sleep();
209 }
210 display.swtDisplay.dispose();
211 }
212
213 public void finalize ()
214 {
215 if (shell != null)
216 shell.dispose();
217 }
218 } |
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