Source Code Cross Referenced for ViewRTest.java in  » Apache-Harmony-Java-SE » javax-package » javax » swing » text » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » javax package » javax.swing.text 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:        /**
018:         * @author Alexey A. Ivanov
019:         * @version $Revision$
020:         */package javax.swing.text;
021:
022:        import java.awt.Container;
023:        import java.awt.Rectangle;
024:        import java.awt.Shape;
025:        import java.util.ArrayList;
026:        import java.util.List;
027:        import javax.swing.BasicSwingTestCase;
028:        import javax.swing.JTextArea;
029:        import javax.swing.event.DocumentEvent;
030:        import javax.swing.event.DocumentListener;
031:        import javax.swing.text.ViewTest.DisAbstractedView;
032:
033:        public class ViewRTest extends BasicSwingTestCase implements 
034:                DocumentListener {
035:            private static class Factory implements  ViewFactory {
036:                public View create(Element element) {
037:                    final String name = element.getName();
038:                    if (AbstractDocument.SectionElementName.equals(name)) {
039:                        return new BoxView(element, View.Y_AXIS) {
040:                            @Override
041:                            protected void forwardUpdateToView(View view,
042:                                    DocumentEvent event, Shape shape,
043:                                    ViewFactory factory) {
044:                                viewsForwardedTo.add(view);
045:                                super .forwardUpdateToView(view, event, shape,
046:                                        factory);
047:                            }
048:                        };
049:                    }
050:                    if (AbstractDocument.ParagraphElementName.equals(name)) {
051:                        return new ParagraphView(element);
052:                    }
053:                    if (AbstractDocument.ContentElementName.equals(name)) {
054:                        return new LabelView(element);
055:                    }
056:                    throw new Error("Unexpected element name: " + name);
057:                }
058:            }
059:
060:            private Document doc;
061:
062:            private Element root;
063:
064:            private View view;
065:
066:            private DocumentEvent event;
067:
068:            private static final ViewFactory factory = new Factory();
069:
070:            private static final Shape shape = new Rectangle(5, 7, 452, 217);
071:
072:            private static final List<View> viewsForwardedTo = new ArrayList<View>();
073:
074:            @Override
075:            protected void setUp() throws Exception {
076:                super .setUp();
077:                doc = new DefaultStyledDocument();
078:                root = doc.getDefaultRootElement();
079:            }
080:
081:            /**
082:             * Tests the case where a mutation occured on element boundaries, so that
083:             * both paragraphs changed but the section where these paragraphs lie
084:             * is not changed.
085:             * In this case the update must be forwarded to these both paragraphs.
086:             * <p>
087:             * In more detail, the document structure for this test is like this:
088:             * <pre>
089:             * section
090:             * |
091:             * +--paragraph
092:             * |  +--content [0, 5; plain]
093:             * |  +--content [5, 12; italic\n]
094:             * |
095:             * +--paragraph
096:             *    +--content [12, 13; \n]   // represents implied new line char
097:             * </pre>
098:             * Then an unattributed text, which doesn't contain the new line char,
099:             * is inserted at <code>doc.getLength()</code>.
100:             * This insert causes the element structure to be rebuild, however
101:             * no changes occur to the section element.
102:             * <p>Thus <code>change</code> parameter to
103:             * <code>forwardUpdate</code> will be <code>null</code>.
104:             */
105:            public void testInsertUpdate01() throws BadLocationException {
106:                MutableAttributeSet italic = new SimpleAttributeSet();
107:                StyleConstants.setItalic(italic, true);
108:                // Init the document structure
109:                doc.insertString(doc.getLength(), "plain", null);
110:                doc.insertString(doc.getLength(), "italic\n", italic);
111:                // Init the view hierarchy
112:                view = factory.create(root);
113:                ((CompositeView) view).loadChildren(factory);
114:                doc.addDocumentListener(this );
115:                // Perform the change tested against
116:                doc.insertString(doc.getLength(), "second", null);
117:                // Both paragraph elements will be modified,
118:                // but the section will not
119:                assertNotNull(event.getChange(root.getElement(0)));
120:                assertNotNull(event.getChange(root.getElement(1)));
121:                assertNull(event.getChange(root));
122:                viewsForwardedTo.clear();
123:                assertEquals(2, view.getViewCount());
124:                view.insertUpdate(event, shape, factory);
125:                assertEquals(2, view.getViewCount());
126:                assertEquals(2, viewsForwardedTo.size());
127:                assertSame(view.getView(0), viewsForwardedTo.get(0));
128:                assertSame(view.getView(1), viewsForwardedTo.get(1));
129:                viewsForwardedTo.clear();
130:            }
131:
132:            /**
133:             * Tests the case where a mutation occured on element boundaries, so that
134:             * both the existing paragraph needs to rebuild its elements and a new
135:             * paragraph is created. Because of the latter, the section is modified
136:             * too.
137:             * In this case the view must create a new child to represent the new
138:             * paragrap as well as notify the previous paragraph so that it updates
139:             * itself.
140:             * <p>
141:             * In more detail, the document structure for this test is like this:
142:             * <pre>
143:             * section
144:             * |
145:             * +--paragraph
146:             * |  +--content [0, 5; plain]
147:             * |  +--content [5, 12; italic\n]
148:             * |
149:             * +--paragraph
150:             *    +--content [12, 19; second ]
151:             *    +--content [19, 31; italic again]
152:             *    +--content [31, 32; \n]   // represents implied new line char
153:             * </pre>
154:             * Then an unattributed text, which contains the new line char,
155:             * is inserted at <code>doc.getLength()</code>.
156:             * This insert causes the element structure to be rebuild:
157:             * <ol>
158:             *     <li>The second paragraph re-creates its last element.
159:             *         This element is mapped to the inserted text.</li>
160:             *     <li>The new paragraph is created, which will contain the
161:             *         implied new line char.<li>
162:             * </ol>
163:             * <p>Thus <code>change</code> parameter to
164:             * <code>forwardUpdate</code> will be not <code>null</code>.
165:             */
166:            public void testInsertUpdate02() throws BadLocationException {
167:                MutableAttributeSet italic = new SimpleAttributeSet();
168:                StyleConstants.setItalic(italic, true);
169:                // Init the document structure
170:                doc.insertString(doc.getLength(), "plain", null);
171:                doc.insertString(doc.getLength(), "italic\n", italic);
172:                doc.insertString(doc.getLength(), "second ", null);
173:                doc.insertString(doc.getLength(), "italic again", italic);
174:                // Init the view hierarchy
175:                view = factory.create(root);
176:                ((CompositeView) view).loadChildren(factory);
177:                doc.addDocumentListener(this );
178:                // Perform the change tested against
179:                doc.insertString(doc.getLength(), " & plain again\n", null);
180:                // Both paragraph elements will be modified,
181:                // but the section will not
182:                assertNotNull(event.getChange(root.getElement(1)));
183:                assertNull(event.getChange(root.getElement(2)));
184:                assertNotNull(event.getChange(root));
185:                viewsForwardedTo.clear();
186:                assertEquals(2, view.getViewCount());
187:                view.insertUpdate(event, shape, factory);
188:                assertEquals(3, view.getViewCount());
189:                assertEquals(1, viewsForwardedTo.size());
190:                assertSame(view.getView(1), viewsForwardedTo.get(0));
191:                viewsForwardedTo.clear();
192:            }
193:
194:            public void testUpdateLayout() throws Exception {
195:                doc = new PlainDocument();
196:                root = doc.getDefaultRootElement();
197:                doc.insertString(0, "1\n\n\n\n", null);
198:                doc.addDocumentListener(this );
199:                doc.insertString(3, "\n2", null);
200:                final Marker marker = new Marker();
201:                final JTextArea area = new JTextArea(doc) {
202:                    private static final long serialVersionUID = 1L;
203:
204:                    @Override
205:                    public void repaint() {
206:                        marker.setOccurred();
207:                    }
208:                };
209:                view = new DisAbstractedView(root) {
210:                    @Override
211:                    public Container getContainer() {
212:                        return area;
213:                    }
214:                };
215:                assertEquals(0, view.getViewCount());
216:                assertNull(view.getParent());
217:                marker.reset();
218:                assertNotNull(event.getChange(root));
219:                view.updateLayout(event.getChange(root), event, shape);
220:                assertTrue(marker.isOccurred());
221:                marker.reset();
222:                view.updateLayout(null, event, shape);
223:                assertFalse(marker.isOccurred());
224:            }
225:
226:            public void insertUpdate(DocumentEvent e) {
227:                event = e;
228:            }
229:
230:            public void removeUpdate(DocumentEvent e) {
231:            }
232:
233:            public void changedUpdate(DocumentEvent e) {
234:            }
235:        }
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