Source Code Cross Referenced for MarkFactory.java in  » Swing-Library » abeille-forms-designer » org » netbeans » editor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » org.netbeans.editor 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *                 Sun Public License Notice
003:         * 
004:         * The contents of this file are subject to the Sun Public License
005:         * Version 1.0 (the "License"). You may not use this file except in
006:         * compliance with the License. A copy of the License is available at
007:         * http://www.sun.com/
008:         * 
009:         * The Original Code is NetBeans. The Initial Developer of the Original
010:         * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
011:         * Microsystems, Inc. All Rights Reserved.
012:         */
013:
014:        package org.netbeans.editor;
015:
016:        import java.lang.ref.WeakReference;
017:
018:        /**
019:         * Various marks are located here
020:         * 
021:         * @author Miloslav Metelka
022:         * @version 1.00
023:         */
024:
025:        public class MarkFactory {
026:
027:            private MarkFactory() {
028:                // no instantiation
029:            }
030:
031:            /**
032:             * Syntax mark holds info about scan state of syntax scanner. This helps in
033:             * redraws because reparsing after insert/delete is done only from nearest
034:             * left syntax mark. Moreover rescaning is done only until there are marks
035:             * with different scan state. As soon as mark is found with same parsing
036:             * info as rescanning scanner has, parsing ends.
037:             */
038:            public static class SyntaxMark extends Mark {
039:
040:                /** Syntax mark state info */
041:                private Syntax.StateInfo stateInfo;
042:
043:                private TokenItem tokenItem;
044:
045:                /** Get state info of this mark */
046:                public Syntax.StateInfo getStateInfo() {
047:                    return stateInfo;
048:                }
049:
050:                public void updateStateInfo(Syntax syntax) {
051:                    if (stateInfo == null) {
052:                        stateInfo = syntax.createStateInfo();
053:                    }
054:                    syntax.storeState(stateInfo);
055:                }
056:
057:                void setStateInfo(Syntax.StateInfo stateInfo) {
058:                    this .stateInfo = stateInfo;
059:                }
060:
061:                public TokenItem getTokenItem() {
062:                    return tokenItem;
063:                }
064:
065:                void setTokenItem(TokenItem tokenItem) {
066:                    this .tokenItem = tokenItem;
067:                }
068:
069:                /** When removal occurs */
070:                protected void removeUpdateAction(int pos, int len) {
071:                    try {
072:                        remove();
073:                    } catch (InvalidMarkException e) {
074:                        // shouldn't happen
075:                    }
076:                }
077:
078:            }
079:
080:            /** Mark that can have its position updated by where it's located */
081:            public static class ContextMark extends Mark {
082:
083:                /** Stay at all times at the begining of the line */
084:                boolean stayBOL;
085:
086:                public ContextMark(boolean stayBOL) {
087:                    this (false, stayBOL);
088:                }
089:
090:                public ContextMark(boolean insertAfter, boolean stayBOL) {
091:                    super (insertAfter);
092:                    this .stayBOL = stayBOL;
093:                }
094:
095:            }
096:
097:            /**
098:             * Activation mark for particular layer. When layer is not active its
099:             * updateContext() method is not called.
100:             */
101:            public static class DrawMark extends ContextMark {
102:
103:                /** Activation flag means either activate layer or deactivate it */
104:                protected boolean activateLayer;
105:
106:                /** Reference to draw layer this mark belogns to */
107:                String layerName;
108:
109:                /**
110:                 * Reference to extended UI if this draw mark is info-specific or null
111:                 * if it's document-wide.
112:                 */
113:                WeakReference editorUIRef;
114:
115:                public DrawMark(String layerName, EditorUI editorUI) {
116:                    super (false);
117:                    this .layerName = layerName;
118:                    setEditorUI(editorUI);
119:                }
120:
121:                public boolean isDocumentMark() {
122:                    return (editorUIRef == null);
123:                }
124:
125:                public EditorUI getEditorUI() {
126:                    if (editorUIRef != null) {
127:                        return (EditorUI) editorUIRef.get();
128:                    }
129:                    return null;
130:                }
131:
132:                public void setEditorUI(EditorUI editorUI) {
133:                    this .editorUIRef = (editorUI != null) ? new WeakReference(
134:                            editorUI) : null;
135:                }
136:
137:                public boolean isValidUI() {
138:                    return !(editorUIRef != null && editorUIRef.get() == null);
139:                }
140:
141:                public void setActivateLayer(boolean activateLayer) {
142:                    this .activateLayer = activateLayer;
143:                }
144:
145:                public boolean getActivateLayer() {
146:                    return activateLayer;
147:                }
148:
149:                public boolean removeInvalid() {
150:                    if (!isValidUI()) {
151:                        try {
152:                            this .remove();
153:                        } catch (InvalidMarkException e) {
154:                        }
155:                        return true; // invalid and removed
156:                    }
157:                    return false; // valid
158:                }
159:
160:                public String toString() {
161:                    try {
162:                        return "pos=" + getOffset() + ", line=" + getLine(); // NOI18N
163:                    } catch (InvalidMarkException e) {
164:                        return "mark not valid"; // NOI18N
165:                    }
166:                }
167:
168:            }
169:
170:            /** Support for draw marks chained in double linked list */
171:            public static class ChainDrawMark extends DrawMark {
172:
173:                /** Next mark in chain */
174:                protected ChainDrawMark next;
175:
176:                /** Previous mark in chain */
177:                protected ChainDrawMark prev;
178:
179:                public ChainDrawMark(String layerName, EditorUI editorUI) {
180:                    super (layerName, editorUI);
181:                }
182:
183:                public final ChainDrawMark getNext() {
184:                    return next;
185:                }
186:
187:                public final void setNext(ChainDrawMark mark) {
188:                    next = mark;
189:                }
190:
191:                /** Set next mark in chain */
192:                public void setNextChain(ChainDrawMark mark) {
193:                    this .next = mark;
194:                    if (mark != null) {
195:                        mark.prev = this ;
196:                    }
197:                }
198:
199:                public final ChainDrawMark getPrev() {
200:                    return prev;
201:                }
202:
203:                public final void setPrev(ChainDrawMark mark) {
204:                    prev = mark;
205:                }
206:
207:                /** Set previous mark in chain */
208:                public void setPrevChain(ChainDrawMark mark) {
209:                    this .prev = mark;
210:                    if (mark != null) {
211:                        mark.next = this ;
212:                    }
213:                }
214:
215:                /**
216:                 * Insert mark before this one in chain
217:                 * 
218:                 * @return inserted mark
219:                 */
220:                public ChainDrawMark insertChain(ChainDrawMark mark) {
221:                    ChainDrawMark this Prev = this .prev;
222:                    mark.prev = this Prev;
223:                    mark.next = this ;
224:                    if (this Prev != null) {
225:                        this Prev.next = mark;
226:                    }
227:                    this .prev = mark;
228:                    return mark;
229:                }
230:
231:                /**
232:                 * Remove this mark from the chain
233:                 * 
234:                 * @return next chain member or null for end of chain
235:                 */
236:                public ChainDrawMark removeChain() {
237:                    ChainDrawMark this Next = this .next;
238:                    ChainDrawMark this Prev = this .prev;
239:                    if (this Prev != null) { // not the first
240:                        this Prev.next = this Next;
241:                        this .prev = null;
242:                    }
243:                    if (this Next != null) { // not the last
244:                        this Next.prev = this Prev;
245:                        this .next = null;
246:                    }
247:                    try {
248:                        this .remove(); // remove the mark from DocMarks
249:                    } catch (InvalidMarkException e) {
250:                        // already removed
251:                    }
252:                    return this Next;
253:                }
254:
255:                public String toStringChain() {
256:                    return toString()
257:                            + (next != null ? "\n" + next.toStringChain() : ""); // NOI18N
258:                }
259:
260:                public String toString() {
261:                    return super .toString()
262:                            + ", " // NOI18N
263:                            + ((prev != null) ? ((next != null) ? "chain member" // NOI18N
264:                                    : "last member")
265:                                    : ((next != null) ? "first member" // NOI18N
266:                                            : "standalone member")); // NOI18N
267:                }
268:
269:            }
270:
271:            /**
272:             * Special mark for caret. Its signature is used in Analyzer not to move
273:             * this mark when initial read is performed.
274:             */
275:            static class CaretMark extends DrawMark {
276:
277:                CaretMark() {
278:                    super (DrawLayerFactory.CARET_LAYER_NAME, null);
279:                }
280:
281:            }
282:
283:            /** Mark for creating line elements */
284:            static class LineMark extends Mark {
285:
286:                /** Weak reference to line element */
287:                BaseDocument.LineElement lineElemRef; // non-weak ref due to #17351
288:
289:                public LineMark() {
290:                    super (true);
291:                }
292:
293:            }
294:
295:        }
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