Revision 42177 trunk/org.gvsig.desktop/org.gvsig.desktop.compat.cdc/org.gvsig.fmap.mapcontext/org.gvsig.fmap.mapcontext.api/src/main/java/org/gvsig/fmap/mapcontext/ExtentHistory.java
ExtentHistory.java | ||
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/** |
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* <p> |
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* Number of extents stored. |
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* Number of previous extents stored.
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* </p> |
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* |
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* @see #hasPrevious() |
... | ... | |
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*/ |
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private int num = 0; |
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/** |
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* <p> |
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* Number of next extents stored. |
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* </p> |
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* |
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* @see #hasNext() |
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* @see #putNext(Rectangle2D) |
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* @see #getNext() |
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* @see #removeNext() |
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*/ |
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private int numNext = 0; |
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/** |
... | ... | |
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/** |
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* <p> |
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* Appends the specified extent to the end of this history.
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* Appends the specified extent at the end of the array of previous zooms.
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* </p> |
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* |
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* @param ext the new extent |
... | ... | |
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} |
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} |
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} |
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/** |
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* <p> |
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* Appends the specified extent at the end of the array of next zooms. |
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* </p> |
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* |
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* @param ext the new extent |
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* @see #getNext() |
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* @see #hasNext() |
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*/ |
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public void putNext(Rectangle2D ext) { |
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if ((ext != null) && ((numNext < 1) || (ext != extentsNext[numNext - 1])) ) {
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if ((ext != null) && ((numNext < 1) || (ext != extentsNext[numNext - 1]))) { |
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if (numNext < (NUMREC)) { |
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extentsNext[numNext] = ext; |
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numNext++; |
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} else { |
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} |
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else { |
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for (int i = 0; i < (NUMREC - 1); i++) { |
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extentsNext[i] = extentsNext[i+1];
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extentsNext[i] = extentsNext[i + 1];
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} |
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extentsNext[numNext - 1] = ext; |
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} |
... | ... | |
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/** |
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* <p> |
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* Returns <code>true</code> if there are extents registered. |
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* Returns <code>true</code> if there are previous extents registered.
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* </p> |
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* |
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* @return <code>true</code> if there are extents registered; |
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* @return <code>true</code> if there are previous extents registered;
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* <code>false</code> otherwise |
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* @see #put(Rectangle2D) |
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* @see #removePrev() |
... | ... | |
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return num > 0; |
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} |
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/** |
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* <p> |
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* Returns <code>true</code> if there are next extents registered. |
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* </p> |
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* |
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* @return <code>true</code> if there are next extents registered; |
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* <code>false</code> otherwise |
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* @see #putNext(Rectangle2D) |
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* @see #removeNext() |
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* @see #getNext() |
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*/ |
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public boolean hasNext() { |
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return numNext > 0; |
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} |
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/** |
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* <p> |
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* Returns the last extent in the history. |
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* Returns the last previous extent in the history.
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* </p> |
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* |
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* @return the last extent in the history |
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* @return the last previous extent in the history
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* @see #put(Rectangle2D) |
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* @see #getXMLEntity() |
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*/ |
... | ... | |
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return ext; |
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} |
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/** |
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* <p> |
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* Returns the last next extent in the history. |
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* </p> |
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* |
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* @return the last next extent in the history |
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* @see #putNext(Rectangle2D) |
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* @see #getXMLEntity() |
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*/ |
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public Rectangle2D getNext() { |
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if (numNext <= 0) { |
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return null; |
... | ... | |
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/** |
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* <p> |
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* Extracts (removing) the last extent from the history. |
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* Extracts (removing) the last previous extent from the history.
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* </p> |
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* |
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* @return last extent in the history |
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* @return last previous extent in the history
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* @see #hasPrevious() |
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*/ |
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public Rectangle2D removePrev() { |
... | ... | |
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/** |
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* <p> |
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* Extracts (removing) the last extent from the history. |
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* Extracts (removing) the last next extent from the history.
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* </p> |
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* |
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* @return last extent in the history |
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* @return last next extent in the history
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* @see #hasNext() |
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*/ |
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public Rectangle2D removeNext() { |
... | ... | |
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return ext; |
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} |
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/** |
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* <p> |
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* Sets to zero the number of next extents from the history. |
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* </p> |
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* |
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* @see #getNext() |
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* @see #hasNext() |
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*/ |
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public void clear() { |
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numNext = 0; |
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} |
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