Support re-ordering of slides, now that we know how slider ordering works
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@418612 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch
parent
19894ffa53
commit
9f3cfdce35
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@ -119,6 +119,14 @@ public class Slide extends Sheet
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}
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}
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/**
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* Changes the Slide's (external facing) page number.
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* @see SlideShow.reorderSlide()
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*/
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public void setSlideNumber(int newSlideNumber) {
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_slideNo = newSlideNumber;
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}
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/**
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* Create a <code>TextBox</code> object that represents the slide's title.
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*
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@ -18,6 +18,7 @@
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package org.apache.poi.hslf.record;
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import org.apache.poi.util.ArrayUtil;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.hslf.util.MutableByteArrayOutputStream;
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@ -35,7 +36,7 @@ import java.io.ByteArrayOutputStream;
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public abstract class RecordContainer extends Record
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{
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protected Record[] _children;
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private Boolean addingChildRecordLock = new Boolean(true);
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private Boolean changingChildRecordsLock = new Boolean(true);
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/**
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* Return any children
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@ -47,22 +48,19 @@ public abstract class RecordContainer extends Record
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*/
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public boolean isAnAtom() { return false; }
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/**
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* Add a new child record onto a record's list of children.
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*/
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public void appendChildRecord(Record newChild) {
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synchronized(addingChildRecordLock) {
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addChildAt(newChild, _children.length);
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}
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}
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/* ===============================================================
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* Internal Move Helpers
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* ===============================================================
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*/
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/**
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* Finds the location of the given child record
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*/
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private int findChildLocation(Record child) {
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// Synchronized as we don't want things changing
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// as we're doing our search
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synchronized(addingChildRecordLock) {
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synchronized(changingChildRecordsLock) {
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for(int i=0; i<_children.length; i++) {
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if(_children[i].equals(child)) {
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return i;
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@ -72,6 +70,21 @@ public abstract class RecordContainer extends Record
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return -1;
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}
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/**
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* Adds a child record, at the very end.
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* @param newChild The child record to add
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*/
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private void appendChild(Record newChild) {
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synchronized(changingChildRecordsLock) {
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// Copy over, and pop the child in at the end
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Record[] nc = new Record[(_children.length + 1)];
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System.arraycopy(_children, 0, nc, 0, _children.length);
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// Switch the arrays
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nc[_children.length] = newChild;
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_children = nc;
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}
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}
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/**
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* Adds the given new Child Record at the given location,
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* shuffling everything from there on down by one
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@ -79,30 +92,47 @@ public abstract class RecordContainer extends Record
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* @param position
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*/
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private void addChildAt(Record newChild, int position) {
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synchronized(addingChildRecordLock) {
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Record[] newChildren = new Record[_children.length+1];
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// Move over to the new array, shuffling on by one after
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// the addition point
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for(int i=0; i<_children.length; i++) {
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if(i == position) {
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newChildren[i] = newChild;
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}
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synchronized(changingChildRecordsLock) {
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// Firstly, have the child added in at the end
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appendChild(newChild);
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// Now, have them moved to the right place
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moveChildRecords( (_children.length-1), position, 1 );
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}
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}
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/**
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* Moves <i>number</i> child records from <i>oldLoc</i>
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* to <i>newLoc</i>. Caller must have the changingChildRecordsLock
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* @param oldLoc the current location of the records to move
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* @param newLoc the new location for the records
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* @param number the number of records to move
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*/
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private void moveChildRecords(int oldLoc, int newLoc, int number) {
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if(oldLoc == newLoc) { return; }
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if(number == 0) { return; }
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// Check that we're not asked to move too many
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if(oldLoc+number > _children.length) {
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throw new IllegalArgumentException("Asked to move more records than there are!");
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}
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// Do the move
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ArrayUtil.arrayMoveWithin(_children, oldLoc, newLoc, number);
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}
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/* ===============================================================
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* External Move Methods
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* ===============================================================
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*/
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if(i >= position) {
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newChildren[i+1] = _children[i];
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}
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if(i < position) {
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newChildren[i] = _children[i];
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}
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}
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// Special case - new record goes at the end
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if(position == _children.length) {
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newChildren[position] = newChild;
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}
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// All done, replace our child list
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_children = newChildren;
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/**
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* Add a new child record onto a record's list of children.
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*/
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public void appendChildRecord(Record newChild) {
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synchronized(changingChildRecordsLock) {
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appendChild(newChild);
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}
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}
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@ -112,7 +142,7 @@ public abstract class RecordContainer extends Record
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* @param after
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*/
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public void addChildAfter(Record newChild, Record after) {
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synchronized(addingChildRecordLock) {
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synchronized(changingChildRecordsLock) {
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// Decide where we're going to put it
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int loc = findChildLocation(after);
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if(loc == -1) {
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@ -130,7 +160,7 @@ public abstract class RecordContainer extends Record
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* @param after
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*/
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public void addChildBefore(Record newChild, Record before) {
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synchronized(addingChildRecordLock) {
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synchronized(changingChildRecordsLock) {
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// Decide where we're going to put it
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int loc = findChildLocation(before);
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if(loc == -1) {
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@ -142,6 +172,69 @@ public abstract class RecordContainer extends Record
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}
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}
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/**
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* Moves the given Child Record to before the supplied record
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*/
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public void moveChildBefore(Record child, Record before) {
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moveChildrenBefore(child, 1, before);
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}
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/**
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* Moves the given Child Records to before the supplied record
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*/
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public void moveChildrenBefore(Record firstChild, int number, Record before) {
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if(number < 1) { return; }
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synchronized(changingChildRecordsLock) {
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// Decide where we're going to put them
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int newLoc = findChildLocation(before);
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if(newLoc == -1) {
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throw new IllegalArgumentException("Asked to move children before another record, but that record wasn't one of our children!");
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}
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// Figure out where they are now
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int oldLoc = findChildLocation(firstChild);
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if(oldLoc == -1) {
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throw new IllegalArgumentException("Asked to move a record that wasn't a child!");
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}
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// Actually move
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moveChildRecords(oldLoc, newLoc, number);
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}
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}
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/**
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* Moves the given Child Records to after the supplied record
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*/
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public void moveChildrenAfter(Record firstChild, int number, Record after) {
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if(number < 1) { return; }
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synchronized(changingChildRecordsLock) {
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// Decide where we're going to put them
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int newLoc = findChildLocation(after);
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if(newLoc == -1) {
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throw new IllegalArgumentException("Asked to move children before another record, but that record wasn't one of our children!");
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}
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// We actually want after this though
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newLoc++;
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// Figure out where they are now
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int oldLoc = findChildLocation(firstChild);
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if(oldLoc == -1) {
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throw new IllegalArgumentException("Asked to move a record that wasn't a child!");
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}
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// Actually move
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moveChildRecords(oldLoc, newLoc, number);
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}
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}
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/* ===============================================================
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* External Serialisation Methods
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* ===============================================================
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*/
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/**
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* Write out our header, and our children.
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* @param headerA the first byte of the header
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@ -18,6 +18,7 @@
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package org.apache.poi.hslf.record;
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import org.apache.poi.util.ArrayUtil;
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import org.apache.poi.util.LittleEndian;
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import java.io.IOException;
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@ -149,6 +150,34 @@ public class SlideListWithText extends RecordContainer
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writeOut(_header[0],_header[1],_type,_children,out);
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}
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/**
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* Shifts a SlideAtomsSet to a new position.
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* Works by shifting the child records about, then updating
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* the SlideAtomSets array
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* @param toMove The SlideAtomsSet to move
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* @param newPosition The new (0 based) position for the SlideAtomsSet
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*/
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public void repositionSlideAtomsSet(SlideAtomsSet toMove, int newPosition) {
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// Ensure it's one of ours
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int curPos = -1;
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for(int i=0; i<slideAtomsSets.length; i++) {
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if(slideAtomsSets[i] == toMove) { curPos = i; }
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}
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if(curPos == -1) {
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throw new IllegalArgumentException("The supplied SlideAtomsSet didn't belong to this SlideListWithText");
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}
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// Ensure the newPosision is valid
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if(newPosition < 0 || newPosition >= slideAtomsSets.length) {
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throw new IllegalArgumentException("The new position must be between 0, and the number of SlideAtomsSets");
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}
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// Build the new records list
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moveChildrenBefore(toMove.getSlidePersistAtom(), toMove.slideRecords.length, slideAtomsSets[newPosition].getSlidePersistAtom());
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// Build the new SlideAtomsSets list
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ArrayUtil.arrayMoveWithin(slideAtomsSets, curPos, newPosition, 1);
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}
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/**
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* Inner class to wrap up a matching set of records that hold the
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@ -45,6 +45,7 @@ import org.apache.poi.hslf.record.SlideListWithText.*;
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import org.apache.poi.hslf.record.PersistPtrHolder;
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import org.apache.poi.hslf.record.PositionDependentRecord;
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import org.apache.poi.hslf.exceptions.CorruptPowerPointFileException;
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import org.apache.poi.util.ArrayUtil;
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/**
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* This class is a friendly wrapper on top of the more scary HSLFSlideShow.
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@ -243,7 +244,8 @@ public class SlideShow
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_fonts = _documentRecord.getEnvironment().getFontCollection();
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}
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} else {
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System.err.println("No core record found with ID " + (i+1) + " based on PersistPtr lookup");
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// No record at this number
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// Odd, but not normally a problem
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}
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}
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}
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@ -461,6 +463,42 @@ public class SlideShow
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public Document getDocumentRecord() { return _documentRecord; }
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/* ===============================================================
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* Re-ordering Code
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* ===============================================================
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*/
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/**
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* Re-orders a slide, to a new position.
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* @param oldSlideNumer The old slide number (1 based)
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* @param newSlideNumber The new slide number (1 based)
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*/
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public void reorderSlide(int oldSlideNumer, int newSlideNumber) {
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// Ensure these numbers are valid
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if(oldSlideNumer < 1 || newSlideNumber < 1) {
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throw new IllegalArgumentException("Old and new slide numbers must be greater than 0");
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}
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if(oldSlideNumer > _slides.length || newSlideNumber > _slides.length) {
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throw new IllegalArgumentException("Old and new slide numbers must not exceed the number of slides (" + _slides.length + ")");
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}
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// Shift the SlideAtomsSet
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SlideListWithText slwt = _documentRecord.getSlideSlideListWithText();
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slwt.repositionSlideAtomsSet(
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slwt.getSlideAtomsSets()[(oldSlideNumer-1)],
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(newSlideNumber-1)
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);
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// Re-order the slides
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ArrayUtil.arrayMoveWithin(_slides, (oldSlideNumer-1), (newSlideNumber-1), 1);
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// Tell the appropriate slides their new numbers
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for(int i=0; i<_slides.length; i++) {
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_slides[i].setSlideNumber( (i+1) );
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}
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}
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/* ===============================================================
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* Addition Code
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* ===============================================================
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@ -0,0 +1,295 @@
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/* ====================================================================
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Copyright 2002-2004 Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hslf.usermodel;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import junit.framework.TestCase;
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import org.apache.poi.hslf.*;
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import org.apache.poi.hslf.model.*;
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/**
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* Tests that SlideShow can re-order slides properly
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*
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* @author Nick Burch (nick at torchbox dot com)
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*/
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public class TestReOrderingSlides extends TestCase {
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// A SlideShow with one slide
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private HSLFSlideShow hss_one;
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private SlideShow ss_one;
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// A SlideShow with two slides
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private HSLFSlideShow hss_two;
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private SlideShow ss_two;
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// A SlideShow with three slides
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private HSLFSlideShow hss_three;
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private SlideShow ss_three;
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/**
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* Create/open the slideshows
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*/
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public void setUp() throws Exception {
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String dirname = System.getProperty("HSLF.testdata.path");
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String filename = dirname + "/Single_Coloured_Page.ppt";
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hss_one = new HSLFSlideShow(filename);
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ss_one = new SlideShow(hss_one);
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filename = dirname + "/basic_test_ppt_file.ppt";
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hss_two = new HSLFSlideShow(filename);
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ss_two = new SlideShow(hss_two);
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filename = dirname + "/incorrect_slide_order.ppt";
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hss_three = new HSLFSlideShow(filename);
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ss_three = new SlideShow(hss_three);
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}
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/**
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* Test that we can "re-order" a slideshow with only 1 slide on it
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*/
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public void testReOrder1() throws Exception {
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// Has one slide
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assertEquals(1, ss_one.getSlides().length);
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Slide s1 = ss_one.getSlides()[0];
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// Check slide 1 is as expected
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assertEquals(256, s1._getSheetNumber());
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assertEquals(3, s1._getSheetRefId());
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assertEquals(1, s1.getSlideNumber());
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// Now move it to one
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ss_one.reorderSlide(1, 1);
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// Write out, and read back in
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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hss_one.write(baos);
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ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
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HSLFSlideShow hss_read = new HSLFSlideShow(bais);
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SlideShow ss_read = new SlideShow(hss_read);
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// Check it still has 1 slide
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assertEquals(1, ss_read.getSlides().length);
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// And check it's as expected
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s1 = ss_read.getSlides()[0];
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assertEquals(256, s1._getSheetNumber());
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assertEquals(3, s1._getSheetRefId());
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assertEquals(1, s1.getSlideNumber());
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}
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/**
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* Test doing a dummy re-order on a slideshow with
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* two slides in it
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*/
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public void testReOrder2() throws Exception {
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// Has two slides
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assertEquals(2, ss_two.getSlides().length);
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Slide s1 = ss_two.getSlides()[0];
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Slide s2 = ss_two.getSlides()[1];
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// Check slide 1 is as expected
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assertEquals(256, s1._getSheetNumber());
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assertEquals(4, s1._getSheetRefId()); // master has notes
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assertEquals(1, s1.getSlideNumber());
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// Check slide 2 is as expected
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assertEquals(257, s2._getSheetNumber());
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assertEquals(6, s2._getSheetRefId()); // master and 1 have notes
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assertEquals(2, s2.getSlideNumber());
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// Don't swap them around
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ss_two.reorderSlide(2, 2);
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// Write out, and read back in
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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hss_two.write(baos);
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ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
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HSLFSlideShow hss_read = new HSLFSlideShow(bais);
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SlideShow ss_read = new SlideShow(hss_read);
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// Check it still has 2 slides
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assertEquals(2, ss_read.getSlides().length);
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// And check it's as expected
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s1 = ss_read.getSlides()[0];
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s2 = ss_read.getSlides()[1];
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assertEquals(256, s1._getSheetNumber());
|
||||
assertEquals(4, s1._getSheetRefId());
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
assertEquals(257, s2._getSheetNumber());
|
||||
assertEquals(6, s2._getSheetRefId());
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
}
|
||||
|
||||
/**
|
||||
* Test re-ordering slides in a slideshow with 2 slides on it
|
||||
*/
|
||||
public void testReOrder2swap() throws Exception {
|
||||
// Has two slides
|
||||
assertEquals(2, ss_two.getSlides().length);
|
||||
Slide s1 = ss_two.getSlides()[0];
|
||||
Slide s2 = ss_two.getSlides()[1];
|
||||
|
||||
// Check slide 1 is as expected
|
||||
assertEquals(256, s1._getSheetNumber());
|
||||
assertEquals(4, s1._getSheetRefId()); // master has notes
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
// Check slide 2 is as expected
|
||||
assertEquals(257, s2._getSheetNumber());
|
||||
assertEquals(6, s2._getSheetRefId()); // master and 1 have notes
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
|
||||
// Swap them around
|
||||
ss_two.reorderSlide(2, 1);
|
||||
|
||||
// Write out, and read back in
|
||||
ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
||||
hss_two.write(baos);
|
||||
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
|
||||
|
||||
HSLFSlideShow hss_read = new HSLFSlideShow(bais);
|
||||
SlideShow ss_read = new SlideShow(hss_read);
|
||||
|
||||
// Check it still has 2 slides
|
||||
assertEquals(2, ss_read.getSlides().length);
|
||||
|
||||
// And check it's as expected
|
||||
s1 = ss_read.getSlides()[0];
|
||||
s2 = ss_read.getSlides()[1];
|
||||
assertEquals(257, s1._getSheetNumber());
|
||||
assertEquals(6, s1._getSheetRefId());
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
assertEquals(256, s2._getSheetNumber());
|
||||
assertEquals(4, s2._getSheetRefId());
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
}
|
||||
|
||||
/**
|
||||
* Test doing a dummy re-order on a slideshow with
|
||||
* three slides in it
|
||||
*/
|
||||
public void testReOrder3() throws Exception {
|
||||
// Has three slides
|
||||
assertEquals(3, ss_three.getSlides().length);
|
||||
Slide s1 = ss_three.getSlides()[0];
|
||||
Slide s2 = ss_three.getSlides()[1];
|
||||
Slide s3 = ss_three.getSlides()[2];
|
||||
|
||||
// Check slide 1 is as expected
|
||||
assertEquals(256, s1._getSheetNumber());
|
||||
assertEquals(3, s1._getSheetRefId()); // no notes on master
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
// Check slide 2 is as expected (was re-ordered from 3)
|
||||
assertEquals(258, s2._getSheetNumber());
|
||||
assertEquals(5, s2._getSheetRefId()); // no notes on slide
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
// Check slide 3 is as expected (was re-ordered from 2)
|
||||
assertEquals(257, s3._getSheetNumber());
|
||||
assertEquals(4, s3._getSheetRefId()); // no notes on slide
|
||||
assertEquals(3, s3.getSlideNumber());
|
||||
|
||||
// Don't swap them around
|
||||
ss_three.reorderSlide(2, 2);
|
||||
|
||||
// Write out, and read back in
|
||||
ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
||||
hss_three.write(baos);
|
||||
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
|
||||
|
||||
HSLFSlideShow hss_read = new HSLFSlideShow(bais);
|
||||
SlideShow ss_read = new SlideShow(hss_read);
|
||||
|
||||
// Check it still has 3 slides
|
||||
assertEquals(3, ss_read.getSlides().length);
|
||||
|
||||
// And check it's as expected
|
||||
s1 = ss_read.getSlides()[0];
|
||||
s2 = ss_read.getSlides()[1];
|
||||
s3 = ss_read.getSlides()[2];
|
||||
|
||||
assertEquals(256, s1._getSheetNumber());
|
||||
assertEquals(3, s1._getSheetRefId());
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
assertEquals(258, s2._getSheetNumber());
|
||||
assertEquals(5, s2._getSheetRefId());
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
assertEquals(257, s3._getSheetNumber());
|
||||
assertEquals(4, s3._getSheetRefId());
|
||||
assertEquals(3, s3.getSlideNumber());
|
||||
}
|
||||
|
||||
/**
|
||||
* Test re-ordering slides in a slideshow with 3 slides on it
|
||||
*/
|
||||
public void testReOrder3swap() throws Exception {
|
||||
// Has three slides
|
||||
assertEquals(3, ss_three.getSlides().length);
|
||||
Slide s1 = ss_three.getSlides()[0];
|
||||
Slide s2 = ss_three.getSlides()[1];
|
||||
Slide s3 = ss_three.getSlides()[2];
|
||||
|
||||
// Check slide 1 is as expected
|
||||
assertEquals(256, s1._getSheetNumber());
|
||||
assertEquals(3, s1._getSheetRefId()); // no notes on master
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
// Check slide 2 is as expected (was re-ordered from 3)
|
||||
assertEquals(258, s2._getSheetNumber());
|
||||
assertEquals(5, s2._getSheetRefId()); // no notes on slide
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
// Check slide 3 is as expected (was re-ordered from 2)
|
||||
assertEquals(257, s3._getSheetNumber());
|
||||
assertEquals(4, s3._getSheetRefId()); // no notes on slide
|
||||
assertEquals(3, s3.getSlideNumber());
|
||||
|
||||
// Put 3 in place of 1
|
||||
// (1 -> 2, 2 -> 3)
|
||||
ss_three.reorderSlide(3, 1);
|
||||
|
||||
// Write out, and read back in
|
||||
ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
||||
hss_three.write(baos);
|
||||
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
|
||||
|
||||
HSLFSlideShow hss_read = new HSLFSlideShow(bais);
|
||||
SlideShow ss_read = new SlideShow(hss_read);
|
||||
|
||||
// Check it still has 3 slides
|
||||
assertEquals(3, ss_read.getSlides().length);
|
||||
|
||||
// And check it's as expected
|
||||
s1 = ss_read.getSlides()[0];
|
||||
s2 = ss_read.getSlides()[1];
|
||||
s3 = ss_read.getSlides()[2];
|
||||
|
||||
assertEquals(257, s1._getSheetNumber());
|
||||
assertEquals(4, s1._getSheetRefId());
|
||||
assertEquals(1, s1.getSlideNumber());
|
||||
assertEquals(256, s2._getSheetNumber());
|
||||
assertEquals(3, s2._getSheetRefId());
|
||||
assertEquals(2, s2.getSlideNumber());
|
||||
assertEquals(258, s3._getSheetNumber());
|
||||
assertEquals(5, s3._getSheetRefId());
|
||||
assertEquals(3, s3.getSlideNumber());
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue