private void previousPage() {
if (currentSource.hasPreviousPage()) {
currentSource.previousPage();
// set new text
panel.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
panel.refreshCurrentMarkup();
panel.setCursor(null);
// update display
panel.updateCurrentPageDisplay(currentSource.getCurrentPage());
// scroll to current selection
ExtractedContentViewer.this.scrollToCurrentHit();
// update controls if needed
if (!currentSource.hasPreviousPage()) {
panel.enablePrevPageControl(false);
}
if (currentSource.hasNextPage()) {
panel.enableNextPageControl(true);
}
updateSearchControls();
}
}
private void updatePageControls() {
if (currentSource == null) return;
final int currentPage = currentSource.getCurrentPage();
final int totalPages = currentSource.getNumberPages();
panel.updateTotalPageslDisplay(totalPages);
panel.updateCurrentPageDisplay(currentPage);
if (totalPages == 1) {
panel.enableNextPageControl(false);
panel.enablePrevPageControl(false);
} else {
if (currentSource.hasNextPage()) {
panel.enableNextPageControl(true);
} else {
panel.enableNextPageControl(false);
}
if (currentSource.hasPreviousPage()) {
panel.enablePrevPageControl(true);
} else {
panel.enablePrevPageControl(false);
}
}
}
@Override
public void setNode(final Node selectedNode) {
// TODO why setNode() is called twice for the same node each time
// to clear the viewer
if (selectedNode == null) {
currentNode = null;
resetComponent();
return;
}
this.currentNode = selectedNode;
// sources are custom markup from the node (if available) and default
// markup is fetched from solr
List<MarkupSource> sources = new ArrayList<MarkupSource>();
// add additional registered sources for this node
sources.addAll(selectedNode.getLookup().lookupAll(MarkupSource.class));
if (solrHasContent(selectedNode)) {
Content content = selectedNode.getLookup().lookup(Content.class);
if (content == null) {
return;
}
// add to page tracking if not there yet
final long contentID = content.getId();
MarkupSource newSource =
new MarkupSource() {
private boolean inited = false;
private int numPages = 0;
private int currentPage = 0;
private boolean hasChunks = false;
@Override
public int getCurrentPage() {
return this.currentPage;
}
@Override
public boolean hasNextPage() {
return currentPage < numPages;
}
@Override
public boolean hasPreviousPage() {
return currentPage > 1;
}
@Override
public int nextPage() {
if (!hasNextPage()) {
throw new IllegalStateException("No next page.");
}
++currentPage;
return currentPage;
}
@Override
public int previousPage() {
if (!hasPreviousPage()) {
throw new IllegalStateException("No previous page.");
}
--currentPage;
return currentPage;
}
@Override
public boolean hasNextItem() {
throw new UnsupportedOperationException("Not supported, not a searchable source.");
}
@Override
public boolean hasPreviousItem() {
throw new UnsupportedOperationException("Not supported, not a searchable source.");
}
@Override
public int nextItem() {
throw new UnsupportedOperationException("Not supported, not a searchable source.");
}
@Override
public int previousItem() {
throw new UnsupportedOperationException("Not supported, not a searchable source.");
}
@Override
public int currentItem() {
throw new UnsupportedOperationException("Not supported, not a searchable source.");
}
@Override
public String getMarkup() {
try {
String content =
StringEscapeUtils.escapeHtml(
getSolrContent(selectedNode, currentPage, hasChunks));
return "<pre>" + content.trim() + "</pre>";
} catch (SolrServerException ex) {
logger.log(Level.WARNING, "Couldn't get extracted content.", ex);
return "";
}
}
@Override
public String toString() {
return "Extracted Content";
}
@Override
public boolean isSearchable() {
return false;
}
@Override
public String getAnchorPrefix() {
return "";
}
@Override
public int getNumberHits() {
return 0;
}
@Override
public LinkedHashMap<Integer, Integer> getHitsPages() {
return null;
}
@Override
public int getNumberPages() {
if (inited) {
return this.numPages;
}
final Server solrServer = KeywordSearch.getServer();
try {
numPages = solrServer.queryNumFileChunks(contentID);
if (numPages == 0) {
numPages = 1;
hasChunks = false;
} else {
hasChunks = true;
}
inited = true;
} catch (SolrServerException ex) {
logger.log(Level.WARNING, "Could not get number of chunks: ", ex);
} catch (NoOpenCoreException ex) {
logger.log(Level.WARNING, "Could not get number of chunks: ", ex);
}
return numPages;
}
};
currentSource = newSource;
sources.add(newSource);
// init pages
final int totalPages = currentSource.getNumberPages();
int currentPage = currentSource.getCurrentPage();
if (currentPage == 0 && currentSource.hasNextPage()) {
currentSource.nextPage();
}
updatePageControls();
}
// first source will be the default displayed
setPanel(sources);
// If node has been selected before, return to the previous position
scrollToCurrentHit();
}